E-202 VOL.20 CHAD EXPORT ^ OP~ROJ ECT VOLUME 2 Biophysical/Socioeconomic/ Health Technical Requirements and Specifications . * - - \ - ENVIRONMENTAL MANAGEMENT PLAN CHAD PORTION CHAD EXPORT PROJ ECT VOLUME 2 Biophysical/Socioeconomic/ Health Technical Requirements and Specificatons _ ;X3'tE i o~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ENVIRONMENTAL ASSESSMENT EXECUTIVE SUMMARY AND UPDATE | ~~Environmental llSuppoDrting l lEnvironmentall Management Plan - Documents Management Plan - Chad Portion Cameroon Portion VOLUME 1 VOLUME 1 VOLUME 1 * Base Document * Project Description * Base Document * Management Plan for Cultural Properties * Decommissioning * Induced Access Management Plan * Handbook for Site-Specific * List of Studies/Reports * Management Plan for Cultural Properties Environmental Mitigation Actions * List of Consultants/Experts * Handbook for Site-Specific Environmental * Environmental Monitoring Plan VOLUME2 Mitigation Actions VOLUME 2 * Alternatives Analysis * Environmental Monitoring Plan * Biophysical/Socioeconomic/Health VOLUME 3 VOLUME 2 Technical Requirements and * Consultation and Public Review Program * Biophysical/Socioeconomic/Health Specifications Technical Requirements and Specifications VOLUME 4 VOLUME 3 * Oil Spill Response: Preliminary VOLUME 3 * Compensation & Resettlement Plan Approach * Compensation Plan VOLUME 4 VOLUME 5 VOLUME 4 * Regional Development Plan: * Chad Biological Studies * Environmental Foundation Plan Near Term Measures * Cameroon Biological Studies * Offsite Environmental Enhancement Program * Revenue Management Plan * Indigenous Peoples Plan * Institutional Capacity Building VOLUME 6 VOLUME5 - Chad Public Health VOLUME 5 * Cameroon Public Health * Waste Management Plan * Waste Management Plan VOLUME 6 VOLUME 6 * Environmental Line List * Environmental Line List * Environmental Alignment Sheets * Environmental Alignment Sheets REFERENCE DOCUMENTS 4/29/99 This document is available in English and French. Important Note: The governing language for these documents is English. The French version is a free translation. ENVIRONMENTAL MANAGEMENT PLAN CHAD PORTION VOLUME 2 Biophysical/SocioeconomiclHealth Technical Requirements and Specifications May 1999 06-99 BIOPHYSICAUSOCIOECONOMIC/HEALTH TECHNICAL REQUIREMENTS AND SPECIFICATIONS ENVIRONMENTAL MANAGEMENT PLAN CHAD EXPORT PROJECT CHAD PORTION -VOLUME 2 Biophysical/Socioeconomic/Health Technical Requirements and Specifications This Volume of the Environmental Management Plan for the Chad Portion of the Chad Export Project contains the following biophysical/socioeconomiclhealth technical requirements and specifications: => Job Specification Coordination Procedures (JSCP): * JSCP 19 Changes in Work I Deviations from Job Specifications * JSCP 22 Project Safety Practices * JSCP 23 Occupational Health, Medical Facilities, and Sanitation * JSCP 27 Training * JSCP 29 Socioeconomic Interactions * JSCP 30 Environmental Management . JSCP 31 Interface Management = General Proiect Specifications (GPS): GPS-001 Camps and Facilities - GPS-002 Catering Services , GPS-003 Potable Water Treatment, Storage, and Distribution (Temporary) * GPS-004 Packaged Sewage Treatment System (Temporary) , GPS-005 Water Wells (Temporary) * GPS-006 Waste Incinerator (Temporary) . GPS-007 Non-Hazardous Solid Waste Landfill * GPS-008 Project Safety Requirements . GPS-010 Health Plan * GPS-011 Waste Management . GPS-012 Socioeconomic Action Plan * GPS-018 Septic Tank and Effluent Disposal into Drainage Field (Temporary) * GPS-020 Survey Camps and Facilities * GPS-021 Survey Catering Services VoI2 cover english.doc 1 MAY 1999 BIOPHYSICALISOCIOECONOMIC/HEALTH 2 TECHNICAL REQUIREMENTS AND SPECIFICATIONS ENVIRONMENTAL MANAGEMENT PLAN CHAD PORTION - VOLUME 2 CHAD EXPORT PROJECT = Cameroon/Chad Specifications (CCS): * CCS 7-1-10 Waste Incinerator * CCS 11-10-1 Water Wells . CCS 11-10-2 Potable Water Treatment, Storage, and Distribution * CCS 11-11-1 Packaged Sewage Treatment System * CCS 13-4-1 Solid Waste Landfill * CCS 21-20-107 Soil Erosion Mitigation * CCS 21-20-108 Environmental Impact Mitigation => Esso Chad Specifications (ECS): * ECS 7-4-1 Waste Incinerators . ECS 11-1-1 Water Wells . ECS 11-1-2 Potable Water Treatment, Storage, and Distribution * ECS 11-9-1 Septic Tank and Effluent Disposal into Drainage Field * ECS 13-4-1 Solid Waste Landfill * ECS 26-14 Soil Erosion Mitigation * ECS 26-1-5 Environmental Impact Mitigaton MAY 1999 2 Vol2 cover english.doc Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 19 CHANGES IN WORKIDEVIATIONS FROM JOB SPECIFICATION 1.0 Scope This section sets forth Esso's minimum requirements for processing requests for changes in the Work or deviations from the Job Specification. 2.0 Contractors Duties Contractors principal duties with respect to initiating and processing change or deviation requests and implementing Change Orders or Job Specification deviations shall include: 2.1 Preparing, maintaining and implementing a Change Management Plan which includes procedures covering all aspects of processing change/deviation requests and change/deviation proposals and implementing Change-Orders or Job Specification deviations for the Work. 2.2 Initiating a request for a revision to or deviation from the Job Specification on a timely basis. This would include requests that, if implemented, would benefit the overall execution of the Work. 2.3 Responding within seven (7) calendar days to a request from Esso for an estimate of the effect, if any, that the following will have upon the Contract Price and/or Scheduled Completion Date: 2.3.1 A proposed revision to or deviation from the Job Specification. 2.3.2 Other circumstances identified in Article 7 of the Principal Document for which a Change Order is allowable. 2.4 Implementing revisions to or deviations from the Job Specification when authorized by Esso. 3.0 Contractors Change Management Plan Contractors Plan shall be issued within thirty (30) calendar days after date of Contract. The Plan shall include procedures for initiating and processing requests for Change Orders or deviations, as well as implementing authorized Change Orders or approved deviations, shall include a detailed description of: 3.1 How change/deviation requests will be initiated. 3.2 The preparation of change/deviation proposals by Contractor, and the schedule for their completion and submission to Esso. j:\O6864000\cmpt\contract\ccpsol5o\sect-19.doc Page 1901 1i5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 19 3.3 The methodology for recording and. tracking changefdeviation requests, change/deviation proposals and Change Orders I deviation approvals. 3.4 How revisions to or deviations from the Job Specification will be implemented when authorized by Esso. 3.5 The forms that will be used in the entire process, including a sample of each. 4.0 Procedural Requirements Contractor's procedures for initiating and processing change/deviation requests and implementing Change Orders or approved deviations shall incorporate the following requirements of Esso, at a minimum: 4.1 Contractor (or Esso) may initiate a request for a revision to or deviatioh from the Job Specification. However, Contractor shall obtain Esso's approval to initiate a change/deviation request prior to expending any engineering, cost estimating, scheduling or other effort in support of it. If accepted, Esso shall issue a change/deviation request to Contractor. The change/deviation request shall include: 4.1.1 A brief description of the proposed revision/deviation to the Job Specification including the safety and environmental implications,and the required Contractor's services. 4.1.2 An identification of who initiated the changeldeviation request (e.g., Esso, Contractor) and the reason for the changeldeviation request (e.g., safety, operability, Esso preference, investment retum). Contractor shall assign a Change Order number to each change request and enter it into the Change Order log (4.6 below) at the time that it is issued. Deviation requests shall similarly be assigned a number and entered in the deviation log (4.6 below). 4.2 Contractor shall respond to a change/deviation request by submitting a completed change/deviation proposal to Esso within seven (7) calendar days of the initial request. If Contractor determines that the change/deviation proposal cannot be completed within seven days, Contractor shall promptly advise Esso of that fact, the reason for the delay and the date that the change/deviation proposal wil be available for Esso's review. The change/deviation proposal shall include: 4.2.1 The effect, if any, on the Contract Price with subtotals in the components of the Contract Price specified in Exhibit A of the Principal Document. The estimated effects shall be supported by accompanying backup data which clearly define how the subtotals were developed. j:\06864000\cmpt\contract\ccpsOl5O\sect-1 9.doc Page 1902 15-Nov-96 Esso Exploration and Production Chad Incs Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 19 4.2.2 The effect, if any, on the Scheduled Completion Date with approprate accompanying backup data. 4.2.3 A statement regarding the effect of the proposed change/deviation, if any, on Contractors guarantees. 4.2.4 The effect, if any, on process or utility requirements. 4.2.5 The cost to process a Change Order shall be separately identified for each Change Order. 4.3 Contractor shall use unit and/or all inclusive rates from the Contract in preparing the change/deviation proposal in order to: (i) minimize the time required for estimating; and (ii) to facilitate Esso's review of the proposal. Where rates do not exist, Contractor shall propose a new rate based on rates for similar activities already included in the Contract, when applicable. 4.4 If Esso authorization to proceed with the revision to or deviation from the Job Specification has not accompanied the change/deviation request, the change proposal shall include the latest date such authorization can be given without further affecting the Scheduled Completion Date. 4.5 Esso will issue the Change Order or deviation if it agrees to implement the requested change/deviation. 4.6 Contractor shall maintain separate Change Order and deviation logs of approved and pending changes/deviations that shall include: the Change Order or deviation number, a brief description of the change/deviation, the date that the change/deviation request was received by Contractor, the date that the change! deviation proposal was submitted to Esso, the date that it was approved or rejected, the action taken by Esso (approval or rejection), the effect upon the Contract Price and Scheduled Completion Date, and any remarks. The logs should be maintained in a comprehensive database for easy sorting and retrieval. Contractor shall keep the logs current and include a summary of them in its monthly progress report as defined in the Change Management Plan agreed with Esso. 4.7 Esso's authorization for Contractor to perform Work associated with a change/deviation- will normally accompany the approved deviation or Change Order. However, Esso may authorize Contractor to perform part or all of the Work associated with the change/deviation at the time that it issues the change/deviation request. j:\06864000\cmpt\contract\ccpsol5o\sect-19.doc Page 1903 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 22 PROJECT SAFETY PRACTICES 1.0 Scope This section sets forth Esso's minimum safety requirements of Contractor during the execution of the Work. 2.0 General 2.1 This procedure in conjunction with the Project Safety Requirements, GPS-008, have been prepared to assist each project Work Site employer/Contractor in satisfying its moral, contractual, and legal accident prevention responsibilities, in such a manner that a safe, efficient operation is assured. For additional advice and assistance each employer should consult with its safety organization, insurance carnier or similar available source. 2.2 Esso at all levels is dedicated to assuring that its employees and others are provided a safe and healthy place to work on each of its projects. 2.3 The safety goals and objectves that Esso has established for the project are as follows: - Incur zero fatalities, zero lost time injuries and zero recordable accidents/incidents for all Work Sites and the promotion of off-the-job safety; * Incur no long term debilitating occupational related illnesses and minimize short term illnesses associated with work activities and job site locations through a proactive medical and health program; - Limit personnel injuries and other losses due to emergencies through an Emergency Preparedness and Response Plan; - Prevent recurring accidents/incidents through a program of a Root Cause Analysis and lessons leamed. 2.4 Contractor shall develop and maintain a safe working environment and institute a safety program aimed at eliminating accidents, injuries and property damage at the Work Site. 2.5 The safety, medical rules and regulations contained herein are not all inclusive. OSHA, EPA, ANSI, MSHA and ACGIH standards not specifically referenced in these rules and regulations shall apply as minimum safety and health requirements as applicable to Chad and Cameroon. The use of alternative standards, which meet or exceed these minimum requirements, shall be submitted to Esso for review and approval. 2.6 This material must not be considered to be all inclusive as to the hazards that might be encountered, safety practices that should be performed, or safe conditions that should be maintained during the course of this project. 06864000\cpmt\contractXccps01 50sect-22.doc Page 2201 15-Nov-96 Esso Exptoration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 22 2.7 All line managers, supervisors and foremen of Contractor and its Subcontractors share in Contractor's responsibility for the safety of their personnel at the Work Site and shall make safety the highest priority of their day-to-day work assignments. 3.0 Im?ortance of Safety 3.1 The first consideration for all Contractors and their Subcontractors is the safety and health of their employees through all phases contracted. It is Contractor's responsibility to ensure that all of its employees are fully aware of the safety requirements on the site and to conform to same. 3.2 Esso cannot and will not relieve or accept liability for any Contractor or Subcontractor in regard to safety responsibility to its employees. Each Contractor must enforce and each of its employees must comply with the safety regulations and standards established on this project. 4.0 Contractors Organization 4.1 Contractor shall assign a qualified, full-time safety advisor to coordinate all of the safety activities of Contractor and its Subcontractors at the Work Site. The safety advisor shall report directly to Contractor's Project Manager and not to anyone else with direct responsibility for construction. The safety advisor shall be present at the Work Site on a full-time basis from the time that Contractor begins construction operations until Contractor leaves the Work Site. Contractor's safety advisor shall provide leadership for Contractor's safety program and advise Contractor's line management at the Work Site, who remains responsible for the safety of their personnel on the proiect. 4.2 Contractor shall designate a safety representative who will coordinate with Esso's safety advisor or Regional Safety Office. Contractor safety representatives will attend all meetings pertinent to safety, medical, security or fire information presented by Esso. 4.3 Contractor safety representatives shall also conduct a safety orientation with all Subcontractors to ensure that the safety requirements are fully understood and complied with. 4.4 Contractor shall submit to Esso a detailed description of its safety organization for the project, the identity of the assigned safety advisor and assistant safety advisors, and a detailed description of their assigned duties including safety advisor's qualifications. This information should be submitted along with the Contractor's overall project construction organization required by 2.2 of Section 1. 06864000\cpmt\contract\ccpsO1 50\sect-22.doc Page 2202 1 5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 22 5.0 Contractor's Duties Contractor's principal duties with respect to Safety shall include: 5.1 Instructing each employee on the Work Site in the recognition and avoidance of unsafe acts and/or conditions applicable to the work environment to control or eliminate injury and/or illness. Contractor shall enforce the project and statutory safety rules with its employees- 5.2 Providing and requiring the use of appropriate personal protective equipment in all operations where there is an exposure to potentially hazardous conditions or materials. All records shall be maintained at a location accessible to Esso. 5.3 Notifying Esso of any hazardous chemicals or substances that are brought to the Work Site. Contractor shall provide Esso with a copy of Contractor's Hazardous Communication Program and the Material Safety Data Sheet(s) (MSDS) for the chemical(s) or substance(s) intended for use on the site. A bookcase, centrally located, should be dedicated for this information. Contractor is responsible for maintaining a copy of Contractors Hazardous Communication Program and Material Safety Data Sheet(s) on site for Contractor's own reference and employee training. The legal storage, use and disposal of wastes of any hazardous chemicals or substances is the responsibility of Contractor in accordance with Contractor's Waste Management Plan. 5.4 Developing, publishing and enforcing appropriate work standards and safety rules for the Work Site, including a Alcohol and Drug Use Policy pursuant to GPS-008, Appendix II and in accordance with the Alcohol and Drug Use Policy stated in Article 13, Principal Document. 5.5 Developing a program for the safe use and storage of explosives. This program must meet the minimum requirements outlined in OSHA 1926.900 and 1926.914. 5.6 Developing a fire protection and prevention program conforming to Section 24, Coordination Procedure. Contractor shall also comply with all fire and safety rules and regulations established on the project. 5.7 Preparing, maintaining and implementing a safety execution plan for the Work Site. 5.8 Preparing, maintaining a detailed, site specific safety manual for the project. 5.9 Developing and conducting a safety indoctrination and training program to instruct the work force in maintaining safe working conditions, in following safe construction practices and in improving their safety awareness. 5.10 Conducting accident and incident investigations and analyses; issuing reports of the investigations and analyses to appropriate parties. 06864000\cpmt\contract\ccpsO150\sect-22.doc Page 2203 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 22 5.11 Utilizing OSHA standards as the minimum safety requirements for the project. Any Work Site safety regulations which exceed the minimum standards established shall be incorporated into Contractor's safety program. 5.12 Before starting work at the Work Site, attending a pre-construction meeting with Esso to understand the project conditions and safety requirements. A Work Site tour shall be made to confirm Contractor's awareness of potential safety hazards. Appropriate methods, equipment, devices and material shall be provided by Contractor to assure a safe work place. Contractor shall provide or develop its own project specific safety program and submit it to Esso for review prior to starting work at the Work Site as per 6.1 of this Section. Such review shall not relieve Contractor of its responsibility for safety, nor shall such reviews be construed as limiting in any manner. It is Contractor's obligation to undertake any action which may be necessary or required to establish and maintain safe working conditions at the Work Site. 6.0 Contractor's Safety Execution Plan 6.1 Contractor shall submit its safety execution plan to Esso for its review and approval within six (6) months after date of Contract, but not later then four (4) months prior to field mobilization. 6.2 As the project progresses, Contractor shall constantly evaluate the effectiveness of its safety execution plan and propose to Esso appropriate modifications to-it. 6.3 The safety execution plan shall address at the minimum the topics shown in the following typical Table of Contents for such a plan and shall discuss the actions and processes that will be used to achieve the safety standards including identification of responsible parties. The plan's elements shall also address the following: 6.3.1 Discussion of the approval process and milestones for deliverables as applicable, 6.3.2 A mechanism for monitoring and enforcing compliance with the plan, including responsibilities of Contractor auditors, interaction with Esso, implementation of remedial actions to resolve deficiencies, and documentation of management approval of remedial actions, 6.3.3 A process for resolving conflicts between the objectives of safety and construction personnel, 6.3.4 Reports on safety performance that will be provided to Esso, 6.3.5 Procedures for managing change of personnel/organizations responsible for a task, 0686400O0cpmt\contract\ccpsOl 50'sect-22.doc Page 2204 1-5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 22 6.3.6 Provisions for incorporating improvements to the safety program. 06864000\cpmt\contractXccpsO1 50%sect-22.doc Page 2205 1 5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 22 CONSTRUCTION SAFETY EXECUTION PLAN TYPICAL TABLE OF CONTENT Introduction Purpose of Plan * Objectives * Esso's Safety Philosophy and Policy E Contractor's Role Safety Considerations in Subcontracting Safety Screening * Invitations to Bid - Bid Review Construction Safety Planninq General Requirements * Site Safety Manual Training and Indoctrination Ordering Safety Materials * Heavy Lifts * Construction Tools and Equipment * Layout of Temporary Construction Facilities * Work Permits * Air Transportation Safety for On Site Aircraft, ie; Approaching Running Aircraft, Loading & Unloading * Driver Education and Training; Safe Driving Enforcement * Safe Handling and Storage of Explosives * Industrial Hygiene Construction Site Activities Responsibilities * Safety Indoctrination * Alcohol and Drug Use Program and Responsibilities * Publicity * Safety Incentive ProgramslMotivation * Job Safety Analysis * Safety and Health Meetings * Management Meetings * Workers' Meetings * Site Safety Inspections and Audits 06864000\cpmt\contract\ccpsO1 50'sect-22.doc Page 2206 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Conttact CCPS-15 Job Specification Revision No. 0 Coordination Procedure - Section 22 * Personal Protection Equipment * Accident Investigation, including Root Cause Analysis * Safety Reporting/Record Keeping * Process Safety Management of Highly Hazardous Chemicals * Work Site Hazard Communication Program (HAZCOM) * Multi-Lingual Training, Signs and Manuals. Industrial Hygiene * Hazard Communication (Right To Know) * Employee Exposure and Medical Records * Applicant Medical History * Medical Examinations * Respirators * Respirator Wearer Medical Qualification * Breathing Air Quality N Noise * Asbestos Handling Procedures * Heat Stress * Pre-Employment History and Partial Physical * Radiation Control * Alcohol and Drug Use Policy Process Safety Management * Lead Exposure 7.0 Procedural Requirements 7.1 Any work standards, safety rules, or safety procedures and reporting forms which Contractor develops for the project shall incorporate appropriate provisions of, and be consistent with, applicable Esso safety regulations and documents. 7.2 Contractor's site specific safety manual shall include the work standards, safety rules and the detailed safety procedures for the Work Site. Contractor shall submit the completed manual to Esso for its review and agreement six (6) months after date of Contract but not later than four (4) months prior to field mobilization and prior to distributing it to supervisors and workers at the Work Site. The safety manual should be written in the local language, and/or other language(s) designated by Esso. 7.3 The safety manual shall be distributed to all Contractor and Subcontractor supervisors upon arrival at the Work Site. An abridged version of the safety manual (the contents of which is to be agreed by Esso prior to publication) may be developed by the Contractor and distributed to other workers at the Work Site. Otherwise, individual workers shall be issued the same safety manual that the supervisors receive. 06864000\cpmt\contractXccpsOI50osect-22.doc Page 2207 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordinafion Procedure - Secton 22 7.4 Contractor's site specific safety manual shall address the following topics as a minimum: * Esso's safety philosophy and policy * Contractor's safety policy * Contractor's safety organization * General safety rules; general behavior required of workers at the Work Site * Safety orientation, safety training and safety motivation programs * Site medical facilities, provisions for medivac ambulances, doctors, hospitals, etc., for handling emergencies beyond site treatment capability Fire protection e Security procedures Traffic regulations Use of personal protective equipment and clothing Fall protection * Industrial hygiene * Cranes and lifting equipment; conduct of critical and heavy lifts (defined as those lifts in excess of 50 tons, those which exceed 75% of the capacity of lifting equipment being utilized, those requiring two or more pieces of equipment operating in unison, those conducted over process piping, electrical instrument- cable trays, live or sensitive operating equipment, and those lifts requiring special lifting gear such as helicopters or ginpoles.) * Minimizing the number of personnel working in any one area, or above one another, at the same time. * Use of man baskets and boatswains chairs * Excavations * Working near or around water * Rules for dealing with specific potential hazards including operation of potentially hazardous tools, machinery and equipment, such as: electrical tools, construction vehicles and motorized equipment, welders and grinders 06864000\cpmt\contractccps01 50Nsect-22.doc Page 2208 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 22 * Hot and cold work permit procedures * Entry into confined spaces * Lockout and tagout of electrical and mechanical equipment * General blanking procedures; blanking of piping and other safeguards during construction near operating units, testing and commissioning * Housekeeping, to include marking and isolating potential hazards * Safety inspections of construction equipment and vehicles * Emergency procedures and site evacuation plan, including emergency signals and responses thereto D Ionization radiation * Welding and burning * Emergency response to hazardous release * Hot tap procedures X Minimum requirements for provision of temporary power * LocationAayout of temporary buildings X Demolition/removal of equipment and facilities 8.0 Instruction and Traininq Contractor's safety indoctrination and training program shall be in languages understood by the workers and shall incorporate the following elements. 8.1 A safety indoctrination session for each visitor and worker of Contractor, Esso and Subcontractors, prior to the time the person begins work or visits at the Work Site. The indoctrination will: (i) Acquaint the employee or visitor with Esso's prioritized project objectives. (ii) Acquaint the employee or visitor with the Work Site, the nature of the Work, the hazards that the employee or visitor may encounter, and the work standards and safety rules that must be followed to eliminate accidents, injuries and incidents on the Work Site. 06864000xcpmtXcontract\ccps01 50\sect-22.doc Page 2209 15-Nov-96 Esso Explorafton and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 22 (iii) Distribute the appropriate safety manual for the Work Site and review its contents, stressing those sections applicable to the employee and his/her job. (iv) Advise the employee of the requirements for working safely, and that failure to follow safety rules may resuft in disciplinary action, including dismissal- 8.2 Appropriate safety instructions for each worker of Contractor and its Subcontractors from his/her supervisor with every work assignment. 8.3 Development of a safe working plan for each new work assignment which shall be analyzed for potential hazards using the Job Safety Analysis procedure as outlined in the Project Safety Requirements, GPS-008. This Analysis shall be used as the basis for providing safety instructions. 8.4 Contractor shall assess the effectiveness of the training and record methods used to make the assessment. 8.5 A record shall be kept of all personnel who undertake safety indoctrination and training. 8.6 Instruction and training of employees will be required on this project. Examples of such required training to be provided by Contractor are: * Indoctrination - Newly employed, promoted and/or transferred personnel shall be verbally instructed in the safety practices required by their work assignments. * Work Assignments - All work assignments must include specific attention to safety. Follow-up monitoring is required in order to prevent accidents. * Meetings - Properly conducted and recorded weekly craft "tool box" safety meetings are required. * Specific Instructions -Employees performing specific tasks or operating specific equipment shall be properly trained. v Job site visitors shall receive indoctrination for specific hazards that may be encountered at each Work Site. 9.0 Record KeeDinQ A log of safety activities, accident investigations, employee instruction, training, "tool box" meetings, etc., shall be maintained on Work Site and copies shall be prormptly provided to Esso upon request. 06864000\cpmt\contract\ccpsO1 50\sect-22.doc Page 2210 1 5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No 0 Coordination Procedure - Section 22 10.0 Fire Prevention Contractor shall be responsible for fire protection in its work and operational areas, including offices, tool rooms, and storage areas twenty-four (24) hours per day, seven days per week through the duration of the Contract. Approved fire fighting equipment in adequate quantities must be provided by Contractor, and its employees must be trained in the usage of such equipment per Section 24 of the Coordination Procedure. 11.0 Third Party Safety Inspections In addition to visits and safety inspections by its own corporate and/or insurance representatives, Contractor is advised that the Project may be inspected from time to time by authorized third parties. Among others so authorized are representatives of Esso, insurance companies and enforcement authority. Upon their proper identification, they are entitled to access and courteous consideration. Esso shall be made aware, if possible upon their arrival, but in any case as soon as possible for the purpose and results of such visits which relate to safety. 12.0 Emergency Preparedness and Response Contractor wilt provide to Esso for review and approval ninety (90) calendar days prior to field mobilization, an Emergency Preparedness, Response and Contingency Management Plan per Section 6 of GPS-009 and Section 25 of Coordination Procedure for evacuation of the work area in the event of a natural disaster and/or project emergency. Contractor will be responsible for advising its employees of the emergency signals and primary evacuation route. 06864000\cpmtXcontract\ccpsOl50sect-22.doc Page 2211 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPSO015 Job Specification Revision No. 0 Coordination Procedure - Section 23 OCCUPATIONAL HEALTH, MEDICAL FACILITIES AND SANITATION 1.0 Scope This section sets forth Esso's minimum requirements of Contractor for implementing a health program including Contractor's camps, food services and other temporary facilities, as well as for providing the required medical and sanitation facilities and services. 2.0 General Contractor's occupational health and medical program shall be in compliance with all applicable regulations and be consistent with Esso's Health Plan and Medical Service Guidelines for Remote Sites, GPS-01 0, included in this Job Specification. In addition, Contractor shall comply with Specifications for Camps and Facilities, GPS-001; Catering Services, GPS-002; Water Wells, GPS-005; Potable Water Treatment, Storage and Distribution, GPS-003; and Packaged Sewage Treatment System, GPS-004. Plans and procedures relating to this section of the Coordination Procedure document are to be submitted to Esso for approval within six (6) months after date of Contract or three (3) months prior to in-country mobilization whichever is sooner. 3.0 Contractor's Organization 3.1 Contractor shall retain, for each Work Site, a health/medical supervisor who shall be responsible for implementing Contractor's health program. 3.2 Contractor shall engage a consulting physician, trained in the United States, Canada or Western Europe with special training and experience in vector-bome and infectious medicine, to provide advice on medical supplies and equipment to be maintained, selection of medical attendants, appropriate procedures for the evacuation and care of employees requiring hospitalization or specialized treatment, and to advise on field sanitation. 3.3 Contractor shall identify its safety, health, and environment manager, health/medical supervisor and consulting physician and provide a detailed description of their qualifications (resumes and affiliations) and assigned duties to Esso with Contractor's overall project Work organization required by Paragraph 2.2 of Section 1 of this Coordination Procedure. 4.0 Contractor's Duties Contractor's principal duties on the project with respect to health, sanitation and medical facilities and services shall include: 06864000\cpmt\contract\ccpsO150\sect-23.doc Page 2301 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 23 4.1 Developing, publishing and enforcing project health and sanitation standards for the Work Site and camp area that meet or exceed those described in Esso's 'Health Plan" and 'Medical Services Guidelines for Remote Sites". 4.2 Preparing, implementing and maintaining a plan for providing the required health, sanitation and medical facilities and services for the work force (including Esso representatives associated with Contractor's operations). 4.3 Complying with Esso guidelines (reference Section 22 of this Coordination Procedure) and relevant Govemment regulations regarding safe handling of toxic materials and hazardous chemicals and other work practices. Although local or regional regulations may take precedence, project health and safety standards shall be applied as a minimum. 4.4 Providing, with Esso's prior review, qualified medical attendants, space,-equipment and supplies to provide first aid, medical treatment and triage for industrial injuries, illness or exposure to chemicals or other toxic substances that may occur. 4.5 Providing adequate health education for the project work force (including Esso representatives associated with Contractor's operations). 4.6 Providing employees with prophylaxis and inoculations against specific diseases, as appropriate. 4.7 Providing emergency medical evacuation, as appropriate, for Contractor, Subcontractor, Vendor personnel. Esso will provide emergency medical evacuation for Esso representatives. 4.8 Consulting with Esso on health regulations and inspections required by govemmental authorities. 4.9 Detecting, reporting to the onsite Esso representative and removing un-healthful or environmentally unsound conditions or hazards under Contractor's control. 4.10 Maintaining appropriate health, medical and sanitation records; preparing and issuing required health, medical and sanitation reports as requested by Esso. 4.11 Ensuring that food services workers are medically certified for food handling and preparation. Minimum standards for the organization of food services and certification requiremrents for food handlers are available in the Catering Services Specification, GPS-002. 4.12 Evaluating those persons with detected contagious diseases and taking necessary actions so that epidemics are not triggered in the rest of the work force. These persons may be returned to work only after receiving proper medical clearance. In the event of any outbreak of illness of an epidemic nature, Contractor shall comply 06864000\cpmt\contract\ccpsOl5O\sect-23.doc Page 2302 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Instatlation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 23 with and carry out such requirements as may be made by the Government, the local medical or sanitary authorities, and Esso for the purpose of dealing with and overcoming the same. 4.13 Providing clean, disease free camp facilities for Esso and Contractor employees. Minimum standards for camp operation are presented in Camps and Facilities Specification, GPS-001. 4.14 Developing disease prevention and surveillance programs for utilization at the project site. The prevention programs shall include regularly scheduled treatments to prevent the breeding of insects and vermin, particularly those associated with vector-borne diseases. Maintaining records of such treatment. This program should be developed by Contractor's consulting physician described in Paragraph 3.2. 4.15 Providing sufficient potable water for all site personnel (including Contractor and Esso employees and authorized visitors). Testing water for organic and inorganic pollutants initially and at the completion of its operations at a given site, (at a minimum) and testing for micro-biological pollutants at least weekly. Recording results. Testing for pollutants shall be carried out using methods in Standard Methods for the Examination of Water and Wastewater (Mary Ann H. Franson, editor, American Public Health Association, 1995). Minimum standards for potable water are discussed in the Potable Water Supply and Distribution Specification, GPS-003. 4.16 Disposing of all wastes, induding domestic waste water, in conformance with Esso's Waste Management Requirements, GPS-01 1 included in this Job Specification. 4.17 Cooperating with and assisting Esso medical representatives conducting inspections and audits of Contractor's occupational health, medical and sanitation performance, monitoring, and reporting. Implementing corrective and preventive actions recommended by Esso as necessary to ensure Contractor fulfills the scope and intent of the Contract. 5.0 Contractor's Occupational Health, Medical Facilities, and Sanitation Plans 5.1 Contractor shall submit its health, medical facilities, and sanitation plans to Esso for approval within six (6) months after date of Contract or three (3) months prior to in- country mobilization whichever is sooner. The plans shall be revised and re- submitted, as necessary, in order to receive Esso approval prior to in-country mobilization. 5.2 As a minimum, the plans shall describe how Contractor proposes to discharge the duties set forth in Paragraph 4.0 above, and shall also include the following topics: 06864000\cpmt\contract\ccpsOl5O\sect-23.doc Page 2303 1 5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 23 5.2.1 Actions and processes that will be used to achieve project healthimedical objectives. 5.2.2 Organization charts and resumes of personnel that will organize and manage the health/medical program. 5.2.3 Scheduled dates for deliverables. 5.2.4 Mechanism for monitoring and enforcing health/medical responsibilities of Contractor and proposed methods for interacting with the Esso medical staff. 5.2.5 Process for resolving conflicts between medical and construction personnel, goals, schedules, deliverables, or procedures. 5.2.6 Procedure for incorporating change to the health/medical plan. 5.2.7 Layout of temporary facilities including construction camps, washrooms, toilets and similar facilities, and catering services to conform to accepted health and sanitation principles and in accordance with applicable governmental regulations and relevant project specifications. 5.2.8 Medical attendants, facilities, equipment and supplies that Contractor proposes to provide to comply with the Contract. 5.2.9 Method of treatment and/or evacuation of workers who have experienced an injury or illness, or have been exposed to harmful chemicals or other toxic substances. 5.2.10 Health education training program for Contractor's workers. At least ten (10) percent of Contractors work force shall be trained in first response level first aid. Each work area should have, at a minimum, one first aid trained worker. 5.2.11 Health, sanitation and medical records that will be maintained and the frequency, format and content of such reports that will be submitted on the project to comply with the Contract. 6.0 Procedural Requirements Contractor's occupational health, medical facilities and sanitation programs shall incorporate the following requirements, at a minimum: 6.1 Contractor shall provide transportation of personnel who are taken ill or injured to an approved hospital or other suitable medical facility for further treatment when required. 06864000\cpmt\contractXccpsOt5O\sect-23.doc Page 2304 1 5Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 23 6.2 Contractor shall conduct regular inspections of its facilities to ensure that they are being maintained in a healthy, clean and sanitary condition. Contractor shall immediately investigate all potentially serious illnesses and injuries that occur to determine if their cause is work related, and to prevent them from recurring or spreading. 6.3 Contractor shall conduct monthly formal training programs for the work force to inform them of the health and environmental hazards and of Contractor's health program. 6.4 Contractor shall prepare documentation as described below, keep these records for three (3) years after Acceptance, and make all documentation available for review at the request of Esso. 6.4.1 Medical attendants shall record all cases seen or treated by them. Records shall include the identification of the worker, date and nature of the injury or illness, treatment provided, further care recommended and any work restrictions caused by the injury, illness andlor treatment. 6.4.2 Contractor shall maintain routine health and sanitation records, such as the results of pre-employment physical examinations, individual employee record of injury or illness, results of medical examinations of food handlers, results of Work Site sanitation inspections, measures taken to control vermin or pests and trend analyses of injuries and illness based on standard WHO Panel of Experts on Environmental Management for Vector Control (PEEM). 6.4.3 Contractor shall immediately notify Esso of a fatality, an injury or illness that requires hospitalization, or a possible lost time injury, as per Section 25 of Project Safety Requirements, GPS-008. 6.4.4 Contractor shall maintain weekly and monthly logs of all occupational injuries and illnesses, including first aid cases, and submit them to Esso for review by the tenth of the following month. 6.5 Contractor shall develop and implement a Work Site Hazard Communication Program (HAZCOM) as per Section 22 of this Coordination Procedure. It shall address exposure to and handling of potentially toxic and hazardous materials. It shall also include provisions for container labeling, collection and availability of Material Safety Data Sheets, and appropriate training programs to ensure that all employees are informed of Work Site hazards. Provisions for maintaining up-to- date Material Safety Data Sheets (MSDS) for chemicals brought on site during the Work shall also be included. 06864000\cpmt\contract\ccpsO150'sect-23.doc Page 2305 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 23 6.6 Contractor shall develop industrial hygiene procedures for work that entails health hazards, as per Section 22 of this Coordination Procedure. 06864000\cpmt\contract\ccpsOl50\sect-23.doc P2ge 2306 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline tnstallation Chad Development Project Contract CCPS-016 Job Specification Revision No 0 Coordination Procedure - Section 27 TRAINING 1.0 Scope This section sets forth the minimum component of the development of a competent national/local work force. This development effort is to include the craftsmen, foreman, supervisors, and support personnel. It shall be the responsibility of Contractor to develop and administer a Training Program to meet the training requirements of the Work force. Some of these requirements are described in this Section. 2.0 Definition For the definition of a National and a Local, see Section 29 - Socioeconomic Interactions. 3.0 Contractor's Training Plan Contractor shall submit to Esso for review and approval within ninety (90) calendar days after date of Contract, a Training Plan which includes: 3.1 An organization chart and associated mobilization schedule for Esso's review and approval of personnel assigned to the training efforts. The minimum standard shall be one (1) trainer and one (1) trainer aide per one hundred (400) trainees, The Training Program is to be staffed with one (1) manager, one (1) curriculum coordinator, one (1) secretary and one (1) placement coordinator per 500 trainees and one (1) recruiter. 3.2 Recruiting and placement plans for national/local hires. Contractor shall document their recruitment efforts in their hiring practices and training program and have this documentation available for review by Esso. 3.3 A comprehensive description of all planned training including environmental, safety, craft, fire protection, health, the associated training schedule and refresher training. Descriptions shall include course content, course attendees, testing, assessment and verification methods. 3.4 A description of the training tracking program and the records system which documents all employee orientation and construction training assuring compliance with the minimum training requirements and localL regional, and host country laws and regulations. 3.5 Cultural Orientation Contractor shall ensure that training orientation is both consistent with Esso standards and incorporates cultural norms of national/iocal hires. Safety, health j:\O6864000\cpmt\contract\ccpsO1 50\sect-27.doc Page 2701 15-Nov-96 Esso Exptoration and Production Chad Inc. Onshore Pipeline installation Chad Development Project Contract CCPS-016 Job Specification Revision No. 0 Coordination Procedure - Section 27 and environment is more a result of worker values than mastering facts. The Contractor must ensure workers have leaming material that has the potential of changing values associated with performance. 4.0 Contractor's Duties 4.1 Contractor shall mobilize the Training Program thirty (30) days prior to start of Construction. 4.2 Contractor shall develop and implement a Training Program which provides for a minimum of ten (10) hours of Safety, Security, Cross Cultural/Community Awareness and Environmental training for each employee during employment orientation. The program shall also implement continuing Safety, Security, Cross Cultural/Community Awareness and Environmental training for the duration of the Contract. The health and safety orientation training applies to all Project employees and visitors at the Work Site including Contractor, Subcontractor, Vendor and Esso personnel. 4.3 Contractor shall devote forty (40) hours to basic craft skills and work process orientation training for unskilled labors and/or craftsmen. At the conclusion of the forty (40) hours of training, Contractor shall evaluate the labors'lcraftsmen's progress and assign those who are qualified to on-the-job training (OJT). Those who do not qualify are to be assigned to a maximum of 120 hours of skills development. 4.4 Contractor shall implement a minimum of twenty (20) hours of high skills orientation in the Training Program for skilled and semi-skilled nationaVlocal hire which includes craft training and certification for helpers, craftsmen and foremen. 4.5 Contractor shall pay the national/local hires prevailing wage during their participation of the approved Training Program. 4.6 Contractor shall demonstrate on-the-job-training (OJT) which results in advancement and promotion of national/local hire craftworkers. 4.7 Contractor shall maintain a file on each national/local hire which will include performance evaluations, evaluation schedule, certification, and promotion record. This information is to be made available to Esso to be used in the identification of potential operations and maintenance personnel and to provide periodic feedback to employee on his performance in the areas of skills, safety, health and environment. 4.8 Contractor shall maintain a file of Training Program compliance with local, regional and country labor laws and regulations. Record of compliance shall be made available to Esso upon request. j:\06864000\cpmt\contract\ccpsOI 50sect-27.doc Page 2702 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installabton Chad Development Project Contract CCPS-016 Job Specification Revision No. 0 Coordination Procedure - Section 27 4.9 Contractor shall conduct a survey of labor availability prior to construction startup within the regional area of their work responsibility to determine the availability of skilled/unskilled labor and make available to Esso the results/conclusions of this survey. Contractor shall maintain a file demonstrating compliance in conducting a labor survey. 4.10 Contractor shall develop a craft work force profile for each regional area of their work responsibility. This information is to be used in the development of the Training Plan. 4.11 Contractor shall provide training facility(s) which is to be equipped with the standard tools and materials needed to provide training in those crafts germane to its Contract. Each training facility shall have a minimum of 30 square meters of classroom space for a maximum of 20 trainees per classroom session. Each facility shall be equipped with a minimum class "C" fumiture and typically include a video recorder (VCR), television, overhead projector and white board (1.5m by 4.5m). Class "C" fumiture is described as folding chairs or bucket seats, folding tables or nonfolding tables and metal instructors desk and chair. 4.12 Contractor shall supply each trainee, including helper, craftsman, and foreman, an industry standard basic tool kit of the craft in which the trainee is receiving training. 4.13 Contractor shall supply each worker/trainee a full set of work clothes including safety shoes, socks, trousers, and shirt to be wom while working on a Project Work Site. Contractor has the option of issuing clothing or using change rooms; regardless, Esso requires the allocation of only one (1) pair of safety shoes, three (3) pairs of socks, two (2) trousers and three (3) shirts annually per worker. The clothing to be supplied shall be approved by Esso. 4.13 In addition to the requirements of this section, Contractor shall incorporate the specific training requirements specified in the following Sections of the Coordination Procedure and the referenced General Project Specifications: Safety Training Section 22 (GPS-008) Health Education Training Section 23 (GPS-010) Fire Prevention Training Section 24 Security Force Training Section 25 (GPS-009) Environmental Training Section 30 5.0 Other Training 5.1 Contractor, in cooperation with Esso, shall identify national/local hires to receive additional training for maintenance and operations. In an effort to develop the j:\06864000\cpmt\contract\ccpsOI 50\sect-27.doc Page 2703 15-Nov-96 Esso Exploration and Production Chad Inc- Onshore Pipeline Installation Chad Development Project Contract CCPS-016 Job Specification Revision No. 0 Coordination Procedure - Section 27 necessary cadre of local talent to maintain and operate the pipeline after construction, Contractor or Esso may identify certain nationalAlocal workers who have demonstrated the ability and initiative to receive additional training as directed by Esso. 5.2 Contractor shall agree to release to Esso any national/ocal hire employee identified, and accepted by Esso, for additional training. The additional training will be provided by Esso. No addifional compensation will be made to replace the released employee. j:\06864000\cpmt\contract\cc-psOl 5Osect-27.doc Page 2704 1 5-Nov-96 FIOULR6 i TRAINING PLAN FOR CHAD DEVELOPMENT PROJECT ORIEWNATION TRAINING SKILLS DEVELOPENT mr*avea Staff 40 WrhouJrs Waraoqjae . oi~ ae _ T20 l~~~~~~~~~~~~~~~~~~~~~~~~ _ ea r,ri.nh- l Pafeiae l e r.ef*A dong P --1 .f oWrte 40 Ho SelA Craft Sa mll C re-e .iaa enl Cae wafri Iicmt |e Waorkato l l TpWeol k MttateIsArAie Wo2 k hours 21Hat"r tuSh olaila or$narKtion A safety Pefmonnel craw mnl Tim. Keeping Safety jmaction of Operation Operations at lFeranca by ESSO in______ LrT nll]bS| iof Tr&SAirdiug by Training by Mato HURSMA. AA!~ Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 29 SOCIOECONOMIC INTERACTIONS 1.0 Scope This section sets forth Esso's minimum requirements of Contractor for interactions with the populations in Chad and Cameroon, including Contractor's engagement and payment of staff and labor, provisions for care of staff and labor, and procurement of goods and services from local vendors/ businesses. 2.0 Definitions For purposes of this Section 29, the following definitions will apply: Expatriate Citizen of a country other than the country in which the Work is-being performed. Local Permanent resident cf the project area (less than one hour commute to the Work Site) National Person who is a citizen or permanent resident of the country in which the Work is being performed. 3.0 General 3.1 Contractor's socioeconomic policies shall be consistent with Esso's Socioeconomic Action Plan, GPS-012, included in this Job Specification. 3.2 Contractor shall make every reasonable effort to consult with responsible authorities to avoid or mitigate potential conflicts over cultural or religious issues. 3.3 Contractor shall prepare and present to Esso, for review and approval, a Socioeconomic Action Plan. This Plan, further described in Paragraph 7.0, shall be based on Contractor's draft Socioeconomic Action Plan submitted with its bid and shall be updated within six (6) months after the date of Contract or three (3) months prior to in-country mobilization, whichever is sooner. 3.4 After initial submittal, all plans relating to this section of this Coordination Procedure shall be revised and resubmitted, as necessary, in order to obtain Esso approval prior to in-country mobilization. 4.0 Contractor's Orgqanization and Assignments 4.1 Contractor shall identify its Socioeconomic Supervisor and provide a detailed description of assigned duties (coordinating all socioeconomic interactions) to Esso with Contractors overall organization required by Paragraph 2.2 of Section 1 of this Coordination Procedure. 068640001cpmt\contract\ccps01 50\sect-29.doc Page 2901 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 29 4.2 Contractor shall employ Business and Employment Coordinator(s) to work together with Esso's Business and Employment Coordinator(s) to accomplish the tasks outlined in GPS-012 and further defined in Contractor's Socioeconomic Action Plan. The Business and Employment Coordinator(s) shall be fluent in Freneh. 4.3 A reasonable proportion of Contractor's superintendence staff shall have a working knowledge of French in order to communicate with the National work force. Contractor shall have available at Work Site at all times, a sufficient number of competent interpreters to ensure proper communication of instructions and information (in English, French, Arabic, and Local languages, as appropriate). 5.0 Contractor's Duties Contractor's duties with respect to Socioeconomic Interactions include the following: General 5.1 Developing, publishing, implementing and enforcing project standards, as defined herein and in Esso's Socioeconomic Action Plan, GPS-012, included in this Job Specification, for socioeconomic interactions between Contractor, its employees, and the general populations in Chad and/or Cameroon. 5.2 Utilizing local businesses for goods and services, provided they meet quality, and reliability requirements on a competitive basis. 5.3 Ensuring that water wells used by the local population are not impacted by project water supply wells by drilling deeper and/or screening a lower water-bearing layer than that used by the local population. If water supplies are adversely affected, Contractor shall provide an altemate potable water supply to users of impacted wells. 5.4 Reporting conditions to Esso that may lead to strained relations with Local populations and working with Esso to mitigate effects from these situations. 5.5 Following guidelines in Esso's Socioeconomic Action Plan, GPS-012 in this Job Specification, for hiring of Local and National employees. The objective of these guidelines is to provide National and Local labor with employment opportunities in a manner that distributes the economic benefits of the Work equitably between Local villages. This could involve hiring a cross-section of employees from the towns or villages near the Work Site and keeping these employees for the entire Work in their country. 5.6 Providing orientation training for all employees covering health, safety, environmental awareness, and fire response procedures as per Section 27 of the Coordination Procedure. 06864000\cpmt\contract\ccps01 5O\sect-29.doc Page 2902 1 5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 29 5.7 Providing basic skill and skill development training for Local and National employees, per Section 27 of this Coordination Procedure, to prepare them to meet the requirements of their assigned jobs. 5.8 Consulting with Esso on relevant regulafions and inspections required by govemmental authorities (e.g., labor law, visas, overtime, etc.). 5.9 Recognizing the importance of religious and other customs in all dealings with its staff and labor. 5.10 Taking all reasonable precautions to prevent any unlawful or disorderly conduct by or amongst its staff and labor. Contractor shall provide protection of persons and property in association with the Work Site and against the same. 5.11 If sites of archaeological value are discovered during construction, Contractor shall leave the archaeological findings undisturbed and shall immediately reporf-the event to Esso. Esso will instruct the Contractor how to proceed with the Work. EnQapement and Payment of Staff and Labor 5.12 Making arrangements for the engagement of all labor, Local or otherwise, and providing transportation, housing, feeding and payment thereof. To the extent practicable and reasonable, employing staff and labor with the required qualifications and experence from sources within the country where the Work is being performed (Chad or Cameroon respectively). As far as practicable all labor, both skilled and unskilled, shall be residents of the region in which the Work Site is situated. 5.13 Contractor shall not recruit or attempt to recruit its staff and labor from amongst persons in the service of Esso or any of Esso's Contractors on the Project. 5.14 Contractor shall pay rates of wages and observe conditions of labor as specified Clause 2.1.12 of the Principal Document. 5.15 Preparing an Employment Plan that describes its proposed method of employee payment. The plan submitted wvith Contractor's bid, shall be updated and resubmitted with Contractor's Socioeconomic Action Plan. Elements of this plan are outlined in Paragraph 7.0. Provisions for Care of Staff and Labor 5.16 Contractor's principal duties with respect to industrial hygiene, health, sanitation and medical facilities and services are described in Section 23 of this Coordination Procedure. Additional Contractor safety and health care duties are described in Section 22 of this Coordination Procedure. 06864000\cpmt\contract\ccpsO150\sect-29.doc Page 2903 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. O Coordination Procedure - Section 29 5.17 Unless stated otherwise herein, Contractor shall provide and maintain such accommodations and amenities as it considers necessary for all its staff and labor, employed for the purposes of or in connection with the Contract. 5.18 Contractor shall arrange for the provision of a sufficient supply of suitable food for all its staff, labor and Subcontractors, for the purposes of or in connection with the Contract. If sources of adequate quality and quantity can be reasonably secured, Contractor shall purchase beef, poultry, fruits, vegetables, etc. from Local/National vendors. In order to prevent hunting of wild game in support of project food needs, wild game will not be served/consumed at project camps. 5.19 In cases where Contractor's camp moves during a work season, Contractor shall house non-Local labor at its camp(s) and have the option of housing Local labor. In cases where Contractor's camp does not move during the work season, Contractor may choose to house workers in its camp(s) or shall work with the community, local entrepreneurs and Esso to ensure that adequate housing and facilities are available, in the local community to accommodate workers without displacing or adversely affecting the existing population or environment, or overloading existing infrastructure. 5.20 Contractor shall provide, or make available, transportation to and from the Work Site to workers living away from the Work Site. Pick-up and return shall be at central points in multiple villages as necessary. 5.21 Within two weeks of cessation of temporary camp site usage, unless otherwise required by Contractor or agreed with Esso, the temporary camps/housing provided by Contractor shall be removed and the site restored, all to the approval of Esso. Water wells shall be plugged when abandoned unless Esso specifically requests that they be left functional. 5.22 Contractor shall be responsible for the return to the place where they were recruited or to their domicile of all persons employed for the purposes of or in connection with the Contract. Contractor shall also maintain such persons as are to be so retumed in a suitable manner until they shall have left the Work Site or have left Chad and Cameroon in the case of persons who are not Nationals and have been recruited from outside Chad and Cameroon. 5.23 Contractor shall make all necessary arrangements for the transport, to any place as required for burial, of any of its Expatriate employees who may die in Chad or Cameroon or while in transit to or from Chad or Cameroon to perform the Work. Contractor shall also be responsible, to the extent required by the local and national regulations and customs, for making any arrangements with regard to burial of any of its Local or National employees who may die while engaged in the Work. 06864000\cpmt\contract\ccpsO 150\sect-29.doc Page 2904 1 5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 29 6.0 Esso's Duties 6.1 Provide Contractor with a framework to hire Locals and Nationals in an equitable manner as per Esso's Socioeconomic Action Plan, GPS-012. 6.2 Consult with village and govemment officials to identify Work Site areas that may be sensitive for religious, cultural or other reasons. Identify appropriate actions to mitigate Local concerns, and notify Contractor of any related actions required by it. 6.3 Provide a Business and Employment Coordinator to interface with Contractor and the LocaVNational population regarding employment, business opportunities and other socioeconomic issues. 7.0 Contractor's Socioeconomic Action Plan Prior to Contractor beginning in-country construction activities, it shall provide arl overall Socioeconomic Action Plan Pursuant to paragraph 3.0 that details how Contractor will meet the provisions of paragraph 5.0. This plan shall include, at a minimum, the following sections: 7.1 Public Awareness Contractor shall develop a Public Awareness Plan that details how the Contractor will perform the following tasks: * Assist Esso with general consultation and public awareness plans. * Prepare public awareness material and presentations that define labor needs for local/national presentations. * Interact with Esso's Business and Employment Coordinator(s). * Be aware of and respond to changes in public attitude that might require additional public awareness action(s). 7.2 Employment Contractor shall develop an Employment Plan that details how the Contractor will perform the following tasks: * Utilize Local/National labor. * Estimate the number and type of positions to be filled by Locals/Nationals and expatriates. * Feed, house and transport Local/National labor. * Hire, pay and return home at the end of the project or at termination Local/National labor. 06864000\cpmt\contract\ccpsOl 50\sect-29.doc Page 2905 15 -Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 29 7.3 Business Opportunities Contractor shall develop a Business Opportunities Plan that details how the Contractor will perform the following tasks: * Estimate and communicate the number and type of services and goods to be provided by Local/National subcontractors and the corresponding estimated revenues/value of these business opportunities. e Utilize local/national subcontractors/vendors for services and goods. * Identify, hire and pay Local/National subcontractors. 7.4 Land Use Contractor shall develop a Land Use Plan that details how the Contractor will perform the following tasks: * Establish sites for construction activities. * Maintain sites in accordance with Job Specification. * Comply with all applicable government statutes and regulations. * Complete reinstatement of work to the satisfaction of Esso, and initialize damage claims to Esso's satisfaction. 7.5 Procedures In addition to the Socioeconomic Action Plan elements discussed above, Contractor shall provide procedures that define: * Actions and processes that will be used to achieve Socioeconomic Action Plan objectives. * Socioeconomic action approval process and scheduled dates for deliverables. * Mechanism for monitoring, enforcing, and modifying the Socioeconomic Action Plan, including responsibilities of contractor auditors and proposed methods for interacting with Esso representatives. * Process for resolving conflicts between socioeconomic and construction related issues. * Procedure for managing the change of socioeconomic personnel, goals, schedules, deliverables, or procedures. * Method for obtaining Esso approval for changes in the Socioeconomic Action Plan goals, schedule, deliverables, or procedures. * Procedure for incorporating change (improvements) to the Socioeconomic Action Plan. 06864000\cprnt\contract\ccpsO1 50\sect-29.doc Page 2906 1 5-Nov-96 Esso Exploration and Production Chad lnc. Onshore Pipeline Installation Chad Development Project Contract CCPN-01 Job Specification Revision No. O Coordination Procedure - Section 29 8.0 Procedural Requirements 8.1 Contractor shall keep proper records of the time worked by every employee engaged in the Work, the class of work on which employed, the wages paid and the training received. Records shall also reflect the numbers and types of positions held by Locals and Nationals. Such records shall be available for review at any time by Esso or any duly authorized govemment representative, and monthly labor reports summarizing this information will be submitted to Esso. Contractor shall produce, if required, such other records as may be necessary as evidence of its compliance with the requirements of Chadian or Cameroonian labor/employment laws, as well as Esso's Socioeconomic Action Plan, GPS-012. 8.2 Contractor shall submit quarterly summaries of the Local/National goods and services purchasedlutilized and the rationale for selection of all subcontractors/suppliers. 8.3 Contractor shall provide by 1 October of each year, an annual forecast of goods and service needs which could be filled by Local/National entrepreneurs and businesses in the following calendar year. 8.4 Contractor shall provide monthly reports to verify compliance with Esso's Socioeconomic Action Plan(s) and government regulations as per Section 21 of this Coordination Procedure. 06864000\cpmt\contract\ccpsO150\sect-29.doc Page 2907 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 ENVIRONMENTAL MANAGEMENT 1.0 Scope This section sets forth Esso's minimum requirements of Contractor for implementing an environmental management program to protect the Work Site and surrounding areas from unacceptable impacts. This program shall include Contractor's waste management facilities and services; soil preservation and site restoration practices, protection of plant and animal species; air, noise, and water pollution prevention measures; and environmental monitoring program. 2.0 Definitions For the purposes of this Section 30, the definitions in Section 29 of this Coordrnation Procedure as well as the following definition will apply: Hazardous Material Reactive, flammable, radioactive, corrosive or toxic material posing risk of harm to those exposed to it. Hazardous materials most likely to be used in project areas include explosives, fuels (gasoline, diesel), lubricants, solvents, chemicals for developing radiographs and sources of radiation. 3.0 General 3.1 A key factor in environmental protection is that each organization and its employees must be committed to implementing and adhering to programs that vill protect environmental resources. Contractor shall develop an environmental management plan which outlines its objectives, implementation strategies to meet those objectives, and how compliance with this plan will be monitored and enforced. 3.2 Contractor shall ensure that its operations and any facilities built (or equipment installed) for Esso's use are in compliance with all applicable environmental regulations as well as Esso project environmental standards, specifications and procedures in this Job Specification. 3.3 In order to prevent the generation of unnecessary hazardous wastes, certain chemicals and substances shall not be used on the project. These substances are listed in Table 30-1. If Contractor feels that reasonable altematives do not exist for certain applications, Contractor may contact Esso and petition for a deviation from this requirement of the Job Specification. 06864000\cpmt\contract\ccpsOI50Ssect-30.doc Page 3001 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 3.4 Contractor must satisfy project environmental standards with respect to site clean-up, restoration and reclamation and receive Esso's written acceptance of compliance before it can abandon a site. 3.5 With the exception of Contractor's soil erosion mitigation plan (described in Paragraph 9.0, below) for which a draft is required with the Contractor's bid, all plans and procedures relating to this section of this Coordination Procedure are to be submitted to Esso for approval within six (6) months of date of Contract award or three (3) months prior to in-country mobilization, whichever is sooner. 3.6 After initial submittal, all plans relating to this section of this Coordination Procedure shall be revised and resubmitted, as necessary, in order to obtain Esso approval prior to in-country mobilization. 4.0 Contractors OrQanization 4.1 Contractor shall appoint an environmental manager, environmental supervisor(s) and field environmental monitor(s) and provide a detailed description of their assigned duties and responsibilities to Esso with Contractor's overall project organization required by Paragraph 2.2 of Section 1 of this Coordination Procedure. Qualifications and required training for environmental staff shall also be provided for Esso review and approval. 4.2 Contractor's environmental organization shall have lines of authority that avoid conflict of interest with its constructionloperations organization. 5.0 Contractors Duties Contractor's principal duties with respect to environmental management shall include: 5.1 Permits 5.1.1 Consulting with Esso on environmental regulations and inspections required by govemmental authorities. Contractor shall comply with all requirements and obtain any permits that may be necessary. 5.1.2 Obtaining all necessary licenses and permits prior to start of Work. Regular liaison with government field representatives will be the responsibility of an assigned Esso representative. All conditions of agreements between the governments and Esso, and conditions of permits shall be met by Contractor. Inconsistencies between conditions of different permits will be rectified prior to start of Work. 06864000\cpmt\contract\ccpsO1 50\sect-30.doc Page 3002 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-01 5 Job Specification Revision No. 0 Coordination Procedure - Section 30 5.2 Publication, Monitoring and Enforcement of Rules and Standards 5.2.1 Detecting, reporting and removing unhealthy or environmentally unsound conditions. 5.2.2 Developing, publishing (in English and French) and enforcing project environmental standards for the Work Site. 5.2.3 Preparing, maintaining and implementing a plan for providing the required environmental protection measures as specified in this Section 30 of the Coordination Procedure and Specifications CCS 21-20-107, CCS 21-20- 108 and GPS-01 1. 5.2.4 Implementing a monitoring program for the Work. Employirrg qualified and trained environmental monitors for monitoring and reporting Contractors compliance with the environmental management standards and for documenting site conditions before Contractor begins Work in a given area (e.g. type of environment, evidence of human impacts or natural soil erosion, water quality). 5.3 Worker Education 5.3.1 Providing all workers with a resource conservation/protection briefing (in English or French, as appropriate) before they begin work (while being inducted into the on-site work force). The briefing shall contain information on sensitive and protected biological resources in the Work area, mitigation measures and environmental management prescriptions to be implemented, the importance of mitigation compliance, and any environmental hazards in the Work area. 5.3.2 Conducting monthly formal training programs (the duration of which shall depend on the number of topics requiring review) for the work force (in English or French, as appropriate) to discuss environmental hazards and environmental protection measures for the Work area and review Contractor's environmental mitigation program requirements. 5.4 Management of Chemicals and Wastes Complying with relevant Gevemment regulations and Esso guidelines regarding safe handling, storage and transport of toxic materials and hazardous chemicals (reference Section 22 of this Coordination Procedure). Although local or regional regulations may take precedence, as a minimum Esso's project environmental standards shall be applied (reference this Section 30 and related specifications in this Job Specification). 06864000\cpmt\contract\ccpsOl50\sect-30.doc Page 3003 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 5-4.1 General Waste Management 5.4.1.1 Developing and implementing a waste management program that is consistent with Esso's environmental standards and addresses the items below. Minimum requirements are provided in the Waste Management Requirements, GPS-01 1. 5.4.1.2 Providing domestic waste water collection and treatment systems for the Work camps. Minimum standards for collection and treatment systems are included in the Packaged Sewage Treatment System Specification, GPS-004. 5.4.1.3 Managing and disposing (and segregating) its wastes, and delivering its non-recyclable hazardous wastes (e.g., batteries) to Esso approved facilities for treatmentJdisposal (facilities will be located in the oil field area in Chad and at the pump station locations in Cameroon) in conformance with Esso's 'Waste Management Guidelines". Hazardous wastes shall not be transported across country borders. Minimum standards for incinerators and for landfill construction and operation are provided in GPS-006 and GPS-007 in this Job Specification. 5.4-1.4 Providing sufficient covered garbage containers at appropriate locations to ensure adequate storage capacity and prevent litter from accumulating. 5.4.1.5 Collecting and disposing of garbage and refuse on a daily basis. To avoid attracting rodents and potential predators prior to final disposal, all food-related trash and litter (wrappers, cans, bottles, food scraps, etc.) shall be placed in closed containers having tight fitting lids. 5.4.2 Handling and Disposal of Hazardous Materials 5.4.2.1 Ensuring that refueling or refilling activities, storage and maintenance activities involving hazardous materials occur in previously disturbed areas whenever possible. 06864000\cpmt\contract\ccpsOl5O\sect-30.doc Page 3004 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 5.4.2.2 Ensuring that no maintenance, refueling or storage of hazardous materials occurs within 100 meters of a perennial or intermittent stream, riparian habitat or wetland unless this is unavoidable (e.g., with certain barge mounted operations, and trench dewatering pumps). Contractors environmental manager shall approve areas to be used for storage, and handling activities involving hazardous materials. 5.4.2.3 Storing all hazardous (reactive, flammable, radioactive, corrosive and toxic) materials in appropriate and clearly labeled (in English and French) containers or vessels. Storage shall be in lined storage areas large enough to contain the inventory in the event of a spill. 5.4.2.4 Storing and handling all hazardous materials in a manner appropriate to their hazard characteristics and in accordance with Section 22 of this Coordination Procedure. 5.4.2.5 Providing sufficient fire protection systems for storage facilities to control fires and/or the release of hazardous materials to the environment. 5.4.3 Spill Prevention and Response 5.4.3.1 Developing and implementing a spill prevention and response plan to minimize the likelihood and impacts of any spills and provide for disposal of contaminated soil and debris during the Work. 5.4.3.2 Ensuring that all storage tanks and pumps are located within properly bermed areas with impervious liners to ensure that no fuel, oil, solvents, lubricants, chemical additives, or other potentially harmful substances can migrate into surface or ground water resources at any time. 5.4.3.3 Ensuring that proper precautions are followed in the special cases where mobile equipment is required to operate and refuel within 100 meters of a water-body or wetland in order to minimize the risk of fuel spills into the water-body. 5.4.3.4 Ensuring that fuel and service vehicles carry at least 10 kg of suitable commercial sorbant material for spill response so that spill containment and recovery operations can begin immediately after any release of hazardous liquids. 06864000\cpmtXcontract\ccpsO150\sect-30.doc Page 3005 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Sectton 30 5.4.3.5 Providing adequate labor and supplies for all recovery and remediation of spill sites and for the proper disposal of related waste materials. 5.5 Protection of Plant and Animal Species and Habitat 5.5.1 Ensunng that Contractors personnel do not engage in poaching; hunting; fishing; collection of vegetative material; keeping of pets; or purchase, possession, transportation, capture, sale or trade of wild plants or animals (or any parts or derivatives thereof) on the Work Site, associated right-of- way and camps, or surrounding areas. 5.5.2 Ensuring that Contractor's personnel do not engage in other prohibited activities including: a keeping of domestic stock on the Work Site and associated areas, * ittering on the Work Site and associated areas, * harassing or feeding wildlife in the Work Site and associated areas, * unsanctioned recreational use of project vehicles throughout the Work Site and surrounding areas, * possession of firearms or weapons while in the project area (except for security personnel). 5.5.3 Making it a condition of employment that expatriate employees, and all other employees housed by Contractor, comply with the restrictions above both on and off the Work Site. Monitoring project workers for compliance with these restrictions at the entrance to camps, in vehicles carrying workers and at Work Sites. 5.5.4 Working with Esso to identify trees/areas to be preserved as the Work area is defined and cleared, and protecting these from damage. 5.5.5 Inspecting all excavated trenches or other steep walled excavations, e.g. riverbank excavations, and removing any entrapped animals each morning and before backfilling. 5.5.6 Implementing suitable techniques and practices (including keeping soil disturbance to a minimum) to reduce creation of disease vector and invasive weed habitat. Using chemical or biological control as required and with the approval of Esso. 5.5.7 Cleaning newly-arrived equipment with appropriate cleansers to minimize the introduction of invasive or non-native agricultural pests or plant species. 06864000\cpmt`contractXccpsO1 50Lsect.30.doc Page 3006 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 5.5.7a Ensuring that, if construction proceeds from south to north, all equipment is thoroughly cleaned as it enters the southem end of the Mbere Rift Valley (290 km). 5.5.8 Disking areas where native invasive or weed species have begun to grow on the right-of-way, or other cleared project areas, before site reclamation. Disking shall occur before re-spreading the topsoil. If non- native species or particularly undesirable native weeds are growing in the area, then physical removal or application of herbicides to eliminate the weeds shall be performed by Contractor before site restoration begins. 5.5.9 Utilizing only existing upgradable access roads to the Work Site, whenever possible. Any new access roads shall be routed to avoid or minimize effects on sensitive environmental resources. 5.5.10 Controlling access along the Work Site right-of-way and on upgraded access roads to prevent access to and exploitation of previously undisturbed areas during construction. Erecting vehicle barriers where the Work Site crosses roads to prevent vehicular traffic from using the Work Site right-of-way. Guarding access roads at the barrier location when they are open for project-related traffic during the Work. 5.5.11 Reinstating natural barriers along the Work Site right-of-way when access is no longer needed especially near the limits of the core area of the Mbere Rift Valley (230-290 km). 5.5.12 Ensuring that the following special provisions are incorporated when the Work is near the core area of the Mbere Rift Valley (forested savanna at 230-290 kin) or relatively undegraded portions of semideciduous forest (patches within 480-520 km and 570-675 km) and Atlantic littoral evergreen forest (patches between Kribi and Lolodorf): * camps and storage facilities are located outside of these sensitive zones, except where approved by Esso, * workers are transported into and out of the construction areas each day, e worker movements and activities are restricted in these areas, e construction access is restricted to the right-of-way, o right-of-way width is minimized to the extent practical, and e all entry points to these sensitive zones are patrolled to prevent unauthorized access. 06864000\cpmt\contract\ccpsOl50\sect-30.doc Page 3007 15-Nov-96 Esso Exploration and Producrion Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 5.6 Air and Noise Pollution Mitigations 5.6.1 Ensuring that emissions from its equipment and facilities (including permanent facilities installed for Esso) meet the criteria provided in the Environmental Impact Mitigation Specification, CCS 21-20-108 in this Job Specification. 5.6.2 Ensuring that all equipment is in good condition, well maintained, and equipped with suitable mufflers to prevent excessive generation of air pollutants and noise. 5.6.3 Providing and implementing procedures for controlling noise levels near villages, townships, and urban areas. 5.6.4 Providing appropriate dust control measures, as approved by Esso, when required on a site for health, safety, or nuisance reasons. 5.7 Water Pollution Prevention 5.7.1 Ensuring that all water-body and wetland crossings comply with the standards in the Environmental Impact Mitigation Specification, CCS 21- 20-108. 5.7.2 Ensuring that all liquid effluents (e.g., sewage treatment plant effluent, process/wash water, landfill leachate) meet the criteria provided in the Environmental Impact Mitigation Specification, CCS 21-20-108, at a minimum. Keeping testing records to justify that samples are within compliance. Recording surface water quality in locations likely to receive Work or camp related effluents or Work Site run-off (before discharge begins, monthly during the Work period, and after Contractor has prepared the site for closure or Acceptance by Esso). 5.7.3 Locating all staging areas, spoil storage areas, and other additional Work areas at least 15 meters away from the edge of water-bodies or wetlands, if topographic conditions permit. If topographic conditions do not permit a 15 meter setback, then these areas must be located at least 3 meters away from the watees edge. Only in the event of a direct crossing shall vegetation be cleared between these areas and a water-body or wetland. 5.7.4 Performing all concrete coating activities, at least 30 meters away from water-bodies or welis (unless designated by Esso). 5.7.5 Conducting clearing activities so that vegetation is cut off at ground level, leaving existing root systems intact, and removing the vegetation debris from the wetland or riparian area for disposal. 06864000cpmt\contract\ccpsO150\sect-30.doc Page 3008 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-01 5 Job Specification Revision No. 0 Coordination Procedure - Section 30 5.7.6 Only using herbicides or pesticides at least 30 meters away from a water- body or wetiand. 5.7.7 Preventing flow of spoil off of the Work Site into water-bodies or wetlands. 5.8 Soil Preservation 58.1 Developing and implementing a program to minimize soil erosion on the Work Site which is consistent with the Soil Erosion Mitigation Specification, CCS 21-20-107 in this Job Specification. 5.8.2 Conducting clearing, grading, trenching, and backfilling operations as per all applicable specifications (e.g., environmental impact mitigation, soil erosion mitigation, and construction) in this Job Specification. 5.8.3 Salvaging surface material (topsoil) from Work areas and implementing soil erosion control measures as required in the Soil Erosion Mitigation Specification, CCS 21-20-107. 5.8.4 Inspecting soil erosion mitigation measures after rains and repairing them, as necessary, to ensure that the mitigation measures continue to prevent erosion during subsequent rain events. The integrity of the soil erosion mitigation shall be sufficient to provide continued protection against erosion until the site soils have stabilized and added protection is no longer necessary. 5.8.5 Selecting the site least likely to be adversely impacted by the Work, whenever reasonable, when siting borrow pits/areas. Locating borrow pits/areas away from flowing water. Locations must be reviewed by Esso. 5.8.6 Coordinating with Esso the use of latterite available at abandoned Esso sites (drilling pads, air strips, latterite pits, etc.), before creating new latterite pits for the Work. 5.9 Site Restoration 5.9.1 Performing a final site clean-up including removal of all litter, barrels, cans, drums, accidental spills and anyF other Work refuse or excess materials still on the Work Site after the Work has been completed, and before the facility is accepted by Esso. No shrub material or other plant cover shall be disturbed during this process. 06864000\cpmt\contract\ccpsOl5O\sect-30.doc Page 3009 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Instaliation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 5.9.2 Performing surface restoration and stabilization as per the Environmental Impact Mitigation Specification, CCS 21-20-108 in this Job Specification. 5.9.3 Using any excess topsoil as fill and cover for reinstating borrow pits/areas, landfill cover, or additional topsoil depth for site restoration after respreading topsoil at a depth of 150 millimeters over areas to be revegetated. 6.0 Contractor's Environmental Management Plan 6.1 Contractor's environmental management plan shall be submitted to Esso for approval within six (6) months after the date of Contract or three (3) months prior to in-country mobilization, whichever is sooner. Contractor's environmental management plan shall explain how Esso's environmental objectives, outlined herein, will be achieved during Contractor's operations. 6.2 The environmental management plan shall describe how Contractor proposes to discharge the duties set forth in Paragraph 5.0 above, and shall contain as subsets or attachments Contractor's detailed waste management plan, spill response plan, and soil erosion mitigation plan (which are defined in more detail below). The environmental management plan's elements shall include: 6.2.1 A description of Contractor's organization as defined in Paragraph 4.0 above, 6.2.2 Discussion of the environmentally related responsibilities of each position and how each position will interact with the others to ensure that the designs comply with the environmental standards and expectations, designs are followed during the Work, inspections are made, results and approvals documented, remedial actions taken as necessary, and results reported to Esso, 6.2.3 Qualifications and training that will be required for various job positions (managers, supetvisors, monitors, laborers, etc.), including environmental awareness training that will be provided for all workers, 6.2.4 A summary of environmental standards for the Work Site, including as a minimum the topics of: * Environmental monitoring and assessment (baseline and ongoing) * Soil preservation and erosion mitigations * Protection of plant and animal species and habitats * Site restoration * Waste management * Spill response 06864000\cpmt\contract\ccps01 50\sect-30.doc Page 3010 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 * Air and noise pollution * Work site controls (access, etc.) 6.2.5 The actions and processes that will be used to achieve the environmental standards and identification of responsible parties for each, 6.2.6 Discussion of the approval process and milestones for deliverables during each phase of the project (detailed design and engineering, construction, operation, etc.) as applicable, 6.2.7 A mechanism for monitoring and enforcing compliance with the plan, including responsibilities of Contractor auditors, interaction with Esso, implementation of remedial actions to resolve deficiencies, and documentation of management approval of remedial actions, 6.2.8 A process for resolving conflicts between the objectives of environmental and construction personnel, 6.2.9 Reports on environmental performance that wilf be provided to Esso, 6.2.10 Mechanism for obtaining approval from Esso for deviations from the project environmental specifications and for changing procedures/designs as necessary, 6.2.11 Procedures for managing change of personnelorganizations responsible for a task, 6.2.12 Provisions for incorporating improvements to the environmental management system. 7.0 Contractor's Waste Manaqement Plan 7.1 Contractoes waste management plan shall be submitted to Esso for approval within six (6) months after date of Contract or three (3) months prior to in-country mobilization, whichever is sooner. This waste management plan shall meet or exceed the minimum requirements for waste treatment and disposal as described in the Waste Management Requirements, GPS-01 1, and shall contain the following information: 7.1.1 A table detailing the various types of waste to be generated, projected quantity and month when they will be generated, and the preferred and altemative treatment and disposal methods for each waste (see Table 30- 2 as an example); 7.1.2 Safety/handling requirements for various wastes as applicable; 7.1.3 Methods of stabilizing wastes and preparing them for transport and shipment from generation sites to disposal sites, when necessary; 06864000\cpmt\contract\ccpsol 50\sect-30.doc Page 3011 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-01 5 Job Specification Revision No. 0 Coordination Procedure - Section 30 7.1.4 Methods to be used to transport the wastes, if necessary; 7.1.5 Steps to be taken to minimize the amount of waste generated, and recycling options that will be pursued to reduce the amount of waste requiring disposal; 7.1.6 A system to track the amount of each waste type generated, how it was managed and its final destination (Table 30-3 shows a sample data entry form). Contractor's operating waste disposal sites must maintain a computer database with records of all wastes received at the site and final destinations within the facility (e.g. which landfill cell)- Contractor's plan shall include information on its proposed software package and forms for this database; 7.1.7 The location and detailed engineering specifications for - all waste management facilities to be used; 7.1.8 A monitoring system to record oily, hazardous, and high volume waste compositions; landfill leachate quality; landfill monitoring well water quality; water treatment effluent quality; etc. monthly, or more often as specified elsewhere in this Job Specification; 7.1.9 The construction, operation, and closure standards and practices that will ,be used for waste facilities (landfill, burial pits, incinerator, sewvage treatment unit, etc.) as well as Contractor's plans for spill prevention, spill containment and treatment at waste management sites; and 7.1.10 A plan for the transition of permanent facilities from Contractor to Esso operation. 7.2 If Contractor will be operating in multiple locations, its waste management plans should include any site specific modifications to the overall plan that will be necessary for each location. 8.0 Contractor's Spill Response Plan Contractor's spill response plan shall be submitted to Esso for approval within six (6) months after the date of Contract or three (3) months prior to in-country mobilization, whichever is sooner. This spill response plan shall contain the information described in Attachment 30-1. 9.0 Contractors Soil Erosion Mitigation Plan 9.1 Contractor's soil erosion mitigation plan shall be based on Contractor's draft soil erosion mitigation plan submitted with its proposal and shall be updated within six 06864000\cpmt\contract\ccpsOl5o\sect-30.doc Page 3012 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-01 5 Job Specification Revision No. 0 Coordination Procedure - Section 30 (6) months after the date of Contract or three (3) months prior to in-country mobilization, whichever is sooner. This soil erosion mitigation plan will be used to manage impacts from Contractor's activities. Contractor's soil erosion mitigation practices shall be consistent with Esso's minimum required practices as described in the Soil Erosion Mitigation Specification, CCS 21-20-107. Site specific portions of the plan will be developed so that mitigations appropriate for the conditions at each Work Site are included. The plan shall be revised until approved by Esso as per Sub-paragraph 3.6, above. 9.2 Contractor shall propose a procedure to vary specific mitigations, as appropriate, based upon site conditions encountered during Work. Changes shall require Esso approval. 9.3 Contractor's Soil Erosion Mitigation Plan shall contain a minimum of the following: 9.3.1 Discussion of each erosion control measure required in detail. The discussion shall include: map symbol, reference detailed sketches, when and where to use the control measure and where not to use the control measure. 9.3.2 A summary legend of symbols representing each measure required 9.3.3 An estimate of the quantities of each measure to be used 9.3.4 Preliminary indication, on alignment sheets, of where (and what type) environmental control measures will be utilized 9.3.5 A typical weekly report form for reporting status 9.3.6 A typical monthly report form for reporting environmental mitigation actions, and integration of those measures into 'as built" drawingslalignment sheets. 10.0 Procedural Requirements 10.1 Contractor shall keep all records from environmental inspection, monitoring/ testing, and auditing activities for three (3) years after Acceptance, and make all documentation available for review at the request of Esso. 10.2 Contractor shall conduct regular inspections of its facilities to ensure that environmental protection measures are being implemented consistent with the requirements of Esso and all applicable regulations and permits. Written reports documenting the results of daily monitoring activities shall be submitted to Esso weekly. 10.3 Contractor shall immediately investigate all potentially serious environmental infractions that occur, and take actions to prevent them from recurring, if 06864000\cpmt\contract\ccpsO150\sect-30.doc Page 3013 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 necessary. Results of investigations will be given to Esso within a month of completion. 10.4 Contractor shall require every employee, after environmental training, to sign a letter (in appropriate language and/or explained in appropriate language until understood) stating that non-compliance with Esso's environmental policies, described in this Section 30 and the Environmental Impact Mitigation Specification, CCS 21-20-108, will be grounds for immediate dismissal. 10.5 Contractor shall cooperate with and assist Esso environmental representatives conducting inspections and audits of Contractor's environmental performance, monitoring, and reporting. Corrective and preventive actions recommended by Esso will be discussed and implemented as necessary to ensure Contractor fulfills the scope and intent of the Contract. 06864000\cpmt\contract\ccpsO1 50\sect-30.doc Page 3014 1i5Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline installation Chad Development Project Contract CCPS-01i5 Job Specification Revision No. 0 Coordination Procedure - Section 30 Table 30-1 Chemicals and Substances Not to be Used Substance to Avoid Reason for Restriction Alternatives Polychiorinated Biphenyls(PCBs) Human carcinogen, bloaccumulative. Silicones asters, cast resin. Friable asbestos Inhalation of fibers causes lung damage, Regarded by Alternatives are readily available for Insulation and roofing World Bank as hazardous substance, use to be avoided. uses. There are no clearly superior alternatives for some uses such as brake pads for trucks. Pentachlorophenol (PCP) and Human carcinogens, eco-toxins. May meet World Bank Glutaraldehyde, Isothiazolln (or other low toxicity blocide). formaldehyde (blocides) deflnition of hazardous waste when discarded. Chlorofluorocarbons(CFCs) Implicated in stratospheric ozone depletion. Over 125 Depends on use. USEPA has published lists of USEPA- nations, Including US, have agreed to virtual phase-out of accepted alternatives for various uses 11, 2]. __________________________ CFC production by 1996 Leaded paints ToxiC at relatively low levels, bloaccumulative. May meet Unleaded paints. Also, water based or low volatility World Bank definition of hazardous waste when solvent formulations can reduce potential health effects of discarded. oil based paints, Chlorinated solvents (e.g., carbon May have toxic effects (vary depending on the Non-chlorinated hydrocarbon-based solvents, steam tetrachloride, trichloroethylene). compounds). cleaning. Heavy metals (reverse emulsion Various adverse effects. May meet World Bank definition Polymer (non-latex) based formulatlons. breakers) of hazardous waste when discarded. Mercury (in pressure-measuring Neurotoxic effects. May meet World Bank definition of Differential pressure cells/transmitters, pneumatic or devices/instrumentation) hazardous waste when discarded. electric instrumentation. Lead naphthenate (lubricant) Neurotoxic effects. May meet World Bank definition of Lead-free lubricants. hazardous waste when discarded. Leaded thread compound Toxic at relatively low levels, bioaccumulative. May meet Lead-free thread compounds such as Bestolife 2000 (for World Bank definition of hazardous waste when tubing and casing). discarded. Chromate corrosion Inhibitors Hexavalent form of chromium is toxic to humans and Sulfite or organic phosphate corrosion Inhibitors, many animals. especially those wlth reduced toxicity amine function. Chrome lignosulfonate (as fluid loss Hexavalent form of chromium is toxic to humans and Carboxymethyl starches for fluid loss control. Improved controlling agent) - all right in small many animals mud control to minimize fluid loss. If used (for rheology), amounts for rheology control keep dose small and use formulations with trivalent form complexed In lignin structure. 068640G0\cpmt\contract\cps01 5f\sect-30.doc Page 3015 1 5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 REFERENCES FOR TABLE 30-1 1. United States Federal Register, Volume 59, No. 53, (59 FR 13044), Office of the Federal Register, National Archives and Records Administration, Washington, D. C., March 18, 1994. 2. U. S. Environmental Protection Agency, "Acceptable Substitute Refrigerants Under SNAP," EPA-430-F-94-014, April, 1994. 06864000\cpmt\contract\ccpsO1 50\sect-30.doc Page 3016 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 Table 30-2 Sample Table for Proiected Waste Types, Amounts, Schedule, and Management Ootions Waste Type Quantity Waste Generation Schedule (check months Preferred Alternative (Units) that waste stream will be generated) Management Management Method Method Total: _ J F M A M J J A S O N D '97 _ _ I _ _ Per Month: - J F M A M J J A S 0 N D Total: J F M A M J J A S 0 N D Per Month: ' :J-F M :A M ;-J J A S O N .D Total: ' :J F MIA M J J A S O N D Per Month: J F M A M J J A S O N D 198 _____ Total: J F M A M J J A S OIN D Per Month: J F M A M J J A S ND '98 _ Pag 31 _5-Nov-96 06864000\cprnt\contracl\ccps01 50\sect-30.doc Page 3017 1 5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 Table 30-3 CDP WASTE INVENTORY/TRACKING FORM Send to: __ Database Recorder Submitted by: Date Waste Generated: Field: Date Waste Disposed: Facility: Volume: Density: Waste Type (Check One) DisposaUfTreatment Method (check all that apply) Barrels, Drums, and Cans (empty) _ Above-Ground Contained Storage ____ Cement and Concrete Wastes (Including _ Pit Storage Cement-Contaminated Soil) Construction Debris Land Application Site Contaminated Soil (Oil) Land Treatment Site Domestic Wastes _ Composting Facility ____ Filter Hay Incinerator Fuel Oil Filter Sludge Bum Site Hydrotest Fluid Pit Burial Site : ___ Incinerator Ash Landfill (Including Trench and Burial Method) Lead Acid Batteries Water Treatment Facility NiCad Batteries In Situ Spill Treatment Paint and Coating Wastes Pigging Wastes Disposal Facility - Sludge's, Slop Oil and Tank Bottoms Site Name:_ Site Location: Unused, Spent, Expired, and Waste City/Province: Chemicals and Additives Country/Post Code:_ Used Lube Oil Wastes Check One: Used Tires On site (Contractor's) Facility Vegetation Debris Esso Facility ____ Water Treatment Sludge _ Third-party Disposal Other i Third-party recycle/reclaim Hauler Received by:_ Company: Disposal Facility: Driver: Date:_ License No: On site Destination:_ Disposal Facility to acknowledge receipt of jnaterials to originator 06864000\cpmt\contract\ccpsOl 50\sect-30.doc Page 3018 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 Attachment 30-1 SPILL RESPONSE PLAN REQUIREMENTS FOR THE WORK PERIOD 1.0 Backqround and Definitions Consistent with Esso's worldwide oil spill response organization structure, a three tiered response organization structure will be used to respond to onshore and offshore spills of differing magnitude and significance. The smallest spills would be handled by a tier 1 response. Additional tiers would be activated as the response capabilities of each operational tier is exceeded. Tier 1 response A tier 1 response would be considered after a small spill of hydrocarbons which is deemed to pose no significant threat to the environment. A tier 1 response can be handled with local resources, without recourse to outside support. A typical example of a tier I response would be a local operating organization responding to a spill of limited volume that occurred at or near a facility as a consequence of routine operations. It is expected that all of Contractors potential spills will be tier 1 spills. Tier 2 response A tier 2 response would be considered after an operational spill of hydrocarbons of moderate magnitude which is deemed to pose a tangible threat to the environment. A tier 2 response has the potential to exhaust the local resources, and would include the mobilization of national and mutual aid resources. Tier 3 response A tier 3 response would be implemented after a large or ongoing spill of hydrocarbons which is deemed to pose a significant threat to the environment. A tier 3 response has the potential to exhaust local and national resources, and includes the mobilization of intemational resources such as Oil Spill Response Limited (OSRL). 2.0 General 2.1 Spill response plans shall include prevention and response for spill scenarios likely during Contractor's operations such as a storage tank leak/failure, storage tank overflow during delivery, pipe rupture, transportation loading and unloading accidents, and refueling mishaps. 06864000\cpmt\contract\ccpsO150\sect-30.doc Page 3019 15-Nov-96 Esso Exploration and Producton Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 Attachment 30-1, continued The spill. response plans shall address spill prevention and response for all chemicals which may- be of environmental concem that will be used, stored, or transported by Contractor in its operations (e.g., fuels, lubricants, solvents), and the amount and mode of storage in each area. Contractor's spill response plan shall include the elements outlined below at a minimum: 21.1 Introduction. Defines scope of operations and summarizes response actions. 2.1.2 Notification Procedures. Defines procedures of notification to be used in the event of a spill. Parties to be notified will include Esso Management and response teams. 2.1.3 Spill Response Organization. Defines the structure for oil spill response organization, responsibilities and job descriptions, and the person(s) responsible for each job description. 2.1.4 Spill Response Equipment. Defines quantity and types of equipment required to be stockpiled at specific locations. This shall include requirements for each Work crew to have sufficient supplies of absorbent and barrier materials (suitable for use with the materials present) on-hand to allow the rapid containment and recovery of any spills. 2.1.5 Spill Risk Assessment. Defines potential most-credible and most-likely spills during Contractor's project related activities. 2.1.6 Spill Prevention. Defines activities, procedures, and equipment that will be used to prevent the occurrence of spills or, failing that, limit their impacts. This section shall describe the preventive and mitigative measures that shall be taken to: * avoid or minimize impacts of spills of fuel, lubricants, or hazardous materials, especially within any municipal watershed area or within 30 meters of any water-body or wetland, * require that all fueling and lubricating be done in areas designated for such purposes (with such areas to be located away from all wetlands and water-bodies), and * include procedures for collection and disposal of waste generated during vehicle maintenance. 06864000\cpmt\contractAccps01 50\sect-30.doc Page 3020 15-Nov-96 Esso Exploration and Producsjon Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 Attachment 30-1, continued 2.1.7 .Spill Response Options. Defines spill response options that would be used in the event of a spill. This would include guidance on spill source control and containment (actions and equipment that would be employed to minimize potential effects of spills by reducing the amount of material released once a spill occurs) as well as guidance on which response options may be more or less appropriate under certain circumstances. To the extent that certain facilities/areas are unique or pose unusual challenges, separate action plans shall be developed. 2.1.8 Recovered Chemicals and Waste Disposal. Defines methods that would be used to store, transport, and dispose of recovered chemicals and associated waste. Disposal options may include burial in landfills, bioremediation, incineration, etc. Contractor's plan shall include procedures (consistent with Contractor's waste management plan) regarding treatment, excavation and disposal of any soil materials contaminated by spillage (including materials out of wetlands or water- bodies). 2.1.9 Health and Safety. Defines procedures and equipment required for working personnel, and defines procedures and measures for evacuation of public if needed. 2.1.10 Drill and Training. Defines drill and training requirements for spill response personnel including frequency of drills/training, content of training, nature of drills, etc. Training will address personnel health and safety issues in addition to spill response operations. 2.1.11 Reporting. Defines the reporting procedures that will be followed to inform Esso of the nature of the spill, actions taken, future actions required, impacts of the spill on the environment, and the current status of the environment. 2.2 Spill response plans shall be task oriented and written in a manner which allows evaluation of their effectiveness in addressing all of the necessary topics. 2.3 Spill response plans shall be written to include contingency plans for dealing with all environments in which Contractor will conduct its operations (terrestrial, river, stream, wetland, marine). This will entail development of environment-specific procedures, which may be presented as separate sub-sections of plan sections such as spill prevention and spill response. 06864000\cpmt\contract\ccpso15O\sect-30.doc Page 3021 1 S-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 Attachment 30-1, continued 3.0 Contractor's Duties 3.1 Contractor shall notify Esso of all spills greater than forty (40) U.S. gallons (one hundred fifty (150) liters) or any spill into water within sixty (60) minutes of identification. Information provided will include the type of material spilled, location, time of spill, estimated amount of material spilled, a description of the area impacted (size, terrain, ecosystem type), threatened populations, endangered water resources, actions taken to contain the spill, current clean-up activities, and any other pertinent information. 3.2 Contractor shall provide sufficient equipment and manpower throughout the project area for tier I spill response in order to protect local resources and mitigate local damage. It is anticipated that all potential spills during Work operations would be tier 1 spills. Contractor shall design and operate its facilities and size tanks, containment areas, etc. so that this is true. If Contractor identifies spill scenarios (e.g., sensitive environments) where potential spills would not be tier 1, it should discuss these with Esso to establish a viable mitigation andlor response plan. 3.3 In the event of a tier 2 or tier 3 spill, Contractor shall respond to the best of its ability with tier 1 response equipment in order to stop the discharge and contain the spill while additional resources are being summoned. After an Esso team leader and additional response teams have arrived, Contractor shall continue to assist in the containment and clean-up operations. 4.0 Esso's Duties Notify appropriate local and national govemment agencies of spills and the measures being taken to minimize impacts and restore the site. 5.0 Procedural Requirements Contractor shall: 5.1 Report all tier 1 spills greater than forty (40) U.S. gallons (one hundred fifty (150) liters) and all spills into water to Esso within one (1) hour. 5.2 Report all tier 2 and tier 3 spills to Esso immediately after therhave been classified as not within Contractor's tier 1 capabilities. 5.3 Keep records of the type, size, and location of all spills, the response and remedial actions taken, and the status of the sites and submit these to Esso once a week. 06864000\cpmt\contract\ccps01 50.sect-30.doc Page 3022 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 30 Attachment 30-1, continued 5.4 Maintain records of the spill response training provided to each employee as well as the drills that have been conducted. Deficiencies shall be recorded and implementation status of corresponding improvements shall be documented. 06864Q00\cpmt\contract\ccpsO1 50\sect-30.doc Page 3023 1 5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Spectfication Revision No. 0 Coordination Procedure - Section 31 INTERFACE MANAGEMENT 1.0 Scope This section sets forth Esso's minimum requirements for managing the interfaces between and among contractors engaged by Esso to execute the Work. 2.0 General 2.1 'Interface" as defined in this Section can be either an organizational interface or a technical interface. Organizational interfaces occur when two or more organizations meet and need to describe who does what, how it is done and the communication flows; - Technical interfaces are either 1) a physical interface typically defining how two areas must fit together (e.g. pipelinelpump station tie-in point); 2) a system interface which is a system that goes through several areas (e.g. emergency shutdown system); 3) an information interface which is informafton exchanged between two organizations for design or other work (e.g. finished grade elevations) or 4) a shared service wherein for example, during construction multiple contractors at a location may require a service such s catering , transportation, communications or utilities. Technrical interfaces are commonly communicated using deliverables such as drawings, specifications and equipment datasheets. 2.2 Interfaces may be required between the following organizations, including their subcontractors, for execution of the Work. Any other contractor interfaces identified during the Project and required for the execution of the Work shall also be managed according to this Procedure. Field Facilities Contractor Floating Storage and Offloading (FSO) Facility Contractor Logistics Contractor(if applicable) Offshore Pipeline Contractor Onshore Pipeline Installation Contractor Pump Stations Contractor Road Upgrading Contractor - Telecommunications Contractor Chad Project Management Team 2.3 Table 1, Interface Management Matrix describes where an interface is anticipated between contracts and which contractor will be the 'Lead Contractor" j:\06864000\cpmt\contract\ccpsOI 50\sect-31.doc Page 3101 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 31 for that interface. The Lead Contractor is responsible for developing and administering the Interface Management Plan. 2.4 It is the philosophy of the Project, that to the extent possible, the interfaces between contractors be handled directly between themselves. 3.0 Contractors Organization Contractor shall identify a member of its team who shall have primary responsibility for interface management and shall be the contact for other contractors and for Esso regarding interface management issues. Said team member or designated representative shall be empowered by Contractor to make decisions and shall be readily available to meet with other contractors or Esso at the Project's vari6us Work Sites. 4.0 Contractor's Duties The principal duties for all contractors with respect to interface management on the Work includes: 4.1 Identifying interfaces with other contractors and providing a list of interfaces and schedule requirements to Lead Contractor within forty five (45) calendar days after date of Contract for incorporation into the Interface Management Plan per Section 5.0 of this procedure, 4.2 Incorporating interface coordination into work execution plans and recognizing time requirements for interfaces in schedules, 4.3 Participating in interface coordination meetings, 4.4 Reviewing, approving and complying with the Interface Management Plan, 4.5 Resolving interface problems, 4.6 Assuring interface issues do not result in changes to the scope, execution schedule or contractual obligations. Impacts or issues in conflict with these requirements must be approved by Esso in accordance with Article 7-Changes of the Principal Document, 4.7 Coordinating the participation of subcontractors, as required, in interface activities to execute the Work. Additionally, the principal duties of the Lead Contractor in an interface relationship include the following: j:\06864000\cpmt\contract\ccpsOl 5O\sect-31 .doc Page 3102 15-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 31 4.8 Preparing, maintaining, updating and implementing an Interface Management Plan, 4.9 Obtaining approval of the Interface Management Plan by other contractors and Esso, 4.10 Reporting monthly the status of interface issues and activities, 4.11 Scheduling, conducting and documenting periodic interface coordination meetings, 4.12 Identifying issues or activities to Esso and other contractors which are exceptions to the Interface Management Plan. 5.0 Contractors Interface Management Plan The Lead Contractor in an interface relationship shall submit within sixty (60) calendar days after date of Contract a preliminary Interface Management Plan for Esso's approval and for approval of interfacing contractors. Recognizing that contract awards will not necessarily coincide, Contractor shall update the Plan within sixty (60) calendar days after a new Contract is awarded to incorporate the contractor's identified interfaces, deliverables and schedule. The Lead Contractor shall resubmit the Plan to Esso for approval and the interfacing contractor for concurrence. The Interface-Management Plan shall include the following: 5.1 Contractor Interface Matrix updated for any additional interfaces identified, 5.2 List of interfaces, deliverables schedule and information requirements, 5.3 Plans for Interface Coordination Meetings including schedules, locations, meeting documentation and documentation distribution, including Esso on the distribution, 5.4 Listing of Interface Management Contacts for each Contractor, 5.5 Conflict resolution plans, 5.6 Procedures and correspondence distribution matrix for the flow of interface communication between all contractors involved including that with Esso. j:\06864000\cpmt\contract\ccpsO1 50\sect-31 .doc Page 3103 1 5-Nov-96 Esso Exploration and Production Chad Inc. Onshore Pipeline Installation Chad Development Project Contract CCPS-015 Job Specification Revision No. 0 Coordination Procedure - Section 31 TABLE I Interface Management Matrix The Contractor indicated at the intersection of two Contracts in the matrix below is the Lead Contractor for the interface. CONTRACT FF On PIL PS Off PIL FSO Road Telecom LogIstics _______ ________ ~~~~Upgrading _ _ _ _ _ Field Facilities (FF)2 FF FF U p gT L Onshore Pipeline(On PIL) Fi- PS On P/L Road T L Pump Stations(PS)2 FF PS T - - L Offshore Pipeline(Off P/L) - On P/L _ . FSO T L FSO2 _ FSO . T L Road Upgrading (Road) - Road .T L Telecommunications(T)2 T T T T T L/T' Logistics L L L Off P/L FSO L L/T' Logistics Contractor is the Lead in the interface relationship with regard to Logistics services. Telecommunications Contractor is the Lead in the interface relationship with regard to Telecommunication services. 2 Automation subcontractor interface Issues will be incorporated into respective Contractor interface plans. ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACILITIES GPS-001 Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By 0 19 Nov 96 12 CKO PRS DJS Issued for Proposals I 12 MEF DJS-Issued for Proposals 2 .2; ;r II _ 12 MEF __DJS Issued for EMP R:\Iobo5285\sarosdm\userdir\gps-001w.doc Specification No.:GPS-01 Page 1 of 12 Rev. 2 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACILITIES TABLE OF CONTENTS 1.0 INTRODUCTION ...............3 1.1 Camp Location ................................ 3 1.2 Camp Requirements ................................ 3 1.3 Camp Administrator ................................ 3 1.4 Drug and Alcohol Policy ................................ 4 1.5 Typical Problems/lssues ................................ 4 1.6 Smoking ................................ 4 1.7 Permits ................................ 4 2.0 CAMPS & FACILITIES ................ 4 2.1 Scope ................................ 4 2.2 Construction and Supply Camps ................................ 5 2.3 Esso Representative(s) Living Quarters ............... ................. 5 2.4 Specifics for Contractor Living Quarters ................ ................ 7 2.5 Aircraft Runway and Heliport ................................ 10 2.6 Communications ................................ 10 2.7 Waste Management ................................ 11 2.8 Medical Service ................................ 12 2.9 Religious Customs .............. 12 2.10 Demobilization .............. 12 R:\obc52Bs\sarosdmNuserdir\gps0OO1w.doc Specification No.: GPS-OO1 Page 2 of 12 Rev. 2 | 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACILITIES 1.0 INTRODUCTION Contractofs camp(s) for the Work shall be movable or shall be a fixed, temporary facility, whichever is most appropriate for its size and duration. With pnor Esso approval, some distinction may be made between main and secondary camps with regard to level of services. Contractor's camp shall provide life support for essential Esso, Contractor and Govemment personnel and visitors and shall comply with all goveming statutes and/or regulations and living standards of Chad and Cameroon. In the case of workers not accommodated in camps a housing allowance will be paid. As stated, all life support and logistical operations shall be conducted from Contractor's camp. Contractor shall store its permanent and consumable materials, supplies, and equipment within designated areas in or near the Camp--unless Conltractor proposes a viable altemative, acceptable to Esso, or is instructed by Esso to locate this area in another location. 1.1 Camp Location Camp(s), office facilities and storage areas should be in close proximity of the Work in order to adequately support the Work effort. The exact location of camp(s), office facilities and storage areas will be agreed on between Esso and the Contractor after the award. Land will be obtained by Esso for use as camps by the contractor. The process of land acquisition is described elsewhere. 1.2 Camp Requirements Camp(s) shall comply with all general project specifications including but not limited to General Security and Safeguards, Water Wells, Potable Water Treatment, Wastewater Treatment, and Landfill and Incinerator Design and Operation. 1.3 Camp Administrator Contractor shall employ a Camp Administrator (with prior Esso approval, full or part-time, e.g. may be a combined Camp and Catering Administrator) with sufficient experience and authority to solve, in an expedifious manner, any problems or allegations which may arise with R:\henrSSO2\sarosdm\userdirgps-OO1w.doc Specification No.: GPS-001 Page 3 of 12 Rev. 2 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACILITIES expeditious manner, any problems or allegations which may arise with regard to the services, whether administrative or operational, covered in any of the specifications. 1.4 Drug and Alcohol Policy The possession and/or consumption of alcoholic beverages is strictly prohibited. Possession and/or consumption may constitute grounds for dismissal. Drug and alcohol policy statement and implementation plan are provided in the Principal Document. 1.5 Typical Problemsilssues Contractor shall consider and be aware of typical problems and issues including, but not limited to, handling of domestic or oily water and solid wastes, safe utilization and storage of pesticides, and ongoing monitoring of the quality of drinking and waste water. In addition, awareness of cultural differences, and the project policy prohibiting hunting and fishing in the project area are mandatory. 1.6 Smoking Designated areas will be available for smoking. There will be no smoking in any of the living quarters. 1.7 Permits Contractor(s) shall provide all requested details and requirements in support of its permit applications for Work Sites or other facilities. Contractor shall provide written notification to Esso for any deviation to originally submitted requirements so that adjustment can be made to current application. 2.0 CAMPS & FACILITIES 2.1 Scope This specification applies to design and provision of camp(s) to be utilized during execution of the Work. R:\Iobo5285\sarosdm\userdirgps-001w.doc | Specification No.: GPSO001 | Page 4 of 12 Rev. 2 | 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACILTIES 2.2 Construction and Supply Camps Contractor shall fumish all camps, supplies, and living quarters, and provide all support necessary, including access roads/service, for Contractor personnel, suppliers, Esso personnel and visitors, and govemment personnel as per Section 1 of the Coordination Procedure - General Execufion Requirements. Contractor shall supply the following facilities and services at each of its camps: • Nourishing food per Catering Services Specification GPS-002 for residing camp personnel. * Bag-lunch for all personnel working outside of camp facilities. * Recreational facility, NOT to include alcoholic beverage service. * Mail service. * Laundry services, per Catering Services Specification GPS-002, for residing camp personnel. * Maintenance and janitorial service, per Catering Services Specification GPS-002. * Waste Disposal according to Esso waste management facilities specifications and approved waste management plan (as per Coordination Procedure Section 30 - Environmental Management). * Medical service, per Coordination Procedure 23 - Occupational Heatth, Medical Facilities and Sanitafion. * Security service in conformance with Esso's General Safeguards and Security Requirements, per Coordination Procedure 25 - Safeguards and Securty (S&S) at Work Sites. 2.3 Esso Representative(s) Living Quarters Contractor shall supply, and include in its contract price, temporary camp and office facilities for Esso personnel descnbed herein and in Section 1 of the Coordination Procedure - General Execution Requirements. R:Uobo5Zsarosdmkuserdirgps-O01w.doc Speci cation No.: GPS-001 Page 5 of 12 Rev. 2 T29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACILiTIES 2.3.1 Base Camps Living quarters, dining facilities, laundry services, janitorial services and all other services described or listed in specffications in this contract, shall be supplied by the Contractor, in the quantities specified in Section 1 of the Coordination Procedure. Following are specifics: * Esso personnel shall be provided with single occupancy quarters which indude a complete bathroom in each quarter and which are free of insects, rodents, and vermin. * Each living quarter shall be complete with heating, ventilation, and air conditioning (HVAC), sink, mirror/cabinet, toilet, shower, lighting, electrical outlets (one ground-fault protected near sink), smoke detector, fire exfinguisher, window(s), and locking entrance door. Each living quarter shall be outfitted with screen doors and windows, bed,. mattress, pillow, sheets, blanket(s), bath towel(s), chair, desk, lamp, shelving, closet Bed linens, towels and bath soap shall be changed twice weekly. Each living quarter shall be serviced daily, this to include as a minimum: making of bed, disposing of trash, general dusting, wipe-down of sink/mirror, disinfectant-clean of toilet, broom- clean/vacuum/mop of floor. * All buildings should be made as insect-proof as possible by sealing the gaps between units and any spaces between air conditioners and buildings. All window screens of a mesh size appropriate for the insects of the area should be in place and checked for tears. Strips 4 cm wide, impregnated with insecticide (permethrin), should be hung in doorways to help with mosquito/fly control in buildings. Permnethrin is available from Graniteville Co., Graniteville, SC (803) 663-5261, and other sources. * Bednets should be provided for each worker and for guards in their tents. R:U\obo5285\sarosdm\userdirgps.001w.doc Specification No.: GPS-001 Page 6 of 12 Rev. 2 j29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACIUTIES 2.3.2 Offices Contractor shall fumish offices for Esso's personnel and visitors as required by Section 1 of the Coordination Procedure - General Execution Requirements. Office space shall be sub-divided to provide the number of private and shared offices specified in the Coordination Procedure. A minimum of 9 m2 will be allocated for each individual in an office. In addition, space shall be provided for conference room, work stations, restrooms (male and female, as approprate), reception and open area(s). The facility shall be equipped with appropriate HVAC, sinks, urinals, toilets, lighting, electrical outlets, fire detectors, fire extinguishers, windows, and locking exterior door(s). The facility shall be provided with standard office fumishings (e.g., desks, chairs, filing cabinets and bookcases), equipment (including drawing racks, water fountain, coffee maker, and photocopier(s) with paper), and all office supplies and project stationery. Janitorial service shall be provided (as applicable from living quarters cleaning detail) on a. daily basis. 2.4 Specifics for Contractor Living Quarters Assignment of living quarters for Contractor personnel (North American, European, Chadian, Cameroonian, and others) are to be based upon general criteria relative to skill level: skillted, semi-ski led, unskilled. 2.4.1 Capacity The maximum number of persons to each living quarter shall be calculated so that each bed corresponds to a rectangle of 1.6 X 2.3 meters (approximately 5 X 8 ft) with a distance between beds of 80 cm. Triple deck bunks are not allowed in the living quarters. 2.4.2 Ventilation Fan or HVAC shall be provided to enhance circulation. Windows, vents, and doors shall be protected by screen mesh. R:Iobo5285sasdmUserdgps-1w.doc Sffcaton No.: GPS-O01 Page 7 of 12 Rev. 2 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACIUTIES 2.4.3 Doors Doors shall have unique locks (either keyed or automatic, punch- coded locks) and shall open from within (outwardly). 2.4.4 Floors Living quarters shall not have a natural ground surface. 2.4.5 Mosquito Netting All sleeping areas will be equipped with individual mosquito netfing. Bednets should be dipped and washed in a solution of cold water with 2.5% deltamethrin or permethrin to provide adequate protection. After washing, the bednets should be air dried before being retumed to the sleeping areas. Mosquito netting shall also be provided for guards in their tents. 2.4.6 Restrooms and Ablution Blocks Contractor shall provide washrooms and other facilities, as necessary, to satisfy the religious needs and customs of its wori force. Washrooms shall be located and sized based upon camp population and shall include adequate lighting and appropriate numbers of facilities. Separate facilities shall be provided for men and women. As a minimum, the following shall be provided: toilets - I per 15 persons urinals - I per 25 men shower stalls (stainless steel) - 1 per 10 persons washbasins and mirrors - 1 per 4 persons In general, washrooms shall be constructed in well-ventilated areas, and supplied with an adequate amount of hot and cold water (potable), toilet paper and holders, waste receptacles, and deodorant R:UJobo5285\sarosdm\userdirhgp6s001w.doc Specdfication No.: GPS-001 | Page 8 of 12 Rev. 2 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACILITIES 2.4.7 Potable Water Supply The potable water supply shall be designed and tested according to standards of the World Health Organization; see Potable Water Treatment, Storage and Distribution (Temporary) Specification, GPS-003. Potable water shall be supplied to all showers and sinks located in kitchens, bathrooms, and offices. All camp taps shall deliver potable water. 2.4.8 Electrical Power For security purposes, there shall be a redundant (backup) source of electrical power, independent of the primary power source. Camp power shall adequately supply all electrical requirements. 2.4.9 Fuel Storage Storage of flammable liquids (diesel and gasoline) shall be in above-ground storage tanks located in properly lined and. bunkered holding areas. Unless an altemative remediation method is provided for in the Esso - approved Contractor Waste Management Plan, contaminated soil associated with vehicle fueling operations will be promptly collected and stored until it can be properdy disposed. All flammable liquid storage areas shall be located a suitable distance from all manned facilities. 2.4.10 Kitchen See Catering Services Specifications, GPS-002. 2.4.11 Dining Area All windows and doors shall be protected by mesh screen and shall be kept in good condition. Doors shall be automatically closing (e.g., by coil spring or spring and hydraulic piston-) Dining areas, living quarters, and restrooms shall be located in close proximity to each other. R:\tobo285\sarosdm\uerdir\gps-01w.doc Specification No.: GPS-001 Paoe 9 of 12 Rev. 2 | 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACILITIES 2.4.12 Recreational Facilities Contractor shall provide off-hours recreational facilities for Contractor and Esso employees and camp guests. Facilities may include an area(s) for organized team sports such as basketball and soccer and/or indoor exercise equipment, as appropriate for the size and duration of the camp. in addition, Contractor shall provide a recreational room(s) to include but not be limited to television(s), VCR(s), satellite dish(s), short wave radio(s), and books and periodicals in appropriate languages. 2.4.13 Control of Insects and Rodents Pest control is the Contractors responsibility. Contractor shall utilize insecticides and pesticides approved by the Esso Medical Department. Insecticides and pesticides shall be utilized in a controlled manner so as to avoid contamination of food and personnel. The. Contractor shall emphasize insect and rodent control, making sure that garbage areas are clean. Contractor will take immediate action if a rodent situation should arise in the facilities. 2.5 Aircraft Runway and Heliport At main camps and storage yards, a helipad is required if there is not an existing aircraft runway located within 30 minutes by ground transport. The camp helipad will be in close proximity to the secured areas of the facility, and be convenient for urgent air medical or security evacuation. Contractor shall present a plan, subject to Esso approval, outlining aircraft availability and emergency transportation plans. 2.6 Communications A means of voice, fax, and data transfer capability is required, to enable personnel to communicate between the various camps and facilities. Esso intends to provide, (except for early project work activities - i.e. infrastructure and telecom) as part of its overall project support a reliable telecommunications system to provide the above capabilities at each of the project locations. See Coordination Procedure Section 28, Telecommunications. R:\Iobo5285\sarosdm\userdirgps-001w.doc Specification No.: GPS-001 Page 10 of 12 Rev. 2 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACILITIES 2.7 Waste Management All waste shall be handled and treated in accordance with the Waste Management Guidelines GPS-011, Environmental Impact Mitigation Specifications, and Coordination Procedure Section 30 - Environmental Management. 2.7.1 Uquid Waste Sanitary sewage shall be handled by a Wastewater Treating Plant (see Packaged Sewage Treatment System (Temporary) Specification GPS-004) which will be sized according to camp population such that effluent undergoes sufficient treatment to be suitable for discharge to surface waters (free of bacteriological and organic pollutants). Alternatively, for small camps a septic tank system with effluent disposal into a drainage field may also be suitable (specifications are given in GPS-018 for those contracts for which septic systems may be applicable). Other water treatment systems may be approved by Esso if the treatment standards of the Environmental Impact MitigatiorL Specification will be satisfied. 2.7.2 Solid Waste Contractoes Waste Management Program shall provide a mechanism for disposal of all solid waste products avoiding social, economical, and ecologicaVenvironmental problems, and protecting aesthetics and health. Prior to mobilization, Contractor will prepare and submit, for Esso approval, a Waste Management Plan as per Section 30 of the Coordination Procedure - Environmental Management. Solid waste will be disposed of per Contractor's Waste Management Plan which shall be consistent with Esso specifications and guidelines for waste management practices and treatment and disposal facilities. The following requirements will also apply: Trash and rubbish shall be collected on a schedule that does not allow for accumulation of trash in bins, with an adequate number of wheeled and well-sealed large bins having been placed by contractor. R:\IoboS285\sarosdm\userdir\gps.001w.dOc Speciftcaton No.: GPS-001 Pagel1 of 12 Rev. 2 [ 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CAMPS AND FACILITIES * Bins shall be washed daily using disinfectant * Construction debris shall be separated and disposed of in proper manner, depending on the origin and condifion. Recycling and reuse opportunities will be used where practical. 2.8 Medical Service All health/medical service issues will be consistent with Esso's Health Plan, and Medical Service Guidelines for Remote Sites (GPS-010) and will be approved by Esso prior to mobilization. Contractor shall submit for Esso approval, a medical plan including the number of doctor(s), physicians assistant(s), and nurse(s) to be utilized for the planned work force and staff in addition to planned sickbay facilities. The medical plan requirements are provided in Section 23 of the Coordination Procedure - Occupational Health, Medical Facilities and Sanitation. 2.9 Religious Customs Contractor shall provide prayer rooms and other facilities, as necessary, to satisfy the religious needs and customs of its work force. 2.10 Demobilization 1) Before demobilization of any camps or facilities, Contractor shall submit a demobilization plan for Esso's review and approval. 2) Esso reserves the right to request non-demobilization of any or all temporary facilities. 3) Contractor shall be responsible for complete restoration of areas utilized for camps and storage areas not needed by subsequent project contractors to their original state, in accordance with the Environmental Impact Mitigation Specification (CCS-21-20-108). 4) A final demobilization inspection will be completed by Esso and Contractor prior to site release. R:Mobo528s\sarosdmluserdWigps0OO1w.doc I Specification No.: GPS-001 Page 12 of 12 Rev. 2 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES GPS-002 Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By 0 19 Nov 96 20 CKO PRS DJS Issued for Proposals I 19 Jun 97 20 Issued for Proposal 2 3c 20 MEF DJS Issued for EMP R:\henr59O2'.sarosdm\userdir\gps-002z-doo Specification No.: GPS-002 Page 1 of 20 Rev. 2 _30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES TABLE OF CONTENTS 1.0 PURPOSE .............................................................................4 1.1 Overview ............................................................. 4 1.2 Planning and Execution ............................................................. 4 1.3 Drug and Alcohol Policy ............................................................. 4 1.4 Overall Scope of the Services ............................................................. 5 1.4.1 Meal Service ............................................................. 5 1.4.2 Sanitation of Facilities and Garbage Collection, Segregation and Disposal ... 5 1.4.3 Coffee Service .............................................. 5 1.4.4 Lodging, Laundry and Ironing Service. 5 1.5 Contractor Personnel Requirements. 6 1.5.1 Hiring and Periodic Medical Examinations. 7 1.6 Training. 8 1.7 Reporting. 8 1.7.1 Cleanup and Cafeterias. 8 1.7.2 Personnel Administraton. 9 1.8 Equipment, Spare Parts and General Goods to be Supplied by Contractor . 9 1.8.1 Equipment. 9 1.8.2 Vehicles. 9 1.8.3 Spare Parts. 9, 1.8.4 Refrigeration Units. 9 1.8.5 HVAC. 9 1.8.6 Exhaust Fans and Filtered Ventilation .10 1.8.7 General Goods .10 1.8.8 Maintenance .10 1.8.9 Floor Surface .10 1.8.10 Table Tops and Counter Tops .11 2.0 SPECIFIC OBLIGATIONS FOR EACH SERVICE .11 2.1 Meal Service ................................................11....... I 1 2.1.1 Test Sampling of Food . 11 2.1.2 Food Transportation and Storage . 11 2.1.3 Regulations and Specifications for Providing the Service . 11 2.1.4 Menus . 15 2.1.5 Noxious Food . 15 2.1.6 Coffee Service . 15 2.1.7 Quality Control . 15 2.2 Cleaning and Sanitation ...................... 16 2.2.1 Services and Schedule .16 2.2.2 Overall Requirements .17 2.2.3 Washing and Ironing Service Requirements ........................ ....................... 18 R:\henrS9O2\sarosdm\userdir\gps-002z.doc L Specification No.: GPS-002 Page2of 20 Rev. 2 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES 2.2.4 Housekeeping Service Requirements ......................................................... 18 2.2.5 Requirements for Garbage Collection, Segregation and Disposal ................ 18 2.2.6 Control of Insects and Rodents ...................................... ................... 19 2.2.7 Special Facilities Sanitation Service - Medical Center .................................. 19 R-\henr5s92\sarosdm\userdi\gps0OO2zidoC Specification No.: GPS-002 Page 3 of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERViCES 1.0 PURPOSE Contractor will provide Esso and Contractor employees and visiftors with meal, laundry, housekeeping and office cleaning services at project camps as per Section I (General Execution Requirements) and Section 29 (Socioeconomic Interactions) of the Coordination Procedure. 1.1 Overview The-services will entail materals, food, supplies, labor, supervision and all that is needed to perform these services, including: meal preparaffon, housekeeping, garbage/waste collection, segregation, storage and incineration. In additon, Contractor shall be responsible for cleanliness and sanitation of cafeteria(s), offices, recreation areas, personnel housing, medical center, warehouse and workshop areas, parking areas, and guardhouses. All services will be performed according to requirements of the Job Specification. With prior Esso approval, some disfinction may be made between main and secondary camps with regard to level of services. 1.2 Planning and Execution Contractor shall employ all the resources and personnel required for planning, scheduling and estimating materials, equipment and goods, including all supplies, foodstuffs, cleaning elements and other equipment needed for the efficient safe and hygienic performance of the services. Contractor shall have plans prepared, prior to mobilization, for Esso approval, that provides for foodstuffs, meals and the maintenance of all equipment required in the operation. Contractor must also present at the same time, to Esso, its updated procedure manuals for each of the activities. Likewise, Contractor must have personnel to properly manage the purchasing, transportation, receipt and storage of all foodstuffs, materials, equipment, and goods required to provide a proper service. 1.3 Drug and Alcohol Policy The possession and/or consumption of alcoholic beverages is strictly prohibited. Possession and/or consumption may constitute grounds for dismissal. Drug and alcohol policy statement and implementation plan are provided Principal Document. R:lhenr5S9O2\sarosdm\userdir\gps-002z.doc Specification No.: GPS-002 | Page 4 of 20 Rev. 2 30Oct7 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES 1.4 Overall Scope of the Services Contractor will provide the following services: 1.4.1 Meal Service Contractor will provide, at no cost to employees, meal services in Contractor operated and managed cafeterias, at all camps. This will include purchasing, preparing, serving and cleaning up. 1.4.2 Sanitation of Facilities and Garbage Collection, Segregation and Disposal Contractor will perforn all cleaning services, as well as those of garbage collection, segregation, incineration, transportation, and disposal, at all facilities under its charge. Said activities shall be performed according to procedures agreed to by Contractor and Esso pror to mobilization. 1.4.3 Coffee Service Contractorwill provide coffee service as described in 2.1.6. 1.4.4 Lodging, Laundry and Ironing Service Contractor shall assign lodging and shall limit access to only authorized personnel. Project personnel shall be supplied with a clean supply of linens and cleaning implements for personal use. These items shall include but not be limited to: a set of bedding for single bed (bottom sheet, top sheet and pillow case), quilt, blanket, hand and body towels, floor mat, mattress cover, unscented soap, shower curtain, potable water and disposable cups. Keys and key holders will be replaced at Contractor's expense when lost by personnel requirng them. Laundry and shower areas which can provide resting sites for adult mosquitoes should be sprayed every 3 days vith chemical grade R:\henS902\sarosdmn\srdii%ps-002z.doc | Specification No.: GPS-002 Fage5of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES CHEM REZ-25 or deltamethrin using hand-held sprayers. Spraymen should wear goggles, nhitle-gloves, and a respirator during mixing and application. Outer clothing of workers should be treated with deltamethrin or permethrin by the laundry personnel. Dipping and washing clothes in a solution of cold water with 2.5% deltamethrin or permethrin should provide adequate protection against mosquitoes. After washing, the clothes should be air dried before being retumed to the workers. Deltamethrin or permethrin will not fade or stain clothing, and it will not leave a noticeable odor. It remains protective through up to 40 washings with hot water and soap. Bednets should be treated with deltamethrin or permethrin as described above for clothing. They should be kept cdosed around beds at all times, even when no one is sleeping in the bed. Bednets should be treated with deltamethrin or permethrin every 3 months. Washing, drying, and ironing of all clothing and bedding from the Medical Center must be done separately from the laundry of the camp residents. Biodegradable soaps and detergents are mandatory. All laundry will be treated with permethrin or deltamethrin insecticide. Laundry bags will be kept in each of the rooms for persons staying ovemight at the camps, in order to provide them with the laundry service. All clothing and bedding will be ironed with a hot iron prior to retuming to camp personnel. 1.5 Contractor Personnel Requirements Contractor shall employ a Catering Administrator (with prior Esso approval, full or part-time, e.g. may be a combined Camp and Catering Administrator) with sufficient experience and authority to solve, in an expeditious manner, any problems or claims which may arise with regard to the services, whether administrative or operational, covered in the specifications. It is the Contractor's obligation to maintain, within the minimum personnel required, one (1) kitchen Chef (Head Cook) and one (1) nutritionist or food engineer on a full or part-time basis, for the duration of camp operations. R:\henr590OZsarosdm\userdir\gps.002z.doc Specification No-: GPS-002 Page 6 of 20 Rev. 2 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES 1.5.1 Hiring and Periodic Medical Examinations Hiring medical examinations must be perforned on all food handlers according to the legal requirements and the Job Specifications. Emphasis shall be placed on contagious diseases, dernatological and respiratory problems, gastric disorders and oral infections. This information must be recorded in the personnel medical records, especially designed for this purpose. Hiring Exams for Non-Food Handling Personnel: (lodging, laundry and ironing service) General medical examination (stating the absence of infectious or contagious diseases and of skin ailments) Hiring Exams for Food Handling Personnel: • General medical examination (stating the absence of infectious or contagious diseases and of skin ailments) * Urinalysis * Complete blood count * Thoracic X-ray and electrocardiogram as indicated * Microscopic exam of fresh stool for ova and parasites Periodic Examinafions: * Exam periods shall be determined by the risks. At a minimum, exams must be carried out quarterly. * Esso reserves the right to perform directly or through third parties, whatever medical examinations it considers necessary and to modify the requirements mentioned whenever it considers that it is necessary. * A copy of each catering service employee's clinical history will be forwarded to Esso's Medical Department. Contractor will keep the originals which will be available for Esso's inspection. These are confidential documents and Contractor is responsible for handling them in a secure manner. RA\henrS9o2\sarosdm\userdir'gps-002z.doc Specification No: GPS-002 Page 7 of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES * Contractor is required to immediately report any illness or injury of food handlers to Esso's Medical Director and to report any corrective actions taken to verify the quality of the food supply. * Esso reserves the right to request Contractor to withdraw from service any personnel who, in Esso's judgment, represents a health risk. 1.6 Training If Contractor elects to utilize local/natfonal labor in the execution of catering services he shall be responsible for training to include but not be lirfiited to the following: * Personal hygiene * Facility sanitation and disinfection * Housekeeping service regulations * Food storage, preparation and service standards * EBasic laundry practices * Laundry practices for contaminated medical garments * Garbage collection, segregation and disposal * Proper procedures for control of insects and rodents * Insecticide usage 1.7 Reporting Contractor will submit succinct reports, as per the formats established by Esso for such purposes, to the Esso site manager for the following items: 1.7.1 Cleanup and Cafeterias Monthly scheduling of the cleanup brigades, particularly for disinfecting and pest control, to be carried out in the various facilities in Contractoes charge. Weekly reports of inspections carried out on the catering facilities, along wfith a listing of any irregularities found and correctve action implemented. R:\hentS9O2\sarosdm\userdirAgps-OO2z.doc | Specification No.: GPS-002 | Page 8 of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES 1.7.2 Personnel Administration Monthly reports on the following: * Hiring and ternination of personnel, * Personnel training (indicating content and duration of course), and * Occupational health actvities. 1.8 Equipment, Spare Parts and General Goods to be Supplied by Contractor 1.8.1 Equipment It is Contractor's responsibility to provide all equipment, spare parts and general goods required for the performance of the services. 1.8.2 Vehicles It is the Contractor's responsibility to provide vehicles for the transportation of Contractor personnel, materials and everything relating to the performance of these services. The required vehides must meet all industrial and project safety regulations defined in Coordination Procedure 22 - Project Safety Practices. 1.8.3 Spare Parts Contractor will supply all the spare parts required to perform maintenance on its equipment 1.8.4 Refrigeration Units Contractor shall provide adequate walk-in freezers and refrigerators sufficient to properly provide safe cold storage. Large units shall have a functioning thermometer. R:\henr59O2\sarcsdm\userdir\gps-002z.doc Specification No.: GPS-002 Page 9 of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES 1.8.5 HVAC Contractor shall provide adequate air-conditioning units for both kitchens and food serving! dining areas. 1.8.6 Exhaust Fans and Filtered Ventilation Contractor shall provide adequate exhaust fans and frequently cleaned filtered ventilation systems for both kitchen and dining areas. These must be of appropriate size to effectively provide ventilab'on. 1.8.7 General Goods Contractor must supply, among other things: kitchen materials and implements (pots and pans, appliances, etc.), napkins, disposable cups, aluminum foil, plastic wrap, drinking water bottles, plastic garbage containers with lids, garbage bags and clear bags for food storage, waste paper baskets for restrooms, mops, brooms, polishers, buckets, deodorizers, detergents, disinfectants, toilet paper, plastic bags for sanitary napkin disposal, unscented soap with wrapper, liquid soap and dispensers, paper hand towels and' dispensers for restrooms and paper towel rolls for food handlers and any other elements needed for the satisfactory performance of the catering services. Cloth towels are to be avoided in food preparation and food serving areas. The following dining room general items, although not exclusively, shall be supplied: break-resistant tableware, flatware and trays; condiments; napkins; toothpicks; table cloths and linen. Sinks, brushes, soap and paper towels for hand washing must be provided in the immediate mess area. 1.8.8 Maintenance It is Contractoes responsibility to perform a proper maintenance to guarantee the operability and long life of the equipment. The use of garbage disposal units is prohibited in the kitchen. R-\henr59O2\sarosdm\userdir\gps-oo2z.doc Specification No.: GPS-002 Page 10 of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES 1.8.9 Floor Surface Kitchen and food preparation area floors must be non-porous and be surrounded by mop-board type molding at least 10 cm (4 inches) in height to facilitate frequent disinfectant mopping. 1.8.10 Table Tops and Counter Tops Contractor must surface all tables and counters in food service and food preparation areas with non-porous coverng suitable for frequent disinfectant cleansing. 2.0 SPECIFIC OBLIGATIONS FOR EACH SERVICE 2.1 Meal Service Meal services consist of providing balanced meals and nutrition of optimum organoleptic and microbiological quality. 2.1.1 Test Sampling of Food Bacteriological tests must be performed periodically at the location during each phase of food preparation. 2.1.2 Food Transportation and Storage Contractor must guarantee an adequate system of purchasing, transportating, preserving and handling of foodstuffs from supply point or source to the camps observing the minimum and maximum temperature and humidity conditions required for each type of food, so as to preserve these foodstuffs in optimum conditions of quality. All foodstuffs must be transported and stored observing reasonable health procedures. 2.1.3 Regulations and Specifications for Providing the Service 2.1.3.1 Meals Contractor will provide, prepare and serve breakfast, lunch and dinner eveiy day and to each person residing in the camp(s) and to guests authorized by Esso. Furthermore, R:\henrS902\sarosdm\userdirxgps-002z.doc r Specification No.: GPS-002 PIel1 of 20 Rev. 2 30 Oct 97 - ~ESSO EXPLORATION & PRODUCTIONv CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES lunches shall be provided to all employees who are not camp residents. Coolers will be provided, if necessary, to ensure that lunches in the field do not spoil. Contactor shall provide meals to disabled personnel in rooms or Medical Center. 2.1.3.2 Temperature Food temperature at tfme of serving must be consistent with U.S. Public Health Service (USPHS) Requirements or other similar intemational standards agreed to by Esso's representative. 2.1.3.3 Spoiled Food or Food with Past Expiration Dates Contractor may not utilize food with past expiration dates or food that is deteriorated or spoiled. Esso reserves the rght to inspect foodstuff warehouses and storage places for the purpose of verifying that the foodstuffs stored there do meet the minimum requirements mentioned above. In the event that Esso officials find food with expired dates or deteriorated or spoiled food, they will proceed, together with Contractor, to destroy the products. 2.1.3.4 Meals According to Religious or Ethnic Custom Contractor shall operate kitchens and meal service to meet the demands of a diversified multi-nafional work force. To the extent possible, Contractor will purchase foodstuffs nationally. Under no circumstances shall "bushmeat" or wild game be purchased for preparation in the camp kitchens and served in camp cafeterias. 2.1.3.5 Food Supplies Contractor must keep a record of stock inventones, which must be available for periodic inspections by Esso. R:\henfS9O2\osdm\userdir\gps.002z.doc Specification No.: GPS-002 | Page 12 of 20 Rev.2 30Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES The main warehouse will be the site assigned to store, classify and wash the foodstuffs, as required. The receptacles utilized for holding food must be washed hygienically before use. Contractor must carry out disinfecting in the cold storage rooms at least once a week or whenever requested to do so by Esso. 2.1.3.6 Food Service Hygiene Contractor must * Handle food according to the highest sanitary and hygienic standards developed by the USPHS or similar intemational standard agreed to by Esso's representafive. * Enforce hygiene and cleanliness standards for all food services personnel, ensuring that they wash their hands before handling food. To this end, there must always be liquid soap, disposable towels, finger nail brushes, and disinfectant available for washing hands * Keep its personnel supplied with uniforms, shoes, caps and cooks hats, hair nets, face masks and gloves for handling food. In addition, the personnel must be supplied with the following protective gear: Gloves for food handling, protective gloves for cutfing operations, plastic boots and aprons for washing and disinfecting the cafeterias. * Ensure that the personnel tending to the service line use white aprons, different from those utilized during the food preparation. * Make available the procedures manual for the cleaning and disinfecting of utensils, dinnerware, silverware, tables and hot tables, freezers, etc., to be utilized in the performance of the Contract These procedures may be modified in agreement with Esso. R:\henrS9O2\sarosdmXuserdir\gps-002z.doc Specification No.: GPS-002 | Page13of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES 2.1.3.7Tidiness and Cleanliness Contractor must clean, tidy up and disinfect all facilities under its care and in so doing bear the responsibility of upholding the highest standards of cleanliness, neatness and hygiene. Esso will carry out periodic inspections at its facilities and will forward any pertinent observations, which shall immediately be addressed by Contractor. Cleaning, disinfecting and tidying up will be done on tables, places where food is processed, chairs, grills and equipment in general, after every serving, utilizing biodegradable disinfectants and detergents. Kitchen equipment and utensils, including silverware, dinnerware and glasses will be washed with biodegradable detergents and disinfectants after each serving. The grease collector, the smoke exhaust funnels and the ventilators in the kitchen and cafeteria, will be cleaned at least once a week or more often, as needed. The freezers, cold storage rooms and storage cupboards wii7 be kept clean and disinfected according to the highest standards of cleanliness and free of residue and garbage. Special attention will be paid to pest and rodent prevention in the storage and bakery areas. Contractor must clean the cafetera tables and chairs before, during, and after each meal. The floors will be wet-mopped after each serving, washed during the day and scrubbed at least once a week The windows must be cleaned at least once a month. Kitchen utensils and implements, dinnerware and silverware must be washed and sterilized after each serving. Refrigerators, foodstuff storage places, vegetable preparation rooms, etc., must be kept clean and waste free. Any screen-wire utilized on doors and windows must be kept in excellent repair. Contractor must make a diligent effort to keep the cafeteria and kitchen areas free of flies, mosquitoes and other insects, rodents and other pests. R:\henr59D2\sarosdmXuserdir\gps-002z.doc Specification No.: GPS-002 Pagel4of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES All public restrooms must be cleaned at least two (2) times per day. Restrooms must be kept supplied with protective paper toilet seat covers, toilet paper, paper towels, liquid soap and dispensers. Biodegradable detergents must be used, to uphold the highest degrees of hygiene and environmental protection. The floors, baskets and trash and garbage receptacles must be washed and disinfected daily. Garbage receptacles must be covered when not in use and kept at a distance from the food handling and processing areas. 2.1.4 Menus Contractor shall offer balanced menus for breakfast, lunch and dinner, incorporating recommendations made by the nutritionist. 2.1.5 Noxious Food Esso reserves the right to determine which ingredients in the preparation of the meals are harmful to health and to prohibit the use of said products. - 2.1.6 Coffee Service Contractor shall provide free coffee and tea in the camps at designated locations. The designated coffee areas shall have related supplies and shall be kept in a state of cleanliness and hygiene at all times. 2.1.7 Quality Control Contractor must create and implement a Quality Control system for all products associated with camp food supplies, meal preparation and sanitation; in particular, perishable goods or those classified as having a high epidemiological risk. Said system must control, at least, the following: The fixing of organoleptic or physical-chemical parameters for fruits, meats, eggs and milk products. This will include washing fruits, vegetables, etc. in potassium permanganate, or chlorine solutions to kill disease causing organisms. R:\henr59O28sarosdm\userdir\gps-002z.dcc r Specification No.: GP.S4002 Page I5 of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES Controls for perishable foodstuffs to include an ongoing verificaton of the packaging of said products and the conditions of transportation. * Inspection of the system, handling and quality of frozen meats and fish. There will be at least one Contractor representative present in the cafeteria during meals, who will be responsible for the promptness and efficiency of the service. 2.2 Cleaning and Sanitation 2.2.1 Services and Schedule The services described below include, but are not limited to: all materials, articles, food products, supplies, labor, and supervision necessary to provide the services of cleaning, sanitation and hygiene, garbage collection and recycling, at the sites mentioned in Section 1.1 as well as room, laundry, and cafeteria services. Service Frequency Comment Cafeteria Service 7 days a week according to schedules which adjust to the needs of _project operations Laundry 6 days a week according to schedules which adjust to the needs of project operations Garbage Collection, 7 days a week Segregation and Disposal Sanitation and Cleaning 7 days a week The Contractor shall: . Sweep, mop, dust daily and wash weekly or more frequently, if needed. Debris will be removed as necessary. * Periodically wash the walls, windows, ceilings and doors RA\henr59O2\sarosdm\userdir\gps-002z.doc Specification No.: GPS-002 Page16of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES 2.2.2 Overall Requirements Contractor must fulfill the following general requirements, as a minimum, for the performance of the sanitation and cleanup services being considered in this section. It is also its responsibility to carry out periodic inspections in order to guarantee compliance with said standards: DUTIES PERFORMANCE STANDARD Refrigerators Must be kept clean and free of frost Water Fountains Water fountains must be kept clean and disinfected. Obstacles must be removed and leaks repaired immediately. Sweeping A well-swept floor should not show signs or dust pan tracks. Dirt should not be left in the corners, behind the doors or under the carpets or fumiture. Cleaning equipment and implements must be put back in their place. Rooms must be left in an orderly fashion. Mopping Floors must be scrubbed with a damp cloth (not wet) and a mop with cleaning solutions (detergents, bactericides deodorizers or similar products). Wall Washing There must be no visible streaks nor markings. Wood panels, as well as corners and other hard-to-reach areas must be clean. Vacuuming If carpeted, personnel rooms and medical facilities must be vacuumed twice weekly. Restrooms Restroom areas must be scrubbed and disinfected twice daily. Toilets, basins and urinals must be kept clean inside and out. Trash Removal All areas where trash, waste, sand, etc., tend to gather, as well as access ways, passageways, flat areas, must be kept cleared. R:'henrS9O2\sarosdmAuserdirigps-OO2z.doc Specification No.: GPS-002 Page 7 of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES 2.2.3 Washing and Ironing Service Requirements Laundry services vAl) be operated for everyone staying at Contractors camp. Laundry facilities are to include procedures and provisions for permeation of clothing, barrier curtains, uniforms, mosquito nets, and other designated materials with Esso approved insect repellent solutions (generally Pernethrin based). Laundry procedures will include the following tasks: hot iron all washed items; sweep, mop, dust, and constantly remove accumulations of lint and fibers from the washers and dryers; maintain the laundry equipment free from detergent, soap and chemical residue used in the laundry process. Clothing from the medical center must be handled separately and the utmost care and control must be exercised in its disinfection. Chlorine bleach and hot wash cycles are to be used. 2.2.4 Housekeeping Service Requirements Housekeeping service must include cleaning of the housing module, sweeping and waxing of floors, making of beds, complete cleaning of each bathroom, change of soap and a supply of toilet paper, as required, change of bed clothing and towels at least two (2) times a week. 2.2.5 Requirements for Garbage Collection, Segregation and Disposal Contractor will collect garbage and wastes daily or more often if necessary, at the following locations: kitchen, living areas, offices and workshops described in the terms of the CONTRACT, common areas and access ways. Garbage and wastes will be deposited in cans and containers until they are picked up. bearing in mind the following potential segregation categories: . Paper . Wood * Plastic . Ferrous Metals * Glass * Food Products * Non-Ferrous Metals R:\henr59O2\sarosdm\userdir\gps-002z.doc Specification No.: GPS-002 Page 18 of 20 7 _Rev. 2 30Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES Contractor is obligated to apply Esso's requirements conceming garbage, including collection, storage and disposal, as stated in Section 30 of the Coordination Procedure - Environmental Management. 2.2.6 Control of Insects and Rodents Contractor shall emphasize insect and rodent control as a major priority, daily ascertaining that garbage areas are clean and free of rodent signs. Immediate action must be taken should a rodent situation arise in the camp. * All pesticides must be approved by Esso prior to purchase, storage or use. Cleaning will include the application of insecticides and disinfectants approved by Esso. It is mandatory to utilize household-type insecticides and baits, excluding pest and rodent control services in outside areas and general fumigation in the entire plant. Dirty or standing water and organic residues produced by the kitchen and food service areas will be disposed of on a daily basis. Holes and depressions that could trap standing water shall be filled. 2.2.7 Special Facilities Sanitation Service - Medical Center Facility Sanitation and Disinfecting Sanitation and disinfecting of these facilities will be defined by Esso's Health, Safety, Environmental (HSE) personnel, in coordination with Contractors personnel. At a minimum, medical facility must be mopped with disinfectant detergents two (2) times per day. Additional mopping will be carried out as requested and under the direction of medical personnel. It is important that cleaning implements utilized in the Medical Center not be utilized outside this facility. R:\henr5902\sarosdm'nuserdir\gps.002z.doc I Specification No.: GPS-002 Page19of 20 Rev. 2 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR CATERING SERVICES Collection, Washing, Ironing and Delivery of Clothing The procedure for Medical Center laundry collection, washing, ironing and delivery is to be performed separately from other camp laundry (a separate washer, dryer and iron must be employed). HSE will define other recommendations on this particular process to Contractor. Cleaning of facilities must be done at least two (2) times per day. R:AtenrS902\sarosdm\urerdit gps-002zIdoc Specification No.: GPS-002 Page 20 ocf 20 Rev. 2 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT -\~i~ebmarL. Praje t GENERAL PROJECT SPECIFICATION FOR POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) GPS-003 Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By 0 19 Nov 96 11 FREICKO PRS DJS Issued for Proposals 1 4 2 .71 1 MEF DJS Issued for EMP R.khenrS9O2tsarosdmXuserdirlgpsOO3doc Specification No.: GPS-003 1 Page e of 11 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) TABLE OF CONTENTS 1.0 SCOPE ........... 3 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS .3 3.0 SYSTEM DESIGN ................................. 4 4.0 WATER TREATMENT ...............................................................4 5.0 TREATED WATER STORAGE TANK ............................... , . 5 8.0 WATER PRESSURE TANK. 5 7.0 POTABLEIUTILITY WATER DISTRIBUTION PUMPS .7 8.0 POTABLE WATER DISTRIBUTION SYSTEM .7 9.0 VALVES. 8 LIST OF TABLES Table I Reference Documents. 3 Table 2 World Health Organizational Guidelines for Drinking Water Quality ......9 R:\HENRS902\SAROSDM\USERDIR\GPS003.DOC Speeification No.: GPS-M3 Page 2 of 11 Rev. 1 30 oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) 1.0 SCOPE This Specification covers the functional requirements for temporary potable/utility water treatment, storage and distribution systems to be used by Contractor on the Work Site during the Work. 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS Table 1 lists the standards and specifications which shall be used with this Specification. TABLE 1. Reference Documents American Society of Mechanical Engineers (ASME) Standards Boiler and Pressure Vessel Code, Section Vill, Div. 1, Pressure Vessels American Society for Testing and Materials (ASTM) Standards B88 Seamless Copper Water Tube F441 Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe, Schedules 40 and 80 A53 Pipe, Steel, Black and Hot-Dipped, Zinc Coated, Welded and Seamless American Water Works Association (AWWA) Standards B300 Hypochlorites C508 Check Valves C651 Disinfection of Water Mains C652 Disinfection of Water Storage Facilities C653 Disinfection of Water Treatment Facilities C800 Water Service Pipe (Type K, Soft Copper Pipes) C900 PVC Pipe Sizes 100 mm to 300 mm C907 PVC Pressure Fittings for Water D100 Welded Steel Tanks for Water Storage E101 Vertical Turbine Pumps - Line Shaft and Submersible Types Miscellaneous Documents World Health Organization (1993) Guidelines for Drinking Water Quality, 2nd Edition. Volume 1. Recommendations. Geneva, Switzerland Standard Methods for the Examination of Water and Wastewater, Mary Ann H. Franson, Editor, American Public Health Association, 19th Edition, 1995. R:M.ENRs9o2\SAROSDM\usERDIR\GPS003DOC Specification No.: GPS-003 Page 3 of 11 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) 3.0 SYSTEM DESIGN 3.1 The components of the water storage and distribution system shall include, but not be limited to: a. Water supply lines from source wells to storage tank. b. Water storage tank. c. Water treatment equipment to provide the level of treatment necessary to comply with World Health Organization (WHO) Guidelines for Dinking Water Quality, local regulations and the requirements of this specification. WHO Drinking Water quality standards are listed in Table 2. d. Water distribution mains and branch service lines. 3.2 The water distribution system layout shall incorporate looped piping wherever possible. Valves shall be provided on all branch service lines and on the mains at intervals sufficient to minimize disruption of service to consumers in the event of maintenance shut downs or breaks in the mains. 3.3 The structural design of the mains must address live loads at all road crossings and other areas where heavy vehicles may cross them. 3.4 Potable water system flow and pressure requirements shall be as follows: a. Community residents per capita consumption: 360 3/d (95 gpd) b. Operating pressure range during peak hour demand: 350 to 550 kPag (50 to 80 psig) 4.0 WATER TREATMENT 4.1 Treatments such as chlorination, sedimentation, coagulation-flocculation, filtration, aeration and ion exchange process shall be provided by Contractor if necessary to maintain the minimum standards for maximum contaminant levels of inorganic compounds, organic compounds, organic pesticides and physical properties such as turbidity, color, total dissolved solids and odor as specified in this specification, local regulations, and WHO Guidelines for Drinking Water Quality, whichever are more strict. 4.2 The treatment unit shall consist of a complete chlorination system in accordance with AWWA C653. R:HiENR5S902SAROSNM\USERDIR\GPSOO3.DOC Specification No.: GPS.003 Page 4 of 11 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) 4.3 Chlorine shall be injected at a point which will provide a minimum contact time of 20 minutes to produce a free chlorine residual of 0.5 mg/I. 4.4 Lab equipment for standard water analysis shall be supplied as required by the applicable AWWA standards. Methods of analysis shall be as in Standard Methods for the Examination of Water and Wastewater (1995). 5.0 TREATED WATER STORAGE TANK 5.1 Tankage shall be used to store water for human consumption. 5.2 Materials for tank construction shall be as follows: a. Tank shall consist of steel plate construction with welded seams. b. Tank padding shall consist of asphalt impregnated fiberglass or oxidized asphalts, fiberglass, and selected mineral or organic fillers bonded together to form sheets. Material shall be dry, firm, non- tacky, and resistant to mild acids and alkalines. 5.3 Installation Testing and Disinfection Tank installation, testing and disinfection shall meet the following requirements: a. Erect tank on level foundation of appropriate design. b. Contractor shall water proof, if necessary, and thoroughly disinfect the ground storage tank and connecting lines with 50mg/i chlorine solution, in accordance with applicable Standard, before placing in operation. Valves in water lines being disinfected shall be opened and closed several times during the contact period. Following a contact period of 24 hours, heavily chlorinated water shall be flushed from the system with clean water. Disinfectant procedures require ESSO's approval. c. After refilling tank with potable water having chlorine content of not more than lmg/l, take samples and submit for bacteriological testing. If samples are not free from coliform organisms repeat disinfection until tests comply with local regulations and WHO Guidelines for Drinking Water Quality. R:\HENR5SO2\$AROSDONTUSERDIR\GPS003.DOC | Specification No.: GPS-003 Page 5 of 11 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) 6.0 WATER PRESSURE TANK 6.1 General Tank shall contain potable water and air for the purpose of maintaining adequate pressure within the distribution system. 6.2 Materials Materials for tank construction shall be as follows: a. Tank shall consist of steel plate construction with welded seams. b. Tank shall be designed, fabricated and tested in compliance with ASME Boiler and Pressure Vessel Code, Section Vill, Division 1 (unfired pressure vessels). Design pressure shall be 689 kPag (100 psig) working pressure minimum. 6.3 Controls Controls shall include combination pressure tank control for operating pumps and compressor to accurately and automatically maintain correct air to water rato in tank. Each pressure sensor set point shall be easily adjustable. 6.4 Installaton, Testing and Disinfection Tank installation and testing shall meet the following requirements: a. Erect tank on level foundation of appropriate design. b. After installing valves and piping, and before field painting, subject valves and piping to hydrostatic pressure test in accordance with construction standards. c. Disinfect pressure tank and connecting lines with 50 mg/l chlorine solution in accordance with AWWA C652 and local requirements before placing in operation. d. Following contact period of not less than 24 hours, flush heavily chlorinated water from system with clean water until residual chlorine content is not greater than 1mg/l. Sample water and if samples are not free of coliform organisms, repeat disinfection until WHO Guidelines for Drinking Water Quality are satisfied. R:\HENRS9o2\SAROsDMWUSERDIR\GPS003DOC r Specification No.: GPS-003 Page 6 of 11 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) 7.0 POTABLEIUTILITY WATER DISTRIBUTION PUMPS 7.1 The pumps shall be electric motor driven, automatically controlled by system demands and pressures or by remote control and be capable of satisfying the peak hour water demand. The pump system shall be pressure controlled based on the pressure downstream of the pumps. Check valves shall be provided downstream of the distribution pumps to prevent backfiow. 7.2 A jockey pump shall be provided to maintain system pressure during low demand conditions with excess pressure relieved back into the storage reservoir. 7.3 The electrical power will be provided by Contractor. 8.0 POTABLE WATER DISTRIBUTION SYSTEM 8.1 General Provisions for this Section apply to a temporary potable water distribution system. Contractor shall comply with pipe manufacturer installation instructions, manuals, and printed recommendations. 8.2 Piping Material and Installation Piping material shall be as follows: e 12 mm to 25 mm (Y2 inch to 1 inch) NPS: Type L copper, per ASTM B88 * 38 mm to 76 mm (1/2 inch to 3 inch) NPS: SCH 80 CPVC per ASTM F441 * 100 mm (4 inch) and larger STD, seamless, ASTM A53 GRB. Galvanized steel pipe shall be protected against extemal corrosion. Cathodic protection shall be provided as necessary. Underground installation and testing by Contractor shall be sanitary, workman like and safely done in accordance with local and AWWA standards: a. Keep pipe clean during laying operations by plugging or other approved method. Do not lay pipe when it is raining or when trench is muddy, soft, or contains standing water. R:\HENR5902\5AROSOMUSERDIR\GPS003.DOC | Specification No.: GPS-003 Page 7 of 11 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) b. Do not lay water pipe closer than 3 meters (10 ft.) horizontally from sanitary sewer in parallel installations. Do not locate joints at cross- overs closer to sanitary sewer than 3 meters (10 ft.) from cross-over point. In either case, water pipe shall be above the elevation of adjacent sewer. 8.3 Pressure Testing a. Subject newly laid piping or valved section to hydrostatic pressure test. b. Carefully examine exposed pipe, joints, fittings, and/or valves during pressure test. Tighten or remake joints showing visible leakage. Replace and retest cracked or defective pipe, fittings and valves. 8.4 Disinfection System disinfection shall be performed as follows: a. After testing, disinfect entire distribution system with 50mg/I chlorine solution in compliance with AWWA requirements. Isolate a maximum length of 300 meters (or 1000 ft.) of piping from the rest of the system for disinfection. Thoroughly flush lines before introducing chlorine solution. Disinfectant procedures shall require ESSO's approval. b. After a contact period of not less than 24 hours, flush system with clean water until residual chlorine content is not greater than I mg/I. Open and close all valves in lines being sterilized several times during contact period. c. Collect samples for bacteriological analysis to check efficiency of disinfection procedures. Take minimum on one sample for each 300 meters (or 1000 ft.) of completed water main. Repeat disinfection process and sample collection if tests show that contamination persists. 9.0 VALVES 9.1 Distribution Valves In-ground valves shall be located in a valve box accessible to the operator for operation and maintenance. 9.2 Pressure Reducing Valves Pressure reducing valves shall maintain a constant downstream pressure regardless of varying inlet pressure. R-\HENRs902\SAROSDM\USERDIR\GPSo03.DoC Specification No.: GPS-003 Page 8 of 11 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR POTAB3LE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) TABLE 2 World Health Organization Guidelines for Drinking Water Quality Parameters Design Standard Turbidity 5 NTU Note - (a) (b) Color 15 time Color units Note - (b) Odor Inoffensive odor, 3 T.O.N. (d) Note - (b) pH 6.5 - 8.5 Chlorines 5 mgtL, 0.6-1 mg/L Note - (b) Monochloramine 3 mglL Total Dissolved Solids 1000 mg/L Note - (b) Total Coliform 0 per 100 mI Note - (c) Hydrogen Sulfide (H2S) 0.05 mg/L Note - (b) Inorganics Aluminum (Al Total) 0.2 mg/L Note - (b) Ammonium (NH4) 1.5mg/L Note- (b) Antimony (Mn) Arsenic (As) 0.01 mg/L Barium (Ba) 0.7 mg/L Boron (B) 0.3 mg/L Cadmium (Cd) 0.0 mgL Chlorides (Cl) 250 mgtL Note - (b) Chromium (total) 0.05 mg/L Copper (Cu) 2 0g/L, 1 mg/L Note - (b) Cyanides (CN) 0.07 mg/L Fluoride (F) 1.5 mg/L Iron (Fe) 0.3 mg/L Note - (b) Lead (Pb) 0.01 mgQL Manganese (Mn) 0.3 mg/L, 0.1 mg/L Note - (b) Mercury (Hg) 0.001 mg/L. Molybdenum (Mo) 0.07 mg/L Nickel (Ni) 0.2 mglL Nitrates (NO3) 50 mg/L Nitrites (NO2) .3 mgL- Selenium 0.01 mg/L- Sodium (Na) 200 mg/L Note - (b) Sulphates (S04) 250 mglL Note - (b) Zinc (Zn2 5 mg/L. 3 mg4 L Note - (b) Aromatic Compounds Bnee0.01 rng/L Ethylbenzene 0.3 rnglL, 2-200 1lg/L Note - (b) Toluene 0.7 mg/L, 24-170 pg/L Note - (b) Xylene o.S mglL, 20-1 800 1gq/L Note - (b) Styrene 20 gg/L, 4-2600 ,gglL Note - (b) Benzo[a)pyrene 0.7 pg/L L Chlorinated Alkanes R:\HENRs59o2NsAROSDN?xUSERDIR\GPSOM3DOC Specification No.: GPS-003 Page 9 of 11 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) TABLE 2 World Health Organization Guidelines for Drinking Water Quality Parameters Design Standard Carbon Tetrachloride 2 figlL Dichloromethane 20 jgIL 1,2 - Dichloroethane 30 ig/L 1, 1, I - Trichloroethane 2000 l±g/L Chlorinated Ethenes Vinyl Chloride 5 igIL 1,1 - Dichloroethene 30 Ig/L 1,2 - Dichloroethene 50 pIL Trichloroethene 70 IgL Tetrachloroethane 40 iggL Chlorinated Benzenes Monochlorobenzene 300 ,gIL, 10 - 120 pg/L Note - (b) 1,2 - Dichlorobenzene 1000 ggA, 1 -10 lig/L Note - (b) 1,4 - Dichlorobenzene 300 pig/L 0.3 - 30 lig/L Note - (b) Trichlorobenzenes (Total) 20 gg/L. 5 - 50 .g/L Note - (b) Disinfectant By-Products Bromate 25 pg/L Chlorite 200 pg/L 2-Chlorophenol 0.1 -10 glL Note - (b) 2,4-Dichlorophenol 0.3-40 .ig/L Note - (b) 2,4,6 - Trichlorophenot 200 pgIL, 2-300 ±g/L Note - (b) Formaldehyde 900 p.gIL Bromoform 100 jiglL Dibromochloromethane 100 gg/L Bromodichloromethane 60 pg/L Chloroform 200 gg/L Dichloroacetic Acid 50 pg/L Trichloroacetic Acid 100 tLg/L Chloral Hydrate (Trichloroacetaldehyde) 10 Ag/L Pesticides AJachlor 20 E2/L Aldicarb IO gg/L Aldrin/Dieldrin 0.03 1Lg& Atrazine 2 1Lg& Bentazone 30 gg/L Carbofuran 5 rg/L Chlordane 0.2 ag/L Chtorotoluron 30 4_glL DDT 2 _g_L R:.,HENR5s9O2\SAROSDM\USERDIRIGPSOO3.DOC Specification No.: GPS-003 | Page iO cf 11 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION (TEMPORARY) TABLE 2 World Health Organization Guidelines for Drinking Water Quality Parameters Design Standard 1,2-Dibromo-3-Chloropropane I pg/L 2,4-D 30 1g/L 1.2-Dichloropropane 20 lg/L 1,3-Dichloropropene 20 ng/L Heptachlor and Heptachlor 0.03 pg/L Hexachlorobenzene I gfL Isoproturon 9 4ig/L Lindane 2 jg/L MCPA 2 xg/L Methoxychlor 20 Lg/L Metolachlor 10 xg/L Molinate 6 1ig/L Pendimethalin 20 ggIL Pentachlorophenol 9 4g/L Permethrin 20 Ig/L Propanil 20 ig/L Pyridate. 100 igIL Simazine 2 lig/L Trifluralin 20 pg/L Chlorophenoxy Herbicides Other than 2,4- 90 Fg/L D and MCPA 2,4-DB Dichlorprop 100 1.g/L Fenoprop 9 gg/L Mecoprop 10 .g/L. 2,4,5-T 9 ig/L Miscellaneous Di(2-ethlhexyl)adipate 80 ±g/L Di(2-ethylhexy)phthalate 8 ±g/L Acrylamide 0.5 4gfL Epichlorohydrin 0.4 ,ugIL Hexachlorobutadiene 0.6 pg/L Edetic Acid (EDTA) 200 Mig/L Nitrilotriacetic Acid 200 ±gIL Tributyltin Oxides 2 ig/L Notes: a. NTU = Nephelometric Turbidity Units. b. The range given (or second value listed) shows preferred aesthetically-based values. c. No more than 5% of the samples per month may be positive. If less than 90 samples, no more than one can be positive. d. Threshold Odor Number. R:U\ENR5902SAROSDMVUSERDIRIGPS003.DOC | Specification No.: GPS-003 Page 11 of 11 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT GENERAL PROJECT SPECIFICATION FOR PACKAGED SEWAGE TREATMENT SYSTEM (TEMPORARY) GPS-004 Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By 0 19 Nov 96 7 EHW/CKO CKO DJS Issued for Proposals . ' 7 MEF DJS Issued for EMP R:'JoboS285\sarosdm\userdir\gps-O004.doc Specification No.: GPS-004 Pa!E e of 8 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PACKAGED SEWAGE TREATMENT SYSTEM (TEMPORARY) TABLE OF CONTENTS LIST OF TABLES .............. 2 1.0 SCOPE ..................... 3 2.0. DESIGN .................................................................................3 3.0 ELECTRICAL SYSTEM .................4 4.0 MECHANICAL .........................................................................4 5.0 PIPING .............. 5 6.0 INSTRUMENTATION. ...................................................................5 7.0 UNIT PROCESSES .......................... 5 8.0 UNIT PROCESS SPECIFICATIONS ............................ 6 9.0 NOISE ................................ 7 10.0 START-UP AND OPERATING INSTRUCTIONS. 7 11.0 GUARANTEE ................................................................................8 LIST OF TABLES TABLE I WORLD BANK LIQUID EFFLUENT CRITERIA. 3 R:Mobo5285\sarosdm\userdir,gps-O04.doc Specification No.: GPS-004 Page2of8 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PACKAGED SEWAGE TREATMENT SYSTEM (TEMPORARY) 1.0 SCOPE This Specification covers the functional requirements of a factory built, skid mounted, transportable, wastewater treatment unit(s) which will be used for the treatment of sanitary waste during the Work. 2.0. DESIGN 2.1 Effluent shall meet World Bank effluent guidelines for onshore oil and gas development. Table 1 highlights key World Bank effluent criteria. Table 1 World Bank Uquid Effluent Criteria(') Parameter Maximum Levels pH 6-9 BODs 50 mg/L Oil and Grease 20 mg/L Heavy Metals, Total (except Barium) 10 mg/L Phenolic Compounds 100 mg/L Total Suspended Solids 50 mg/iL Coliform Bacteria 400 MPN/I 00 mL (2) (MPN - Most Probable Number) Temperature - at the edge of the mKing zone Max. 50 C above ambient temperature of receiving waters - Max 30 C if receiving waters > 280 C. Source: The World Bank Environment, Health and Safety, Guidelines, Onshore Oil and Gas Development (World Bank, 1995) (1) Maximum daily discharge limits (2) Average monthly concentration (i.e., 30 consecutive days of sampling) 2.2 Skid mounted components may be designed for modular assembly and shall be shipped complete with all equipment specified herein. 2.3 Major equipment shall be of proven design with a minimum of 2 years of successful operation in equal to or more severe than design operating conditions. R:'obo5285\sarosdm\userdir\gps-004.doc , Specification No.: GPS-004 Page3Of8 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PACKAGED SEWAGE TREATMENT SYSTEM (TEMPORARY) 2.4 The treatment system shall be hydrostatically tested per goveming code. 2.5 The treatment system shall be suitable for outdoor installation operation in a tropical climate. 2.6 The system shall include provisions for ensuring that effluent criteria are met during periods of system start-up and upsets. 2.7 Discharge will be to perennial surface waters, or to an absorption/evaporation system and will be performned in a manner that avoids soil erosion. 3.0 ELECTRICAL SYSTEM The treatment system shall be completely prewired at the supplier's factory and shall be in accordance with International Electrotechnical Committee (IEC) Standards. Electrical enclosures shall be IP66. 4.0 MECHANICAL 4.1 Pumps shall be suitable for use in domestic wastewater application. Selection of the pump shall be based on its intended service. 4.2 The motors shall be designed per IEC standards. 4.3 Vessels shall be sized for the volume or holding time required for the proper operation of the system. Materials shall be compatible with sanitary sewage. Vessels shall be designed and constructed to conformr with API 650. 4.4 Supplier's standard materials are acceptable provided they are consistent with standards accepted and used by the industry. 4.5 Torque ratings for the drives shall be based on standard design criteria accepted and used in the gear industry. 4.6 Machinery shall operate under all conditions without excessive vibration. 4.7 All grease fittings, oil fills, and drain points should be extended for easy access and service from walkways or operating plafforms without raising floor plates. R:\1obo5285\sarosdm\userdir\gps-004.doc | Specification No.: GPS-004 Page 4 of 8 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PACKAGED SEWAGE TREATMENT SYSTEM (TEMPORARY) 5.0 PIPING 5.1 Piping shall be arranged in a way that prevents formation of liquid pockets or vapor traps. Block valves shall be provided to isolate principal skid termination points for inspection and maintenance. Butterfly valves shall not be used where positive shut-off is required. Piping and fittings shall be located in the confines of the skid and supported in such a way as to avoid unacceptable vibration, stresses or loads on equipment. Sufficient 19 mm (3/4 inch) vents and drains with corrosion resistant plugs shall be provided for hydrostatic testing and purging prior to start-up. Sampling ports between processes and at the effluent discharge should be provided. 5.2 Piping shall be per supplier's standard practice provided that it meets the conditions of 5.1, and provided that it is consistent with standards accepted and used by the industry. 6.0 INSTRUMENTATION Vendor shall provide all necessary instrumentation for operation and testing of the system. All instrumentation and associated junction boxes shall be rated for IP66. The system shall have an overload alarm and control system. 7.0 UNIT PROCESSES The unit processes shall consist of, but not be limited to: * A coarse screen * A comminutorigrinder * Biological activated sludge, suspended growth, complete mix unit process, with contact stabilization or extended aerafion * Settling basin * Sludge wasting system * Chlorine contactor RA\obo5285\sarosdm\userdir\gps-004.doc I Specification No.: GPS-004 Paqe 5 of 8 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PACKAGED SEWAGE TREATMENT SYSTEM (TEMPORARY) 8.0 UNIT PROCESS SPECIFICATIONS 8.1 Biological Treatment Unit The biological treatment unit shall be an activated sludge, suspended growth process with the following design basis: * The wastewater consists of liquid sanitary waste originating from the kitchen sinks, lavatores, showers, urnals and toilets. * Flow shall be based on 360 liters (95 gallons) of wastewater generated per person, per day, assigned to the camp. * The design shall be based on a mean cell residence time of not less than 5 days. * Mixed liquid volatile suspended solids (MLVSS) are 1500 mg/I and mixed liquor suspended solids (MLSS) are 1600 mg/I. * Influent BOD5 shall be 300 mgA (30 day avg.). * Minimum air requirements are 1.1 Kg air/Kg BOD5 removed. Average dissolved oxygen (DO) concentration of 2.0 mg/I shall be maintained. The air distibution system shall be designed to evenly distribute air over the entire length of the aeration tank. Each assembly shall be designed and installed so as to be removable for cleaning without disturbing the operation of the plant 8.2 Secondary Clarification The Clarifier/Thickener shall be Supplier's standard design provided that it is consistent with standards accepted and used by the industry. The Clarifier! Thickener shall be fabricated, assembled, and tested at the supplier's factory to the maximum extent feasible. The system shall be complete with all structural supports, controls, instrumentation, piping, wiring, and components mounted. Equipment and piping shall be arranged so that when installed, all external and intemal components requiring manipulation, observation, and maintenance shall be readily accessible and safe to operating and maintenance personnel. The secondary clarifier shall be based on the following design criteria: * Overflow rate shall not exceed 24 03/m2-d * Minimum tank depth shall be 3m. Plan dimensions of the tank shall be minimized. R:Mobo5285\sarosdmXuserdrgps-004.doc Specification No.: GPS-004 Pace 6 of 8 Rev. I | 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PACKAGED SEWAGE TREATMENT SYSTEM (TEMPORARY) * Sludge Volume Index equals 150 * Solids loading rate shall not exceed 6 Kg/m2-hr 8.3 Sludge Wasting System Supplier shall provide a method for wasting and dewatering excess sludge from the Clarfier underflow. Water from the dewatering process shall be retumed to the biological treatment unit. Dewatered sludge will be landfilled or landspread into suitable soil or may be incinerated. 8.4 Return Activated Sludge (RAS) Supplier shall provide a system for retuming activated sludge from the Clarifier underflow to the biological treatment unit. 8.5 Chlorination Supplier shall provide a disinfection tank with baffles to prevent short circuffing. The chlonne tank shall have sufficient capacity for the process condition. The chlorinator should dispense a predetermined and stable quantity of chlorine (preferably in tablet form). The chlorinator shall be designed to assure g'ood contact with the water and to permit the free flow of water through the unit. Chlorine shall be injected at a rate of 2 to 5 mg/L at a point which will provide a minimum contact time of 30 minutes prior to discharge. 8.6 Walkways The treatment plant shall be equipped with walkways, steps, ladders and handrails meeting governing standards. 9.0 NOISE The system noise shall not exceed 85 dBA at 1 meter. 10.0 START-UP AND OPERATING INSTRUCTIONS The supplier shall provide detailed operating and installation instructions. If appropriate, a trained representative will be provided to perform initial plant start-up and to assist Contractor in the operation and maintenance of the plant. R:Mobo5285\sarosdm\userdir\gps-004.doc Specification No.: GPS-004 Pae 7 of 8 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PACKAGED SEWAGE TREATMENT SYSTEM (TEMPORARY) 11.0 GUARANTEE Contractor shall guarantee that the system provided meets the requirements of the World Bank effluent quality and functional performance of this specification. Contractor shall immediately correct any deficiencies in the equipment or its performance. R:\IoboS285\sarosdm\userdir\gps-004.doc X Specification No.: GPS-004 Page 8 of 8 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT GENERAL PROJECT SPECIFICATION FOR WATER WELLS (TEMPORARY) GPS-005 Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages B B y By 0 19 Nov 96 5 FRE/CKO CKO DJS Issued for Proposals 1 3^ 'i 41 5 MEF DJS Issued for EMP R:\LOB05285\SAROSDM\USERDIR\GPS-OOD5OC | Specification No.: GPS-005 l Page e of 5 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WATER WELLS (TEMPORARY) TABLE OF CONTENTS 1.0 SCOPE. 3 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS. 3 3.0 GROUND WATER SUPPLY AND WELLS. 3 4.0 PUMP CONTROL. 4 5.0 WELL PUMPS AND MOTORS .......................... 5 6.0 WATER WELL ABANDONMENT .......................... 5 LIST OF TABLES TABLE 1 Reference Documents ..3 R:\Lo0o52ss\sAROSDNMUSERDIR\GPS-oosDOC | Specification No.: GPS-05 i Page 2 of 5 Rev. 1 2-9Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WATER WELLS (TEMPORARY) 1.0 SCOPE 1.1 This specification covers the functional requirements for the design of temporary potable/utility water supply from ground water wells. These wells will be used to supply water for Contractor's needs during the Work. Upon site abandonment, wells will be closed per section 6.0 of this document unless otherwise directed by Esso. 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS 2.1 Table 1 lists the standards which shall be used with this specification. TABLE 1. Reference Documents American Water Works Association (AWWA) Standards AIOO Wells C200 Steel Pipe (over 150 mm) C508 Check Valves C654 Disinfection of Wells C900 PVC Pipes (100 mm to 300 mm) E101 Vertical Turbine Pumps - Une Shaft and Submersible Types 3.0 GROUND WATER SUPPLY AND WELLS 3.1 Water supply source shall be from an underground aquifer. The following shall be taken into account during design: a. An approved hydrogeologist shall be retained to advise on well location, spacing, design and construction. The wells shall comply with AWWA A100. b. Wells shall be located to avoid sources of surface or subsurface pollution and/or flooding. c. Number of wells, size and depth of borings, gravel packs, screen sizes, well casings, sizes, number and capacity of multistage submersible pumps and electric motors, and size of discharge piping and other necessary components shall be designed to meet the required discharge pressures and flows. d. Spacing of wells shall be such that the drawdown curves do not overlap for any adjacent wells. R:Uobo5285)sarosdm\userdir\gps-005.doc I Specification No.: GPS-005 Page 3 of 5 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WATER WELLS (TEMPORARY) e. Wells shall located and completed in a manner that prevents interference with public water supply wells. f. The well design shall ensure that the screen section is always fully submerged and that any fluctuatons in the elevation of the water level in the saturated zone have been taken into account. g. Well seals shall be installed to prevent ground water contamination from the surface. The annular space between the casing and the drill hole shall be sealed using cementitious grout h. Well casing material shall be selected to suit the site conditions. - i. A stainless steel well screen shall be used. Well development shall be conducted to prevent intrusion of sand into the well bore (gravel pack may be needed). Pump testing, chemical and bacteriological testing of water samples shall be conducted. j. The well shall be cleaned to remove fine sand and debris and disinfected prior to use for potable water production. Potable water must comply with World Health Organization Standards as per GPS-003. k. A sampling point for each well shall be provided at a suitable location for taking samples for water quality monitoring. 1. Either a piezometer, an electric resistance tape or a water level measuring air line shall be installed and calibrated to permit monitoring of ground water levels. m. On completion of the work on water wells and prior to design of water treatment, the following shall be reported: * Log of well drilling. * As-built drawings of wells, well pumps and other details. * Results of chemical and bacteriological tests on water samples. * Verification of water treatment requirements originally planned. 4.0 PUMP CONTROL 4.1 The system design shall incorporate the automatic operation of up to two well pumps. Each well pump shall start or stop as controlled by the storage water levels in the potable/utility water reservoir reaching pre-determined elevation set points or by the hydropneumatic tank pressure reaching pre-determined set points. R:\Iobo5285\sarosdm\userdir\gps-OO5.doc pecification No.: GPS-005 Pag 4 of5 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WATER WELLS (TEMPORARY) 4.2 Any additional well pumps shall be manually controlled. 5.0 WELL PUMPS AND MOTORS 5.1 Multi-stage submersible well pumps shall comply wfith AWWA E101. 5.2 Check valves shall be installed in pump discharge pipes. 5.3 Well pump motors shall comply with IEC and shall be stainless steel. 5.4 Power shall be provided to operate all elements of this system. 6.0 WATER WELL ABANDONMENT To plug and abandon a water well, a cement plug shall be placed across and 10 m (32.8 feet) above the producing zone. A surface plug shall also be set from the surface to a depth of 20 m (65.6 feet). The pipe shall then be cut off one meter below grade and capped. The surface shall be restored to original contours. R:Mobo5285\sarosdm\userdir\gps-005.doc Specification No.: GPS-005 Page S of 5 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT GENERAL PROJECT SPECIFICATION FOR WASTE INCINERATOR (TEMPORARY) GPS-006 Rev. Date No. of Prepared Reviewed Approved Revision Details No. Paes BY BY 0 19 Nov 96 6 FRE CKO DJS Issued for Proposals 1 R.:' i't.- 51 6 MEF DJS Issued for EMP R:Uobo5285\sarosdmXuserdirAgps.008.doc Specification No.: GPS-006 Page I of 6 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE INCINERATOR (TEMPORARY) TABLE OF CONTENTS 1.0 SCOPE ..........................................3 2.0 DOCUMENTATION ........................................3 3.0 DESIGN/CONSTRUCTION FEATURES .......................................... 4 4.0 MATERIALS ..........................................6 5.0 INSPECTION AND TESTING ...................6 6.0 INSTALLATION ...................6 7.0 PERFORMANCE .. 6. LIST OF TABLES TABLE I WASTE CLASSIFICATION .4 R:\obo5285\sarosdm\userdir\gps-006.doc Specification No.: GPS-006 Pa e20f6 Rev. 1 O29ct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE INCINERATOR (TEMPORARY) 1.0 SCOPE 1.1 This specification covers the functional requirements for a temporary Waste Incinerator system to be used by Contractor on the Work Site during the Work and removed upon completion of the Work. 1.2 The system will be located outdoors near an active Work Site. The system shall be capable of safely incinerating industrial waste, medical waste and municipal waste. The system shall provide (with proper maintenance) reliable operation on a periodic or continuous basis, as necessary. 1.3 The system shall be a complete package of the supplier's standard design suitable for the application as described in this specification. This package may include, but not necessarily be limited to, the following items: - Primary and secondary combustion chambers - Blowers, drivers, coupling, guards, ducts and equipment shelter - Rotary kiln, shakers, trays or containers for solids or sludges - Built-in stack - Refractory lining - Fuel handling equipment - Ash removal equipment * Bumer management controls system * Pollution control equipment, as required * Waste loading system * Start-up and commissioning of the system 2.0 DOCUMENTATION Contractor shall supply drawings and data in sufficient detail to describe all systems (including accessories), as well as operating and safety procedures and practices. This information shall be included in Contractor's Waste Management Plan required by Coordination Procedure Section 30 - Environmental Management. R-iobo5285\sarosdm\userdirps.OO6.doc i Specification No.: GPS-006 Page 3 of 6 Rev. I 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE INCINERATOR (TEMPORARY) 3.0 DESIGNICONSTRUCTION FEATURES 3.1 Waste Classification The classification of potential wastes to be incinerated shall be as per the following table. Table I Waste Classification Waste Descripfion Typical Analysis Moisture Density Heat Type wt % kg/rr? Content kJ/kg 0 Dry industrial & Cardboard, dry paper, 10 5 8500 commercial rubbish wooden pallets, floor sweepings, plastic bags 1 General industrial Cardboard, paper, floor 25 10 6500 commercial & domestic sweepings, up to 20% rubbish itchen waste 2 Refuse Kitchen & domestc S0 15 4300 wastes, wet paper, iloor sweepings, garden waste 3 Pathological materials Hospital dressing, 10 to 30 5 to 15 4500 to disposable bedding, 8000 gowns, etc. 4 Pathological remains Dead animals, human 85 25 to 75 1000 tissue, etc. 5 IndustWial wastes/oil Industrial process wastes - 850 to 960 40,000 sludge 6 Semi-solid and solid Combustibles requiring Variable Variable wastes hearth, retort, or grate according according burning equipment to waste to waste sutvey survey Note: Waste classification based on Handbook of Industrial Waste Disposal, Tables 9-1 & 9-3. 3.2 Design Basis The design basis, waste production rate, required incinerator capacity, and fuels supplied shall be specified by the Contractor to satisfy its needs. R-.\loto5285\sarosdm\userditAgps.OO6.doc Specification No.: GPS-006 Page 4 of 6 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE INCINERATOR (TEMPORARY) 3.3 Refractories a. All refractory design and material shall be suitable for this service. b. The calculated cold face temperature of the exterior surface of the casing shall not be more than 820C (1800F) based on a design maximum ambient temperature of 42°C (108 IF). 3.4 Waste Loading and Ash Removal Facilities Contractor shall provide a system with related facilities to ensure the operation can be carried out efficiently and safely. 3.5 Bumer and lgnition System a. Contractor shall provide only proven designs. b. Blowers and motors shall be provided with extemal lubricafion. 3.6 Instrumentation and Controls a. Contractor shall have the incinerator supplier provide the control system completely coordinated, constructed, wired and checked out at the factory. b. All control devices and instruments and associated junction boxes shall be rated for IP66. 3.7 Noise Requirements The incinerator contribution to sound level shall not exceed 85 dBA at 1 meter. 3.8 Emission Requirements The air quality standards of the Environmental Impact Mitigation Specification shall be met. R\Iobo528S\sarosdm\userdir\gps.006.doc Specification No.: GPS-006 Paae5of6 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE INCINERATOR (TEMPORARY) 4.0 MATERIALS The materials and components shall be the supplier's standards provided that those standards are consistent with industry practice, that they are suitable for the process and use in tropical and outdoor environments and have been proven successful in similar services. 5.0 INSPECTION AND TESTING Contractor shall fumish ESSO with copies of all inspection and quality control documents. 6.0 INSTALLATION Once approved by ESSO, Contractor shall install the incinerator system described in Section 4, above to meet waste management needs as approved in Contractor's Waste Management Plan. After conclusion of the Work, Contractor shall remove the system. 7.0 PERFORMANCE 7.1 Contractor's system shall meet the requirements stated in this specification. It shall be the Contractor's responsibility to correct any deficiencies at a time agreeable to ESSO. 7.2 Contractor shall operate the incinerator system as needed until construction activities have been completed. Contractor shall incinerate its domestic, industrial and construction wastes as specified in Contractor's approved Waste Management Plan. R Vobo528S\sarosdmbuserdifgps-O6.doc | Specification No.: GPS-006 Page 6 of 6 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT 1-' BencbmhrL > GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL GPS-007 Rev. Date No. of Prepared Reviewed Approved | Revision Details No. Pages By BY By 0 19 Nov 96 37 EHWICKO CKO DJS Issued for Proposals i; t -- .t 1 37 MEF DJS Issued for EMP R:\henrS902Xsarosdm\userdir\gps-007.doc Specification No.: GPS-007 Page 1 of 36 Rev. I 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL TABLE OF CONTENTS 1.0 SCOPE ....................................... 3 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS ................. ...................... 3 3.0 PURPOSE OF SOLID WASTE LANDFILL ....................................... 4 4.0 SITE SELECTION ....................................... 4 4.1 Initial Selection Criteria ....................................... 4 4.2 Final Selection ......................................... 5 5.0 DESIGN AND CONSTRUCTION CRITERIA ....................................... 5 5.1 Site Preparation and Access Roads ..................................................................5 5.2 Perimeter Dike and Outer Storm Water Ditch ..................................... 10 5.3 Landfill Area and Excavation ..................................... 10 5.4 Side Slope of Landfill and Berm Sides ..................................... 11 5.5 Composite Liner ..................................... 11 5.6 High Permeability Sand Layer for Drainage ................ ..................... 13 5.7 Leachate Collection System ............................... 13 5.8 Run-On and Run-Off Control ............................... 14 5.9 Preparation of Landfill Cells ............................... 15 5.10 Gas Venfing System ............................... 14 5.11 Soils and Liner Quality Control Plan ............................... 16 5.12 Soil and Uner Testing ............................... 16 5.13 Soils and Liner Evaluation Report (SLER) and Flexible Membrane Liner Evaluation Report (FMLER) ............................... 19 5.14 Groundwater Monitoring Systems ............................... 20 5.15 Monitoring Wells ............................... 21 6.0 OPERATING PROCEDURES ............................... 26 6.1 Health And Safety ............................... 27 6.2 Placement of Solid Waste Material ............................... 27 6.3 Daily and Intermediate Cover ............................... 28 6.4 Leachate Collection and Disposal ............................... 28 6.5 Groundwater Monitoring ............................... 29 6.6 Records ............................... 34 7.0 CLOSURE REQUIREMENTS ............................... 35 LIST OF TABLES Table 1. Additional Requirements ............................... 3 Table 2. Cover Material Gradation ................................ 1 Table 3. Depth of Cover Material ............................... 29 Table 4. Sample Analysis Parameters .................................. 32 R:\HENR5902\SAROSDMuserdi,igps-O7.doc Specification No.: GPS-007 Page 2 of 36 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOUD WASTE LANDFILL 1.0 SCOPE This functional specification includes the technical requirements for the design, construction and operation of a landfill site to be used for solid waste disposal. The construction includes earthwork, access roads, and installation of a landfill with a composite liner and leachate collection system and monitoring wells. The operation includes maintaining each landfill cell, collecting leachate and monitoring leachate and monitor-well water quality during the life of the facility and the closure period. 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS The publications listed in Table 1 are incorporated by reference into this specification. Except as modified by the requirements specified herein, work covered by this specification shall conforn to the applicable provisions of these publications. Table I Specifications and Standards SPECIFICATIONS CCSIECS Chad Cameroon Specifications/Esso Chad Specifications CCS 21-20-107 Soil Erosion Mitigation Specification (Same as ECS 26-1-4) CCS 21-20-108 Environmental Impact Mitigation Specification (Same as ECS 26-1-5) GPS General Project Specifications 005 Water Wells (Temporary) 008 Project Safety Requirements 009 General Safeguards and Security Requirements 011 Waste Management CODES AND STANDARDS AASHTO American Association of State Highwav and Transportation Officials Guide for Design of Pavement Structures T88 Particle Size Analysis of Soils T89 Determining the Liquid Limit of Soil T90 Determining the Plastic Limit and Plasticity Index of Soils ASTM American Society of Testing and Materials C136 Sieve or Screen Analysis of Fine and Coarse Aggregate C478 Precast Reinforced Concrete Manhole Sections D422 Test Method for Particle - Size Analysis of Soils Dl 140 Test Method for Amount of Material in Soils Finer than the No. 200 (75S-m.) Mesh R:.-\ENR59O2\SAROSDM\userdir\gps-007.doc | Specification No.: GPS-007 Page3of 36 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL TABLE 1 (Cont'd.) CODES AND STANDARDS ASTM (Cont'd.) D1557 Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbIft3) (2700 kN-m/m3) D2216 Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock D3034 PSM Poly (Vinyl Chloride) PVC Sewer Pipe and Fittings (Perforated) D4253 Maximum Index Density and Unit Weight of Soils Using a Vibratory Table D4254 Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density D431 8 Test Method for Liquid Limit, Plastic Limit, and Plasticity Index of Soils D5084 Test Method for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Perrneameter D5093 Standard Test Method for Field Measurement of Infiltration Rate Using a Double-Ring Infiltrometer with a Sealed Inner Ring USCOE U. S. Arny Corps of Engineers EM 11102-1906 Corps of Engineers Manual PUBUCATIONS Standard Methods for the Examination of Water and Wastewater Mary Ann H. Franson, Editor, American Public Health Association, 19t Edition, 1995. 3.0 PURPOSE OF SOLID WASTE LANDFILL The solid waste landfill shall be designed, constructed and operated to accept only solid wastes approved in Contractor's Waste Management Plan in accordance with Section 30 of the Coordination Procedure - Environmental Management and GPS-01 1, Waste Management. 4.0 SITE SELECTION 4.1 Initial Selection Criteria The criteria for the selection of landfills sites shall be as follows: a) Avoid residential areas, wetiand, critical wildlife habitats, drainage courses and areas subject to seasonal flooding. b) Sites shall not be chosen within the 100 year flood plain of a stream, river or lake. c) The landfill shall not be located within 500 m (1640 ft.) of an airfield. This restriction is imposed to reduce potential bird hazards to aviation. R:\HENR59O2\SAROSDMV¶userdir\gps.OO7.doc | Specification No.: GPS-007 Page 4 of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL d) The landfill must be at least 300 m (1,000 ft.) from any non-intermittent water course or other permanent water-body. e) The landfill shall not be constructed within 500 m (1640 ft.) radius of any water supply well. f) The landfill shall not be located within 60 m (200 ft.) of known geological fault areas. g) Avoid locations which have unstable subgrades and are likely to provide poor foundation conditions or are threatened by massive earth movements (e.g., landslides). h) The site shall have adequate room to accommodate the volume of wastes, berms, perimeter ditches, buffer zones, space for groundwater monitoring wells and access roads. i) On the basis of hydrogeological investigations, the site shall have a verfical separation between the seasonal high water table and the landfill bottom of greater than 1.5 m (5 ft.). j) The material that underlies the landfill shall have a hydraulic conductivity of not more than 106 cm/s. k) The site shall be located in an area where there will not be significant lateral transfer of mobilized contaminants in the groundwater. If significant groundwater flow rates are found, additional precautions shall be taken. I) The selected location shall be such that natural erosion or future land use will be unlikely to excavate or expose buried waste. 4.2 Final Selection After preliminary selection of alternative landfill sites by Contractor, detailed and site specific geotechnical, hydrological, hydrogeological and environmental investigations shall be carried out to select the most appropriate site. Final site location requires ESSO approval. 5.0 DESIGN AND CONSTRUCTION CRITERIA 5.1 Site Preparation and Access Roads 5.1.1 The area inside the operational-zone fence shall be cleared. Clearing shall include the removal of all trees, bushes, and other vegetation, to within 150 mm (6 in.) above the natural grade. It shall also include the removal of dense growths of ground cover, R:'HENR5902\SAROSDMtuserdir\gps-007.doc Specification No.: GPS-007 | Page S of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL matted dead vegetation, and rubbish resting on natural grade. Clearing shall also include the specified removal of any existing structures, foundations, buried service piping and conduits. 5.1.2 Areas to be excavated or areas that will have facilities installed over them shall be grubbed. Grubbing shall include the excavation and complete removal of tree stumps, also the excavation and removal of all other plant life including root structures, plus rubbish, to a depth not less than 150 mm (6 in) below natural grade. Other minimum grubbing depth criteria supplemental to the 150 mm (6 in) minimum depth below natural grade requirements for grubbing are as follows for the following specific Work areas: * Drainage ditches shall be grubbed to a depth not less than 300 mm (1 ft) beneath the finished sides and bottom. - Roadway areas shall be grubbed to a depth not less than 900 mm (3 ft) below finished grade but not less than 600 mm (2 ft) below natural grade. - Embankment slopes shall be grubbed to a depth not less than 300 mm (1 ft) beneath the finished slope. * Areas for piping between process unit area limits and ditches, and along roads, shall be grubbed to a depth not less than 600 mm (2 ft) below finished grade but not less than 150 mm (6 in) below natural grade. 5.1.3 All organic material from clearing and grubbing, including trees, stumps, roots, and brush shall be managed and disposed as specified in the Environmental Impact Mitigation specification. 5.1.4 Topsoil shall be stripped and stockpiled as indicated in the Soil Erosion Mitigation specification and the Environmental Impact Mitigation specification. Utilization of one or more altemate techniques (e.g. scarification, surface texturing, etc.) to control erosion and facilitate establishment of appropriate vegetation requires Esso approval. 5.1.5 Erosion control measures shall be implemented in accordance with the construction drawings and the Soil Erosion Mitigation specification. Mitigation measures specified in the Soil Erosion Mitigation specification shall be installed as soon as practical. R-.\HENR5902\SAROSDNTuserdirSgps-007.doc L Specification No.: GPS-007 Page 6 of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL The faces of cut and fill slopes, and soil surfaces subject to rain, wind, and runoff disturbance shall be protected against erosion unless they are not subject to erosion due to the erosion-resistant character of the material. 5.1.6 An all-weather, laterite road shall be provided to the landfill site. As a minimum, the access road shall be designed and constructed in accordance with the following: a.) The geometry of the access road shall be as follows: 1.) Max. gradient= 7% 2.) Min. stopping distance = 85 m 3.) Min. passing distance = 420 m 4.) Max. super elevation = 0.06 m/m 5.) Min. radius of curve = 130 m 6.) Min. crest, k = 15 m 7.) Min. sag, k = 20 m 8.) Posted speed = 40 km/h 9.) Design speed = 60 km/h 10.) One lane 5 meters wide b.) The recommendations of UMSHTO Guide for Design of Pavement Structures" shall be applied to establish the pavement thickness, which will consist, as a minimum, of two 15 cm (6 inches) layers of compacted latenc material as a base and subbase course. c.) Ditches and culverts shall be designed to convey runoff from a ten year frequency storm with no erosion to the roadway or prepared surface. Culverts shall be designed for a minimum loading of HS20 in accordance with ASSHTO. d.) Roadway signs shall be in accordance with intemational standards and symbols using metric units. Signs shall also satisfy any local requirements and shall be submitted to ESSO for approval before supply and installation. e.) The roadway embankment, which is the earthwork below subgrade, shall be compacted to 90% of Modified Dry Density (MDD) in accordance with ASTM D1557. Water content shall R:kHENRs902\sAROSDMTuserdirgps-007.dcoc | Specification No.: GPS-007 Paqe 7 of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON4HAZARDOUS SOLID WASTE LANDFILL be adjusted to ±3% of Optimum Water Content (OWC) before compaction. f.) Embankment fill material shall be free of organic material and roots and shall comply with the following requirements: 1.) Liquid limit not to exceed 60 2.) Plastic limit not to exceed 30 3.) CBR index at 4 days immersion to reach 10 g.) The subgrade is the top layer of the embankment which is below the subbase course. Where the design subgrade is in cut, the exposed surface of the natural ground shall be scarified to a minimum depth of 30 cm and recompacted in two layers to 95% of MDD. Water content shall be adjusted to ±3% of OWC before compaction. h.) The subbase course shall be placed on finished subgrade, to the design thickness, but not more than 15 cm (6 inches) per lift The base course shall be placed on finished subbase course, to design thickness, but not more than 15 cm (6 inches) per lift. The subbase and base course material shall be naturally occurring laterite, free of organic material and comply with the following requirements: 1. Liquidity limit not exceed 45 2. Plasticity index not to exceed 22 3. CBR index at 4 days immersion to reach 30 4. Coefficient of uniformity D60/D10>10 5. Largest particle not to exceed 60 mm 6. Comply with gradation: Sieve Opening Percent (mm) Passing 60 100 40 95 - 100 31.5 90- 100 20 75- 100 10 60 - 90 5 36 - 75 2 25 - 55 R:\HENR5902kSAROSDM\userdir\gps-007.doc Specification No.: GPS-007 Page 8 of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON4HAZARDOUS SOLID WASTE LANDFILL 0.5 18 -40 0.08 8-30 The subbase and base course shall be compacted to 95% MDD. i. The standard test methods listed in Table 1 shall be used to determine material characteristics. The following minimum requirements shall apply. A copy of all test reports shall be submitted to ESSO for review. Embankment fill Modified Proctor to ASTM D1557 every 3000 m3 or at changes of material. CBR at 90% MDD every 5000 m3 or at changes of material In situ density and water content every 500 m3 Finished subQrade (in fill and in cut) Modified Proctor to ASTM D1l557 every 500 m CBR at 95% MDD every 1000 m In situ density and water content every 250 m Level survey - along centerline and edges Subbase course Borrow pit invesfigations - classification of soils to AASHTO T 88, T 89 and T 90 every 500 m3 Modified Proctor to ASMT D1557 every 1000 m3 CBR at 95% MDD every 2000 m3 In situ density and water content every 250 m Level survey - along centerline Base course Borrow pit investigation - classification of soils to AASHTO T 88, T 89 and T 90 every 500 m3 Modified Proctor to ASMT D 1557 every 1000 m3 CBR at 95% MDD every 2000 m3 In situ density and water content every 100 m Level survey - along centerline and edges R:MHENR5902\SAROSDMQuserdirgps-007.doc | Specification No.: GPS-007 Page 9 of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL j. Seeding, grassing, np rap or other erosion control method shall be used along the roadside to prevent erosion of the draining ditches and damage to the access road. 5.1.7 The landfill site shall be accessible only when operation personnef are on duty. A chain link fence and gates shall be designed and constructed around the entire site in accordance with Coordination Procedure 25 - Safeguards and Security (S&S) at Work Sites. Gates shall include provisions for locking. 5.1.8 A minimum 30 m (100 ft) buffer zone is required between the perfmeter fence and the landfill. 5.2 Perimeter Dike and Outer Storm Water Ditch A perimeter dike shall enclose the proposed landfill site. The perimeter dike shall consist of a 6 meter (20 ft) wide buffer zone including a 3 meter (10 ft.) fire lane and a perimeter ditch to manage the storm water run-on. The finished elevation of the dike shall be set with due consideration to the thickness of compacted clay cap over each landfill cell after it has been completely filled and closed. 5.3 Landfill Area and Excavation 5.3.1 The total volume of wastes to be disposed during the life span of the landfill shall be based on the volume of acceptable solid waste generated by construction personnel and activities during construcbon as well as any volume requirements stated in the Design Basis Manual. Waste minimization shall be implemented, wherever feasible in order to keep the landfill area to a minimum. 5.3.2 All excavation material shall be processed and separated. Material meeting the grain size distribution indicated in Table 2 shall be retained and stockpiled for daily cover material. Those materials which are not needed for backfill or are unsuitable for daily cover shall be disposed of by the Contractor at a location approved by ESSO. R:\HENR5902\SAROSDNMtserdirigps.007.doc Specification No.: GPS-007 Pae 1e0of 36 Rev. 1. 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLUD WASTE LANDFILL Table 2 Cover Material Gradation SIEVE SIZE PERCENT PASSING 1 12 mm (0.5 in.) 100 5 mm (No. 4) 90-100 2 mm (No. 10) 45-80 0.08 mm (No. 200) 8-98 Clay (0.002 mm) 8-50 5.3.3 All excavations shall be kept free of standing water at all times. Dewatering equipment such as pumps and hoses shall be provided and operated by Contractor to remove water from excavated areas. 5.4 Side Slope of Landfill and Berm Sides Safe side slopes shall be constructed. A slope stability analysis shall be performed for both excavated side slopes and above-ground embankments to verify the structural integrity of a cut slope or berm. The design configuration shall be evaluated for its stability under all potential hydraulic and loading conditions. 5.5 Composite Liner 5.5.1 For purposes of this specification, "Composite Liner" means a system consisting of two components; the upper component must consist of a minimum 0.75 mm (30 mil) Flexible Membrane Liner (FML) and the lower component must consist of at least a 600 mm (2 ft) layer of compacted soil with a hydraulic conductivity of no more than 1X107 cm/sec (4x104 in/sec). FML components consisting of High Density Polyethylene (HDPE) shall be at least 1.5 mm (60mil) thick. The FML component must be installed in direct and uniform contact with the compacted soil component. The panel layout plan shall be made in advance so that travel of heavy equipment on the liner can be avoided. Vehicles shall not be R:\HENR5902\SARoSDM\userdiAgps-007.doc Specification No.: GPS-007 Page l1 of 36 Rev. I 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL allowed on completed liners. Seaming of panels shall be completed in accordance with manufacturer's recommendations. At least 600 mm (2 ft.) of protective soil cover shall be placed above the composite liner. 5.5.2 If groundwater is encountered in disposal excavations, or in cases where excavations extend below the seasonal high-water table, material with a weight equivalent to 300 mm (1 ft.) of compacted clay liner for every 600 mm (2 ft.) of static water head shall be used as a basis for the construction of a liner between the deposited solid waste and the groundwater. The total thickness of this liner shall consist of no less than 900 mm (3 ft.) of soil with a permeability coefficient of no more than 1x10-7 cm/sec (3.94 x 104 in/sec), a liquid limit of no less than 30, a plasticity index of no less than 15, and a percent passing Number 200 sieve of no less than 30. Pressure release systems may be used to reduce the amount of liner support required. 5.5.3 The subgrade for placement of the clay portion of the composite liner shall be compacted in accordance with the foliowing standards: * Cohesive soils - 95 percent of the Modified Maximum Proctor Dry Density (MMPDD) in accordance with ASTM DI 557. * Non-cohesive soils - 80 percent of relative density per ASTM D4253 and ASTM D4254. 5.5.4 Material for the clay portion of the composite liner shall be uniform with clods, rocks, and stones no larger than 25 mm (1 in.) and that total no more than 10% by weight. Disking and tilling of the material shall be performed as required to break up large clods. In all cases, soil clods shall be reduced to the smallest size necessary to achieve the coefficient of permeability reported by the testing laboratory and to destroy any macrostructure evidenced after the compaction of the clods under density-controlled conditions. Rock content shall not be a detriment to the integrity of the overlaying geomembrane. 5.5.5 The liner soil material shall be placed in lifts not exceeding 150 mm (6 in.). The surface of the previous lift shall be scarified before the next layer is added. Liner soil materal shall not be compacted with a bulldozer or any track-mobilized equipment unless it is used to R:U\ENR59O2\SAROSDrVuserdir\gps-007.doc Specification No.: GPS-007 Page 12 of 36 Rev.1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL pull a pad-footed or prong-footed roller. Each new lift shall be fully compacted to the previous lift to form a monolithic unit. The liner soil material shall be compacted to 97% of the MMPDD according to ASTM D1557. 5.5.6 Unless altemate construction procedures are approved in writing by ESSO, all constructed liners shall be keyed into an underlying formation of sufficient strength to ensure stability of the constructed lining. 5.6 High Permeability Sand Layer for Drainage A highly permeable sand layer shall be placed over the composite liner. The thickness of the layer shall be such that it provides a maximum of 300 mm (12 in.) of leachate head above the liner. The sand drainage layer shall have a minimum slope of 2%. This drainage layer serves two functions: * Drain the leachate away from the underside of the waste. - Protect the composite liner. 5.7 Leachate Collection System 5.7.1 The leachate collection system shall be designed to maintain less than 300 mm (12 in.) depth of leachate or "head" above the liner during the operafing life of the Jandfill and through the closure and post closure periods. 5.7.2 The leachate collection and removal systems shall be: . constructed of materials that are chemically resistant to the leachate expected to be generated, * built of sufficient strength and thickness to prevent collapse under the pressures exerted by overlaying wastes, waste cover materials, and by any equipment at the landfill, and . designed and operated to function through the scheduled closure period of the solid waste landfill. 5.7.3 The feachate collection system shall consist of a number of perforated pipes (as per ASTM D3034, if the criteria of 5.7.2 are R:-\ENR5902\AROSDMsuserdirdgps.007.doc L Specification No.: GPS-007 | Page 13 of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL satisfied), with protective filter wrapping material, laid into the sand drainage layer. 5.7.4 The leachate collection system shall be designed and installed with the following characteristics: a) A trench shall be provided for the perforated pipes with 150 mm (6 in.) depth of cover of sand over the pipe. b) The drain pipes shall have not less thani 2% slope. c) Size and horizontal spacing of the drain pipes shall be sufficient to control leachate levels to within the limits specified above. d) The perforated pipe shall be wrapped in a woven polyethylene fabric such as Nicolon #66339, manufactured by Nicolon B.V., or equal as approved by ESSO. e) Leachate collection lines that penetrate the liner shall have an antiseep collar. A minimum of 1.5 m (4.92 ft) of compacted clay shall be placed around the collar in all directions. f) Pipe materials shall be clean and free of defects when placed in trench. Contractor shall not allow heavy equipment to travel over the newly installed leachate pipe during construction. g) A collection sump shall be provided to capture leachates for treatment. h) The collection sump shall be sized to collect the maximum volume of leachate expected during a leachate monitoring period specified in the uOperating Procedures" Section 6.0 of this specification. i) The collection sump shall be a water-tight concrete structure with a water-tight, chemical resistant liner. 5.8 Run-On and Run-Off Control 5.8.1 Run-on control prevents rain water from flowing into the active portion of the landfill. Run-on control structures such as ditches, dikes and culverts shall be capable of preventing flow onto the active portion of the landfill during peak discharge from at least a 25 year storm. R:\HENR5902\SAROSDM\userdir\gps-007.doc Specification No.: GPS-007 Page 14f 36 Rev. I i 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL 5.8.2 Run-off control is the management of precipitation which falls on the landfill site so as to minimize the amount of rain water that gets in contact with waste or leachate. The run-off management system shall collect and control at least the water volume resulting from a 24 hour, 25 year storm. This shall be achieved in either of two ways: * Keeping the active landfill cells small and by providing adequate grading so that run-off is controlled and diverted from the working area. - Collecting and discharging run-off from the inactive portion of the landfill as storm water, thus reducing the overall leachate volume to be treated. 5.8.3 For erosion control, up-gradient and down-gradient ditches, berms, riprap, pavements or combinations thereof shall be used as necessary to achieve run-off and run-on control. 5-8.4 Collection and holding facilities (e.g. sumps or basins) associated with run-on or run-off control system shall be emptied or otherwise managed expeditiously after storms to maintain design capacity of the system. 5.9 Preparation of Landfill Cells One landfill cell shall be opened at a time. The bottom of the cell shall be sloped for drainage away from the waste material. A temporary berm of approximately 0.6 m to 0.9 m (2 ft. to 3 ft.) in width shall be installed for isolation from previous cells. 5.10 Gas Venting System A minimum of one passive gas vent shall be provided per cell to prevent the build-up of gas pressure beneath the cover. RA\HENR5902\SAROSDOMuserdi'gps-OO7doc ISpecification No.: GPS-007 I Page 15 of 36 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL 5.11 Soils and Liner Quality Control Plan Before landfill construction begins, Contractor shall have an ESSO approved Soils and Liner Quality Control Plan (SLQCP). The SLQCP must be included in the Site Development Plan to provide operating personnel adequate procedural guidance for assuring continuous compliance with groundwater protection requirements. The plan shall specify construction methods employing good engineering practices for compaction of clay soils to form a liner as well as the installation and testing of an FML. Quality control testing and reporting shall also be discussed. The SLQCP shall include the following information: * Proposed dewatering plans, where applicable. * Constructed liner details, where applicable shall be depicted on cross- sections of a typical trench showing the slope, widths, and thickness for compaction lifts. The amount of compaction shall be expressed as a percentage of a predetermined laboratory density. . Soil and liner quality control testing procedures, including sampling frequency. All field sampling and testing, both during construction and after completion, shall be performed by Contractor acting in compliance with the provisions of local govemment regulations and project environmental and quality control standards. 5.12 Soil and Liner Testing Soil liner quality control testing frequencies and procedures shall be in accordance with the following: 5.12.1 All field sampling and testing, both during construction and after completion of the lining, shall be performed by a qualified professional experienced in geotechnical engineering and/or engineering geology, or under his direct supervision. 5.12.2 All liners shall have continuous on-site inspection during construction by the Contractor. R:\HENRs902\SAROSDMUNserdirigps-0O7.doc Specification No.: GPS-007 Page 16 of 36 Rev. i 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON4HAZARDOUS SOLID WASTE LANDFILL 5.12.3 Clay liner density shall be expressed as a percentage of a maximum dry density based on a compaction test. The clay liner, after compaction, shall be proven by soils laboratory testing to provide a coefficient of permeability of lx107 cm/sec (3.94 x 10-O in/sec) or less. 5.12.4 The SLQCP shall define the frequency of testing for coefficient of permeability, sieve analysis, Atterberg -limits, density, moisture content and thickness verification. These frequencies shall be expressed in numbers of tests per specific area of liner per lift or specffic thickness of liner, unless an altemate frequency is approved by ESSO. 5.12.5 Unless otherwise approved by ESSO, all soil tests performed on any in-situ or constructed soil liners shall be in accordance with the following standards: a) Laboratory permeability tests shall be run using tap water or 0.05N solution of CaSO4 and not distilled water. All test data must be submitted on permeability tests regardless of test method used. At a minimum, the calculations of the last data set reported for each sample and the resultant coefficient of permeability shall be reported as supporting data. Tests shall be either constant head with back pressure (Appendix VIl of EM 1110-2-1906; or ASTM D5084) or falling head (Appendix VI) of EM 1110-2-1906). b) Sieve analysis with +1,200, to -200 sieves (ASTM 0422 or ASTM Dl 140, as applicable). c) Atterberg limits (ASTM D4318). d) Moisture-density relations (ASTM D1557). e) Moisture content (ASTM D2216). 5.12.6 All soils used as constructed liners shall have the following minimum values verified by testing in a soils laboratory: plasticity index equal to or greater than 30; percent passing 200 mesh sieve (-200) equal to or greater than 30%; percent passing a 25mm (1 inch) screen equal to 100%; coefficient of permeability less than or equal to lx10-7 cm/sec (3.94 x 10-8 inisec). R-\HENR5902\SAROSDMNuserdit\gps-007.doc I Specification No-: GPS-007 l Page17of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON4HAZARDOUS SOLID WASTE LANDFILL 5.12.7 Permeability tests for providing the suitability of soils to be used in constructing clay liners shall be performed in the laboratory using the procedures and guidance of 5.12.5. Field quality control must be provided by field density tests based on predetermined moisture-density compaction curves, Atterberg limits, and laboratory permeabilities of undisturbed field samples of compacted liner soils, unless an altemate plan is approved by ESSO. 5.12.8 Field permeability testing of in situ soils or constructed soil liners shall be in accordance with ASTM D5093 for those soil liners which are in the floor of the excavation and a suitable variation approved by ESSO for the sidewalls. 5.12.9 Soil and liner density shall be expressed as a percentage of the maximum dry density and at the corresponding optimum moisture content specified as appropriate by an engineer experienced in geotechnical engineering. These soils, after compaction, shall upon testing either in the laboratory or as a test pad in the field demonstrate a coefficient of permeability no greater than 1x10- cm/sec (3.94 x 1 C8 in./sec). 5.12.10 All quality control testing of soil liners shall be performed during the construction of the liner. In no instance shall any quality control field or laboratory testing be undertaken after completion of liner construction, except for that testing which is required of the final constructed lift, confirmation of liner thickness, or cover material thickness. 5.12.11 All soil testing and evaluation of either in situ soil or constructed soil liners shall be complete prior to installing the leachate collection system. RAMHENR59O2\SAROSDLvuserdir~gps-OO7.doc I Specification No.: GPS-007 | Page 18 of 36 Rev. I 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL 5.13 Soils and Liner Evaluation Report (SLER) and Flexible Membrane Liner Evaluation Report (FMLER) 5.13.1 Prior to the disposal of solid waste in any trench, or on any area, excavation, or unprotected surface, a SLER and a FMLER shall be prepared by the Contractor and submitted to ESSO for approval. Each SLER shall be prepared in accordance with the approved SLQCP. Any deviation from an approved SLQCP shall have prior written approval from ESSO. The SLER and FMLER shall report and summarize the results of tests performed to satisfy the requirements of the SLQCP. Any deficiencies found and remedial actions taken to bring the liners into compliance shall be noted. 5.13.2 Markers shall be placed on site at the landfill facility so that all disposal areas for which a SLER has been submitted and approved by ESSO are readily determinable. Such markers are to provide site workers immediate knowledge at all times of the extent of approved disposal areas. These markers shall be located so that they are not destroyed during operations. 5.13.3 Contractor shall provide sufficient documentation to ESSO to assure that the potential for contamination of waters is minimized. If ESSO determines that the SLER is incomplete or that the test data provided are insufficient to support the evatuation conclusions, additional test data or other information may be required, and use of the trench or disposal area shall not be allowed until such additional data are received, reviewed, and approved. Each SLER shall be signed by the Contractor. 5.13.4 The surface of a constructed soil liner should be covered with a layer of solid waste within a period of six months to mitigate the effects of surface erosion and rutting due to traffic Liner surfaces not covered with waste within six months shall be checked by the Contractor, who shall then submit a letter report on its findings to ESSO. Any required repairs shall be performed promptly. A new SLER shall be submitted on the new construction for all liners,that need repair due to damage. R:UHENR5902\SAROSDM\userdizgps-007.doc Specification No.: GPS-007 I Pagel 9 of 36 Rev. 1 | 300ct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL 5.14 Groundwater Monitoring Systems A groundwater monitoring system shall be installed that consists of a sufficient number of monitoring wells, installed at appropriate locations and depths, to yield representative groundwater samples from the uppermost aquifer, defined as the geologic formation nearest the natural ground surface that is an aquifer. This includes lower aquifers that are hydraulically interconnected with this aquifer vithin the facility's property boundary. The design of the groundwater monitoring system, including the number, spacing, and depths of monitoring wells or other sampling points, shall be certified by a qualified groundwater scientist The design shall be based on site specific technical information that must include a thorough characterization of: 3 aquifer thickness; * groundwater flow rate; * groundwater flow direction including seasonal and temporal fluctuation in flow, effect of site construction and operations on groundwater flow direction and rates; and * thickness, stratigraphy, lithology, and hydraulic characteristics of saturated and unsaturated geologic units, fill material overiying the uppermnost aquifer, materials of the uppermost aquifer, and materials of the lower confining unit of the uppermost aquifer. A geologic unit is any distinct or definable native rock or soil stratum. Background wells shall be installed to allow determination of the quality of background groundwater that has not been affected by potential leakage from a unit. A determination of background quality may include sampling of wells that are not hydraulically upgradient of the waste management area if hydrogeologic conditions do not allow Contractor to determine which wells are hydraulically upgradient Altematively, sampling at other wells can be performed if it will provide a better indication of background groundwater quality than is possible from upgradient wells. R:\ENRSSO2\SAROSDMuserdiigps-OO7.doc I Specification No.: GPS-007 Paqe200f 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL The downgradient monitoring system shall include monitoring wells installed to allow determination of the quality of groundwater passing the relevant point of compliance. The point of compliance is defined as the vertical surface located no more than 500 feet from the hydraulically downgradient limit of the waste management unit boundary, extending down through the uppermost aquifer underlying the landfill area, and located on land with access secured by ESSO. The final design of the groundwater monitoring system shall be submitted to ESSO for approval. The downgradient monitoring system shall be installed to ensure the detection of groundwater contamination in the uppermost aquifer. 5.15 Monitoring Wells Monitoring well installation and development must be supervised by a qualified geologist or engineer. 5.15.1 Drilling Monitoring wells shall be drilled by a method that shall allow installation of the casing, screen, etc., and that shall not introduce contaminants into the borehole or casing. Drilling techniques used for boring shall take into account the materials to be drilled, depth to groundwater, total depth of the hole, adequate soil sampling, and other such factors that affect the selection of the drilling method. If any fluids are necessary in drilling or installation, then clean, treated water shall be used. Other fluids shall be approved in writing by ESSO before use. Chemical analysis of the water used shall be provided to ESSO with the monitoring well report. The diameter of the boring shall be at least 100 mm (4 in.) larger than the diameter of the casing. When the boring is in hard rock, request to use a smaller annulus may be submitted to ESSO for approval. During drilling of the monitoring well, a log of the boring shall be made by a qualified geologist or engineer. R:\HENR5902\SAROSDMwtserdirNgps-007.doc Specification No.: GPS-007 Pae 21 of 36 Rev. 1 30Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL 5.15.2 Casing The well casing shall be: 50 to 100 mm (2 to 4 in.) in diameter, NSF-certified PVC schedule 40 or 80 pipe, flush-thread, screw joint (no glue or solvents); polytetrafluoroethylene (PTFE, such as Teflon) tape or 0-rings in the joints; no collar couplings. The top of the casing shall be at least 600 mm (2 ft.) above ground level. Where high levels of volatile organic compounds (VOCs) or corrosive compounds are anticipated, stainless steel or- PTFE casing and screen may be used, subject to approval by ESSO. 100 mm (4 in.) diameter casing is recommended because it allows larger volume samples to be obtained and provides easier access for development, pumps, and repairs. The casing shall be cleaned and packaged at the place of manufacture; the packaging shall include a PVC wrapping on each section of casing to keep it from being contaminated prior to installation. The casing shall be free of ink, labels, or other markings. The casing (and screen) shall be centered in the hole to allow installation of a good filter pack and annular seal, using appropriately placed centralizers. The top of the casing shall be protected by a threaded or slip-on top cap or by a sealing cap or screw-plug seal inserted into the top of the casing. The cap shall be vented to prevent buildup of methane or other gases. 5.15.3 Well Screen The screen shall be compatible with the casing and shall be of the same material. The screen shall not involve the use of any glues or solvents for construction. A wire-wound screen is recommended to provide maximum inflow area. Field-cut slots are not permitted for a well screen. Filter cloth shall not be used. A blank-pipe sediment trap, typically 300 to 600 mm (1 to 2 ft.) shall be installed below the screen. A bottom cap shall be placed on the bottom of the sediment trap. The sediment trap shall not extend through the lower confining layer of the water-bearing zone being treated. Screen sterilization methods are the same as those for casing. R:\HENR5902\SAROSDNMuserdir\gps.007.doc | Specification No.: GPS007 | Page 22 of 36 Rev. I 30Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL Selecton of the size of the screen opening should be performed by a person experienced with such work and shall include consideration of the distribution of particle sizes both in the water- bearing zone and in the filter pack surrounding the screen. The screen opening shall not be larger than the smallest fraction of the filter pack. 5.15.4 Filter Pack The filter pack, placed between the screen and the well bore, shall consist of pre-packaged, inert, clean, silica sand or glass beads; it shall extend from 30 cm to 120 cm (1 ft. to 4 ft) above the top of the screen. Open stockpile sources of sand or gravel are not permitted. The filter pack usually has a 30% finer grain size that is about 4 to 10 times larger than the 30% finer grain size of the water-bearing zone; the filter pack shall have a uniformity coefficient less than 2.5. The filter pack shall be placed with a tremie pipe to ensure that the material completely surrounds the screen and casing without bridging. The tremie pipe shall be cleaned prior to installing the first well and before each subsequent well. 5.15.5 Seals The annular seal shall be placed on top of the filter pack and shall be at least 600 mm (2 ft.) thick. It shall be placed in the zone of saturation to maintain hydration. The seal shall be composed of, in order of preference, coarse-grain sodium bentonite, coarse-grit sodium bentonite, or bentonite grout. Special care shall be taken to ensure that fine material or grout does not plug the underlying filter pack. Placement of a few inches of pre-packaged clean fire sand on top of the filter pack shall be used to prevent migration of the annular seal material into the filter pack. The seal shall be placed on top of the filter pack with a clean tremie pipe to ensure good distribution and shall be tamped with a clean rod to determine that the seal is thick enough. The bentonite shall be hydrated with clean water prior to any further activities on R:\HENR5902\SAROSDM\userdirNgps-007.doc | Specification No.: GPS-007 | Page23of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL the well and left to stand untl hydration is complete (8 to 12 hours, depending on the grain size of the bentonite). If a bentonite-grout (without cement) casing seal is used in the well bore, then it may replace the annular seal. A casing seal shall be placed on top of the annular seal to prevent fluids and contaminants from entering the borehole from the surface. The casing seal shall consist of a commercial bentonite grout or a cement-bentonite mixture. Drilling spoil, cutting, or other native materials are not permitted for use as a casing seal. Quick- setting cements are not permitted for use because contaminants may leach from them into the groundwater. The top of the casing seal shall be between 1500 mm and 600 mm (5 ft. and 2 ft.) from the surface. 5.15.6 Concrete Pad Concrete, with a compressive strength of 25 MPa (3625 psi), shall be placed from the top of the casing seal (600 to 1500 mm (2 to 5 ft.) below the surface) continuously to the top of the ground to form a pad at the surface. This formed surface pad shall be at least 150 mm (6 in.) thick and not less than 1200 mm (4 ft.) square or 1500 mm (5 ft.) in diameter. The pad shall contain sufficient reinforcing steel to ensure its structural integrity in the event that soil support is lost. The top of the pad shall slope away from the well bore to the edges to prevent ponding of water around the casing or collar. 5.15.7 Protective Collar A steel protective pipe collar shall be placed around the casing "stickup" to protect it from damage and unwanted entry. The collar shall be set at least 300 mm (1 ft.) into the surface pad during its construction and should extend at least 75 mm (3 in.) above the top of the well casing (and top cap, if present). The top of the collar shall have a lockable hinged top flap or cover. A sturdy lock shall be installed, maintained in working order, and kept locked when the well is not being bailed/purged or sampled. The well number or other designation shall be marked permanently on the collar including the total depth of the well and its elevation on the collar. R:\ENR5SO2XSAROSOM\userdir\gps-007.doc Specification No.: GPS-007 Page 24of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL 5.15.8 Protective Bamer Where monitoring wells are likely to be damaged by moving equipment or are located in heavily traveled areas, a protective barrier shall be installed. A typical barrier is three or four 150 mm (6 in.) to 300 mm (12 in.) diameter pipes set in concrete just off the protective pad. The pipes can be joined by pipes welded between them, but consideration must be given to well access for sampling and other activities. Separation of such a pipe barrier from the pad means that the barrier can be damaged without risk to the pad and well. Other types of barriers may be approved by ESSO. 5.15.9 Unusual Conditions Where monitoring wells are installed in unusual conditions, all aspects of the installation shall be submitted to ESSO in writing in advance for their consideration. Such aspects include, for example, the use of cellar-type enclosures for the top-well equipment or multiple completions in a single hole- 5.15.10 Well Development After a monitoring well is installed, it shall be developed to remove artifacts of drilling (clay films, bentonite pellets in the casing, etc.) and to open the water-bearing zone for a maximum flow into the well. Development should continue until all of the water used or affected during drilling activities has been removed and field measurements of pH, specific conductance, and temperature have stabilized. Failure to develop a well properly may mean that it is not properly monitoring the water-bearing zone or may not yield adequate water for sampling even though the water-bearing zone is prolific. R:\HENRS90Z\SAROSDM\userdir\gps-007.doc I Specification No.: GPS-007 Page 25 of 36 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL 5.15.11 Location and Elevation Upon completion of a monitoring well, the location of the well and all appropriate elevations associated with the top-well equipment shall be surveyed. The elevation shall be surveyed to the nearest 0.003 m (0.01 ft.) above mean sea level (vvith year of the sea-level datum shown). The point on the well casing for which the elevation was determined shall be permanently marked on the casing. The location shall be given in terms of the latitude and longitude at least to the nearest tenth of the second or shall be accurately located with respect to the landfill grid system. 5.15.12 Reporting Monitoring well installation and construction details shall be completed and submitted to ESSO within 30 days of well completion. A copy of the detailed geologic log of the boring, any particle size or other sample data from the well, and a site map drawn to scale showing the location of all monitoring wells shall be submitted to ESSO. 5.15.13 Damaged Wells Any monitorng well that is damaged to the extent that it is no longer suitable for sampling shall be reported to ESSO who shall make a determination about whether to repair or replace the well. 5.15.14 Plugging and Abandonment Any monitoring well that is no longer used shall be properly plugged and abandoned. No abandonment shall take place without prior authorization in writing by ESSO. Procedures for abandonment shall be as given in GPS-005 (Water Wells (Temporary)). 6.0 OPERATING PROCEDURES Landfill operation shall consist of placing, spreading and compacting solid waste materials approved for landfill disposal in Contractor's Waste Management Plan in landfill cell trenches in uniform layers separated by layers of cover material. The R:\HENR5902\SAROSDOMuserdir\gps-007.doc I Specification No.: GPS-007 Page 26 of 36 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON44AZARDOUS SOLID WASTE LANDFILL landfill site will be capped and closed when wastes are no longer received at the site. 6.1 Health and Safety The disposal site shall be operated in such a manner as to protect the health and safety of personnel associated with the operation. Contractor shall instruct personnel as to standard procedures for maintaining safety in accordance with GPS-008 (Project Safety Requirements) and Section 22 of the Coordination Procedure - Project Safety Practices. In addition, the following measures shall be implemented: a) Personal safety devices and gear shall be provided by Contractor to facility personnel. b) Safety and warning devices shall be provided on all equipment used to spread and compact waste or cover material. c) Contractor shall take appropriate steps to prevent and control on site populations of disease vectors using proper compaction and daily cover procedures, and the use of other approved methods as needed. d) Litter and other windblown materal shall be collected on a regular basis and retumed to the active disposal area or working face as necessary to minimize unhealthy, unsafe, or unsightly conditions. e) The working surfaces of all equipment that come in contact with wastes shall be washed down on a regular basis. Wastewaters shall not be allowed to accumulate on site without proper treatment to prevent the creation of odors or an attraction to disease vectors. f) Contractor shall make provisions to extinguish any fires in wastes being delivered to the site or which occur at the working face or within equipment or personnel facilities. 6.2 Placement of Solid Waste Material Waste materials shall be trucked to the landfill and placed in the landfill cell trenches. The waste shall be compacted on slopes less than 3:1 (H:V) in lifts of 0.6 m (2 ft.) or less by three to five passes of tracked equipment. Solid waste handling equipment shall on any operating day be capable of performing the following functions: * Spreading the waste materials in an uncompacted layer with a maximum thickness of 60 cm (2 ft.) while confining it to the smallest practicable area, * Compacting the spread waste material to the smallest practicable volume, and R:\HENR5902\SAROSJM\userdir\gps.007.doc Specification No.: GPS-007 Page 27 of 36 Rev. 1 | 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOUD WASTE LANDFILL Placing, spreading and compacting the cover material over a waste layer by the end of the day's operation. 6.3 Daily and Intermediate Cover Soil cover shall be placed to control insects, rodents, scavenging birds, blowing litter, flies, odors and to provide better access to the working face. The intent is to ensure that deposition of waste will not adversely affect the environment or public health. A soil cover (minimum 150 mm (6 in.) thickness) shall be placed and compacted daily. Acceptable cover material shall meet the criteria given in Table 2. An intermediate soil cover (minimum 300 mm (12 in.) thickness) shall be placed and compacted on areas which will not receive additional wastes for longer periods. The cover material for each layer of waste shall be spread and compacted in accordance with Table 3. Table 3. Depth of Cover Material TYPE OF COVER DAILY INTERMEDIATE FINAL [Period of Site [P < 1 week] [week < P < 1 year] [P > 1 year] Inactivit (P)] Compacted 150 mm 300 mm 600 mm Thickness (6 in.) (1 ft.) (2 ft.) 6.4 Leachate Collection and Disposal The leachate sump shall be monitored by Contractor for level of accumulated liquid and leachate quality. The sump shall be monitored on a regular basis to ensure that overflowing of the sump does not occur. The leachate quality shall be monitored semi-annually. The leachate shall be extracted from the sump and disposed of by Contractor in its sewage treatment plant. If necessary, Contractor shall adjust leachate pH and treat to remove heavy metals and excess salts that would not be compatible with the sewage treatment design parameters and effluent quality before sending the leachate to its sewage treatment system. R-.\HENR5s9o2\SAROSDtvuserdiAgps-007.doc Specification No.: GPS-007 Page 28of 36 Rev. 1 | 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL The leachate collection system must be property maintained on an annual basis (or more often, as necessary). The leachate lines shall be cleaned out by the Contractor and the sump pump inspected once a year. 6.5 Groundwater Monitoring The groundwater monitoring program shall include consistent sampling and analysis procedures that are designed to ensure monitoring results that provide an accurate representation of groundwater quality at the background and downgradient wells. Contractor shall notify ESSO promptly (within 1 day) in writing of changes in site construction or operation or changes in adjacent property that affect or are likely to affect the direction and rate of groundwater flow and the potential for detecting groundwater contamination from the solid waste landfill that may require the installation of additional monitoring wells or sampling points. 6.6.1 Groundwater Sampling and Analysis Plan Contractor shall submit a groundwater sampling and analysis plan (GWSAP) to ESSO for review and approval prior to commencement of sampling and shall maintain a current copy in the operating record. The GWSAP shall: a) include procedures and techniques for sampie collection, sample preservation and shipment, analytical procedures, chain-of-custody controls, quality assurance, and quality control; b) provide for measurement of groundwater elevations at each sampling point prior to bailing or purging. Measurement at an event shall be accomplished over a period of time short enough to avoid temporal variations in water levels. Sampling at each event shall proceed from the point with the highest water-level elevation to those with successively lower elevations unless contamination is known to be present, in which case wells not likely to be contaminated shall be sampled prior to those that are known to be contaminated unless an altemative procedure is approved by ESSO; and c) include sampling and analytical methods that are appropriate for groundwater sampling and that accurately measure R:kHENR5902RSAROSDM\userdiAgps-007.doc Specification No.: GPS-007 Page29of 36 Rev. 1 30Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL hazardous constituents and other monitoring parameters in groundwater samples. The number of samples to be collected to establish groundwater quality data shall be consistent with the appropriate statistical procedures for determination of evidence of contamination. 6.5.2 Groundwater Sampling and Analysis Groundwater samples shall not be field-filtered prior to laboratory analysis unless in accordance with the ESSO approved groundwater sampling and analysis plan. The sampling procedures shall be protective of human health and the environment and appropriate for generation of statistically significant data. Contractor shall establish background groundwater quality in hydraulically upgradient wells or in background wells for each of the monitoring parameters or constituents required in the ground monitoring program for a solid waste landfill. Downgradient groundwater data shall not be adjusted by subtracting background groundwater data. Contractor shall determine within 7 calendar days after completing sampling and analysis whether or not there is evidence of a statistically significant change from background values for each constituent required in the groundwater monitoring program for the solid waste landfill. In determining if there is evidence of a statistically significant change from background, Contractor shall compare the groundwater quality of each tested constituent at each monitoring well or other sampling points to the background value of that constituent. 6.5.3 Constituents to be Monitored Compounds that groundwater samples shall be tested for include those listed in Table 4, at a minimum. ESSO may delete any of the constituents listed in Table 4 if it can be documented that the removed constituents are not reasonably expected to be in or derived from the waste contained in the landfill. Contractor may R:\HENR5902\SAROSDOMuserdirNgps.007.doc | Specification No.: GPS-007 | Page 30 of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOUD WASTE LANDFILL also petition ESSO for removal of constituents from the list if it believes these conditions are met. Parameters shall be tested using methods in Standard Methods for the Examination of Water and Wastewater (Mary Ann H. Franson, editor, American Public Health Association, 1995). Test results shall be certified by Contractor and the records of said tests kept as per Section 30 of the Coordination Procedure. ESSO may establish an altemative list of inorganic indicator constituents in lieu of some or all of the heavy metals if the alternative constituents provide a reliable indication of inorganic releases from the solid waste landfill to the groundwater. ESSO may also add inorganic or organic constituents to those to be tested if they are reasonably expected to be in or derived from the waste contained in the unit or if they are likely to provide a useful indication of releases from the solid waste landfill to the groundwater. Table 4. Sample Analysis Parameters INORGANIC CONSTITUENTS CAS RN"'2 I Antimony (Total) 2 Arsenic (Total) 3 Barium (Total) 4 Beryllium (Total) 5 Cadmium (Total) 6 Chromium (Total) 7 Cobalt (Total) 8 Copper (Total) 9 Lead (Total) 10 Mercury (Total) 11 Nickel (Total) 12 Selenium (Total) 13 Silver otal) 14 Thallium (Total) 15 Vanadium (Total) 16 Zinc (Total) ORGANIC CONSTITUENTS3 17 Acetone 67-64-1 18 I Acrylonitrile 107-13-1 R:.\HENR5902\SAROSDNMQserdir\gps007.doc | Specification No.: GPS-007 | Page 31 of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL 19 Benzene 71-43-2 20 Bromochloromethane 74-97-5 21 Bromodichloromethane 75-27-4 22 Bromoformr(tribromomethane) 75-25-2 23 Carbon disulfide 75-15-0 24 Carbon tetrachloride 56-23-5 25 Chlorobenzene 108-90-7 26 Chloroethane (ethyl chloride) 75-00-3 27 Chlorforrn (trichloromethane) 67-66-3 28 Dibromochloromethane 124-48-1 _ (chlorodibromomethane) 29 1,2-Dibromo-3-chloropropane (DBCP) 96-12-8 30 1,2-Dibromoethane (ethylene dibromide, EDB) 106-93-4 31 o-Dichlorobenzene (1 ,2-dichlorobenzene) 95-50-1 32 pDichlorobenzene (1,4-dichlorobenzene) 106-46-7 33 trans-1 ,4-Dichloro-2-butene 110-57-6 34 1,1-Dichloroethane (ethylidene chloride) 75-34-3 35 1,2-Dichloroethane (ethylene dichloride) 107-06-2 36 1,1-Dichloroethylene (1,1-dichloroethene, 75-35-4 vinylidene chloride) __ _______ 37 cis-1,2-Dichloroethylene (cis-1,2- 156-59-2 dichloroethene) 38 trans-1 ,2-Dichloroethylene (transl ,2- 156-60-5 dichloroethene 39 1,2-Dichloropropane (Propylene dichloride) 78-87-5 40 cis-1,3-Dichloropropane 10061-01-5 41 trans-=,3-Dichloropropene 10061-02-6 42 Ethylbenzene 100-41-4 43 2-Hexanone (methyl butyl ketone) 591-78-6 44 Methyl bromide (bromomethane) 74-83-9 45 Methyl chloride (chloromethane) 74-87-3 46 Methylene bromide (dibromomethane) 74-95-3 47 Methylene chloride (dichloromethane) 75-09-2 48 Methyl ethyl ketone (MEK, 2-butanone) 78-93-3 49 Methyl iodide (iodomethane) 74-88-4 50 4-Methyl-2-pentanone (methyl isobutyl ketone) 108-10-1 51 Styrene 100-42-5 52 1,1,1,2-Tetrachloroethane 630-20-6 53 1,1,2,2-Tetrachloroethane 79-34-5 54 Tetrachloroethylene (tetrachloroethene, 127-18-4 perchloroethylene) 55 Toluene 108-88-3 56 1,1,1-Trichloroethane (methychloroform) 71-55-6 57 1,1,2-Trichloroethane 79-00-5 R-.\NENR5902\SAROSDMTuserdirrgps-07.doc | Specification No.: GPS-007 Page32Of 36 Rev. I 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL 58 Trichloroethylene (tnchloroethene) 79-01-6 59 Trichlorofluoromethane (CFC-1 1) 75-694 60 1 ,2,3-Trichloropropane 96-18-4 61 Vinyl acetate 108-05-4 .62 Vinyl chloride 75-01_4 63 Xylenes 1330-20-7 The Chemical Abstracts Service registry number (CAS RN).. 2 Where 'Total' is entered, all species in the groundwater that contain the element are included. 3 Common names of the VOCs are those widely used in govemment regulation, scientific publications, and commerce. Synonyms exist for many of them. 6.5.4 Monitoring Frequency The monitoring frequency for all constituents shall be annually during the active life of the facility and the closure period. A minimum of four statistically independent samples from each background and each downgradient well shall be collected and analyzed for the consttuents. The independence of the fouF samples shall be achieved by bailing or purging at least one well volumes (or to dryness, if less) from each well before each of the four samples is collected. ESSO may specify an appropriate altemative frequency for repeated sampling and analysis of the constituents. The alternative frequency shall be no less than annual and shall be based on factors such as lithology and hydraulic conductivity of the aquifer and unsaturated zone, groundwater flow rates, minimum distance of travel from waste to monitoring wells, and resource value of the uppermost aquifer. 6.5.5 Changes in Groundwater Quality Not later than 60 days after each sampling event, Contractor shall notify ESSO in writing if there has been a statistically significant change from background of any tested constituent at any monitoring well. If a statistically significant change from background of any tested constituent at any monitoring well has occurred, Contractor shall R:\HENR5902XSAROSDM\userdiAgps-007.doc Specification No.: GPS-007 Paoe 33 of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOUID WASTE LANDFILL immediately place a notice in the operating record describing the increase. If a statistically significant change from background of any tested constituent at any monitoring well has occurred and Contractor has reasonable cause to think that a source other than the solid waste landfill caused the contamination or that the statistically significant change resulted from error in sampling, analysis, statistical evaluation, or natural variation in groundwater quality, then Contractor shall submit a report providing documentation to this effect. The report shall be prepared by a qualified grourLdwater scientist and submitted to ESSO for review and approval not later than 90 days after the sampling event. 6.6 Records Contractor shall maintain disposal records covering at least the following: a) Major operational problems or difficulties. b) Qualitative and quantitative evaluations of the environmental impact of the disposal site including results of: * Leachate sampling and analysis; G Ground and surface water quality sampling and analysis upstream and downstream of the site; * Source of daily, intermediate, and final cover material; * Waste compaction; Gas generafion and gas control procedures (as appropriate); Vector control efforts; and * Dust and litter control efforts. c) Quantitative measurements of the solid wastes handled, accomplished through routine or periodic utilizatiori of scales and topographic surveys of the site. d) Description of amounts and types of solid waste materials received in each landfill cell identified by source of materials as per the database required by the Coordination Procedure Section 30 - Environmental Management. This database shall be tumed over to ESSO at project completion. R:\FENR5902\SAROSDvl\userdir\gps-007.doc Specification No: GPS-007 Page 34 of 36 Rev. 1 | 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON-HAZARDOUS SOLID WASTE LANDFILL 7.0 CLOSURE REQUIREMENTS Within 180 days of the last receipt of wastes for landfill, Contractor shall complete the installation of a final cover system for the landfill that is designed and constructed to minimize infiltration and erosion. The final cover system shall be composed of no less than 750 mm (2.5 ft.) of soil and consist of an infiltration layer overlain by an erosion layer as follows: * The infiltration layer shall consist of a minimum of 450 mm (18 in.) of earthen material with a coefficient of permeability no greater than 1x10-5 cm/sec (3.94 x 10-6 in./sec) overlain by a synthetic membrane that has a permeability less than or equal to the permeability of the bottom liner system. The minimum thickness of the synthetic membrane shall be 0.5 mm (20 mils), or 1.5 mm (60 mils), in the case of HDPE, in order to ensure proper seaming of the synthetic membrane. * The erosion layer shall consist of a minimum of 300 mm (12 in.) of earthen material that is capable of sustaining native plant growth and shall be seeded or sodded immediately following the application of the final cover in order to minimize erosion. Contractor shall submit to ESSOCfor approval a written final closure plan that describes the steps necessary to close the landfill site. The final closure plan, at a minimum, shall include the following information: * a description of the final cover design and methods and procedures to be used to install the cover, * an estimate of the largest area of the landfill site ever requiring a final cover at any time during the active life of the landfill; * an estimate of the maximum inventory of wastes ever on-site over the active life of the landfill and a summary of the types and amounts of waste contained in each landfill cell; * a schedule for completing all activities necessary to satisfy the closure criteria; and R:U\ENR5902\SAROSDOIuserdir\gps-007.doc Specification No.: GPS-007 Page 35 of 36 Rev. 1 30 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR NON4HAZARDOUS SOLID WASTE LANDFILL * a final contour map depicting the proposed final contours, establishing top slopes and side slopes, proposed surface drainage features, and protection of any 100-year flood plain. No later than 45 days prior to the initiation of closure activities for the landfill site, Contractor shall provide written notification to ESSO of the intent to close the landfill site and place this notice of intent in the operating record. Following receipt of the required final closure documents, ESSO shall acknowledge the termination of operation and closure of the facility or site and evaluate whether it is properly closed. Contractor shall correct any deficiencies identified by ESSO in its evaluation. Quality control testing documentation is as follows: * Contractor is responsible for placing and compacting clay soils for the final cover infiltration layer. e Contractor shall test the 450 mm (18 in.) of compacted material for its coefficient of permeability at a frequency of no less than one test per surface acre of final cover. * Permeability data shall be submitted to ESSO for approval. RASHENR5902\SAROSDM\userdiAgps.007.doc | Specification No.: GPS-007 Page 36 of 36 Rev. 1 30 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS GPS-008 Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By 0 19 Nov 96 40 CLO PRS DJS Issued for Proposals 1 _________ 40 MEF DJS Issued for EMP E:\GPS-008.DOC Specification No.: GPS-008| Page 1 of 40 Rev. 1i 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS TABLE OF CONTENTS 1.0 GENERAL ..........................................................4 2.0 CLOTHING REQUIREMENTS ..........................................................7 3.0 PERSONAL PROTECTIVE EQUIPMENT ..........................................................8 4.0 SIGNS, SIGNALS, BARRICADES, AND LIGHTS ..........................................................9 5.0 RIGGING EQUIPMENT FOR MATERIAL HANDLING .................................................. 10 6.0 HAND AND POWER TOOLS ......................................................... 10 7.0 COMPRESSED GASES ......................................................... 11 8.0 SCAFFOLDS ......................................................... 12 9.0 JOB SiTE TRANSPORTATION RULES ......................................................... 13 10.0 CRANES, DERRICKS AND LIFTING EQUIPMENT .................................................... 14 11.0 CRANE SPECIFICS ......................................................... 16 12.0 EQUIPMENT AND MOTOR VEHICLES, AND MARINE OPERATIONS ..................... 17 13.0 ELECTRICAL .......................................................... 18 14.0 LADDERS AND STAIRWAYS ......................................................... 19 15.0 FLOOR AND WALL OPENINGS AND STAIRWAYS .................................................. 20 16.0 EXCAVATIONS AND TRENCHING ......................................................... 20 17.0 STEEL ERECTION ......................................................... 21 18.0 CONFINED AREAS OR SPACES ......................................................... 22 19.0 HOUSEKEEPING ................ 23 20.0 CONTRACTOR RESPONSIBILITIES - MEDICAL SERVICES ................................... 25 21.0 MINOR CUTS, SCRATCHES, BRUISES, ETC. - FIRST AID ...................................... 26 22.0 MEDICAL CASES NOT REQUIRING EVACUATION ................................................. 26 23.0 MEDICAL CASES REQUIRING EVACUATION SERVICE ......................................... 27 24.0 CONTRACTOR / SUB-CONTRACTOR DOCUMENTATION ..................................... 28 25.0 REQUIRED ACCIDENT/INJURY INFORMATION ................................................... 31 26.0 SAFETY RULES AND PROCEDURES ................................................... 33 27.0 HAZARDOUS MATERIALS PROCESS AND/OR CHEMICALS .................................. 33 28.0 FIRE SUPPRESSION EQUIPMENT ................................................... 34 29.0 SAFETY & PERSONNEL PROTECTIVE EQUIPMENT .............................................. 34 30.0 WORK PERMIT REQUIREMENTS ................................................... 35 E:\GPS-008.DOC I Specification No.: GPS-008 | Page 2 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 31.0 EMERGENCY PROCEDURES .......................................................... 36 32.0 MEDICAL SERVICES .......................................................... 37 33.0 SAFETY INCENTIVE PROGRAMS .......................................................... 37 34.0 SAFETY MEETINGS .......................................................... 37 35.0 SUB-CONTRACTORS .......................................................... 37 36.0 DISCIPLINARY PROCEDURES .......................................................... 37 37.0 PROJECT SAFETY GOALS .......................................................... 38 38.0 PURPOSE STATEMENT .......................................................... 38 39.0 SAFETY TRAINING .......................................................... 38 40.0 SPECIAL PROJECTS ISSUES .......................................................... 39 41.0 CRAFT SPECIFIC CERTIFICATION PROGRAMS ..................................................... 40 42.0 SAFETY AUDITS/INSPECTION PROGRAMS .......................................................... 40 APPENDIX I MONTHLY SAFETY SUMMARY REPORT ......................................................... 1-1 APPENDIX II ALCOHOL AND DRUG USE POLICY FOR CONTRACTORS ................... 11-1 APPENDIX III JOB SAFETY ANALYSIS (THE JSA) ........................................................ 111-1 APPENDIX IV HOW TO CONDUCT A ROOT CAUSE ANALYSIS . ...................... IV-1 APPENDIX V SUB-CONTRACTOR SAFETY QUESTIONNAIRE .................................... V-1 E:\GPS-008.DOC Specification No.: GPS-008 | Page 3 of 40 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 1.0 GENERAL All personnel on this project, including the employees of Contractor, will be required to comply with these requirements. Contractor shall ensure and indicate that all its employees have received and read these requirements. These requirements shall be fully explained to each employee and Contractor and employee must acknowledge that the employee understands its content. Contractor must provide proof that employees have received this information which shall then be retained by Contractor with the employee's personnel file. In addition, Contractor shall comply with the following: * Managers include safety, health and environmental considerations in ongoing business strategies, decisions, planning and execution. * Managers maintain their safety, health and environmental knowledge at a level commensurate with their job responsibilities. * For major projects, there is a structured plan for safety, health and environmental activities addressing the following areas throughout the project life: Risk Assessment, Prevention and Mitigation, Regulatory Compliance, Emergency Preparedness, Quality Assurance. * Human factors are explicitly considered in facilities design and construction. * Esso reserves the right to regulate smoking, open fires, carrying matches, and welding permits when and where deemed necessary in the interest of safety. Contractor shall be responsible for and so enforce Contractor's personnel, the personnel of all Sub-contractors, and visitors to comply with the regulations and restrictions as directed. Smoking, open fires, and similar regulations may vary at different locations. * When certain areas are designated as "OPEN AREAS" the Esso Safety Representative will issue a "HOT WORK PERMIT' which will authorize open flames, burning, and welding activities during regularly scheduled working hours. * Within certain areas designated as "RESTRICTIVE AREAS," the Esso Safety Representative will issue a "HOT WORK PERMIT" daily which will authorize open flames, burning, and welding activities during regularly scheduled work hours. Smoking will be permitted only in designated compounds. "OPEN E:\GPS-008.DOC Specification No.: GPS-008 Page 4 of 40 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS AREAS" shall be reclassified as "RESTRICTED AREAS" whenever designated by Esso and upon completion of the work. (NOTE: This Hot Work Permit does not allow burning of trash and material cleared from ROW). * No firearms are allowed on the job site without prior written approval by Esso. * Use of photographic equipment requires specific approval by Esso. * The Esso Safety Representative will verify adherence to procedures on a regular basis. e Contractor is required to perform a self-assessment and audit of their safety program to insure compliance and effectiveness that will incorporate checks and authorizations that take a proactive approach that is consistent with risk or hazards that may be encountered. This self-assessment must be performed on a regular basis and documented for Esso review. - Contractoes and Sub-contractors' project managers, construction managers, supervisors and safety advisors shall meet periodically to discuss project safety. The frequency, attendees and topics of these meetings shall be included in Contractor's safety execution plan. * Contractor's and Sub-contractors' supervisors and safety advisors shall conduct daily periodic inspections of all facilities and the Work in progress at the Work Site. * The frequency of Work Site inspections shall be included in Contractor's safety execution plan. * Any safety rule infractions, unsafe working practices or unsafe conditions identified during these inspections shall be promptly corrected by Contractor. * The periodic safety inspections shall be used by Contractor to evaluate the effectiveness of its safety program, and whether it is achieving the desired results. * Although Contractor's line management is responsible for the safety of their personnel, Contractor's and Sub-contractors' safety advisors shall provide E:\GPS-008.DOC Specification No.: GPS-008 | Pae 5of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS overall leadership for Contractor's safety program and shall monitor work activities at the Work Site continuously. * Esso reserves the right to inspect the Work Site at any time and will call Contractor's attention to infractions/hazards and expect prompt follow-up from Contractor. These Esso activities in no way relieve Contractor of its responsibilities for safe execution of the Work. * Contractor shall promptly investigate any accident or incident which results in a fatality, lost time injury, damage to property or equipment in excess of US $1,000 or a serious "near miss," i.e., an incident with the potential to cause a fatality, a lost time injury or damage in excess of US $1,000. As part of this investigation Contractor shall complete a Root Cause Analysis of the incident as outlined in Appendix IV to this section. * Normally, the investigation shall be conducted by a committee comprised of Contractor's superintendent responsible for the injured worker or incident, Contractor's safety advisor, a representative of Esso, and other representatives of Esso/Contractor/Sub-contractor who are familiar with the safety practices involved and who can contribute to the analysis of the incident and make recommendations for action to prevent recurrence. * The investigation shall begin promptly after the accident or incident. Where applicable, photographs shall be taken of the scene of the accident, as well as any equipment or apparatus involved in the accident. The results of the investigation, together with the Root Cause Analysis referred to above and the committee's recommendations for preventive action, shall be submitted in writing to Esso within five working days after the incident occurs. * Contractor shall also review and analyze all other injuries, including those requiring only first aid, to established trends that may indicate deviations from established work standards and safe working practices. Contractor, with Esso's approval, shall take appropriate corrective action, which may include publicizing the results of the analyses. * Contractor shall keep written and photographic records of all fatalities, lost time injuries, and accidental property damage at the Work Site. The records shall include the reports of investigation results described in 25.11 above, as well as the identity of all witnesses, persons and property involved and corrective actions taken. Contractor shall keep these records two years after acceptance, and make them available to Esso upon request. E:\GPS-008.DOC | Specification No.: GPS-008 | Page 6 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS Contractor shall prepare and submit to Esso by the fifth day of each month a safety report which covers the previous month's activities. The safety report, which shall be part of the monthly progress report, shall include: - A tabulation of all accidents and near misses that occurred during the reporting period, together with their apparent causes, in the format shown in Table 1. - A tabulation of all hazards observed at the Work Site during the reporting period, and a description of corrective actions taken to mitigate or eliminate them. - Graphs showing the recordable injuries rates and lost workday injuries rates since the beginning of construction activities. - A summary of Contractor's safety activities, problem areas and corrective actions, government visits and safety audits during the reporting period. - Contractor shall promote off-the-job safety 2.0 CLOTHING REQUIREMENTS 2.1 Long sleeve shirts shall be wom at all times (no tank tops). All shirts shall be tucked into trousers at all times. All shirts shall be hemmed at neck, sleeve, and tail. 2.2 Long pants are required at all times in all work areas. 2.3 Sandals, tennis shoes, or any other street type shoe will not be permitted. A well constructed boot/shoe that provides adequate protection with a hard flexible sole and steel toe shall be wom in all work areas. Exposure dictates whether or not an additional protective toe guard will be required. Contractor will be responsible for defining this requirement in its safety plan. All requirements as a minimum must meet OSHA 1926.96. 2.4 Loose fitting clothes or jewelry shall not be wom around moving machinery, padding machines, grinding operations, welding, etc. 2.5 Hair that could come in contact with, or be caught in machinery, shall be protected by a hard hat or hair net, as appropriate. E:\GPS-008.DOC Specification No.: GPS-008 Page 7 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 3.0 PERSONAL PROTECTIVE EQUIPMENT 3.1 Hard hats shall meet specifications contained in American National Standards Institute (ANSI), Z89.1-1981 and/or Z89.2-1971, or equivalent international standards. Hard hats are to be wom in all designated work areas as per OSHA 1926.100. 3.2 Safety glasses with side shields are required in construction areas at all times as per OSHA 1926.102. 3.3 Approved eye and face protection is required as follows: Goggles, welding hoods and shields, and face shields will be required to be properly worn when in the area of operations, such as when welding, burning, grinding, chipping, chemical handling, corrosive liquids or molten materials, drilling, sawing, driving nails, power actuated tools, concrete pouring, tampers and gas fueled operated equipment (e.g.,. chain saws). This section will also apply to those employees of Contractor who are assisting any worker as an apprentice or helper. Prescription glasses must be approved safety glasses or approved safety glasses and frames or approved eye protection shall be worn as per OSHA 1926.102. 3.4 Only approved hearing and respiratory equipment shall be worn. The selection, fitting, and maintenance requirements shall be met by Contractor as per OSHA Technical Requirements 1926.101. 3.5 Safety hamesses will be required exclusively and shall be wom by all employees when working 6 feet (2.0 meters) or more above the ground or when working in a precarious position. The shock absorbing lanyard shall be securely attached to the employee 100% of the time and shall allow a maximum fall distance of 6 feet (2.0 meters). Safety harnesses shall also be worn and attached to the tie-off rail when working out of extendible and articulating boom plafforms and to vertical drop lines when working from suspended scaffolding. Safety belts shall not be allowed on worksite as per OSHA 1926.104 and 1926.105 including all requirements of 1926.500 through 1926.503. 3.6 Seat belts shall be wom by all employees operating any motor vehicle and any equipment with rollover protection structures. For equipment designed by manufacturer without rollover protection, seat belts may be waived. EAGPS-008.DOC Specification No.: GPS-008 Page 8 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 3.7 Safety nets shall be provided when work places are more than 25 feet (8.0 meters) above the ground where the use of other fall protection devices is impractical as per OSHA 1926.105. 3.8 Contractor must consult with the Esso Safety Representative and follow all applicable safety rules and regulations concerning the following: * Use of lasers * Radiation sources * Explosive power tools * Hazardous materials 4.0 SIGNS, SIGNALS, BARRICADES, AND LIGHTS 4.1 Signs, signals, and barricades shall be visible at all times where a hazard exists including all requirements of OSHA 1926.200 through 1926.203. 4.2 All streets, roads, highways, and other public thoroughfares which are closed to traffic shall be protected by effective barricades on which shall be placed acceptable and highly visible reflective waming signs and flashing lights (when required). Barricades shall be located at the nearest intersecting public highway or street on each side of the blocked section. 4.3 All open trenches and other excavations shall be provided with suitable barriers, signs, and lights to the extent that adequate protection is provided to the public. Obstructions, such as material piles and equipment, shall be provided with similar warning signs and lights. 4.4 All barricades and obstructions shall be illuminated by means of warning lights from one hour before sunset to one hour after sunrise. Materials stored upon or alongside public streets and highways shall be so placed, and the work at all times shall be so conducted, as to cause the minimum obstruction and inconvenience to the traveling public. 4.5 All barricades, signs, lights, and other protective devices shall be installed and maintained in conformity with applicable statutory requirements and, where within railroad and highway ROW, as required by the authority having jurisdiction thereover, if requirements are more stringent than OSHA requirements. E:\GPS-008.DOC Specification No.: GPS-008 Page 9 of 40 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 4.6 When any work is performed at night or where daylight is shut off or obscured, Contractor shall provide artificial light sufficient to permit work to be carried on efficiently, satisfactorily, and safely, and to permit thorough inspection. During such time periods the access to the place of work shall also be clearly illuminated. All wiring for electric light and power shall be installed and maintained in accordance with permanent facilities codes and requirements, securely fastened in place at all points, and shall be kept as far away as possible from telephone wires, signal wires, and wires for firing blasts. 4.7 Signs, signals, and barricades shall be removed when the hazard no longer exists. 4.8 Contractor's employees working in an area of potential traffic hazard shall wear approved reflective type vests. 5.0 RIGGING EQUIPMENT FOR MATERIAL HANDLING NOTE: All rigging operations shall comply with OSHA 1926.251. 5.1 All rigging equipment shall be free from defects, in good operating condition, and maintained in a safe condition. 5.2 Rigging equipment shall be inspected by a designated, competent employee of Contractor prior to initial use on the job site and monthly thereafter to ensure that it is safe. Records shall be kept on job site of each inspection by Contractor and shall be made available to Esso upon request. All rigging equipment shall be color coded for inspection identification. 5.3 Contractor's damaged rigging equipment shall be immediately removed from service by Contractor. 6.0 HAND AND POWER TOOLS NOTE: All hand and power tool operations shall comply with OSHA 1926.300 - 1926.307. 6.1 All hand and power tools, whether fumished by Contractor, or by Contractor's employee, shall be maintained in a safe condition. 6.2 Contractors shall not issue nor permit the use of unsafe hand or power tools. E:\GPS-008.DOC Specification No.: GPS-008 Pae 1e0 of 40 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 6.3 Electrical power tools shall be grounded/earthed or double insulated with proper assured equipment grounding inspections or Ground Fault Circuit Interrupter protection provided. Portable welding machines having electrical receptacles shall be grounded. 6.4 Pneumatic power tools shall be secured to the hose or whip by some positive means. Safety pins shall be used in all connections. 6.5 Only properly trained Contractor employees shall operate power actuated tools. Certification records, employee certification cards, or equivalent certification documentation shall be maintained by Contractor on each of its employees using power actuated tools during performance of the work. 6.6 All grinding machines shall conform to OSHA and ANSI, or local equivalent requirements, if local requirements are more stringent. Reference 1926.303 6.7 Cords, leads, and hoses shall be kept at least 7 feet (2.10 meters) off the ground or whatever height is necessary to be protected from traffic and tripping hazards. 7.0 COMPRESSED GASES NOTE: Using, transporting, moving and storing compressed gas cylinders must meet requirements of OSHA (29 CFR 1926.350). 7.1 Compressed gas cylinders shall be secured in an upright position at all times. Location of cylinder storage areas must be approved by the Esso Safety Representative. 7.2 When transporting, moving, and storing cylinders, valve protection caps shall be in place and secured. 7.3 Cylinders shall not be hoisted by magnets or choker slings. Valve protection caps shall not be used for hoisting cylinders. 7.4 Cylinders shall be protected from overhead work at all times. 7.5 Cylinders shall be kept away from sparks, hot slag, and flames or adequately protected. E:\GPS-008.DOC Specification No.: GPS-008 | Pae 1e1 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 7.6 Cylinders shall not be placed where they can become part of an electrical circuit. 7.7 Cylinders shall be labeled as to the nature of their contents. 7.8 Oxygen cylinders in storage shall be separated from fuel gas cylinders or combustible materials a minimum of 20 feet (6.0 meters), or by a noncombustible barrier at least 5 feet (2.0 meters) high having a fire resistant rating of at least one-half hour. Empty cylinders shall be separated as above from full cylinders and stored with like cylinders. 7.9 "No Smoking" signs shall be posted at storage areas and signs shall clearly indicate contents of cylinders. 7.10 Anti-flash back arresters shall be installed on all oxygen and acetylene cylinders. 8.0 SCAFFOLDS 8.1 Footings or anchorage for any scaffold shall be sound, rigid, and capable of carrying the maximum intended load without settling or displacement. 8.2 No unstable objects such as concrete blocks shall be used to support scaffolds or planks. 8.3 Any part of a scaffold weakened or damaged shall be repaired or replaced immediately. 8.4 All scaffold planking shall be free of knots and cracks and shall completely cover the work plafform. 8.5 Scaffold planks shall be tight, cleated at both ends, or overlapped a minimum of 12 inches (0.385 meters) and nailed or bolted to prevent movement. Overlaps are to occur directly above scaffold supports. 8.6 Safe access shall be provided to the scaffold plafform. Specifically, a safe means of access from a ladder to the plafform shall be provided. E:\GPS-008.DOC Specification No.: GPS-008 I Page12of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 8.7 Scaffolds shall be equipped with a top rail made of timber not less than 2-by- 4 inches (or equivalent strength), 42 inches (1. 1 meters) high; a 21 inch (0.50 meters) high midrail, made of timber not less than 1-by-6 inches (or equivalent strength); and toeboards shall be installed on all open sides and ends of scaffold platforms 10 or more feet (3.0 meters) above the ground floor. 8.8 Scaffolding not adaptable to guard rails shall require the use of safety hamesses with the shock absorbing lanyard attached to a secure substantial object. 8.9 Mobile scaffolding casters shall be secured and locked prior to mounting. 8.10 No personnel or loose material shall be on mobile scaffold when it is being relocated. 8.11 Contractor's employees working swing stages, boatswain chairs, floats, suspended scaffolds, and needle beam scaffolds, etc., shall wear safety hamesses with shock absorbing lanyards attached to an independent lifeline. 8.12 A proper scaffold inspection and tagging system shall be maintained. 8.13 Quick mounted scaffold is prohibited. NOTE: Intemational standards may differ but as a minimum the construction for scaffolding shall meet the requirements of OSHA (29 CFR 1926.451). 9.0 JOB SITE TRANSPORTATION RULES 9.1 Drivers of motor vehicles shall have valid drivers license and be instructed to exercise judgment as well as observe posted speed limits. Much slower speeds are necessary in congested areas. 9.2 All Contractor entrance and exit routes shall be adequately marked. 9.3 Pedestrians and bicycles have ROW over motorized traffic. 9.4 Homs shall be used when passing and at all blind corners. EAGPS-008.DOC Specification No.: GPS-008 | Page13of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 9.5 Established hand signals or tum signals are to be used. 9.6 Reckless driving or other non-observance of these instructions will be cause for withdrawal of driving privileges on the project. 9.7 No two-wheel motorized vehicles are allowed on the job site. Any All Terrain Vehicle used on the job site shall be four-wheeled, not three-wheeled. 10.0 CRANES, DERRICKS AND LIFTING EQUIPMENT Contractor is required to develop a Crane and Lifting Equipment Procedure that will address as a minimum OSHA 1926.550 through 1926.556 and Esso Onshore Crane/Lifting Safety Management Guidelines. This procedure must address all equipment to be used by Contractor or Sub-contractors including the following: - Typical Onshore Crane/Lifting Safety Management System - Personnel, responsibilities, training, certification * Equipment, inspection, maintenance 3 Safety checklist X Erection and climbing * Operating procedures and precautions * Crane log * Prequalification process * Lift planning process (job safety analysis) * Critical load and site factors and plan * Lift evaluation form * Permits * Third party crane responsibility * Performance monitoring tools * Safe start-up, shutting down and securing equipment * Crane suspended personnel basket requirements * Hazard awareness checklist * Moving crane checklist and procedure * Pick and carry checklist * Use of crane rating charts * Mobile crane selection summary * Specific inspection items * Electronic operating aids * Agreed objectives E:\GPS-008.DOC | Specification No.: GPS-008 Page14of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS * Resource responsible and accountable for implementation * Assessment of improvement * Management of change * Measurement process 10.1 All cranes and derricks shall be certified as being in safe operating condition by Contractor prior to using the crane or derrick on the job site. This certification shall be maintained by Contractor and made available to Esso upon request. 10.2 All crane operators shall be properly licensed and certified by a competent person who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees and who has authorization to take prompt corrective measures to eliminate them. Certification records shall be maintained on job site by Contractor and made available to Esso on request. 10.3 The swing radius of cranes shall be barricaded for protection of pinch points. The load line will be secured when work has been stopped or at the end of day shifts. 10.4 Hand signals prescribed by local standards shall be posted at an operators station. 10.5 Manufacturers specifications shall be observed by Contractor. 10.6 Equipment shall not be operated where any of the equipment or the load will come within 15 feet (5.0 meters) of electrical distribution or transmission lines without a "close proximity work permit" approved by site management. 10.7 Contractors employees shall not ride the headache ball, hook, or load being handled by the crane. 10.8 Equipment shall not be lubricated while in use. 10.9 Rated load capabilities, recommended operating speeds, special hazard waming, specific hand signal diagram, and special instructions shall be visible to the operator while at the control station. E:\GPS-008. DOC L Specification No.: GPS-008 | Page15of 40 Rev. 1i 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 10.10 Contractors employees shall not be allowed to work under the load of cranes. Tag lines shall be used on all loads. Special caution should be used in concrete bucket operations. 10.11 All equipment carrying loads shall have an Employee walk ahead of the load to watch for hazards and blind spots. All loads being walked shall have tag line attached to control load. 10.12 All crane and lifting equipment shall be operated and meet all requirements outlined in the ECI Onshore Crane/Lifting Safety Management Guide 11.0 CRANE SPECIFICS 11.1 A complete and documented annual inspection must be performed before the machine arrives on site and an annual inspection must be performed thereafter. Cranes and derricks shall be inspected prior to use and at monthly intervals. Records shall be maintained on job site of these inspections by Contractor and copies shall be made available to Esso. 11.2 The complete annual inspection of all structural crane parts including NDE test of welded joints by a competent person qualified in accordance with OSHA 29 CFR Part 1926.32 (f), should be fumished by the crane supplier prior to the erection of the crane. A copy of this inspection and NDE test results should be kept on site. The inspection should also be certified by a registered engineer. 11.3 Cranes shall have flags or other indicators on the jib identifying the working load radius to the operator. 11.4 Cranes shall have limiting devices to control: Trolley travel at both ends of the jib Anti-two blocking/overhoisting limit device Operating radius in accordance with lifted load Pressures in hydraulic or pneumatic circuits 11.5 Load limiting devices, and acceleration and deceleration limiters, when provided, shall be installed in enclosures that can be locked or sealed to inhibit unauthorized tampering. E:\GPS-008.DOC | Specification No.: GPS-008 | Page 16 of 40 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 11.6 The operator should be trained, experienced and qualified for the operation of that specific make and model of crane. Operator experience documentation should be provided by the utilizing Contractor even if it is using a Sub-contractor on site. 11.7 The manufacturer's operator manual shall be kept with the crane while it is on site. 11.8 A wind velocity indicating device shall be mounted at or near the top of the crane. A velocity readout shall be provided at the operator's station in the cab and a visible or audible alarm shall be triggered in the cab and at remote control stations when the preset wind velocity has been exceeded. 11.9 Regular inspections and maintenance of the cranes should be conducted and performed in accordance with the manufacturer's specifications and ANSI Standards. 11.10 All crane operations shall be performed in accordance with ANSI B30.3- 1984 and ANSI B30.4-1981. 11.11 Personnel lifts can only be made with approved personnel platforms, and then only after a successful, unoccupied, trial proof test. A trial lift of at least 200% of the plafform's rated capacity, for at least five minutes time, must be performed immediately prior to placing personnel on the plafform. A competent person must inspect the crane, platform, rigging, and ground after the trial lift. Any deficiencies noted will be corrected, and another proof test shall be conducted, until the proof testing requirements are satisfied. A trial lift will be performed each time the crane is moved. 12.0 EQUIPMENT AND MOTOR VEHICLES, AND MARINE OPERATIONS NOTE: All motor vehicles, mechanical equipment, and marine operations shall be maintained and operated in accordance to OSHA 1926.600 - 1926.606. 12.1 All equipment must be inspected daily before use by Contractor's operator. Formal inspections must also be made by Contractor at 30 day intervals with proper documentation maintained at the job site. Copies shall be made available to Esso upon request. 12.2 All hoisting equipment shall have a certified inspection report within the previous 12 months. E:\GPS-008.DOC | Specification No.: GPS-008 | Page17of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 12.3 All hoisting equipment shall have manufacturers operators manual in the cab at all times along with load and radius charts. 12.4 Defective equipment shall be repaired or removed from service immediately. 12.5 All rubber-tired, materials handling equipment (MHE), self-propelled scrapers, rubber-tired front-end loaders, rubber-tired bulldozers, wheeled- type agricultural and industrial tractors, crawler-type loaders and motor graders shall be equipped with roll-over protective structures and seat belts as per manufacturer specification. 12.6 All Contractors operators of construction equipment should be properly licensed and certified by a competent person. Copies of the certifications shall be maintained on the job site by Contractor and made available to Esso upon request. 12.7 All equipment with an obstructed view to the rear must have a reverse signal alarm audible above the surrounding noise level or a flagman. 12.8 All cracked and broken glass shall be replaced before bringing vehicles on the job site. If glass is broken or damaged on job site and if damage is severe enough to cause a potential safety problem, the machine shall be stopped until such damage has been repaired. 12.9 Vehicles used to transport employees shall have seats firmly secured and adequate for the number of employees to be carried and all passengers should be properly seated or firmly seated in the bed of the truck. Standing or kneeling on the back of moving vehicles is prohibited. 12.10 Locations for storage of all fuels, lubricants, starting fluids, etc., shall be reviewed by Esso prior to use by Contractor for storage. 13.0 ELECTRICAL 13.1 All electrical work, insulation, and wire capacities shall be in accordance with the pertinent provisions of the permanent facilities codes and requirements. 13.2 Contractor shall develop a ground fault program in accordance with OSHA Requirements and approved Esso requirements. E:\GPS-008.DOC | Specification No.: GPS-008 PageISof 40 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 13.3 Contractor shall develop and implement a lockout/tagout procedure in accordance to OSHA 1926.461 and 1926.417 and strictly adhere to the use of this procedure. The Esso Safety Representative will verify adherence to the procedure on a regular basis. 13.4 All temporary power panels shall have covers installed at all times. All open or exposed breaker spaces shall be adequately covered. 14.0 LADDERS AND STAIRWAYS NOTE: Ladders and stairways shall meet OSHA 1926.1050 through 1926.1060 requirements. 14.1 The use of ladders with broken or missing rungs or steps, broken or split rails or other defective construction is prohibited. 14.2 Ladders shall extend no less than 36 inches (1.0 meter) above landing and be secured to prevent displacement. 14.3 Portable ladders must be equipped with safety shoes. 14.4 Wooden ladders shall not be painted. 14.5 Metal or conductive ladders shall not be used. 14.6 Ladders must be inspected daily before use, formal inspections must also be made by Contractor at 30 day intervals and documented. 14.7 Ladders shall be used for means of access only and shall not be used in place of scaffold. 14.8 Every flight of stairs having four or more risers shall be equipped with standard stair railings. Stairs are not to be used until risers, landings, and railings are securely installed. Treads will be poured as soon as possible where poured treads apply. 14.9 Debris and other loose materials shall not be allowed to accumulate in stairwells. E:\GPS-008.DOC | Specification No.: GPS-008 | Page19of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 15.0 FLOOR AND WALL OPENINGS AND STAIRWAYS 15.1 Floor and wall openings shall be guarded by a standard guardrail, midrail, and toeboard, or adequately covered. 15.2 Guardrail must be of sufficient strength to support 200 pounds of force when applied at midspan of the guardrail parallel with the floor and perpendicular to the guardrail. 15.3 Covers must be adequately secured to prevent displacement and have "Danger" signs attached identifying the hazard. 16.0 EXCAVATIONS AND TRENCHING Trenching and excavations must meet the minimum requirement of OSHA 1926.650 - 1926.652. 16.1 A competent person must be designated and trained in soil classification and the recognition of trenching and excavation hazards and be present during all trenching operations. 16.2 Appropriate documentation to meet trenching and excavation standards is to be kept on site. 16.3 Prior to opening any excavation or trench, Contractor must notify Esso. In addition, Contractor shall contact any other necessary personnel to determine whether underground installations, e.g., sewer, telephone, fuel, electric lines, etc., may be encountered and where they are located. Excavation permits shall be required. 16.4 Excavations and trenches shall be inspected by a competent person daily and after every rainfall to determine if they are safe. 16.5 All banks 5 feet (1.5 meters) high or more shall be sloped to 34-degrees unless soil is analyzed by a competent person allowing a greater slope angle, or shall be adequately shored. 16.6 Ladders or steps shall be provided and secured in all trenches 4 feet (1.2 meters) or more in depth. Ladders or steps shall be located to require no more than 25 feet (7.5 meters) of lateral travel before having access to egress and shall extend 3 feet (90 centimeters) above the top of the trench E:\GPS-008.DOC Specification No.: GPS-008 I Page 20 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS bank. This requirement shall be in affect any time personnel are in trench or excavation. 16.7 Material excavated shall be stored at least 2 feet (0.6 meters) from the edge of the excavation or trench and shall be shored to prevent material from falling into the excavation. 16.8 All trenches and excavations shall be properly barricaded to prevent persons from walking into them. Pipeline trench will be excluded except in areas of road crossing and public access. 16.9 All walkways or ramps crossing over excavations shall be securely fastened and equipped with standard guardrail. 17.0 STEEL ERECTION NOTE: Reference OSHA 1926.750 - 1926.752. 17.1 At no time shall there be more than 4 floors or 48 feet (14.63 meters) of unfinished bolting or welding above the foundation or uppermost permanently secured floors. 17.2 A temporary and/or permanent floor shall be maintained within two stories or 30 feet (9.14 meters) whichever is less, below and directly under that portion of each tier of beams on which any work is being performed. 17.3 Planking or metal decking in temporary floors shall be of proper strength and thickness to carry the working load. Decking shall be secured to prevent movement. 17.4 Standard guardrail and toeboards shall be installed around open sides of permanent floors. During structural steel assembly, a safety railing (cable) of one-half inch diameter shall be installed approximately 42 inches high, recessed into the interior of floor around all temporary floors. 17.5 Where fall distances exceed 25 feet (7.62 meters) safety nets shall be provided, if the use of scaffolds, ladders, catch plafforms, or safety belts with lanyards attached to lifelines or other substantial objects is impractical. 17.6 Tag lines shall be used to control all loads. E:\GPS-008.DOC | Specification No.: GPS-008 | Page 21 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 17.7 Containers shall be provided for storing or carrying bolts or rivets. When bolts, drift pins, or rivet heads are being removed, a means shall be provided to prevent accidental displacement. Tools shall be provided and lanyards to prevent falling. 17.8 During the final placing of solid web structural members, the load shall not be released from the hoisting line until the members are secured with not less than two bolts, or equivalent, at each connection. 17.9 Contractor shall not allow any of Contractors employees to walk the steel. Contractors employees must be tied off and "coon/straddle" the beam until safety cables are provided to which employees shall tie off. Two shock absorbing lanyards will be needed to ensure 100% tie-off. 17.10 A safe means of access to the level being worked shall be maintained. Climbing and sliding columns are prohibited and are not considered safe access. 18.0 CONFINED AREAS OR SPACES 18.1 Contractor shall develop an entry procedure to be used when Contractors employees are required to enter confined areas or spaces. Such areas include storage tanks, process vessels, bins, boilers, ventilation or exhaust ducts, sewers, underground utility vaults, tunnels, pipelines, open-topped pits, basements, and temporary wood framing covered with plastic. 18.2 All of Contractors employees who are required to enter confined areas or spaces shall be instructed as to the nature of hazards involved, necessary precautions to be taken and in the use of protective and emergency equipment required. 18.3 Before Contractors employees are permitted entry into any confined area or space, the atmosphere within the space shall be tested to determine the oxygen level and concentrations of flammable vapors, gases, toxic contaminants. Contractor needing access to the confined area shall fumish the testing equipment and a person competent in the use of the testing equipment. 18.4 When welding, cutting, or heating in confined areas or spaces, ventilation shall be provided. When sufficient ventilation cannot be provided without E:\GPS-008.DOC Specification No.: GPS-008 | Page 22 of 40 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS blocking the means of access, Contractor's employees shall be protected by air line respirators and an employee of Contractor shall be stationed outside the confined area to maintain communication with those working within and to aid them in an emergency. Stand-by employee should be trained in emergency procedures. NOTE: As a minimum all confined spaces must meet or exceed OSHA (CFR 1910.146). Esso maintains the right to increase requirement if necessary. 19.0 HOUSEKEEPING NOTE: VERY IMPORTANT Contractor will be required to keep all work areas under tight housekeeping requirements at all times. It is not acceptable to wait until the end of the day to start clean-up. Housekeeping must be maintained throughout the day. NO EXCEPTIONS to this requirement. Contractor will be monitored on a regular basis by Esso personnel. Project Management will be held accountable. 19.1 During the course of construction, all debris and scrap material shall be kept away from the work area. 19.2 Containers shall be provided by Contractor for the collection and separation of waste, trash, oily and used rags and other refuse. Metal (dumpster type) containers must be used and emptied promptly. 19.3 Garbage and other waste shall be disposed of at frequent and regular intervals. 19.4 Contractor shall notify Esso of any hazardous waste it will generate during performance of the work. Contractor has the direct responsibility of maintaining proper storage of these wastes while on site. Reference Coordination Procedure Section 30, Environmental Management and Contractor's Waste Management Plan. 19.5 Contractor shall not bury, burn, nor in any way dispose of a chemical on the job site without permission from Esso. 19.6 Materials and supplies shall be stored in locations which will not block accessways, and be arranged to permit easy cleaning of the area. In areas E:\GPS-008.DOC Specification No.: GPS-00a Page 23of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS where equipment might drip oil or cause other damage to the ground or floor's surface, a protective cover of heavy gauge, flame resistant, oil-proof sheeting shall be provided between the equipment and the ground or floor surface sheeting so that no oil or grease contacts the soil or concrete. This requirement is applicable to finished and unfinished floors and ground. 19.7 All hoses, cables, extension cords, and similar materials shall be located, arranged, and grouped so that they will not block any accessway and will permit easy cleaning and maintenance. E:\GPS-008.DOC | Specification No.: GPS-008 Page 24 of 40 Rev. 1 29 Oct97 1 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 20.0 CONTRACTOR RESPONSIBILITIES - MEDICAL SERVICES NOTE: Refer to Coordination Procedure Section 23, Occupational Health, Medical Facilities and Sanitation. Contractors have the following responsibilities: * Ensure the availability of professional medical service personnel. * Prior to commencement of work, make provisions for prompt medical attention. • Ensure that first aid supplies approved by the Esso consulting physician shall be easily accessible when required. * Provide adequate number of first aid kits and supplies approved by the Esso consulting physician. First aid kits shall be in a weatherproof container with individual sealed packages for each type of item. Contents of the first aid kits shall be checked by Contractor before being sent to the job site and at least weekly during performance of the work to ensure that expended items are replaced. * Provide proper equipment for prompt transportation of the injured person to a treatment area. * Emergency numbers of the physicians, medivac and ambulance shall be conspicuously posted. * Complete and retain on file all employer's "First Report of Injury" and OSHA Form 200, or intemational equivalent, and provide Esso a copy on request. * A daily record shall be kept on all employees requiring first aid treatment. * Contractor shall make every effort to work with medical advisor with the best interest of the employee to propose and provide "altemative" or "restricted" work duty when possible. E:\GPS-008.DOC | Specification No.: GPS-008 Page 25 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 21.0 MINOR CUTS, SCRATCHES, BRUISES, ETC. - FIRST AID 21.1 Each occupational illness or injury shall be reported immediately by Contractor's employee to Contractor or the designated safety representative. 21.2 All personal injuries and illnesses treated or reported shall be recorded on a daily First Aid Log. This log should contain such information as employee's name, badge number, foreman, nature and cause of injury, treatment administered, date, time, and first aid attendant's name. Contractor shall maintain such data for Esso's review. 21.3 Contractor's should treat the injured employee as often as necessary to ensure complete recovery or the decision is made to seek medical treatment elsewhere. 22.0 MEDICAL CASES NOT REQUIRING EVACUATION 22.1 Contact Contractor's first aid attendant or designated safety representative regarding medical cases not normally requiring evacuation such as minor lacerations, embedded foreign bodies in eye, minor sprains, strains, etc. 22.2 Contractor must provide proper equipment for prompt transportation for the injured person to an infirmary/trauma area. 22.3 A representative of Contractor should always accompany the injured employee to the medical facility and remain at the facility until the employee is ready to return. Contractor has the responsibility to ensure that the employee has or receives necessary forms, e.g., authorization slips, retum to work notices, etc. 22.4 If it is necessary for Contractor's medical personnel to accompany the injured employee, provisions must be made by Contractor to have other qualified medical personnel available, properly trained and certified in first aid, to render first aid during the absence of the regular physician, physician's assistant, or nurse. E:\GPS-008.DOC Specification No.: GPS-008 Page 26 of 40 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 22.5 If it is necessary to call the medical facility to be utilized, this call should be made by the designated Contractor representative while the injured employee is being transported. 22.6 If the employee is able to return to the job site the same day, they should bring with them a statement from the attending physician containing such information as date, employee's name, date they are able to return to work, regular or restricted duty, date they are to return to doctor, diagnosis, signature and address of doctor. If the injured employee is unable to return to the job site the same day, the employee who transported them should immediately notify Contractor Management and Esso. 22.7 Contractor should designate one employee to keep files on all medical cases and retain all medical statements in this file. 23.0 MEDICAL CASES REQUIRING EVACUATION SERVICE Examples of medical cases requiring evacuating services include severe head injuries, amputations, heart attacks, etc. Should evacuation service be necessary, the following procedures should be taken immediately: 1. Contact Contractor or nearest employee properly trained and certified in first aid. 2. While first aid is being administered, arrange necessary transportation. 3. While the injured employee is being transported, Contractor should contact the medical facility. 4. One designated Contractor representative should accompany the injured employee to the medical facility and remain at the facility until final diagnosis and other relevant information is obtained. E:\GPS-008.DOC | Specification No.: GPS-008 Pape 27 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 24.0 CONTRACTOR I SUB-CONTRACTOR DOCUMENTATION Safety Performance Notebook Directions for completing each section of the Safety Performance Notebook follow. Table of Contents Sections to be maintained and updated in the Table of Contents. Section I - Contractor/Sub-contractor Information Include the following: * Names, addresses, phone numbers, etc., of company office and officers * Worker's Compensation carrier/employer liability insurer, contact name and address with phone number * Certificate of Insurance - current * Union information (if any), local number and name - Safety Performance Information = Awards received past two years, if any OSHA 200 Log (or equivalent) - Previous three years Section 11 - Contractor/ Sub-contractor Safety Information Include the following: * Copy of safety program * New hire and visitor orientation * Toolbox meeting reports * Written HazCom program or local equivalent * Training program * Written respirator program (if required) * Other job specific inspection programs * Self assessment audit program EAGPS-008.DOC | Specification No.: GPS-008 Page28of 40 Rev. I 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS Section III - Contractor/Sub-contractor Safety Performance Include the following: * Injury performance records * First Aid Log (Monthly) * First Report of Injury * Accident Investigation Reports * Current Year OSHA 200 Log (or equivalent) * Area safety inspection reports to include corrective action taken (monthly) - Copies of Monthly Report Form SR-1 - Incentive awards and safety goals obtained Section IV - Safety Enforcement Actions Include the following: - Letters written to obtain compliance - Reports documenting removal of employees from the project for safety reasons * Work stoppages to correct safety problems Section V - Site Specific Safety Requirements Include the following applicable procedures must be approved by Esso Safety Representative. Section VI -Perform Accident/injury or Near Miss Investigation(s) Using Esso Format Contractor is required to develop procedures for incident investigation and reporting of incidents, near-misses and unsafe acts. Contractor must ensure that: * A system is in place for reporting, investigating, analyzing and documenting safety, health, environmental and regulatory compliance incidents and significant near-misses. * Criteria and scope for reporting and review of incidents and near-misses are defined in specific incident reporting guidelines issued by ECI Headquarters, Affiliate Headquarters and the unit. E:\GPS-008.DOC Specification No.: GPS-008 Page 29 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS * Responsibility is assigned for ensuring that such systems are in place and followed and that qualified personnel conduct investigations and analyses. * Procedures exist for determining the scope and manner of investigations of incidents and significant near-misses based upon actual or potential consequences and legal considerations. * Procedures exist for determining when medical evaluation or alcohol and drug testing is conducted in connection with an incident. * A program is in place to encourage near-miss reporting. • The role of human factors and the effectiveness of Systems are analyzed in investigations. * Findings are retained, periodically analyzed to determine where improvements to practices, standards, procedures or management systems are warranted and used as a basis for improvement. - An information base of incidents and near-misses, including root causes and corrective actions, is maintained to assist in identification of improvements and stewardship. * Identified improvements are reviewed with Esso management and decisions implemented. This information is required for all lost time injuries, potential or near-miss incidents and fatalities. The following should be included in the report: * Use information from Contractor's Safety Performance Notebook for backup information that may be required * Toolbox topics covered relative to the incident * Safety Orientation, Root Cause Analysis, Accident Investigation Report, etc. * Contractor is required to make immediate notification to Esso E:\GPS-008.DOC | Specification No.: GPS-008 Page 30 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 25.0 REQUIRED ACCIDENTIINJURY INFORMATION 25.1 The following information is required in the event of Contractor/Sub- contractor injury, lost time accident or fatality: * Contractor is required to make immediate notification to Esso. * Contractor/Sub-contractor names and addresses of project management (project manager, construction manager, safety manager, services manager, etc.) , Contractor or Sub-contractor safety orientation and evidence showing that individual completed orientation when they started work. * The Sub-contractor or Contractor safety program. Highlight the appropriate part dealing with the referenced accident. * The Sub-contractor or Contractor work procedures on the work under way when the incident occurred. * Contractor safety meetings and/or any Sub-contractor safety meetings (if related) * Contractor safety inspections and/or Sub-contractor safety inspection(s) (highlight related items) * Letters to Esso or Sub-contractor regarding safety * Contractor/Sub-contractor safety performance on the project, Contractor/ Sub-contractor safety performance as a company for the year on their OSHA 200 Log or equivalent * Contractor/Sub-contractor incidence rate of lost workday cases and OSHA 200 Log or equivalent for the company * Copy of Contractor's insurance certificates or information on the carrier and a letter from Sub-contractor's insurance carrier referencing the Sub- contractor's safety. * Site Safety Regulations that pertain to the incident * Any site safety topics that pertain to the incident * Any site safety programs that pertain to the incident * Treating physician's name, hospital, or clinic address, etc., and a doctor's statement on the injury the employee received (also return to work notice) E:\GPS-008.DOC | Specification No.: GPS-008 Page 31 of 40 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS * Medical records on the employee where possible * Job description for Contractor/Sub-contractor employee (may include specific references to safety) * Signed statements from designated Contractor/Sub-contractor representatives conceming the employee's safety performance on the job or safety requirements for the job, etc. * Sketches of the accident area Exact name, address, and project location of foreman or supervisor. Also, what they were doing when the accident occurred. How far away from the area, etc. * Signed statements from all witnesses with names and addresses * Safety violations issued, if any * Coroner's report, if fatality * Full accident investigation * First Report of Injury * Accident and area photographs * Copy of any procedure(s) - lockout, tagout, danger tags, etc. * Any client related report or training information * Any union training program including safety that the particular employee's union has at its locale - A statement from Contractor regarding any type of useful information that could be used in defense * Documentation reflecting monies expended by Contractor to have safety problems corrected, e.g., housekeeping, handrails, and floor hole covers, installations, etc. * Specifically list enforcement measures taken by Contractor to enforce compliance of Sub-contractors with project safety procedures, e.g., withholding payment of invoices, instances of the Esso or Contractor stopping work until safety hazards are corrected. E:\GPS-008.DOC | Specification No.: GPS008 Page 32 of 40 Rev. 1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 26.0 SAFETY RULES AND PROCEDURES Contractor shall: * Develop Safety Rules and Procedures. * Identify applicable procedures for work to be performed. * Write Site Specific Safety Procedure Manual incorporating applicable safety procedures. * Issue Project Safety Procedures manual to Esso. 27.0 HAZARDOUS MATERIALS PROCESS AND/OR CHEMICALS Contractor shall: * Contractor is required to develop a system that will ensure that information on potential hazards of materials involved in operations is kept current and, based on assessed risk to personnel, exposures are monitored, proper protection measures are communicated, and pertinent health data are recorded and reviewed. - Contractor must develop and maintain documentation for purchase, transport, handling, storage and disposal of hazardous materials that are clearly defined for each location. * Contractor must develop a system that will ensure that hazardous materials are not accepted from suppliers without associated material safety data sheets (M.S.D.S.). * All personnel are provided with information about the potential hazards of the materials they are exposed to in their work. * Contractor must ensure that exposure limits to hazardous materials are set. Based on assessed risk, personnel exposure is monitored, recorded, and subject to periodic review by Esso management. * If there are potential hazards of products produced in operations, the Contractor must ensure that information on potential hazards associated with products and guidance to enable proper handling, use, and disposed is documented and communicated. * Identify processes and chemicals that may expose employees to potentially hazardous conditions either in routine work or in emergency conditions. E:XGPS-008.DOC Specification No.: GPS-008 Page 33 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS * Current documentation is available and on location of each Material Safety Data Sheets (MSDS) on all chemicals and hazardous materials to which employees may be exposed and that a system is in place to maintain its currency. * Contractor must develop a procedure to inventory hazardous materials kept on site that is regularly reviewed. 28.0 FIRE SUPPRESSION EQUIPMENT Reference Coordination Procedure Section 24, Fire Protection & Fire Fighting. * Determine the areas that require fire extinguishers. * Determine the type, size, and number of fire extinguishers needed. * Locate a vendor to service and re-charge fire extinguishers. * Ensure all mobile equipment is equipped with a fire extinguisher. 29.0 SAFETY & PERSONNEL PROTECTIVE EQUIPMENT Contractor shall: * Identify the quantity and types of personnel protective and safety equipment needed. * Develop a schedule to ensure the timely delivery of equipment and materials to the project. E:\GPS-008.DOC Specification No.: GPS-008 | Page34of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 30.0 WORK PERMIT REQUIREMENTS Contractor is required to develop a system that addresses simuitaneous operations and interfaces between Contractors working at a common site. Contractors permit system shall incorporate checks and authorizations that are consistent with risk or hazards. The contractor must ensure the following requirements are developed into the Permit system: * The work permit system contains prestart checks to ensure that: the work site is safe, that necessary isolations are performed and verified, necessary bypasses are performed, the work does not unsafely interfere with other work in progress or planned, those affected by the work are informed of the work and possible affects upon their work, and appropriate communications and coordination meetings are held and key decisions recorded. * Work permits are approved for a specific duration. * Senior operations management is responsible for ensuring an effective work permit system and verifying that it is used correctly. * The type of work and work conditions that are managed with work permits are defined for each site based on the risks involved. * Each Work Permit has a description of the work and details specific precautions to protect personnel, environment and equipment from potential hazards. * Permit procedures require closeout checks to be performed at completion of the work to ensure that: the work was performed satisfactorily, isolations and bypasses are restored, work place and process are retumed to a safe condition, and completion of work is communicated to affected personnel. * The authority to approve and closeout work permits is clearly designated and documented at each site. * All personnel issuing or using work permits are trained in the application of work permit procedures. * Work permit system and training effectiveness is audited periodically and results documented. Work permits and records are retained to facilitate this assessment. Develop project specific work permit procedures complying with Esso Permitting Policies and local requirements. E:\GPS-008.DOC I Specification No.: GPS-D08 Page 35 of 40 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - Lock and Tag - Field Instrument - Cold Work (if required) - Welding on Live Equipment or Platforms - Hot Work - Excavations - Confined Space - Electrical Hot Work - Crane Lift - Suspended Work Baskets 31.0 EMERGENCY PROCEDURES * Develop project wide evacuation plan in coordination with Esso * Identify emergency assembly areas and evacuation routes in coordination with Esso * Develop maps illustrating these areas - Identify emergency services/equipment that may be required: ambulance, medivac, fire truck, trauma packs, personnel retrieval systems * Publish a listing of emergency communication systems - Ensure that numbers are posted in appropriate areas of the project * Severe weather procedures * Post designations of assembly areas E:\GPS-008.DOC | Specification No.: GPS-008 | Page 36 of 40 Rev. 1 29 Oct 97 | ESSO EXPLORATION & PRODUCTION CHAD INC. .e GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 32.0 MEDICAL SERVICES * Establish medical evacuation procedures and determine when to use local or foreign medical facilities based on extent of injury. * Establish which off-site medical facilities are to be utilized by local employees for job related injuries or illnesses. * Identify who will conduct employee physicals. NOTE: Refer to Coordination Procedure Section 23, Occupational Health, Medical Facilities and Sanitation. 33.0 SAFETY INCENTIVE PROGRAMS Develop programs to recognize employees and crews for superior safety performance. 34.0 SAFETY MEETINGS Contractor must endure that adequate meetings are held to proactively address associated hazards. As a minimum the Contractor must: * Establish weekly safety meetings for all project supervisors. • Establish an attendance tracking system. * Establish a weekly Tool Box Meetings for craft. * All safety meetings must be documented. 35.0 SUB-CONTRACTORS * All sub-contractors have the same safety requirements as Contractors. * Develop site specific sub-contractor safety policies and procedures. * Ensure safety policies/procedures and qualification packages are included in proposals and contracts. 36.0 DISCIPLINARY PROCEDURES Develop disciplinary procedures to address safety violations that are fair and consistent throughout. E:\GPS-008.DO0 C Specification No.: GPS-008 Page 37 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 37.0 PROJECT SAFETY GOALS * Develop project safety goals to include no lost time accidents/injuries. * Develop project safety objections that include those established by Esso. 38.0 PURPOSE STATEMENT Provide purpose statement for project stating: * Management commitment * Intent, goals and objectives - Expectation for support from all site personnel 39.0 SAFETY TRAINING Develop a written and verbal orientation and comprehension test for new employees and sub-contract personnel to include: * Description of project . Management commitment * Project safety goals and philosophy * Site specific rules * Evacuation alarms and procedures e Areas requiring special protective clothing * Accident and injury reporting procedures * Permitting procedures * Disciplinary procedures for safety violations * Reporting unsafe acts or conditions * Tool Box Meetings * Hazard communication * Chemical screening EAGPS-08.DOC | Specification No.: GPS-008 Page 38 of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. e GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 40.0 SPECIAL PROJECTS ISSUES * Identify Safety Training and Comprehension Programs to educate site personnel on applicable safety management programs. - Hazard Communication/MSDS - Employee Medical Records - Confined Space Entry - Respiratory Protection/Fit Test - Hole Watch - Fire Watch - Emergency Procedures - Opening and Blinding - Lock and Tag - Process Overviews/Hazards - Industrial Hygiene * Identify Safety Training and Comprehension Programs for craft specific tasks. - Basic Rigging/Hand Signals - Bloodborne Pathogens and first aid associated with (MSDS) - Power Actuated Tools (certification) - Electrical safe work practices - Fire extinguishers portable - Fork Lift Operator - Drum handling - Compressed gas/cylinder handling - Control of hazardous energy - Assured equipment grounding - Accident prevention signs, tags, barricades - Hearing conservation/protection - Personal protective equipment - Trenching and excavation - Welding/cutting/brazing - Overhead Gantry Cranes - Safe handling and storage of explosives * Selection of computer programming to be used to track training. E:\GPS-008.DOC Specification No.: GPS-008 Page 39 of 40 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS 41.0 CRAFT SPECIFIC CERTIFICATION PROGRAMS * Required craft certification programs. - Power Actuated Tools - Crane Operator - Motorized EquipmentWehicles - Fork Lift Operator - Aerial Lift - Material and Personnel Hoist * Develop training programs and comprehension tests for supervisors. - Permits - General safety responsibility, liability - Incident/Accident investigations 42.0 SAFETY AUDITSIINSPECTION PROGRAMS * Establish weekly audit format. - Develop auditing schedule. - Identify site specific inspection programs. E:\GPS-008.DOC Specification No.: GPS-008 Page40of 40 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX I APPENDIX I MONTHLY SAFETY SUMMARY REPORT (INSTRUCTIONS) GENERAL The success of the Esso's Accident Prevention Program can only be determined by developing standard records that collect accurate data. This procedure is detailed in OSHA 29 CFR 1904 (OSHA Record Keeping Guidelines). The data to be collected is described on Form SR-1 "Monthly Safety Summary Report" (Table 1). This information will be catalogued throughout the year on a calendar year basis. Contractors/Sub-contractors are required to complete and summit the Monthly Safety Summary Report to the Esso safety representative each and every month. This report is due on the 5th workday of each month. It is very important that this information is accurate and on time. SAFETY SUMMARY REPORT INSTRUCTIONS Section A: Project Information 1. Enter your assigned project number. 2. Enter the reporting month. 3. Enter Contractor name. 4. Enter Sub-Contractor name. 5. Enter reporting period. Example: FROM 27, July 1996 TO 31, August 1996. E:\GPS-008.DOC Specification No.: GPS-008| Page -i1 of 4 Rev. [ I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS APPENDIX I Section B: Project Site Statistics CraftVSalaried 1. Enter project location. 2. Enter the number of employee workhours for the reporting period (month and year to date). 3. Enter any one-time treatment and subsequent observation of minor work- related scratches, cuts, bums, splinters, etc. not requiring medical care. However, a physician or registered professional may administer the first aid. 4. Enter any work-related loss of consciousness, injury or illness requiring more than first aid treatment by a physician, dentist, surgeon or registered medical personnel, nurse or paramedic under the standing order of a physician. 5. Enter all work-related deaths and illnesses, and those work-related injuries which result in: loss of consciousness, restriction of work or motion, transfer to another job, or require medical treatment beyond first aid. 6. Enter all work related cases resulting in an individual being unable to return to work on any of the individual's scheduled workshifts after the day of injury or illness. 7. Fornula for calculating recordable incidence rate is as follows: Take the number of recordable cases x 200,000 . by the number of hours worked. Use this same formula for both month and year to date calculations. 8. Formula for calculating Lost-Time Case incidence rate is as follows: Take the number of Lost-Time Cases x 200,000 - by the number of hours worked. Use this same formula for both month and year to date calculations. 9. Formula for calculating employee hours per doctor case is as follows: Take the number of hours worked * the number of doctor cases. Use this same formula for both month and year to date calculations. E:\GPS-08.DOC Specification No.: GPS-008 Page 1-2 of 4 Rev. 1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS APPENDIX I Section C: Project Site Statistics 1. Enter number of hours since last Lost-Time injury. 2. Enter any business related auto/transportation accident. 3. Enter number of safety meetings held during the reporting period. 4. Enter the number of events that did not cause injury or fatality but that could reasonably have developed into a more serious incident. 5. Enter the number of documented safety walkthroughs conducted during the reporting period. Section D: Project Site Statistics Approval 1. Signature is required by the individual preparing the document. 2. Enter the date the document was prepared. 3. Signature is required by the project manager in charge or designee. 4. Enter the date of project manager or designee approval. E:\GPS-008.DOC Specification No.: GPS-008 Page 1-3 of 4 Rev. 1 29 Oct 97 ESSO EXPLORATION AND PRODUCTION CHAD DEVELOPMENT PROJECT MONTHLY SAFETY SUMMARY REPORT (TABLE 1) SECTION A: CONTRACTORS PROJECT INFORMATION (1) PROJECT NO: (2) MONTH: (3) REPORTING PERIOD 06 864000 FROM: SECTION B: PROJECT SITE STATISTICS Employee Hours First-Aid Doctor Cases Recordable Lost-Time Incidence Rate Incidence Rate Employee Hours Contractor Cases Cases Cases Rec. Cases Lost-Time Cases Per Doctor Case (21 (3) (4) (5) (6) (7) (8) (9) (1) Month YTD Month YTD Month YTD Month YTD Month YTD Month YTD Month YTD Month YTD ~TOTAL:__ _ _ _ ___ _ __ _ _ _ _ ___ _ _ __ _ _ _ _ SECTION C: PROJECT SITE STATISTICS SECTION D: PROJECT STATISTICS APPROVAL (1) (2) ()Poject Manager or() Prepared by Date: Dsignee:Dae Conitracto -Project to date hours Notes: EAWGS.o800DO S cfction No.: GPS-008 .~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ae14o ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX II APPENDIX II ALCOHOL AND DRUG USE POLICY FOR CONTRACTORS CONTRACTOR ALCOHOL AND DRUG USE POLICY General Requirements It is not ESSO's intent to establish alcohol and drug use policies for Contractors. However, ESSO requires contractors to have and enforce a program which is consistent with providing an alcohol and drug free workplace, which includes appropriate substance abuse testing programs, and is commensurate with the level of risk in the work being performed. Contractors performing work on ESSO owned or controlled premises, in direct contact with ESSO operations, or of a nature which could cause ESSO to be held responsible for losses suffered as a result of actions on the part of Contractor or its employees, hereby agree to observe the following: * Prohibit the misuse of legitimate drugs, or the use, possession, distribution, or sale of illicit or unprescribed controlled drugs or paraphemalia. * Prohibit the possession, use, distribution, or sale of alcoholic beverages while on ESSO owned or controlled property. * Recognize the right of ESSO to conduct unannounced searches of Contractor's property on ESSO premises. * Recognize the right of ESSO to require Contractor to remove employees where cause exists to suspect alcohol or drug use. * Prohibit the use of alcohol in all camp facilities. * Prohibit Contractor's employees from being unfit for work as a result of the use of alcohol or drugs. * Test as required by these guidelines. * Comply with all applicable federal, state, and local laws and regulations. E:\GPS-008.DOC Specification No.: GPS-008 Page o1-1 of 7 Rev. 1I1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX 11 * Contractors are required to pre-access test all security and food service personnel. * All Expatriates are required to have pre-access alcohol and drug testing prior to arriving on job site. Categories of Contractor Positions The following categories of contractor positions are identified for purposes of testing and other requirements under these guidelines: Safety-Sensitive Contractor Positions ESSO management will determine those contractor jobs that are safety-sensitive. In general, these jobs have the following characteristics: * a high exposure to catastrophic operational incident, * the person performing the job has a direct role in operations where failure could result in serious harm to public or employee well-being, or of a nature which could cause ESSO to be held responsible for losses or actions of the Contractor. Jobs Comparable to Designated Positions ESSO management will determine those contractor jobs that are comparable to ESSO designated positions. In general, these jobs have the following characteristics: * a high exposure to a catastrophic operational incident, * the person performing the job has a direct role in operations where failure could result in serious harm to public or employee well-being, and * no direct or very limited supervision is available to provide operational checks. E:\GPS-008.DOC Specification No.: GPS008 Page 11-2 of 7 Rev. I 29 Oct 97 ESSO.EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX II Jobs Comparable to Specified Executives Contractor management will determine those Contractor jobs that are comparable to ESSO specified executive positions. In general, these are senior executives of a major company organization or are managers responsible for an organization which also has jobs comparable to designated positions. Contractor Substance Abuse Testing The following substance abuse testing requirements shall apply for Contractors working in ESSO operations: S Suspicion of Alcohol or Drug Use/For-Cause Testing. All Contractors will be required to remove any of their employees from performing work for ESSO any time there is suspicion of alcohol or drug use or possession. In addition, for-cause alcohol and drug tests are required after a safety incident where there exists a basis to suspect involvement of alcohol or drug use. In cases involving contractors working in safety- sensitive positions or jobs comparable to designated positions, for-cause alcohol and drug tests are required after any safety incident. In any of the above cases, the Contractor's employee may only be considered for retum to work after Contractor certifies as a result of a negative alcohol and drug for-cause test, conducted immediately following the incident, that said employee was in compliance with these guidelines. * Pre-Access Testing. No Contractor employees working in safety-sensitive positions or in jobs comparable to ESSO designated positions will be permitted to perform work for ESSO unless Contractor certifies such employee has passed a pre-access alcohol and drug test within the 12 month period immediately prior to commencing such work. Any category of alcohol and drug test conducted during this period as part of the Contractor's substance abuse program that meets the standards of these guidelines may be used to satisfy this requirement. E:\GPS-008.DOC Specification No.: GPS-008 Page 1-3 of 7 j Rev. I 29Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX 11 * Random Testing. Contractors working in jobs comparable to ESSO designated positions, as determined by ESSO, are required to be continuously subject to an unannounced random alcohol and drug testing program while they are performing work for ESSO. Specified executives of contracting firms are encouraged to be subject to the same random alcohol and drug testing program to demonstrate their commitment to a substance-free workplace. Any employee of a Contractor who tests positive in any of these alcohol and drug tests, or refuses to be tested, must be removed from the ESSO site and any ESSO work. Test Administration (U.S.) Alcohol and drug testing will be accomplished in accordance with applicable laws and will be the sole responsibility of the Contractors. While the U.S. Department of Transportation (DOT) requirements for substances to be tested, testing frequency, and threshold levels set acceptable standards, Contractors that do not have an existing program should be strongly encouraged to adopt ESSO's alcohol and drug testing standards. ESSO will not administer any alcohol or drug tests for Contractor's employees. Contractor will be responsible to select a lab certified to conduct such testing under a recognized certification program. Retaining the test results is the responsibility of Contractor. Test Administration (Non-U.S.) Alcohol and drug testing will be accomplished in accordance with applicable local/national laws. Contractor should normally be responsible for the testing of its workers. Non-U.S. Contractors that do not have an existing program should be strongly encouraged to adopt ESSO's full panel of drugs, thresholds and testing standards. Contractor shall submit threshold levels to ESSO for review and approval. E:\GPS-008.DOC Specification No.: GPS-008 Page 11-4 of 7 Rev. 1 29 Oct97 ESSO.EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX 11 Test Administration Alcohol and drug testing will be accomplished in accordance with applicable laws and will be the sole responsibility of Contractor. ESSO will not administer any drug or alcohol tests for a Contractor's employee. The testing standards to be used insofar as drugs tested for, screening levels, and confirmatory levels, must, at a minimum, meet the U.S. Department of Transportation (DOT) requirements for drugs other than alcohol, and ESSO's requirements for alcohol. In addition, ESSO requires testing that complies with ESSO standards for all drug substances including alcohol for Contractor personnel assigned in positions comparable to ESSO's "designated" positions. DOT and ESSO's standard substances to be tested for and their detection levels are listed in Table 1. Testing may be performed at any certified laboratory. Handling of test results (e.g., retention, release, etc.) is the Contractor's responsibility. Audit Contractor is hereby advised that ESSO may, at ESSO's discretion, conduct an unannounced audit of Contractor's drug and alcohol program to verify that: C Contractor's policy and its enforcement comply with these guidelines. * Tests are being conducted as required. * Procedures for handling samples establish a chain of custody that prevents tampering and switching of samples. * The laboratory being used conducts tests using a scientifically sound method and is certified to perform such tests. * The use of prescribed drugs is not reported as test positives to management. A medical review of test results is desirable. Sub-contractors Contractors must require their sub-contractors to maintain a Drug and Alcohol Policy in keeping with the requirements herein or require them to abide by ESSO's drug and alcohol policy guidelines to the same degree that Contractor must comply. E:\GPS-008.DOC Specificaton No.: GPS-008 Page 11-5 of 7 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX II Exception Contractor's employees who are subject to substance abuse testing requirements who are hired on short notice may, at ESSO management discretion, be permitted to begin work pending the required substance abuse testing certification. However, such certification must be received by ESSO with seven (7) calendar days from the first date Contractor's employees commence performing work. This exception does not apply to Contractor designated positions. Certain other exceptions may be granted by ESSO management and will be handled on a case-by-case basis. Non-Compliance If it is determined that a Contractor is not complying with the provisions as described herein, action may be taken by ESSO to remove Contractor from a particular job and to note such non-compliance when considering Contractor for future jobs. The action taken will be at the discretion of ESSO management. Contractor Designated Positions (refer to the notes on the following page) At a minimum, Contractor designated positions shall include the Project Manager, Construction Manager, Crane Operators, Aircraft Pilots, Boat Captains and Truck Drivers hauling volatile products. Contractor shall nominate other designated positions that generally fall within the guidelines of the notes on the following page. Random Testing Guidelines (for designated positions only) Fifty percent (50%) of Contractor employees who perform work or relieve others who perform work in designated positions must be "random" tested every 12 months. Such testing is in addition to ESSO's requirement that all employees be subject to a pre- employment drug/alcohol test. E:\GPS-008.DOC Specification No.: GPS-008 Page 116 of 7 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX 11 Note: The following guidelines should be used to determine if a specific job falls into the designated position category: 1. the position involves work that provides a high exposure to a catastrophic operational incident, or 2. the position involves a direct role in operations, where a failure could result in serious harm to public or employee well-being, or 3. the position involves working either with no or very limited direct ESSO supervision for operational oversight. E:\GPS-008.DOC Specification No.: GPS-008 Page 11-7 of 7 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX II[ APPENDIX Ill JOB SAFETY ANALYSIS (THE JSA) What is JSA? It is a simple procedure used to review a specific workplan in order to uncover hazards and then eliminate or remove them before the work is started. Why Should We Perform a JSA? * Develops worker involvement in planning and doing the work in an efficient, safe manner. - Promotes teamwork and communication. - Facilitates training. i Focuses workers on their specific responsibilities. D Identifies improvements to established job methods. When is a JSA Performed? Every time new work is started or a workplan changes. Who Performs the JSA? A JSA is performed by a unit of workers, supervisors and inspectors assigned to a specific work activity. How is a JSA Performed? Step 1 - Select the work team and then the job to be completed. Step 2 - Categorize the job into a series of steps. Step 3 - Identify the hazards associated with each step. Step 4 - Decide on actions necessary to eliminate, reduce or control a hazard that could lead to an accident. K:\08837-787.012\FINAL DOCUMENTATION\Final English\EMPChad Vol 2 - Specification No.: GPS-008 Specs\GPS-008.DOC Page II-1 of 6 Rev. 1 290ct 97. ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX III BENEFITS DERIVED FROM THE JSA PROCESS Direct Indirect * Identifies Hazards * Builds Teams * Improves Safety * Increases Involvement in Safety Process * Defines Job Procedures * Develops Sense of Ownership * Provides Training Commitment * Demonstrates Management's Commitment e Increases Awareness * Builds Self-Esteem e Reduces Accidents * Increases Job Satisfaction * Ensures OSHA Compliance * Empowers those Performing the Work * Generates Safety Initiatives * Recognizes the Expert * Facilitates Continuous Improvement * Encourages Participation - Productivity * Shows that each team member is Important - Quality * Makes Safety More Fun * Shows Safety is Priority * Demonstrates that We Care * Encourages Thinking Before Acting * Increases Understanding of Expectations* * Indicates Commitment * * Provides Exposure to OSHA Standards * * Identifies Skill Levels * * Identifies "Safety Leader" in Work Group * *= Specific to Contractors KA08837-787.012TFINAL DOCUMENTATION\Final English\EMPChad Vol 2 - Specification No.: GPS-008 Specs\GPS-008.DOC Page 111-2 of 6 Rev. I 29 Oct 97i ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX IlI JOB SAFETY ANALYSIS Purpose: To identify the hazards or potential hazards associated with each step of a particular job and develop actions to eliminate, reduce or control the hazard. To develop a thought process that can be used even when a written Job Safety Analysis is not performed. How to Develop a JSA (see sample JSA form attached) 1. Categorize or identify job into observable steps. 2. Identify potential hazards associated with each step. 3. Specify control measures for hazards identified. Prioritv of Job Selection for JSA 1. Frequency of job. (Note: Less frequent jobs are normally considered more critical.) 2. Magnitude of job. 3. Potential of accident/injury. 4. Newly established jobs. 5. Jobs requiring procedure modification. Benefits 1. Reinforces thought process employees should use, whether written or not. 2. Helps plan selected jobs. 3. Helps critique a job. 4. Acts as a training aid for employees in training. 5. Standardizes safe work practices. 6. Perpetuates hazard control awareness. K:\08837-787.012\F1NAL DOCUMENTATIONFinal English\EMPChad Vol 2 -Speafication No.: GPS-008 Specs\GPS-008.DOC Page 111-3 of 6 Rev. 1 |29 Oct 97 ESSO. EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX III HOW TO COMPLETE A JOB SAFETY ANALYSIS (JSA) The JSA should be completed in accordance with the following guidelines: Keep sentences short. A. Sequence of Basic Job Steps Categorize job into observable steps. Try not to be too general or too detailed. * If job is complex, break into several tasks; prepare a JSA for each task. * Begin with active verb, e.g. disconnect, check, invert, assemble, etc. * Number each step. B. Potential Hazards Identify possible hazards associated with each step. List opposite job step. - Consider potential accident causes (e.g., strain, sprain, cut, slip, fall, etc.). * Consider environmental hazards (e.g., vapors, gases, heat, noise, etc.). C. Recommended Safe Procedure Develop solutions for each potential hazard. List opposite hazard. * Present controls (e.g., ventilate, isolate, allow to cool, secure, etc.) K:\08837-787.012\FINAL DOCUMENTATIONFinal English\EMPChad Vol 2 - Specification No.: GPS-008 Specs\GPS-008.DOC Page 111-4 of 6 Rev. 1 29 Oct 97 JOB SAFETY ANALYSIS (Project) Job: Date: New Revised Page of Title of Person Who Does Job: Supervisor (Title) Analysis By: Yard Worker Field Location Safety Manual Rules That reviewed By: Apply Required/Recommended (Circle One) Approved By: Personal Protective Equipment !. _ A. Sequence of Basic Job Steps B. Potential Hazards C. Recommended Safe Procedure K,\08837-787.012kFlNAL DOCUMENTATIONTFinal English\EIVPChad Vol 2 - SpecS\GPS-008.D0C Specification No.: GPS-008 Page1l1-5 of 6 Rev. 1 29 Oct 97 JOB SAFETY ANALYSIS Job: Sharpening& Replacing a Rotary Mower Page of Date: New Revised Blade L I Job Safety Analysis Training Guide Title of Person Who Supervisor: Analysis By: Does Job: Operator & Supervisor Department: Maintenance Group Section: Outdoor Beautification Reviewed By: Safety Department Required/Recommended (Circle One) Approved By: Personal Protective Equipment: Cut Rqsistant Gloves and Safety Glasses Manager A. Sequence of Basic Job Steps Bl Potential Hazards C. Recommended Safe Procedure 1. Disconnect spark plug wire. 1. Striking against (SA) housing. 1. Do not use excessive force. Allow 2. Remove Fuel. Burn hand. mower to cool. 3. Invert mower. 2. Spillage - Fire, inhalation. 2. Ventilation, no smoking, proper 4. Remove dull blade. 3. Caught between (CB) container. Flush away with water (if 5. Check for bent blade. Dropping on foot, etc. necessary). 6. Sharpen and balance dull blade. Spilling fuel. 3. Tip properly. (Grass catcher chute up). 7. Reassemble blade to mower. Overexertion. Wear gloves. Be sure cap is tight. 8. return mower to cutting position. 4. Knuckles SA blades. Lift properly, use leg muscles. 9. reconnect spark plug wire. 5. Cuts while handling blade. 4. Securely block blade-wooden block. 10. Add fuel. 6. Cutting hand, SA vise. Use proper size SOCKET WRENCH 7. SA blade or housing. WITH EXTENDER. Wear gloves. 8. Overexertion. 5. Wear gloves. Caught between 6. Wear gloves. AVOID CONTACT 9. None WITH SHARP BLADE. 10. Fire 7. Block blade. WEAR GLOVES. AVOID CONTACT WITH SHARP BLADE. 8. Use leg muscles, not back. Wear gloves. 9. None 10.Ventilate, no smoking, proper container. K:\08837-787.012\FINAL DOCUMENTATION\Final English\EMPChad Vol 2 - SpeOs\GPS-OD8.DOC Sp ecification Nof. GPS-008 Page 111-6 of 6 _Rev. 1 9c9 ESSO EXPLORATION & PRODUCTION CHAD INC. e GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX IV APPENDIX IV HOW TO CONDUCT A ROOT CAUSE ANALYSIS 1. Organize an Investigation Team. Team should consist of at least: * CONTRACTOR's Supervisor * CONTRACTOR's Safety Advisor * An ESSO's representative * Another member of work force (experienced/knowledgeable in process involved) - Injured party (if possible) 2. Interview those involved. Review with interviewees the purpose of Root Cause Analysis: * To enable us to take action to prevent a similar occurrence. * Root Cause Analysis does not blame people. Investigation Team will review data to uncover the system or process that needs to be corrected. 3. Interview promptly while memories are fresh and not influenced by discussions with others. * Team should interview witnesses one at a time. (One-on-one interviews may sometimes be needed, use judgment.) * Conduct interviews with minimal interruptions. Ask open-ended questions. * Ask questions to clarify. Ensure that witness's account and Team's understanding agree. * Encourage witnesses to contact one of the Investigation Team members later if they remember additional facts. 4. Visit accident scene. Collect any physical objects (e.g. tools, clothing, equipment, etc.). 5. Complete pages 1 through 3 of this form. * Re-interview if questions arise during this process. 6. Mail completed original form and supplemental photos, sketches, materials, etc., to ESSO. 7. Get concurrence on "Root Actions" from Field Superintendent and enter corrective steps in standard operating procedures. E:\GPS-008.DOC Specification No.: GPS-008 Page IV-1 of 5 Rev. 1I | 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX IV ROOT CAUSE ANALYSIS * INJURY: NEAR MISS: PROPERTY DAMAGE: * DATE OF EVENT: . TIME: a.m./p.m. WORK LOCATION: * WEATHER: _ * PERSON INJURED OR NEARLY INJURED: * EXTENT OF INJURY: * EXACT LOCATION OF EVENT: * DESCRIBE WHAT HAPPENED: * WHAT TASK DID THE INJURED PERSON PERFORM PRIOR TO THE ACCIDENT/NEAR MISS? * DAYS WORKED IN FIELD: * DAYS SINCE LAST DAY OFF: * HOW MUCH EXPERIENCE DID THIS PERSON HAVE IN THE WORK BEING DONE? E:\GPS-008.DOC Specification No.: GPS-008| Page IV-2 of 5 Rev. 1 |_29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX IV GETTING TO ROOT CAUSE Step 1 Use this listing as an aid in identifying the factors that contributed to this event. Do not be limited by areas listed, add items as needed. Check all that apply. PROCEDURES IN A HURRY * None Developed * Verbally Implied Need * Developed-Not Followed * Employee Perceived Need * Developed-Not Trained * Friendly Competition * Developed-Not Understood * Due to External Factors * Developed-Not Accurate * Workload too Heavy * Developed-Unable to Follow * Lack of Teamwork * * Taking Shortcuts HAZARD TRAINING * Created by Man * Recent Training Provided for - Created by Extemal Factors Specific Task * Documented but Not Repaired - * Circumstances Not Addressed - Unidentified in Training - Identified but Accepted * Tool Used Incorrectly * Repaired but Deficient Repair _ * Conditions Changed Without Proper _ e * Communication * Lack of Documentation COMMUNICATION ___ * Insufficient Planning * Breakdown in Communication Between Workers * Breakdown in Communication Between Workers and Supervisor * Breakdown in Communication Between Work Teams * Confusion After Communication EAGPS-008.DOC Specification No.: GPS-008| Page IV-3 of 5 Rev. 1 | 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX IV Step 1 (Cont'd) FACILITIES/EQUIPMENT OTHER FACTORS * Faulty Equipment * Weather/Temperature * Poor Design * Working Long Hours * Corrosion/Wear * Physical Overexertion * Ergonomic Factors * Personal Protective Equipment * Improper Body Position Step 2 From areas identified above, choose the major cause: Procedures In a Hurry Hazard ____ Facilities/Equipment Training Communication ___ tOther Step 3 Major Root Cause (Identified in Step 2) * Why did this happen? * Why? * Why? e Why? E:\GPS-008.DOC Specifcation No.: GPS-008 Page IV-4 of 5 | Rev. 1I | 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX IV Step 3 (Cont'd) * Corrective Steps for Subcauses * To ensure elimination of hazards identified above, corrective steps handled as follows: - Added to standard operating procedures? Yes N/A (explain) - Other follow-up method used (specify) - Other follow-up method used (specify) WE HAVE REVIEWED THE INFORMATION AND BELIEVE THE ROOT CAUSE HAS BEEN DETERMINED. INVESTIGATION COMMITTEE: INJURED PARTY: (Supervisor) (Name) (Safety Leader) (Member) (Member) REPORT REVIEWED FIELD SUPERVISOR/STAFF MANAGER: OPERATIONS SUPERINTENDENT: OPERATIONS MANAGER: Report received by Safety Coordinator and distributed to other locations. INITIAL: DATE: E:\GPS-008.DOC Specification No.: GPS-0G8 Page IV-5 of 5 Rev. | 29 ct9 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX V APPENDIX V SUB-CONTRACTOR SAFETY QUESTIONNAIRE Contractor is required to provide ESSO with the detailed information requested below for each sub-contractor, in the format indicated, concerning the sub- contractor's safety performance for approval by ESSO prior to award of sub- contract: *Total Number of Hours worked for each of the last 3 years. 1993 1994 1995 *Total Number of Employees who worked for your company during each of the last 3 years. 1993 1994 1995 *Number of Lost Workday Cases incurred at your work sites over the last 3 years. (Refer to Definitions/Criteria following) 1993 1994 1995 *Number of Recordable Cases incurred at your work sites over the last 3 years. (Refer to Definitions/Criteria following) 1993 1994 1995 *List the Number of Fatalities your company has experienced over the last 3 years. 1993 1994 1995 Submit an explanation for each Fatality that occurred along with company's action plan to prevent recurrence. EAGPS-008.DOC Specification No.: GPS-008 Page IV-1 of 4 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX V *List the Number of Safety Violations/Fines your company has received over the past 3 years. 1993 1994 1995 Briefly describe the nature of these Violations/Fines, including the jurisdiction/entity imposing them. *Does your company have a written Safety and Health Plan? O YESOZ NO If yes, provide a copy of the Table of Contents of the Plan as part of your response. *Does your company incorporate the use of Professional Safety Personnel at your construction job site? Cl YESZI NO Explain their functions within your company. *Indicate the frequency of safety meetings conducted by your company. /per week/per mo./per year E:\GPS-008.DOC Specification No.: GPS-038 | Page IV-2 of 4 FRev. 1 1 29Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX V Definitions/Criteria Relatina to Safety Information Requested: Lost Workday Case: These cases are generally the most serious non-fatal injuries and illnesses. They occur when the injured or ill employee experiences days away from the work site as a direct result of a work site injury or illness. In these situations, the injured or ill employee is affected to such an extent that (1) days must be taken off from the job for medical treatment or recuperation; or (2) the employee is unable to perform their normal job duties over a normal work shift. Injuries and illnesses are not considered lost workday cases unless they affect the employee beyond the day of injury or onset of illness. Recordable Iniurv: Recordable injuries are those which involve specific medical treatment, loss of consciousness, restriction of work or motion, or transfer to another job. A work-related injury must involve at least one of these four conditions before it is deemed recordable. Minor injuries requiring only first aid treatment are not recordable. The following are generally considered medical treatment which involve criteria for a recordable accident: * Treatment of INFECTION * Application of ANTISEPTICS during second or subsequent visit to medical personnel * Treatment of SECOND OR THIRD DEGREE BURN(S) * Application of SUTURES (stitches) * Application of BUTTERFLY ADHESIVE DRESSING(S) or STERI STRIP(S) in lieu of sutures * Removal of FOREIGN BODIES EMBEDDED IN EYE * Removal of FOREIGN BODIES FROM WOUND: if procedure is COMPLICATED because of depth of embedment, size, or location * Use of PRESCRIPTION MEDICATIONS (except a single dose administered on first visit for minor injury or discomfort) * Use of hot or cold SOAKING THERAPY during second or subsequent visit to medical personnel * Application of hot or cold COMPRESS(ES) during second or subsequent visit to medical personnel * CUTTING AWAY DEAD SKIN (surgical debridement) E:\GPS-008.DOC Specification No.: GPS-008 Page IV-3 of 4 Rev. I1 |29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR PROJECT SAFETY REQUIREMENTS - APPENDIX V * Application of HEAT THERAPY during second or subsequent visit to medical personnel • Use of WHIRLPOOL BATH THERAPY during second or subsequent visit to medical personnel * POSITIVE X-RAY DIAGNOSIS (fractures, broken bones, etc.) * ADMISSION TO A HOSPITAL or equivalent medical facility FOR TREATMENT The following are generally considered first aid treatment (e.g., one-time treatment and subsequent observation of minor injuries) and should not be recorded if the work- related injury does not involve loss of consciousness, restriction of work or motion, or transfer to another job: - Application of ANTISEPTICS during first visit to medical personnel Treatment of FIRST DEGREE BURN(S) Application of BANDAGE(S) during any visit to medical personnel U Use of ELASTIC BANDAGE(S) during first visit to medical personnel * Removal of FOREIGN BODIES NOT EMBEDDED IN EYE if only irrigation is required * Removal of FOREIGN BODIES FROM WOUND; if procedure is UNCOMPLICATED, and is, for example, by tweezers or other simple technique * Use of NON-PRESCRIPTION MEDICATIONS AND administration of single dose of PRESCRIPTION MEDICATION on first visit for minor injury or discomfort * SOAKING THERAPY on initial visit to medical personnel or removal of bandages by SOAKING * Application of hot or cold COMPRESS(ES) during first visit to medical personnel * Application of OINTMENTS to abrasions to prevent drying or cracking * Application of HEAT THERAPY during first visit to medical personnel * Use of WHIRLPOOL BATH THERAPY during first visit to medical personnel * NEGATIVE X-RAY DIAGNOSIS * OBSERVATION of injury during visit to medical personnel E:\GPS-008.DOC Specification No.: GPS 008 Page IV4 of 4 Rev. 1 2Ot9 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN GPS-010 Rev. Date No. of Prepared Reviewed Approved Revision Details No. N Pages By By O 19 Nov 96 26 CKO PRS DJS Issued for Proposals 1 >3L*; 1 in 26 MEF DJS Issued for EMP R:\1obo5285\sarosdm\userdirXgps-010.doc I Specification No.: GPS-010 Page lof 26 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIRCATION FOR HEALTH PLAN TABLE OF CONTENTS 1. Introduction .....................................................4 1.1. Health Services Delivery I Primary Medical Care .....................................4 1.2. Public and Environmental Health / Infectious Diseases ........................... 5 1.3. Occupational Health ....................................................7 2. Purpose and Requirements of Contractor Health Plan ................. ................ 7 2.1. Purpose .....................................................7 2.2. Health Plan Requirements ......................................................7 2.3. Contractor Organization and Management of the Health Plan ......... ....... 9 3. Esso Policies .................................................... 10 4. Health Resources, Roles, and Responsibilities ........................................... 10 4.1. Historical Perspective .............................10 4.2. Health Care Providers ......................... 11 4.2.1. Basic Skills Requirements ................................ 11 4.2.2. Additional Skills Requirements / Roles ................................ 11 4.2.3. Hiring Criteria ................................ 12 4.3. Medical Coverage and Service ............................. 14 4.3.1. Medical Care Coverage ............................... 14 4.3.2. On-Site Medical Services .15 4.3.3. Health Clinic at Main Camps .15 4.4. Emergency Response .16 4.5. Reportng Requirements .17 5. Health Facilities ............................... 18 5.1. Mobile Clinics Supporting Pipeline Construction .18 5.2. Communication Between Camps, Work Sites, and Mobile Clinics . 18 5.3. First Aid Equipment ..................................................... 19 5.4. Sick Bay .................................................... 19 6. Preventive Health Measures and Personnel Screening .19 6.1. Fitness Evaluaions .19 6.1.1. Project Staff .19 6.1.2. Catering and Household Staff .20 6.1.3. Other Specific Employee Groups .20 6.1.4. Exclusionary Physical Conditions .20 6.2. Public and Environmental Health Control ................................ 21 7. Occupational Health: Chemical and Physical Agent Exposure .22 8. Training ...... . 24 R:MoboS285\sarosdmXuserdir\gps-O1O.doc | SpeafficationNo.: GPS-O10 Page2of 26 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN List of Tables Table 1. Staffing Levels and Camp Size .16 Table 2. Potential Chemical and Physical Agent Exposures .24 Table 3. Training Areas .26 Table 4. Other Frequent Vector-Borne Diseases in West Africa .11-3 Appendices Appendix I - Public and Environmental Health Control Program. 1-1 Appendix II - Vector-Bome Diseases Other than Malaria. 11-1 Appendix IlI - Medical Service Guidelines for Remote Sites. 111-1 R:\obo528S\sarosdm\userdiregps-010.doc Specification No.: GPS-010 Page 3 of 26 Rev. I 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN 1. Introduction The Chad Development and Export System Project presents several potential health risks to the work force. The Project's activities, in turn, may also present potential health risks to the local population. Most of the more serious, non- industrial risks to Project staff and Contractors come from living and operating in a developing country and its tropical environment. A well-managed health plan working in concert with project safety and management personnel can control risks. Managing project-related risks requires continuous focus on preventing infectious and vector-borne diseases, occupational illnesses and injuries, and public health issues (including environmental sanitation). This specification provides requirements that are to be included in Contractor's Health Plan, as well as guidance on the issues to be considered. 1.1. Health Services Delivery I Primary Medical Care Although specific health risks are associated with the specific work environment (see Occupational Health) and with operating in an African country (see Public and Environmental Health/Infectious Diseases), persons will need access to routine medical services. This should include provision and delivery of routine day-to-day medical care and assessment, triage and treatment of urgent and emergency care. Contractor is responsible for providing and delivering routine day-to-day medical care; as well as assessing and treating urgent and emergency cases. Emergency medical risks include serious single and multiple injuries; and severe and complicated, often drug-resistant malaria or other infectious diseases, which require the following in-country capabilities: * first aid * triage * specific medical treatment * immediate stabilization * possible in-country surgery or intensive * medical evacuation, as needed care medical treatment at larger, better (1) equipped diagnostic and treatment * suitably skilled medical facilities personnel (1) Medevacs are frequently multi-staged and each stage requires unique equipment and skills. For example, initially a patient may be transported by light aircraft and then later by commercial aircraft to complete the evacuation. R:MoboS285\sarosdm\userdir\gps-010.doc | Specification No.: GPS-010 | Paw 4 of 26 Rev.1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN Contractor must emphasize feasible preventive means, early detection and surveillance, rapid clinical and laboratory diagnosis of disease, and quality first-aid for injury. Advanced medical and rescue team members should respond to emergency medical situations in the field, obtaining stabilization in the field, and then continually assessing dynamic patient parameters from first contact until the patient is: * treated and released, or * hospitalized at the camp or an associated larger facility, or * evacuated to an advanced care center, when appropriate. A guiding principle is to stabilize the patient (ongoing and frequent reassessment) while arranging efficient medevac contingencies. Weather, aircraft availability, and numerous other factors dictate the need for ensuring that more than one route/method of medevac is available and on stand-by status whenever feasible. 1.2. Public and Environmental Health I Infectious Diseases Chad and Cameroon are seasonally tropical African environments with limited public health measures for infectious disease control. Persons working or living in Chad and Cameroon may be exposed to serious, life-threatening infectious and vector-bome diseases (such as malaria). Suitable preventive measures require both professional medical attention (industrial hygiene (IH) and public health measures) and individual attention (immunizations; malaria prophylaxis/suppression; food and water; safetyllH precautions). Contractor is responsible for primary, secondary, and tertiary prevention measures for infectious and communicable diseases that are prevalent in the Project environment. These diseases may be vector-, food-, water- and air-borne intestinal illness; or transmitted from person-to-person. - Primary prevention is achieved by eliminating the sources of infection (e.g. breeding grounds), preventing transmission or by protecting people from becoming infected (e.g., immunizations). Source and transmission control measures are accomplished through engineering design procedures. - Secondary prevention is recognizing and treating symptoms early or recognizing other indicators of potenfial disease based on acfive screening and medical surveillance programs. Secondary prevention programs reduce the prevalence (baseline) of disease and disability. R:UJobo5285\sarosdm\userdirigps-010.doc Specification No- GPS-010 | Pae S of 26 Rev. 1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - Tertiary prevention is early treatment and aggressive medical management of disease to minimize disability and productivity loss. Appendices I and If present information on many of the vector-bome diseases that are expected in the project environment. Primary, secondary & tertiary prevention measures for vector-bome diseases should be presented in Contractors Health Plan. Particular emphasis should be placed on strategies that emphasize primary prevention through engineering design practices particularly in areas such as housing, water supply, sanitation, and construction. Contractor's approaches and management of infectious and vector-bome diseases should be consistent with the World Health Organization's (WHO's) Panel of Experts on Environmental Management for vector-control (PEEM) Areas of concem related to construction activities are primarily, but not exclusively, focused on the transportation sector. Specific areas where engineering design practices can have significant impacts on vector-bome diseases are: 1) drainage and construction practices for roads (malaria mosquito breeding sites); 2) design of river and stream crossings affecting stream flow rates (black fly breeding sites); 3) migration of burrowing rodents into temporary labor camps secondary to pipeline construction activities (spread of visceral leishmaniasis and other hemorrhagic fevers); and 4) disturbances of existing mosquito habitat in rainforest environments (yellow fever and other hemorrhagic fevers). Vector-bome disease transmission rates can also be impacted by activities and behaviors within work camps: 1) use of non-secured water supplies for bathing (bilharzia); 2) contamination of water supplies (diarrheal diseases); 3) contamination of food sources (salmonella, shigella, cholera); and 4) temporary crowding conditions that promote the spread of respiratory disease outbreaks. Minimum requirements for camp facilities and catering services are provided in GPS-001 (Camps and Facilities) and GPS-002 (Catering Services), respecfively. Minimum standards for potable water treatment are provided in GPS-003 (Potable Water Treatment, Storage and Distribution (Temporary)). Finally, Contractor's Health Plan must address sexually transmitted diseases (STDs) such as HIV, chlamydia, chancroid, herpes, gonorrhea and syphilis. Primary, secondary and tertiary prevention strategies for STDs should be clearly presented since the prevention and spread of STDs is an important issue. R. Uobo5285\sarosdm\userdir\gps-010.doc Specificafion No.: GPS-010 i Paqe 6 of 26 Rev. I | 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN 1.3. Occupational Health Preventing, controlling, and treating work-related injuries and illnesses is achieved by coordinating industrial hygiene and occupational medicine programs. Occupational and industrial risks come from the nature and complexity of the Project and include workplace accidents, motor vehicle accident-related injuries, and adverse exposures (e.g., noise, dust, heat, fumes). Staff will also reside at construction and operations sites, which presents public health and environmental sanitation issues similar to a small community. 2. Purpose and Requirements of Contractor Health Plan 2.1. Purpose This Health Plan establishes the criteria and technical basis for designing and implementing Contractor's Health Plan for the Chad Development and Export System Project This Health Plan specifies the medical and IH components of.the Project. Specifications and guidelines are detailed in areas that do not strongly depend on Project designs and execution plans. As the Project becomes more defined and in-country conditions change, this plan may be revised. The criteria in this Health Plan and the accompanying Appendix IlIl entitled 'Medical Service Guidelines for Remote Sitese are intended to help Contractor develop measures to correct known and potental health concerns in and out of the workplace in Chad and Cameroon. Such measures specify medical facilities, equipment, procedures, and indicate the appropriate numbers of suitable medical and IH professionals to staff clinics and to support Contractors, Sub-Contractors, and Esso employees in various Project locations. 2.2. Health Plan Requirements Contractor's Health Plan shall, at a minimum consist of the following elements: Provide and maintain on-site clinical services to include: - routine and emergency care - medical stabilization and evacuabon - industrial hygiene - first-aid training R:.\obo5285\sarosdm\userdir\gps-010.doc Specification No.: GPS-10 | Page 7 of 26 Rev. 1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - medical screening (pre- - immunizations and preventive health employment) and medical surveillance protocols - community liaison - public health including vector-bome and other infectious diseases - surgical intervention (in selected remote-site larger operations) * Comply with all applicable laws and regulations and apply reasonable and responsible standards where laws and regulations do not exist. * Ensure food and drinking water sanitation. a Develop appropriate programs to educate, assist, advise, and direct appropriate personnel regarding IH and environmental hygiene (e.g., noise, emissions, illness-preventive measures, manual material lifting and sanitation) and document the training. * Assess a worker's baseline and ongoing (surveillance) medical fitness for work: Provide appropriate pre-employment medical histories, physical examinations and laboratory testing including evaluating staff health, providing high standards of clinical care and helping staff prevent illness and injury. * Vaccinate expatriate and local work force and provide preventive health education and training. * Develop and provide infectious and vector control programs, as well as, closely coordinate other medical and safety activities. * Respond to emergencies. The physician/medicflH roles are critical to a site's emergency response plans (including casualties). Contractor shall design, implement, debrief, and critique practice "drills" on a regular basis and after each emergency. Contractor shall communicate the results of this plan regularly. * Maintain records and reports for periodic review. This effort should monitor and document effective medical management of employee illnesses and injuries, and systematically monitor the health of the aggregate workforce. The proposed epidemiologic approach for obtaining, analyzing and presenting illness and injury data should be presented. Particular emphasis should be R:\oboS285\sarosdmluserdir\gps-01 .doc Specification No.: GPS-010 Page 8 of 26 Rev. 1 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN placed on calculation and presentation of baseline prevalence diseases rates, incidence rates and other calculated measures that can be used to demonstrate effectiveness of the overall health program. . Plan for internal audits to ensure health plan program requirements are followed. * Provide specific quality assurance/quality control (QA/QC) plans that cover clinical and laboratory medical activities. Particular emphasis should be placed on consistency and clarity of charting and laboratory diagnoses of vector-bome and other infectious diseases. 2.3. Contractor Organization and Management of the Health Plan Within the context of the policies described in Section 3.0, the Contractores Health program will be organized and managed to ensure the following: • Health professionals will be available in appropriate numbers and have the necessary training and skills to deliver the services required. * Site management will endorse the Health program at each site. Clear organizational responsibilities will ensure that functional and Operations Integrity Management System requirements are met * Health interfaces with line management are clearly defined including reports for periodic review. * Contractor medical and IH organizations have clear lines of communication with Esso's in-country Medical Director. * Procedures exist to evaluate the quality and appropriateness of Health services and to manage the continuous improvement process. * Where sound medical management and public health principles dictate, Contractor should coordinate practices, procedures, and record keeping with Esso and other contractors to effectively monitor the health of the overall workforce. R:\Iobo5286\sarosdm\userdir\gps-01O.doc Specification No.:; GPS-01 Pape 9 of 26 Rev.1 1 9 Ot9 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN 3. Esso Policies Esso's policy is to conduct its business in a manner that protects the health and safety of its employees, others involved in its operations, customers, and the public. Esso Policy Directives will be available upon request. Contractors and Sub-Contractors shall contractually acknowledge Esso's strong commitment to Health and safety. Their contracts will affirm that they have a written Health and safety policy, which Esso will review and approve prior to mobilization. The Health and safety policy shall be widely disseminated and understood among Contractor and Sub-Contractor staff. Esso is committed to continuously improving performance throughout its activities. This effort involves a systematic and cyclic approach to implementing Health and IH programs, monitoring effectiveness, analyzing results, and reevaluating and changing policies and procedures as appropriate. To help Esso achieve its policy goals, Contractor(s) will systematically identify, evaluate, and try to control or eliminate potential health risks associated with Project operations. Contractor shall also comply with the Health Plan requirements stated in Section 2.2. Achieving these goals will improve health, safety, productivity, and morale among staff; meet business needs; enhance relationships with the communities in which Esso operates; and ensure compliance with legal and regulatory obligations. 4. Health Resources, Roles, and Responsibilities 4.1. Historical Perspective Historical experience in medically deprived nations elsewhere estimates the following: * Approximately 65% of national employees will visit the clinic per month. * Expatriate employees visit a clinic 4 to 6 times a year. * Camp health care professionals (e.g., doctors, physician assistants, nurses) are expected to assist 30 to 40 patients a day, perhaps more during malarial peaks. R\lobo5285\sarosdm\userdir\gps-010.doc I Specificafion No.: GPS-010 t Page 10 of 26 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN The World Health Organization minimum standard is 3 beds per 1,000 person population. Contractor shall propose in his health plan appropriate facilities, based upon work force size. 4.2. Health Care Providers 4.2.1. Basic Skills Requirements Due to the nature of the work environment, medical personnel should be competent with trauma/emergency medicine, both light and heavy, to address situations such as crushing, multiple injuries, chest and abdominal penetrating wounds, and amputation. Medical personnel should also be knowledgeable, preferably extensively experienced, in preventing and treafing infectious and vector-bome diseases, like malaria. Experience has shown that practitioners who have worked in remote areas (i.e., removed from consultation and nearby specialist care) better handle the daily challenges, difficulties, and frustrations associated with practice in medically under-served countries. Emotionally staple, physically fit practitioners who have preferably three or more years (minimum) experience in foreign or remote (yet modem and scientifically oriented) practice settings tend to withstand the rigors and relative professional isolation that are typical of overseas work in isolated settings. 4.2.2. Additional Skills Requirements / Roles In addition to providing primary care and emergency medical services, health care providers may be expected to provide ancillary health services that are not part of a core clinical skill set, but are additional expectations based on Project complexity, and the working and living environment. These skills and capabilities are listed below (not all inclusive) and may provide for optimal usage of the health care provider a sick bay management * first aid training * monitoring food hygiene R:X\obo528S\sarosdm\userdirgps-010.doc i Specification No.: GPS-010 | Pae 1e1 of 26 Rev. I 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN monitoring environmental health - water supply monitoring - solid waste treatment - sanitation - disposal of clinical waste - control of vector-bome diseases e.g., act as Public and Environmental Health Control Officer * exposure monitoring / surveillance I education * disability management * drug and alcohol policy implementation (per GPS-008) - industrial hygiene monitoring - mental health counseling health education / promotion * immunization / chemoprophylasis * site emergency response & disaster planning * administration: record keeping I reporting * medical supply inventory monitoring * maintain communication with local medical community * aid in Exxon-defined community outreach at a later stage D maintain communication links between on-site and base camp (i.e., telephone / radio I fax/ tele-medicine) 4.2.3. Hiring Criteria Contractor's Medical Director will be a fully-qualified physician reporting directly to Contractor's Project Manager or equivalent and will regularly communicate with Esso's In-Country Medical Director. The Medical Director will be an expatriate (American- or Western European-trained) and have the following experience and skills (in order of priorty): 1. public and environmental health with emphasis on vector-borne and infectious diseases and disease epidemiology 2. primary care (health services delivery) ranging from emergency medicine to routine ambulatory care, and 3. occupational health. R:\lobo52SS'sarosdm\userdir\gps.010.doc Specification No.: GPS-O10 | Page 12 of 26 Rev. 1 | 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN Additional candidate qualification for medical director, and for other doctors, physician assistants, nurses, and medics will be submitted to Esso for review and approval. Refer to Appendix 111, Section 2.2.2. Basic requirements for each position is as follows: Medical Director must have good accident and emergency experience, an understanding of occupational health and epidemiology, and a high level knowledge of vector-bome and infectious diseases endemic to the operating area. This senior physician should have solid administrative and communication skills, and be familiar with and maintain relationships with all available medical facilities adjacent to the operating area that couid be used for medical referral. This senior physician shall be the medical coordinator and professional supervisor in his area, and be responsible for treatment procedures and any prophylactic measures required for Project staff. Contractor is expected to have an in-country Medical Director to manage Contractor's Health program. Physician and Physician Assistant (PA) must have at least five years post- graduate experience and should not be newly qualified. The physidian and PA must have experience in accident and emergency, infectious and vector- borne medicine, and occupational health. Additionally, they should have good administrative and communication skills, and be familiar with all available medical facilities adjacent to the operating area that could be used for medical referral. Licensed Registered Nurse should have previous experience in isolated work settings. Should have recent practical refresher training to include tropical and trauma medicine. Should have direct reporting and accessibility to a doctor or experienced PA. The nurse's qualifications and experience should be professionally assessed, and skills pertinent to the job duties enhanced by regular and required sessions of continuing medical education. MedicslParamedics should, at a minimum, be experienced emergency medical technicians (EMT-P) (Paramedic Level,) and have highly advanced trauma stabilization and transport skills. Medics/paramedics will routinely teach and must be experienced with extricating accident victims, proper vehicular (ambulance) transport, and, quite often, with helicopter rescue and evacuation. A Trauma PA or physician teamed with an EMT-P are an optimal critical care transport team. R:.\oboS28S\sarosdmXuserdir\gps-1O0.doc I Specification No.: GPS-010 Paqe13of 26 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN IH Coordinator should be a Certified Industrial Hygienist (CIH) or equivalent. During his/her tenure, it is expected that he/she will select a national and sufficiently train that individual to fill the position. Depending on the size and scope of Contractors work, the lH Coordinator may have other responsibilities. 4.3. Medical Coverage and Service 4.3.1. Medical Care Coverage At any time, the staff of major Contractors, Sub-Contractors, locally hired staff, and others will be temporarily working on a site operated by someone other than their employer. These individuals must never be denied medical care simply because they are not a direct-hire employee of Contractor managing the site medical facility. Just as rooms and meals are charged back to a worker's employer, medical care will also be equally accessible to any Project employee. The Contractor shall provide, with his detailed medical plan, unit rates for medical services to Project staff other than his own direct-hire staff or Sub-Contractors. Contractor's medical clinic will serve project workers but is not to be a general walk-in clinic for non-project personnel. Eligibility for clinic admission for non-project personnel must be defined with cultural tact. Project affiliate staff, govemment personnel working on the site, and Contractor staff are the primary audience for medical care; however the Contractor may also provide care to host country nationals or locals from time-to-time, depending upon the circumstances. As govemment negotiations progress, Esso may establish a limited community health outreach program to support preventive health and provide routine clinical services. Although the scope and details of this outreach program are still undefined, and the Contractor should expect his medical personnel to participate to some degree; however, the associated costs with an outreach program should not be considered in the Contractor proposal. The specific outreach program will be consistent with Esso's long- range outreach policy. R:\henrt9O2\sarosdm\userdir\gps-010.doc | Specification No.: GPS-010 | Page 14 of 26 Rev. 1 29Oct97i ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN 4.3.2. On-Site Medical Services During construction, Contractor's medical personnel will serve the various Project sites in both countries. Table 1 should be used to help plan health care provider staffing levels and can be adjusted as camp populations vary. Tele-medical services also can be actfvely used. Key medical personnel from the Contractor's staff will also have IH contract responsibilities. On-site medics will be expected to handle primary and emergency care as well as some additional responsibilities as a percentage of their-activities. For additional informafion, refer to Section 4.2.1 and 4.2.2. All medics and paramedics will report through a doctor and operate according to standing orders or established written protocols. Refer to Appendix IlIl, Section 2.4.2. Adequate numbers of non-professional personnel trained in first aid procedures provide the first line of medical support. Each work unit that is geographically isolated and working under one supervisor should have an individual trained in basic first aid (e.g., CPR, control of extemal bleeding, etc.) available within 4 minutes of any person in the work unit. A fully trained first aid responder should be available within 20 minutes of any person in the work unit. 4.3.3. Health Clinic at Main Camps The Contractor will staff a Health clinic at the Project's main camps. The most senior health care provider will report to Une Management and communicate with Esso's in-country Medical Director. The clinic will provide complete occupational, clinical, public health/infectious diseases and community camp health services as outlined in 4.3.1 and 4.3.2. Contractor will supply resources such as staffing, medical supplies and laboratory and diagnostic equipment (see Appendix III, 2.3.2). Laboratories with "core" capabilities should be part of Contractor health facilities. Diagnostic capabilities will ensure early diagnosis and treatment as well as monitoring/controlling diseases prevalent in the environment. Contractor should ensure that all health care providers are trained in proper handling of blood and blood-containing products including handling of blood samples and other bodily fluids, sharps, medical waste etc. The contractor should ensure the presence of equipment to properly address these issues R\Iobo5285\sarosdm\userdihgps.1O.doc Specification No.: GPS-01 0 Page 15 of 26 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN Refer to the E&P Forum "Guidelines for the Control of Blood Borne Pathogens in the E&P Industry. Table 1. Staffing Levels and Camp Size On-Site Medical StafftA Camp Paramedic P.A., Nurse, Sr. Population or Physician Physician 1-50 0 *1 0 50-100 2 *1 0 100-200 3 1 200-500 4 2 ° 0 500-1,000 5 3 0 1,000-2,000 6 6 1 2,000-3,000 12 9 1 >3,000 18 12 1 * If a nurse fills the position, he/she should report to an M.D. * * Recommended minimum of one physician in this situation A Requirements can be modified in locations where telemedicine can be actively used, (requires Esso approval) 4.4. Emergency Response The Exxon Medicine and Environmental Health Department issues an "Occupational Health Emergency Response Planning Guide" that addresses the medical and IH aspects of emergency response and evacuation. This Guide includes planning, communications, casualty handling, exposure assessment, and training. When Project designs, execution plans, and organizational procedures are more fully developed, the Contractor will write project-specific response plans built upon this foundation. Medical emergency response will vary by location. Medical evacuation will be implemented as needed, using portable medical units and stretchers placed aboard existing aircraft and vehicles, which can be converted for medical service. Patients will be brought to the nearest main camp triage or treatment site, where the decision will be made whether to evacuate from the country (expatriate) or to a local facility (national). Esso's senior medical personnel will be informed of medical evacuations from any Project site in either country. R:Uobo5285\sarosdi\userdirXgps-010.doc Specification No.- GPS-01 Page 16 of 26 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN All vehicles more than 30 to 45 minutes from an airstrip should be fitted for and carry an emergency stretcher. Long-term charter aircraft should be able to handle emergency stretchers as part of their basic design. Also, Contractor shall provide lighting on airstrips for emergency flights (local technology includes use of oil-soaked toilet paper rolls in coffee cans, which light well even in rain). Contractor must also provide immediate access to radio communications. For logistics of medical evaluations, initial stabilization will be in-country either at the site, base camp, or in N'djamena as indicated. If tertiary care is needed, transportation to a local tertiary care facility (for nationals) or evacuation to Europe (for expatriates) will be arranged. From an IH perspective, emergency response will most probably address crude oil and field chemical spills. Due to the toxic nature of the materials, the industral hygienist will need to work closely with the emergency response team to. address scenarios. Specific topics to considerwould include: - Determining the number and type of clean-up workers and specialized IH equipment - Identifying approprate training materals and a system to train uneducated workers who may not speak English or French. * Defining personal protective equipment needs. * Planning for portable change-house, shower, and laundry facilities. Note: Contractor must provide a method for priortizing and addressing concurrent medical emergencies and also ensure that postponed medical and IH activities are rescheduled for completion. 4.5. Reporting Requirements It is expected that Esso will develop standard health reporting forms to effectively monitor the health of the workforce and to help target medical response measures where needed on a project-wide basis. Esso requires that Contractor(s) report the following information: R:.\oboS285\sarosdm\userdi,Xgps.O00.doC I Specifica1ion No.: GPS-010 | Page 17 of 26 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN * Medical - Morbidity and mortality - Laboratory statistics - Clinic/health-unit usage (numbers and types of cases) - Disease control and treatment program (status, problems) - Routine medical examinations (numbers, types, exposure-related indices) - Medical evacuation * Industrial Hygiene - Site audits/reviews - Exposure assessments and exposure monitoring results - Laboratory statistics - Training activity report S. Health Facilities 5A.. Mobile Clinics Supporting Pipeline Construction Mobile clinics supporting the road upgrade operation crews shall be staffed per Table I and supplied to be self-sufficient and capable of handling emergency trauma in a remote location consistent with Esso guidelines. In addition to first aid boxes, eye wash bottles, and/or appropriate, emergency showers should also be located at key sites in the work area. 5.2. Communication Between Camps, Work Sites, and Mobile Clinics A reliable means of voice and fax data transfer capability is required, to enable doctors, medics, and other emergency personnel to communicate between the base camp, outlying work sites, fly camps, and other mobile-based health providers. An adequate number of multi-channel, sturdy hand-held ground-to-ground units will greatly enhance medical rescue efforts. Esso intends to provide, as part of its overall project support, a reliable telecommunications system to provide the basis for the above discussed capabilities at each of the project locations. Contractors will be required to fumish their own hand-held and vehicle communications units consistent with Esso specifications, which are available upon request. R:\oboS285\sarbsdm\userdi\gps-010.doc | Specification Na.: GPS-010 | PaoelS of 26 Rev. I I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN 5.3. First Aid Equipment Contractor shall provide first aid equipment for each independent crew or camp location for personnel who are trained in basic level first aid. If a medic or doctor (with equipment) is not on-site or available in less than 5 to 10 minutes, Contractor must provide larger first aid kits at intermediate-sized camps. Kits and first aid equipment must be consistent with the attached specification and provided in quantities sufficient to provide immediate access to the relevant first aid responders discussed in Section 4.3.2. Also refer to Appendix Ill, Section 2.3.2 (b). 5.4. Sick Bay Based on the number of employees served and supported, the base camp should be fumished with a sick bay. Details are addressed in Appendix HII, Section 2.3.2 (a). 6. Preventive Health Measures and Personnel Screening 6.1. Fitness Evaluations 6.1.1. Project Staff Contractor shall not hire unhealthy workers (including catering and household staff workers). If treatable problems are found (e.g., certain parasites), the applicant may reapply after treatment. All applicants, including short-term workers shall be free of infectious diseases which may affect others (e.g., active tuberculosis, intestinal parasites, contagious gastrointestinal illnesses, other infectious diseases), and free of acute or chronic diseases that cannot be adequately managed at a work site. Applicants will be disqualified from employment if deemed physically unfit for the job being applied for, but exclusions must conform with applicable local regulations. Also excluded are those workers unwilling or medically unable to 1) receive or tolerate necessary immunizations for yellow fever, or 2) follow prescribed prophylaxis/preventive measures for malaria as appropriate. All workers must have a documented minimal medical questionnaire and physical exam performed by a competent nurse, P.A., or M.D. Documentation should include basic lab tests to determine fitness for work and absence of communicable disease; drug and alcohol tests; and a blood R.:lobo5285%sarosdm\userdir\gps-010.doo I Spedfication No.: GPS-010 Page 19 of 26 Rev.1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN pressure measurement. Third-party employment Contractors must apply the same screening standards, with an emphasis on detecting infectious diseases. Contractors shall screen potential staff for active current and chronic diseases (including selective drug and alcohol testing per the Principal Document), which may prevent workers from performing their assigned work duties, may cause disease in others, or which cannot be adequately managed medically at the work location. Workers retuming for repeat employment after a hiatus of non-employment or extended leave will be subject to similar, but perhaps limited, re- examination and orientation. Contractor shall administer appropriate immunizations, public and environmental health control guidelines, and malaria preventives. 6.1.2. Catering and Household Staff In addition to the requirements of section, 6.1.1, Contractor will examine catering and household staff at an approved clinic. Contractor must perform exams on catering staff according to the Catering Services Specification, GPS-002. Catering and household staff workers shall be trained in personal hygiene and food/water handling techniques that minimize the spread of disease to those whom they serve. Additional guidance is provided in the Catering Services Specification, GPS-002. 6.1.3. Other Specific Employee Groups Other specific employee groups such as drivers (car, bus, truck), crane operators, fire-fighters and wearers of Respiratory Protective Equipment shall be examined as set out in the E&P Forum "Health Assessment of Fitness to Work in the E&P Industry", paragraph 3, and annex 1. 6.1.4. Exclusionary Physical Conditions Potential staff can be considered unfit for duty if they have an underlying condition which: * prevents them from meeting the job requirements, R:obo5285\sarosdm\userdir\gps-01 Odoc | Specification No_ GPS.010 Pag e20of 26 Rev. I1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN * makes them a health hazard to co-workers (e.g., infectious or communicable diseases), or • cannot be adequately managed medically at the work location. Examples of such condifions or diseases are: * Active or miliary tuberculosis, * Splenomegaly at risk for trauma, * Untreated large open abscesses or any evidence of untreated leprosy, * Extensive and undiagnosed skin rashes and other widespread dermatoses, * Active, untreated STDs and advanced syphilis, * Chronic heart or lung disease, * Inguinal, abdominal, or femoral herniae, especially for jobs requiring liffing, * Overt psychosis and other debilitating neuropsychiatric illness, and * Other non-specified conditions which will, in the examiner's judgment hinder effective job performance. 6.2. Public and Environmental Health Control Malaria is present in most of sub-Saharan Africa, including Chad and Cameroon, and is caused by the bite of an infected anopheline mosquito. All malaria can cause illness, but the falciparum variety in these regions kills many people annually. However, early diagnosis and prompt treatment will usually result in early recovery without complications. Esso experience indicates that the number of malaria cases can be significantly reduced by implementing a complete Public and Environmental Health Control program. Contractor shall institute a Public and Environmental Health Control program consistent with Esso policy, the key features of which are described below. Due to the number of infectious and vector-bome diseases endemic in the project environment, specific control programs should be developed for each of the major R :\obo5285\sarosdmmuserdir\gps-O.doo I Specification No.: GPS-010 Paqe 21 of 26 Rev. 1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN infectious and vector-borne diseases. While measures for malaria/vector control will also help control other insect vector-borne diseases, these are subtle but important differences in prevention strategies to these diseases and Contractor should present sufficient information and detail so that its approach can be evaluated by Esso. The five key components of a Public and Environmental Health Control program include (where malaria is used as an example): * Implementing a Public and Environmental Health Control Program • Protecting personnel: - Avoiding mosquitoes and mosquito bites - Malaria prophylaxis * Environmental and engineering design controls: - Environmental control of malaria vectors (e.g., vector eradication/mosquito spraying) - Engineering design to eliminate breeding sites • Training in the above measures * Obtaining skills in diagnosis and treatment Refer to Appendix I for additional information on a Public and Environmental Health Control program. 7. Occupational Health: Chemical and Physical Agent Exposure Chemical and physical hazards may cause sickness, impaired health, or significant discomfort. Chemical hazards include excessive airborne concentrations of mists, vapors, gases, dusts, or fumes. In addition to the potential hazard of inhalation exposure, many materials may be irritating or corrosive to the skin or eyes or can be absorbed through the skin in toxic amounts. Physical hazards include excessive levels of electromagnetic, non-ionizing and ionizing radiation, noise, vibration, and extreme temperature and pressure. Ergonomic hazards include lifting of excessive weights or exerting excessive forces. R:'Jobo5285\sarosdm\userdir\gps-O1CO.doc Specification No.: GPS-010 Page 22 of 26 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN Contractors Hazard Recognition Program must first identify potentially hazardous locations, substances, and activities. A genetic overview of potential chemical and physical hazards associated with the various project phases is listed in Table 2. As the Project becomes more clearly defined, Contractoes industrial hygienist or equivalent health professional shall expand this table to address specific chemical and physical agents, and the various work groups that may be exposed. Material Safety Data Sheets (MSDS), or equivalent, should be collected for each material used at each site and made available to staff. The Contractor can then evaluate potential exposures and monitor these exposures to confirn these assessments. Health risk assessments will be conducted based on this information. - Contractor shall avoid unnecessary exposures to chemical and physical agents and where feasible, replace toxic chemicals with non-toxic or less toxic altematives. In situations where exposures may exceed the recommended health standards, the Contractor shall implement methods for exposure control such as engineering controls, administrative controls, and personal protective equipment (listed in order of preference). Workers will be screened for signs, symptoms, injuries and/or illnesses as a result of potential over-exposure. Affected workers will be removed from exposure and treated appropriately. Prior to retuming to work, their fitness for work will be reassessed. R:\tobo5285'.sarosdm\userdir\gps.01O.doc I Soecification No.: GPS-010 Page 23 of 26 . Rev. 1 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN Table 2. Potential Chemical and Physical Agent Exposures * Abrasive Blasting . Heat Stress * Air Conditioning chemicals * Hospital/Clinic Chemicals . Benzene * Hydrazine * Biological Aerosols * Hydrogen Sulfide • Carbon Monoxide * Laboratory Chemicals * Carpentry Dust * Laundry Chemicals • Confined Space Entry . Lead * Combustion Engine Exhaust Gases (CO, * Lighting NOx) * Crude Oil/PNA * Maintenance Chemicals (all types) * Diesel Fuel/Gasoline * Medical Waste * Drilling Muds/Concems: * Noise - Acids/Caustics . Paint PigmentlSolvent, Coatings - Biocides * Pesticides/Herbicides/Biocides - Mid-Distillates * Process Chemicals - Silica * Radiation * Divers Diseases * Road/Ground Dust * Ergonomics, Human Factors * Sanitation - Biochemical * Sewage Treatment Chemicals - Control Room Design * Solder - Shift Work . Sports Facility Chemicals - Lighting * Water Supply Chemicals - Manual Material Handling . Welding Fumes/UV - Valve Control Design * Workover Fluids 8. Training A draft Health training outline is provided in Table 3. Topics were identified based on review of potential risks and the belief that emphasizing these topics would help prevent or mitigate health problems. Communication is the cornerstone of an effective health program. Contractor's communication programs shall include orientations, injury prevention strategies, and education programs: Orientations shall address health risks, medical resources at work locations, and personal preventive measures recommended for good health, and emphasize infectious and vector-bome disease prophylaxis, including infectious diseases of food, water, and sexual origin. Orientations shall be given prior to project assignment and/or upon immediate arrival at a work site. Disease R:'\obo5285\sarosdm\userdii\gps-010.doc | SpecWication No.: GPS-010 | Paqe 24 of 26 i Rev. I | 29Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN prevention shall emphasize continuing immunizations, worker orientation, health promotion, and active, site-based medical and IH programs. * Injury prevention strategies, in addition to traditional safety measures, shall emphasize safe driving habits, fatigue or jet-lag impact on work, environmental stress (heat), and the potential for blood-bome disease if requiring unscreened blood in remote sites after road accidents. * Education shall address all prevalent vector-, food-, and water-borne diseases, including malaria (prophylaxis, personal protection, early symptoms, use of treated bednets/clothing, home leave precautions); food and water precautions; blood-bome pathogens; environmental risks; risks of abuse of alcohol and drugs; snakes of concem; and swimming habits. Staff education sessions shall also address the prevention of sexually transmitted diseases (STDs), including HIV. Condoms and signage regarding STD prevention shall be available. Contractor's Health Plan shall provide medications for worker STDs that are treatable, thereby reducing the number of active, treatable STD cases in the population. Active STD prevention is associated with a decrease in AIDS case rates. Project contractors, including trucking/transportation contractors, shall be required to implement STD education programs aimed at reducing the transmission and spread of the diseases. R:\oboS285ksarosdmkuserdeigps-O10.doc | Speciflcation No.: GPS-o_ Page 25 of 26 Rev. I 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN Table 3. Training Areas . ... . . ... . . .~. First Aid . Basic First Aid Course All Project staff. * Advanced First Aid Course One individual in every work crew. Public & Environmental Health By Contractor medical staff or Public and Environmental Control Health Control Officer. * Personal Protection For all personnel. * Site Vector Control Measures For personnel in charge of camp operations. Disease Risk/Control By Public and Environmental Health Control Officer or Contractor medical staff. Training for all personnel. . Tropical Disease Precautions Focus on prevention and recognition. * Food/Water Precautions Emphasis on daily activities. * AIDS/Sexual Diseases Risk and prevention focus. * Women's and Children's Health Special needs considerations. * Preparing Catering Staff Proper procedures to safeguard health. Refer to Appendix 1. . Preparing Household Staff Proper procedures to safeguard health. Refer to Appendix 1. Sanitation . General Hygiene Overview. * Food Handling For food handling Contractors/medical overseers. * WaterlWaste For site engineers. Includes drinking water, waste water sanitation and solid waste * Medical Waste For medical personnel. Occpaioiai~athTnIin nimmnt IH for Design Engineers Course to train key design engineers about industrial hygiene and human factors design consideration. Specific Chemical Hazards Based on risk assessment findings. PNA Hazard For workers potentially exposed to crude oil. Heat Stress General health issue. Training for all personnel. Industrial Hygiene . Operations Overviews/Expectations For IH Contractor specialists. * Basic IH Training Course For IH Contacts by the IH Coordinator. . Noise For all personnel * Manual Material Lifting For all personnel Bloodborn Pathogens For all health care providers. Must cover safe handling of blood and potentially blood containing products. R:Uobo528ftsarosdm\userdir\gps-01O.doc I Specification No.: GPS-010 1 Page 26 of 26 Rev. 1 I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - APPENDIX I Appendix I - Public and Environmental Health Control Program From the Contractor's medical staff, a health care provider who is trained and experienced in infectious diseases and vector-bome diseases and their control shall manage the Public and Environmental Health Control program. Approaches should be consistent with WHO's Panel of Experts on Environmental Management for Vector Control (PEEM). The Public and Environmental Health Control Officer will perform the following services: * identify and monitor environmental and behavioral risk factors predisposing to infectious and other endemic vector-borne diseases. * establish procedures and routines for vector-control operations within the camps and direct larviciding, spraying, and other environmental control measures to reduce vector populations. - be familiar with the qualities and toxicology of chemical insecticides and larvacides, their proper usage, safe handling and storage. The Public and Environmental Health Control Officer must approve any and all chemical vector control agents prior to their purchase or use on site. * implement routine inspections of camp facilities and potential vector breeding sites to confirm the effectiveness of vector-control operations. Baseline and perodic data should be obtained so that numeric measures of effectiveness are presented. * maintain detailed records of vector-control activities. * provide training and technical supervision of local personnel who will use deltamethrin or permethrin to permeate mosquito nets, protective curtains, and clothing. * conduct formal and informal sessions with crews and staff members to ensure awareness of malaria risk factors and personal protective measures. * help communicate policy regarding chemoprophylaxis. * be skilled in diagnosing prevalent infectious and vector-bome diseases based on clinical features and appropriate diagnostic testing either performed by himself or other health care providers. R:Vobo5285'sarosdmiuserdi,igps.010.doc Specificati onNo.: GPS-010 Page 1-1 of 5 Rev. 1 j 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - APPENDIX I * support other medical staff in their efforts regarding epidemiological tracking of infectious and vector-bome disease cases. The Public and Environmental Health Control Officer must direct the protocols, data collection, and database entries for this purpose. Data should be obtained and analyzed in a form that is consistent with the WHO's Panel of Experts on Environmental Management for Vector control (PEEM). * compile a monthly (and project end) report summarizing the following infornation and submit the report to the Esso Medical Director: - fever cases, and suspected and confirmed cases of malaria and other infectious and vector-bome diseases, - relationship of these cases to environmental parameters and personal protection measures (including chemoprophylaxis) employed, and - utility of vector control and health education activities employed. EXAMPLE OF MALARIA CONTROL PROGRAM Personal Protection for Malaria Personal protection can be categorized into activities, both of which are important and should be started prior to arrival of Contractor personnel in Chad/Cameroon. Avoiding Mosciuitoes and Mosauito Bites Project personnel will be expected to comply with the following avoidance strategies: * Use mosquito repellents containing approximately 30% DEET. Repellents should be applied regularly. If arriving via plane during highest risk periods of dusk until dawn, apply repellent prior to arrival. Maintain the routine during the evening and at night particularly when working outdoors. * Be aware of damp cool areas where mosquitoes rest. Externally located shower areas are always damp and are ideal places for mosquitoes to bite unclothed bodies. Repellent should be applied immediately after R:Mobo5285\sarosdm\userdir\gps.010.doc SpecificationNo.: GPS-010 Pagel-2of5 Rev. 1 129 Od 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - APPENDIX I showering in the evening hours. Accumulated water such as puddles, buckets, and old tires are excellent mosquito breeding areas. Be aware that some common mosquito control methods are not reliable. "Knock down" sprays "bug bombs" and mosquito coils have an immediate, but temporary effect, in reducing the number of flying mosquitoes. These methods should not be relied on in preference to other described measures. a Because mosquitoes are attracted to dark colors, clothing shall be light colored and consist of long pants and long sleeves. These measures are particularly important in the dawn-to-dusk hours. a Clothing should be permeated with permethrin (Peripele 55 or deltamethrin insecticide) before arrival or soon thereafter. Deltamethrin is non-toxic to humans, but will repel or kill insects. Also permeate bed nets, door coverings, and curtains with this insecticide. Malaria Provhylaxis It is critical that all expatriate personnel faithfully take malaria medication to prevent malaria. The current recommendation from the medical department for malaria prophylaxis to Esso expatriate personnel is as follows: * First choice: Mefloquine (250 mg/week) Note: Mefloquine should not be taken without doctor's advise by people on medication and/or with certain heart conditions, high blood pressure, a history of convulsions or psychiatric problems. The use of Mefloquine should be discouraged for persons whose job requires a high degree of fine motor skills or with a history of side effects to Mefloquine. * Altemate choice: Chloroquine (500 mg/week) with proguanil (200 mg/day) Note: While proguanil is not available on the U.S. market, it is easily obtainable in pharmacies in Africa and Europe. Each of the above-mentioned drugs is available under various trade names. Current recommendations for ChadlCameroon should be obtained from Contractor medical advisors. R:.lobo5285\sarosdmmuserdirgps-D1O.doc I Specification No.: GPS-010 PageI-3of5| Rev. 1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - APPENDIX I Vector Control Environmental control means controlling specific insect vectors to reduce the risk of their contacting workers and causing infection. The vector of concem with malaria is the Anopheles mosquito. Killing all biting insects in the greater region of an operating area is not possible particularly during rainy seasons. Such measures are localized to operating sites and immediate surrounding areas. Environmental Control of Malaria Vectors a Ditches, drains, and depressions in or near camp sites that are capable of holding water for more than 4 or 5 days should be inspected for mosquito larvae or pupae. If found: - small depressions should be filled with dirt, - drainage areas that flow into rivers or streams that the local population uses or are natural habitats for fish and/or other animals should be treated with Altosidrm pellets at the rate of one pound per acre (non-toxic to man, animals, and fish; these pellets reduce the risk to workers), - water that drains into waste water pits and/or swamps and will not be reused should be treated. * Laundry and shower areas are ideal resting locations for adult mosquitoes and should be sprayed with deltamethrin, Chem Rez-25TM, or similarly approved insecticide every 3 days. Workers assigned to spraying should be specially trained and certified in using the equipment and these agents, and given the necessary safety equipment (rubber gloves and cone masks). * "Knock down" sprays should be used only for cockroaches and other nuisance insects, but are unreliable as a malaria-control method and may constitute a minor health risk in tightly closed areas. Moreover, using knockdown sprays can provide a false sense of security. * Routine adulticiding (killing adult mosquitoes) using area-wide sprayers is not effective or cost efficient, except for true widespread outbreaks of disease or insect populations. However, selective hand spraying, using permethrin or other approved agents, should be performed R:J\obo5285\sarosdm\userdir\gps.010.doc I Specilication No.: GPS010 Page 1- 4 of S Rev. 1 T 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - APPENDIX I approximately every 3 days at camp entry points and areas where moisture routinely gathers, to kill any vectors resting at those sites. Environmental Control of Some Non-Mosquito Vectors For insects other than mosquitoes, avoidance is best. An individual using protective clothing and a face net (like a beekeeper uses) should kill stinging insects using Chem Rez-25™, deltamethrin, or approved insecticide in a hand sprayer. After the insects have been destroyed, all nests should be removed and bumed. All food, vegetable, and fruit refuse should be incinerated and the ash placed in the landfill. Traps for filth flies should be placed between the garbage pit and the camp site and emptied weekly. Training Training is necessary to develop individual commitment to program principles of personal protection and to understand the rationale for other program components. Training needs to occur often and at different times in multiple locations. Typically, the Public and Environmental Health Control Officer, in consultation with the supervising doctor, will coordinate such training. Their medical staff and the appropriate site managers will also help conduct training. Esso is committed to minimizing Esso and Contractor staff exposure to malaria. So, Esso has developed substantial Public and Environmental Health Control training and educational materials. Project health, safety, and environmental personnel will work with the Contractor(s) to ensure comprehensive malaria training and control programs e)xist for their expatriate and national staff prior to mobilization. Diagnostic Methods and Treatment for Malaria In the field, Contractor should primarily use QBCe technology to diagnose malaria early. This technology helps to rapidly determine the presence of malaria. Medical staff training is not complicated. All field clinics should have this equipment on site or nearby. Basically, equipment consists of a special blood centrifuge and ordinary microscope with a special light. Field doctors should understand malaria treatment methods, which consist pnmarily of oral or intravenous derivatives of quinine. With early diagnosis, treatment is effective. R:.\obo5285\sarosdmruserdirgpsO1O.doc | Specification No.: GPS-010 Pa eI- 5 of 5 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - APPENDIX 11 Appendix 11 - Vector-Bome Diseases Other than Malaria As with malaria, controlling the vectors of other diseases depends upon an awareness of the vector's life history, biting habits, and preferred breeding habitats. The WHO's PEEM Series of publications should be consulted. The following generalizations concem the vectors of other diseases found in the drilling areas of Chad. Filariasis (Elephantiasis): Mosquitoes of the genus Anopheles can carry filariasis, but those of the genus Culex are also major vectors. Unlike Anopheles, Culex breeds in stagnant, muddy pools and even in water contaminated with animal and human waste. It bites indoors or outdoors; its wings are not spotted; it does not stand on its head while feeding. The Culex vector of filariasis in Chad bites at night. Arboviruses (Arthropod-Bome Viruses): Chad mosquitoes transmit a number of viruses that cause human illness. These viruses have interesting names like Chikungunya and O'Nyong Nyong Fever. The Anopheles and Culex mosquitoes spread these viruses as discussed above. Mosquitoes of the genus Aedes, transmit three arthropod-bome viruses: A yellow fever, dengue, and Rift Valley fever A. Aedes mosquitoes bite in the daytime, have white bands on their legs, and breed in natural or man-made containers such as hollow tree stumps, tin cans, and water storage jars. Onchocerciasis (River Blindness): Black flies transmit small worms which cause this disease. Black flies are tiny gnats (7no-see-ums') that often appear as clouds of insects. They bite with a vengeance unexpected in one so small. Black flies are day biters that breed in fast running, turbulent water such as in rapids, dam spillways, and waterfalls. Unfortunately, they are strong fliers despite their size and can be found many miles from their breeding places. Repellents and clothing are the only practical deterrents if their breeding sites cannot be found and treated with insecticides. Periodic treatment with the drug ivermectin is now being used to prevent local people in affected areas from developing the serious consequences of the disease, particularly blindness. Leishmaniasis: Sand flies carry this disease which can cause skin sores and chronic liver infection. Like black flies, they are tiny and vicious biters. They breed in animal burrows, termite mounds, and cracks in dwelling walls. They bite at night and can be avoided by the use of insecticide-impregnated mosquito nets. R:.'oboS285\sarosdm\userdir\gps.010.doc SpecficationNo- GPS010 Page 1o-1 fd Rev. 1I 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - APENDIX 11 Trypanosomiasis (Sleeping Sickness): Tsetse flies transmit this disease, which is responsible for the chronic symptoms described by its name. These large flies, uncommon in the drilling area, breed in the ground along stream beds, often at the base of trees. The female produces only one offspring at a time, and the tsetses populations are not usually large. They actually pursue their prey and may follow cars for miles. Both mates and females are strong biters. They are not as sensitive to repellents as most other insects. If they are in the area, they cannot be ignored. Swatting is often the only deterrent If they are encountered on a regular basis, special, very effective traps can be used to reduce their numbers. Schistosomiasis (Bilharziasis): This disease, which can cause bladder, kidney, or liver damage, is caused by small worms that live in the blood vessels of infected people. Infection is acquired when swimming, bathing, or even wading in bodies of fresh water (e.g., lakes and stagnant ponds). The parasite is transmitted through the unbroken skin during contact with water that contains the small, freshwater snail vectors. Chemicals exist that can kill the snails if necessary, but the best approach is to avoid contact with any natural bodies of fresh water. Dracunculiasis (Guinea Worm Disease): This disease is acquired by drinking from wells and local water sources that are contaminated with infected water fleas called cyclops. After a human swallows this contaminated water, it takes nearly one year for the larvae to develop into fully grown worms that live just below the skin surface. When mature, the worm, now nearly three feet long, causes a sore to develop, usually on the leg or ankle, and the worm emerges through it over a period of weeks, releasing more offspring into the water where the person seeks relief. The emerging worm may cause nearly total incapacitation. Treating village water supplies with chemicals, filtering the water, and avoiding contact between the water and an individual with an emerging worm are methods of combating Guinea worm disease. Drilling crews can avoid infection by only drinking water from the camp's deep wells. Hemorrhagic Fevers (Lassa Fever): A variety of hemorrhagic viral fevers are potentially present in the project environment, particularly in rainforest environments. The animaVinsect reservoirs for these diseases are not fully known. These diseases can produce symptoms ranging from mild (headache, nausea) to severe (uncontrolled bleeding). Preventive strategies and rigorous surveillance efforts are critical. R:.Mobo5285sarosdmiuserdiAgps.010.doc I Speoiication No.: GPS010 | PageDI.2of3 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - APENDIX II Table 4. Summary of Vectors and Controls for Selected Vector-Boome Diseases in West Africa Disease Vector Exposure Risk Exposure Control Treatnent Onchocerciasis black fly fast-flowing rivers larvicide sprays Ivermectin (river blindness) Loa Loa deer fly day exposure in light clothes Diethylcarbamazine (filariasis) S. Cameroon Trypanosomiasis tsetse fly rivers, water holes, dry dull-colored, heavy-weight Pentamidine season, rural areas, clothing, window screens day biter, bright- on vehicles, mosquito colored clothing, netting for day-time moving vehicles resting Schistosomiasis snails fresh standing water no bathing, in case of Praziquantel (Bilharzia) III contact rapid toweling I _ _ Publications from the WHO PEEM will be useful to Contractor when planning control measures for vector-bome diseases. Three such publications are: e Guidelines for Cost-effective Analysis of Vector Control (1993) - Guidelines for the Incorporation of Health Safeguards into Irrigation Projects through Intersectoral Cooperation, with special reference to the vector-bome diseases (1991) * Guidelines for Forecasting the Vector-bome Disease Implications of Water Resources Development (1991) R:\Iobo5285\sarosdm\userdir\gps-01O.doc Specification No.: GPS-010 Pane ii- 3 of 3 Rev. 1i 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR HEALTH PLAN - APPENDIX IIl Appendix IlI - Medical Service Guidelines for Remote Sites Refer to the "Medical Service Guidelines for Remote Sites" on the following pages. Note that the following document was prepared for Esso physicians developing risk- based, operation-specific recommendations regarding the level of on-site health care. Contractor should use this document as a guide to do the same and to help it develop measures to correct known and potential health concems in and out of the workplace in Chad and Cameroon. References to Esso physicians' responsibilities, in the attached document, will not apply to Contractors relationship to Esso on this project, except as otherwise defined by the Job Specification (e.g., interactions with Esso's Medical Director). Contractor will need to specify its own equivalent of the "Esso physician" in its own Health Plan. R:Mobo5285\sarosdmruserdir\gps-01O.doc Specification No.: GPS-010 Paqe 111-1 of 59 Rev. I 29 Oct 97 MEIALSRVG Im I I/s I I I I I I . | FOR REME SI E I S =,zm];w N \1 E ESSO EXPLORATION & PRODUCTION CHAD INC. chad development project \\Fdho-OS\datal\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\REMOTE-C.DOC Page 111-2 of 59 †*~~~...*.....*....*..***** .. ~~~~~~~~~~~ ~ *.*...... .... .... ... .... .... .... ..... . .... .... .... ............... .... . .. ... ... -~~~~~~~~~~~~~~~ TABLE OF CONTENTS 1.0 MANAGEMENT SUMMARY 111-5 2.0 MEDICAL SERVICE GUIDELINES 111-6 2.1 INTRODUCTION ll-6 2.1.1 Definition 111-6 2.1.2 Purpose 111-6 2.1.3 Objective 111-6 2.1.4 Rationale 111- 6 2.1.5 Implementation 111-7 2.2 PERSONNEL lil-8 2.2.1 Qualification of the Health Care Provider (HCP) III- 8 2.2.2 Experience and Credentials 111- 8 2.2.3 Critical Skills 1I1- 9 2.2.4 Duties and Responsibilities I11-13 2.3 FACILITIES AND EQUIPMENT 111-17 2.3.1 Facilities 1II- 17 2.3.2 Drugs and Equipment Ill- 18 a. Sick Bay III- 18 b. Dispersed Sites 111- 18 2.3.3 Organization and Management l1l- 19 a. Maintenance of Facility III- 19 b. Access by Patients ll- 19 c. Maintenance of Equipment III- 19 d. Inventory Control II1- 20 e. Controlled Drugs 1I1- 20 2.3.4 Transportation IlI- 20 a. Ambulance 1I1- 21 b. Helicopter/Fixed Wing Aircraft or Boat fit- 21 2.3.5 Communication 111- 21 a. Telephone/Fax Machine 111- 21 b. Radio Communication 1II- 22 2.4 PROCEDURES 1I1- 22 2.4.1 Medical Evacuation Ili- 22 a. Management of Medical Problems at Remote Sites 111- 22 b. Indications for Medical Evacuation 111- 22 c. Transportation Issues 111- 23 d. Procedures to be Followed by the HCP: 111- 23 e. Medical Escorts 1I1- 23 \\Fdho-05datal\ o864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICALDOC Page 1ll-1 of 59 f. Reception 111- 24 9. Assessment of Fitness for Duty 111- 24 2.4.2 Standard Operating Procedures/Protocols Il1- 25 a. General Protocols 111- 25 b. Specific Protocols 111- 25 c. Reference Materials 111- 27 2.4.3 Administration 11- 27 a. Working Relationships 111- 27 b. Documentation and Medical Record Keeping 111- 29 c. Inventory of Supplies 111- 32 d. Checklists 111- 32 3.0 APPENDICES 1. RECOMMENDED SICK BAY LAYOUT ................................................ 111-33 II. RECOMMENDED LIST OF DRUGS AND EQUIPMENT ...................... 111-34 Ill. EXAMPLES OF OCCUPATIONAL HEALTH CHECKLISTS ................. 111-49 IV. ALCOHOL AND DRUG SPECIMEN COLLECTION PROCEDURES .... III- 54 \\Fdho505\datal\06864000\CPMT\WORDPROC\JOBSPECXGPS\REVOMEDICAL.DOC Page 111-2 of 59 1.0 MANAGEMENT SUMMARY The Medical Service Guidelines for Remote Sites document is intended to help Esso(1) continue to meet the challenges of remote site health care delivery in a manner consistent with our priority on safety and health. The guidelines were prepared for typical remote onshore or offshore operations but should serve as a framework to assist Esso physicians in developing risk-based, operation-specific recommendations regarding the level of on-site health care. The output may be used to offer guidance to third party medical service providers regarding the expected level of on-site care and can also serve as the basis for conducting professional evaluations of established operations to help insure consistency of care. As Esso continues to explore new venture business opportunities in remote, less developed frontier regions of the world, the challenge of maintaining our high safety and health standards is increased. The risks of illness and injury in such operaions may be greater due to occupational and environmental factors and/or local endemic diseases. Site health assessments may reveal that acceptable medical resources are either unavailable or at a sufficient distance from remote onshore or offshore operations to limit timely delivery of routine and emergency medical care to the workforce. As a consequence, Esso has directly or indirectly supplemented site-based medical services in all of our remote operating locations where the level of support from existing resources is deemed to be unsatisfactory. The level of care and services in these locations varies, in part because the needs of individual operations vary. In areas where Esso directly provides medical support, the level of care is consistently high. In locations where medical support is coordinated and delivered by a third party, care may be less consistent. Medical care guidelines have been drafted to clarify Esso's expectations regarding essential on-site services and thereby establish greater consistency among remote operations. The Medical Service Guidelines for Remote Sites covers three broad support areas: personnel, facilities and equipment, and procedures. There are three classes of medical personnel required to deliver remote site medical care. In addition to the on-site health care provider (HCP), whose qualifications, skills, and responsibilities are detailed in the service standards; there are also defined roles for an extemal consulting physician and the Esso physician responsible for advising the operation. These individuals are expected to provide clinical advice, guidance, and oversight to the HCP from an off-site location. The physical facilities and critical equipment which should be available for use by the on-site HCP are described in the service guidelines. In addition, expectations regarding organization and operation of the clinical facility are also defined. General procedures and guidelines for conducting medical evacuations are described along with \\Fdho-05data1\06864000\CPMT\WORDPROC\.OBSPEC\GPS\REVo\MEDICAL.DOC Page 111-3 of S5 categories of medical conditions for which the HCP should possess and follow a set of standard operating protocols. Finally, there is a set of general administrative procedures to guide the HCP on working relationships, documentation, reporting, and inventory control. The appendices contain suggested floor plans for a sick bay, recommended medication and equipment lists, and samples of forns and checklists to assist the HCP. (1)The use of the name "Esso" in these guidelines shall include Esso and its affiliates. 2.0 MEDICAL SERVICE GUIDELINES 2.1 INTRODUCTION 2.1.1 Definition Medical Service Guidelines refer to a set of professionally defined requirements for medical personnel, facilities, equipment, and operating procedures in high occupational risk locations to help insure that acceptable routine and emergency medical services are available to promote and maintain a healthy workforce. Remote Sites refer to any industrial sites operated by Esso or its affiliates, characterized by the possible absence of acceptable medical support in close enough proximity to a workforce at potentially high occupational risk to provide routine and life-saving emergency medical services. 2.1.2 Purpose The Medical Service Guidelines for Remote Sites is intended for use by Esso and its affiliate venture operations to offer general guidance to third party medical service providers regarding the expected level of on-site care. 2.1.3 Objective Medical service guidelines provide a basis for helping to insure that Esso's primary emphasis on health and safety can be addressed systematically and consistently in all operations. 2.1.4 Rationale Safety and health are the highest priority in Esso operations. Prompt diagnosis and \\Fdho-05\dataI\06864000\CPMT\WORDPROCUOBSPEC\GPS\REVO'MEDICAL.DOC Page 11-4 of 59 treatment of illnesses and injunes, and ready access to critical life support services are expected in all operating locations. Providing a range of on-site health services at remote sites helps to improve the outcome of more serious medical problems, prevent minor problems from becoming more serious through early intervention, and reduce productivity loss due to illness and injury. The need for medical service guidelines in higher risk remote operating sites is driven by the following factors: a. Medical services in lesser developed regions of the world may vary in quality and accessibility. Medical service limitations may be compounded by inconsistent training and experience of medical personnel, scarcity of equipment and supplies, and poor maintenance capabilities. b. Travel time may be extended and unpredictable (> 1 hour) between the operational site and the nearest acceptable medical facilities due to long distance, poor transportation-related infrastructure and weather. c. Environmental risk factors which indude extremes of climate (e.g. prolonged winter, monsoon, drought) and variable community/public health practices (e.g. poor sanitation, inadequate supplies of safe water) may exist. d. In tropical regions, serious infectious disease with rapid courses (e.g. malaria) is not uncommon. e. Local health care regulations and sociaVpolitical factors may be responsible for differences in cultural beliefs/practices and expectations about medical care and services, particularly between the non-nationallexpatriate workers and the local nationals. f. Preventive/occupational health practices may be non-existent or a low priority for many lesser-developed local health care systems. 2.1.5 Implementation The planning and implementation of remote site support services must be carried out in close cooperation with the Esso or affiliate physician advising the operation. Such physician will provide general recommendations regarding requirements for medical personnel, facilities, equipment, and procedures based on knowledge of operational plans and the outcome of previously conducted medical and health risk assessments in the operational area. The guidelines are for a typical remote onshore or offshore operation but may be modified, as appropriate, by the Esso or \\Fdho-05\datai\O6864OOO\CPMT\WOROPROC\JOBSPEC\GPS\REVO\MEDICALDOC Page 111-5 of 59 MI.IJI.I..F,-~~~~~~~~L;SERVfGE.~~~~~~3UIDEUNES FOR REMOTE S.........I...... affiliate physician advising the operation. The Medical Service Guidelines for Remote Sites should aid in the selection of third party service providers at the start-up of an operation by helping to insure that vendors are bidding to deliver a comparable set of services. The guidelines will also serve as the basis for conducting professional audits of established operations to help to insure consistency of care. Critical deficiencies and areas for improvement can be identified and selectively targeted for appropriate remediation; thereby, minimizing the need to consider more costly vendor changes during ongoing operations. The guidelines may be appended in part or whole as an exhibit to the vendor contract Where appropriate, the vendor may be asked to attest thatservices will be provided in a manner consistent with the guidelines or any previously agreed to exceptions. 2.2 PERSONNEL Three classes of medical personnel should be ready and able to provide uninterrupted services to the entire remote site workforce on a 24-hour per day, on- call basis, throughout the penod of higher rsk operations: Esso Physician Advising the Operation - Esso physician or affiliate medical director with concurrence from Esso's medical department provides general recommendations regarding requirements for medical personnel, facilities, equipment, and procedures based on knowledge of operational plans and the outcome of previously conducted community medical and health risk assessments in the operational area. Health Care Provider (HCP) - located in the field and provides day-to-day clinical services to remote site workforce, including routine and emergency medical care. Consulting Physician - provides day-to-day clinical support and guidance to on-site HCP, including standard operating protocols, case specific clinical management advice, and professional performance assessment and feedback (this support may be from an off-site location by acceptable communication linkage).. 2.2.1 Qualification of the Health Care Provider (HCP) The number and type of HCPs required to deliver medical services at the remote site will depend upon the number of expatriate and national staff employed; the area over which operations will be carried out; the local health care capability; the \\Fdho-05\data1\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVOWMEDICALDOC Page 111-6 of 59 time/distance for medical evacuation; and the health risks associated with the particular occupational and environmental hazards at the remote location. HCP should possess appropriate and up-to-date qualificationAicense as a recognized health care provider (e.g. licensed physician, nurse practitioner, physician's assistant, or paramedic). The choice of HCP should be determined by Esso physician advising the operation. 2.2.2 Experience and Credentials HCP should possess and present evidence of the following: a. Current certification in Advanced Cardiac Life Support (ACLS), Basic Trauma Life Support (BTLS) or equivalent critical life support training. b. Experience working in an Accident and Emergency Unit or equivalent. c. Recent relevant occupational experience (e.g. offshore or other industrial field location). d. Good communication and organizational skills. Ability to communicate in local/national languages in addition to English, is advantageous. e. Basic computer skills. Ability to record and report outcome and utilization information, and track inventory. f. Medical fitness for a remote location and ability to comply with any required remote location training or induction program, including pre-entry alcohol and drug testing. g. Ability to demonstrate positive motivation and to work unsupervised or singly. h. Further specialized training and experience in tropical medicine/infectious disease is required. 2.2.3 Critical Skills HCP should possess the critical skills required to deliver emergency and routine medical care. HCP must be able to manage serious illness and injury at the remote location, as appropriate, prior to evacuation for further evaluation/treatment at an acceptable medical facility. HCP must have sufficient training and experience to manage the more common routine medical problems at the remote location, as XXFdho-05'data1 I6864000CPITMWORDPROCUOBSPECaGPSREVO\MEDICAL.DOC Page 111-7 of 59 appropriate, in consultation with an extemal consulting physician. a. General Medical Management Any illness or injury managed in the remote location will require the HCP to perform an appropriate clinical assessment, provide proper treatment, and thereafter, continue with periodic assessment and monitoring of the patient until full recovery or until care is transferred to another provider with equal or greater qualifications. \\Fdho-5Odatal\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICAL.DOC Page ll-8 of 59 GUIDELINES FOR REMOTE SITES ~~~~~~~~~~~~~~~~~~~~........ (1) Clinical Assessment HCP must be able to take a relevant clinical history, perform a complete physical examination and conduct simple bedside tests to ascertain the diagnosis (e.g. QBC test for malaria, urine dipstick testing, etc.). (2) Medication Therapy HCP must have knowledge and experience with use of non-prescription-as well as common prescription medication, including indications, dosage, duration, route of administration, side effects, toxicity and precautions. b. Serious Illness and Injury Management In any hazardous operafing location, there may be a risk of life threatening accidental traumatic injury and bums. The risk of unexpected medical emergencies becomes a greater concem when increased numbers of individuals of varying age, background, experience and fitness visit or inhabit the remote worksite. Acute and/or chronic pre-existing medical problems, including; seizures, diabetic coma, acute psychosis, anaphylaxis, and cardio-pulmonary arrest, may be present as life threatening conditions requiring prompt medical intervention. (1) Advanced Life Support HCP must have training and experience equivalent to Advanced Cardiac Life Support and Basic Trauma Life Support. HCP must be familiar with the procedures, medication, and equipment required to provide advanced life support in the event of serious trauma, shock, or cardiac arrest, including: - medication therapy (e.g. cardio-pressors, oxygen, narcotic analgesics) - peripheral and central venous line (external jugular) placement - airway management, including endotracheal intubation, and crico-thyroidotomy - use of a monitor-defibrillator and external pacer - application of pneumatic anti-shock garment - use of extrication and orthopedic/spinal stabilizing devices (2) EKG Interpretation HCP must be able to perform a 12 lead EKG, interpret changes consistent with common cardiac rhythm abnormnalities, acute injury pattems, and provide prompt and appropriate treatment of life threatening conditions, when necessary. \Fdho05\datal\068640OO\CPMT\WORDPROCUOBSPEC\GPS\REVO\MEDICALDOC Page 111-9 of 59 \\Fdho 05\data1\0686400UNCPMT\WORDPROCxJO55.......EREV0M EDICA...O C Page 1-1of. \\.Fdho-05\datal \06864000\CPMTRWORDPROC\JOBSPEC\GPS\REVOWvEDICAL.DOC Page Ill-1 0 of 59 (3) Intravenous Therapy HCP must have training and experence in placing peripheral intravenous lines and administering infusions of systemic antibiotics (for infections) and colloid/crystalloid solutions (to counteract hypovolemic states due to bleeding, bums, severe diarrhea or vomiting). Central venous line placement should be limited to the extemal jugular when necessary, to minimize risk of compiications. (4) Management of Soft Tissue Injurv and Fractures HCP must have training and experience in extensive wound care and management including proper anesthetic techniques, cleansing, debridement, suturing, and bandaging. HCP should be able to appropriately stabilize and manage simple and long bone fractures, and institute proper spinal immobilization in cases of suspected cervical or other spinal injury. c. Common Illness and Injury Management A range of common problems can be expected to occur in an otherwise healthy working population. The incidence of such problems may be influenced by such factors as: the nature of the work, the level of environmental stress (e.g. climate, altitude, light-dark cycles), proper adherence to site sanitation and hygiene standards, or as a result of close person to person contact. Such conditions usually resolve quickly if recognized and treated early in their course. Individuals suffering from such conditions may be temporarily unfit for usual duty. (1) Minor Trauma and Wound Manaaement HCP must have training and experience in simple trauma and wound management (eg. minor lacerations, minor bums, sprains, simple incision and drainage) including proper anesthetic techniques, cleansing, debridement, and sterile closure using simple sutures and/or bandaging. HCP must be able to recognize and treat latent wound infections and remove old sutures, when appropriate. (2) Common Illnesses HCP must have training and experience in the diagnosis and management of common illnesses of the skin, eyes, ears, nose, throat, respiratory, gastrointestinal, cardiovascular and genito-urinary systems. HCP must \\Fdho-05\dataI\06864000\CPMT\WORDPROCUOBSPEC\GPS\REVO\OEDICAL.DOC Page ll-1 I of 59 understand relationship of illness with ability to perform usual duties and recommend appropriate restrictions. HCP must understand the usual course of common illnesses and discuss conditions which worsen or do not resolve within the expected period of time with an external consulting physician. (3) Dental Care HCP must have training and experience in the provision of limited routine dental care; particularly in management of common problems (e.g. caries, extraction) and stabilization of more serious problems (e.g. abscess, maxillofacial trauma) pending referral. (4) Local Environmental Health Risks and Endemic Diseases HCP should have knowledge and experience to recognize, prevent, and treat, as appropriate, medical problems which may be unique to the operational area such as: - adverse reactions to climate, vegetation, insect and other vectors (e.g. heat stroke, sunbum, hypothermia, frostbite, hypersensitivity reactions to plants, stings, and venom); - diseases transmitted by insects and other vectors (e.g. malaria, Japanese B encephalitis, dengue fever, etc.); - local public health and hygiene practices (e.g. gastrointestinal diseases related to food and water contamination, sexually transmitted diseases). d. Illness and Injury Prevention The incidence of medical problems related to accidents and ignorance can be reduced by: raising hazard awareness, providing specific training, instituting the use of preventive devices and procedures, encouraging healthy behavioral and lifestyle changes, and conducting systematic inspections for unsafe or unhealthy conditions. (1) Health Promotion HCP must have some training and experience related to public health and understand the importance of health promotion and illness and injury prevention at the remote worksite. HCP must be able to integrate preventive services into the normal course of medical support duties (e.g. health promotion programs, first aid and CPR training/refreshers for supervisors, and immunization updates, if required). \\Fdho.O5\datal\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVOWMEDICALDOC Page 111-12 of 59 (2) Site Inspection HCP must have experience conducting systematic worksite inspections to evaluate new occupational health and hygiene concems (e.g. catering, sanitation, vector control) to assure that all activities and operations which may impact health are in compliance with accepted standards. HCP must produce reports in accordance with local management requests. 2.2.4 Duties and Responsibilities a. General Responsibility The HCP will be responsible to the local remote site management for. - Delivery of quality non-emergency and emergency medical care to all personnel at the worksite. - Ensuring that personal conduct and appearance meet the highest professianai standards at all times. - Bringing to-attention of the local management all matters relevant to the health and well-being of the workforce with approptiate respect for individual privacy and medical confidentiality. - Producing regular reports on clinic utilization, accidents and injuries, and site health and hygiene inspections. b. Specific Duties The specific duties include: (1) Emergency Care HCP is responsible for: - Assessment and immediate treatment of serious illness or injury. - Liaison with best available local medical personnel, for emergency support and resources, if required. - Requesting medical evacuation of ill or injured personnel, when necessary (see 2.4.1). (2) Primary Care \\Fdho-05\datalo68640oo\cPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-13 of 59 ... .. ....AL SERVICE GUIDE..... . OR R....E SITS. HCP is responsible for - Providing clinic access and service for minor illness or injury including assessment, treatment, and regular follow-up of all cases until complete resolution. - Ensuring appropriate referral of cases which have not resolved as expected. - Keeping a detailed and factual medical record of all cases seen including diagnosis, treatment given, and final disposition, and applying appropriate confidentiality to the record. (3) Sick Bay ManaQement HCP is responsible for - Maintaining the sick bay in a clean and tidy state of readiness at all times. - Providing day-to-day operation and organization of the sick bay. - Ensuring that all medical equipment is in working order and properly maintained. - Monitoring inventory of medications and other supplies. - Maintaining and storing of all documentation and records related to the provision of medical services, including patient records. - Maintaining a controlled drug register in compliance with applicable laws and regulations. (4) First Aid Training HCP is responsible for: - Coordinating first aid training or refreshers for designated personnel to ensure their knowledge and skills are maintained at an appropriate level. - Arranging for periodic simulated exercises and drills for first aid personnel. - Ensuring that first aid equipment (e.g. eye wash bottles, emergency showers, first aid boxes, etc.) is maintained and checked on a regular basis. (5) Food Hvcgiene HCP is responsible for. - Advising local management on matters relating to food hygiene which include food handling and storage. - Ensuring food supplies, storage and preparation meet accepted standards \\Fdho-05\datal\06864000\CPNIRWORDPROC\JOBSPEC\GPS\REVO\MEDICAL.DOc Page 111-14 of 59 (e.g. temperatures). - Carrying out periodic audits (e.g. weekly) of the kitchen and mess areas with appropriate reporting to local management and catering staff. - Ensuring that all food handlers are medically fit for duty (e.g. absence of acute or chronic illness). - Alerting local management about any outbreaks of gastrointestinal illness that may be related to food or water. \\Fdho 05\datai\06864000\CPMT\WORDPROCUOBSPEC\GPS\REVOMEDICAL.DOC Page 111-15 of 59 (6) Environmental Health HCP is responsible for: - Periodic sampling of potable and other water supplies to ensure compliance with accepted standards (e.g. residual chlorne). - Conducting periodic inspections (e.g. monthly) to ensure that proper sanitation and solid waste treatment practices are being followed. - Ensuring appropriate disposal of clinical waste in compliance with applicable laws and regulation. - Ensuring, in conjunction with local management, that appropriate control measures for vector-borne diseases (e.g. malaria) and/or zoonoses (e.g. rabies) are in place. (7) Occupational Health HCP is responsible for: - Alerting local management about occupational materials or processes which may be hazardous to health. - Assisting with company-sponsored health surveillance programs for employees who are exposed to specific hazards. - Investigating, under the direction of local management, suspected occupational illnesses and injuries. - Educating the workforce about health hazards and the proper use of personal protective clothing and equipment (8) Drug and Alcohol Policy HCP is responsible for: - Collection of urine and/or blood specimens from employees or prospective employees in accordance with the procedures set forth in the Company Alcohol and Drug Use Policy (see Appendix IV - Alcohol and Drug Testing Collection Procedures). (9) Industrial Hygiene HCP is responsible for - Assisting local management and safety personnel in the measurement and monitoring of occupational health risks (e.g. noise monitoring) under guidance \\Fdho-05\datal \06864000XCPIMTWORDPROCUOBSPEC\GPS\REVO\MEDtCAL.DOC Page 111-16 of 59 of the Esso physician advising the operation. k\FdhO5\data1\06864000\CPMhTWORDPROCUOBSPEC\GPS\REVO\MEDICAL.OOC Page 111-1 7 of S9 (1 0) Counseling HCP is responsible for: - Offering counseling services (within his/her skill levels) to employees, and protecting confidentiality as appropriate. - Ensuring onward referral, where appropriate, of employees with emotional or adjustment problems that may affect fitness for duty or workplace safety. (11) Health Education and Health Promotion HCP is responsible for: - Advising employees on general matters relevant to their health and well-being. - Presenting information to employees on healthy lifestyle (alcohol, drugs, smoking, diet, weight control, exercise, etc.) or other health-related topics (blood pressure, cholesterol and heart disease, communicable diseases, etc.). (12) Immunization/Chemoprophvlaxis Program HCP is responsible for - Ensurng that appropriate immunization/chemoprophylaxis recommendations are understood and implemented by the workforce, as required (e.g. immunization for Hepatitis B, prophylactic medication for malaria). (13) Disaster Planning HCP is responsible for: - Understanding role in site emergency response and disaster plan. - Ensuring that an area for triage and multiple casualties is identified. - Ensuring that critical medical supplies and equipment are pre-packed and available for emergency use at dispersed sites or during patient transport. - Participating in simulation exercises organized by local management. (14) Administration HCP is responsible for: - Ensuring an effective and organized delivery of medical services through a \\Fdho-O5\data1'664000\CPMT\WORDPROC\JOBSPEC\GP5\REVOWIEDICAL.DOC Page 111-18 of 59 self-audit program. - Securing and protecting confidential medical information. - Maintaining inventory control and security, and arranging for resupply at appropriate intervals. - Tracking and reporting data on clinic utilization and hygiene inspections. - Recording occupational illnesses and injuries in accordance with applicable laws and regulations and with local management guidance. - Assisting local management on appropriate non-medical tasks, upon request, at those times when not engaged in clinically-related activities. 2.3 FACILITIES AND EQUIPMENT The following general specifications for facilities, medication and equipment are recommended for delivery of health and medical services in remote locations. 2.3.1 Facilities The remote site clinical facility should include a sick bay with designated areas for consultation, physical examination, simple/basic laboratory tests, storage of supplies, in-patient bed(s), toilet and shower. The actual design and size of the set- up will vary based upon the particular health risks at the location and the number of covered personnel. Sleeping quarters for HCP should be in close proximity to the sickbay. A typical sick bay layout, as shown in Appendix I, should include: a. Hot and cold potable water supply. b. Adequate work surfaces, laboratory space and cupboard for safe and efficient storage of equipment and medication. c. Clean consultation and treatment/procedures room with-an examination table and chair. d. Sheltered waiting area. e. In-patient bed(s). f. Toilet and shower. g. Adequate room lighting and proper overhead/portable examination light. h Emergency lighting/backup power. i. Climate control and adequate ventilation. j. Lockable cabinet for storage of medical records. k. Lockable cabinet for medication storage. I. Lockable refrigerator to keep certain medications and vaccines. m. Telephone, fax and radio communication. \\Fdho 05\data1l06864000\CPM.RWORDPROCUIOBSPEC\GPS\REVO\MEDICAL.DOC Page 1Il-19 of 59 .MEDBg A .SRsfC GUDLIE FO s _T s Xr jB' n. Environmental protection (e.g. sun shades, proper insulation). It should also be sealed from penetration by insects/vermin. 0. Easy accessibility to all patients (e.g. central location, stretcher/wheelchair access). p. Adequate patient privacy. 2.3.2 Drugs and Equipment a. Sick Bay The minimal equipment required in the sick bay will be similar for any remote iocation; however, the quantity of available medications and supplies will depend upon: -Number of personnel at the work location - Distance from the nearest acceptable medical facilities - Frequency and time required for resupply Suggested lists of medications and equipment are included in Appendix 11. These medications should include cardiac preparations, antibiotics, antiemetics, analgesics/anti-inflammatories, muscle relaxants, antihistamines, decongestants, steroids, bronchodilators, analeptics, topicals, ophthalmologicals, otorhinolaryngologicals, intravenous solution and miscellaneous items. The soft goods package should include dressings, bandages, suture materials, respiratory, orthopedic, dental, intravenous and miscellaneous items. Anti-malarials will be required. b. Dispersed Sites Illness or injury may arise at work locations at some distance from the sick bay (e.g. fly camps). Consideration should be given to locating some critical items of equipment at pre-determnined sites, taking into account: - Size of installation/work area, - Layout of installation/work area and time/distance from sickbay. - Number of personnel working in different locations and nature of work being performned. First aid boxes, eye wash bottles, and, as appropriate, emergency showers should also be located at key sites in the work area and should be: - Clearly identified. \\Fdho-O5\data1'06864000\CPMT\WRORPRcO85OBPEC\GP5\REV0\MEDlCAL.DOC Page 111-20 of 59 - Regularly checked by the HCP or designated person. First aid boxes should contain the following items: - Individually wrapped bandages. - Eye pads with attachments. - Individually wrapped triangular bandages. - Sterile unmedicated wound dressings. 2.3.3 Organization and Management The HCP must be familiar with the field operation and work with local management to ensure smooth and efficient operaton of the medical facilities. a. Maintenance of Facility The HCP must ensure that - The sick bay is maintained in a clean and tidy state of readiness at all times. - Arrangements are made for the cleaning/disinfecting of floors and toilet facilities on a twice daily basis and at additional times as required. - All working surfaces are thoroughly cleaned on a daily basis and after each treatment as appropriate (e.g. to control blood bome pathogens). - Appropriate arrangements are made for the laundering of sick bay linen. - Arrangements are made for the regular disposal of garbage. - Disposal of contaminated material is carried out in accordance with applicable laws and regulations and in an appropriate manner so as to control blood bome pathogens. - "Sharps" are stored in a specific container designed to receive such consumables safely and disposal is in accordance with applicable laws and regulations and company procedures (e.g. to contro1 blood bome pathogens). - Any defects in the fabric, heating, fighting or ventilation of the sick bay are brought to the attention of local management immediately. - Medical items are properly kept/secured at all times to prevent unauthorized access! use. b. Access by Patients - The sick bay should be clearly identified for the benefit of all personnel. - The HCP should hold regular clinic hours at appropriate times taking into account shift patterns and ensure that all employees are aware of these times. \\Fdho-05\datal \06864MOOXCPMT\WORDPROC'JOBSPEC\GPS\REVOUMEDICAL.DOC Page 111-21 of 59 - The HCP should be available for service 24 hours a day by radio or beeper and ensure that all personnel are aware of procedure for obtaining care at any time. c. Maintenance of Equipment The HCP should ensure that: - A complete inventory record of all items of medical equipment is maintained, including dates on which servicing or calibration is required. - All items of equipment are checked and serviced or calibrated as appropriate on a regular basis to ensure efficient operation. d. Inventory Control The HCP should ensure that - Appropriate stock control levels of medications are maintained at all times. - A system is maintained for the rotation of stock and identification of out-of-date drugs. - Arrangements are in place for the resupply of drugs and materials in accordance with the local regulations. - All requests for supply of drugs and materials are signed by the HCP and approved by local management. - All requests for new or altemate medications or supplies are discussed with the Esso physician advising the operation. - The proper indications and use of all medications at the work location are clearly understood and labeled in a language that the HCP can read. e. Controlled Drugs In certain countries, the supply and use of controlled drugs (e.g. narcofic analgesics) is governed by applicable laws or regulations. The HCP should ensure that - All requests for resupply of controlled drugs are brought to the attention of the Esso physician advising the operation. - Controlled drugs are hand-carried to the work location by the HCP, or an approved person, accompanied by the appropriate documentation. - Controlled drugs are stored in a secure, locked container fixed to the floor or wall, and the keys held by the HCP and/or local manager. - A signed and dated controlled drug register is maintained with information on \\Fdho 05\datal\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\IEDICALDOC Page 111-22 of 59 name of drug, strength, and quantity. - Stocks of controlled drugs are checked periodically with appropriate entries in the register after any usage (e.g. date, patient name, dosage, drug remaining in stock, and HCP signature). - Expired controlled drugs are disposed of in accordance with applicable laws and regulations and with appropriate documentation and register entries. 2.3.4 Transportation This includes ground, water and air transportation, as required to ferry the HCP, the sick/injured personnel, and the supplies from one place to another. The appropriate mode of transportation will depend upon availability, weather conditions, time of day, and various other factors such as the severity and stability of the medical condition. \\Fdho 05\data1XO6864OOO\cPMT\wORDPROcUOBSPEC\GPS\REVO\lAEDIcAL.DOc Page 111-23 of 59 a. Ambulance The HCP should have ready access to an ambulance or a fully equipped modified vehicle capable of carrying at least two ill or injured persons from work sites, heliport, airport or sea base to the sick bay or to another provider facility or to airport for medevac on a 24 hour basis. The means of accessing or acquiring the vehicle should be determined in advance in consultation with company management. The ambulance should meet the following requirements: - Properly maintained and mechanically reliable. - Ability to navigate the local terrain safely. - Availability of a trained and experienced driver, familiar with the direct and altemate routes. - Radio communication at all times. - One properly secured stretcher with blanket. - Adequate space for a health professional to render care in transit. - Easy access for stretcher in/out of ambulance. - Adequate ventilation and temperature control. - Designated locafions in the cabin to properly secure accessible life support equipment, including: + Oxygen/suction with AC/DC capability + Intravenous drip stand/hook + Monitor defibrillator with AC/DC capability + Intravenous fluids and other advanced life support medications + Dressings, splints, cervical collars and spinal board b. HelicopterlFixed Wing Aircraft or Boat Depending on the location (onshore or offshore) and how remote it is, air or water transportation may be preferable to a ground ambulance. In this case, a helicopter/fixed wing aircraft or boat, as applicable, should be made available/accessible on a 24 hour basis. The helicopter/aircraft or boat should have similar features as those outlined for the ground ambulance. 2.3.5 Communication a. Telephone/Fax Machine The sick bay should have a reliable national and intemational telecommunication linkage, including the capability of fax and modem transmission. \\Fdho-05\datal \06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\AMEDICALDOC Page 111-24 of S9 ...------ -------G S Pe-of \NFdho-OS\datal\06864OoXCPNMlTWORDPROC\UOBSPECXGPS\REVO\MEDICAL.DOC Page 111 -25 of S9 ~~~~~~~~~~~~~. . . . . . . . . . . . . . . . .. ... b. Radio Communication Radio communicafton must be established between the various worksites, the sick bay, and the ambulance. The HCP must carry a hand held radio/beeper or equivalent at all times. 2.4 PROCEDURES To assure adequate delivery of health care in a remote environment, the HCP must have access to professional operating protocols, procedures and reference materials. These items are essential to maintain consistency, operational standards, and practices. 2.4.1 Medical Evacuation a. Management of Medical Problems at Remote Sites Most minor illnesses and injuries arising at the remote site can be adequately treated by the HCP, in consultation with an extemal consulting physician, as required. In managing such cases, the HCP must determine: - Whether the existing medical condition will affect the individual's fitness for duty. - Whether any necessary treatment may affect the individual's fitness for duty. - How long the medical condifion may take to resolve. In cases where a minor medical condition renders an individual unfit for duty but does not require medical evacuation referral, it is important that the HCP discuss with local management whether the individual should remain at the remote work location (e.g. in the sick bay) while the condition resolves. This decision may depend upon a number of factors, including: - How confident the HCP may be that the individual will become fit for duty within a specified/defined period of time (e.g. 24 or 48 hours). b. Indications for Medical Evacuation \'Fdho-05data1 \06864000\CPMT\WORDPROCUOSSPECNGPS1REVOUEDICAL.DOC Page 111-26 of 59 The need to evacuate an individual to an acceptable medical facility may be determined by a number of factors, including: - The need for critical or convalescent hospital care or other appropriate specialty care. - The need for further examination and investigation to deternine the diagnosis. - Ukely fitness for duty within a limited/specified period. \\Fdho-05\data1\068540OO\CPMT\WORDPROCUOBSPEC\GPS\REVO'MEDICAL.DOC Page 111-27 of 59 -~~~~~- ....A.SER .....E....FO...EM.E. c. Transportation Issues The need for safe, medically appropriate, and properly planned transport far outweighs any indication for speed. The HCP, in consultation with the external consulting physician, will recommend the timing and type of transport based on at least the following factors: - Assessment of the seriousness and stability of patient's condition. - Risk associated with transport (e.g. altitude, bumpy roads). - Time of the day (e.g. limitations on night time travel). - Weather conditions, present and predicted. Before any decision is made to mobilize a vehicle, aircraft or boat in any adverse conditions, the HCP, extemal consulting physician, Esso physician advising the operation and local management should assess the risk of delay to the patient and consider the risk to others involved in the evacuation. d. Procedures to be Followed by the HCP: When the HCP identifies the need for medical evacuation of an illAnjured individual, the following procedures should be followed: - Discuss the clinical situation and reception arrangements with the extemal consulting physician and the Esso physician advising the operation. - Advise local management of the expected medevac and request that appropriate transportation arrangements be initiated. - Request management authorization for onward intemational evacuation, if required (local management will activate EMERS to seek endorsement from the Esso physician on call). - Prepare an appropriate referral note to the receiving physician. - Ensure that the patient is medically stabilized for transportation. - Advise receiving physician of likely estimated time of arrival of patient. - Make arrangements for an escort to accompany patient. - Fully brief and provision (e.g. medications, equipment, and supplies) the individual who will escort the patient on the medevac. - Accompany patient to the vehiclelvessel/aircraft and ensure that the driver! captain is advised of any specific requirements regarding transportation (e.g. altitude limitations). e. Medical Escorts It is important that any ill/injured patient be accompanied during transport by a \\Fdhoa05\datal\8864000\CPMT\WORDPROCUOBSPEC\GPS\RE\tO\MEDICAL.DOC Page 111-28 of 59 capable escort who is aware of the medical problem and is properly trained and provisioned to deal with all predictable problems which might arise during the journey. The selection of the escort must be based upon the seriousness and stability of the condition. An escort with acceptable training and experience for a less serious problem might be a supervisor or coworker with advanced first aid training. The HCP may need to serve as the local escort in serious or unstable cases. In such situations the HCP and local management should arrange for best available on-site backup support in the absence of the HCP. As soon as the case has been transferred, local management should arrange for the HCP to be promptly returned to the remote site. f. Reception Prior to departing from the operational area, the HOP and the external consulting physician will determine whether the patient should be: - Transported directly to the best available local medical facility or to another fpacility with an equal or greater level of care. - Examined immediately by the receiing physician upon arrival (e.g. at the htarborbheliportlairport) or transported to the receiving medical facility for initial evaluation. Where ambulance transportation is required for the journey from harbor/heliport/ airport to hospital, this should be organized by the receiving doctor. Following examination/assessment, the receiving physician will render an opinion as to whether the individual: - Requires onward evacuation for further evaluation and/or treatment. - Should retumr to home country or elsewhere for convalescent care and management. - Is fit to return to the remote work location and resume usual or restricted duties. g. Assessment of Fitness for Dutyr If the receiving physician considers that an individual has made an appropriate recovery and is ft to return for usual, alternate or limited duties, the case must be reviewed by the Esso physician advising the operation and local management to \\Fdho-O5\data1XO6864OOO\CPM9T\WORDPROC\iOB5PECXGPS\REVO\MEDLCALDOC Page 111-29 of 59 ensure that there is no residual problem or medication requirement which may affect fitness for usual, alternate or limited duty. The Esso physician advising the operation must review and document any plan for return to duty with local management and the remote site HCP. \\Fdho-05\data1\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVOWIEDICAL.DOC Page 111-30 of 59 ......a ; . EDI-A. SE> ~E GUfEIE FO RE OI .SITES:::.':: ..:: :. ... 2.4.2 Standard Operating ProcedureslProtocols A non-physician HCP working in a remote location, must carry out medical service duties independently without assistance or direct supervision of a physician. The HCP should therefore operate in accordance with a set of written standing orders prepared and/or endorsed by the extemal consulting physician. The standing operating protocols should: - Detail all clinical practice and procedures normally outside the scope of a supervised HCP. - Be reviewed, understood and signed by the HCP. - Be updated as appropriate to reflect generally accepted changes in clinical practice or procedures. A set of standing orders should be held by the HCP and the Esso physician advising the operation. The standing orders should cover the following procedures: a. General Protocols - General medical protocol. - General advanced life support. - Apparent death due to injury. - Paramedic-physician consultation. b. Specific Protocols - Cardiac Protocols + Ventricular fibrillation + Ventricular tachycardia + Asystole + Idioventricular rhythm + Electromechanical dissociation + Bradycardia + Paroxysmal supraventiiculartachycardia + Premature ventricular contraction + Atrial flutter/fibrillation + Cardiogenic shock + Angina pectoris/myocardial infarction + Non-viable cardiac arrest + Fluid challenge + ACLS infusions \\Fdho 05\datal\O6864OOO\cPMT\wORDPROc\JoBsPEc\GPS\REVO\MEDICAL.DOC Page 111-31 of 59 MEDICAL SERVICE1 .GUIDEU-.NES OR REOE 1 E Neurological/Psychiatric Protocols + Seizures + Stroke + Psychosis/depression/emotional upset Metabolic Protocols + Poisoning and overdose + Hyperglycemia + Hypoglycemia + Heat stroke + Hypothermia Respiratory Protocols + Upper airway obstruction + Acute allergic reactions/anaphylactic shock + Acute bronchospasm + Corrosive gas inhalation + Asphyxia + Acute pulmonary edema + Pneumothorax Gastrointestinal/Genito-Urinary Protocols + Acute abdomen + Acute gastroenteritis + Hepatffis + Intestinal obstruction + Peptic ulcer disease + Inguinal hernia + Kidney stones Eye, Ear, Nose, Throat Protocols + General ophthalmology + Otitis extema/media + Ear syringing + Sinusitis/pharyngitis + Epistaxis + Dental caries, appliance failure, infection Trauma Protocols + Head trauma \\Fdho-05\datal \06864000\CPMT\WORDPROCUOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-32 of 59 + Spinal trauma + Thoracic trauma + Abdominal trauma + Fracture stabilization + Major bums + Suturing + Hemorrhage + Amputations + Local anesthesiatanalgesia + Minor bums + Blisters - Tropical Disease Protocols + Treatment of infectious disease + Infected wounds + Insect bites + Snake bites + Malaria Protocols must be properly stored and readily accessible for reference at any time. c. Reference Materials Reference materials in the form of standard medical textbooks and periodicals/ joumals must be properly stored and available for reference at any time. Provision for computer-based information (e.g. CD-ROM) and Intemet access should also be considered. 2.4.3 Administration The HCP must be familiar with local administrative guidelines and work closely with local management. The responsibilities and reporting relationships of the HCP must be clearly understood by all remote site supervisory personnel. a. Working Relationships The following aspects of working relationships should be clarified by the HCP: \VFdho 05\datal \0664ooo\cPMTMwoRDPRoC\uoBsPEc\GPs\REvoWMEDIcAL.oDoc Page 111-33 of 59 (1) HCP and Local Manager The HCP should have direct contact with the local remote site manager or a designated supervisor for day-to-day work guidance and obtain professional guidance from the external consulting physician and the Esso physician advising the operation. The HICP's relationship with local remote site management is important and requires the development of mutual trust and recognition that: - The HCP has a unique professional position at the remote site. - Medical confidentiality regarding non-occupational health concems should be preserved and individual privacy respected. In cases where health and safety of others may be a concem (e.g. contagious disease), local management must be kept informedladvised accordingly. (2) HCP and The Extemal Consulting Physician The extemal consulting physician must be available to provide clinical support to the HCP at all times. Once the HCP requests support from the extemal consulting physician, the HCP should carry out the recommendations of the extemal consulting physician to the best of 'his/her ability. In order for this relationship and subsequent patient management to be successful: - The extemal consulting physician and the HCP must have an established professional relationship (e.g. prior meeting and discussion about clinical strengths and limitations, and regular meetings thereafter). - The HCP must call the external consulting physician during the early phases of a clinical problem. - The HCP must carry out a detailed and well documented history and \\Fdho-05\datab168640O\CPMT\WORDPROCUOBSPEC\GPS\REVO\MEDICALDOC Page I11-34 of 59 examination. - The extemal consulting physician must provide clear advice and ensure that the HCP has understood and documented that advice. - The extemal consulting physician and the HCP should share a mutual interest in clinical outcome information and maintain communication regarding ongoing clinical problems. (3) HCP and The Esso Physician Advising The Operation The HCP should recognize a professional relationship with the Esso physician advising the operation and ensure that - All clinical concems regarding Esso personnel are communicated in a timely manner. - Any operational concems or requests for assistance are communicated in a timely manner. (4) HCP and First Aid Personnel First aid personnel, properly trained and designated by local management, should be available in all operational areas to assist the HCP in responding to severe illness or injury, as required. The HCP should be recognized as the first aid team leader. In order for this relationship and subsequent patient management to be successful: - The HCP must meet regularly with all first aid personnel. - The HCP should organize and participate in ongoing training of first aid personnel. - The HCP must clearly communicate roles and responsibilities in the event of a medical emergency. (5) HCP and the Workforce The HCP must be prepared to eam the respect and trust of the workforce. In order to be effective the HCP must: \\Fdho-05\datal\06864000\CPMTVWORDPROCUOBSPEC\GPS\REVO\MEDICALDOC Page 111-35 of 59 - Communicate clearly with the workforce and raise awareness about the roles, responsibilities, and operation of the remote site medical service. - Understand the working environment and operations. - Maintain a professional attitude and appearance at all times. - Display appropriate compassion and understanding for every member of the workforce, without discrimination. - Preserve appropriate medical confidentiality for non-occupational health concems and respect individual privacy. b. Documentation and Medical Record Keeping The ffCP is responsible for preparing or maintaining: (1) Confidential Medical Records Detailed and factual medical records must be kept on all clinical interactions, discussions, and consultations in order to: - Ensure effective management of ongoing medical conditions. - Provide proper continuity of care. - Enable identification of possible work-related illness. These records should be treated appropriately, must be stored in suitable locked cabinets/containers, and be accessible only to medical personnel. The HCP should maintain a confidential medical file for each employee at the remote site with the following information: - Name - Date of birth - Job Title - Employer - Address - Name and address of personal doctor, if available - Any known allergies - Significant past medical history - Present treatment/medication - Blood group, if known The HCP should update the employee medical file after each clinical encounter with the following information: \\Fdhoa05\data1\06864000OCPMT\WORDPROC\JOBSPECXGPS\REVOWEDICAL.DOC Page 111-36 of 59 - Date and time - History of present illness - Findings on clinical examination - Details of any extemal physician consultation - Provisional diagnosis - Treatment and/or advice offered to the patient - Follow-up recommendations/disposition Medical record files on Esso employees should be transferred to the Esso physician advising the operation when the employee completes the remote site assignment. (2) Daily Sick Bay Attendance Record A daily log of personnel reporting to the sick bay should be maintained by the HCP so that clinical services utilization can be analyzed. This information will be distributed to non-medical personnel; therefore, the log should not contain confidential medical information regarding specific diagnoses and treatment. It should include: - Employee name and job title - Employeres name - Date and time of attendance - Diagnostic category (e.g. major or minor illness or injury; with or without treatment) - Disposition (3) Medical Evacuation Notification and Records When an individual requires medical evacuation, the following documentation will be needed: (i) Communication to Management Since this information will be distributed to non-medical personnel, the records should not contain confidential medical information regarding specific diagnoses and treatment. It should include: \\Fdho-)Sldatai\06864000\CPMT\WORDPROCUOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-37 of 59 - Employee name - Whether condition is illness or injury - Method of transportation - Time of arnival to the place of referral - Reception arrangements ( e.g. walking, wheelchair, or stretcher) - Name of receiving physician and medical facility - Names of remote site supervisory personnel who have been informed (ii) Referral Note from the HCP to the Receiving Physician The HCP must always send a referral note to the receiving physician with the following information: - Patient details: name, address, date of birth, name of patient's private doctor, if available - History of present illness and relevant past medical history - Findings on clinical examination - Provisional diagnosis - Details on any treatment given The HCP must retain a copy of the note in the patients confidential medical record file. (4) Accident Notificafton The HCP should clarify local management expectations regarding what and when information must be reported after an illness or injury occurs at the remote site. (5) Iniury/Ililness Statistics It is important to gather data which will permit measurement and analysis of illness and injury trends and statistics in order to: - Identify areas which may require further investigation - Identify illness which may be arising as a result of occupational exposure - Determine whether preventive or remedial measures are effective at controlling illness and injury. The Esso physician advising the operation should assist local management in the interpretation of this data. \\Fdho-05\data1\06864000\CPPMTWORDPROCUOBSPECXGPS\REVO\MEDICAL.DOC Page 111-88 of 59 c. Inventory of Supplies The HCP must maintain a written inventory of medications, supplies, and equipment. This inventory should include: (1) Date of initial supply or resupply (2) Name and description of each individual item (e.g. indicate dosage form and strength of medications) (3) Quantity (4) Manufacturer (5) Expiration date, where appropriate (6) Service date (including battery recharging and testing, where appropriate) (7) Balance in stock by date For controlled drugs, a separate page should be maintained for each drug, and it should be administered in accordance with applicable laws and regulations (see 2.3.3 e). d. Checklists Written checklists for varous activities/inspections (e.g. industrial hygiene, food hygiene and environmental health ) should be established or adopted and used regularly to ensure consistency and to document completion of the task. Examples of the relevant checklists are shown in Appendix Ill. \\Fdho-O5\datal\06864000\CPMT\WORDPROCUOBSPEC\GPS\REVOWIEDICAL.DOC Page 111-39 of 59 APPENDIX 1. RECOMMENDED SICK BAY LAYOUT \\Fdho-05\data1\06864000\CPMT\W ORDPROC\JOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-40 of 59 -~~ EDCL -hIEGIEIE O Shelf ~ ~~~~Work Surface ___________ and Cabinet Waiting Frldgshower _l Area File Sink Cabinot E & Treatment t Sholf CZ Scale ArbOC Area Table Chair E Store Shelf Chair Room Desk \\Fdho-05\datal \06864000\CPMT\WORtJPROC~JOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-41 of S9 APPENDIX 11 RECOMMENDED LIST OF DRUGS AND EQUIPMENT The following are lists of drugs and equipment recommended for remote sites. They should be used as a guideline to help define site-specific inventories, since a single set of minimal requirements would not likely meet the needs of any individual operation. The selection and numbers of individual inventory items should be made by the HCP and the external consulting physician; however, the final inventory must be approved by'the Esso physician advising the operation. The most critical drugs and equipment should be on- site and operational when the delivery of services is set to begin. Certain critical medical supplies and equipment should be pre-packaged and made available for emergency use at dispersed sites or during patient transport. The Drug List (A) corresponds to select categories of drugs found in the Physician's Desk Reference (PDR) which are likely to be useful in the management of emergencies and acute routine medical problems. Examples are given of specific drugs in each category that might be considered for the remote site pharmacy. The selection of a particular drug within a given category should be based in large part upon the preferences and experience of the HCP. Drugs which are used for the treatment of chronic medical problems are not required at the remote site. Any individual visiting or residing at the remote site with a chronic medical problem requiring regular treatment, should be advised to carry sufficient quantities of necessary medications to last the duration of their stay. The lists of Equipment (B) and Soft Goods (C) detail the specific items recommended for the remote site which are likely to be useful in the management of emergencies and acute routine medical problems. They should be acquired, maintained, stored, administered and disposed of in accordance with applicable laws and regulations. The addition, deletion, or substitution of items should be based in large part upon the preferences and experience of the HCP and the extemal consulting physician. A. DRUG LIST 1. Analgesics Acetaminophen Aspirin NSAIDS, e.g.: Ibuprofen \\Fdho-05\datai \06864000\CPMT\WORDPROCUJOBSPEC\GPS\REVOW\EDOCAL.DOC Page 111-42 of 59 Mefenamic acid Naproxen \\Fdho-05\data1l06864000\CPMT\WORDPROCUOBSPEC\GPS\REVOMNEDICALDOC Page 111-43 of 59 Narcofic e.g.: Meperidine Nalbuphine Pentazocine 2. Anesthetics Local, e.g.: Bupivacaine Mepivacaine Topical, e.g.: Benzocaine Emla cream Ethylchloride spray 3. Anorectal Products Creams, e.g.: Analpram-HC Anusol-HC Suppositories, e.g.: Anusol-HC 4. Antacids and Antifiatulents AntacidlAntiflatulent combinations, e.g.: Mylanta Simethicone 5. Antibiotics, Systemic Cephalosporins, e.g.: Cefadroxil Cefaclor Cefotaxime Ceftriaxone Macrolides, e.g.: Erythromycins Penicillins, e.g.: Amoxicillin Ampicillin Augmentin (Amoxicillin/Clavulanate) Penicillin Unasyn (Ampicillin/Sulbactam) \\FdhoO05'data1 \06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-44 of 59 L $ ~~~~R ~~~C ~~~U JD E IiN .~~~~~~................. Quinolones, e.g.: Ciproflaxacin Ofloxacin \\Fdho-05\datal \06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICALDOC Page 11145 of 59 Sulfonamides, e.g.: Cotrimoxazole Tetracyclines e.g.: Doxycycline Minocycline Oxytetracycline 6. Anticoaaulants e.g.: Heparin Lock Flush'Solution Heparn Sodium Injection 7. Antihistamines e.g.: Astemizole (Hismanal) Chlorpheniramine maleate Diphenhydramine (Benadryl) Hydroxyzine (Atarax) Loratadine (Claritin) 8. Anti-inflammatory Agents Non-Steroidals e.g.: Ibuprofen Mefenamic acid (Steroidals: see (23): Hormones-glucocorticoid) 9. Antiparasitics Lice e.g.: Kwell Cream & Lotion Lindane shampoo Scabies e.g.: Crotamiton (Eurax) Lindane Lotion Helminths e.g-: Mebendazole Thiabendazole Protozoa e.g.: Anti-malarial: Chloroquine Mefloquine \\Fdho-5data1\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-46 of 59 Pyrimethamine Sulfadoxine/pyrimethamine (Fansidar) Other - Metronidazole (Flagyl) 10. AnfisePtics e.g.: Chlorhexidine Povidone-iodine 11. Antispasmodics & Anticholiner_ics e.g.: Dicyclomine Ubrax (Roche) Propantheline 12. Antivirals, Systemic e.g.: Acyclovir 13. Biologicals Antiserum e.g.: Antivenin Antivenin (Crotalidae) Polyvalent Toxoids e.g.: Diphtheria & Tetanus Toxoids Diphteria & Tetanus Toxoids & Pertussis vaccine Tetanus Toxoid Adsorbed Vaccines e.g.: Cholera Vaccine Engerix-B Rabies Vaccine Typhoid Vaccine 14. Cardiovascular Acents Adrenergic Blockers e.g.: Phenoxy-benzamine Prazosin Adrenergic Stimulants e.g.: Adrenaline \\Fdho-OS\data1\06864000\CPMT\WORDPROCUOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-47 of 59 Cionidine Angiotensin Converting Enzyme Inhibitors e.g.: Captopril Enalapril Antiarrhythmics e.g.: Adenosine Lidocaine Procainamide Verapamil Beta Blockers e.g.: Atenolol Propranolol Calcium Channel Blockers e.g.: Nifedipine Diuretics e.g.: Furosemide Thiazides Vasodilators, e.g.: NitroGlycerin Nitroprusside 15. Cold & Couah Preparations Antihistamines e.g.: Terfenadine Phenergan with Dextromethorphan Antitussives e.g.: Bromfed Cough Syrup (Muro.) Decongestants e.g.: Pseudoephedrine Expectorants e.g.: Guaifenesin 16. Dental Preparations e.g.: Hurricaine Topical Anesthetic 17. Dermatolonicals Antibacterials e.g.: Nitrofurazone cream Sulfamylon cream Antibiotics e.g.: Clindamycin \\Fdho-O5\data1\068640OOOCPMT\WORDPROC'JOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-48 of 59 Gentamycin Anti-inflammatory Agents e.g.: Hydrocortisone Bum Relief e.g.: Silvadene Cream Cleansing Agents e.g.: Povidone-iodine pHisoHex Dandruff Medications e.g.: Selenium Sulfide Lotion Fungicides e.g.: Clotrimazole Nystatin Herpes Treatment e.g.: Acyclovir Moisturizer Pruritus Medications e.g.: Betamethasone Triamcinolone 18. Diarrhea Medications e.g.:Loperamide Pepto-Bismol 19. Electrolytes Fluid Replacement Therapy e.g.: Oral Rehydration Solution 20. Fungal Medications e.g.: Griseofulvin Nystatin 21. Acute Gout Treatment e.g.: Colchicine 22. Histamine H2 Receptor Antagonists \\Fdho 05\data1\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICALDOC Page 111-49 of 59 > e-.a>-.a.v;'.................. .. =s-- l: e.g.: Cimetidine Ranitidine 23. Hormones Glucocorticoid e.g.: Medrol C)osepak Oral-Prednisolone Injection e.g.: Dexamethasone Methylprednisolone Hyperglycemic Agents e.g.: Glucagon \\FdhOOS\data1\0686400OXCPMlTRWORDPROC\JOBSPEC\GPS\REV0O\EDICAL.DOC Page 111-50 of 59 24. Hypnotics & Sedatives Hypnotics e.g.: Flurazepam Triazolam Sedatives e.g.: Phenobarbitone Lorazepam 25. Laxatives Bulk e.g.: Metamucil Mylanta Natural Fiber Fecal Softeners e.g.: Senokot Stimulant e.g.: Bisacodyl 26. Migraine Preparations Ergot Dervatives e.g.: Cafergot 27. Muscle Relaxants Skeletal Muscle Relaxants e.g.: Baclofen Smooth Muscle Relaxants e.g.: Flavoxate (Urispas) 28. Nasal Sprays e.g.: Cromolyn Nasal Spray Beclomethasone (Beconase) 29. Nausea Medications e.g.: Promethazine (Phenergan) Chlorpromazine (Thorazine) 30. Ophthalmic Preparations Anti-Infectives e.g.: Cortisporin \\Fdho.05\data1\06864000\CPMTRWORDPROC\JOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-51 of 59 Neosporn \\Fdho-05\datal\D6864000\CPMT\WORDPROC'JOBSPEC\GPS\REVOW¶EDICAL.DOC Page 111-52 of 59 Artificial Tears e.g.: Tears Naturale Free Beta Adrenergic Blocking Agents e.g.: Timolol Carbonic Anhydrase Inhibitors e.g.: Acetazolamide (Diamox) 31. Otic Preparations e.g.:Auralgan Otic Solution (Wyeth-Ayerst) Cerumenex Drops (Purdue Frederick) Cortisporin Otic Suspension (Burroughs Wellcome) 32. Psychotropics Antianxiety Agents e.g.: Alprazolam Chiordiazepoxide Diazepam Lorazepam 33. Respiratory Drugs Anti-Inflammatory Agents, Non-Steroidal e.g.: Intal Capsules Intal Inhaler Bronchial Dilators e.g.: Ipratopium (Atrovent) Metaproterenol (Alupent) 34. Seizure Disorders Barbiturates e.g.: Phenobarbitone Benzodiazepines e.g.: Clorazepate Diazepam Hydantoin Derivatives e.g.: Dilantin 35. Vitamins e.g.: Multivitamins \\Fdho-05\datal\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICAL.DOC Page 111-53 of 59 Multivitamins with Minerals \\Fdho05\dat1 \06864000\CPMT\WORDPROCUJOBSPEC\GPS\REV\'MEDICAL.DOC Page 111-54 of 59 . Mi... SE C X _W O RE E _ B. SUGGESTED EQUIPMENT LIST Alligator forceps Aluminum Backboard Basket stretcher Bed Pan Dental first aid kit Ear Syringe Ellis forceps Emergency cricothyroidotomy kit (disposable) Examination couch Examination lamp Eye Loop with Magnet Folding stretcher Four point lifting bridle Glucometer Iodine cup IV Module 1000ml IV Module 500ml Kelly forceps Kendrick Extrication Device (KED) Kendrick Traction Device (KTD) Kidney basin Kocher forceps Laryngoscope with assorted sizes curved and straight blades MaGill Forceps Magnifying glass with inbuilt light Malaria diagnostic set (as required) e.g. QBC or Para-sight F Medication Module Mini Portable Suction pump Monitor / Pacer I Defibrillator EKG with AC/DC capability Mosquito artery forceps MTP - Infusion Pump Nebulizer Needle holder Oto / Ophthalmoscope (Diagnostic set) Oxygen Supply with regulator Para-Sight F (Malaria) - as required Penlight \\Fdho-05\datal\06864000\CPMT\WORDPROC\OBSPEC\GPS\REVO\MEDICALDOC Page 111-55 of 59 ...... .~~~~~~~~~~.... .:.:. x~........... Penlight (blue light) with fluorescein Pharmacy Lock Box Pneumatic Anti-Shock Trousers (MAST) \\Fdho-05\datal\06864000\CPMT\WORDPROC\JOBSPECkGPS\REVO'MEDICALDOC Page 111-56 of 59 MEEflCAL SERVICE GUIDE LINES FO.... RE......... . ..... Portable Resuscitator LSPI75 system Pressure Infuser 1000mI Pulse oximeter Reflex Hammer Ring Cutter Scoop Stretcher Sphygmomanometer with varous cuff sizes Spinal board with straps Sterilizer (autoclave) Stethoscope Stomach pump and tube Surgical Scissors Thermometer - Ivac Urinal Visual Acuity Chart Weighing Scale C. SOFT GOODS LIST 1. Dressings 8" x 10" ABD Pads llpk 3" x 8" Adaptic 1/pk 1" x 3" Bandaid Cotton wool bag Coverlet "H" Bandaid Eye Pads (Sterile) 4' x 4" Sponges (Sterile) 2/pk 4" x 4" Sponges (Non-sterile) Steri-strip skin closures 3" x 8" Telfa Dressings 2. Bandages 2" Coban 3" Coban 4" Coban 2" Elastic Bandage 4" Elastic Bandage 6" Elastic Bandage \XFdho-05\data1IO6864OOO\cPMT\WORDPROcUOBSPEc\GPS\REVO\MEDICAL.DOC Page 111-57 of 59 ..... R Multitrauma dressing Non Sterle gauze pads Sterile gauze pads Sterile bum sheets 2" Stretch Gauze 4" Stretch Gauze 1" Transpore Tape 2" Transpore Tape Triangular Bandages Tube Gauze Size 1 2" Zonas Tape 3. Orthopedic 1/2" Alumafoam Splint Donway Traction Splint Extrication Collar - Small Extrication Collar - Medium Extrication Collar - Large Pneumosplints (half and full arm, half and full leg) Sam Splint (flexible splint) Umbrella Splint Vacuum mattress 4. Suture Disposable Suture Tray Disposable Suture Removal Tray Disposable Scalpel #11 Disposable Scalpel #15 Disposable Razor 3-0 Ethilon FS-2 4-0 Ethilon FS-2 6-0 Ethilon P-3 5-0 Prolene FS-2 Steri-Strips 1/8" Surgeon Gloves (Sterile) 4-0 Vycnll PC-1 5-0 Vycril PC-1 \\Fdho-O\datal \O68640OOOCPMT\WORDPROCUOBSPECGPS\REVO\MEDICAL.DOC Page III-SS of 59 5. Respiratorv Disposable BVM Resuscitator 6.0 Endotracheal Tube 7.5 Endotracheal Tube 8.5 Endotracheal Tube \\Fdho-05\data1\06864000\CPMT\WORDPROC\J0OSPEC\GPS\REVO\MEDICAL.DOC Page 111-59 of 59 #18 French Suction Catheter Nasal Cannula Nebulizer Face Mask Non-Rebreather Face Mask #3 Oropharyngeal Airway #4 Oropharyngeal Airway #5 Oropharyngeal Airway #6 Oropharyngeal Airway oxygen Supply Tubing Stylets Suction Tubing V-Vac Suction Yankauer Suction Tip 6. Intravenous .4ga x 1 114' Angiocath 16ga x i 114" Angiocath .8ga x 1 114" Angiocath 20ga x 1 114" Angiocath Butterfly Catheter 21 ga Drip stand Double Lumen Angiocath Hep Locks IV Solutions, e.g. normal saline, dextrose saline, dextrose solution, Hartmann's solution IV Tubing Set 15gtts/ml IV Tubing Set 60gtts/ml Tourniquets 7. Miscellaneous Alcohol Preps Cidex Cobalt Blue Light Cold Packs Cotton Tip Applicators (Sterile) 2/pk Defibrillator / Pacing Pads 2/pk Ear Speculum \\Fdho-05\data1\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVOIMEDICAL.DOC Page 111-60 of 59 EKG Electrodes 3/pk EKG Paper Emesis Basin Epistat Exam Gloves (Disposable) File for vial Foley Catheter Tray 16F Foley Catheter Tray 18F Glucoseldextrose for injection Glucostix for glucometer Hypodermic needle Insect repellant !vac Temperature Probes (Disposable) K-Y Jelly 6gm/tb Mini 911 ST Probe Covers (Disposable) Morgan Therapeutic Lens Multistix urine analysis i8ga x 1 1/2" Needle 22ga x 1 1/2" Needle 27ga x 1/2" Needle 1/4" Penrose Drain Pharmadine Solution Salem Sump, 18F Scrub Brushes / Sponge Plain Sharp-Trap Container Sharps Container Suction Canister Surgical Mask 3cc Syringe 5cc Syringe IOcc Syringe 60cc Syringe w/Luer Tip 60cc Syringe w/Cath Tip TB Syringe w/25ga Needles Tongue Blades 1/pk Tube Gauze Applicator Size 1 Tuning fork Water for injection (Standard alcohol and drug test collection kits will be provided by the Company) \\Fdho-05\datal\06864000\CPMRWORDPROCUOBSPEC GPS\REVOWEDICAL.DOC Page 111-61 of 59 8. Dental Backhaus Towel Clamp Cavit Cement Spatulas #2 Cotton Rolls Dental Pliers Duelon C D Extracting Forceps iris Scissors Mouth Props Adult #5 Plastic Mouth Mirror Sani-Cloth Large Topex Gel - bubblegum Veratex Explorer VTX McCall Scaler 9. Medical References 1. Merck Manual Published by Merck, Sharp & Dohme, Merck and Co. Inc. Rahway, NJ 2. First Responder Published by Robert J. Brady Co., Bowie, Maryland 20715, U.S.A. 3. Emergency in the Streets Published by Liffle, Brown and Company Boston Massachusetts 02106, U.S.A. 4. Atlas of Emergency Medicine Published by Williams & Wilkins 428 East Preston Street Baltimore, MD 21202, U.S.A. 5. Manson's Tropical Diseases Manson-Bahr, Bell 6. Essential Malario!ogy \\Fdho-05\datal\06864000\CPIVMT\WORDPROC\JOBSPEC\GPS\REVOWMEDICAL.DOC Page 111-62 of 59 Bruce-Chwatt 7. Short Text Book of Preventive Medicine for the Tropics Lucas and Gilles 8. A Colour Atlas of Tropical Medicine and Parsitotogy Peters and Gilles Books from 5 to 8 are published by Bailliere Tindall, 24 - 28 Oval Road, London NW1 7DX, England 9. Current Emergency Medical Diagnosis and Treatment 10. Current Medical Diagnosis and Treatment 11. Cunent Surgical Diagnosis and Treatment Books 9 to 11 are published by Appeiton & Lange, 25 Van Zant Street, East Norwalk, Connecticut 06855 12. Clinical Guidelines, Diagnostic and Treatment Manual 13. Minor Surgical Procedures in Remote Areas 14. Ophthalmology in Remote Areas Books 12 to 14 are published by Medecins sans Frontieres 8 rue Saint-Sabin 75011 Paris 15. Physicians' Desk Reference (Current Edition) P.O. Box 10689 Des Moines, Iowa 50336-0689 U.S.A. \\Fdho-05\dataI\06864OOO\CPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICALDOC Page 111-63 of 59 16. British National Fomulary (Current Edition) British Medical Association Tavistock Square London WCIH 9JP, England \\Fdho-05\data1X068640OO\CPMT\WORDPROCUOBSPEC\GPS\REVO\MEDICAL.O0C Page (Ul-64 of 59 APPENDIX Ill. EXAMPLES OF OCCUPATIONAL HEALTH CHECKLISTS A. FOOD SANITATION CHECKLIST QUALITY 1. Original container or otherwise safe source, no spoilage. 2. Safe source of meat and poultry supplies. 3. Delivery containers properly cleaned between use. PROTECTION 1. Potentially hazardous foods kept at correct temperatures during transport, storage, preparation and service. - Refrigeration kept at 70C (450F) or below. _H tot storage at 600C (140°F) or above. F_ rozen foods kept at-18°C (00F). Poultry and stuffed meats cooked at 740C (1650F) or above - all parts. - Other foods requiring cooking to be rapidly cooked to heat all parts to at least 600C (1400F). _ Food kept properly warmed/cooled if delayed in serving by more than 30 minutes. Potentially hazardous foods properly thawed in refrigerator or under water of 210C (700F) or less. 2. Accurate thermometers in use/visible. 3. Field foods properly selected and prepared. Avoid using meats that may spoil. Cheeseslnon-spoiling protein sources used. Milk/creamed dishes not sent. Transport in sanitized containers. \\FdhoO05\datal\06864000\CPMT\WORDPROCUOBSPEC\GPS\REVO'MEDICAL.DOC Page 111-65 of 59 Sanitize containers prior to each use. PERSONNEL 1. Hands washed and cleaned, good hygienic practices, clean clothes. 2. Personnel with infections restricted from food contact areasljobs. 3. Food preparation personnel careful when crossover from raw to cooked foods, maintain good hygienic practices. 4. Food not picked up by fingers durng preparation/serving unless absolutely necessary and plastic gloves used. 5. First aid facilities/materials available. FOOD EQUIPMENTIUTENSILS 1. Properly designed, able to be properly cleaned/sanitrzed. 2. Thoroughly cleaned after use and between use when handling raw foods to use for cooked foods (crossover use). Pre-flushed, scraped, soaked Washed, rinsed, sanitized at proper temperatures 3. Sanitizing of all food contact surfaces after cleaning by: Either immersion for at least 30 seconds in water heated to 770C (1700F) or In dish washing machine with a 10-15 second spray of water heated to 82°C (1800F) or By immersion in a chemically treated final rinse (several chemical sanitizers available). 4. Single-use utensils properly stored, not reused. 5. Accurate thermometers in use/visible. 6. Food cutting (butchery surfaces in good condition/cleaned). OTHER 1. Water sources safe. 2. Hot and cold water available. 3. Sewage and waste water properly disposed. 4. Garbage/refuse containers/receptacles: Kept covered between use. _ Insectirodent proof. Cleaned frequently. \\Fdho-05\datal 068640OO\CPMT\WORDPROCUOBSPECxGPSIREVO\MEDICAL.DOC Page 111-66 of 59 5. Toxic items properly stored, labeled, used. 6. Premises maintained free of lifter and other unnecessary articles. 7. Complete separation from living/sleeping quarters. B. WATER SAMPLE COLLECTION CHECKLIST 1. Use the proper sample container (e.g., bottle treated with sodium thiosulfate is needed if testing system has any chlorine residual for bacteria count). 2. Tum water on (if tap water) and let run for several minutes. 3. Open the sample container carefully to void hand/finger contact with lip of container or inside of lid. 4. Fill container all the way full with no air space on top. 5. Screw/clamp lid back on container and label container with date, time, location of water source and who collected sample. 6. Include any additional information regarding water sample as needed (e.g., suspicions of and type of contamination if any). 7. Promptly carrylsend sample to lab (for bacterial analysis; this may mean retuming the sample to the lab within 24 or 48 hours). C. DRINKING WATER CHECKLIST WATER QUALITY 1. Water source properly located. _ Minimum of 50 feet from sewer or septic tank. _ Minimum of 100 feet from pit privy. Minimum of 150 feet from all other fecal waste sources. 2. Water supply systems properly constructed. Trenches dug as needed to divert surface runoff from around well head. Water source screened/otherwise protected to avoid access by birds, animals or insects. 3. Water additionally treated as needed to assure safe use. Filtration conducted if cloudy, and Water disinfected with chlorine (or equivalent). 4. Altemate/emergency water supply maintained if necessary to assure water availability in dry/unpredictable weather situations. 5. Potable water tanks chlorinated to at least 5 ppm at the time of storage. 6. Potable water system, including all distribution lines, adequately treated (greater than or equal to 0.5 ppm chlorine residual) by a chlorination system. IXFdho-05\datal \06864000CPITVWORDPROCUOBSPEC\GPS\REVOMEDICALDOC Page 111-67 of 59 "'~~ ~~U1DELINES FOR~. ......MORTEIE 7. Acceptable evidence of potability. 8. Potable water distribution system, chlorine system properly maintained, operated and calibrated. 9. Potable water supply not subjected to contamination through cross connections to non-potable water supply through back-flow or back- siphonage. ~10. Only potable water supplied to the kitchen (also recommended for shower/eye wash stations) and other service areas. \\Fdho-O5\datal\06864000\CPvMTWORDPROC\JOBSPEC\GPS\REVO\MEDICAL.DOC Page II1-r68 of 59 D. WASTE WATER SANITATION CHECKLIST LOCATION 1. Will not contaminate water supplies or seafood sources. 2. Prevent contact with humans, pets, foodstuffs. 3. Prevent access by flies, mosquitoes, other insects, rodents or other animals. 4. Prevent pollution of bathing and recreational areas. 5. Excreta/non-excreta containing streams are separated. PRIVIES 1. Soil has good drainage properties. 2 feet of suitable soil between trenches/leaching pits and highest ground water or impermeable layer. 2. Ground water not contaminated. 3. At least 30- meters (100 feet) from surface water and kitchen. 4. At least 15 meters (50 feet) from sleeping quarters. 5. Provide toilet paper. 6. Add lime periodically to control odors. _7. System is insect/rodent proof. LEACHINGISEEPAGE PIT 1. Water sources uphill and 45-150 meters (150-500 feet) away. 2. Bottom of pit 4 feet above highest ground water level. 3. Wall construction of Field stones Cinder Stone concrete blocks - Special cesspool blocks 4. Bottom of pit filled with gravel. E. VECTOR CONTROL CHECKLIST PREVENTION OF VECTOR ACCESS 1. Food sources removed from vector access. \\Fdho-O5Xdata1\O6864OOO\CPMT\WORDPROc\JOBSPEC\GPS\REVO\MEDIcAL.DOc Page 111-69 of 59 Fruit and vegetables stored in refrigerator or vector-proof containers. Foods stored in tightly covered containers. 2. Refuse stored in closed containers and cleaned frequently. 3. Access to privies, toilets, etc. eliminated through the use of screen doors, air curtains, etc. 4. Access to laundry soaps and candles prevented. 5. Standing water eliminated. PESTICIDE APPLICATION _ i. Water and food supplies protected and not contaminated. 2. Appropriate pesticides used. _ 3. Pesticide applicators protected with approprate respirators, clothing and goggles. 4. Toxic items properly stored, labeled and used. PERSONAL PROTECTION 1. Appropriate spray-on or wipe-on repellent wom. 2. Long sleeved shirts and pants worn where appropriate (e.g., ticks, mosquitoes). 3. Periodic inspection of clothing and body (ticks). REDUCING SOURCES FOR MOSQUITOES 1. For smaller bodies of water, source reduced by one or more of the following: Use tide gates _ Drain wet areas, streams or ditches Grade the surface Clear brush Remove containers that can collect water _ 2. For larger bodies of water, source reduced by one or more of the following: Stock the water with fish Change the salinity Change the water level Agitate the water surface \\Fdho-05\datal\06864000\CPMT\WORDPROC'JOBSPEC\GPS\REVO\MEDICALDOC Page 111-70 of 59 APPENDIX IV. ALCOHOL & DRUG SPECIMEN COLLECTION PROCEDURES (FOR MEDICAL PERSONNEL OUTSIDE USA) The following "checklist" is provided as a guide in the collection process. 1 Identification/Informed Consent/Chain of Custody * Ask individual providing specimen for company identification to assure identity. * Have the next blank Chain of Custody form, with ID labels, available for use (Attachment 1). * Complete the Esso Informed Consent Fonn; 1-page version, (Attachment 2). Donor should be reminded to list all prescription and non-prescription medications used in the past 30 days. Accuracy and completeness of this list is very important! * Affix one of the small "I.D. labels" from the attached Chain of Custody Form onto this Informed Consent Form. * Open the plastic covered/sealed kit to be used for this collection in the presence of the individual to be tested. II Urine Collection for Drug Screening * Have individual remove all outer garments (overcoats and jackets), leave purses, briefcases, etc. in a secure location and wash hands prior to collection. * The collector should remain immediately outside lavatory while the individual voids in privacy. Consider use of added measures to ensure unaltered specimen (e.g., toilet water bluing agent, taping of water spigots or closed-off valves). \\Fdho-05\datai\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICALDOC Page 111-71 of 59 Collect urine specimen by asking the individual to fill the specimen bottle at least three quarters full with urine. There must be at least 60 ml of urine for the specimen to be tested by the laboratory. The individual should be asked to finish voiding completely after the specimen collection is completed. U\Fdho-05\Xcata1 \06864000\CPMT\WORDPROC;iOBSPEC\GPS\REVOWIEDICAL.DOC Page 111-72 of 59 ......I- ......... (lndividuals who cannot provide the 60 ml of urine should remain in the collection site and drnk eight ounces of fluid every 20 minutes until adequate unnation occurs.) * In the presence of the individual, the collector checks the temperature of the urne (e.g., viewing the temperature strip on the side of the specimen bottle). - The urine collected must be in the temperature range of 94 to 99 degrees Fahrenheit if read within a two-minute time span after urination. - If read within a four-minute time span, temperature range must be between 90.5 and 94 degrees Fahrenheit. * If the individual provides a "cold" specimen, attempt a second non-observed sample. If a second sample is not within the prescribed temperature range, the individual's body temperature should be checked. The urine specimen must be within a 6 degree range lower than the individual's body temperature. If not, ao observed collection may be necessary. * SEAL THE SPECIMEN, in full view of the individual, using the tamper-proof seal normally provided on the Chain of Custody Form. The seal must be placed over the lid or cap of the bottle, with the ends of the seal coming down the sides of the bottle. * Have the donor initial and date this specimen seal. * COMPLETE THE CHAIN OF CUSTODY FORM as follows: - Have the donor print his/her name in the space labeled "PATIENT' or 'DONOR NAME" and enter either the last four digits of their personal ID or Social Security Number or entire number in the space provided on the form. * Do NOT complete the list of medications section on the Chain of Custody Form. They SHOULD be listed on the Informed Consent Form which was completed in "I" above. * THE DONOR MUST SIGN AND DATE THE PATIENT AFFIDAVIT SECTION OF THE CHAIN OF CUSTODY FORM. \\Fdho-05Wata¶\O6864OO\cPMT\WORDPRocUOBSPEC\GPS\REvO\MEDICAL.DOc Page 111-73 of 59 * Place the sealed urine bottle in the small plastic specimen bag and enclose the absorbent packet in the bag with the specimen bottle. Also, remove adhesive strips from the top of bag and seal the bag. \\Fdho-05\data1\06864000\CPMT\WORDPROCUOBSPEC\GPS\REVO\1EDICAL.DOC Page 111-74 of 59 * Place specimen in the shipping box in which the specimen collection bottles were provided. * The COLLECTOR MUST COMPLETE AND SIGN AND DATE THE COLLECTION AGENT OR COLLECTOR AFFIDAVIT SECTION OF THE CHAIN OF CUSTODY FORM. (Omission of this signature and/or date will cause the laboratory to reject the specimen!) * Remove the pink laboratory copy of the completed Chain of Custody Form and place in the box with the specimen to go to the laboratory. A copy of the Chain of Custody Form may be kept by the Collector-, the "original" (white) one is sent to the Esso Medical Review Officer. * Do not seal the shipping box yet il-. Screening Test for Alcohol * Saliva Stick Method Ensure that individual to be tested has not ingested/used alcohol-containing liquid mouthwash or mouth spray, etc. just before test. If yes, wait 15 minutes before proceeding. - Remove the alcohol screening device from the test kit box and follow the instructions on the device's packet. - Assure that the device's quality assurance (QA) spot is not dark brown or blue before testing. If it is, discard and use the extra device provided. Upon testing, the QA spot must tum dark brown or blue. If it does not, then the test is not valid and should be repeated with another test device. - Reading the result: If the dark brown or blue color reaches or exceeds 0.04% or 40 mg/dl on the scale, then the screening test is POSITIVE, according to the Esso Alcohol and Drug Policy. - Record the result of the saliva alcohol test on the Informed Consent Form. + If this test is NEGATIVE (below 0.04%), a confirmatory test is not required. Skip to V in these instructions. \\Fdho-05\datal\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO\MEDICALDOC Page 111-75 of 59 + IF THIS SCREENING TEST IS POSITIVE (at/over 0.04%), the collection of a blood specimen for shipment to a lab for confirmatory testing is necessary. Proceed to IV for next steps. IV. Confirmatory Alcohol Testing * Blood Specimen - The blood specimen is to be taken in the tube provided, and should te obtained immediately after the saliva test indicates a positive. (Note: Please use the cleansing swab in the kit and not one that contains alcohol.) - On the blood tube, please print the following information on the white label: +CoIlector's initials. + Date and time of collection. + Social Security Number or another employee identification number alread.y used on the Chain of Custody Form. - SEAL THE SPECIMEN, and do it in full view of the donor by applying one of the small l.D. labels from the Chain of Custody Form across the stopper and down both sides of the tube. - Place the blood tube into the shipment box together with laboratory copy of the Chain of Custody Form and the urine specimen. V. Sealinq the Shipping Container * Be sure the "Laboratory" copy of the Chain of Custody Form has been enclosed with the specimen(s) in the pouch prior to sealing it, together with all related specimens. * Affix the Nichols Lab address label to the outside of the box: Coming Nichols Institute Substance Abuse Testing 7470 Mission Valley Road San Diego, CA 92108-4406 U.S.A. \\Fdho-05\datal\06864000\CPMT\WORDPROC\JOBSPEC\GPS\REVO'MEDICAL.DOC Page 111-76 of 59 * Seal the container using the "Box Custody Seal." Vi. Specimen Pickup and Shippinq * Notify a courier services in advance of a planned need for a pickup on the day of testing in order to assure a speedy pickup and delivery of the specimen. \\Fdho-05\data1%D6864oO\cPMT\woRDPRoc\JoBsPEc\GPsXREvo\MEDIcALDoc Page 111-77 of 59 * Package the specimens in any pre-provided courier envelopes or boxes. I It is suggested that a notation be made by the physician, in his/her copy of the patient's medical record, of the following: - Courier's waybill number. - If available, a specimen l.D-# label from the Chain of Custody Form. If not available, accurately copy the l.D.# in your record. VIl. Distribution of Forms * To: Medical Review Officer (via fastest method, e.g. courier service) Esso Company, Intemational Medicine and Environmental Health Dept. 200 Park Avenue Florham Park, New Jersey 07932 Telephone: (201) 7654647 Fax: (201) 765-4429 - Original Chain of Custody Formn (top sheet). If necessary, the local collecting doctor can make a copy for retention. - Esso Alcohol/Drug Informed Consent Form. * To: Collecting Physician's Files - Couriers waybill documents. - Optional: Copy of Chain of Custody Form. * To: Laboratory - Nichols "Laboratory" copy of Chain of Custody Form (does not contain name of donor) sealed within the mailing box, with specimen(s). \'Fdho-05\datal \068640OOXCPMTRWORDPROCUOBSPEC\GPSXREVOW7EDICAL.DOC Page 111-78 of 59 INFORMED CONSENT FORM/ALCOHOL SCREEN REPORT SPECIMEN ID NO. (OBTAIN FROM CHAIN OF CUSTODY FORM)| PURPOSE OF TEST (CHECK ALL THAT APPLY IN BOTH COLUMNS I & li) RANDOM (DESIGNATED POSITION) ESSO EMPLOYEE RANDOM (SPECIFIED EXECUTIVE) CONTRACTOR RANDOM FOR CAUSE PRE-ENTRY (DESIGNATED POSITION) COMPANY NAME PERIODIC PRE-EMPLOYMENTIPRE-PLACEMENT DATE POST-REHABILITATION 1, _________________________________(PLEASE PRINT YOUR NAME), CONSENT TO THIS REQUEST FOR BIOLOGIC SPECIMENS. I UNDERSTAND THAT THE CHEMICAL ANALYSIS OF THESE SPECIMENS WILL BE CONDUCTED BY A QUALIFIED LABORATORY AND THAT THE ANALYTIC RESULTS WILL BE EVALUATED BY AN ESSO PHYSICIAN. THE PURPOSE OF THIS ANALYSIS IS TO DETERMINE OR RULE OUT ALCOHOL OR DRUG ABUSE. I UNDERSTAND AND CONSENT TO THE MEDICAL DEPARTMENT REPORT TO APPROPRIATE MANAGEMENT THE RESULTS OF THE TESTS IN COMPLIANCE WITH THE ESSO ALCOHOL AND DRUG POLICY. I UNDERSTAND THE I IMPORTANCE OF ACCURATELY PROVIDING THE FOLLOWING LIST SO THAT TEST RESULTS MAY BE APPROPRIATELY INTERPRETED. I HAVE LISTED BELOW ALL MEDICATIONS, DRUG, OR VITAMINS TAKEN IN THE LAST 30 DAYS, I HAVE INCLUDED PRESCRIPTION AND NON-PRESCRIPTION MEDICATION HEADACHE REMEDIES, -COLD' PILLS, DIET PILLS, THROAT SPRAYS, ETC. (WHEREVER POSSIBLE, PRINT THE PRESCRIPTION DRUG NAME DIRECTLY FROM ITS LABEL. EMPLOYEE SIGNATURE COLLECTOR/MEDICAL REPRESENTATIVE SIGNATURE/rITLE EMPLOYEE IDENTIFICATION NUMBER LOCATION (CITY(COUNTRY) COMPANY NAME TELEPHONE NUMBER -COMPANY ADDRESS RESULT OF SCREENING TEST FOR ALCOHOL NEGATIVE POSITIVE (BLOOD SPECIMEN DRAWN FOR CONFIRMATION) POSITIVE (SECOND URINE SPECIMEN FOR CONFIRMATION OBTAINED 20 MINUTES AFTER COLLECTOR'S FIRST SPECIMEN OBTAINED AND BLADDER EMPTIED) INITIALS REFUSAL TO PROVIDE SPECIMEN IF EMPLOYEE REFUSES OR IS UNABLE TO SIGN THIS INFORMED CONSENT FORM OR TO SUBMIT TO PROVIDING THE REQUIRED SPECIMENS, A BRIEF DESCRIPTION THE REFUSAL/INABILITY AND THE REASONS WHY (IF KNOWN) SHOULD BE RECORDED ON THIS FORM, SIGNED BY THE COMPANY REPRESENTATIVE/COLLECTOR AND A WITNESS. BRIEF DESCRIPTION OF EMPLOYEE REFUSAUINABILITY TO SIGN OR SUBMIT REQUIRED SPECIMENS: CONtPANY REPRESENTAT6 COLLECTOR SRGATURE P DATE WITNESS SIGNATURE |DATE \\FdhoO05\data1\06864000RCPMTXWORDPROC\JOBSPEC\GPS\REVO\MEDICALDOC Page 111-79 of 59 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT GENERAL PROJECT SPECIFICATION FOR WASTE MANAGEMENT GPS-01 1 Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By O 19 Nov 96 10 CKO PRS DJS Issued for Proposals 1 I ; t < < {i 1 10 MEF DJS Issued for EMP R:Mobo5286sarosdm\ucerdirXgps-O1 1 .doc Specification No.: GPS-01 1 Page I of 10 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE MANAGEMENT TABLE OF CONTENTS 1.0 SCOPE .........................3 2.0 DOMESTIC WASTES ........................3 3.0 VEHICLEIEQUIPMENT MAINTENANCE WASTES .4 4.0 CONSTRUCTION DEBRIS ....................... . . . . 6 5.0 WATER WELL DRILLING AND COMPLETION WASTES ............................7 6.0 START-UP WASTES .8 7.0 OTHER WASTES .9 R:\henrS902\sarosdmXuserdir\gps-01 1.doc | Specification No.: GPS-01 I Page 2 of 10 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE MANAGEMENT 1.0 SCOPE Following are guidelines for waste management applicable during Contractor's performance of the Work. These guidelines provide minimum requirements and suggested waste management methods for each expected major waste type to be generated, and are to be used in preparation of contractor's Waste Management plans as required by Section 30 of the Coordination Procedure - Environmental Management. As indicated in the Coordination Procedure, ESSO will have facilities suitable for hazardous waste disposal in the oil field area in Chad and near the pump stations in Cameroon. Other ESSO approved facilities have yet to be identfied. Waste Management methods for each waste type will be reviewed and approved by ESSO as per Section 30 of the Coordination Procedure Environmental Management 2.0 DOMESTIC WASTES 2.1 Waste Water Depending on the size of the camp and its duration, different types of waste water treatment systems may be applicable. Suitable options may include: 1) an RBC (rotating biological contactor) package plant with effluent discharge to surface waters or a subsurface soil absorption system, or 2) septic tanks with subsurface soil absorption systems. Raw sewage and other waste water will not be discharged into soil or surface water without one of the above treatments (reference GPS-003 (Packaged Sewage Treatment System) and GPS-18 (Sepfic Tank and Effluent Disposal into Drainage Field (Temporary))) or an ESSO approved altemative. Discharge will be to perennial surface waters, to a subsurface absorption system, or to a surface (e.g., sprinkler) absorption/evaporation system and will be performed in a manner that avoids erosion. 2.2 Water Treatment Sludge Suitable options for disposal of waste water treatment sludge include: 1) land spreading of the solids with incorporation into the surface soil, or 2) sludge drying beds with landfill disposal or land spreading of dry solids. R:LoBO5285\SAROSDMuserdiegps-O11.doc E Specfication No.: GPS-011 Page 3 of 10 Rev. I 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE MANAGEMENT Waste solids should be spread over areas that will need to be revegetated upon camp abandonment rather than clearing additional areas for disposal, when possible. 2.3 Refuse This category of wastes consists of items from the kitchen, bathroom, laundry, warehouse, etc. Many of these items may be biodegradable, others will be inert. The volume of wastes to be disposed may be minimized by recycling and/or incineration. Refuse from the camps and work areas will be placed in closed containers and disposed of daily. The disposal method shall prevent attraction of predators and scavengers (i.e., incineration of refuse and landfilling of resulting ash). Reference specifications for incinerators and landfills in this Job Specification. 2.4 Medical Wastes All medical wastes shall be incinerated by Contractor at its Work Site oF transported to an incinerator designated by ESSO. Needles and other sharp objects will be contained in 'sharps' disposal containers, and all wastes will be stored and transported in bio-hazard bags prior to incineration. Ash shall be sent to an ESSO approved hazardous waste facility. 3.0 VEHICLE/EQUIPMENT MAINTENANCE WASTES 3.1 Batteries The preferred management method for batteries is to recycle them. If the vendor will not take the batteries back and no other recycling facilities are available, then the batteries should be stabilized and stored until they can be transported to an ESSO approved facility. Storage facilities shall be designed to provide safe and secure storage, and to prevent site contamination. R:\LOBOS28S\SAROSDVAuserdirgPS-01 I .doc I Specification No.: GPS-011 I Page 4 of 10 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE MANAGEMENT 3.2 Tires Various opportunities exist to recycle tires. Alternatively, tires may be buried or landfilled. Tires occupy a large volume, so opportunities to minimize the volume disposed should be explored (e.g., buming in cement kilns, using ground tires in asphalt paving materials). If buried, measures should be taken to prevent tires from floating to the surface over time. 3.3 Oily Wastes This category of wastes consists of used lubricants, motor oil, transmission oils, drive grease, cleaning solvents, and any other oily liquids and greases that will be generated while maintaining vehicles and equipment Used hydrocarbons generated at the pipeline pump stations may be stored, in suitable tanks, for injection into the pipeline when it becomes operational. Another suitable option for oily wastes is incineration or use as supplementary fuel in cement kilns or incinerators. Waste oils shall not be drained onto the ground. Other oily wastes that will be generated include oily filters and rags. Disposable filters should be drained into a suitable waste oil container before disposal. Suitable options for disposal may include: 1) incineration, or 2) landfill at an ESSO approved facility (at the oil field facilities in Chad or at the pump station locations in Cameroon). Recyclable filters should be used when possible. 3.4 Scrap Scrap parts will be generated from maintenance activities. The composition of these parts will determine the most suitable disposal option. Metal parts may be recycled or buried (if small), plastic parts may be incinerated and/or landfilled. R.\LOBO5285\SAROSDtMwserdir\gps011 .doc Specification No.: GPS-0i1 T Page5OfO10 Rev. 1 129 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE MANAGEMENT 4.0 CONSTRUCTION DEBRIS 4.1 Vegetation Debris Suitable options for the disposal of non-commercially valuable vegetation debris include: 1) making the material available to the local population for building materials and fuel, 2) small trees and brush may be chipped and used as a soil amendment or bulking agent for land treatment or composting, or spread over areas to be reclaimed. Buming of vegetation shall be minimized. 4.2 Cement and Concrete Waste This category of waste includes cement contaminated soils as well as other cement and concrete wastes generated during construction. Waste volumes can be minimized by retuming un-reacted cement to the vendor, or using it at the next Work Site. Set materials may be crushed and used as fill or road base material, or buried. Cement contaminated soils may also be suitable for landfill cover. 4.3 Wood Suitable options for wood debris will be similar to those for vegetation debris. 4.4 Metal Scrap metal shall be sold to a scrap yard for recycling, if possible. If recycling/reuse is not possible then landfill/burial may be used. If the metal is a container that has been in contact with organic liquids or toxic chemicals (e.g., biocides, herbicides, pesticides, etc.) then it shall be crushed, so that it cannot be used for storage of goods by local people, and sold as scrap or landfilled. Large pieces of metal (e.g., wrecked vehicles, engine blocks) will not be buried. 4.5 Oil Contaminated Soil Preferred options for treatment and disposal of oil contaminated soils include: 1) treatment in place via bioremediation, 2) excavation for treatment via composting, 3) incineration, and 4) use as supplementary R:-LOBO528SSAROSDM\userdir\gpsO11 .doc | Specifcatbon No.: GPS-01 1 Page 6 of 10 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE MANAGEMENT fuel in a cement kiln or incinerator (if oil content is >25%). The target for treatment of oil contaminated soil is less than I weight percent oil and grease remaining. 4.6 Paint (and Other Coating) Wastes Suitable options for disposal of solvent based paint/coatings are incineration or use as a supplementary fuel (e.g., in cement kilns or incinerators). Contaminated rags, brushes, and other related wastes may be suitable for landfill if contamination is low. Empty cans shall be crushed prior to disposal. Paint/coatings shall not be drained onto the ground or buried. 5.0 WATER WELL DRILLING AND COMPLETION WASTES 5.1 Drill Solids, Cuttings (Fresh Water) Drill solids from water based drilling systems should be relatively free of oil. Water based cuttings may be land applied or dilution buried., Altematively, the solids can be dried and used as landfill cover. 5.2 Cement Contaminated Mud If contamination is low, treatment with bicarbonate may allow reuse. Altematively, mud may be used in a mud-to-cement program. Other acceptable opfions may include land application or dilution burial, or solidification of the mud solids for use as landfill cover. 5.3 Cement and Concrete Waste This category of waste includes cement contaminated soils as well as other cement and concrete wastes generated during construction. Waste volumes can be minimized by returning un-reacted cement to the vendor, or using it at the next Work Site. Set materials may be crushed and used as fill or road base material, or buried. Cement contaminated soils may also be suitable for landfill cover. R:L LOB05285tSAROsDMKuserdirgps-01.doc Specification No.: GPS-01 1 Page 7 of0 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE MANAGEMENT 5.4 Whole Mud (Fresh Water Gel Mud) As long as the toxicity is low, acceptable options for fresh water gel muds include land application or dilution burial, or solidification of the mud solids for use as landfill cover. 5.5 Workover and Completion Fluids Appropriate options for disposal of workover and completion fluids will depend upon the characterisfics of the fluids and whether surface waters having sufficient flow to dilute constituents and exhibit no impact are available. Options include treatment for surface discharge and treatment for injection into an appropriate reservoir. 6.0 START-UP WASTES 6.1 Oil Contaminated Soil Preferred options for treatment and disposal of oil contaminated soils include: 1) treatment in place via bioremediation, 2) excavation for- treatment via composting, 3) incineration, and 4) use as supplementary fuel in a cement kiln or incinerator (if oil content is >25%). The target for treatment of oil contaminated soil is less than 1 weight percent oil and grease remaining. 6.2 Fuel Oil Filter Sludge Preferred options for the management of fuel oil filter sludge are composting or land treatment, or incineration. 6.3 Lube Oil Filter Sludge Preferred options for the management of lube oil filter sludge are composting or land treatment, or incineration. 6.4 Sludges, Slop Oil and Tank Bottoms The volume of material to be managed can be reduced by reclaiming the oils and recycling them into the crude stream. Remaining oily solids may be composted to reduce oil content, or may be incinerated. R:\LOB0528S\SAROSDlAuserdir\gps-01 1.doc Specification No.: GPS-01OI Page 8 of 10 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE MANAGEMENT 6.5 Used Lube Oil Waste Used lube oil may be stored in crude production wells or tankage until crude is produced, then recycled into the crude stream for processing. Oily solids may be incinerated. Lube oil may also be incinerated or used as supplementary fuel (e.g., in a cement kiln or incinerator). Waste oils shall not be drained onto the ground. 7.0 OTHER WASTES 7.1 Used Solvents Waste volumes shall be minimized by retuming solvents and their containers to the supplier, or using them on the next Work Site where possible. Solvents may also be reclaimed for reuse. Waste solvents may be suitable for incineration or use as supplementary fuel in a cement kiln or incinerator. Solvents shall not be drained onto the ground or buried. 7.2 DrumslBarrelslContainers Suitable options for disposal of drums, barrels and containers include: 1) retuming them to respective vendors for recycling, 2) burial or landfill Drums, barrels and containers shall not be made available for use by the local population unless removable liners prevented chemical contents from contacting the container walls. If the drums, barrels or containers have been in contact with organic liquids, or toxic chemicals (e.g., biocides, herbicides, pesticides, etc.) then they shall be emptied, crushed and landfilled. 7.3 Incinerator Ash Ash from incineration of various wastes shall be landfilled. If the original waste had a high metals content, then the ash shall be stabilized to prevent leaching of metals prior to being landfilled. RA\LO805285\SAROSDM\userdirXgps-011 .doc Specification No.: GPS-01 1 Page 9 of 10 Rev. 1 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR WASTE MANAGEMENT 7.4 Water/Sludge from Container Washing Sludges and contaminated wash waters generated during drum/barrel/container washing operations shall be processed to recover any free oil and separate solids from liquids. Recovered hydrocarbons can be mixed with other used oil wastes. Oily solids may be suitable for composting or land treatment, or may be incinerated. Waste waters containing biodegradable organics may be added to the domestic waste water stream for treatment if volumes are small. Appropriate management will depend upon the substance washed and the resulting concentration in the wash water. 7.5 Hydrotest Fluid Hydrotest fluid volumes can be minimized by optimizing uselreuse of the fluid as sequential segments of the pipeline are hydrotested. Surface discharge of the hydrotest fluids may be acceptable if the constituents are diluted sufficiently (water treatment may be necessary) to cause no detrimental impact on either surface water resources or ground water that receives the leachate from water discharge over soil. Surface discharge shall be done in a manner that prevents erosion and minimizes impacts on vegetation. R;.LOBO528SAROSDUNuserdirdps-.OiIdoc Specification No.: GPS-01 PageI0 of 10 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN GPS-012 Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By 0 19 Nov 96 27 CKO ADM DJS Issued for Proposals 1 3tc C4 11 27 MEF DJS Issued for EMP R:Uobo52851sarosdmluserdirtgpsO12.doc Specificaton No.: GPS-012 Page 1 of 27 Rev. 1 i 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN TABLE OF CONTENTS 1.0 PUBLIC AWARENESS .......................... 3 1.1 POLICY ................................. 3 1.2 OBJECTIVE .......................... 3 1.3 SCOPE .......................... 3 1.4 IDENTIFYING ISSUES ................................................................................................ 4 1.5 LOCAL/NATIONAL PARTICIPATION ........................ 4 1.6 SOCIOECONOMIC BASELINE STUDY ..............................5........................ ....... . 5 1.7 Esso's REGIONAL AWARENESS PROGRAM .............................. 5 1.8 CONTRACTOR'S REGIONAL PUBLIC AWARENESS RESPONSIBILITIES ............ .............. 5 2.0 EMPLOYMENT ................................................... 6 2.1 POLICY ................................................... 6 2.2 OBJECTIVES .................................................... 7 2.3 ISSUES/CONSTRAINTS ............................ 7 2.4 ASSIGNMENT OF RESPONSIBILITIES. 8 2.5 INFORMATIONICOMMUNICATION. 9 2.6 RECRUITMENT PROCESS .11 2.7 TRAINING .14 2.8 TRANSPORTATION AND HOUSING .17 2.9 PERSONNEL ADMINISTRATION .18 3.0 BUSINESS OPPORTUNITIES.....................................................................1 8 3.1 GENERAL OBLIGATIONS .18 3.2 BASIS FOR PLAN ................................ . . . . . . . . 19 3.3 OBJECTIVES .19 3.4 ANALYSIS OF POTENTIAL OPPORTUNITIES .19 3.5 EssO AND CONTRACTOR RESPONSIBILITIES .20 3.6 CONTRACTOR RESPONSIBILITIES. ............... . 21 3.7 Esso RESPONSIBILITIES ....................................................................................... 22 4.0 LAND USE ..............................26......................-.-.. 26 4.1 LAND USE IMPACTS ................................................................... 26 4.2 LAND ACQUISITION ................................................................................................ 26 LIST OF TABLES AND FIGURES Table I OPPORTUNITIES FOR LOCAL BUSINESS .23 R.\LO805285\SAROSDMNuserdir%gps-012.doc Specification No.: GPS-012 Page2of 27 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN 1.0 PUBLIC AWARENESS 1.1 Policy Esso is committed to providing appropriate, timely and accurate information and will arrange for LocalNational consultation conceming the Chad Development and Export System Project forA,vift individuals, groups, communities, govemment agencies and other organizations. Esso will conduct direct consultation with local interest groups as the basis for identifying concems about the project and responding to them in planning, constructing and operating its Chadian and Cameroonian facilities.- Major Contractors and their sub-contractors shall contractually acknowledge Esso's strong commitment to project socioeconomic goals. Contractors' working contracts must include provision for preparing Public Awareness Procedures consistent with project goals and Esso guidermnes. 1.2 Objective The intent of the Public Awareness section of this Socioeconomic Action Plan is to explain how Esso and its major Contractors: * identify and respond to project issues that are of concem to Chadian and Cameroonian residents, communities, groups, govemment agencies and other organizations; * allow for Local/national participation in addressing issues related to project planning, construction and operations; and * monitor the project's and Contractors' socioeconomic results. 1.3 Scope The Public Awareness section of the Socioeconomic Action Plan is based upon a consultation process in both countries that is designed to: * identify issues; * achieve local and national awareness of project goals and needs; • build company relationships; and * encourage LocaVNational partcipation. RA\LOB05285\SAROSDM\userdi?gps-012.doc NSpcahonNo.: GPS-012 Paqe 3 of 27 Rev. 1Ir 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN 1.4 Identifying Issues The principal method Esso will use to identify issues will be through continued contact with groups and individuals in the communities impacted by the project and with govemment officials. Through these discussions, information about the projects status will be passed on and issues will be identified. This process will include: visits to Chadian/Cameroonian communities to establish contacts, discuss plans, and identify and resolve any concems that residents and communities may have about the project; * meetings with Chadian/Cameroonian businesses to determine which services and goods are available and to discuss business opportunities and identify related problems; and * meetings with various government agencies to identify and resolve govemment concems and establish good working relationships. Esso is willing to meet with legibmate interested groups and individuals, on both a regular and unscheduled basis, to discuss issues of concem arising' from the project Esso also relies on the results of socioeconomic studies conducted in the local area to identify issues and concems. Esso will respond in writing to all written formal concems received. 1.5 Local/National Participafion Esso is committed to constructing and operating the Chad Development and Export System in a way that provides Local/National labor and business with significant opportunities for participation. Contractors shall be free to choose suppliers, Contractors and subcontractors in order to obtain services of good quality, in connection with every aspect of the Work irrespective of national origin. However, Contractor and its subcontractors shall endeavor to use Chadian/Cameroonian personnel, equipment, and insurers incorporated in Chad/Cameroon, provided that their services and equipment meet the criteria of efficiency, technical capabilities, and financial considerations while remaining comparable to the equipment, material, insurance and services of R:XL0805285\SAROSDMv\userdir\gps.012.doc Specification No.: GPS-012 Pae 4 of 27 Rev. 1 _I29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLA foreign origin with regard to pnce, quality, reliability, availability, and delivery terms. 1.6 Socioeconomic Baseline Study As part of the Environmental Assessment (EA) process, Esso has completed a Socioeconomic Baseline Study to measure the impact of the Chad Development and Export System Project Esso has reviewed the program with govemment officials of both govemments. The EA baseline data has been collected and collated, and submitted to the governments of Chad and Cameroon. The Chadian and Cameroonian govemments, in associaton with the World Bank, will release the EA for public review and comment 1.7 Esso's Regional Awareness Program Esso will continue to stive for regional awareness of all aspects of the project through a public information program. This program includes: publishing brochures for Chadian/Cameroonian distibution that - describe and explain the planned project, - detail job opportunities for Chadian and Cameroonian residents, and - explain potential opportunities for LocalNational business. developing audio visual programs describing the project * ongoing consultation with communites, businesses, government and other groups. * supplying copies of this Socioeconomic Action Plan, and other public documents, when requested to do so. 1.8 Contractor's Regional Public Awareness Responsibilities Contractor public awareness responsibilities will include, but not be limited to, the following: R:\LOB0528\SAROSDM\userdi?\gps-012.doc | Specificaton No.: GPS-012 Page 5 of 27 Rev.1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN * assisting Esso with general consultation and public awareness program. . preparing public awareness materials and presentations that clearly define local business opportunities and labor needs. * assisting Esso with the presentation and consultation effort necessary to ensure broad distrbution of contract specific materials. * employing an Employment and Business Coordinator(s) to work with Esso's Employment and Business Coordinator(s). - * being aware of and sensitive to the potential for changes in public atfitudes and perceptions that might require additional public awareness action(s). Contractor should develop an internal network that will collect information and provide warning about changing public perceptions. This information should be relayed to Esso through the Employment and Business Coordinator(s). • working with Esso to develop additional public awareness materials and presentations that address changes in public perception of the project. 2.0 EMPLOYMENT 2.1 Policy It is the Policy of Esso to provide full and fair employment opportunity in conformance with all applicable laws and regulations of the Republics of Chad and Cameroon, to Nationals who are qualified to perform job requirements. Esso's policies and procedures will be binding on its Contractors and on their sub-contractors. Companies already licensed to do business in Chad and/or Cameroon will adjust their plans to accommodate their existing work force in the framework of Esso's policies and procedures. Contractor(s) will prepare a detailed employment plan for Esso review and approval before mobilization. R:\LOBO5285\SAROSDM\userdir\gps-012.doc | Speciftcation No.: GPS-012 Pae 6 of 27 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN It is Esso's desire, consistent with other reasonable factors such as, cost, availability, and qualifications that Contractors ensure that Chadian/Cameroonian citizens have access to all employment opportunities for which they qualify. It is incumbent on Contractors to develop a training program that can be reasonably demonstrated to assist in the execution of a cost effective construction project while maximizing local labor involvement, after developing cost data comparing the expense associated with importing expatriate workers to training a LocaVNational work force. 2.2 Objectives Esso employment objectives include: - ensuring that Chadian/Cameroonian citizens have access to all employment opportunities for which they qualify. * - ensuring equitable distribution of employment opportunities giving a priority to communifies that are most affected (by the Work) at the Canton and village levels. - sourcing long term operating staff from the construction work force. * minimizing impact of work force housing on surrounding communities. 2.3 IssueslConstraints This plan is designed to overcome limiting factors to attracting qualified Nationals as construction employees of the project's contractors or of Esso. These limiting factors and the mitigation responses to address those limitations are discussed below: Issues/Constraints Mitigation * Inconsistent or non-existent * Develop training guidelines for Contractor employment training to execute per Section 27 of the Coordination Procedure - Training. R:\LO085285\SAROSDM\userdifSgps-012.doc r Specification No.: GPS-012 l Page 7 of 27 Rev. i 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN * No employment infrastructure * Define hiring policy and process and Esso versus Contractor roles. * Establish Esso and Contractor's Employment and Business Coordinator(s) in Chad and Cameroon to facilitate the recruitment process. * Differing cultures and lifestyles * Based on survey identifying cultural/ lifestyle issues prepare cross-cultural training requirements for expatriate group as well as National group. * Unrealistic expectations of local * Communicate with govemment and people in terms of job availability community leaders, local population, to and duration diffuse issue. The following sections discuss specific plans to meet the objectives, taking into account the constraints Esso has identified. 2.4 Assignment of Responsibilities 2.4.1 Esso Responsibilities through the Employment and Consultation Office Esso will establish an Employment and Consultation Office (ECO) in N'Diamena - Chad and in Douala - Cameroon. In both places the office will be staffed with an Esso Employment and Business Coordinator(s). The ECO will be responsible for. a Providing individuals, groups and the govemment with information about the number and types of jobs available and when people will be needed to fill them. This information will be based on Esso's own needs as well as Contractors' needs as outlined in their employment plan. This information program is described in a following section. . Implementing the pre-selection process for the national recruitment of Esso and Contractor employees. The deliverable of this process will be a list of potential candidates for the different Contractors' job positions. Final selection from this list will remain with Contractor. R:\LOBO5285\SAROSOM\±serdir\gps-O12.doc Specification No.: GPS012 Page8of 27 Rev. 1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN e Ensuring that Contractors' plans and programs are in place for hiring and training Nationals - including program monitoring. a Consolidating the personnel tracking database of the different Contractors and sub-contractors as detailed in a subsequent section, in order to provide information for sourcing long term Esso operating staff from the construction work force. 2.4.2 Contractor Employment Responsibilities Contractor(s) will develop an employment plan consistent with Esso's employment policies as discussed in this document. Contractor's plan will include: * identifying positions to be filled by Nationals, • defining the hiring mechanism which will interface with Esso's screening process, * developing a training program and outlining provisions for care and administration of staff and labor. • designating an Employment and Business Coordinator(s) to interface with Esso's Employment and Business Coordinator(s). * developing a personnel tracking system that will catalog and retrieve employee information to include all project work history from hiring through termination. The system shall include, as a minimum, pre-employment screening, personnel evaluations, training programs completed, salary history and final termination papers. 2.5 Information/Communication 2.5.1 Job Opportunity Presentations Based on Esso's own work force requirements and Contractor's employment plan, reviewed and accepted by Esso prior to R:\LOB05286\SAROSDM\userdi?\gps-012.doc | Specification No.: GPS-012 Page 9 of 27 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN mobilization, Esso's Employment and Business Coordinator(s) with the assistance of Contractors' Employment and Business Coordinator(s) will meet with individuals and groups in their communities to provide audio visual presentations explaining the main features of the project and the requirements of construction, operations and maintenance positions. Job opportunity briefings will include: * job duties and responsibilities, * labor schedule showing when the jobs will be required, * number of people required for each position, * qualifications required for each job, and * appropriate training for the different positions. During the course of these presentations, the representatives of Esso and Contractor(s) should be ready to explain what potential workers can expect from project employment in terms of pay, compensation and working conditions. During the presentations, Esso's and Contractors' representatives will clearly indicate: * the finite number of construction jobs, * the duration of the construction project, and * the smaller but longer term number of operations and maintenance positions. This should help diffuse any unrealistic expectations regarding employment. 2,5.2 Promotional Programs To reinforce its information program and employment plan and encourage qualified Nationals to take advantage of job opportunities, Esso's Business and Employment Coordinator(s) will use local and national media to: * Recruit locally for unskilled positions. Esso, in cooperation with local authorities, would arrange local employment meetings and arrange for advertising in local newspapers, local radio stations and on bulletin boards. * Advertise nationally employment opportunities for the higher skilled positions on radios and newspapers. R:\LOB05285\SAROSDM\userdir\gps-012.doc Specification No.: GPS-O12 PageIOof 27 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN 2.5.3 Presentation Cycle The information program will be implemented on-site between contract award and site mobilization. Sequentially, there will be Prefecture meeting, Sous Prefecture meetings, Chef-lieu de Canton meetings, and one to two village meetings per Canton for the administrative areas impacted by the project. An impacted administrative area is a region, a Canton or a village/commune which will host production facilities, the pipeline right-of-way, pipeline pump stations, storage yards, camps or other project related Work Sites. 2.6 Recruitment Process 2.6.1 Local Work Force A Local is defined as a permanent resident of the project area (less than a one hour commute to the Work Site). Locals will be made aware of the job opportunities in the presentations made in. the "Chefs lieux de Canton" and village meetings of the impacted areas. Following up on those meetings, Esso's Employment and Business Coordinator(s) will ask 'Chefs de Canton" and the local clergy to work together to provide a list of potential candidates from their Canton, broken down by villages. Candidates should be in good physical condition, and live in those villages. Each list will include: * name of candidates, * age and residence, * mother language, preferably French speaking, and * any skill that could be helpful in the project: technical skills, previous work experience. R:\LOBO528S\SAROSDMNuserdir\gps-012.doc Specification No.: GPS-012 Page eI of 27 Rev. 1 |29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN It is expected that unskilled positions will be filled by local workers (as defined above) and that Esso will identify some candidates for more skilled positions in the local population. The description of the next steps are mainly addressing the laborers' screening prior to hiring. Based on the work force demand of Esso and its Contractors for fixed Work sites (Field Facilities, main camps of Pipeline, Pump Stations, Logistics yards), the Esso Employment and Business Coordinator(s) will equitably allocate unskilled positions between the impacted Cantons (e.g., Field Facilities construction will straddle five Cantons: MIANDOUM, DOBA, BERO, KOME, BEBEDJA). Allocations within each Canton will be decided after consultation with local authorities (i.e., Prefets, Sous Prefets, and Chefs de Canton). For mobile work sites like the pipeline and infrastructure spreads, equitable distribution of employment opportunities between the impacted Cantons will apply to the cross-section of employees for a full work season regardless of whether Contractor hires all the, employees at once for the season or hires them for short work contracts as the work progresses. The two alternatives are possible and Contractor should propose the most efficient one without compromising Esso's socioeconomic objectives. From the list of potential candidates and hiring guidelines provided by Esso's Employment and Business Coordinator(s), Contractor(s) will select its personnel. Contractor will propose a selection/hiring process which will: * Verify information included in the Cantons lists when candidates are interviewed. Candidates will provide proof of identification (ID card) and police clearance. • Include a medical examination performed by a doctor or a paramedic per Coordination Procedure 23 - Occupational Health, Medical Facilities and Sanitation. * Define the skill evaluation phase. The test, evaluation, classification will be performed by personnel familiar with the local cultures. R-\LOB0528SAROSDM\userdir\gps.012.do- I Specification No.: GPS-01 2 Page12of 27 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN Define the final monitoring process to comply with the allocation required by Esso. The screening decision will be documented for each candidate whether the candidate is selected or discarded. Esso's Employment and Business Coordinator(s) will meet as often as necessary with Contractors Employment and Business Coordinator(s) to steward the process and address issues that will arise in the course of the hiring process. When higher skill candidates are identified from the lists provided by the Cantons' chief, their screening and selection will be that of the non-local workers described below. 2.6.2 Regional and National Work Force A local resident has been defined in Section 2.6.1, "Local Work Force." Regional individuals are residents of the administrative "Departments" where the given facilities are sited (e.g., "Ocean Department" in Cameroon with Kribi as the Prefecture). It is expected that the majority of the semi-skilled positions and some skcilled positions will be filled by Nationals. Esso will develop and implement a program that advises on the quantity and duration. of project employment opportunities through National media advertising and local information meetings. Contractors' Employment and Business Coordinator(s) will be in contact with potential candidates. Each candidate will be asked to complete and submit an application which will include personal information (including proof of ID), academic background, skill training and work experience. The role of Esso's Business and Employment Coordinator(s) will be to: * Develop and steward the media program. * Ensure wide distribution of employment information in critical public places. RA\LO9O5285\SAROSDMk5serdirgps.O12.doc | Specification No.: GPS-012 Page 13 of 27 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN * Provide counseling on how to apply for employment. * Review Contractor's list of potential employment candidates. Contractor's Employment and Business Coordinator(s) shall: * Screen and eliminate unqualified candidates. * Prepare and propose lists of potential candidates by positions. This will take into account Contractor's training program which should upgrade the skills of some -of the Local/National laborers. Contractor will select its personnel from the pre-selection lists, which should be ready at the start of site mobilization. Contractor vvill provide in its Employment Plan a selection process in conformance with guidance provided in Section 2.6.1, "Local Work Force." However, for higher skilled positions for which a nationwide recruitment plan will be necessary, the first preference will be given to qualified local residents who apply for jobs, therr qualified regional workers, before considering other National candidates. The screening decision will be documented for each candidate and Esso's Employment and Business Coordinator(s) will work with Contractors' Business and Employment Coordinator(s) to address issues arising in the course of this selection. 2.7 Training 2.7.1 Scope It shall be the responsibility of Contractor to develop and administer a Training Program to meet project training requirements. This program will be designed to accomplish multiple objectives and will be executed in two phases. Phase 1 training will be designed to orient the work force at mobilization and will accomplish several tasks. First, the training program will develop basic skills in topics such as health and safety for the newly hired National work force. Second, the training program will provide basic crafts skills training for the R:\L0505285\SAROSIDMuserdir\gps-012.doc Specification No.: GPS,12 Page 14 of 27 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN unskilled work force. Finally, the training program will provide cross cultural awareness training for all workers, Nationals and expatriates. Contractor shall provide counseling to assist National workers in adjusting to industrial work conditions. In the interest of providing local labor for long term operations needs, Phase 2 training will be designed to advance worker skills from the basic level to the semiskilled or skilled level. Guidance for preparing Phase 2 plans is included in Coordination Procedures Section 27 - Training. 2.7.2 Contractor's Employment Orientation Plan Esso's Contractor(s) shall be responsible for training its work force. Minimum standards set by Esso, and discussed below shall be followed by all major project Contractors. Contractor shall submit to Esso for review within ninety (90) days of Contract award a Training Plan which includes: o Documentation of Contractor's compliance with hirng guidelines provided by Esso to ensure equitable distributior of project employment across tribaVcultural and civil boundaries. * A comprehensive description of all planned training activities covering the following topics: environmental, health, safety, security, community awareness and fire protection. Descriptions shall include course content, course attendees and testing and verification methods. * A description of the TRAINING tracking program and the records system which documents all employee orientation and construction training. As part of the orientafion process Contractor shall supply each new employee to be working in construction areas with a full set of work clothes including one (1) pair of safety shoes, (1) hard hat, (1) pair safety glasses and (1) pair of ear protection devices, three (3) pair of socks, two (2) trousers, and three (3) shirts. The clothing shall be supplied annually by Contractor and shall require the approval of Esso. R:\LOBOS285\SAROSDM\userdir\gps-012.doc Specification No.: GPS-012 PageISof 27 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN 2.7.3 Contractor's Skills Training Plan Consistent with Esso objectives of maximizing the use and training of Local/National employees without sacrificing cost effectiveness or quality of workmanship, Contractor shall develop a skills training plan that allows participation of the largest segment of the Chadian and the Cameroonian work force possible. Contractors plan should address, at a minimum, the following issues: • Contractor shall conduct a survey of labor availability within the regional area of their work responsibility prior to startup to determine the availability of skilled, semi-skilled and unskilled labor (appropriate for those positions germane to its Scope of Work) and make available to Esso the results/conclusions of this survey. * Contractor shall develop a craft work force profile for each regional area of their work responsibility. This information is to be used in the hiring process and the development of the Training Plan. - Contractor shall implement an Esso approved Training Program for skilled and semi-skilled National/Local hire craft training and certification which includes helpers, craftsman and foreman. * Contractor shall pay the LocaVNational hires'prevailing wage during their participation in the approved Training Program. * Contractor shall develop an on-the-job training program (OJT) which prepares Nafional/Local hire workers for advancement and promotion to higher skill levels. * Contractor shall maintain a file on each Local/National hire which will include an evaluation schedule, certification, and promotion record. This information is to be made available to Esso upon request. R:.LOB05285\SAROSDMNuserdi\gps.012.doc | Specification No.: GPS-012 Page16 of 27 Rev- I 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN * Contractor shall maintain a file of Training Program compliance with local, regional and country labor laws and regulations. Records of compliance shall be made available to Esso upon request. * Contractor shall provide a training facility which is to be equipped with the standard tools and materials needed to provide training in those crafts germane to its Contract. * Contractor shall supply each trainee, including helper, craftsman, and foreman, a basic tool kit of the craft in which the trainee is receiving training. 2.8 Transportation and Housing Transportation and housing principles described for implementation in this section are based on local availability (i.e., work force supply and existing housing available) and distance from work site. Those principles are also based on previous experience of petroleum exploration projects in the Chad Doba area, the most recent one being the 3D seismic program of 1995/96. Contractor will provide, or make available, daily commuting transportation to workers living away from the work site. Pickup and return shall be at central points in multiple villages as necessary. One hour commuting one way is considered as being acceptable from an efficiency and safety standpoint If the work site moves during the work season, Contractor will establish a mobile bachelor housing camp for non-focal workers. The quality of the accommodations is described in the Camps and Facilities Specification and the Catering Services Specification. For the housing of non-local workers for fixed work sites and road upgrade work (infrastructure contract) whose homes are more than one- hour commuting from the work sites Contractor may choose to: * House the workers in a camp, or * Work with the community, local entrepreneurs and Esso to ensure that adequate housing and facilities are available in the local community to accommodate workers without displacing or adversely affecting the existing population or the environment or R:\LO805285\SAROSDMuserdir\gps.O12.doc Specification No.: GPS-012 Page 17 of 27 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN overloading existing infrastructure. In this case, Contractor will provide the non-local workers with a housing allowance. Esso's Employment and Business Coordinator(s) will facilitate finding a solution for the specific fixed work sites (for example, Field Facilities in Chad, Pump Staftons and Pipeline main camp sites in Cameroon). 2.9 Personnel Administration In its employment plan, Contractor will describe the way it will administer its Local and National personnel: . Method of employee payment (how, when, where to pay employees); minimum wages consistent with current in-country practices. a Compliance with national labor code. * Free medical assistance for on-the-job injuries and illness. Contractor's decision on whether to provide rotational shifts for non-local Nationals will be govemed by such factors as relative efficiencies of short term non-rotational hiring versus long term housing with rotating shifts. Contractor will, starting at the hiring phase, develop a tracking system for the experience, training, different positions, and performance evaluation of each construction worker for potential operations employment. Contractor will develop this database with Esso's Employment and Business Coordinator(s). 3.0 BUSINESS OPPORTUNITIES 3.1 General Obligations Esso is committed to constructing and operating the Chad Development and Export System Project in a way that provides Local/National businesses with significant opportunity. Note that a Local/National business is defined as one that is currently registered in the country (Chad or Cameroon), has an active local presence (office) and a recent history of successfully completed work. R:\LOB05285\SAROSDOMuserdir\gps.012.doc I Specification No.: GPS-01 2 Page 18 of 27 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN Esso's policies and procedures, as they pertain to Chad Development and Export System Project participation, will be binding on its Contractors, and on their subcontractors. Esso's policy covering Contractoes use of Chadian/Cameroonian providers of goods and services is covered in the Principal Document Esso will not pay premiums to Chadian/Cameroonian businesses solely to achieve National participation. 3.2 Basis for Plan Esso's business opportunity plan is based on: * the considerable experience that the company has gained with prior development projects, advice from govemment and non-govemment agencies, and * consultation within the Chad Development and Export System Project community. 3.3 Objectives Consistent with Esso's policies, Esso's business opportunity plan is designed to: * recognize qualified and competitive local and national businesses, * foster National businesses that will be able to supply high quality goods and services required by Esso's Chadian/Cameroonian operations at the lowest total cost both in the near and long term, and * provide support for Esso's and Contractor's proposed plans for housing labor. 3.4 Analysis of Potential Opportunities Esso's analysis of the work indicates significant potential for the Chad Development and Export System Project to positively impact the Chadian and Cameroonian economy. This estimate is based on the type R:\LOB05285\SAROSODMuserdir\gps-012.doc I Specification No.: GPS-012 Page 19 of 27 Rev 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN of skills and services that Esso has been able to identify as opportunities and the likelihood that the Chadian and Cameroonian populace will respond favorably. A list of likely areas for LocaYlNational business involvement in the Chad Development and Export System Project is presented in Table 1. 3.5 Esso and Contractor Responsibilities To stimulate and facilitate involvement of Chadian/Cameroonian entrepreneurs and businesses, Esso and Contractor(s) will provide Employment and Business Coordinator(s) for Chad and Cameroorn. The Esso and Contractor coordinators will work together to accomplish the following tasks: . develop and maintain an information system on Chad Development and Export System business opportunities, including required qualifications and work experience; * liaise between interested Local/National businesses and Esso/Contractor groups involved in planning and developing. segments of the Project This will include developing and conducting business and contracting seminars for LocalNational businesses that: - outline Chad Development and Export System Project opportunities, - inform Chadians and Cameroonians of how they might approach Esso/Contractor to become involved in the project, and - detail contracting and procurement policies and procedures (bidding process and documents, contracts, purchase orders and invoicing); * develop and maintain a list of potential Local/National suppliers for Project goods and services; * periodically visit Chadian and Cameroonian communities to provide information and discuss local business needs and concems; R:\L0B0528S\SAROSDluserdir\gps-012.doc I Specification No.: GPS-012 | Page 20 of 27 Rev.I 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN • review and steward the goods and services procurement plan developed by each Contractor. This will include developing and issuing periodic Business Opportunities Brochure which will list the goods and services required for the Project for the upcoming year, and * monitor Contractor/subcontractor bidders lists and resulting use of LocaUNational entrepreneurs and businesses to verify that qualified Nationals are offered a fair chance to participate and to identify areas where Local/National content can be increased without increasing Project cost. 3.6 Contractor Responsibilities In addition to the responsibilities outlined above, Contractor shall: * Prepare a Local Business Opportunity Plan that accomplishes the stated objectives of the Esso Plan. * Survey Chad and/or Cameroon (as applicable) to identify and quantify the availability of local Contractors with products/services useful to its work (adding to the list supplied by Esso). * Provide by 1 October and 1 April of each year an annual forecast of goods and service needs which could be filled by LocalNational entrepreneurs and businesses in the following calendar year. * Establish a formal process to ensure use of local Contractors/suppliers is optimized. Maintain data on contracting and procurement activity that can be used to verify that Contractor has complied with requirements. * Subdivide the subcontract service and supply opportunities into small packages that are compatible with the capabilities of Chadian and Cameroonian businesses, where practical. * Provide as much lead time as possible and reasonable for subcontractor bid preparation (normal lead time is expected to be one month). R:\henrS02\sarosdm\userdir\gps-012.doc Specification No.: GPS-012 Page 21 of 27 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN * Qualify and select COMPETITIVE Local/National Contractors. * Debrief unsuccessful bidders on request, indicating why their bids were not successful, while retaining the confidentiality of other bids. 3.7 Esso Responsibilities In addition to the responsibilities described in 3.6, Esso will: * Provide an unscreened list of potential Local/National businesses and suppliers for Contractors to use. * Audit Contractor business files to verify compliance in the sub- contracting and procurement process. * Maintain the right to approve selection of all subcontractors as per the approved source list discussed in Coordination Procedure 14- Subcontracting. * Compile Project-wide reports for govemment review, detailing efforts to involve local businesses. R:\LO805285\SAROSDM\userdir%gps-012.doc Specification No.: GPS-012 Page 22 of 27 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN TABLE I OPPORTUNITIES FOR LOCAL BUSINESS PROFESSIONAL SERVICES DESCRIPTION land survey registered surveyors to stake facilities and pipeline insurance legal advertising accounting lab analysis on and off-site testing printing brochures, forms, etc. TRANSPORTATION SERVICES DESCRIPTION truck transportation material from storage yards to site(s) rail transportation project materials and workers air transportation expatriate transportation to and from work sites bus transportation daily transportation of local workers to and from work sites marine transportation project materials and workers to offshore facilities travel agent hotel accommodations restaurant equipment rental leasing cars, light vehicles, etc. CONSTRUCTION SERVICESIGOODS DESCRIPTION site clearing pipeline right-of-way maintenance & removing trees, brush, shrubs from roads, work erosion control and storage areas, facilities (gathering stations & central treating facii'ties), camps, pipeline and pump stations, reconditioning of sites and roads after faci6ities/pipeline installation dust control application of water or other dust control materials on roads CONSTRUCTION SERVICESIGOODS DESCRIPTION R:LOBO5285\SAROSDMuserdi,egpr-O12.doc Specification No.: GPS-012 Page 23 of 27 Rev. 1 i29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN (Continued) road construction and maintenance construction and maintenance of haul road, access road and air strips gravel and rock hauling hauling of rock and gravel from quarry stock piles to area of placement for slope protection, pipeline river crossings, road construction, faciffites site preparation electrical, mechanical, instrumentation installing well tie ins, electrical power supply to telecqm towers, pipeline valve sites, cathodic protection general construction constructing masonry type buildings (including plumbing, electricity) and landfills (operation of landfills) equipment rental/purchase air conditioning, tools, welding machines MISCELLANEOUS SERVICES DESCRIPTION residential homes and apartments supplying residential homes and apartments during and after construction camp security providing security guards for temporary or permanent facilities water wells drilling/digging water wells in camps, facilities cathodic protection and anode installation cathodic protection wells along pipeline painting supplying and applying paint on vessels, piping, building, and tanks camp and office cleaning cleaning office and camp facilities fuel distribution facilities fences providing, installing, maintaining fences around temporary (construction, pipe yards) and permanent sites catering catering for camps (temporary or permanent) disease vector control spraying in vicinity of camps and perrnanent work sites office providing office space during construction and after photographic still and video photography and developing scrap metal recycling MISCELLANEOUS SERVICES (Continued) R:.\LOBO5285\AROSDM\userdirigps-012.doc - Specification No.: GPS-012 Page24of 27 Rev- 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN stevedoring misceltaneous supplying services such as third party consulting (solicitor, inspection, water analysis), laundry, dry cleaning services, clerical, employment agencies, mail delivery MISCELLANEOUS GOODS DESCRIPTION computer hardware and software office/household furnishings stationary/office supplies fuel and lubes industrial gases masonry blocks for construction facilities building cement laterite raw lumber and lumber supplies food stuffs vegetables, fnrits and meat for temporary and permanent camps general merchandise retail supplier R:\LOB05285\SAROSDMtVserdirgpsr012.doc | Specification No.: GPS412 Paqe 25of 27 Rev 1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN 4.0 LAND USE 4.1 Land Use Impacts Conversion of land from farming, grazing, fallow, and bush to oil production has the potential to create adverse social and economic impacts to rural households. Three levels of land use impacts are expected to occur: . Temporary conversion of land for pipeline and facility construction resulting in the loss of one to two years' plantings, but no displacement of households. * Permanent loss of a portion of land holdings at facility sites (including fallow and bushlands), impairing, but not eliminating, the economic viability of a household. * Permanent loss of land that results in household resettlement. 4.2 Land Acquisition Esso's and Contractors responsibilities may vary depending upon the country in which work is to be performed. In Cameroon, the Govemment has assumed responsibility for pipeline right-of-way and pump station facilities land acquisition. In general, permanent utilization of land resources in Cameroon is simplified because a large amount of project land use is temporary and will return to the owners at the close of construction activities. In Chad, the government has designated the Operator as the land purchaser. Facilities construction land requirements are, in general, permanent, which therefore may complicate and lengthen the land acquisition process. R:\LOB05285\SAROSDMWuserdir\gps-012.doc -Specification No.: GPS-012 Page 26 of 27 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SOCIOECONOMIC ACTION PLAN 4.2.1 Esso Responsibilities All contact with Chadian and Cameroonian authorities will be through the Esso representative. Esso will make available construction workspace for the following activities: * Pipeline Construction * Access Roads * Pump Station Construction * Pressure Reducing Station a Storage and Camp Sites _ Landfill Sites (Permanent) * Landfill Sites (Temporary) a Airstrips * River, Road and Railroad Crossings 4.2.2 Contractor Responsibilities * Establish the above mentioned sites for Work activities involved. * Maintain the sites in accordance with the Contract specification(s) goveming these sites. * Comply with all govemment statutes and regulations regarding the execution of the contract scope of work. * Be responsible for all reinstatement work to the satisfaction of the Esso representative. a Finalize right-of-way post construction damage claims to the Esso representative's satisfaction. R:\LOBOS285\SAROSDM\userdiWgps-012.doc | Specificabon No.: GPS-012 i Page 27of 27 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD (TEMPORARY) GPS-01 8 Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By 0 19 Nov 96 15 EHW CKO DJS Issue for Proposals 1 3c< ( ' (l7 15 MEF DJS Issue for EMP R:\LOB05285\SAROSDM\userdir\gps-018.doc Specification No.:GPS-018 Page 1 of 15 Rev. I 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD TABLE OF CONTENTS 1.0 SCOPE ....................................................................3 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS . ....................................................3 3.0 SEPTIC TANK SYSTEMS ..............................................................4 4.0 LEACH FIELD DRAINAGE SYSTEM .....................................................................6 5.0 DISTRIBUTION NETWORK .................................................................... 10 6.0 PERFORMANCE TESTS FOR SEPTIC TANKS .................................................... 12 7.0 MATERIALS FOR CONSTRUCTION OF SEPTIC TANK AND LEACH FIELD PIPING ............................................................. 12 8.0 CURTAIN DRAINS ............................................................. 13 9.0 CLOSURE OF SEPTIC TANK AND DRAINAGE FIELD SITE ............................... 13 LIST OF TABLES AND FIGURES TABLE 1. CODES AND STANDARDS ...............................................................3 TABLE 2. SEPTIC SYSTEM SETBACKS .............................................................. 6 TABLE 3. LEACH METHOD APPUCABIUTY ..............................................................7 TABLE 4. TRENCH AND BED DESIGN CRITERIA ......................................................9 TABLE 5. TRENCH DIMENSIONS .............................................................. 10 FIGURE 1 DISTRIBUTION BOX LEACH FIELD FOR LEVEUGENTLE SLOPING SITES ............................................................. 14 FIGURE 2 SERIAL DISTRIBUTION LEACH FIELD FOR SLOPING SITES ................ 15 R:\lobo5285\sarosdm\userdir\gps-Ot8.doc _Specification No.-GPS018| Page2of 15 Rev. I 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD 1.0 SCOPE This specification covers mandatory requirements for the design, installation and materials for septic tanks, leach fields and curtain drains for domestic sewage treatment and disposal. 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS 2.1 Table I lists the specifications, codes and standards which shall be used with this specification. TABLE 1. CODES AND STANDARDS American Society of Testinq and Materials (ASTM) Standards A 53 Pipe, Steel, Black and Hot Dipped, Zinc Coated, Welded and Seamless C 890 Minimum Structural Design Loading for Monolithic or Sectional Precast Concrete Water and Wastewater Structures C 1227 Precast Concrete Septic Tanks D 2321 Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications D 2729 Poly(Vinyl Chloride) (PVC) Sewer Pipe and Fittings F 405 Corrugated Polyethylene (PE) Tubing and Fittings F 412 Terminology Relating to Plastic Piping Systems F 449 Subsurface Installation of Corrugated Thermoplastic Tubing for Agricultural Drainage or Water Table Control F 758 Smooth-Wall Poly(Vinyl Chloride) (PVC) Plastic Underdrain Systems for Highway, Airport and Similar Drainage F 789 Type PS-46 Poly(Vinyl Chlonide) (PVC) Plastic Gravity Flow Sewer Pipe and Fittings 2.2 The local approving authority (local health departments, etc.) shall be contacted regarding septic tank specific requirements for leach field design materials and their installations. 2.3 The septic tank and drainage field shall be designed to handle the load capacity of 360 liters (95 gallons) per capita per day. R:'Jobo6285\sarosdm\userdir\gps-01 8.doc i Specification No.:GPSO018 Pace 3 of 15 Rev.1 29oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD 3.0 SEPTIC TANK SYSTEMS 3.1 Septic tanks shall be buried, watertight receptacles designed to receive wastewater (discharge from toilets, kitchens, baths, showers, laundry facilities and sinks) from camp facilities. The septic tank separates solids from liquids, provides limited digestion of organic matter, stores solids and allows the clarified liquid to discharge for further treatment and disposal. 3.2 Septic tanks may be cylindrcal or rectangular in shape. Septic tank design criteria shall be the following: a. Adequate sludge storage shall be provided to prevent settleable solids from flowing into the outlet pipe. b. Air scum volume above the liquid shall be at least 12.5% of the liquid volume but not less than 230 mm (9 in.) high for the entire surface above the liquid. c. Inlet baffle/inlet tee shall direct the flow downwards to prevent the scum layer from plugging the inlet. The inlet baffle/inlet tee shalr extend at least 450 mm (18 in.) below the water line but not more than 40% of the wafer depth. The inlet bafflelinlet tee shall be at least 150 mm (6 in.) above the water line. The top of the tee shall be a minimum of 50 mm (2 in.) below the underside of the tank cover. d. Outlet baffleloutlet tee shall retain the floating scum layer and prevent scum from enterng the outlet pipe. The outlet baffle/outlet tee shall extend at least 450 mm (18 in.) below the water line but not more than 40% of the water depth. The outlet baffle/outlet tee shall extend 150 mm (6 in.) above water level. e. Retention period shall be not less than 48 hours at maximum sludge depth and scum accumulation. f. Surface area to depth ratio for all chambers shall be maximized. The ratio shall be greater than 2.0. g. Vents shall be provided to allow the escape of methane and hydrogen sulphide gas. R:\lobo5285\sarosdm\userdir\gps-01 8.doc | Specification No.:GPS-1.8 Page4of 15 Rev. I 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD h. Access to the tank interior shall be provided for inspection and cleaning. i. Septic tank capacity shall have a safety factor of two to three times the daily design flow. j. Grease traps shall be installed upstream of septic tanks to remove grease before wastewater enters the tanks. Grease retention capacity in kilograms shall be at least equal to 25% of the flow capacity in /min (grease retention capacity in pounds shall be at least equal to twice the flow capacity in gallons per minute). k. Invert of the outlet pipe from the septic tank shall be a minimum of 100 mm (4 in.) above the invert of any distribution pipe in the leach field. I. The diameter of both the inlet and outlet lines should be the same, and should be a minimum of 100 mm (4 in). 3.3 The following shall be provided for the top slab: a. Access openings in chamber to permit inspection, pump-out and sludge removal. b. Covers with plasfic or epoxy-coated steel bar handles shall be provided for the openings. Covers must be prevented from moving laterally if sitfing on top of the slab. c. Locks for covers that are flush with or above the ground to prevent unauthorized access to the septic tank. d. If the tank slab is below grade it shall have a minimum soil cover of 300 mm (12 in.) and manhole risers shall be provided to raise access openings 150 mm (6 in.) above finish grade elevation. e. Where access opening or an inspection opening has a dimension greater than 200 mm (8 in.) a label of non-corrosive material shall be placed in a prominent place to wam everyone, in French and English, that 'Entrance into the Tank could be Fatal." 3.4 Minimum setbacks for septic tank systems are shown in Table 2. R:Nlobo5285\sarosdm\userdir\gps-01 8.doc Specification No.:GPS-018 Page50f 15 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD TABLE 2. SEPTIC SYSTEM SETBACKS Features Distance Septic Tank Distance To Leach Field (meters) (meters) Building (Outside Wall Face) 3.0 10.0 Property Boundary 3.0 3.0 Surface Water 15.0 15.0 Cut or Embankment 8.0 60.0 Nearest Dug Well or Other Source of 60.0 100.0 Domestic Water Supply Water Service Pipes 3.0 8.0 Walks and Drives 2.0 2.0 Large Trees 3.0 3.0 3.5 Septic tanks shall be designed for loads in accordance with ASTM C890. If the septic tank is located in an area where there is access to traffic then the septic tank shall be designed for an AASHTO HS-20 Load. 4.0 LEACH FIELD DRAINAGE SYSTEM 4.1 The leach field drainage system shall be sited and designed to provide the physical, chemical and biological environment necessary for the wastewater renovation through the soil. Major factors which shall be considered in the design of leach fields include the following: a. Local soil conditions; soil characteristics including texture, structure, stratification, bulk density, grain size distribution and coefficient of permeability. b. Depth of bedrock and presence of bedrock fissures or fractures. c. Saturated soil and high groundwater table; the groundwater table must be a minimum 1 m (3 ft.) below the bottom of the leach field trench. d. Surface slope. e. Presence of ponding and/or flood conditions. f. Per capita sewage flows. g. Design life of the system. R:\lobo5285\sarosdm\userdir\gps.018.doc Specification No.:GPS018 Page 6of 15 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD 4.2 The design of the leach field system shall consider that soil bacteria break down soluble organic pollutants and that physical filtering action of the soil removes suspended particles, including sewage bome bacteria and viruses. This action causes the production of slimy films of bacteria on the soil particles in the leach fields. In naturally well drained soils such as sand, sandy loam and loamy textures, the crust (slimy film) impedes the flow of water into the soil horizons and will be unsaturated and aerobic. This results in an increase of the contact time with the soil and uftimately of the treatment efficiency. Clay soil, on the other hand, would be nearly saturated and anaerobic and hence would require greater trench length to achieve a satisfactory treatment. 4.3 Percolation Test 4.3.1 The percolation characteristics of the soil shall be used to determine the ability of the soil to perform as a leach field. A minimum of four separate tests shall be carried out in four holes spaced uniformly over the proposed leach field. If the test,results are not consistent within :30%, additional tests in different locations may be required by ESSO. 4.3.2 Leach fields shall consist of conventional trenches and beds, or disposal mounds or a combination thereof based on the geotechnical conditions and field survey information. Table 3 provides a guide for the selection of disposal methods under various site constraints. TABLE 3. LEACH METHOD APPLICABIUTY Site Constraints Depth to Water Slope Small Method Soil Permeability Depth to Bedrock Table Lot Very - . - ______ -~~~~~~~~~~~~~~~~~ size Rapid- Slow . Shallow Rapid Mosdeate VerySlow and and Deep Shallow Deep 0-5% 5-15% 15% PorousI Nonpsrous Trenches x X( x x x x x X2) Beds X X X X X Mounds x x x x x x x x x x x "X" means system can function effectively with that constraint. Notes: 1. Construct only during dry conditions. Use trench configuration only. 2. Flow reduction suggested R:Uobo5285\sarosdm\userdirXgps-018.doc | Specification No.:GPS-18 8 Page 7 of 15 Rev. I 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD 4.4 Trenches and Beds 4.4.1 Trenches shall be 300 mm to 900 mm (1 ft. to 3 ft.) wide and up to 30 m (100 ft.) or more long. Only one distribution pipe shall be installed per trench at the designed slope with the primary infiltration surfaces on the bottom and side walls of the excavation. The distribution pipe shall be laid with a minimum 150 mm (6 in.) thick bed of washed, graded, crushed rock or gravel, 20 mm to 50 mm (3/4 in. to 2 in.) in size. This material shall be placed in the trench bottom and levelled true to grade prior to laying the pipe. Aggregate shall be placed around the pipe until only the top center is still visible. 4.4.2 A final check of grade and alignment shall be made to confirm that the designed slope has been met. Then additional aggregate shall be placed in the trench so that the lines are covered with a minimum depth of 50 mm (2 in.) above the pipe. The trench shall be backfilled further to grade level with suitable material. 4.4.3 The sizing of trenches and beds is a function of the characteristics of the infiltrative surface. Table 4 shows several soil types, soil percolation rates and trench and bed loading rates. However, design rates shall be based on percolation test results. R: JoboS285\sarosdm\userdir\gps-018.doc | Specification No.:GPS-018 Page 8 of 15 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD TABLE 4. TRENCH AND BED DESIGN CRITERIA Soil Type Percolation Rate Trench Bed Bottom Area (minutes/cm) Application Rate (1 Additional Criteria ________________(cm/day) Gravel, coarse 0.4 Not suitable43J Trenches shall not be used in sand highly permeable soils. Coarse to 0.4-2 5 medium sand Fine sand, 2-6 3 loamy sand Sandy loam, 6-12 2.5 loam Loam, porous 12-14 2 silt loam Silty clay 24-48 1() Use of trenches shall be loam, clay limited to exceptional loam(4) circumstances if percolation rates are lower than 24 min/cm. Trenches shall never be used where percolation rate is less than 48 min/cm. Notes: 1. May be suitable estimates for sidewall infiltration rates. 2. Rates based on septic tank effluent from a domestic waste source. A factor of safety may be desirable for wastes of significantly different character. 3. Soils with percolation rates < 0.25 min/cm (1 min./in.) can be used if the soil is replaced with a suitably thick (> 600 mm (2 ft.) layer of loamy sand or sand. 4. Soils without expandable clays. 5. These soils may be easily damaged during construction. R:'Jobo5285Xsarosdm\userdir\gps-18.doc ISpecification No.:GPS-018 Page 9 of 15 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD 4.4.4 As a design guide, Table 5 shows the suggested dimensions of trenches. TABLE 5. TRENCH DIMENSIONS Width Length Depth Below Grade Cover Spacing Between Width Length Depth Below Thickness Trenches (mm) {m}) (mm} (mm) (m) 300 to 900 30 450 to 600 (1) 150 min. 1.8 minimum (2) Notes: 1. May be deeper if more suitable honzon exists and groundwater table is low. 2. Measured from side wall to side wall; depends on design and on percolation characteristics of the soil. 4.5 Disposal Mounds 4.5.1 Mounds shall be used in relatively impermeable soils or in areas with shallow water tables or porous bedrock. Disposal mounds shall consist of trenches or beds constructed of suitable fill material placed above the existing grade. Effluent from septic tanks shall be siphoned or pumped into the mounds (usually medium to coarse sand) through distribution networks. 4.5.2 Mounds shall extend beyond the field a minimum of 3 m (10 ft) and enough to prevent seapage out of the sidesand. 5.0 DISTRIBUTION NETWORK To achieve uniform application of effluent over the entire infiltrative surface area depending upon suitability and terrain, either of the two methods described herein shall be adopted. 5.1 Distribution Box Network (Figure 1) 5.1.1 The system shall use either of two different types of pipes: a. 100 mm (4 in.) diameter PVC pipes having two rows of holes near the invert 450 mm (18 in.) off vertical center. The holes shall be 10 mm to 20 mm (1/2 in. to 3/4 in.) in R:'Uobo52858sarosdm\userdirXgps-O18.doc I Specification No.;GPS-018 Page10Of 15 Rev. 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD diameter and spaced 75 mm (3 in.) apart. PVC solid pipes 100 mm (4 in.) in diameter shall be used from the distribution box to the perforated pipes. b. 100 mm (4 in.) diameter PVC drain tiles with 6 mm to 12 mm (1/4 in. to 1/2 in.) joint openings. 5.1.2 The basic system design shall be as follows: a. The perforated pipes shall be laid approximately level and the solid pipes shall be sloped depending upon the terrain. b. Effluent flows by gravity from the distribution box through the solid pipes to the perforated pipes or drain tiles. c. The number of pipes used and the distance between them is a function of the characteristics of the soil, percolation rate and the bottom area application rate. d. The 100 mm (4 in.) PVC perforated pipes or drain tiles. shall be interconnected by a solid common header of 100 mm (4 in.) PVC pipe and distribution box. e. Outlet inverts from the distribution box shall all be at the same elevation and the inlet invert shall be 25 mm (in.) above the outlet inverts. 5.2 Serial Distribution Method/Relief Line Distribution Network (Figure 2) 5.2.1 This system uses overflow or relief lines between trenches in place of distribution boxes. Similar to the distribution box network in paragraphs 5.1.1 and 5.1.2, this method also uses a combination of solid 100 mm (4 in.) PVC pipe and perforated 100 mm (4 in.) PVC pipe or open jointed drain tiles. 5.2.2 The basic system design shall be as follows: a. The invert of the overflow section shall be located near the top of the porous media in order to use the maximum capacity of the trench. R:.'obo5285\sarosdm\userdir\gps-018.doc | Specification No.:GPS-018 | Page l1 of 15 Rev. 1 29Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD b. For the gravity system, the invert of the overflow from the first absorption trench shall be at least 100 mm (4 in.) lower than the invert of the septic tank outlet. c. Relief lines shall be separated far enough apart to prevent short circuiting (1.8 m to 3 m (6 ft. to 10 ft.)). d. Pipe fittings for relief lines shall be selected to suit the slope. e. A minimum of 1.8 m (6 ft.) (horizontal) of undisturbed earth is recommended between absorption trenches. f. Distribution pipe in absorption trenches shall extend an equal distance (approximately) in both directions from the solid interconnection and relief pipes. Distribution pipes and trenches shall be level and normally follow slope contours. 6.0 PERFORMANCE TESTS FOR SEPTIC TANKS 6.1 Hydrotesting shall be used to demonstrate the strength of the tank to resist anticipated extemal and intemal loads. 6.2 Testing for leaks to determine leakage below the ground water level shall be performed using or water pressure testing. Water pressure testing shall be performed by sealing the tank, filling with water and let stand for 24 hours; refill the tank; the tank shall be approved if water level is held for one hour. 7.0 MATERIALS FOR CONSTRUCTION OF SEPTIC TANK AND LEACH FIELD PIPING 7.1 Septic Tanks 7.1.1 Septic tanks shall be one of the following: a. Precast or cast-in-place reinforced concrete, watertight, structurally sound and resistant to excessive corrosion and decay. Inlet and outlet pipes shall be sealed with a compound that bonds both the concrete and pipe materials. R:\Iobo528\sarosdm\userdir\gps-01 8.doc |Specificaton No.:GPS-018 Page 12 of 1 Rev. I 1 29 Oct 97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD b. Steel, epoxy or bitumen coated. c. Fibreglass; floatation collars may be required if the groundwater table is high. 7.2 Piping Materials for Leach Field 7.2.1 Pipes shall be perforated and solid PVC, 100 mm (4 in.) in diameter, (including fittings) in accordance with ASTM D 2729. 7.2.2 As an altemate to perforated pipes, 100 mm (4 in.) diameter PVC drain tile with 6 mm to 12 mm (1/4 in. to 112 in.) joint openings may be used. 8.0 CURTAIN DRAINS If required, curtain drains shall be installed to prevent natural (ground) water seepage into a leach field. The drains shall be installed in accordance with ASTM D 2321 or F 449 and be at least 300 mm (1 ft.) deeper than the leach lines, and 2.4 m to 3.0 m (8 ft. to 10 ft.) from the leach line. The curtain drain shall be directed to a free outlet 9.0 CLOSURE OF SEPTIC TANK AND DRAINAGE FIELD SITE Before closure of a septic tank and drainage field site can be considered complete, the following items shall be completed: * The septic tank shall be pumped empty. The sludge shall be disposed in a location and manner acceptable to ESSO. * The septic tank shall be removed from the ground, repaired if necessary and reused. The hole shall be replaced with suitable fill. The topsoil and vegetation shall be replaced and suitable soil erosion mitigation measures shall be employed. * The ends of all underground pipes shall be properly plugged. R:'Jobo5285Ssarosdm\userdir\gps-01 8.doc Specification No.:GPS-018 Page 13 of 15 Rev. 1 29 Oct97 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD FIGURE 1 - DISTRIBUTION BOX LEACH FIELD FOR LEVEL/GENTLE SLOPING SITES ENDS OF RUNS CAPPED w~ ~ I II..g : tRAN TES6-12m= r4t : :OR lOOmm DIL J;;(. , DISTRIBUTION BOX PVC PERFoRATED d IRA FIRMLY SUPPORTD IES. IN LEVEL PSMTON INLET ALL PIPE R4VERTS AT- ... i : SAME ELEVATION lo0mm DIAPE l . WEROG . HT WATER TA;LT I O JOINPE.ROS SOIL C " i g 14 , . .rA] ~~~~~~~a e4 f 15 _ . . }> ~~~~~~~~~L. 1At WIN. PA ,3W, | - _ _ _ ~~~~~~~~~~GENTIE SLOPE °12 ROCK,. EUGH WrATER TABLE ------- OR IYPERVIOUS SOEL CROSS SECTION A-A NOTES: 1: All DBDIMENSIS IN YllLlff:ES UNLESS 07H121flS NOTED NOT TO SCAL. R-\Mobo5285\sarosdmYuserdir\4gps-O18.doc |Specification No ........GPS,0S1| Page 140of 1 ESSO EXPLORATION & PRODUCTION CHAD INC. GENERAL PROJECT SPECIFICATION FOR SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD FIGURE 2 - SERIAL DISTRIBUTION LEACH FIELD FOR SLOPING SITES FLOW FROM SEPTIC TANK SOLID PVC PIPE PERFORATED DISTRIBUTION PIPE (1800-3000mm) DISTRIBUTION PIPE ENDS CAPPED DISTRIBUTlON PIPE AND SOUD RE1IEF LINE PERFORATED PIPE OR OPEN JOINTED TILE TRENCH TO BE LEVEL (PVC SOuD PIPE) TO SERVE AS DISTRIBUTION PIPE 1800-3000mm IN LENGT DISTRIBUTION PIPEA SOLD PVC PIPE DISTRIBTMON PIPEf .BSORPTION TRENCHES oSOIID RELIEF LINE TO FOLLOW CONTOURS . / (PVC SOLID PIPE) 1800-3000mm IN LENGTH DISTRIBUTION PIPE SOUD PVC PIPE Ii DISTRIBUTION PIPE ~A SOLID RELIEF LINE DISTRIBUTION PIPE DISTRIBUTION PIPE INVERT OF OVERFLOW FROM FIRST ABSORPTION RELF PIPE IVERT LEVL AT ELEvATIoN WHER PIPE IN ALJU IH TRENCH IS 3/4 FUI-1 OMA 0unCUI STONE OR CLEN GRAVEL S-ERT OCA=A NB: YMAT I ONS IN AlUWn= JNLES O TRISH KOID NOT TO SCALE. R:\Iobo5285\.sarosdm\userdir\gps-018.doC Specification No.:GPS-01 8 agelo 15 Rev. 1 29O3ct97 ESSO EXPLORATION & PRODUCTION CHAD INC. CHAD DEVELOPMENT PROJECT _G .ccr hOi99% for a resulting ash organic content <1.0% carbon by wt. * Minimum combustion temperature 815 °C (1 500°F) in primary stage and 982 °C (1 8000F) in secondary stage. * Thermal NOx <45 ppm * Particulate loadings < 0.10 grains/dSCF corrected to 12% C02 * Unit must have a minimum of two combustion stages. * Flue Gas residence time > 1.5 seconds. * Unit will be operated 8 hours/day. * % opacity < 5. * Input material density 2000 lbslyd3. * A shredder shall be provided to reduce all waste feed to 3 in. max. (widest dimension) 4.2 Incinerator will be provided with low fire system capable of maintaining a unit temperature of 105 °C (220°F) minimum. 4.3 The incinerator instrumentation must be kept to a minimum for long term maintainability and ease of operation. The unit will be designed for manual operation to the extent possible. UFdtc OSkata 66400CPMTkWROPROCUOSSPECWEPORTPUMPSTAtSPECStREYO7-1-10doc.GH ESSO EXPLORATION & . 7 PRODUCTION CHAD INC. CCS 7-1-10 WASTE INCINERATOR Page 6 of 12 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION 4.4 Waste Classification The classification of potential wastes to be incinerated shall be as per the following table. TABLE 2 Waste Type Description Typical Moisture Density Heat Content Analysis wt % kgfmn kJlkg 0 Dry industrial & Cardboard, dry 10 5 8500 commercial paper, wooden rubbish pallets, floor sweepings, plastic bags I General Cardboard, 25 10 6500 industrial paper, floor commercial & sweepings, up domestic to 20% kitchen rubbish waste 2 Refuse Kitclhen & 50 15 4300 domestic wastes, wet paper, floor sweepings, garden waste 3 Pathological Hospital 10-30 5-15 4500-8000 materials dressing, disposable bedding, gowns. etc. 4 Pathological dead animals, 85 25-75 1000 remains human tissue, etc. 5 Industrial Industrial - 850-960 40,000 wastesloil process wastes sludge 6 Semi-solid and Combustibles Variable Variable solid wastes requiring according to according to hearth, retort, or waste survey waste survey grate buming equipment Note: Waste classification based on Handbook of Industrial Waste Disposal, Tables 9-1 & 9-3. AlFdhow05data1\06864000tCPNMWOROPROCUOBSPECsEXPOR'nPtMPSTAISPEC9REVOk7-1-10.d:GH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 7-1- 0 WASTE INCINERATOR Page 7 of 12 TECHNICAL Rev. 0 04 Nov 96 SPECIFICAlION ._. #4.5 Design Basis The design basis, waste production rate, required incinerator capacty, operational features and fuels supplied shall be specified in a waste incinerator data sheet to be supplied to ESSO for approval. Capacity will be as indicated in 1.4. Contractor may use the incinerator during construction provided the system is fully refurbished, operational and does not show unreasonable wear when tumed over to ESSO in accordance with paragraph 7.4. 4.6 Body Casing a. The incinerator assembly shall be made of carbon steel plate and adequately reinforced with structural steel members. b. The primary and secondary chambers shall be completely seal welded to prevent the inclusion of incoming air. 4.7 Access for Inspection and Maintenance a. Both primary and secondary chambers shall be provided with' adequate access doors for waste loading, inspection, maintenance and ash removal. b. Each door assembly shall include a sealing device adequate to stand the internal temperature of the chambers and to prevent air from outside. Unit shall be designed to hold a minimum of 12.5 mm (0.5 inch) water negative pressure. c. Supplier shall provide adequate ladder(s) and plafform(s) for easy access to perform inspection and maintenance. 4.8 Sight Glasses a. Both primary and secondary chambers shall have sight ports or sight glasses permitting safe observation of the combustion process throughout the operation. nFdho-0SWa4al \686400CPFTO RDPROC\OBSP EClEXPORTPUMPSTA\SPECS%REV0\7-1-tO.doc:GH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 7-1-10 WASTE INCINERATOR Page 8 of 12 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION 4.9 Refractories All refractory design and material shall be suitable for this service. b. The calculated cold face temperature of the exterior surface of the casing shall not be more than 82 0C (1800F) based on a design maximum ambient temperature of 42 °C (1 08°F). c. The castable refractory shall be acid gas resistant and secured to the inside of the steel casing with anchors made of stainless steel. 4.10 Waste Loading and Ash Removal Facilifies Supplier shall propose a system with related facilities to ensure the operation can be carried out efficiently and safely with minimum involvement of the operators- Supplier shall provide design such that ash removal from the primary chamber will be initiated automatically at the end of the cool-down cycle. 4.11 Burner and Ignition System a. Supplier shall provide only designs that have been in service for at least 2 years. b. The primary and secondary burners shall be flange mounted on the incinerator casing and piped to a single fuel supply line for ease of installation. c. All bumers shall be capable of firing diesel. Electric ignition system shall be provided. d. All bumer combustion air shall be supplied by air blowers. These air blowers shall be mounted on the incinerator casing with ducting leading to the ports of the combustion chambers. e. Blowers and motors shall be provided with external lubrication. Lubrication facilities shall be grouped together for easy access for maintenance. f. Burners with high tumdown ratio shall be used for the purpose of warming up combustion chambers, good modulation of control and fuel efficiency. X\Fdho-05dalal \D864000\CPtlrWORDPROCUOBSPEC\EXPORT,PUMPSTAlSPECS\REVOV-1 -1O.dcGH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 7-1-10 WASTE INCINERATOR Page 9 of 12 TECHNICAL .Rev. 0 04 Nov 96 SPECIFICA1ION . 4.12 Instrumentation and Controls a. Instrumentation shall follow the requirements outlined in CCS 15-1- 200 for Small Oil Fired Heaters. b. Supplier shall provide a complete Burner Management Package (BMP) for fuels as outlined on data sheets. BMP shall monitor pilots, main bumers, fans, fuel supplies, combustion chambers, stack, and all other required control parameters. BMP shall also shutdown the incinerator upon a system failure and/or detection of a hazardous condition. c. Temperature control shall be segmented per bumer gallery. Temperature control of the stack shall be included, in the control scheme, as required to meet waste incineration requirements including medical, municipal and industrial wastes. d. Other control and monitoring parameters to be considered are: - flow rate of waste to be incinerated - proper/complete incineration - emission concentration and levels allowable of incinerated products including NO,, CO, C02, 02, S02, PM,, and HCI. e. Control shall be stand-alone electronic (PLC) per CCS 15-6-3. f. Local panels shall be suitable for outdoor and tropical use and meet CCS 15-11-1. g. Supplier shall submit with its bid the restrictions of controls/control panel and if control room environment is required. h. Supplier shall supply the control system completely coordinated, constructed, wired, and checked out at factory. i. Supplier shall route/terminate locally mounted instruments through a skid edge junction box, to the control panel. Local control panel may have the junction box integral. j. Input and output signals shall be provided via a PLC Serial Communications Port for the following: 1. Stack temperature 2. Stack temperature set point 3. Incinerator common alarm. INFdho0a\06814000\CPMWROPROOEEPORTWUMPSASPEC\RE7-1-1 .dXGH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 7-1-10 WASTE INCINERATOR Page 10 of 12 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION __ 4. Incinerator/component running status. 5. Incinerator shutdown. 6. Emergency Shut Down input. 7. Low fire state (control input). 8. Perrnissive to start (control input). 9. Local ESD 10. Any other available PLC register information. #k. Contractor's selected Supplier's standard package shall be accepted provided that it meets or exceeds ESSO standards. I. All instruments shall appear on a P&ID in compliance with Supplier ISA Standards, tag numbers shall be assigned by ESSO. M. All instruments shall have ISA type data sheets. #n. All control devices and systems shall be rated for IP66 and submitted to ESSO for approval. O. Instrument tagging shall follow these guidelines: in-line equipment and major components such as PLCs shall have a nameplate with the following information equipment identification number (instrument tag number), pressure rating of pressure containing parts, supplier's name, model, serial number, operating range, materials, size of outer and inner components, voltage appraisal class, type, and range as applicable. p. Information plates and name tags shall be securely attached by mechanical means with threaded fastener or fluted rivets. Adhesive fastening method is not acceptable. Only the instrument number tag may be fastened by stainless steel cable connected with stainless steel crush clamps, or 18 gauge stainless steel wire. q. PLC shall have a communications port using Allen Bradley Data Highway Plus for interfacing to the Pipeline Automation System. r. All transmitters shall be Honeywell Smart Transmitters. s. All electrical/electronic equipment and devices must be listed and labelled by a Cenelec recognized testing agency for their intended use. 4.13 Noise Requirements The incinerator contribution to sound level shall be in accordance with CCS 2-1-1. INFdhoO0tdat2 SB684oo0CPRMWORDPROC\OBSP\EPORPUMPSTA\PEC - 7-1-10 GH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 7440 WASTE INCINERATOR Page 11 of 12 TECHNICAL 0 04 Nov 96 SPECIFICAllON .___ 4.14 Emission Requirements a. The air quality standards of CCS 21-20-108 shall be met. 4.15 Area Classification Area classification for the location of the incineration system shall be specified in accordance with contract documents associated with this specification. 5.0 MATERIALS 5.1 Unless otherwise stated in this specification, the materials of construction shall be the Supplier's standards that are suitable for the process and environment and have been proven successful in similar services. 5.2 A certificate of material compliance is required where special alloys other than carbon steel are being used. 6.0 FABRICATION 6.1 The entire incineration system with its components shall be fabricated and packaged prior to shipment to the field site as much as possible to minimize field work. 6.2 Supplier shall fabricate and layout the whole system within the maximum dimensions permissible for transportation and be ready for start-up with minimal field assembly except to interface with the required site facilities. 7.0 INSPECTION AND TESTING #7.1 The inspection and quality control program shall be carried out and executed in accordance with CCS 20-1-1 and as approved by ESSO. 7.2 Contractor shall fumish ESSO with copies of all inspection and quality control documents in accordance with CCS 20-1-1 and CCS 20-1-3. 7.3 Instrument and control devices/systems shall be factory acceptance tested and approved prior to shipping. 7.4 Contractor shall refurbish, reinspect and acceptance test the incinerator as approved by ESSO if the incinerator is used during construction per paragraphs 4.5 and 9.2 \EFdho-5datal468640OXCPMT\WORDPROCUOSPEEXPORTpUMpsTALSPECSWZVO\7-1-10.Coc GH ESSO EXPLORATION & PRODUCTION CHAD INC CCS 7-1-10 WASTE INCINERATOR Page 12 of 12 TECHNICAL Rev. 0 | 04 Nov 96 SPECIFICATION l__ _ _ _ _ _ _ __ _ _ _ _ _ _ _ 8.0 INSTALLATION #8.1 Once approved by ESSO, Contractor shall install the incinerator system described in Section 4, above, including any accessories, interfaces and other related support services required to start-up and operate the incinerator system. 9.0 PERFORMANCE 9.1 Contractor shall guarantee that the system meets the, requirements stated in this specification. It shall be the responsibility to correct any deficiencies at a time agreeable to ESSO. 9.2 Contractor may operate the incinerator system as needed until construction activities have been completed. Contractor shall incinerate its domestic, industrial and construction wastes as specified in Contractor's approved Waste Management Plan, as well as any start-up wastes generated during this period as approved by ESSO. Waste incinerated prior to Facility Acceptance may be incinerated in a Temporary Incinerator(if Contractor elects to use as per GPS 006) or in the incinerator installed for ESSO (provided that the condition of the incinerator meets requirements of ESSO and paragraphs 4.5 and 7.4. 10.0 OPERATIONS MANUALS 10.1 Supplier shall provide ESSO with complete manuals for operation and maintenance of the incinerator system and related accessories, interfaces, and support services. X\Fdh-Svdata1V)864=\CPMTswORDPROCUO8SPEC\E.VORT\UZMPSTAlECSkREVO%7-1-1O.dccGH ESSO EXPLORATION & PRODUCTION CHAD INC. Ccs 11-10-1 WATER WELLS Page 1 of 10 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION CHAD DEVELOPMENT PROJECT TECHNICAL SPECIFICATION Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By 0 t%ov 96 10 E A U IFP Issue -\Fdho151datal f6864OOOtCPMTWORDPROCCNOBSPEC\EXPORT\PUMPSTAOSPECSCREVMI 1-1 O-1 DOC:9h ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 11-10-1 WATER WELLS Page 2 of 10 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION TABLE OF CONTENTS 1.0 SCOPE ...................... . 3 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS .3 3.0 GROUND WATER SUPPLY AND WELLS .4 4.0 PUMP CONTROL ...................... .9 S.0 WELL PUMPS AND MOTORS .9 LIST OF TABLES TABLE I .......3 nFdho-5tatalro68640 \CPM RDPROCUOBSPECEPOR'nPtUMPAPEE1t-lc 1.XC:gh ESSO EXPLORATION & CCS 11-10-1 PRODUCTION CHAD INC. WATER WELLS Page 3 of 10 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION 1.0 SCOPE 1.1 This Specification covers the requirements for the design of the potable! utility water and fire water suppty from ground water wells. 1.2 A pound sign (#) indicates that ESSO review/approval is required before design and/or construction is finalized or equipment is purchased. 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS 2.1 Table 1 lists the standards, codes, and specifications which shall be used with this Specification. TABLE I SPECIFICATIONS CCS 3-2-3 Fire Water Systems 3-7-1 Piping Flexibility and Supports 3-12-1 Valve Selection Criteria 11-10-2 Potable Water Treatment, Storage and Distribution 1 5-0-100 General Instrument Specification 16-7-1 Motor Applicafion 16-9-1 AC Motors 17-6-1 Fire Protection Systems for Buildings 19-1-10 Painting Above-ground Facilities 19-5-1 Cathodic Protection CODES AND STANDARDS API 5L Line Pipe AWWA AIO Wells A200 Steel Pipe (Over 150m) C508 Check Valves C654 Disinfection of Wells El 01 Vertical Turbine Pumps - Line Shaft and Submersible Types ASTM A53 Standard Specifications for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless C33 Concrete Aggregates -lFd1o005ddata1O6864OXC. PM7\WORDPROCU085PEC\EXPORTtPUbPSTAC9SPECS\REv0\11 1-l.1docgh ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 11-10-1 WATER WELLS Page 4 of 10 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION 3.0 GROUND WATER SUPPLY AND WELLS 3.1 The water supply source is to be developed from an aquifer from which the quality and quantity desired can be produced # a. A hydrogeologist, approved by ESSO, shall be retained to advise on well location, spacing, design and construction. The wells shall comply with AWWA Al AO. b. Wells shall be located to avoid sources of surface or subsurface pollution and/or flooding. The elevation of the top of the wells should be at least 600 mm (2 ft.) above the highest expected flood level. c. Number of wells, size and depth of borings, gravel packs, screen sizes, well casings, sizes, number and capacity of multistage submersible pumps and electric motors, and size of discharge piping and other necessary components shall be designed te meet the required discharge pressures and flows as per CCS 3-2- 3 and CCS 11-10-2. d. Spacing of wells shall be such that the drawdown curves do not overlap for adjacent wells (including hand-dug wells and other watering holes used by the local population). e. The well design shall ensure that the screen section is always fully submerged and that any fluctuations in the elevation of the top of the saturated zone have been taken into account. f. A water supply well shall not be located within 500 m (1640 ft.) radius of any landfill. Test Hole & Alignment 3.2 Contractor shall drill a test hole to a depth required to reach and penetrate water bearing strata and continue for 3 meters (or 10 ft.) into impervious stratum immediately below the lowermost sand layer. a. Perform Eastman inclination single shot survey or - other acceptable survey on each 20 meter (or 65 ft.) increment of drilling. Test hole shall be vertical within one degree from true vertical and vary not more than 75 mm (or 3 in-) in any 20 meters (or 65 ft.). J:k 1S640CPM.10OPROCUOSSPECtEXPORTPUMPSTAtSPECStREV0tI I -tO-1. D0C:vs ESSO EXPLOFRATION & PRODUCTION CHAD INC. CCS 11-10-1 WATER WELLS Page 5 of 10 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION # b. Obtain samples of each water bearing sand stratum penetrated. Each sample shall be retained in a sack or container, plainly labeled, showing depth from which sample was obtained and location of test hole from known referenced point. The Contractor shall obtain a sieve analysis on each sample taken. In case of abandonment, seal well with gristles clay, starting from the bottom by pumping to within 6 meters (or 20 ft.) of ground surface. Fill remnaining 6 meters (or 20 ft.) with Portand cement by the Haliburton process or an altemate method approved by ESSO. c. A complete drilling log shall be available for each test hole. The Contractor shall maintain an accurate log of location of top and bottom of each stratum penetrated. Well Materials 3.3 The water well components shall be made from the following materials: a. The main casing material shall consist of steel, API 5L Grade B or ASTM A53 Grade B, seamless, with standard couplings. b. Screen shall be Type 304 stainless steel, continuous slot, wire- wound design to provide maximum inlet area consistent with strength requirements. Exact screen gauge openings shall be determined after sieve analysis, if applicable, has been conducted on sand samples obtained from test hole. c. Blank pipe shall be installed between sand formations and 3 meters (or 10 ft.) below the bottom screen section. Blank pipe shall also extend above the bottom of main casing. Blank pipe shall be the same type and weight as screen pipe. d. Gravel shall be clean, well-rounded and graded, smooth and uniform having a specific gravity of 2.5 or greater. The grading shall meet the requirements of the screen manufacturer. The gravel shall be thoroughly disinfected with a 50mg/I chlorine solution as it is added to the well cavity. The gravel size shall be recommended by the Contractor after the results of the sieve analysis are obtained. # e. All other materials used such as drilling fluid and cement grout shall require ESSO's approval. % Fdho05\ata1\0686400\CPMWORDPROCUO8SPECWXPORT%PUMPSTA\SPECSIREVOtl1-l.doc:gh ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 11-10-1 WATER WELLS Page 6 of 10 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION Well Construction 3.4 Each water well shall be constructed to meet the following guidelines: a. For the entire depth of the main casing, ream well hole to a minimum 100 mm (4 inches) greater than the outer diameter of main casing. The main casing shall extend from 500 mm (1 ft. -8 in.) above the finished grade to the depth of the shallowest water bearing forrnation to be developed. The space between the casing and drill hole shall be completely sealed by using cementitious grout under pressure. Allow sufficient time for cement to properly set before cement plug is drilled. # b. After cement has set, underream with positive hydraulically operating expanding underreamer in continuous operation of water bearing formations which are to be used in completed well. Size of underreams shall be recommended by the Contractor and requires ESSO's approval. Hole which extends into impervious stratum underlying lower water bearing sand shall be 100 mm (4 inches) larger than outside diameter of screen and blank pipe. Set screen to coincide with and conformn in length to the thickness of water bearing formations as determined by electric log. The well design shall ensure that the screen section is always fully submerged and that fluctuations in the elevation of the water level in the saturated zone have been taken into account. c. For water bearing sand formations a gravel wall filter is required. After screen and blank pipe are set in hole, fill annular space around outside of screen and blank pipe and inside of underreamed hole with well graded gravel. Convey gravel from hydrautic graveling machine to the point of deposit at the bottom of the well through graveling tube. As annular space on outside of screen and blank pipe are filled, gradually raise graveling tube to maintain bottom of graveling tube near point of deposit at all times. Deposit gravel to within 3 meters (or 10 ft.) from top of blank pipe. Well Development 3.5 Following installation of the well, Contractor shall set test pump and conduct a continuous pumping test for a period of not less than 36 hours to establish well capacity, draw down, and recovery level for pump installation. J'.06864000 CPMTRWOR1PROCW085PE1XPORTEPUAPSTASSPECS\EYO\1I -1 0-1 .OC:' ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 11-10-1 WATER WELLS Page 7 of 10 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION a. All equipment and power for testing shall be furnished by the Contractor. Equipment shall include a test pump with a capacity of 1.5 times the guaranteed yield, orifice meter for measuring quantity of water, air line and certified gauges calibrated in meters of water. ESSO shall be a advised of all testing. b. Should the test of the well indicate that the yield is below the minimum gallons per minute required, Contractor shall immediately take such steps that may be necessary to reconstruct or recondition the well to attain the required capacity yield. Well Cleaning 3.6 After well development, contractor shall clean each well. To clean up the wells, tubing is run past the bottom of the screens and compressed air is pumped down the tubing. As the air returns up the annulus, it lifts the water and any small debris that may be inside the casing. If the well does not produce satisfactorily, the casing/tubing annulus can be blocked off and the compressed air forced through the screens and up through the gravel pack to back flush same. Water can also be pumped up through the gravel to flush same. Water can also be pumped through the gravel to flush out debris. 37 Wells should be cleaned by jetting with air for several days before running the submersible pump. Jetting removes any fine sand that may get through the screens. Well Disinfection 3.8 After well has been developed and cleaned of sand and debris, Contractor shall thoroughly clean casing pipe by swabbing using alkalis, if necessary, to remove oil, grease, and lubricants. Contractor shall disinfect the well prior to use for potable water production by introduction of 50mg/liter chlorine solution into the well. The disinfectant shall be allowed to stand for 2 hours. Flushing water shall then be introduced at the bottom of the well forcing the chlorine solution out of the casing. After flushing, the well shall be pumped until there is no chlorine odor in the water. Disinfectant procedures shall comply with AWWA 654 and meet the World Health Organization Standards as per CCS 11-10-2. J :06864000%CPMT\WORDPROCJOBSPECXEXPORnPUMPSTA\SPECS\REVOI1 10-14 .DOC:vs ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 11-10-1 WATER WELLS Page 8 of 10 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION Well Testing # 3.9 Before final acceptance of the well, water tests shall be performed by an ESSO approved laboratory to ensure water is free of any unacceptable concentrations of harmful chemicals or microbiological contaminants including bacteria, viruse~, protozoa and parasites. # a. Contractor shall take one sample on five successive days after well has been chlorinated and permanent pumping equipment installed and tested, and submit it to an ESSO approved laboratory for testing. Contractor shall re-disinfect water well until bacteria free samples are obtained. # b. Contractor shall collect sufficient samples of water for chemical analysis after the well is free of chlorine residual, determine pH and free carbon dioxide at time of sample collection at the well site and make other determinations in a laboratory. The Contractor shall submit a procedure to ESSO for approval for the treatment of any unacceptable concentrations of chemicals in the well water as per CCS 11-1 0-2. Well Completion 3.10 To complete the well installation, the Contractor shall provide and install the following: a To prevent ground water contamination, at least two well seals shall be installed within the annuius- (1.) One just above the screen, and (2.) the other at the ground surface. Sealing material shall be suitable for the intended purpose and examples may be neat cement grout, dry bentonite, bentonite slurry or a mixture of a small amount of bentonite with neat cement. b. Install well pump as indicated on the drawings and in accordance with the manufacturer's instructions. If the permanent well pump cannot be installed within three days, a cap shall be welded temporarily to the top of the casing to protect the well from damage or contamination. The cap shall be removed when a permanent pump is installed. % F.o05\dC:alg,8S40001CPMWORDPROCUOBSPEC\EXPORT\PUMPSTAlSPECS%REV0t1-10-1.DOC:gh ESSO EXPLORATION & C 1 PRODUCTION CHAD INC. CCS 1140-1 WATER WELLS Page 9 of 10 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION c. Concrete sealing block shall be installed extending 1 meter (3 ft) in all directions from the main casing. The block shall be a minimum of 150 mm (6 in.) thick and shall slope away from the welihead at 20 mm per meter (1/4 in. per ft.). d. A well casing vent shall be provided with the opening screened with 16-mesh or finer stainless steel screen. The vent shall be tumed downward and elevated above the pump base so as to minimize the drawing of contaminants into the well. e. Either an electric resistance tape or a water level measuring air line shall be installed and calibrated to permit monitoring of ground water levels. f. A sampling point shall be provided at a suitable location for taking samples for water quality monitoring. g. On completion of the work on water wells and prior to design of water treatment, the following shall be reported: 1 ) Log of well drilling 2) As-built drawings of wells, well pumps and other details. 3) Final pump test results to verify capacity requirements have been met 4) Results of chemical and bacteriological tests on water samples 5) Verification of water treatment requirements originally planned 4.0 PUMP CONTROL 4.1 The system design shall incorporate the automatic operation of up to two well pumps. Each well pump shall start or stop as controlled by the storage water levels in fire water tank or potable/utility water reservoir reaching pre-determined elevation set points or by the hydropneumatic tank pressure reaching pre-determined set points. 4.2 The local pump panel (if required) shall be an IP66 enclosure. 4.3 Any additional well pumps shall be manually controlled remotely from the control room. -lFdho1O0.data1\068640ooCPMTnWOROPRO(UOBSPECEXPORT%PLMPSTAISPECSVREvo%ItI-1 .docagh ESSO EXPLORATION &CCS 11-10-1 PRODUCTION CHAD INC. WATER WELLS Page 10 of 10 TECHNICAL Rev. 0 04 Nov 96 SPECIFICATION 5.0 WELL PUMPS AND MOTORS 5.1 Multi-stage submersible well pumps shall comply with AWWA El 01. 5.2 Check valves shall be installed in pump discharge pipes. 5.3 Well pump motors shall comply with IEC in accordance with CCS 16-7-1 and CCS 16-9-1 and shall be stainless steel. 5.4 The power available will be 400 Volts, 3-phase, 50 Hz with the controls located in the station power house motor control center. 5.5 When running the submersible pump, care shall be taken to firmly secure the electric cable to the tubing. Very little slack shall be maintained when pulling the pump to be certain that the cable is coming up with the tubing. AFdhoO0\datalo6s4000CPMT\WORDPROC%JOSSPECEXPORTPUMPSTA\SPECS\WV 1-10-1 .dgh ESSO EXPLORATION & . 1 PRODUCTIQN CHAD INC. POTABLE WATER TEATMENT,1-10-2 STORAGE AND DISTRIBUTION TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION CHAD DEVELOPMENT PROJECT TECHNICAL SPECIFICATION Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By O09l9 14 -t 9IFP Issue %NFdhc45\data 11586000CPMl\WOROPRO CUOSSPECXPORTIPUMPSTA\SPECS'REVO1 1 -102Adoc=GH ESSO EXPLORATION & PRODUCTION CHAD INC. POTABLE WATER TREATMENT, CCS 11-10-2 STORAGE AND DISTRIBUTION Page 2 of 14 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION TABLE OF CONTENTS 1.0 SCOPE .3.....................3 2.0 SUMMARY OF ADDMONAL REQUIREMENTS ..........................................3 3.0 SYSTEM DESIGN ....................4 4.0 WATER TREATMENT .....................5 5.0 TREATED WATER STORAGE TANK .6 6.0 WATER PRESSURE TANK ..........................................;.7 7.0 POTABLEIUTILtTY WATER DISTRIBUTION PUMPS .8 8.0 POTABLE WATER DISTRIBUTION SYSTEM .................................... . .9 9.0 VALVES ........ 11 LIST OF TABLES AND FIGURES TABLE I ........3 TABLE 2 .....12............................ 12 XNFdho5%datal\0686400MCpmT\voRDPROCUO8SPECXEXPORTUMPSTA~SPECSulEvott 10-12.DOC:GH ESSO EXPLORATION & PRODUCTION CHAD INC. POTABLE WATER TR TMEN, CCS 11-10-2 STORAGE AND DISTRIBUTION g TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION 1.0 SCOPE 1.1 This Specification covers the functional requirements for the potable/utility water treatment, storage and distribution systems. 1.2 A pound sign (#) indicates that ESSO review/approval is required before design and/or construction is finalized or equipment is purchased. 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS 2.1 Table 1 lists the codes, standards and specifications which shall be used with this Specification. TABLE I SPECIFICATIONS CCs 3-7-1 Piping Flexibility and Supports 3-7-3 Thrust Blocks for Underground Cast Iron and Non-Metallic Pressure Pipe 3-12-1 Valve Selection Criteria 3-19-1 Piping Erection, Testing, Flushing and Cleaning 3-30-9 Specification for Piping Material Selection 4-9-1 Site Preparation and Earthwork 4-10-1 Concrete Design and Construction 11-10-1 Water Wells 15-0-100 General Instrument Specification 16-7-1 Motor Applications 16-9-1 AC Motors 16-101-1 Electrical Requirements for Packaged Mechanical Equipment 19-5-1 Cathodic Protection 19-1-10 Specification for Painting Aboveground Facilities CODES AND STANDARDS ASME Section VilI, Div. 1 Boiler and Pressure Vessel Code, Pressure Vessels B16.1 Cast Iron Pipe flanges and Flanged Fittings ASTM A 53 Pipe, Steel, Black and Hot Dipped, Zinc Coated, Welded and Seamless 888 (B88M) Seamless Copper Water Tube (METRIC) C 33 Concrete Aggregate C 94 Ready Mix Concrete D 2774 Underground Installation of Thermoplastic Pressure Piping ACI 301 Specifications for Structural Concrete 318 Building Code Requirements for Reinforced Concrete \\f 0hdabalXo4C PROCUOSSPECPORPUMPSTA3PECa1 1-10-2.dc:GH ESSO EXPLORATION & PRODUCTION CHAD INC. POTABLE WATER TREATMENT, CCS 11 -1 0-2 STORAGE AND DISTRIBUTION Page 4 of 14 TECHNICAL Rev. 0 07 Nov 96 SPECiFICATION TABLE I (Cont'd) AWWA 8300 Hypochionites C200 Steel Waterptpe - 150 mm and larger C504 Butterfly Valves C508 Check Valves C509 Resilient Seated Gate Valve C651 Disinfection of Water Mains C652 Disinfection of Water Storage Facilities C653 Disinfection of Water Treatment Faclities C000 Water Service Pipe (Type K, Soft Copper Pipes) C900 PVC Pipe Sizes 100 mm to 300 mm C907 PVC Pressure Fitings for Water C950 Fiberglass Pressure Pipe D100 Welded Steel Tanks for Water Storage E101 Vertical Turbine Pumps - Line Shaft and Submersible Types PUBUCATIONS World Health Organization (1993) Guidelines for Drnnking-Water Quality, 2nd Edition, Volume 1. Recommendations. Geneva, Switzerand Standard Methods for the Examinaton of Water and Wastewater, Mary Ann H. Franson, Editor, American Public Health Association, 19th Edifion, 1995. 3.0 SYSTEM DESIGN 3.1 The components of the water supply system shall include, but not be limited to: a. Water supply lines from source wells to storage tank. b. A shelter for distribution pumps, water treatment, associated equipment and piping. c. Water storage tank. d. Water treatment equipment to provide the level of treatment necessary to comply with World Health Organization (WHO) Guidelines for Drinking- Water Quality, local regulations and the requirements of this specification, whichever is stricter. WHO Drinking-Water Quality Standards are listed in Table 2. e. Underground water distribution mains and branch service lines f. For very small systems, a precharged hydropneumatic tank and retention tank. 3.2 The water distribution system layout shall incorporate the following: a. The piping layout shall be looped wherever possible. b. Valves shall be provided as follows: %\Fdhata1 \06854o0CPMT\WORDPROCUOBS PEC£>PORT\PUMPSTASSPECS\REWt11-1 G2-do:GH ESSO EXPLORATION & PRODUCTON CHAD INC. POTABLE WATER TREATMENT, CCS 11-10-2 STORAGE AND DISTRIBUTION Page 5 of 14 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION 1. On all branch service lines 2. On the mains at intervals sufficient to minimize disrupfion of service to consumers in the event of maintenance shut downs or breaks in the mains. 3.3 Potable/utii'ty water mains shall be installed in a common trench with the fire water mains wherever feasible. 3.4 The mains and branch services lines shall have a minimum of Im (3 ft.) of earth cover. The structural design of the mains shall be based on addiftional live loads at all road crossings and other areas where heavy vehicles may cross them. 3.5 Potable water system flow and pressure requirements in addition to process requirements, shall be as follows: a Community residents per capita consumption: 360 I/d (95 gpd) b. Administration personnel per capita consumption: 76 l/d (20 gpd) c. Plant workers per capita consumption: 114 Ud (30 gpd) d. Operating pressure range during peak hour demand: 350 - 550 kPag (50 - 80 psig) 3.6 The control panels, motors, and grounding shall be in accordance with Specification CCS 16-101-1. 4.0 WATER TREATMENT 4.1 Based on preliminary information, the proposed water treatment shall consist only of chlorination and pH adjustment. Additional treatment such as sedimentation, coagulation-flocculation, filtration, aeration and ion exchange process shall be provided by the Contractor, if necessary, to maintain the minimum drinking water standards as specified in this specification, local regulations, and WHO Guidelines for- Drnking-Water Quality, whichever are stricter. #42 Chlorination shall be done using a hypochlorinator which utilizes Calcium Hypochlorite in powder or tablets. Proposals to use altemative methods of chlorination such as gas feed chlorinators shall be submitted to ESSO for approval. 4.3 The water treatment unit shall consist, as a minimum, of a complete chlorination system with automatic controls for disinfection in accordance with AWWA C653. Disinfection shall include a booster pump, metering pump, hypoclilorinator, regulators, water flow meter, analyzer chloromatic valve, and controller instrumentation to automate the rate of chlorine injection. For pH adjustment, if necessary, provide pH analyzer and controller instrumentation to automate the dosage of additional agents for pH control. A%Fdho-0\datal \686400(OCPMTDRDPROCUOBSPEC%EXPORT UMPSTASSPECSIREVO%I 1-10-2.docGH ESSO EXPLORATION & PRODUCTION CHAD INC. POTABLE WATER REATMENT, CCS 11-10-2 STORAGE AND DISTRIBUTION Page 6 of 14 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION 4.4 Chlorine shall be injected at a point which will provide a minimum contact time of 20 minutes to produce a free chlorine residual of 0.5 mg/l. 4.5 The treatment unit shall have dry contacts available for remote monitoring and alarms as specified on the data sheets. Parameters shall be covered within the unit system with an alarm and a shutdown. 4.6 Two chlorine booster pumps shall be provided (one operating, one standby). 4.7 Lab equipment for standard water analysis shall be supplied as required by the applicable AWWA standards. Methods of analysis shall be as in Standard Methods for the Examination of Water and Wastewater (1995). 5.0 TREATED WATER STORAGE TANK 5.1 A tank shall be used to store potable water. As a minimum, it shall be sized to hold a volume equal to the sum of the following: a. Four hours of maximum daily flow for flow balancing. b. Six hours of mean daily flow for emergency water. c. One hour of mean daily flow for utility water. 5.2 Materials for tank construction shall be as follows: a. Tank shall consist of steel plate construction with welded seams in compliance with AWWA DIOO. The tank shall include 750mm (30 in.) cleanout manway, 750mm (30 in.) roof hatch with hasp and padlock, inside ladder, outside ladder, screened vent, overflow piping, drain, inlet and outlet flanges, and a liquid level indicator. b. Tank padding shall consist of asphalt impregnated fiberglass or oxidized asphalts, fiberglass, and selected mineral or organic fillers bonded together to form sheets. Material shall be dry, firm, non-tacky, and resistant to mild acids and alkalines. 5.3 Installation, Testing and Disinfection Tank installation, testing and disinfection shall meet the following requirements: a. Concrete foundafion shall be constructed in accordance with CCS 4-10-1. b. Place tank padding on top of compacted sand and concrete foundation and erect steel tank. t \dho4-.datal O68640d:CPMGnWORDPROCdJGSPEC\H°PORT\PUMPSTAkSPECS%REVDI 1-10-2.doc:GH ESSO EXPLORATiON & PRODUCTION CHAD INC. POTABLE WATER TREATMENT, CCS 11-10-2 STORAGE AND DISTRIBUTION Page 7 of 14 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION c. Painting of interior and exterior tank shall be in accordance with CCS 19-1-10. Allow a minimum of seven days following application of final coat on interior before tank is flushed, sterlized or filled. d. After tank has been erected and valves and piping installed, contractor shall test the tank for leakage, for a period of not less than 24 hours, by filling mwth water to maximum working water level. Leaks which are disclosed in the test shall be corrected and the test repeated until test results are satisfactory. #e. Contractor shall waterproof and thoroughly disinfect the ground storage tank and connecting lines with 50mgI chlorine solution before placing in operation in accordance with AWWA C652. Valves in water lines being disinfected shall be opened and closed several times during the contact period. Following a contact period of 24 hours, heavily chlorinated water shall be flushed from the system with clean water. Disinfectant procedures require ESSO's approval. f. After refilling tank with potable water having chlorine content of not more than Img/I, take samples and submit for bacteriological testing. If samples are not free from coliform organisms repeat disinfection until tests comply with local regulations, WHO Guidelines for Drinking-Water Quality, and the requirements of this specification. 6.0 WATER PRESSURE TANK 6.1 General Hydro-pneumatic tanks shall be used to control the cycling of pumps and to control pressure variations in the distribution system. Water is stored under pressure in the tanks and as a draw is made on the distribution system and pressure starts to drop, water flows from the tank into the systems to maintain pressure. 6.2 Materials Materials for tank construction shall be as follows: a. Tank shall consist of steel plate construction with welded seams. prefabricated to include a manway, inlet/outlet flanges, relief and other valves, drain, gauge, sight glass and guard. b. Tank shall be designed, fabricated and tested in compliance with ASME Pressure Vessel Code, Section Vill, Division 1 (unfired pressure vessels). Design pressure shall be 689 kPag (100 psig) working pressure and sealed tank test pressure shall be 1034 kPag (150 psig). Painting the inferior and exterior of the tank shall be in accordance with CCS 19-1-10. c. Tank shall have a flexible membrane between the air and the water, suitable for use with potable water systems. \dho.OSdata1086400(ACPMnWORDPROClOBSPEaEXPORTEPUMPSTAy;PECS%REVO\1 -10-2Acc:6H ESSO EXPLORATION& C PRODUCTION CHAD INC- POTABLE WATER TREATMENT, CCS 11-2 STORAGE AND DISTRIBUTION Page 8 of 14 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION 6.3 Controls Controls shall include combination pressure tank control for operating pumps and compressor to accurately and automatically maintain correct air to water ratio in tank. Control shall include independent and adjustable pressure sensor for each pump start point and another for air control. Each pressure sensor set point shall be easily adjustable and consist of independent bellows which operate dustproof glass hermetically sealed snap acting switches and have a pressure range of 1034 kPag (150 psig). 6.4 Installation, Testing and Disinfection Tank installation and testing shall meet the following requirements: a. Concrete foundation shall be constructed in accordance with CCS 4-10-1. b. Erect tank on level foundation, connect valves and piping. c. After tank has been erected and valves and piping installed, and before field painting is begun, subject valves and piping to hydrostatic pressure test in accordance with CCS 3-19-1 and CCS 3-30-9. d. Replace defective material disclosed by pressure test with sound material and repeat test until tank operation is satisfactory. Test tank in accordance with AWWA D100. e. Disinfect pressure tank and connecting lines with 50 mg/I chlorine solution in accordance with AWWA C652 before placing in operation. f. Following contact period of not less than 24 hours, flush heavily chlorinated water from system with clean water until residual chlorine content is not greater than 1mg/i. 7.0 POTABLEIUTILITY WATER DISTRIBUTION PUMPS 7.1 Minimum number of pumps shall be two; one duty pump and one spare. The pumps shall be electric motor driven, automatically controlled by system demands and pressures or by remote control and be capable of satisfying the peak hour water demand. The pump system shall be pressure controlled based on the pressure downstream of the pumps. Check valves shall be provided downstream of the distribution pumps to prevent backfRow. tsfdho-o5\datams6B4omcpMlWvoRopFocuoaspeEXO£RT%PUmPSTAspEcSt1 1-lOsZdoc:GH ESSO EXPLORATION & PRODUCTION CHAD INC. POTABLE WATER TREATMENT, CCS 11-10-2 STORAGE AND DISTRIBUTION Page TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION 7.2 The smallest pump shall be designed to function as a 'jockey pump.' This jockey pump shall maintain system pressure durirng low demand conditions with excess pressure relieved back into the storage reservoir. 7.3 The vertical turbine pumps shall comply with AWWA EIOI. 7.4 Pump motors shall comply with CCS 16-7-1 and CCS 16-9-1. 7.5 The power available will be 400 Volts, 50 Hz, 3 phase for motor duties up to 150 kW, with the contactors located in the station powerhouse motor control center. 8.0 POTABLE WATER DISTRIBUTION SYSTEM 8.1 General Provisions for this Section apply to a potable water distribution system. Comply with pipe manufacturer installation instructions, manuals, and printed recommendations. 8.2 Piping Material Piping material shall be in accordance with CCS 3-30-9 and shall be as follows: a. Galvanized steel pipe, shall be protected against extemal corrosion using single coat/single wrap or double coat/double wrap protective coating system. Cathodic protection shall be provided in accordance with CCS 19- 5-1. b. PVC pipe shall not be used in areas where the ground may become contaminated with hydrocarbons in the future. 8.3 Piping Installation Underground installation and testing by the Contractor shall meet the following requirements: a. Excavate pipe trench to the depth indicated on the construction drawings and in accordance with CCS 4-9-1. Provide trench bedding as indicated on the drawings and in accordance with CCS 4-9-1. Install Polyvinyl Chloride (PVC) Pipe in compliance with ASTM D2774. Install gaskets and necessary lubricants. b. Keep pipe clean during laying operations by plugging or other reviewed method. Do not lay pipe when it is raining or when trench is muddy, soft, or contains standing water. \F dho.0Mata84CPMRWORDPROCSPEPORT\PUMPSTANSPECRE-Vl2.GH ESSO EXPLORATION & CCS 11-10-2 PRODUCTtON CHAD INC. POTABLE WATER TREATMENT, Pag 10-of-1 STORAGE AND DISTRIBUTION Page 10 of 14 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION c. Full length of each section of pipe shall rest solidly on bedding material with recesses excavated to accommodate bells and joints. Close open ends of pipe of fittings when work is not in progress so that trench water, earth, or substances will not enter pipe. Replace sections of pipe found to be defective, before or after laying, with sound pipe. d. Do not lay water pipe closer than 3 meters horizontally from sanitary sewer in parallel installations. Do not locate joints at cross-overs closer to sanitary sewer than 3 meters (9 ft.) from cross-over point. In either case, water pipe shall be above the elevation of adjacent sewer. Install concrete thrust blocking at bends and tees and at ends of lines to provide adequale reaction support. Place blocks so that joints will be accessible for inspection and repair. e. Set buried valves plumb and center on valve boxes. Where feasible, locate valves outside area of roads. Tighten stuffing boxes and test each valve in both the opened and closed position to ensure that parts are in working condition. 8.4 Pressure Testing a. Subject newly laid piping or valved section to hydrostatic pressure of 455 kPag (66 psig) for one hour. Make test after pipe is laid, joints completed but exposed for examination, and trench partially backfilled. b. Carefully examine exposed pipe, joints, fittings, and/or valves during pressure test. Tighten or remake joints showing visible leakage. Replace and re-test cracked or defective pipe, fittings and valves. 8.5 Disinfection System disinfection shall be performed as follows: #a. After testing, disinfect entire distribution systems with 50mg/i chlorine solution in compliance with WHO requirements. Isolate a maximum area of 300 meters (or 1000 ft.) of piping from the rest of the system for disinfection. Thoroughly flush lines before introducing chlorine solution. Disinfectant procedures shall be in accordance with AWWA C651 and require ESSO's approval. b. After a contact period of not less than 24 hours, flush system with clean water until residual chlorine content is not greater than 1 . -1 .A2nn.rDMOnCVRSPRO5. IOR.CPF C\F XPORT\P1JMPSTA%PEC&RFvCi110-2.DCC:VS ESSO EXPLORATION & _ _ PRODUCTION CHAD INC. POTABLE WATER TREATMENTP CCS 11-10-2 STORAGE AND DISTRIBUTION Page 11 of 14 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION mg/i. Open and close all valves in lines being sterilized several times during contact period. c. Collect samples for bacteriological analysis to check efficiency of disinfection procedures. Take minimum on one sample for each 300 meters (or 1000 ft.) of completed water main. Repeat disinfection process and sample collection if tests show that contamination persists. 9.0 VALVES General 9.1 Valves shall be resilient seated gate valves, and shall conform to AWWA C509 standard. The exterior of the valve shall be factory coated. They shall be standard iron body, resilient rubber seated rings, modified solid disc with non-rising stem. 9.2 In-ground valves shall be located in a valve box accessible to the operator for operation and maintenance. Pressure Reducing Valves 9.3 Pressure reducing valves shall maintain a constant downstream pressure regardless of varying inlet pressure. Pressure reducing valves shaDl be standard iron body, hydraulically operated, diaphragm actuated, globe valves with stainless steel trim seats, extemal posifion indicator, Class 125 ANSI 816.1 flanges with 6 mm pet cocks on the inlet and outlet side of the valve. The pilot control system shall have an extemal strainer and direct acting, spring loaded, normally open diaphragm valve. Check Valves 9.4 All check valves shall conform to AWWA C508 and CCS 3-30-9 and shall be iron- body bronze mounted swing check valves complete with outside lever and weight. % -1dhoOSata1to640CPMlRWORDPROCUOBSPECEXORrEPUMPSTAISPECS%REVokI 1-10-2.docGH ESSO EXPLORATiON & PRODUCTION CHAD INC. POAL AE RAMN,CCS 11-10-2 STORAGE AND DISTRIBUTIONPae1of4 TECHNICAL Rev.O0 07 Nov 96 SPECIFICATION TABLE 2 World Health Organfizafion Guidelines for Drinking Water Quality Paramietefs Design Standard Turbidity 5 NTU Note - (a) (b) Color 15 time color units Note - (b) Odor Inoffensive odor 3 T.O.N. pH 6.5-8.5 ChiorInes 5 rng/L, 0.6 - 1 mgIL Nt b Monochloramine __ _ _ __ _ _ _ __ _ _ _ __ _ _ __ _ _ _ __ _ _ _ Total Dissolved Solids 10 gLNt b Total Colifoffm ___per _ ___ _____ml__Note___ -____c_ Selenium .1ml Hydrogen Sulfide (H2S) 00 gLNt b inorganics Nitrates _ ___ __ __ __ __N__ __ __ __ 50 mg/L Nitrites (NO2) ~~~~~3 mgIL Ammonium (NH4) ~~~1.5 mgIL Note - (b) Sulphates (SO4) ~~~250 mg/L Note - (b) Sodium (Na) ~~~~~200 mg/L Note - (b) Aluminum (Al Total) 0.2 mgIL Note - (b) Cyanides (CN) ~~~~~0.01 mg/L Chromium (total) ~~~~0.003 mg/I Iron (Fe) ~~~~~~~0.5 mg/I, . m Note - (b) Nickel (Ni) _ __ __ __ __ __ __ _ 0.00 mg/L Copper (___u __2__mg/L___I_mg__L_Note0.7 mg/ Arsenic (As)_ ___ __ __ __ __ __ 0.01 mrg/L Cantiumon (Sb) 0.005 mg/L Boronr (Bg) 0.30 mg/I Baimolbeu (Mo) 0.07 mg/I Leadz(Pe 0.01 mig/L AntimoylbeSbe 0.30 mnglL, -0 gLNt b Tolybenem(M)0.07 mg/I,2-7LgLNt b Xylene 0.5 mg/L, 20-1800 sig/L Note - (b) Styrene 20 pg/I, 4-2600 jig/L Note - (b) Benzo(a]pyrene 0.7 lggIL Chlorinated Alkanes _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Carbon Tetrachloride 2 pgJL Dichloromethane 20 pg/I 1,2 - Dichloroethane 30 l±gIL 1,1.1 - Trichloroeth-ane 2000 iLglL %Xdo)k-aV660CMn%ODRCUSp=\xoTpMsAs.CVMM i-1G.2.doaGH ESSO EXPLORATION & PRODUCTION CHAD INC. POTABLE WATER TREATME110-2 STORAGE AND DISTRIBUTION Page 13 of 14 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION TABLE 2 (Cont'd) World Heaflth Organization Guidelines for Drinking Water Quality Parameters Design Standard Chlorinated Ethenes Vinyl Chloride 5 pigiL 1,1 - Dichloroethene 30 1ig/L 1,2 - Dichloroethene 50 I/L Trichloroethene 70 gg/L Tetrachloroethane 40 j.gIL Chlorinated Benzenes Monochlorobenzene 300 i±g/L, 10 - 120 gg/L Note - (b) 1,2 - Dichlorobenzene 1000 Ag/L, 1 -10 gg/L Note - (b) 1,4 - Dichlorobenzene 300 pg/L. 0.3 - 30 gg/L Note - (b) Trichlorobenzenes (Total) 20;ig/L 5 - 50 pig/L Note - (b) Disinfectant By-Products Bromate 25 xgIL Chlorite 200 i1g/L 2-Chlorophenol 0.1 -10;igIL Note -(b) 2,4-Dichlorophenol 0.3-40 pgIL Note - (b) 2,4,6 - Trichlorophenol 200 ug/L, 2-300 iggIL Note - (b) Formaldehyde 900 prg/L Bromoforfm 100 IrgJL Dibromochloromethane 100 pig/L Bromodichloromethane 60 pgIL Chloroform 200 tig/L Dichloroacetic Acid 50 pg/L Trichloroacetic Acid 100 gg/L Chloral Hydrate (Trichloroacetaldehyde) 10 lg/L Pesticides Alachlor 20 lig/L Aldicarb 10 l.g/L Aldrin/Dieldrin 0.03 ggIL Atrazine 2 pg/L Bentazone 30 jgIL Carbofuran 5 j.g/L Chlordane 02 lig/L Chlorotoluron 30 tg/L DDT 2 jig/L 1.2-Dibromo-3-Chloropropane 1 tig/L 2,4-D 30 gg/L 1.2-Dichioropropane 20 lzg/L 1,3-Dichloropropene 20 vg/L Heptachlor and Heptachlor 0.03 jlg/L Hexachlorobenzene 1 pg/L Isoproturon 9 ±g/L Pesticides (Cont'd) Lindane 2 plgIL MCPA 2 ig/L -Fdhi.sataOU3864000\CPMT\WORDPROCVOBS PECXPORTOPUMPSTA-SPECSWRVO111 -2.docGH ESSO EXPLORATION & 0 PRODUCTION CHAD INC. POTABLE WATER TREATMENT, Page 14 of 14 STORAGE AND DISTRIBUTION TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION TABLE 2 (Cont'd) World Health Organization Guiderines for Drinking Water Quality Parametems Design Standard Methoxychlor 20 lg/L Metolachlor 10 tg/L Molinate 6 Sig/L Pendimethalin 20 j.igAL Pentachlorophenol 9 pg/L Permethrin 20 tigfL Propanil 20 pg/L Pyridate 100 jigIL Simazine 2 ,ug/L Trifluralin 20 ItgfL Chlorophenoxy Herbicides Other than 2,4-D and 90 1.g/L MCPA 2,4-DB Dichlorprop 100 jg/L Fenoprop 9 jg/L Mecoprop 10 lig/L 2.4,5-T 9 ILgIL Miscellaneous iDi(2-ethlhexyl)adipate 80 jLgIL Di(2-ethylhexy)phthalate 8 jig/L Acrylamide 0.5 piglL Epichlorohydrin 0-4 lig/L Hexachlorobutadiene 0.6 jig/L Edetic Acid (EDTA) 200 pg/L Nitrilotriacetic Acid 200 tig/L Trhbutyltin Oxides 2 jigIL Notes: a. NTU = Nephelometric Turbicdty Units b. The range given (or second value listed) shows preferred aesthetically-based values c. No more than 5% of the samples per month may be positive. If less than 90 samples, no more than one can be positive. %Wdho4O\aal1 8400CACPMl\WORDPROCJOBSPEC\E)PORIlPUMPSTAlSPECS\EVOtr _O-2.doe:GH ESSO EXPLORATION & 11 PRODUCTION CHAD INC. PACKAGED SEWAGE TREATMENT CCS 11-1131 SYSTEM TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION CHAD DEVELOPMENT PROJECT TECHNICAL SPECIFICATION Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By 0 7 a 14 13 H IFPlssue .\Fdho05cdata:068640:GHCPMRWORDPROCUOBSPECXEXPORT\PUMPSTAVSfECS\REVOXl1-11-l.doc.GH ESSO EXPLORATION & PRODUCTION CHAD INC. PACKAGED SEWAGE TREATMENT CCS 11-112 1 SYSTEM Pg f1 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION TABLE OF CONTENTS 1.0 SCOPE ..................................... 2 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS ......................................3 3.0 STRUCTURAL .4 4.0 CORROSION PROTECTION .5 5.0 ELECTRICAL SYSTEM .5 6.0 MECHANICAL .5 7.0 PIPING .6 8.0 INSTRUMENTATION .............................. 6 9.0 UNIT PROCESSES .7 10.0 UNIT PROCESS SPECIFICATIONS .7 11.0 NOSE .11 12.0 START-UP AND OPERATING INSTRUCTIONS 11 LIST OF TABLES TABLE I ........4 TABLE 2 .10 atalo6864cPMTWORDPROCUO8SPEC\EXPORrPUMPSTAISPECMEVtA -11-1.docGh ESSO EXPLORATION & C PRODUCTION CHAD INC. PACKAGED SEWAGE TREATMENT Pag 11-1-1 SYSTEM Pg f1 TECHNICAL . Rev. 0 07 Nov 96 SPECIFICATION 1.0 SCOPE 1.1 This Specification covers the design and manufacture of a factory built, skid mounted, transportable, sewage treatment unit(s) which will be used for the treatment of sanitary waste from operations camps and facilities in Chad and Cameroon, Africa. Skid mounted components may be designed for modular assembly and installation. The treatment plant shall be prefabricated in the factory of the supplier and shall be shipped complete with all equipment specified herein. 1-2 Not included in this specification are the upstream sewer piping and fift station and downstream discharge piping. 1.3 A pound sign (#) indicates that ESSO review/approval is required before design and/or construction is finalized or equipment is purchased. #1.4 Altemative designs and specifications are encouraged as long as the design or specification is equivalent to the requirements specified. Altemative designs and specifications require ESSO's approval. 1.5 The treatment system shall be suitable for outdoor installation in a tropical climate and shall be of a design with proven operability and durability in environmental conditions equal to or more severe than the design operating conditions. 1.6 Data sheets are supplied with this specification. 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS 2.1 Table 1 lists the codes, specifications, standards and publications which shall be used with this Specification. lFdho-9.atal G6864000\CPMT\WORDPROC-ZOSSPECEXPORTGPUMPSTAHSPECSREVOE11-I 1-l.docGH ESSO EXPLORATION & PRODUCTION CHAD INC. PACKAGED SEWAGE TREATMENT Pag 11-11-1 __ SYSTEM Page 4 of 13 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION TABLE I SPECIFICATIONS CCs 2-1-1 Equipment Noise Level Data Requirements 4-1-2 Structural Steel Design, Fabrication and Erection 4-2-1 Design Loads for Structures 9-4-201 Production Tanks, Nominal Capacities Below 2,000 bbl. 10-19-1 Packaged Equipment 15-1-5 Packaged Equipment Instrumentation 16-3-1 Wiring Methods and Material Selection 16-9-1 AC Motors 16-101-1 Electrical Requirements for Packaged Mechanical Equipment 20-1-1 Inspection of Equipment and Materials CODES AND STANDARDS SSPC SP 6 Surface Preparation Specification No. 6 Commercial Blast Cleaning SP 10 Surface Preparation Specification No. 10 Near-VWite Blast Cleaning AISC M016 Manual of Steel Construction Allowable Stress Design AWS D1.1 Structural Welding Code Steel ASCE 7 Minimum Design Loads for Buildings and Other Structures ASME Section Vill, Div. I Boiler and Pressure Vessel Code B 16.5 Pipe Flanges and Flanged Fittings B 1.20.1 Pipe Threads, General Purpose OSHA 29 CFR Part 1926 AGMA 390.03 Gear Classification 3.0 STRUCTURAL Design of non-pressure parts shall be based on the guidelines from the AISC Steel Construction Manual, and CCS 4-1-2. The treatment Plant shall be built of 6-mm (114 in.) minimum thickness structural. grade A36 steel plate and shall be designed to withstand normal hydrostatic pressures. All welded structural members shall be in accordance with AWS D1 .1, structural welding code using E-70XX electrodes. Welds shall be continuous inside and out where required for structural strength or water \fdho05%data1 06864OOOCPN.MVWORD PROCWOBSPEFORTvPUMPSTAEP 11- 1-1.ocGH ESSO EXPLORATiON &.-. PRODUCTION CHAD INC. PACKAGED SEWAGE TREATMENT CCS 11-11-1 SYSTEM Page 5 of 13 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION tightness. Attachment welds shall be of the same specification, grade and heat treatment condifion as the plate material used to fabricate the major components. The structural components shall be joined by welding as described above and shall meet AISC and AWS welded joint requirements. The treatment plant shall be hydrostatically tested per goveming code. The hydrostatic test shall be performed prior to external coating, with chlorine controlled water (50 ppm max.) where stainless steel is in contact with the testing medium. 4.0 CORROSION PROTECTION Surfaces immersed in water shall be prepared in accordance with SSPC SP-10 and other surfaces shall be per SSPC SP-6. Prepared surfaces shall be primed with a 75 gm (3 mil) coat of Carbozinc 11 primer and a 75 gm (3 mil) coat of Carboline finish coat. Painting shall be in accordance with CCS 19-1-10. 6.0 ELECTRICAL SYSTEM The treatment plant shall be completely prewired at the supplier's factory and shall be in accordance with IEC Standards and meet the requirements of spec1fication CCS .16- 101-1 (Electrical Requirements for Packaged Mechanical Equipment). Electrical enclosures shall be IP66. Motors shall be provided with 1.15 service factor, shall be TEFC, and shall be in accordance with CCS1 6-9-1. 6.0 MECHANICAL Pumps shall be suitable for use in sewage application. Selection of the pump shall be based on its intended service (recessed impeller, diaphragm, metering, etc.) Motor drivers shall be suitable for the area classification. The motors shall be designed per IEC standards. Motors shall be standard sizes and readily available. Vessels shall be sized for the volume or holding time required for the proper operation of the system. Materials shall be compatible with sanitary sewage. Construction shalt be industry standard. Supplier's standard materials are acceptable; as long as Supplier shall fumish material equal to or better than the material specified herein. Mechanical drives shall be gear reduction type with gears that conform to AGMA gear classification for continuous duty. Drives shall be enclosed in suitable housings with seals between the rotating and fixed components to prevent oil leakage. 11Fdho15datal 86400\CpMlnWORDPROCUOSSPEC.EXPORT PUMPSTA SPECSUREV0\11-11-1.doc:GH ESSO EXPLORATION & PRODUCTION CHAO INC. PACKAGED SEWAGE TREATMENT Pag 6 of13 SYSTEM Page 6 of 13 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION Torque ratings for the drive shall be based on standard design criteria accepted and used in the gear industry and shall be limited by the strength or surface durability, whichever is least. Machinery shall operate under all conditions without excessive vibration. All grease fittings, oil fill, and drain points shall be extended for easy access and service form walkway or operating plafform without raising floor plates. 7.0 PIPING Piping shall be arranged so that no liquid pockets or vapor traps are installed. Block valves shall be provided to isolate principal skid termination points for inspection and maintenance. Flanged connections shall be provided for the skid baftery limit. Butterfly valves shall not be used where positive shut-off is required. Piping and fittings shall be located in the confines of the skid and supported in such a way as to avoid unacceptable vibration, stresses or loads on equipment. Sufficient 19 mm (3/4 inch) vents and drains with corrosion resistant plugs shall be provided for hydrostatic testing and purging prior to start-up. Sufficient 19 mm (314 inch) or larger valved vents and drains shall be provided to permit ease of start-up and shutdown. Sampling ports between processes and at the effluent discharge shall be provided. Piping shall be per supplier's standard practice and this specification. Pipe connections 50 mm (2 in.) and larger shall be flanged. Flanges shall be in accordance with ASME B 16.5. Flange bolt holes shall straddle natural centerline. Two bolt pipe flanges shall not be used. Cast iron piping materials shall not be used. Unless otherwise specified, minimum wall thickness shall be Schedule 80 for 50 mm (2 in.) nominal and smaller, Schedule 40 for 3 inches and larger. Nominal pipe sizes of 30 mm (1 114 in.), 60 mm (2 112 in.), 90 mm (3 1/2 in.), and 125 mm (5 in.)shall not be used. 8.0 INSTRUMENTATION The treatment plant control system and instrumentation shall be designed so that the plant is capable of unattended operation, except for maintenance and periodic oversight. Supplier shall provide all necessary instrumentation for operation and testing of the system. All instrumentation shall be in accordance with CCS 15-1-5 and CCS 15-0-100. All instrumentation and associated junction boxes shall be rated for IP66. UFdho.C51data1P 864000\CPMT\VORDPROCUO8SPECkEXPORTIPUMPSTA\SPECS1REVOXI 1-1 -l doc:GH ESSO EXPLORATION & PRODUCTION CHAD INC. PACKAGED SEWAGE TREATMENT CCS 11-11-1 PACKGED SEWAGESYSTEM Page 7 of 13 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION 9.0 UNIT PROCESSES The unit processes shall consist of, but not be limited to: * A coarse screen * A comminutor/grinder. * Biological activated sludge, suspended growth, complete mix unit process with contact stabilization or extended aeration * Settling basin * Sludge wasting system * Chlorine contactor 10.0 UNIT PROCESS SPECIFICATIONS 10.1 Coarse Screen The coarse screen shall have a screen opening of 19 mm (314 inch). A manual or automatic means for removing solids and cleaning the screen shall be provided. 10.2 Comminutor/Grinder The comminutor/grinder shall be designed to prevent solids larger than 6 mm (114 inch) from passing. 10.3 Biological Treatment Unit The biological treatment unit shall be the activated sludge, suspended growth process with the following design basis: * The sewage consists of liquid sanitary waste originating from the kitchen sinks, lavatories, showers, urinals and toilets. * Water Temperature is expected to vary from 1 00 C to 320 C Flow shall be based on 360 liters (95 gallons) of wastewater generated per person assigned to the camp or facility, per day. The design shall be based on a mean cell residence time of not less than 5 days. Mixed liquor volatile suspended solids (MLVSS) are 1500 mg/L and mixed liquor suspended solids (MLSS) are 1600 mg/L. N Fdho-051datalU0686400(ACPMTaWORDPROCJO8SPE1nKPORTtPUMPSTASpECStREVO%I 1-11-1 ,docGH ESSO EXPLORAllON & PRODUCTION CHAD INC. PACKAGED SEWAGE TREATMENT CCS 118o1-1 __ SYSTEM Page 8 of 13 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION V Influent BOD5 shall be 250 mgA (30 day avg.). * Cell yield coefficient Y (MLVSS/BOD5 ) equals 0.71 and the endogenous decay coefficient b (1/t) equals 0.064 days71. * Minimum air requirements are 1.1 Kg air/Kg BOD5 removed. Average dissolved oxygen (DO) concentration of 2.0 mg/L shall be maintained. Air requirements may be provided by blowerldiffuser system, mixer, induced air, or combination thereof. The air distribution system shall be designed to evenly distribute air over the entire length of the aeration tank. Air diffusers, if part of the system, shall be the fine bubble (for shallow tank), non-clog type, operational between 122 and 490 SCM/d (3 and 12 scfm) per diffuser. Each assembly shall be designed and installed such that non 'in-situ' replacement will not iMpact unit operations. 10.4 Secondary Clarification The secondary clarifier shall be based on the following design criteria: - Overflow rate shall not exceed 24 m3/m2-d * Minimum tank depth shall be 3 m. a Sludge Volume Index equals 150 * Solids loading rate shall not exceed 6 Kg/im2- hr The data noted above constitutes Clarifier Data Sheet information. The clarifier shall include, but not be limited to, the following: * Tank * Feedwell * Bottom Rake Assembly and Lifting Devices * Skimmer and Scum Trough * Drive Mechanisms and Speed Reducer Effluent Weir * Walkways and Ladders of Stairways. * Overload Alarm and Control System * Piping and Valving 1Fdho-O1\datal-1864o\CPM\ORDPROC\JO8SPEXPORT9UMPSTA\SPECS\REVO\1 1-1 .docGH ESSO EXPLORATION & PRODUCTION CHAD INC. PACKAGED SEWAGE TREATMENT CCS 11-11-1 SYSTEM Page 9 of 13 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION The Clarifier/Thickener shall be Suppliers standard design, modified as required to comply with this specification. Major equipment shall be of proven design with a minimum of 2 years of successful operaton in equal to or more severe than design operating conditions. All gears and bearings shall run in an oil bath. Drive units shall be fumished with overload protecting device(s) that shall visually indicate relative load by suitable means. When overloaded, an alarm shall be activated and the motor shall be de-energized. The loads where the alarm and motor cut-off occur shall be independently adjustable. The Clarifier/Thickener shall be fabricated, assembled, and tested at the supplier's factory to the maximum extent feasible to minimize field installation and startup time- The system shall be complete with all structural supports, controls, instrumentation, piping, wiring, and components mounted. Equipment and piping shall be arranged so that when installed, all extemal and intemal components requiring manipulation, observation, and maintenance shall be readily accessible and safe to operating and maintenance personnel. Supplier shall provide any special tools required for maintenance and servicing of the equipment. The tools shall be new and not used for construction. Provisions shall be made for the removal of bottom sludge during maintenance periods by scourng. 10.5 Sludge Wasting System Supplier shall provide a method for wasting and dewatering excess sludge from the clarifier underfiow. Water from the dewatering process shall be retumed to the biological treatment unit. Dewatered sludge will be landfilled or landspread into suitable soil. 10.6 Retum Activated Sludge (RAS) Supplier shall provide a system for retuming activated sludge from the clarifier underflow to the biological treatment unit. The system shall be capable of retuming RAS at a rate equal to 100% of the treatment unit flow rate and shall be capable of operating when tumed down to 20% of the treatment unit flow rate. 10.7 Chlorination Supplier shall provide a disinfection tank with baffles to prevent short circuiting. The chlorine tank shall have sufficient capacity for 30 minutes retention time at the average hourly design flow. The chlorinator shall consist of a compact \Fdho05datal\08640ACPMnWOROPROC\JOBSP1-C1EXPORTIPUMPSTAlSPECSGREV1t -1 .doc GH ESSO EXPLORATION & PRODUCTION CHAD INC. PACKAGED SEWAGE TREATMENT CCS 11-11-1 SYSTEM Page 10 of 13 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION chlorinator box which dispenses a predetermined, stable quantity of chlorine from a tablet form. The chlorinator shall be manufactured of high density cross- linked polyethylene or stainless steel for durability and corrosion resistance. The chlorinator shall be designed to assure good contact between the water and disinfectant tablets, and to permit the free flow of water through the unit. Chlorine shall be injected at a rate of 2-5 mg/L at a point which will provide a minimum contact time of 30 minutes prior to discharge. 10.8 Walkways The treatment plant shaff be equipped with walkways, steps, ladders and handrails meeting OSHA standards and CCS 4-2-1. The walkways, steps, ladders and handrails shall be of galvanized steel, aluminum or fiberglass construction. 10.9 Effluent Criteria Effluent shall meet World Bank effluent guidelines for onshore oil and gas development. Table 2 highlights key World Bank effluent criteria. The system shall include provisions for ensuring that effluent criteria are met during periods of system start-up and upsets. TABLE 2 World Bank Liquid Effluent Criteria' Parameter Maximum Levels pH 6-9 BOD5 50 mgIL Oil and Grease 20 mglL Heavy Metals (except Barium) 10 mg/L Pnenolic Compounds 100 mgQL Total Suspended Solids 50 mg/L Coliform Bacteria 400 MPNIIOO mL2 (MPN - Most Probable Number) Temperature - at the edge of the mixing zone Max. 5s C above ambient temperature of receiving waters - Max. 3' C if receiving waters >2VC. Source: The World Bank Environment, Health and Safety, Guidelines, Onshore Oil and Gas Development (World Bank, 1995) 1. Maximum daily discharge limits 2. Average monthly concentration (i.e., 30 consecutive days of sampling) X-Fdh1 -5.data1 \:5864000CPMTHWORDPROC\JOESPEC\EXPORTdPUMPSTAOSPECS%REW1. 1-1 .doc:GH ESSO EXPLORATION & PRODUCTION CHAD INCG PACKAGED SEWAGE TREATMENT CCS 11-l1-1 PACKAGED SEWAGSYSTEM Page 11 of 13 TECHNICAL Rev. 0 07 Nov 96 SPECIFICATION 1 0.10 Discharge Discharge of treated fluids will be to perennial surface waters or to absorptiontevaporation system. Discharge will be performed in a manner that avoids erosion. 11.0 NOISE The system noise shall not exceed 85 dBA and must be in accordance with CCS 2-1-1. 12.0 START-UP AND OPERATING INSTRUCTIONS The manufacturer shall provide detailed operating and installation instructions. A trained representative shall also be provided to perform initial plant start-up and to assist the Contractor and/or ESSO in the operation and maintenance of the plant. 13.0 IDENTIFICATION AND TAGGING Identification and Tagging shall conform to CCS 10-19-1. 14.0 INSPECTION AND TESTING Inspection and testing shall conform to CCS 20-1-1. 15.0 PERFORMANCE GUARANTEE Contractor shall guarantee that the system provided meets the requirements of the World Bank for effluent quality and functional performance of this specification. The Contractor shall immediately correct any deficiencies in the equipment or its performance. \\Fdho- 1.d2tal\0611AO.\CPMT\WOROC\OBSPECEXPORTUMPSTA\SPECS\REVMlt-t1-1 .doc.GH TAG NO Fl _ __ __ ___ _ _ _ _ _ S tE ET OtF ________ GY P#tOt £S SPECtFfCATION SltEET &IAC- - REV. GATtE ______ PACKAGE SEWAGE TREATMENT SYSTEM CLIENT SPEC. NO. CO*4TIACT_ 1 NO. Of UNITS OAF R.UOOEL NO.O 2 SERVICE MANUFACTURER 3 PROCESS DATA A PLANT CAPACITY: NORMAL GPO MAAX. G,O S PLANT INFLUENT: BOOs m4/L SUSPENOtEC SOLtOS _____ __/ 6 OTHER 7 PLANT EFFLUENT: BO0S _ _ L SUSPENOEO SOLIOS 'NIL a OTHER__ 9 TYPE OF PLANT: ACTIVATEO SLUOGE CONTACT STABILiZATION 10 EXTENOeO AERATION_ PHYSICAL-CHEMICAL 11 OTHER 12 MECHANICAL DEStGN 13 PLANT SIZE: LEtGTHt WIOT__ I4 HEIGHT_ _ _ oAMETER - 1S PLANT TO INCLUDE TtHE fOLLOWING tTEMAS. (NOTEStZEOR VOLuVtE 16 EGUALIZATION4 TANK:_ _ CLOARINE CONTACT CHAMB3ER: 17 FLOCCULATION & COAGULAT4iON:_ AERATION TANK: _ 1E CLARIIER: SLUOGE HOLOING TANK: 19 TUBE SETTLERS:_ SLUOGE THICCKENING: FRO#A _*. TO _ SOLJS 20 FILTERS: GRAVtTY_ eY: CENTRIFUGE . FLOTATION__ 21 PRESSURE ____ GRAVITY CONT. BELT FILTER_ 22 MATERIALS OF CONSTRUCTIO# 23 24 25 tLOWER(SI: NO. - CFM __- 26 POSMVE OISPL . CENTRIFUGAL 27 ttEMS T0 BE INCLUDED BY MANUFACTURER 27 C0tNTROL PANEL ACTIVATEO CARBON_ SKID MOUNT 29 FLOW TOTALUZER = SLUOGE RECtAIuLATION SCUM GAFF LE'__ 30 COtMttINUTOR AUTO.SLUDGE tt.0. AOJ. WEtR 3S eAR SCREENtY CH__ EM. FEED TANtES 32 FROTH SPRAY_ CHEW. FEEO P4UMAP & OR_ X3 OTHtER 3' 35 NWSTRUMENTATION: 36 37 MOTORS: 3a POWER AVAILABLE: VOLTS_ ,PtPHASE , 29 BLOWER(SI me -- - _VOLTS CONTROLPANEL: VOLTS 40 COmAINtu toftt tftP(... .VO LTS OTHEtR 41 SLUOGE ftECtR: HP VOLTS 42 NOZZLES: INLET: SIZE___ R ATING 43 OUTLET: StZE . RATING 44 SLUOGE tEtMOVAL: SZE . RATING 4S OTHERS: 46 OVIERATING WVEIGHT_. SSHiPPING WT. . CUBAGE _ CIJ fT. 47 MATERIALS OF CONSTfIUCTION:___ _ 49 I EPL Iokpoclr C lA N PACKCACMEI~AM cCs 11.11.1 TECH4NCALSPECW1CA?TN~ J.O8401P'WRPOUSPE~XOWMSASESRVX 1-1 1-I .doGH TAG ft__ *Y FfiOCES _ SP'EC(FCATtaot SHEET --EC A- pk LV. ~OArIE PACKAGE SEWAGE TREATMENT SYSTEM (Continued) 61 PA4WT4NG: INTERNAL. #A4*ME _ FLNS_ __ _ , OTI4EA__ 52 EXTERNAL. fRtIME_,- FtNffSFt _ _ , OTERE R 53 REfERFENCE OT"ER EBlaIPMENT StE'fCfICATION SHET 54 55 S6 Rf MtJRI5: 57 58. 59 60 SKETCH: MO wte5bORATcpROU CW OCCS 11.11.1 _ t CPACKACSeWAE f i3 ofX 11~~~~~~~~~~ 15Y1T.SOGi J:06ss4oomCPNIT\RORPROC\IJOSSPEC%EXPOR1-'MP5TA\SPECSXREVO\11-11-l doc GH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 134-1 SOLID WASTE LANDFILL Page 1 of 27 TECHNICAL Rev. 0 11 Nov 96 SPECIFICATION CHAD DEVELOPMENT PROJECT TECHNICAL SPECIFICATION Rev. Date No. of Prepared Reviewed Approved Revision Details No. Pages By By By O | ro 27 2 I X Pi IFP Issue \Fdho4data1U6864t0CPMWOPROCUOBSPECEKPORlTPUMPSTASECSEVB\13-4-1DOC:GH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 13-4-1 SOLID WASTE LANDFILL Page 2 of 27 TECHNICAL Rev.0 11 Nov 96 SPECIFICATMON TABLE OF CONTENTS 1.0 SCOPE ................................................3 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS .3 3.0 PURPOSE OF SOLID WASTE LANDFILL .4 4.0 SITE SELECTION .4 5.0 DESIGN AND CONSTRUCTION CRITERIA .5 6.0 OPERATING PROCEDURES ........................ 19 7.0 CLOSURE REQUIREMENTS .26 LIST OF TABLES TABLE I ..... 3 TABLE 2 .7 TABLE 3 .20 TABLE 4 .23 %NFdho-05\atal 0686-4000CPMlRWOFDPROCU035PEC\EPO RPUMPSTASSPECSUREVOI134-1.DOC: GH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 13 41 SOLID WASTE LANDFILL Page 3 of 27 TECHNICAL Rev. 0 11 Nov96 SPECIFICATION 1.0 SCOPE 1.1 This specification includes the technical requirements for the design, construction and operation of a landfill site to be used for both hazardous and non-hazardous solid waste disposal. The oonstruction includes earthwork, access roads, and installation of a landfill with a composite liner and leachate collection system and monitoring wells. The operation includes maintaining each landfill cell, collecting leachate and monitoring leachate and monitor-well water quality during the Pre-Operation phase. 1.2 A pound sign (#) indicates that ESSO reviewfapproval is required before design andfor construction is finalized or equipment is purchased. 1.3 An asterisk (*) indicates that additional information is required. This information is provided in other project documents or will be furnished during the detailed engineering phase. 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS 2.1 The publications listed in Table I are incorporated by reference into this specification. Except as modified by the requirements specified herein, work covered by this specification shall conform to the applicable provisions of these publications. TABLE I SPECIFICATIONS ccs 4-10-1 Concrete Design and Construction 411-1 Chain Unk Fencing 4-100-1 Roads and Area Paving 21-20-107 Soil Erosion Mitigation Specification 21-20-108 Environmental Impact Mitigation Specification GPS 008 Project Safety Requirements 011 Waste Management CODES AND STANDARDS ASTM C136 Sieve or Screen Analysis of Fine & Coarse Aggregate C478 Precast Reinforced Concrete Manhole Sections D422 Test Method for Particle - Size Analysis of Soils. D1140 Test Method for Amount of Material in Soils Finer Than the No. 200 (75jirn.) Mesh D1557 Laboratory Compaction Characteristics of Soil Using Modified Effort [56,000 ft-lbift3 (2700 kN-m/m3 )] D2216 Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock D3034 PSM Poly (Vinyl Chloride) PVC Sewer Pipe and Fittings (Perforated) D4253 Maximurn Index Density and Unit Weight of Soils Using a Vibratory Table D4254 Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density ~NF.dho0cdata1pfiJ4oo RDPROCuO8SPEXPORT%PUMPSTASPECS\EM1341 MOC:GH ESSO E=XPLORATION & PRODUCTION CHAD INC. CCS 134-1 SOLID WASTE LANDFILL Page 4 of 27 TECHNICAL Rev. 0 11 Nov 96 SPECIFICATION TABLE I {CONr'D) ASTM (cont'd) D4318 Test Meftod for Liquid Limit, Plastic Limit, and Plasticity Index of Soils D5084 Test Method for Measurement of Hydraulic Conductivity of Saturated Porous Materals Using a Flexible Wall Permeameter D5093 Standard Test Method for Field Measurement of Infiltration Rate Using a Double-Ring Infiltrometerwith a Sealed-Inner Ring. USCOE U.S. ARMY CORPS OF ENGINEERS EM 1110 2-1906 Corps of Engineers Manual Standard Methods for the Examination of Water and Wastewater Mary Ann H. Franson, editor, American Public Health Association, 1995 3.0 PURPOSE OF SOLID WASTE LANDFILL 3.1 The solid waste landfill shall be designed, constructed and operated to accept the following: a. Solid wastes approved in the Contractor's Waste Management Plan in accordance with Section 30 of the Coordination Procedures and GPS-01 1e b. All domestic and industrial solid wastes from the operating facility during its operating life cycle. c. All potentially hazardous wastes such as batteries and incinerated medical wastes generated during operations and construction. 3.2 The design, construction and operating procedures of the solid waste landfill shall recognize the existence of an incinerator at the site during the operation phase. 3.3 All landfill cells used during the pre-operations phase shall be closed prior to turning care and custody of the facility over to ESSO. 4.0 SITE SELECTION 4.1 Initial Selection Criteria The criteria for the selection of landfill sites shall be as follows: a. Avoid residential areas, wetland, critical wildlife habitats, drainage courses and areas subject to seasonal flooding. b. Sites shall not be chosen within the 100 year flood plain of a stream, river or lake. c. The landfill shall not be located within 500 m (1640 ft.) of an airfield. This restriction is imposed to reduce bird hazard. )5F I year] Inactivity (P)] l Compacted | 150 mm 300 mm [ 600 mm |Thicknessllll 6.4 Leachate Collection and Disposal The leachate sumps shall be monitored by Contractor for level of accumulated liquid and leachate quality. Sumps shall be monitored on a regular basis to easure fhat overflowing does not occur. The leachate quality shall be monitored semi-annually. The leachate shall be extracted from the sumps and disposed of by the Contractor in its sewage treatment plant. ff necessary, Contractor shall adjust leachate pH and treat to remove heavy metals and excess salts that would not be compatible with the sewage treatment design parameters and effluent quality before sending the leachate to its sewage treatment system. The leachate collection system must be properly maintained on an annual basis (or more often, as necessary). The leachate lines shall be cleaned out by the Contractor and the sump pump inspected once a year. 6.5 Groundwater Monitoring The groundwater monitoring program shall include consistent sampling and analysis procedures that are designed to ensure monitoring results that provide an accurate representation of groundwater quality at the background and downgradient wells. The Contractor shall notify ESSO promptly (within 1 day) in writing of changes in site construction or operation or changes in adjacent property that affect or are likely to affect the direction and rate of groundwater flow and the potential for detecting groundwater contamination from the solid waste landfill that may require the installation of additional monitoring wells or sampling points. #6.5.1 Groundwater Sampling and Analysis Plan Contractor shall submit a groundwater sampling and analysis plan (GWSAP) to ESSO for review and approval prior to commencement of sampling and shall maintain a current copy in the operating record. The GWSAP shall: a. include procedures and techniques for sample collection; sample preservation and shipment, analytical procedures, chain-of-custody controls, quality assurance, and quality control; b. provide for measurement of groundwater elevations at each sampling point prior to bailing or purging. Measurement at an event shall be %.dho05dtal1068r.400CACPhMTKORDPROCJOESPEC*EXPORTPUMPSTA%SPECS%REV0113-4-1 DOC:GH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 134.1 SOLID WASTE LANDFILL Page 22 of 27 TECHNICAL Rev. 0 11 Nov 96 SPECIFICATION accomplished over a period of time short enough to avoid temporal variations in water levels. Sampling at each event shall proceed from the point with the highest water-level elevafion to those with successively lower elevations unless contamination is known to be present, in which case wells not likely to be contaminated shall be sampled prior to those that are known to be contaminated unless an alternative procedure is approved by ESSO; and c. include sampling and analytical methods that are appropriate for groundwater sampling and that accurately measure hazardous constituents and other monitoring parameters in groundwater samples. The number of samples to be collected to establish groundwater quality data shall be consistent with the appropriate statistical procedures for determination of evidence of contamination. 6.5.2 Groundwater Sampling and Analysis Groundwater samples shall not be field-filtered prior to laboratory analysis. The sampling procedures shall be protective of human health and the environment and appropriate for generation of statistically significant data. Contractor shall establish background groundwater quality in hydraulically upgradient wells or in background wells for each of the monitoring parameters or constituents required in the ground monitoring program for a solid waste landfill. Downgradient groundwater data shall not be adjusted by subtracting background groundwater data. The Contractor shall determine within 7 calendar days after completing sampling and analysis whether or not there is evidence of a statistically significant change from background values for each constituent required in the groundwater monitoring program for the solid waste landfill. In determining if there is evidence of a statistically significant change from background, the Contractor shall compare the groundwater quality of each tested constituent at each monitoring well or other sampling points to the background value of that constituent. *6.5.3 Constituents to be Monitored Compounds that groundwater samples shall be tested for include those listed in Table 4, at a minimum. ESSO may delete any of the constituents listed in Table 4 if it can be documented that the removed constituents are not reasonably expected to be in or derived from the waste contained in the landfill. Contractor may also petition ESSO for removal of constituents from the list if it believes these conditions are met. Parameters shall be tested using methods in Standard Methods for the Examination of Water and Wastewater (Mary Ann H. Franson, editor, .Fdho05Odata10686400OCPM'nWORDPROCWOSSPECEXPORTUMPSTA\SPECSuFEVM134-1.DOC:GH ESSO EXPLORAnION & PRODUCTION CHAD INC. CCS 13-4-1 SOLID WASTE LANDFILL Page 23 of 27 TECHNICAL Rev. 0 11 Nov96 SPECIFICATION American Public Health Association, 1995). Test results shall be certffied by Contractor and the records of said tests kept as per Section 30 of the Coordination Procedure. ESSO may establish an alternative list of inorganic indicator constituents in lieu of some or all of the heavy metals if the altemative constituents provide a reliable indication of inorganic releases from the solid waste landfill to the groundwater. ESSO may also add inorganic or organic constituents to those to be tested if they are reasonably expected to be in or derived from the waste contained in the unit or if they are likely to provide a useful indication of releases from the solid waste landfill to the groundwater. TABLE 4 Sample Analysis Parameters INORGANIC CONSTITUENTS CAS RN1.2 1 Antimony (Total) 2 Arsenic (Total) 3 Barium (Total) 4 Beryllium (Total) 5 Cadmium (Total) 6 Chromium (Total) 7 Cobalt (Total) 8 Copper (Total) 9 Lead (Total) 10 Mercury (Total) 11 Nickel (Total) 12 Selenium (Total) 13 Silver (Total) 14 Thallium (Total) 15 Vanadium (Total) 16 Zinc (Total) ORGANIC CONSTITUENTS3 17 Acetone 67-64-1 18 Acrylonitrile 107-13-1 19 Benzene 71-43-2 20 Bromochloromethane 74-97-5 21 Bromodichloromethane 75-27-4 22 Bromoform (tribromomethane) 75-25-2- 23 Carbon disulfide 75-15-0 24 Carbon tetrachloride 56-23-5 25 Chlorobenzene 108-90-7 26 Chloroethane (ethyl chloride) 75-00-3 .\Fdho-05\dataO\686409MCPM-nWORDPROCUO8SPEC\EXPORlUUMPSTAlECSVREVD\l34-I . OC:GH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 13 4-1 SOLID WASTE LANDFILL Page 24 of 27 TECHNICAL Rev. 0 11 Nov 96 SPECIFICATION 27 Chlorform (trichloromethane) 67-66-3 28 Dibromochloromethane 124-48-1 (chlorodibromomethane) 29 1,2-Dibromo-3-chloropropane (DBCP) 96-12-8 30 1,2-Dibromoethane (ethylene dibromide, 106-93-4 EDB) 31 o-Dichlorobenzene (1,2-dichlorobenzene) 95-50-1 32 p-Dichlorobenzene (1,4-dichlorobenzene) 106-46-7 33 trans-1,4-Dichloro-2-butene 110-57-6 34 1,1-Dichloroethane (ethylidene chloride) 75-34-3 35 1,2-Dichloroethane (ethylene dichloride) 107-06-2 36 1,1 -Dichloroethylene (1,1 -dichloroethene, 75-35-4 vinylidene chloride) 37 cis-1,2-Dichloroethylene (cis-1,2- 156-59-2 dichloroethene) 38 trans-1,2-Dichloroethylene (trans1,2- 156-60-5 dichloroethene 39 1,2-Dichloropropane (Propylene dichloride) 78-87-5 40 cis-1,3-Dichloropropane 10061-01-5 41 trans-1,3-Dichloropropene 10061-02-6 42 Ethylbenzene 100-41-4 43 2-Hexanone (methyl butyl ketone) 591-78-6 44 Methyl bromide (bromomethane) 74-83-9 45 Methyl chloride (chloromethane) 74-87-3 46 Methylene bromide (dibromomethane) 74-95-3 47 Methylene chloride (dichloromethane) 75-09-2 48 Methyl ethyl ketone (MEK., 2-butanone) 78-93-3 49 Methyl iodide (lodomethane) 74-88-4 50 4-Methyl-2-pentanone (methyl isobutyl 108-10-1 _ketone) 51 Styrene 100-42-5 52 1,1,1,2-Tetrachloroethane 630-20-6 53 1,1,2,2-Tetrachloroethane 79-34-5 54 Tetrachloroethylene (tetrachloroethene, 127-18-4 perchloroethylene) 55 Toluene 108-88-3 56 1,1,1-Trichloroethane (methychloroform) 71-55-6 57 1,1,2-Trichloroethane 79-00-5 58 Trichloroethylene (trichloroethene) 79-01-6 59 Trchlorofluoromethane (CFC-1 1) 75-69-4 60 1,2,3-Trichloropropane 96-18-4 61 Vinyl acetate 108-05-4 62 Vinyl chloride 75-01-4 63 Xylenes 1330-20-7 The Chemical Abstracts Service registry number (CAS RN). X\Fdho051data1.686400\CPMTWORDPROCUOBSPEC1EXPORTPUMPSTAlSPECSREVOE13L4-1.DOC:GH ESSO EXPLORATION & PRODUCTION CHAD INC CCS 134-1 SOLID WASTE LANDFILL Page 25 of 27 TECHNICAL Rev. 0 11 Nov 96 SPECIFICATION 2. Where *Totar is entered, all species in the groundwater that contain the element are included. 3 Common names of the volatile organic compounds are those widely used in govemment regulation, scientific publications and commerce; synonyms exist for many of them. 6.5.4 Monitoring Frequency The monitoring frequency for all constituents shall be annually during the active life of the facility and the closure period. A minimum of four statistically independent samples from each background and each downgradient well shall be collected and analyzed for the constituents. The independence of the four samples shall be achieved by bailing or purging at least three well volumes (or to dryness, if less) from each well before each of the four samples is collected. ESSO may specify an appropriate altemative frequency for repeated sampling and analysis of the constituents- The alternative frequency shall be no less than annual and shall be based on factors such as lithology and hydraulic conductivity of the aquifer and unsaturated zone, groundwater flow rates, minimum distance of travel from waste to monitoring wells, and resource value of the uppermost aquifer. #6.5.5 Changes in Groundwater Quality Not later than 60 days after each sampling event, Contractor shall notify ESSO in writing if there has been a statistically significant change from background of any tested constituent at any monitoring well. If a statistically significant change from background of any tested constituent at any monitoring well has occurred, Contractor shall immediately place a notice in the operating record describing the increase. If a statistically significant change from background of any tested constituent at any monitoring well has occurred and the Contractor has reasonable cause to think that a source other than the solid waste, landfill caused the contamination or that the statistically significant change resulted from error in sampling, analysis, statistical evaluation, or natural variation in groundwater quality, then the Contractor shall submit a report providing documentation to this effect The report shall be prepared by a qualified groundwater scientist and submitted to ESSO for review and approval not later than 90 days after the sampling event. XXFdho45Adata18084D00xCPMTXWORDPROCUO3SPEC\EXPORT\PUMPSTA\PECS\REVCA13-A-.DOC:GH ESSO EXPLORATION & .4. PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 26 of 27 TECHNICAL Rev 0 11 Nov 96 SPECIFICATION 6.6 Records The Contractor shall maintain disposal records covering at least the following: a. Major operational problems or difficulties. b. Qualitative and quantitative evaluations of the environmental impact of the disposal site including results of: 1. Leachate sampling and analysis; 2. Ground and surface water quality sampling and analysis upstream and downstream of the site. 3. Source of daily, intermediate and final cover material. 4. Waste compaction. 5. Gas generation and gas control procedures. 6. Vector control efforts. 7. Dust and litter control efforts. c. Quantitative measurements of the solid wastes handled, accomplished through routine or periodic utilization of scales and topographic surveys of the site. d. Description of amounts and types of solid waste materials received in each landfill cell identified by source of materials, as per the database required by Coordination Procedure Section 30. This database shall be turned over to ESSO at project completion. e. Location and development of cells used by the Contractor. #7.0 CLOSURE REQUIREMENTS 7.1 Within 180 days of the last receipt of wastes generated during construction, the Contractor shall complete the installation of a final cover system for the landfill cells used during the pre-operations phase that is designed and constructed to minimize infiltration and erosion. The final cover system shall be composed of no less than 750 mm (2.5 ft.) of soil and consist of an infiltration layer overlain by an erosion layer as follows: a. The infiltration layer shall consist of a minimum of 450 mm (18 in.) of earthen material with a coefficient of permeability no greater than lxi10-5 cmtsec (3.94x104 in/sec) overlain by a synthetic membrane that has a permeability less than or equal to the permeability of the bottom liner system. The minimum thickness of the synthetic membrane shall be 0.5 mm (20 mils), or 1.5 mm (60 mils), in the case of HDPE, in order to ensure proper seaming of the synthetic membrane. b. The erosion layer shall consist of a minimum of 300 mm (12 in.) of earthen material that is capable of sustaining native plant growth and shall be seeded 3dho05\data1 OO6C6400XCPMGnWOROPROCUOBSPEClEXPORTIPUMPSTA%SPECSVZEVOX13A1.DOC:GH ESSO EXPLORATION & PRODUCTION CHAD INC. CCS 13-4-1 SOLID WASTE LANDFILL Page 27 of 27 TECHNICAL Rev. 0 11 Nov 96 SPECIFICATION or sodded immediately following the application of the final cover in order to minimize erosion. 7.2 The Contractor shall submit to ESSO for approval a written final closure plan that describes the steps necessary to close the landfill cells used during the pre- operations phase. The final closure plan, at a minimum, shall include the following information: a. a description of the final cover design and methods and procedures to be used to install the cover, b. an estimate of the largest area of the landfill site ever requiring a final cover at any time during the active life of the landfill; c. an estimate of the maximum inventory of wastes ever on-site over the active life of the landfill and a summary of the types and amounts of waste contained in each landfill cell; d. a schedule for completing all activities necessary to satisfy the closure criteria; and e. a final contour map depicting the proposed final contours, estabtishing top slopes and side slopes, proposed surface drainage features, and protection of any 100-yearflood-plain. 7.3 No later than 45 days prior to the initiation of closure activities for the landfill cells used during the pre-operations phase, the Contractor shall provide written notification to ESSO of the intent to close the cells and place this notice of intent in the operating record. 7.4 Following receipt of the required final closure documents, ESSO shall acknowledge the termination of operation and closure of the cells and evaluate whether they are properly closed. Contractor shall correct any deficiencies identified by ESSO in its evaluation. #7.5 Quality control testing documentation is as follows: a. The Contractor is responsible for placing and compacting clay soils for the final cover infiltration layer. b. The Contractor shall test the 450 mm (18 in.) of compacted material for its coefficient of permeability at a frequency of no less than one test per surface acre of final cover. c. Permeability data shall be submitted to ESSO for approval. .\FdhoDO:Gdatal\06864000\CPMTHWORDPROCU08SPEH-XPORl\PUMPSTA\SPECS\ReV0l34- .DOC:GH ESSO EXPLORATION & . 2 PRODUCTION CHAD INC. CCS 21-20-107 SOIL EROSION MITIGATION Page 1 of 29 SPECIFICATION r ev. . ._1997 Prepared By Reviewed By Approved By Rev. Date Discipline Engineering Project No. Engineer Manager Engineer I Manager 0 118 Nov 96 C.K Owens P.R. Scheltema M.A. Stuchly 1 > @ - .s 7 M.E. Fedak _ Rihe9n592sdiuserdisd2t 201tO7fdocgh ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 2 of 29 SPECIFICATION Rev. 1 Oct. 1997 TABLE OF CONTENTS 1.0 GENERAL ....................................................3 2.0 SOIL EROSION MITIGATION ....................................................3 TABLES AND FIGURES TABLE 1: SPACING FOR TRENCH PLUGS ....................... ........................... 6 TABLE 2: TEMPORARY WATERWAY CROSSING MATERIALS ................ ................ 8 TABLE 3: MAXIMUM NONEROSIVE CHANNEL VELOCITIES .................................... 9 FIGURE 1: TOPSOIL STRIPPING .................................................. 11 FIGURE 2: SEDIMENT BARRIER FILTER FABRIC .................................................. 12 FIGURE 3: FABRIC FENCE SEDIMENT .................................................. 13 FIGURE 4: DIVERSION DIKE .................................................. 14 FIGURE 5: DIVERSION DIKE CONFIGURATIONS AND SPACING ............................ 16 FIGURE 6: TRENCH PLUG .................................................. 17 FIGURE 7: TIMBER BRIDGE .................................................. 18 FIGURE 8: BRIDGE WITH CULVERTS .................................................. 19 FIGURE 9: STONE FORD TEMPORARY CONTROL MEASURE ............... ................ 20 FIGURE 10: EROSION CONTROL BLANKET .................................. ................ 21 FIGURE 11: RIP RAP .................................................. 24 FIGURE 12: RIP RAP OUTLET .................................................. 26 FIGURE 13: DESIGN CHART FOR RIP RAP LININGS ............................................... 29 E:\2120107N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. CCS_ 21_20_107 SOIL EROSION MITIGATION Page 3 of 29 SPECIFICATION Rev. 1- Oct. 1997 1.0 GENERAL This specification covers the design and installation of soil erosion mitigation measures to be used to control the amount of sediment removed from project areas by natural forces such as wind and rain. Contractor's responsibilities with respect to soil preservation are also discussed in the environmental management Coordination Procedure (Section 30) in the Job Specification. In general, temporary erosion control procedures shall be directed toward preventing soil erosion at the source, preventing silt and sediment from entering waterways and migrating downstream if soil erosion cannot be prevented. Permanent erosion control measures shall be implemented to prevent sedimentation of the drainage system and to prevent erosion of the project area. Temporary erosion and sedimentation control devices shall be installed and maintained from the initial land disturbance activity until the satisfactory completion and establishment of permanent erosion control measures. At that time, temporary devices shall be removed. 2.0 SOIL EROSION MITIGATION At a minimum, Contractor shall apply the following principles in implementing effective erosion control: * Construction activities shall be sequenced to minimize the amount of area disturbed at one time. Final grading, clean-up and restoration/reclamation shall be completed as soon as possible after construction is completed. * Overland flow from upsiope areas shall be diverted around disturbed areas to minimize the amount of erosion-generating runoff from the disturbed area. * Measures that break slopes and diffuse flows or divert flows to stabilized outlets shall be used to reduce problems associated with concentrated flows and velocities resulting from clearing vegetation. * Temporary or permanent stabilization of exposed soils shall be provided as soon as practicable after construction activity ceases. Stabilization practices include but are not limited to seeding, mulching, geotextiles, sodding, and riprap. EA2120107N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 4 of 29 SPECIFICATION _ _ _ _ _ _ _ _ _ _ _ _ _ __ Rev. I Oct. 1997 2.1 Topsoil Stripping and Preservation Contractor shall strip and preserve topsoil (Figure 1) and use it to provide a suitable growth medium for revegetation of disturbed areas. In cultivated and pasture areas, topsoil shall be stripped from the excavation area of any installation (pipeline, building, roadway, drilling pad, etc.) and from any surrounding area used during construction to provide access or storage. In other locations (e.g. forest, open savanna, developed areas), only the excavation area of the intended installation and subsoil spoil areas shall be stripped unless the level of activity and site specific conditions dictate otherwise. Topsoil shall be stripped to a minimum depth of 150 millimeters. The actual topsoil depth can vary depending on the location. Topsoil shall be segregated from subsoil, and topsoil shall be stockpiled on the uphill side of the installation. Stockpiles shall not extend through watercourses. With prior ESSO written approval, one or more alternate techniques that provide at least the same level of resource protection (e.g., scarification, surface texturing, mulching, fertilizing, seeding, seedling planting, etc.) may be used to control soil erosion and facilitate the establishment of appropriate vegetation. During site restoration, disturbed areas shall be scarified 70 to 100 millimeters to relieve compaction before respreading topsoil. Topsoil shall be uniformly distributed over the recontoured surface to a minimum compacted depth of 70 millimeters on 3(H):1(V) slopes and 120 millimeters on flatter slopes. The topsoil shall not be spread while muddy or when the subsoil is wet. Irregularities in the surface that result from this and other operations shall be corrected to prevent depressions and water pockets. The topsoil shall be compacted enough to ensure good contact with the underlying soil; however, excessive compaction shall be avoided. Light packing with a roller is recommended. In Work Site areas where topsoil was not stripped, the surface shall be ripped or scarified 70 to 100 millimeters to relieve compaction as the last activity over the area. 2.2 Sediment Barrier Contractor shall construct a temporary sediment barrier (Figure 2) at the perimeter of a disturbed area to intercept and retain sediment. This practice shall be applied below disturbed areas subject to sheet or rill erosion. During clearing and grubbing operations, equipment shall be utilized to create, where possible, a sediment barrier by pushing or dumping a mixture of limbs, small vegetation, and root mat with minor amounts of soil and rock into windrows along the toe of a slope where erosion and accelerated runoff is EA2120107N.DOC:mj ESSO EXPLORATION & CCS 21 -20-1 07 PRODUCTION CHAD INC. CCS_ 21_20_107 SOIL EROSION MITIGATION Page 5 of 29 SPECIFICATION Pg f2 SPECIFICATION ~~~~~~~~~Rev. 1 Oct. 1997 expected. A filter fabric anchored over the berm shall be utilized to enhance the filtration ability of the barrier. The following are the construction specifications for the sediment barrier: * The sediment barrier shall have a minimum height of 1 meter. * The width of the sediment barrier shall be a minimum 2 meters at its base. * The barrier shall be constructed by piling brush, stone, root mat, and other material from the clearing process into a mounded row on the contour. Altematively, if clearing and grubbing operations do not generate enough debris to create the sediment barrier shown in Figure 2, Contractor shall modify the design to create a vertical silt fence with the filter fabric as shown in Figure 3. 2.3 Diversion Dikes Contractor shall construct a dike across the slope of a disturbed area to redirect sheet flow or concentrated flow runoff around disturbed areas to a stabilized outlet where water can be discharged without adversely affecting the receiving area or channel. It can also serve as an interceptor dike to shorten the length of exposed slopes by intercepting runoff and diverting it to a stabilized outlet. This practice (Figures 4 and 5) shall be used upslope of disturbed areas where erosion is likely to occur and runoff protection is needed to prevent erosion, and on sloping access right-of-way or other long, narrow sloping areas less than 30 meters wide. The dike/swale shall be designed to carry the peak runoff from at least a 24- hour, 2-year frequency storm with a freeboard of not less than 0.1 meter. The draining area shall not exceed 2 hectares. The top width shall be 0.5 meter minimum. The height shall be 0.5 meter measured from the bottom of the swale. The side slopes shall be 2(H):1(V) or flatter. The grade shall be positive, not exceeding 2 percent. The spacing for diversion dikes shall be in accordance with Figure 5. Each diversion dike or interceptor shall have an adequate outlet capable of conveying runoff to a location where the discharge does not have adverse impact. EA21 201 07N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 6 of 29 SPECIFICATION Rev. 1 Oct. 1997 2.4 Trench Plugs Contractor shall place a barrier consisting of sand bags around the pipeline to obstruct water flow or seepage along the pipeline, thereby controlling erosion of the trench backfill material. Sand bags shall contain 5 percent by weight of cement. This practice (Figure 6) shall be used along a pipeline trench where the slope exceeds 5 percent. The spacing for trench plugs shall be in accordance with Table 1. Contractor shall dig shallow ditches as necessary to channel water diverted by the ditch plugs away from the pipe trench. Table 1 Spacing for Trench Plugs Slope of Maximum Distance Pipeline Trench Between Plugs less than 5% not required except at watercourses 5 to 15% 90 m 15 to 25% 60 m 25to35% 30m larger than 35% 15 m 2.5 Temporary Waterway Crossings 2.5.1 General Contractor shall install temporary structures across streams or water- ways for short-term use by construction vehicles and heavy equipment to prevent damage to the watercourse or the deposition of sediment into the watercourse. Exceptions may be made for rock bottom watercourses. Exceptions must be approved by ESSO. This practice shall be used where heavy equipment must be moved from one side of the watercourse to another or light-duty construction vehicles must cross the watercourse frequently for a short time period. The travelway for all structures shall be a minimum 5 meters wide. The structure shall be designed to pass 60 percent of the bank-full flow or the peak flow from a 24-hour, 2 year frequency storm (whichever is less) without overtopping. E:\2120107N.DOCQmj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 7 of 29 SPECIFICATION Rev. 1 1Oct. 1997 Contractor shall ensure that erosion does not result from the 10-year peak storm. Overtopping is allowed during the 24-hour, 10-year frequency storm if contained within the limits of the channel banks. Contractor shall ensure that the design flow velocity at the crossing structure's outlet is nonerosive for the receiving channel. If the slope above the stream banks is more than 2 percent, a diversion dike shall be placed above the stream banks to divert surface runoff away from the disturbed channel section and discharge the runoff to a stable outlet. 2.5.2 Bridge A temporary bridge (e.g., Figure 7) shall consist of wood or metal and be designed to support the maximum expected load. Bridges shall be securely anchored at only one end using steel cable or chain. Anchoring shall prevent the bridge from floating downstream. 2.5.3 Bridge with Culverts A temporary bridge with culverts (Figure 8) shall be designed to support the maximum expected load. The minimum culvert size shall be 0.3 meter (12 inch) nominal diameter. The culvert shall extend a minimum 0.5 meter beyond the upstream and downstream toe of the aggregate placed around the culvert. The maximum culvert size shall be 12 meters in length. The culvert shall be covered with a minimum 0.3 meter of aggregate fill. If multiple culverts are used, they shall be separated by at least 0.3 meter of compacted aggregate fill. Filter fabric shall be placed on the streambed and stream banks prior to placement of the pipe culvert(s) and aggregate. The filter fabric shall cover the streambed and extend 0.5 meter beyond the end of the culvert and bedding material. E:\2120107N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 8 of 29 SPECIFICATION Rev. 1 Oct. 19971 2.5.4 Fords Fords can be constructed at watercourses where the bank height is less than 1.5 meters and the flow is intermittent. Approach sections shall be graded to a maximum 5(H):1(V) slope. All fords shall be constructed to minimize the blockage of stream flow and allow free flow over the ford (Figure 9). The ford shall be stabilized with a layer of stone aggregate placed on filter fabric. All areas disturbed by ford installation shall be stabilized. 2.5.5 Materials The materials used for temporary waterway crossings shall be in accordance with Table 2. Table 2 Temporary Waterway Crossing Materials Item Materials Temporary bridges Prefabricated wood or steel Culverts Steel pipe, reinforced concrete pipe, or corrugated steel Aggregate fill Clean stone, ASTM D448, Size No. 1 (40 to 90 mm) Filter fabric Woven geotextile, EXXON GTF-200 or _approved equivalent 2.6 Vegetative Lining Stabilization Contractor shall place a fabric matrix (erosion control blanket) consisting of natural fibers over seedbeds, channels, or steep slopes to prevent erosion by providing a protective cover during the establishment period of protective vegetation. This practice (Figure 10) shall be used in the following situations: * Waterways where channel velocity exceeds maximum velocities listed in Table 3 and * On slopes of 4(H):1(V) or more where the erosion hazard is high and vegetation likely to be slow to establish adequate protective cover. E:A2120107N.DXC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 9 of 29 SPECIFICATION Rev. 1 Oct. 1997 Table 3 Maximum Nonerosive Channel Velocities Soil Material Velocity (m/sec) Sandy loam 0.75 Alluvial silt ''' 1.00 Stiff clay 1.50 ('1Noncolloidal Channel lining selection shall be based on the Permissible Shear Stress method developed by the United States Federal Highway Administration's Hydraulic Engineering Circular #15, "Design of Roadside Channels with Flexible Linings." Td = Y xd xs Where: Td =maximum shear stress (kilograms per square meter [kg/M2] on channel lining Y = unit weight of water (9.8 kilonewtons per cubic meter) d = bank-full flow depth in center of channel (meters) s = channel slope gradient (meters per meter) Erosion control blanket used shall be straw, coconut, or wood fibers, or equivalent, sewn together with a biodegradable netting. The minimum width shall be 1.25 meters. For anchors, staples shall be No. 11 gauge wire or heavier and 150 to 250 millimeters long. Placement and installation shall be in accordance with the manufacturer's specifications. 2.7 Riprap Contractor shall place a layer of crushed concrete, rock, or stone (i.e., riprap) over an erodible soil surface to provide a permanent protective cover against erosion (Figures 11 and 12). Riprap shall be used in the following situations: * Waterways where soil conditions, vegetative cover, and water velocity are such that erosion can occur under the design flow conditions and E:%2120107N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 10 of 29 SPECIFICATION Rev. 1 Oct. 1997 * Disturbed waterways where vegetative lining stabilization is not adequate for protection against erosion. The riprap thickness shall be one and a half times the maximum stone size. The average stone size shall be selected from Figure 13 and be based on bank- full channel velocity. Materials for riprap shall be rock or stone with a minimum density of 2,500 kilograms per cubic meter and woven geotextile fabric, EXXON GTF-200 or an approved equivalent shall be used. Riprap shall be placed on filter fabric or a bedding of graded filter stone. E:\21 201 07N.DOC:mj ESSO EXPLORATION & -CS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 11 of 29 SPECIFICATION.Pae1 of2 SPECiFICATiON ~~~~~~ ~ ~~~~Rev. 1 Oct. 1997 FIGURE 1 TOPSOIL STRIPPING LIMITS OF DISTURBANCE FULL WORK AREA STORAGE AREA SUBSOIL D PE,i' VEHICULAR (WIDTH NOT TO EXCEED STORAGE I ' I WORKING TRAFFIC 33% OF TOTAL) AREA TRENrH I AREA AREA FULL WORK AREA UMITS OF DISTURBANCE TRENCH & SPOIL AREA TOPSOI \ STORAGE AREA SUBSOIL VEHICULAR (WIDTH NOT TO EXCEED STORAGE PIPELINE WORKING TRAFFIC 33% OF TOTAL) AREA TRENCH AREA, AREA TRENCH AND SPOIL SIDE NOTES: i. THE FULL WORK AREA WIDTH SHALL BE STRIPPED ALONG CULTIVAT:D AGRICULTURAL AREAS. IN ALL OTHER LOCATIONS, ONLY THE AREA ABOVE THE PIPELINE TRENCH AND THE SUBSOIL SPOIL AREA SHALL BE STRIPPED. 2. PIPELINE TRENCH LOCATION AND SHAPE SHOWN FOR CLARITY ONLv. R:Thenr59O2\arosdmkuserdir\2120 07rLdoc.gh ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. __CCS_21-20-107 SOIL EROSION MITIGATION Page 12 of 29 SPECIFICATION Rev. 1 Oct. 1997 - IGURE 2 SED MENTBARRIER F~7-R FAB8~1. __FILTE hBI (OPT ONAL) 1. EXCAVATE A 10 cm. X 10 cm. TRENCH 2. DRAPE FILTER FABRIC OVER ALONG THE UPHILL EDGE OF THE SEDIMENT THE SEDIMENT BARRIER AND INTO BARRIER. THE TRENCH. FABRIC SHOULD BE SECURED IN THE TRENCH WITH STAKES SET AT A SPACING OF APPROXIMATELY 1 METER. 3. BACKFILL AND COMPACT THE 4. SET STAKES ALONG THE EXCAVATED SOIL. DOWNHILL EDGE OF THE SEDIMENT BARRIER, AND ANCHOR BY TYING TWINE FROM THE FABRIC TO THE STAKES. NOTES: 1. SEDIMENT BARRIERS SHALL BE INSPECTED AFTER EACH SIGNIFICANT RAINFALL AND NECESSARY REPAIRS SHALL BE MADE PROMPTLY. 2. SEDIMENT DEPOSITS MUST BE REMOVED WHEN THEY REACH APPROXIMATELY ONE-HALF THE HEIGHT OF THE BARRIER. E:\21201O7N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTI)N CHAD INC. SOIL EROSION MITIGATION Page 13 of 29 SPECIFICATION Rev. 1 Oct. 1997 FS URE 3 FABRIO e NCE SEDIMENT BARRIER TEMPORARY EROSION C3NTROL MESURE SURFACE RUNOFF SEE NOTE 4 AS REQUIRED/ / 8~~~~~~~~~~e MAX. . 7--30 2" x 2" WOODEN POST (TYP.) PLAN (OR STEEL POST FOR HARD SOIL) SILT FENCE SH{ALL SE TRENCHED INTO SOIL(SEE DETAIL) ESILT FNCE FABRIC, EXXON GTF-1I0 OR APP ROVED RUNOFF POST BACKFILL TRENCH ELEVATION TRENCH DETAIL NOTES: 1. SILT FENCE SHALL BE INSTALLED TO FILTER SEDIMENT FROM SURFACE RUNOFF. 2. BUILD-UP OF SEDIMENT SHALL BE REMOVED WHE'N SEDIMENT REACHES 1/2 THE ABOVE GROUND HEIGHT OF THE FENCE. 3. SILT FENCES SHALL BE PLACED TO FOLLOW (RUN PARALLEL TO) THE CONTOURS. 4. ON UPSLOPE INSTALLATIONS, BOTH ENDS OF T'.TE SILT FENCE SFALL BE TURNED AND EXTENDED UPSLOPE. E\2120107N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 14 of 29 SPECIFICATION Rev. I Oc.19 FIGURE 4 - SHT. 1 OF 2 DIVERSION DIKE PERMANENT EROS ON CONTROL MEASURE 0. 5 m MIN. DIKE WITH A CREST _ (COMPACTED SOIL) 2:1 OR FLATTE 0. 4 MIN. 2: 1 OP FLATTE 2.0 m- (MIN.) SECTION A-A SURFACE RUNOFF rL DIVERSIONNDITCTC REINFORCED AREA SEE SECTION B-B DIVERSION DIKE DWG. LIMITS OF CONSTRUCTION DISTURBANCE SHT. 2 OF 2 PLAN E:\2120107N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 15 of 29 SPECIFICATION _________ ______ Rev. 1 Oct. 1997 FGUR 4 - SHT. 2 OF 2 DVERS ON DIVE PERMANENT _ROSION CONTROL VlEASJRE 1.0 m MIN. UNDISTURBED SOIL REINFORCED AREA (C.5 m PAST BREAK P07NTS, SEE A ~~~~~~~~~~~~NOTE 5) SECTION B-B NOTES: 1. DIVERSIONS SHALL BE SPACED AS INDICATED ON THE DRAWINGS. 2. WHERE SLOPE OF CONSTRUCTION AREA _XCEEDS THAT FOR SAFE INSTALLATION, DIVERSIONS SHALL BE INSTALLED AT THE TOP AND BASE OF SLOPE ONLY. 3. DIVERSION DIKE SHALL BE INSTALLED ON A MAXIM.UM 2 % SLOPE ACROSS THE RIGHT-OF-WAY. 4. OUTLET MUST BE ON VEGETATED AREA, OR STABILIZED WITH REINFORCEMENT AS SHOWN ON SECTION B-B. 5. REINFORCEMENT CAN BE AN EROSION CONTROL MAT, TURF REINFORCEMENT MAT OR ANY OTHER COMPANY APPROVED MATERIAL. E:\2120107N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 16 of 29 SPECIFICATION Rev. 1 Oct. 1997 FICURE 5 DVERSION DKE CONFIGURATIONS AND SPACING PERMANENT EROSION CONTROL MEASURE R/W R/W R/W R/W R/W R/W BDY. BDY. BDY. BDY. BDY. BDY. SLOPE SLOPE SLOPE OP7~~~~~~~~~~~~~ LP SLPE '4SLOPE t PIPELINE t PIPELINE PIPELINE DIAGONAL DIKE DIAGONAL DIKE HERRINGBONE DIKE ONE-WAY SURFACE FLOW TWO-WAY SURFACE FLOW ONE-WAY SURFACE FLOW N.T.S. ROTES: 1. USE DIAGONAL DIKES WHERE DIRECTION OF SLOPE AND SURFACE WATER MOVEMENT IS OBLIQUE TO PIPELINE RIGHT OF WAY. 2. USE HERRINGBONE DIKES AND CROSS DITCH WHERE DIRECTION OF SLOPE AND SURFACE WATER MOVEMENT IS PARALLEL TO RIGHT OF WAY. 3. DETERMINE LOCATION AND DIRECTION OF DIKE BASED ON LOCAL TOPOGRAPHY AND DRAINAGE PATTERNS. ALSO, INSTALL DIKES IMMEDIATELY DOWNSLOPE OF TRENCH BREAKERS. SKEW DIKES 5.1 TO PREVENT WATER PONDING BEHIND DIKES. EXTEND DIKES A MINIMUM OF 2M OFF THE RIGHT OF WAY. 4. TYPICAL DIVERSION DIKE SPACING:' SLOPE GRADIENT (%) TYPICAL SPACING (M)** LESS THAN 15 AS REQUIRED 15-20 60 20-25 45 25-30 35 GREATER THAN 3C 20-30 * FROM MARSHALL AND RUBEN, 1963. * RELY ON FIELD JUDGEMENT TO DETERMINE APPROPRIATE SPACING. FOR EXAMPLE, HIGHLY ERODIBLE MATERIALS, SUCH AS GLACIAL-LACUSTRINE PARENT MATERIALS, INS-ALL DIKES APPROXIMATELY 50% CLOSER THAN INDICATED ABOVE. SOURCE: ALBERTA ENVIRONMENT 1988 E:\2120107N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 17 of 29 SPECIFICATION Rev. 1 Oct. 1997 FIGURE 6 TRENCH PLUG PERMANENT EROSION CONTROL MEASURE SOlL rILLED SACKS , < ~~~~~~~~~~~~~~~~~MIN OF TRENCH r TRFNCH PIUG SPACING AS SHOWN ON PLAN (15 m MIN.) PROFILE TRENCH PLUG, \ t l lf f t B7 T 0.3 m MIN'. CROSS-SECTION NOTES: TRENCH PLUGS CONSIST OF BURLAP BAGS FILLED WITH SOIL. (TOP SOIL SHALL NOT BE USED IN TRENCH PLUGS). 2. TRENCH PWGS SHALL BE INSTALLED AT THE BANKS OF ALL MAJOR STREAM CROSSINGS. 3. TRENCH PLUGS SHALL BE LEFT IN PLACE WHEN THE TRENCH IS BACKFILLED. R:\henr5902\sarasdm\userdif\21201O7n.doc:gh ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. 21-20-107 SOIL EROSION MITIGATION Page 18 of 29 SPECIFICATION Rev. 1 Oct. 1997 FIGURE 7 TIVMBER BR DOGE TEMPORARY CONTRO MEASURE ORIGINAL STREAM BANK - BRIDGE APPROACH WIDTH AS REOUIRED \ \ FOR EQUIPMENT rEil Z . F . t I 1 I \ I \ 1 I E t i 1 I I . v FILTER FABRIC NSA R-2 STONE OR STREAM ASTM D448 #1 STONE (90mm 40mm) ! 1 \ \ \ \ PLAN TIMBER BRIDGE PROFILE / FILTER FABRIC, EXXON GTF-200 OR APPROVED EQUAL TO BE PLACED BENEATH STONE BRIDGE APPROACH (TYP. BOTH SIDES) NOTES: 1.TIMBER BRIDGES SHALL BE ADEQUATELY ANCHORED ON AT LEAST ONE END. 2.PERIODICALLY CHECK BRIDGE INSTALLATION AND REMOVE BUILD-UP OF SEDIMENT OR DEBRIS ON BRIDGE. 3.MATERIALS PLACED ALONG STREAM CHANNEL SHALL BE COMPLETELY REMOVED DURING FINAL CLEAN-UP. E:\2120107N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 19 of 29 SPECIFICATION Rev. 1 Oct. 1997 FIGURE 8 BRIDGE WITH CULVERTS TEMPORARY CONTROL MEASURE FLOI' ORiI4NAL STREAW BANK WiDTH AS REQURED CULVERT FOB t=UiilN wPIP PE C G COVER DEPTH *m *MIN*IUM)$'/FILTER TILlER FABRIC, ~~~~~~~~~~~~~~~~~~~~~~~XONABI ARVD EUATOB CLEAN STONE STREAM NSA R-3 ORr _ ii IIi I ) _ BR4IDGE SETNOTES4: PCAN 0.15 m 1 ~ /.. RDPAPWIT mmAVRAGDAMTRSH E SEDFO = FIPEDLL DTEEERJ E.3m) S ~~~~~~~~~~~~C = COVER DEPTH (0.3m MslINigUM) METRFA RIC EXON STONLE GTomF20u D OR2 A C12 OMPANYdocg APiLPRCRVEgD EQDUxA,L SM BEz BRIDGE. NOTES: 1. PERiODICALLY CHECK BRIDGE iNSUALLATION ANiD RcwMO BUliD-UP OF SEDIMENT OR i)EiBRI OiN' i3RiDGE 2. CULVERT MiES) 9DL BE SIED AS SilOiN ON PLV' 3. iATERIALS PLACE IN SRtAI CHANEL SiHAL BE COMPLETELY REMOVED DUJRiSG RNAL CLEAii-UP. 4-. RPRPAP Winill lOOmm AVERAGE DiAMiVEER Sii4Li BE USED FOR ALL BUT rHE TOP 0. i iMETER OF STONE. R:\hend;902\sarosdrnXuserdir\220t 07n.doc.gh ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 20 of 29 SPECIFICATION Rev. I Oct. 1997 FIGURE 9 STONE FORD TEMPORARY CONTROL MEASUR' ORIGINAL _ \ \1 \ \ \{t S {{{ /=STREAM BANK - (s S| 6 ||) ?)?J r FLTER WIDIH AS REQUIRED FILTIR I'OK LULIF'MENI,_)) ) \ S~~~~~~~~~~~~~~~~SR& NSA R-2 CLEAN STONE OR ASTM D448ff1 STONE (90rnrn-40mm) PLAN CIII IAII ~~~~~~STONE PAD WXON GTF-200 OR APPROVED PROFILE EQUAL NOTES: 1. THRU-STREAM EQUIPMETN CROSSINGS SHLLBE INSTALLED TO .O_VIDE STABLE PASSAGE ACROSS STREAMS, DR OTHER AREAS WHERE SF ^'NG iS IMPRACTICAL. 2. MATERIALS PLACED IN STREAM CHANNEL SHALL BE CCMPLET' -EMOVE'D. 3. APPROACHES AT THE CUT BANMKS SHALL BE NO 5-,,EFR -N: R:\henr5902sarorsdm\userdir%2120107n.doc:gh ESSO EXPLORATION & CCS 21 0 PRODUCTION CHAD INC. -20-107 SOIL EROSION MITIGATION Page 21 of 29 SPECIFICATION Rev. 1 Oct. 1997 FIGlRE 1C - SHT. 1 Or 3 ER SHOI CONTROL BLANKEI TEMPORARY EROSION CONTROL M! AS'UR 5 Or,i= TOP OF SLOPE EROSION CONTROL TOE OF SLOPE PLAN ANCHOR IN ACCORDANCE |WITH MANUFACTRERS'S INSTRUCTIONS 150mm OVERLAP r NATURAL GROUND EROSION CONTROL \ BLANKET < 150mm _ t~-15rr SECTION A-A EROSION 5r50= OVERLAP NATURAL CONTROL GROUND n BLANKET SECTION B-B STEEP SLOPE INSTALLATION > 3:1 SLOPE E:\2120107N.DOC:mj ESSO EXPLORAllON & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 22 of 29 SPECIFICATION Rev. 1 Oct. 1997 FIGURE 10 - SHT. 2 OF 3 EROSION CONTROL BLANKET TEMPORARY EROSION CONTROL MEASURE TOP OF SLOPE FLOW STAPLE PATTERN 3 BC LOW YELOCTY I C S MED TO HH D A uIEIERS A B B TOE OF SLOPE STAPLE PATTERN TABLE (SEE STAPLE PAITERN GUIDE) z~~~~~~~ r~~ ~~~ t 4 - A Xt f. 05 L )mt - X X XX> x A v X E 1 SWALE PER SQA. 1 1/2 SAPES PERSQ. M 2 STAES PER 50. M 3. SAPLESPER SQ. L STAPLE PATTERN GUIDE NOTES: 1. UISE NORTH AMERICAN GREEN ER0SION CONTROL BLANKET OR AN APPROVED EQUiAL FOR VEGETATNVE LINING STABiILIZATION. 2. EROSION CON$TROL BLANKET SHALL EXTEND COMPLETELY ACROSS DISTURBED AREA TiO PROTECT ERODIBLE SURFACES. 3. INSTALL ON FRESHLY GRADED AND ON FRESHLY SEEDED SOIL. R:\hene5SO2AsarasdmSuserdigi212O1O7n.doc:gh ESSO EXPLORATION & CCS 21 20-107 PRODUCTION CHAD INC. _ _ SOIL EROSION MITIGATION Page 23 of 29 SPECIFICATION Rev. 1 Oct. 1997 FIGURE 10 - SHT. 3 OF 3 EROSION CONTROL BLANKET TEMPORARY EROSION CONTROL MEASURE TOP OF BANK TOP OF BANK t A _ 4 f I f t _ t EROSION CONTROL BLANKET PLAN ANCHOR IN ACCOROANCE WITH MANUFACTURER'S ECB SHALL COVER CHANNEL BOTTOM INSTRUCTIONS WHERE REVEGETATIDN OF CHANNEL BOTTOM IS REQUIRED. NATURAL GROUND SECTION A-A CHANNEL INSTALLATION NOTES: 1. EROSION CONTROL BLANKET SHALL EXTEND COMPLETELY ACROSS OISTURBED AREA TO PROTECT ERODIBLE SURFACES. 2. INSTALL ON FRESHLY GRADED AND SEEDED SOIL R:ThenrSO9Zsarosdmkuserdir52120107n.doc.Sh ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 24 of 29 SPECIFICATION Rev. I Oct. 1997 FIGURE II - SHT. 1 OF 2 RIP WAD PERMANENT EROSION CONTROL MEASURE 0 A,~ 0~~~~~~~~0 H OOD ?H ORIGINAL STREAM CONSTRUCTION PIAN RIP RAP SFALL BE PLACED TO THE FULL COURSE THICKNESS INDICATED ON THE DRAWINGS IN ONE CONTINUOUS OPERATION. OPERATIONS WHICH CAUSE SEGREGATION OF THE MATERIALS SHALL NOT BE PERMITTED. INDIVIDUAL ROCKS MAY BE REARRANGED, AND THE VOIDS FILLED WITH HAND PLACED SMALLER ROCK IN ORDER TO ACHIEVE THE DESIRED UNIFORM ARMOR. BERM EXISTING BANKLINE _ t ~~FILTER FABRIC (EXXON GTF-200 OR APPROVED EQUAL) FOR ROCK GRADATION SEE TABLE. SECTION A-A E:\2120107N.OOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MlInGATION Page 25 of 29 SPECIFICATION Rev. 1 Oct. 1997 FIGURE 11 - SHT. 2 OF 2 RIP RAP PERMANENT EROSION CONTROL MEASURE NATIONAL STONE ASSOCIATION RiP RAP GRADATION TABLF S1ZE OF ROCKS IN CENTIMETERS MAXIMUM MINIMU THICKNESS TOE BERM NUMBER AVERAGE I OF RIPRAF t _________J LAYER (CM.) (M ERS) R-3 15 8 5 23 0.5 0.5 I R-4 30 15 6 45 0.75 0.75 R-5 46 23 13 69 .2 1.2 TiE 'AVERAGE S7E":' OR dw, IS DEFINED AS A SIZE THAT IS EXCEEDED BY AT LEAST 50% OF THE TOTAL WEIGHT SHIPPED. (I.E., 50% OF THE TONNAGE SHIPPED SHALL CONSIST OF PIECES LARGER THAN THE "AERAGE SIZE" SHOWN IN CHART.) it PIECES SMALLER THAN THE 'MINIMUM SIZE" SHOWN SHALL NOT EXCEED 15% OF THE TONNAGE SHIPPED. NOTES: 1. ROCK UTIUZED FOR RIP RAP SHALL CONSIST OF CLEAN, DURABLE ROCK, INSOLUBLE IN WATER, AND RESISTANT TO WEATHERING. 2. ALL MATERIAL SHALL BE FREE OF STRUCTURAL DEFECTS, SHALE SEAMS, AND ORGANIC MATTER. 3. INIDMDUAL PIECES SHOULD BE SHARPLY ANGULAR, BLOCK SHAPED, AND HAVE A MINIMUM 5?ECIF1C GRAViTY OF 2.5. 4. NO PIECE SHALL HAVE A LENGTH EXCEEDING THREE (3) TIMES ITS WIDTH OR DEPTH. 5. EACH LOAD OF ROCK SHALL BE OF A WELL-GRADED MIXTURE. A WELL-GRADED MIXTURE. IAS USED HEREIN, IS DEFINED AS A MIXTURE COMPOSED PRIMARILY OF LARGER STONE, BUT WITH A SUFFICIENT MIXTURE OF SMALLER SIZES TO FILL THE VOIDS. R:.henrS9021sarsdm\userdir%2120107n.doc:gh ESSO EXPLORATION & CCS 21-20-107 PRODUCTiON CHAD INC. SOIL EROSION MITIGATION Page 26 of 29 SPECIFICATION Rev. 1 Oc.19 FHOURE 12 - SH7. 1 OF3 R P RAP OUTLET CHANNEL SECTION VIEW .7 PLAN VIE-W La TOP OF RIP RAP F--TOP OF CHANNEL I 5OInM DOWNSTREAM CHANNEL I E l, ~~~~~~~~~~~INVERT FILTER CLOTH OR GRADED AGGREGATE FILTER SECTION VIEW PROFILE VIEW r KMINIMUM DEPTH OF RIP RAP = MAXIMUM DEPTH OF FLOW (DOWNSTREAM NORMAL DEPTH OR DISCHARGE DEPTH, WHICH EVER IS GREATER) K1, SLOPE TO VARY FROM 2:1 PIPE DIAMETER PIPE OUTLET To EXISTI-NG CHANNEL BOTTOM AT END OF APRON FILTER FABRIC OR GRADED AGGREGATE FILTER WIDTH OF BOTTOM TO VARY FROM 1/2 PIPE DIAMETER PIPE OUTLET TO EXISTING CHANNEL BOTTOM AT END OF APRCN SECTION V-EW E:U21201 07N.DOC: mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 27 of 29 SPECIFICATION Rev. I Oct. 1997 FIGURE 12 SHT. 2 OF 3 RIP RAP OUTLET - UNCONFINED PROFILE / A L ENDWALL La PLMN v Ew (Xt 1 ~~~~150mm DISCH. 0| MI. EXISTING STABLIZED CHANNEL GRADED AGGREGATE FILTER OR FILTER FABRIC PROFILE VIEW RIP RAP TO BE EMBEDDED IN ORIGINAL GRADE \ PROPOSED TRANSITION SECTION 2 2 7/ SEE RIP RAP STANDARD & FILTER FABRIC OR SPECIFICATIONS GRADED AGGREGATE FILTER CROSS SECTION A-A E:\2120107N.DOC:mj ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. _ SOIL EROSION MITIGATION 6 ) . Page 28 of 29 SPECIFICATION Rev. 1 |T Oct. 1997 FIGURE 12 - SHT. 3 OF 3 RIP RAP PERMANENT EROSION CONTROL MEASURE NATIONAL STONE ASSOCIATION __________ RIP RAP OPADATION TABLE SIZE OF ROCKS IN CENTIMETERS NSA MAXIMUM MINIMUM THICKNESS NUMBER AVERAGE OF RIPRAP __________ *4 LAYER (CM.) R-3 15 8 5 23 R-4 30 15 8 45 L R-5 46 23 13 69 * THE "AVERAGE SIZE," OR d5o, IS DEFINED AS A SIZE THAT IS EXCEEDED BY AT LEAST 50% OF THE TOTAL WEIGHT SHIPPED. (I.E., 50% OF THE TONNAGE SHIPPED SHALL CONSIST OF PIECES LARGER THAN THE "AVERAGE SIZE" SHOWN IN CHART.) ;* PIECES SMAllER THAN THE "MINIMUM SIZE' SHOWN SHALL NOT EXCEED 15% OF THE TONNAGE SHIPPED. NOTES: 1. ROCK UTIUZED FOR RIP RAP SHALL CONSIST OF CLEAN, DURABLE ROCK, INSOLUBLE IN WATER, AND RESISTANT TO WEATHERING. 2. ALL MATERIAL SHALL BE FREE OF STRUCTURAL DEFECTS, SHALE SEAMS, ANID ORGANIC MATTER. 3. INDVIDUAL PIECES SHOULD BE SHARPLY ANGULAR, BLOCK SHAPED. AND lAML A MINIMUM SPECIFIC GRAVfTY OF 2.5. 4. NO PIECE SHALL HAVE A LENGTH EXCEEDING THREE (3) TIMES ITS WIDTH OR 3EPIH. 5. EACH LOAD OF ROCK SHALL BE OF A WELL-GRADED MIXTURE. A WELL-GRADED MIXTURE, AS USED HEREIN, IS DEFINED AS A MIXTURE COMPOSED PRIMARILY Or LARGER STONE, BUT WITH A SUFFICIENT MIXTURE OF SMALLER SIZES TO FILL THE VOIDS. R:lhenr5902%sarasdmsuserdiri212O1 07n.dcc.gh ESSO EXPLORATION & CCS 21-20-107 PRODUCTION CHAD INC. SOIL EROSION MMGATION Page 29 of 29 SPECIFICATION Rev. 1 Oct 1997 FIGURE 13 DESIGN CHART FOR RIP RAP LININGS DESIGN CHART FOR RIPRAP LININGS 130G r _ _ _ ___ l_ 110 ~ _ _ _ _ _ __ _ 90 - 3 5 80~ ~ ~~~0T1 VEL0CllY ___ I -i 707ndo:g 50 _ 20 _ _ _ _ 2 4 ~~~~~~~~~~6 1 ~~ ~~~~3 5 BOTTOM VELOCIT (m/s) R:\heni69o2~sarosdm\u..rdiif,2120l07nl.doc:gh ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 1 of 22 SPECIFICATION Rev. 1 Oct. 1997 Prepared By Reviewed By Approved By Rev. Date Discipline Engineering Project No. Engineer Manager Engineer I Manager 0 15 Nov 96 C.K Owens P.R. Scheltema MA. Stuchly _____ 3o t 47 M.E. Fedak RlbenfSioamsdm\uei2120108n.dKgh ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 2 of 22 SPECIFICATION _________ ______ Rev. 1 Oct. 1997 TABLE OF CONTENTS 1.0 SCOPE .....................................................3 2.0 BASELINE ASSESSMENT AND SITE MONITORING ......................................................3 3.0 GENERAL MITIGATION MEASURES .....................................................3 4.0 EFFLUENT WATER CRITERIA ......................................................4 5.0 AIR EMISSIONS CRITERIA .....................................................5 6.0 SOIL PROTECTION MITIGATIONS ..........7..........................................7 7.0 WATER-BODY AND WETLAND PROTECTION MEASURES ..........................................8... 8.0 CONTROL OF WORK SITE DISTURBANCE AREA ...................................................... 8 9.0 MITIGATION OF CONSTRUCTION RELATED IMPACTS ...................................................9 10.0 SURFACE RESTORATION ..................................................... 17 1-1.0 SITE RECLAMATION ..................................................... 19 LIST OF TABLES TABLE I WORLD BANK LIQUID EFFLUENT CRITERIA .....................................................4 TABLE 2 WORLD BANK AMBIENT AIR QUALITY CRITERIA ..................................................5 TABLE 3. DESIGN PARAMETERS FOR AIR EMISSIONS MODELING ................... .................6 E:A2120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 3 of 22 SPECIFICATION Rev. 1 Oct. 1997 1.0 Scope Measures to protect the Work Site and surrounding areas from unacceptable impacts are defined in this specification. General measures that apply to all elements of the project are discussed. Other technical specifications include provisions to mitigate impacts resulting from their specific activity/unit. Sections, below, on baseline assessment and site monitoring, effluent water criteria, air emissions criteria and soil protection mitigations contain information that needs to be considered during the design of Contractor's temporary and permanent facilities and parameters to be monitored during the Work. Soil protection, water-body and wetland protection, control of Work Site area, and mitigation of construction related impacts sections contain information on how Contractor's in-country Work shall be conducted in order to minimize environmental impacts. Sections on surface restoration and site reclamation provide additional requirements that need to be met before closure of temporary Work Sites and Acceptance of the Work by ESSO. Contractoes environmental monitors shall be able to suspend activities if these activities are clearly having a markedly adverse effect on the environment (for instance, in periods of heavy rainfall it may be necessary to cease earth-moving activities, without stopping all of the Work). 2.0 Baseline Assessment and Site Monitoring In accordance with the Coordination Procedure, Contractor shall document Work Site conditions before beginning the Work in a given area. Contractor shall note the type of environment and current condition (e.g., evidence of human impacts or natural soil erosion). Contractor shall sample surface water and ground water (if appropriate) and document the water quality. Surface effluents from Work activities will be monitored daily and resulting changes in surface water quality recorded. Work Site conditions, and relevant soil and water samples shall be analyzed and reported to ESSO upon completion of Work Site restoration activities. Samples shall be analyzed by a third-party independent laboratory approved by ESSO. 3.0 General Mitigation Measures Contractor's responsibilities with respect to management of wastes, spill prevention and response, and protection of plant and animal species and habitat, and complementary requirements with respect to air and water pollution and site restoration are as outlined EA212M108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 4 of 22 SPECIFICATION Rev. 1 Oct. 199 in the Environmental Management Coordination Procedure (Section 30) in the Job Specification. 4.0 Effluent Water Criteria All liquid effluents disposed via surface discharge as per Contractors approved waste management plan as well as any other surface run-off from the Work Site shall meet World Bank effluent standards for waste water. All discharges of treated effluents to perennial surface water bodies must provide for at least a 100:1 dilution of the effluent. Water treatment shall include all processes necessary to achieve these standards. Effluents containing human wastes shall also be treated with 2-5 mg/L chlorine for a minimum of thirty minutes prior to discharge. Key World Bank effluent criteria are shown in Table 1. Contractor shall test effluents daily for parameters shown in Table I using methods in Standard Methods for the Examination of Water and Wastewater (Mary Ann H. Franson, editor, American Public Health Association, 1995). Test results shall be certified by Contractor and the records of said tests kept as per Section 30 of the Coordination Procedure. Table 1 World Bank Liquid Effluent Criteria' Parameter [ Maximum Levels pH 6-9 BOD5 < 50 mg/L Oil and Grease < 20 mg/L Heavy Metals, Total (except Barium) < 10 mg/L Phenolic Compounds < 100 mg/L Total Suspended Solids < 50 mg/L Coliform Bacteria < 400 MPNJ100 mL2 (MPN-Most Probable Number) Temperature - at the edge of the Max 50C above ambient temperature mixing zone of receiving waters - max 3°C if Ireceiving waters > 280C) Source: The World Bank Environment, Health and Safety Guidelines, Onshore Oil and Gas Development (World Bank, 1995) 1. Maximum daily discharge limits EA2120108N.DCC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 5 of 22 SPECIFICATION __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Rev. I Oc~t. 199~7 2. Average monthly concentration (i.e., 30 consecutive days of sampling) 5.0 Air Emissions Criteria The contractor shall ensure that air pollutant emissions from facility sources do not cause exceedances of the World Bank ambient air quality concentration standards shown in Table 2 at locations outside the Work Site boundary. ESSO will consider these standards to be met if the air emissions source performance measures given in Table 3 are met. If the measures in Table 3 are not met, then air emission control measures shall be implemented and equipment/facility design modified, as necessary, to comply with these source performance measures. Testing for stack emission rates, exhaust gas temperatures and exhaust gas flow rates shall be measured by Contractor at start-up, and shall be performed in accordance with testing methodologies deemed appropriate per the World Bank; in the absence of established World Bank testing methodologies, US EPA Source Test Sampling and Analysis Methods shall be used. Equipment-specific performance criteria presented in Table 3 are based on the size, model, relative location, operating schedules, and fuel type assumed in the Design Basis for this project. The Contractor's design of permanent facilities, including facility layout (equipment location, orientation, and building size/configuration) shall not differ substantially from facility design assumed in the Design Basis without written approval received from ESSO. Table 2 World Bank Ambient Air Quality Criteria Parameter Maximum Level Particulate Matter (<10glm) Annual Arithmetic Mean 100 pg/3 Maximum 24-hour Average 500 pxg/m Nitrogen Oxides, as NO2 Annual Arithmetic Mean 100 pg/3 Maximum 24-hour Average 200 pg/mn3 Sulfur Dioxide Annual Arithmetic Mean 100 pgim Maximum 24-hour Average 500 pig/m3 Source: The World Bank Environment, Health and Safety Guidelines, Onshore Oil and Gas Development (World Bank, 1995) EA21t20108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 6 of 22 SPECIFICATION ________________ Rev. 1 Oct. 1997J Table 3. DESIGN PARAMETERS FOR AIR EMISSIONS MODELING EQUIPMENT TYPE EQUIPMENT SIZE EMISSION RATE"'1 STACK EXHAUST GAS EXHAUST GAS HEIGHTI(2) TEMPERATURE(3) FLOW RATE(4) NO)( PM S02 (ft) (m) (K) (F) (C) _(ft3/s) (m31s) PUMP STATIONS Main Pump Diesel Engines 6000 HP 12.1 0.63 0.51 g/HP-hr 50 15.24 644 700 371 393 11 Generator Diesel Engines 1000 HP 12.1 0.63 0.51 g/HP-hr 50 15.24 644 700 371 98 3 Fired Heater 98 MBtu/hr 135 55.4 66.3 g/MBtu 125 38.1 561 550 288 894 25 DOBA OPERATIONS CENTER Flare 14000 m3fuel/hr 30.9 9.2 -00) g/MBtu 50 15.24 1272 1830 999 10,000 283 Crude Oil Topping Plant Fired Heater 11.2 MBtu/hr 135 55.4 66.3 g/MBtu 30 9.15 561 550 288 397 11 Turbines 33,000 HP 2.97 0.34 0.63 g/HP-hr 35 10.66 767 921 494 1782 50 Incinerator 3,455 tonne/year 3005 917 1084 g/tonne 20 6.10 380 225 107 125 4 (1) Values shown are maximum allowable emission rates. Incinerator emission rates are based on the following waste percentage and heat content values (where waste classifications are as defined in the Waste Incinerator Specification). Waste Classification __ Heat Content (Btu/lb) Type 0 2.30 8500 Type 1 1.60 6500 Type 2 0.40 4300 Type 3 & 4 0.05 2500 Type 5 44.75 18000 Type 6 50.90 18000 (2) Values shown are minimum allowable stack heights. (3) Exhaust temperatures should not differ from degrees Fahrenheit values presented by more than 10%. (4) Exhaust gas flow rates should not differ from values presented by more than 20%. (5) Expected to be very low because of the fuel source, assume no control measures are needed. ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 7 of 22 SPECIFICATION Rev. 1 Oct. 1997 6.0 Soil Protection Mitigations 6.1 Soil Erosion Mitigations Contractor shall take actions necessary to prevent erosion from occurring as a result of construction activities. Minimum standards and mitigation measures are included in the Soil Erosion Mitigation Specification. This specification applies to all Work Site areas including borrow pits/areas, storage and laydown areas, camps, and access roads. 6.2 Spill Remediation Standards 6.2.1 Hydrocarbons In the event of a spill of a hydrocarbon based product, Contractor shall bring all soil containing over one weight percent hydrocarbon to the surface (top 30 cm or less) for remediation or disposal. Soil containing over five weight percent hydrocarbon shall either be mixed in place to less than five weight percent total hydrocarbons or shall be removed to an ESSO approved treatment or disposal site. Soil shall be treated to below one weight percent hydrocarbon (as measured using a test method accepted by ESSO). If selected as the remediation method, in-place bioremediation of the product shall be initiated by using the following steps: * Add slow release fertilizer at a rate of 1 kg urea per 10 m2 and 0.5 kg of triple superphosphate per 10 m2 (alternate forms of nitrogen and phosphorous may be used with ESSO's approval). If run-off from the site could impact nearby streams or sensitive vegetation, the level of fertilizer should be reduced by an amount appropriate for the distance to the receptor. * Till in fertilizer * Water, if practical, to initiate biodegredation process (target: 70% of the soil's water holding capacity). 6.2.2 Acids and Bases In the event of a spill of materials with a pH more than 2 units above or below native soil pH, Contractor shall neutralize the affected soils, adjusting the pH to that of native soil in the area. E12120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. . ENVIRONMENTAL IMPACT MITIGATION Page 8 of 22 SPECIFICATION Rev. 1 Oct. 1997 6.2.3 Miscellaneous Materials Hydraulic fluid, anti-freeze, solvents and other specialty fluids used on the construction site should be selected so that impacts are minimized in the event of a release (e.g. using less toxic versions of these products). Characteristfcs of the product will determine the appropriate treatment/disposal action and the concentration of product that could be left in the site soil without significant impact. Spill response and remedial actions shall be approved on a product-by-product basis by ESSO as per the requirements of Section 30 of the Coordination Procedure. 7.0 Water-body and Wetland Protection Measures 7.1 Equipment Operation and Refueling Where mobile equipment is required to operate and refuel within 30 meters of a water-body or wetland, the following measures shall be employed by Contractor to minimize the risk of fuel spills into the water-body: (i) ensure that all containers, hoses and nozzles have no leaks; (ii) ensure that pumps have operational emergency shut-off switch; (iii) ensure that nozzles are equipped with automatic back flow shut-off switches; (iv) where fueling must be performed within this area, operators shall be stationed at both ends of the hose unless the ends are visible and are readily accessible by one operator; (v) fuel remaining in the hose shall be retumed to the storage facility; and (vi) sorbant boom or similar material capable of capturing oily substances from the surface of the water shall be placed so that any released materials shall be absorbed or contained for subsequent recovery. 7.2 Vehicle Crossings Contractor shall install and maintain vehicle crossing structures such as temporary bridges at watercourses so that no machinery need ford a watercourse except as otherwise provided in 9.4.1. 8.0 Control of Work Site Disturbance Area Work Site access shall be restricted to existing roads, railroads, additional road right-of- way provided by ESSO, waterways designated by ESSO and ESSO provided pipeline right-of-way, storage and laydown areas, and permanent facilities sites. EA2120O18N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 9 of 22 SPECIFICATION _ _ _ _ _ _ _ _ _ _ _ _ _ __ Rev. 1 Oc.1 9 Contractor shall take the following measures to control the Work Site: a) Work activities, project-related vehicle traffic, and equipment storage shall be restricted to approved roads, designated access roads, pipeline right-of-way, storage areas, staging and parking areas, and other Work Site areas; b) Contractor shall not construct any roads without prior approval from ESSO; c) All traffic safety and road closure regulations shall be followed; d) Off-road traffic outside of designated areas shall be prohibited; e) Project-related vehicles shall observe a 30 kilometer per hour maximum speed limit on the Work Site. The 30 kilometer per hour maximum speed limit applies to congested work areas and camps. Contractor shall apply judgment, such as Job Safety Analysis (including factors such as dust, population and environment) to determine safe speeds for other areas; f) Parking, storage, and general Work Site areas shall be designated by flagged stakes. These areas shall be established in locations disturbed by previous activities, to the extent possible; g) Pipeline right-of-ways shall be clearly marked at their centerline and outside boundaries, prior to construction; h) Construction shall be limited to daylight hours; i) Unauthorized public use of the Work Site areas and non-public access roads shall be minimized by placement of physical barriers and signs (with English, French and pictorial representations of the messages); and j) Unless specified by ESSO, temporary roads and Work Site areas shall be removed, and the surface reclaimed as described below, when they are no longer needed for the Work. Restoration of temporary access roads shall require the planting of trees or placement of other barriers to prevent vehicular access. Clean-up and reclamation shall be completed as quickly as practical following completion of Work activities in Work Site areas. 9.0 Mitigation of Construction Related Impacts 9.1 Clearing Cleared areas include pipeline right-of-way, sites for facilities construction, access roads, storage and laydown areas, camps, and other related Work Site areas. Contractor shall clear only the areas required for construction and operations as approved and specified by ESSO. ESSO may identify trees and other objects to be preserved depending upon size and location of the area to be cleared. Contractor shall mark vegetation, trees and other objects that are to remain and shall protect these items from damage. The disposition of trees that must be E:\2120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 10 of 22 SPECIFICATION Rev. 1 Oct. 199 felled shall be as specified below. Contractor may use timber cut on Work Site areas in its construction work (provided appropriate fees are paid to the Govemment), but shall not cut timber located off the Work Site. Brush and trees shall be felled parallel to or back toward the area to be cleared in order to minimize damage to structures and trees on adjacent property. Grubbing of root stock and stumps shall be done only where necessary to maintain unobstructed access or protect the installation. Unless specified otherwise by ESSO, Contractor shall manage and dispose of trees, brush, stumps and limbs in the following manner (i) identify, limb and segregate all trees of commercial value; (ii) cut up and neatly stack lesser materials into manageable pieces for use by local inhabitants (not requiring more than two people to carry, and no longer than three (3) meters); (iii) upon approval of ESSO, lesser materials may be processed through a chipper for use as bulking agent for land treatment, composting or distribution over cleared areas during site restoration (mulching). Buming of vegetation shall be minimized to the maximum extent feasible. 9.2 Grading Grading by Contractor shall be limited to that area necessary to permit movement and operation of equipment. Removal of soil seed- banks (topsoil) shall be done in advance of grading or trenching in order to prevent unnecessary delays. Graded material from the right-of-way shall be stockpiled in the cleared portion of the right-of-way for use during backfill and cleanup. Topsoil removal, storage and reuse shall be as described in the Soil Erosion Mitigation Specification. Grading by Contractor shall preserve the existing natural drainage topography as nearly as practicable. When terraces, levees, and other such facilities are cut, Contractor shall leave them open only as long as necessary for the Work and restore them to their original state as promptly as practical. Grading shall not be allowed in riparian areas/stream crossings within 24 hours of significant precipitation. Contractor shall avoid the formation of continuous rows of spoil or lengths of open trench that interfere with the passage of livestock and vehicles across the Work Site. Gaps shall be left in the rows of spoil at ESSO-designated intervals E:\2120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 11 of 22 SPECIFICATION I_Rev. 1 Oct. 1997 and to coincide with fences, water courses, access tracks, obvious livestock routes, etc. Stockpiled topsoil or backfill shall be stored above the stream high water mark, outside any riparian zone, and not in any area where the material could be easily washed back into the stream. The boundaries of unsuitable areas for stockpiling material at stream crossings shall be marked by Contractors environmental monitors in consultation with its construction crews. Potential erosion into a stream of stockpiled material or soil from the exposed bank shall be prevented by rows of hay bales or available equivalent along the bank. The bales shall be placed at flowing river or creek crossings at the end of each work day during the rainy season, or any other day when rain is forecast. Stockpiled topsoil or spoil shall not be exposed near a stream channel or riparian area for more than 30 days. Excess material removed from graded areas shall be stockpiled within the cleared area of the Work Site. After construction it shall be replaced as closely as possible to its original location. 9.3 Hydrostatic Testing When Contractors scope of Work includes hydrotesting of installed facilities, Contractor shall develop a hydrotest plan for approval by ESSO. Hydrotest protocols shall conform with the Hydrostatic Testing Specification and the following practices: a) Disposal of the hydrotest water shall conform with Contractors approved Waste Management Plan. Preferred locations for discharge of water will be onto soil (e.g., into infiltration beds or percolation ponds) rather than into water courses. b) When taking on hydrotest water from a watercourse, the intake hose shall be screened to prevent entrainment of fish and other aquatic life. Adequate flow rates must be maintained in the watercourse to protect aquatic life, provide for all water-body uses, and provide for downstream withdrawals of water by existing users (no more than ten (10) percent of the watercourse flow may be diverted to hydrotest use). c) Hydrostatic test manifolds shall be located outside wetlands and riparian areas to the maximum extent practicable. d) Where surface waters with potential biological pathogens are used as the hydrotest water source, Contractor shall take measures to prevent the exposure of workers to these pathogens in the event of a hydrotest leak. e) Contractor shall regulate discharge rate and use energy dissipation device(s) in order to prevent erosion, stream bottom scour, suspension of E:U120108N.D0C:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 12 of 22 SPECIFICATION Rev. 1 Oct. 1997 sediments, and excessive stream flow. Test water may need to be discharged into a filter bag, hay bale or silt fence containment structure to remove contaminants and sediments from within the pipeline prior to discharge. f Contractor shall sample the test water during discharge to verify the absence of significant oil and grease or other pollutants 9.4 Water-body Crossings It is assumed that pipelines are the only facilities that will cross water-bodies, and that pipelines will be buried. Therefore, the following text is written in the context of a buried pipeline. If other facilities cross water bodies, the intent of this section shall apply to their installation as well. 9.4.1 General Crossing Procedures Construct crossings as close to perpendicular to the axis of the water- body channel as engineering and routing conditions permit. Adequate flow rates must be maintained to protect aquatic life, provide for all water-body uses, and provide for downstream withdrawals of water by existing users. Construction equipment (except that used by clearing crews) must cross water-bodies on bridges consisting of one of the following: a. Equipment pads and culvert(s); b. Clean rock fill and culvert(s); or c. Flexi-float or portable bridge. If clearing or grading equipment must cross water-bodies prior to installation of equipment bridges, crossings shall be limited to the maximum extent feasible. Contractor shall limit use of equipment operating in the water-body to that needed to construct the crossing. Contractor shall limit the size of the crossing and adjacent impacted area to the minimum necessary for passage of the trench and associated equipment. EA2120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 13 of 22 SPECIFICATION Rv C.19 Contractor shall attempt to complete trenching and backfill work within the water-body (not including blasting) within 48 hours, unless site- specific physical conditions make completion within 48 hours impractical. 9.4.2 Equipment Bridges All equipment bridges shall be designed to withstand the maximum flow and maintained to prevent flow restriction during the period the equipment bridge is in place. Unless otherwise instructed by ESSO, remove all flue, dams and equipment bridges after final cleanup and grading but prior to completion of initial permanent seeding (if seeding is required). Where appropriate altemative access is available to the applicable parts of the Work Site, equipment bridges shall be removed if there will be more than I month between final cleanup and grading and the beginning of initial permanent seeding (if seeding is required). Consistent with the availability of reasonable altemative access, temporary bridges across water-bodies shall be removed at the earliest time practical to minimize impacts. 9.4.3 Temporary Erosion and Sediment Control Contractor shall comply with the requirements of the Soil Erosion Mitigation section of this specification in order to minimize impacts to watercourses. Contractor shall also implement the additional measures to control sediment loading in water-bodies as described here. Install and maintain, in proper working order, temporary sediment filter devices adjacent to all water-bodies in the vicinity of disturbed soil. Use trench plugs at all non-flumed water-body crossings to prevent diversion of water into upland portions of pipeline trench during construction. Dewater the trench in such a manner that no heavily silt-laden water flows into any water-body. Install permanent slope breakers and trench breakers at base of all slopes adjacent to water-bodies. EA2120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 14 of 22 SPECIFICATION Rev. 1 Oct. 1997 9.4.4 Bank Stabilization and Revegetation Limit use of rp-rap to areas where flow conditions preclude effective vegetative stabilization, unless otherwise specified by ESSO. 9.4.5 Maintenance Allow a riparan strip at least 5 meters wide, but preferably 8 or more meters wide, as measured from the water-body's mean high water mark to permanently revegetate with native woody plant species across the entire right-of-way. However, to facilitate periodic pipeline corrosion/leak surveys, a corridor centered on the pipeline up to 3 meters wide may be maintained in an herbaceous state. In addition, trees that are located within 5 meters of a pipeline and are greater than 5 meters in height may be selectively cut and removed from the right-of-way. 9.5 Wetland Crossings It is assumed that pipelines are the only facilities that will cross wetlands, and that pipelines will be buried. Therefore, the following text is written in the context of a buried pipeline. If other facilities cross wetlands, the intent of this section shall apply to their installation as well. 9.5.1 General Procedures The only access roads other than the construction right-of-way which shall be used in wetlands are those existing roads that can be used with no modification and no impact on the wetland. Contractor shall limit the size of the crossing and adjacent impacted area to the minimum necessary for passage of the trench and associated equipment. Do not locate above-ground facilities in any wetland. 9.5.2 Crossing Procedures Avoid wetland areas to the maximum extent practicable. If a wetland cannot be avoided or crossed by following an existing right-of-way, route the pipeline in a manner that minimizes disturbance to wetlands. Minimize the duration of construction-related disturbance within wetlands to the maximum extent practicable. E:A2120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 15 of 22 SPECIFICATION Rev. I Oct. 1997 Limit the width of the construction right-of-way to the minimum required for passage of the trench and associated equipment. Limit pulling of tree stumps and grading activities to directly over the trenchline. Do not grade or remove stumps or root systems from the rest of the right-of-way in wetlands unless the ESSO Inspector determines that safety-related construction constraints require removal of tree stumps from under the work-pad. Construction equipment operating in wetland areas shall be limited to that needed to dig trench, install pipe, backfill trench, and restore the Work Site. All other construction equipment shall use access roads located in upland areas to the maximum extent practicable. Where use of access roads in upland areas cannot provide appropriate access, all other construction equipment may pass through the wetland once, using the right-of-way. If standing water or saturated soils are present, use low-ground-weight construction equipment, or operate normal equipment off of timber mats, rip-rap, prefabricated equipment mats, or geotextile fabric overlain with gravel fill. Geotextile fabric use for this purpose must be flexible and strong enough to allow removal of all gravel fill and fabric from the wetland during the clean-up phase. Do not use dirt, rock fill, tree stumps, or brush to stabilize the Work Site in wetlands. Attempt to use no more than two layers of timber rip-rap to stabilize the Work Site. In the event that more than two layers of timber np-rap must be used due to site-specific construction constraints, the following information must be provided as specified at the beginning of these Procedures. a) Contractor shall explain why altemative construction methods that do not involve the use of timber rip-rap (e.g., prefabricated equipment pads, low-ground-weight equipment) cannot be used in these areas; b) A detailed plan which addresses the procedures to be used to remove all timber rip-rap, specific measures (including the import of additional fill material) to restore pre-construction surface contours, and specific measures (including the planting of herbaceous and shrub species) to ensure successful revegetation of the construction right-or-way with native wetland plant species within 3 years after construction. E:\2120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 16 of 22 SPECIFICATION Rev. 1 Oc-t.1-9-971 Remove all timber mats, rip-rap, prefabricated equipment mats, and geotextile fabric overlain with gravel fill upon completion of construction. Assemble pipeline in upland area and use "push-pull" or "float" techniques to place pipe in trench where water and other site conditions allow. 9.5.3 Spoil Pile Placement and Erosion Control Contractor shall comply with the requirements of the Soil Erosion Mitigation Specification in order to minimize impacts to wetlands. Contractor shall also implement the additional measures to control sediment loading in wetlands as described here. Contractor shall place all spoil from water-body crossings, and wetlands crossings at least 3 meters away from waters edge, as a minimum, and shall contain spoil within sediment filter devices. Where the extent of the wetiand makes placement away from the water's edge impractical, Contractor shall place spoil in areas where impact will be minimal and control water flow in the area with sediment filters. Contractor shall install and maintain, in proper working order, temporary sediment filter devices adjacent to all wetlands in the vicinity of disturbed soil to avoid sediment flow into wetlands. Contractor shall install and maintain in proper working order permanent slope breakers and trench breakers near the boundary between wetlands and adjacent disturbed upland areas to avoid sediment flow into the wetland. When dewatering trench, Contractor shall discharge the water in such a manner that no heavily silt-laden water flows into any wetland. 9.5.4 Wetlands Restoration Where the pipeline trench may drain a wetland, Contractor shall construct trench breakers and/or seal the trench bottom as necessary to maintain the original wetland hydrology. Do not use fertilizer or lime within wetlands. Restore surface contours and topsoil as required by the Surface Restoration and Site Reclamation sections, above. EA2120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 17 of 22 SPECIFICATION Re.1 Oct. 1997 Restore surface contours and topsoil as required by the Surface Restoration and Site Reclamation sections, above. 9.5.5 Maintenance Practices Vegetation maintenance practices over the full width of the permanent right-of-way in wetlands are prohibited. However, to facilitate periodic pipeline corrosion/leak surveys, a corridor centered on the pipeline up to 3 meters wide may be maintained in a herbaceous state. In addition, trees that are located within 5 meters of the pipeline and are greater than 5 meters in height may be selectively cut and removed from the wetland. 10.0 Surface Restoration 10.1 Pipeline (and Other Buried Facilities) Right-of Way Following backfill of trench, the disturbed portion of the Work Site shall be returned to natural contours by Contractor where possible. Re-contouring to natural lines and grade shall be accomplished without disruption to adjacent undisturbed habitat. The area shall be compacted sufficiently to minimize erosion or excessive future settlement. Permanent water breakers and/or terraces shall be constructed on sloping ground to prevent erosion as specified in the Soil Erosion Mitigation Specifications. Natural drainage patterns shall be restored and in potentially high erosion areas (such as the banks of water courses) earth-filled sacks, stone rip-rap or other stabilization methods shall be used to ensure that the soil does not wash out before becoming consolidated. All restoration activities other than foot traffic shall be limited to previously disturbed portions of the Work Site. When restoring disturbed right-of-way, Contractor shall: * use clean, efficient construction techniques to minimize short term disruptions and prevent long term degradation of the environment; * restore all banks of watercourses, hills and steep slopes to as near their original condition as practical; * properly rip-rap and terrace banks and slopes to control erosion; . restore terraces, levees and drainage ditches to as near their original conditions as practical; * clean-up the right-of-way immediately following the backfill of the trench; and * remove spoil, debris, piling, cofferdams, and false-work from watercourses to prevent interference of the normal water flow and watercourse use. Watercourses disturbed by construction of the pipeline (or other buried facility) shall be opened across the right-of-way and trenched for the proper flow of E:\2120108N.DOC:w ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 18 of 22 SPECIFICATION FRev.-1 Oct. 1997 necessary to divert the flow of water away from the backfilled trench and into natural drainage courses to prevent excess erosion along the facility. Contractor shall replace the soil from side hill cuts as directed by ESSO. All side hill cuts and fills shall be sloped sufficiently to prevent injury to personnel, livestock, and wildlife and to prevent erosion. Topsoil shall be spread over cleared areas once any re-grading or deep ripping of compacted areas is complete in accordance with the Soil Erosion Mitigabon Specification Chipped vegetative debris may be mixed with the topsoil and spread over cleared areas. Contractor shall evenly spread topsoil over the right- of-way to restore the natural contour of the ground and allow normal surface drainage. Where disturbed right-of-way passes across watercourses or through marshland, Contractor shall provide, place, and compact all fill material necessary to restore waterway and marshland banks to natural lines and grades or to the lines and grades specified on the drawings. Fill material shall be environmentally compatible with existing bank material to ensure consistency in vegetative growth. Where required by the drawings and/or specified in the Soil Erosion Mitigation Specification, Contractor shall utilize soil and bank stabilization to prevent bank slough and wash and to enhance vegetation growth. 10.2 Camps, Laydown Areas, Temporary Access Roads Unless ESSO has specified that an area or a part of an area of the Work Site used during the construction phase of the project will also be needed for the operations phase, all affected areas shall be restored by Contractor. These areas (camps, laydown areas and storage yards, temporary access roads, fabrication areas, etc.) shall be retumed to natural contours where possible. Re- contouring to natural lines and grade shall be accomplished without disruption to adjacent undisturbed habitat. If these areas have been compacted during use, they shall be scarified to loosen the soil. Permanent water breakers and/or terraces shall be constructed across areas of sloping ground to prevent erosion as specified in the Soil Erosion Mitigation Specification. Natural drainage pattems shall be restored and, in potentially high erosion areas, earth-filled sacks, stone rip-rap or other stabilization methods shall be used. All restoration activities other than foot traffic shall be limited to previously affected areas and marked construction zones. E\'2120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 19 of 22 SPECIFICATION IRev. 1 Oct. 19-9-7 Contractor shall replace the soil from side hill cuts on the Work Site as directed by ESSO. All side hill cuts and fills shall be sloped sufficiently to prevent injury to personnel, livestock, and wildlife and to prevent erosion. Topsoil shall be spread over cleared areas once any re-grading or deep ripping of compacted areas is complete. Contractor shall evenly spread topsoil over the area to restore the natural contour of the ground and allow normal surface drainage. Flat areas and slopes up to 3(H):1(V) grade shall be loose and friable to a depth of at least 120 millimeters. Compacted-Work Site soils shall be loosened on the surface by scarifying (raking, disking, or other acceptable means). Slopes steeper than 3(H):1(V) shall have at least 70 millimeters of loose, friable, surface soil. 10.3 Borrow Pits/Areas When borrow pits/areas will no longer be needed, the site shall be graded to ensure that it will not accumulate standing water or divert the flow of watercourses that may engulf it. If tracks were cut into river/stream banks, they shall be reinstated and measures take to prevent erosion, as necessary. The sides of the pits/areas shall be sloped sufficiently to prevent injury to personnel, livestock, and wildlife and to prevent erosion. The reclamation provisions (including topsoil conservation and replacement) described in this specification for other Work Site areas shall also apply to borrow sites. 11.0 Site Reclamation All areas not under permanent facilities shall be restored to an equal or better soil condition than when disturbance occurred so that the pre-disturbance vegetation type can re-establish itself in a short period of time. In order to facilitate revegetation, mitigations that may apply for reclamation of portions of the Work Site include fertilizing and seeding, mulching, and surface texturing. Locations where one or more of these techniques will be required to facilitate revegetation shall be identified in the field by ESSO and Contractor environmental monitors (or other qualified personnel approved by ESSO). Close attention shall be paid to areas where erosion potential is high (e.g. at the crossings of watercourses, areas of the Work Site that are seen to be subject to active erosion, etc.), and where unauthorized access to the Work Site needs to be actively discouraged (e.g. where the Work Site passes through relatively undisturbed vegetation and intersects a road or track). Large plots of land such as storage yards, borrow pits and main camp sites shall be actively revegetated. E:\2120108N.DOC:mj ESSO EXPLORATION & CCS 21 -20-1 08 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 20 of 22 SPECIFICATION Rev. I Oct. 1997 11.1 Fertilizabon and Seeding In disturbed Work Site areas with very little topsoil or naturally sparse vegetation, Contractor may need to fertilize with an N-P-K fertilizer at a loading rate suitable for new grass growth, and seed the area with an ESSO approved native seed mixture. In the absence of soil tests, 0.11 tonnes per hectare of 10- 10-10 or equivalent fertilizer shall be used in these areas. If seeding/planting of the area by Contractor is necessary, fertilizer shall be applied before seeding/planting and harrowed or disked uniformly into the soil to a minimum depth of 80 millimeters on slopes flatter than 3(H):1(V). On slopes steeper than a 3(H): 1 (V) grade, fertilizer shall be worked the best way possible. If seeding/planting of the area is necessary, native seed mixtures or plants/sprigs used shall be compatible with local soil conditions and climatic zones, and shall be free of weeds. Seed shall be applied uniformly in a manner appropriate for the type of seed used, and shall be placed in a firm, moist seedbed to a depth suitable for the seed selected. Plants/sprigs shall be planted at a suitable density and in a manner conducive to successful growth. Any seeded/planted area which fails to show a uniform stand of vegetation after one growing season shall be assessed to determine obvious causes for failure. The site shall then be reseeded/replanted, refertilized, remulched and/or reharrowed, as necessary, and/or the revegetation approach shall be modified to improve the chances of successful revegetation in the next growing season. A uniform stand of vegetation will be considered growth which shows no deterioration or bare spots greater than 1 square meter (10.76 ft2) in size and provides a minimum of 80 percent grown cover. Areas not satisfying this definition may be approved by ESSO as satisfactorily revegetated if Contractor can show that these areas are not significantly different from the surrounding environment (outside the project impacted area). One year after initial site reclamation, Contractor shall inform ESSO of the locations of all sites where vegetation is still below the target level so that ESSO may continue site reclamation efforts, as necessary. 11.2 Mulching If mulching of an area by Contractor is necessary, the following types of mulches may be acceptable: . Hay or other native pasture mixture, unrotted with a low moisture content, applied at a rate of 0.4-0.5 kg/m2. . Straw from wheat, oat, or rice (free of viable seed), unrotted with a low moisture content, applied at a rate of 0.5-0.7 kg/m2. E:2120108N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 21 of 22 SPECIFICATION MITIGATION Rev. 1 Oct. 1997 Wood cellulose fiber, applied at a rate of 0.17 kg/m2. * Stockpiled vegetation which has been chipped or shredded, applied at a rate of 0.5 kg/m2. On slopes greater than 3(H):1(V) prefabricated blankets (mats) of straw, coconut, wood or other natural plant fibers sewn together with a biodegradable netting may be used. Prefabricated blankets (mats) shall be stapled in place with No. 11 gauge wire staples 150 to 250 millimeters long. The staple pattem shall be in accordance with the manufacturers recommendations. Mulch shall be anchored immediately after mulch placement using one of the following methods as approved by ESSO: 11.2.1 Crimping A notched, straight disk crimper set to push part of the broadcast mulch fiber 50 to 80 millimeters into the soil shall be used to anchor yet leave part standing upright. 11.2.2 Imprinting Imprinting is expected to be the preferred method of surface soil/seedbed preparation on many of the disturbed portions of the project. Imprinting with a shaped roller is a cost effective practice that is well-suited for use on large portions of the Chad Development Project. The imprinter roller forms funnel shaped seedbed and seedling cradles which concentrate water and improve infiltration. At the same time, the imprinter provides simultaneous mulching of above ground plant material without topsoil inversion in a single operation. Because the surface roughness reduces wind-speed, sand deposition and the capture of wind blown seeds in the imprints are facilitated. Land imprinters generally use three basic tooth geometries to imprint conical, pyramidal or V-trough shaped funnels in the soil surface. When used in conjunction with seeding, seed shall be disseminated directly on top of the roller which allows the seed mix to be imbedded in the surface of the imprint. 11.2.3 Mulch binders/tackifiers Mulch can be anchored by injecting tackifiers into the mulch stream as the mulch leaves the blower. Non-asphaltic tackifiers consisting of vegetable gum or silicate-based polymers blended with hydrophilic polymers may be used. These shall be applied using the manufacturer's recommended rates. E:\21 201 08N.DOC:mj ESSO EXPLORATION & CCS 21-20-108 PRODUCTION CHAD INC. _ ENVIRONMENTAL IMPACT MITIGATION Page 22 of 22 SPECIFICATION Rev. 1 Oct. 1997 11.3 Surface Texturing It is expected that mitigation recommendations will include the use of an imprinter over much of the Work Site requiring restoration (including those areas where fertilizer and seed are not applied). E:k2120OG8N.DOC:mj ESSO EXPLORATION & ECS 7-4-1 PRODUCTION CHAD INC. WASTE INCINERATORS Page 1 of 13 SPECIFICATION Rev. 2 Oct. 1997 Prepared By Reviewed By Approved By Rev. Date DiscIpline Engineering Project No. Engineer Manager Engineer/ Manager 1 1 Oct 95 F.Tse R. Caldwell M. Menzies 2 ,en Cc .s -1 Rt,\henr59021=rosdmrXuserdiA7-4- .doc ESSO EXPLORATION & ECS 7-4-1 PRODUCTION CHAD INC. WASTE INCINERATORS ( 9 . Page 2 of 13 SPECIFICATION Rev. 2 Oct. 1997__; TABLE OF CONTENTS SCOPE ..............................3 DESIGNICONSTRUCTION FEATURES .............................5 MATERIALS ............................. 11 FABRICATION ............................. 12 INSPECTION AND TESTING ............................. 12 PERFORMANCE ......................... . 12 CHAD DOBA DEVELOPMENT ...................... 13 PROJECT ADDENDUM ...................... 13 LIST OF TABLES TABLE ......4 TABLE 2 ..................... 6 Revision Memo 1011995 Revision 1, Original Issue 1011997 Revision 2 complete technical and editorial change in accordance with CCS 7-4-1. R:%henr5S02sarosdm\userd;?74 1.doc ESSO EXPLORATION & ECS 74-1 PRODUCTION CHAD INC. WASTE INCINERATORS Page 3 of 13 SPECIFICATION Rev. 2 Oct. 1997 SCOPE 1.1 This specification covers the requirements for the design, fabrication, inspection, testing and supply of Waste Incinerator system and its ancillary equipment. 1.2 The system will be located outdoors in an unclassified-hazardous area inside an oil and gas production facility. The system shall be capable of safely incinerating industrial waste, construction waste, medical waste and some municipal waste. 1.3 An astersk (*) indicates that additional information is provided by ESSO in an addendum to this specification. 1.4 A pound sign (#) indicates that ESSO review/approval is required before design is finalized or equipment is purchased. 1.5 The Waste Incinerator system shall be a complete package of Suppliers standard design suitable for the application as described in this specification and the Waste Incinerator Data Sheet, and shall include, but not necessarily be limited to, the following items: a. Primary and secondary combustion chambers. b. Blowers, drivers, coupling, guards, ducts and equipment shelter. c. Trays or containers for solids or sludges. d. Built-in stack. e. Refractory lining. f. Fuel handling equipment capable of finng diesel fuel and used motor oil. g. Fuel control valve train. h. Automatic ash removal facilities. i. Burner management controls system. j. Pollution control equipment, as required. k. Waste pre-processing (e.g., shredding) and loading system. I. Start-up and commissioning of the system. R.\henr59O2\sarosdm\userdir74-1 .doc ESSO EXPLORATION & ECS 7-4-1 PRODUCTION CHAD INC. WASTE INCINERATORS Page 4ofl13 SPECIFICATION Rev. 2 Oct. 1997 1.6 No chlorinated wastes will be fed to incinerator and waste feed mixture will have a minimum heat content of 14,000 kJ/kg (6000 BTU/LB.) 1.7 The incinerator should be designed to comply with US EPA regulations for municipal waste incineration (40CFR240), at a minimum, to insure long term quality of operation. Design shall also be approprate for any solvents or hazardous wastes that may be incinerated as per Contractors Waste Management Plan. SUMMARY OF ADDITIONAL REQUIREMENTS 2.1 Table I lists the specifications, codes and standards which shall be used as a part of this specification. 2.2 The equipment and materials used shall conform to the latest editions, revisions and addenda of the codes, standards and regulations listed in Table 1. TABIF I ESSO Chad Specifications ECS 2-1-1 Equipment Noise Level Data Requirements ECS 3-4-1 Piping for Fired Equipment ECS 3-16-1 Flanges, Gaskets, Bolting and Fittings ECS 3-18-1 Piping Fabrication Shop or Field ECS 3-19-1 Piping Erection, Testing, Flushing and Cleaning ECS 4-1-2 Structural Steel Design ECS 4-1-3 Design Loads for Structures ECS 4-1-5 Wind Design Loads ECS 4-2-1 Auxiliary Structures for Operation and Maintenance ECS 15-0-100 Instrumentation General Specification ECS 15-1-200 Instrumentation for Small Oil Fired Heaters ECS 15-2-1 Temperature Instruments ECS 15-3-1 Pressure Instruments ECS 15-6-2 Environmental protection for Electronic Devices ECS 15-6-3 Programmable Logic Controllers ECS 15-1 1-1 Instruments Control Panels R:Ahenfi902 sarosdrn\userdir,7.4t.doc ESSO EXPLORATION & ECS 74-1 PRODUCTION CHAD INC. WASTE INCINERATORS Page 5 of 13 SPECIFICATION Rev. 2 Oct. 1997 TABLE I (Cont'd) ECS 16-9-1 AC Motors ECS 19-3-1 Gunite Linings ECS 19-3-3 Linings for Fired Heaters ECS 20-1-1 Inspection of Equipment and materials ECS 20-1-3 Quality Programs and Quality Assurance Plans ECS 26-1-5 Environmental Impact Mitigation ANSI Standards B31.3 Chemical Plant and Petroleum Refinery Piping B16.5 Steel Pipe Flanges and Flanged Fittings B16.47 Large Diameter Steel Flanges NPS 26 through NPS 60 DOCUMENTATION 3.1 Vendor shall supply drawings and data in sufficient detail to define interface requirements, describe all systems including accessories, define operational requirements and provide information to design and construct foundation and other related installation and support services for the waste incinerator system. DESIGNICONSTRUCTION FEATURES 4.1 The incinerator design must address the following: * Unit must provide a safe and low maintenance feed system. Feed door system must provide adequate seals. * System must provide excellent bum out of all organics. The destruction removal efficiency (DRE) for organics shall be >99% for a resulting ash organic content <1/0% -carbon by wt. a Minimum combustion temperature 8150C (15000F) in primary stage and 982°C (1 800°F) in secondary stage. * Thermal NO, <45 ppm * Particulate loadings < 0.10 grains/dSCF corrected to 12% CO2 * Unit must have a minimum of two combustion stages. * Flue Gas residence time 2 1.5 seconds. * Unit will be operated 8 hours/day. * % opacity < 5. * Input material density 1200 kg/m3 (2000 lbsfyd3.) * A shredder shall be provided to reduce all waste feed to 75mm (3 in.) max. (widest dimension). R:henrS902\sarosdm\userdit7-4 1.doc ESSO EXPLORATION & ECS 74-1 PRODUCTION CHAD INC. _____ WASTE INCINERATORS Page 6 of 13 SPECIFICAnON Rev. 2 Oct. 1997 4.2 Incinerator will be provided with low fire system capable of maintaining a unit temperature of 105'C (220'F) minimum. 4.3 The incinerator instrumentation must be kept to a minimum for long term maintainability and ease of operation. The unit will be designed for manual operation to the extent possible. Waste Classification 4.4 The classification of wastes to be incinerated shall be as per Table 2. TABLE 2 Waste Description Typical Analysis Moisture Density Heat Type wt. % kg/m3 Content kJlkg 0 Dry Cardboard, wooden 10 5 8500 industrial & pallets, dry paper, commercial floor sweepings, rubbish plastic bags I General, Cardboard, paper, 25 10 6500 industrial floor sweepings, up commercial to 20% kitchen & domestic waste rubbish 2 Refuse Kitchen & domestic 50 15 4300 wastes, wet paper, floor sweepings, garden waste 3 Pathological Hospital dressing, 10-30 5-15 4500- materials disposable beddings, 8000 gowns, etc. 4 Pathological Dead animals, 85 25-75 1000 remains human tissue, etc. 5 Industrial Industrial process . 850-960 40,000 wastes/oil wastes sludge . 6 Semi-solid Combustibles Variable Variable and solid requiring hearth, according according wastes retort, or grate to waste to waste buming equipment survey survey R:.henrS9O2\sarosdmkuserdir'74-1.doc ESSO EXPLORATION & ECS 7-4-1 PRODUCTION CHAD INC. WASTE INCINERATORS Page 7 of 13 SPECIFICATION Rev. 2 Oct. 1997 Note: 1. Waste and classification based on Handbook of Industrial Waste Disposal, Tables 9-1 and 9-3, by Richard A. Connery and N.D. Ross, published by Van Hostrand Reinhold (1980). Design Basis 4.5 The design basis, waste production rate, required incinerator capacity, fuels supplied and operational features shall be specified in the Waste Incinerator Data Sheet. Body Casing 4.6.1 The incinerator assembly shall be made of carbon steel plate and adequately reinforced with structural steel members. When structural steel frame is involved it shall be designed in accordance with ECS 4-1-2, 4-1-3 and 4-1-5. 4.6.2 The primary and secondary chambers shall be seal welded complete to prevent the inclusion of incoming air. Access for Inspection and Maintenance 4.7.1 Both primary and secondary chambers shall be provided with adequate access doors for waste loading, inspection, maintenance and ash discharge. 4.7.2 Each door assembly shall include a sealing device adequate to stand the intemal temperature of the chambers and to prevent air leakage from outside. The door assembly shall be designed to hold a minimum of 12.5 mm (0.5 inch) water negative pressure. 4.7.3 Vendor shall provide adequate ladder and plafform for easy access to perform inspection and maintenance. Sight Glasses 4.8.1 Both primary and secondary chambers shall have sight ports or sight glasses permitting safe observation of the combustion process throughout the operation. Refractories 4.9.1 All refractory design and material shall meet the requirements as described in ECS 19-3-1 and ECS 19-3-3. 4.9.2 The calculated cold face temperature of the exterior surface of the casing shall not be R: henrO902'safosdmruserdir\74.1 .doc ESSO EXPLORATION & ECS 7-4-1 PRODUCTION CHAD INC. WASTE INCINERATORS Page 8 of 13 SPECIFICATION Rev. 2 Oct. 1997 more than 82°C (180°F) based on 42°C (108°F) ambient. 4.9.3 The castable refractory shall be secured to the inside of the steel casing with anchors made of stainless steel. Waste Loading and Ash Removal Facilities 4.10.1 Supplier shall propose a system with related facilities to ensure the operation can be carred out efficiently and safely with minimum involvement of the operators. Supplier shall provide design such that ash removal from the primary chamber will be initiated automatically at the end of the cool-down cycle. Bumer and Ignition System 4.1 1.1 Vendor shall provide only designs that have been in service for at least 2 years. 4.11.2 The primary and secondary burners shall be flange mounted on the incinerator casing and piped to a single fuel supply line for ease of installation. * 4.11.3 All burners shall be capable of firing diesel fuel and used motor oil as specified on the data sheet. Electric ignition system shall be provided. 4.11.4 All bumer combustion air shall be supplied by air blowers. These air blowers shall be mounted on the incinerator casing with ducting leading to the ports of the combustion chambers. 4.11.5 Blowers and motors shall be provided with extemal lubrication. Lubrication facilities shall be grouped together for easy access for maintenance. 4.11.6 Burners with high tumdown ratio shall be used for the purpose of warming up combustion chambers and for good modulation of control and fuel efficiency. 4.11.7 Bumers shall be of the low NOx type to meet the current emission standards as outlined in par. 4.13.1, Table 3. Instrumentation and Controls 4.12.1 Instrumentation shall follow the requirements outlined in ECS 15-1-200. 4.12.2 Vendor shall provide complete Burner Management Package (BMP) for fuels as outlined on data sheets. BMP shall monitor pilots, main bumers, fans, fuel supplies, combustion chambers, stack and all other required control parameters. BMP shall also shutdown the incinerator upon a system failure and/or detection of a hazardous condition. R:Thenr502EsarQsdmNuserdi7-4-. .doc ESSO EXPLORATION & ECS 7-4-1 PRODUCTION CHAO INC. ECS_ ____ WASTE INCINERATORS Page 9 of 13 SPECIFICATION Rev. 2 Oct. 1997 4.12.3 Temperature control shall be segmented per burner gallery. Temperature control of the stack shall be included in the control scheme, as required to meet waste incineration requirements including medical, municipal and industrial wastes. 4.12.4 Other control parameters to be considered are: a. Flow rate of waste to be incinerated. b. Proper/complete incineration. c. Emission concentration and levels allowable of incinerated products including NOR, CO, CO2, O2,.SO2, PM1o and HCL. 4.12.5 Control shall be stand-alone, electronic programmable logic controller (PLC). 4.12.6 Local panels shall be suitable for outdoor and tropical use and meet the requirements of ECS 15-11-1. 4.12.7 Vendor shall advise ESSO of restrictions of controls/control panel and if control room environment is required. 4.12.8 Vendor shall supply control system completely coordinated, constructed, wired and checked out at the factory. 4.12.9 Vendor shall route/terminate locally mounted instruments through a skid edge junction box to the control panel. Local control panel may have the junction box integral. 4.12.10 Output and input signals shall be provided via a PLC Serial Communication Port for the following: a. Stack temperature. b. Stack temperature set point c. Incinerator common alarm. d. Incinerator/component running status. e. Incinerator shutdown. f. ESD input R:.hen59O3sarosdm\userd7-4-I.doe ESSO EXPLORATION & ECS 7-4-1 PRODUCTION CHAD INC. WASTE INCINERATORS Page 10 of 13 SPECIFICATION Rev. 2 Oct. 1997 9. Input to low fire state. h. Input to permissive to start. i. Local ESD. Any other available PLC register information. 4.12.11 Vendoes standard package shall be accepted provided that it meets or exceeds ESSO standards. 4.12.12 All instruments shall appear on a Vendor P&ID in compliance- with ISA Standards; tag numbers shall be assigned by ESSO. 4.12.13 All instruments shall have ISA type data sheets. 4.12.14 All control devices and systems shall be approved by ESSO prior to construction. 4.12.15 Instrument tagging for inline equipment and major components such as PLCs shall have a nameplate with the following information as applicable: a. Equipment identification number (instrument tag number). b. Pressure rating of pressure containing parts. c. Manufacturerjs name. d. Model. e. Serial number. f. Operating range. g. Materials. h. Size of outer and inner components. i. Voltage appraisal class. i. Type. k. Range. R:ThenrS921sarosdm\userdi17-4-1-doc ESSO EXPLORATION & ECS 7-4-1 PRODUCTION CHAD INC. WASTE INCINERATORS Page 11 of 13 SPECIFICATION Rev. 2 oc 19 4.12.16 Information plates and nametags shall be securely attached by mechanical means with threaded fastener or fluted rivets. Adhesive fastening method is not acceptable. Only the instrument tag number may be fastened by stainless steelcable complete with stainless steel crush clamps or 18 gauge stainless steel wire. 4.12.17 PLC shall have a communications port using Allen Bradley Data Highway Plus for interfacing to the Pipeline Automation System. 4.12.18 All transmitters shall be Honeywell Smart Transmitters. 4.12.19 All electricallelectronic equipment and devices must be listed and labelled by a Cenelec recognized testing agency for their intended use. Noise Requirements 4.13.1 The incinerator sound level the requirements of ECS 2-1-1. Emission Requirements 4.14.1 The air quality standard given in ECS 26-1-5 shall be met. Area Classification 4.15.1 Area classification for the location of the incineration system will be as specified in the data sheet. MATERIALS 5.1 Unless otherwise stated in this specification, the materials of construction shall be the Vendores standards that are suitable for the process and environment and have proven successful in similar services. 5.2 All components of the pilot ignition panel shall be suitable for tropical and outdoor installation. 5.3 A certificate of material compliance is required where special alloys other than carbon steel are used. R:Vhenr59OZ.sarosdm\userdir74.1-.doc ESSO EXPLORATION & ECS 74-1 PRODUCTION CHAD INC. WASTE INCINERATORS Page 12 of 13 SPECIFICATION Rev. 2 Oct. 1997 FABRICATION 6.1 The entire incineration system with its components shall be fabricated and packaged in Vendoes shop as much as possible tQ minimize field work. 6.2 Vendor shall fabricate and layout the whole system within the maximum dimensions permissible for transportation and be ready for start-up with minimal field assembly, except to interface with the required site facilities. INSPECTION AND TESTING 7.1 The inspection and quality control program shall be carried out and executed in accordance with ECS 20-1-1. 7.2 Vendor shall furnish copies of all inspection and quality control documents in accordance with ECS 20-1-1 and ECS 20-1-3. 7.3 Instrument and control devices/systems shall be factory acceptance tested and approved prior to shipping. PERFORMANCE 8.1 Vendor shall guarantee that the system provided meets the requirements stated in this specification and the data sheets. R.-henr5902\sarosdmXuserdir74-1 .doc ESSO EXPLORATION & ECS 7-4-1 PRODUCTION CHAD INC. WASTE INCINERATORS Page 13 of 13 SPECIFICATION Rev. 2 Oct. 1997 CHAD DOBA DEVELOPMENT PROJECT ADDENDUM 4.11.3 See the Waste Incinerator Data Sheet. 4.15.1 See other related documents for the waste incinerator. R:.MenfiSO2\sarosdm\userdiW7-4- .doc ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS (:) Page 1 of 14 SPECIFICATION Rev. 2 Aua. 1997 Prepared By Reviewed By Approved By Rev. Date Discipline Engineering Project No. Engineer Manager Engineer I Manager 1 13 Dec 96 M. Goel/A. Nagy M. Menzies F. Miquel 2. _gf~ , _. 2 ',E 5a 9 samsdmuserdiig11_ d, R:%h6nrS902LSarc$drnuSerdiA1 -1-t.1doc ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 2 of 14 SPECIFICATION I Rev. 2 Aua. 1997 TABLE OF CONTENTS SCOPE ....................................3 SUMMARY OF ADDITIONAL REQUIREMENTS ...................................3 GROUND WATER SUPPLY AND WELLS ....................................4 PUMP CONTROL ...................................5 WELL PUMPS AND MOTORS ....................................6 WATER WELL PROCEDURES ....6...............................6 LIST OF TABLES AND FIGURES TABLE I ..... 3 FIGURE I ..... 10 FIGURE 2 ......11 FIGURE 3 ..... 12 FIGURE 4 ..... 13 FIGURE 5 ..... 14 Revision Memo 12/1995 Revision 1, Original Issue 811997 Revision 2 Par 2.2 standards were added to Table 1 to define casing material. Par 3.1(g) Well casing material was specified. Par 31(h) well screen material was specified. Par 6.3 (new) 'Well Disinfection' section was added. Par 6.4 (new) 'Wefl Testing' section was added. Par 6.5 (new) 'Well Completion- section was added. R:ahenr59O2\samosdmXuserdiM1 1-1. -.doc ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 3 of 14 SPECIFICATION Rev. 2 Aug. 1997 SCOPE 1.1 This specification covers the mandatory requirements for the design of the potable/utility water and fire water supply from ground water wells. 1.2 An asterisk (*) indicates that additional information is provided by ESSO in an addendum to this specification. 13 A pound sign (#) indicates that ESSO review/approval is required before design is finalized or equipment is purchased. SUMMARY OF ADDITIONAL REQUIREMENTS 2.1 Table 1 lists the specifications and standards which shall be used with this specification. 2.2 The equipment and materials used shall conform to the latest editions, revisions and addenda of the codes, standards and regulations listed in Table 1. TABLE I ECS Specifications ECS 3-2-3 Firewater Systems ECS 3-7-1 Piping and Flexibility and Supports ECS 3-12-1 Valve Selection Criteria ECS 11-1-2 Potable Water Treatment, Storage and Distribution ECS 15-0-100 Instrumentation General Specification ECS 16-7-1 Motor Application ECS 17-6-1 Fire Protection Systems for Buildings ECS 19-1-1 Paint and Protective Coatings ECS 19-1-2 Paint and Protective Coatings Acceptance Criteria ECS 19-5-1 Cathodic Protection EA1 1-1-1 .DOC ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 4 of 14 SPECIFICATION Rev. 2 Aug. 1997 TABLE 1 (CONT'D) API Standards 5L Line Pipe ASTM Standards A53 Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless C 33 Concrete Aggregates AWWA Standards A100 Wells C200 Steel Pipe (over 150 mm) C508 Check Valves C654 Disinfection of Wells C900 PVC Pipes (over 150 mm) E101 Vertical Turbine Pumps - Line Shaft and Submersible Types GROUND WATER SUPPLY AND WELLS 3.1 Water supply source shall be from an aquifer which exists beneath the Doba area. It has been noted that fresh water is abundant at a depth of approximately 60 metres in the Kome/Bolobo field area and 90 metres in Miandoum field area. The following shall be taken into account during design: a. An Esso approved hydrogeologist shall be retained to advise on well location, spacing, design and construction. The wells shall comply with AWWA A100. b. Wells shall be located to avoid sources of surface or subsurface pollution and/or flooding. The elevation of the top of the wells should be at least 600 mm above the highest expected flood level. c. Number of wells, size and depth of borings, gravel packs, screen sizes, well casings, sizes, number and capacity of multistage submersible pumps and electric motors, and size of discharge piping and other necessary components shall be designed to meet the required discharge pressures and flows as per ECS 3-2-3 and ECS 11-1-2. E:\A 1-1-1.DOC ESSO EXPLORATION & PRODUCTION CHAD INC. ECS11-1-1 WATER WELLS Page 5ofl14 SPECIFICATION Rev. 2 Aug. 1997 d. Spacing of wells shall be such that the drawdown curves do not overlap for adjacent wells. e. The well design shall ensure that the screen section is always fully submerged and that any fluctuations in the elevation of the top of the saturated zone have been taken into account. f. Well seals shall be installed to prevent ground water contamination. 9. Well casing material shall consist of steel, API 5L Grade B or ASTM A53 Grade B. Well casing shall be seamless with standard couplings. h. A Type 304 stainless steel, continuous slot, wire wound design well screen shall be used. Well development shall be conducted to prevent intrusion of sand (gravel pack may be needed). Pump testing, chemical and bacteriological testing of water samples shall be conducted. i. The well shall be disinfected prior to use for potable water production. j. A sampling point for each well shall be provided at a suitable location for taking samples for water quality monitoring. k. Either an electric resistance tape or a water level measuring air line shall be installed to permit monitoring of ground water levels. I. On completion of the work on water wells and prior to design of water treatment, the following shall be reported: * Log of well drilling. * As-built drawings of wells, well pumps and other details. * Final pump test results to verify capacity requirements have been met. * Results of chemical and bacteriological tests on water samples. * Verification of water treatment requirements originally planned. PUMP CONTROL 4.1 The system design shall incorporate the automatic operation of up to two well pumps. Each well pump shall start or stop as controlled by the storage water levels in fire water E:\11-1-1. DOC ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 6 of 14 SPECIFICATION Rev. 2 Aug. 1997 tank or potable/utility water reservoir reaching pre-determined elevation set points or by the hydropneumatic tank pressure reaching pre-determined set points. 4.2 Any additional well pumps shall be manually controlled remotely from the control room. WELL PUMPS AND MOTORS 5.1 Multi-stage submersible well pumps shall comply with AWWA E101. 5.2 Check valves shall be installed in pump discharge pipes. 5.3 Well pump motors shall comply with ECS 16-7-1. 5.4 The power available shall be 400 Volts, 3-phase for motor duties up to 150 kW. WATER WELL PROCEDURES 6.1 The following guidelines have been developed by EXXON for Chad water wells. These guidelines are based on drilling experience at previous camp and drilling water wells and are provided for information only. a. Water wells require one joint of 9 5/8 in. surface casing, cemented in place, to prevent surface water contamination. b. Typical hole sizes for water supply wells are normally 12 1/4 in. hole for 9 5/8 in. casing and 8 1/2 in. hole for 7 in. casing. With a successful water supply well, pump capacity is the limiting factor on flow rates. c. High viscosity gel mud is required to clean and stabilize unconsolidated sands encountered in the wells. Without high viscosity gel mud, losses become excessive and sand tends to flow into the hole. d. Coarse sand typically encountered in the first 30 m (100 ft.) of a hole looks deceivingly good, but does not produce sufficient water volume. Numerous completions have been attempted with well depths less than 30 m (100 ft.) and none have produced more than 6.6 m3/hr. (1000 bbl/day). In order to obtain water volumes of 20 to 33 m3/hr. (3000 to 5000 bbl/day), water wells must be drilled through sands and clay intervals to a minimum depth of 55 m (185 ft.). At times, the depth of these water supply wells can reach over 90 m (300 ft.). e. A 7 in. casing string is typically used for the production string in the water wells. Water is produced through two 380 mm long x 175 mm x 0.75 mm mesh screen sections on the bottom of the string. The bottom hole also has a 1 m (3 ft.) rat hole section for debris accumulation. E:11-1-1. DOC ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 7 of 14 SPECIFICATION __Rev. 2 Aug. 1997 f. Pea gravel is placed in the 7 in. x 8 1/2 in. or 9 5/8 in. x 12 1/4 in. annulus to keep sand and clay from caving, bridging or creating fill on bottom. The gravel also provides a high permeability flow path for water down the annulus to the screens at the bottom. 9. To achieve clean gravel placement, water is pumped (from a tank truck) down the casing and up the annulus, while gravel is shovelled into the annulus. The intent of this approach is to flush the annulus and also the gravel, while gravel is being placed. h. To clean-up the wells, tubing is run past the bottom of the screens and compressed air is pumped down the tubing. As the air retums up the annulus, it lifts the water and hopefully any small debris that may be inside the casing. If the well does not produce satisfactorily, the casing/tubing annulus can be blocked off and the compressed air is forced through the screens and up through the gravel pack to back flush same. Water can also be pumped up through the gravel to flush out debris. i. Wells should be cleaned up by jetting with air for several days before running the submersible pump. Jetting removes any fine sand that may get through the screens. j. When running the submersible pump, care shall be taken to firmly secure the electric cable to the tubing. When pulling the pump, be certain that the cable is coming with the tubing--allow very little slack. 6.2 Figures 1 to 5 illustrate the water well procedures outlined in par. 6.1. Well Disinfection 6.3 After well has been developed and cleaned of sand and debris, Contractor shall thoroughly clean casing pipe by swabbing using alkalis, if necessary, to remove oil, grease, and lubricants. Contractor shall disinfect the well prior to use for potable water production by introduction of 50mg/liter chlorine solution into the well. The disinfectant shall be allowed to stand for 24 hours. Flushing water shall then be introduced at the bottom of the well forcing the chlorine solution out of the casing. After flushing, the well shall be pumped until there is not chlorine odor in the water. Disinfectant procedure shall comply with AWWA 654 and meet the World Health Organization Standards as per ECS 11-10-2. EA11-1-1 .DOC ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 8 of 14 SPECIFICATION Rev. 2 Auq. 1997 Well Testing 6.4 Before final acceptance of the well, water tests shall be performed by an ESSO approved laboratory to ensure water is free of any unacceptable concentrations of harmful chemicals or microbiological contaminants including bacteria, viruses, protozoa and parasites. a. Contractor shall take one sample on five successive days after well has been chlorinated and permanent pumping equipment installed and tested, and submit it to an ESSO approved laboratory for testing. Contractor shall re-disinfect water well until bacteria free samples are obtained. b. Contractor shall collect sufficient samples of water for chemical analysis after the well is free of chlorine residual, determine pH and free carbon dioxide at time of sample collection at the well site and make other determinations in a laboratory. The Contractor shall submit a procedure to ESSO for approval for the treatment of any unacceptable concentrations of chemicals in the well water as per ECS 11-10-2. Well Completion 6.5 To complete the well installation, the Contractor shall provide and install the following: a. To prevent ground water contamination, at least two well seals shall be installed within the annulus: (1.) One just above the screen, and (2.) the other at the ground surface. Sealing material shall be suitable for the intended purpose and examples may be neat cement grout, dry bentonite, bentonite slurry or a mixture of a small amount of bentonite with neat cement. b. Install well pump as indicated on the drawings and in accordance with the manufacturer's instructions. If the permanent well pump cannot be installed within three days, a cap shall be welded temporarily to the top of the casing to protect the well from damage or contamination. The cap shall be removed when a permanent pump is installed. c. Concrete sealing block shall be installed extending 1 meter (3 ft.) in all directions from the main casing. The block shall be a minimum of 150 mm (6 in.) thick and shall slope away from the wellhead at 20 mm per meter (1/4 in. per ft.). E:A11-1-1. DC ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 9 of 14 SPECIFICATION Rev. 2 Aug. 1997 d. A well casing vent shall be provided with the opening screened with 16-mesh or finer stainless steel screen. The vent shall be tumed downward and elevated above the pump base so as to minimize the drawing of contaminants into the well. e. Either an electric resistance tape or a water level measuring air line shall be installed and calibrated to permit monitoring of ground water levels. f. A sampling point shall be provided at a suitable location for taking samples for water quality monitoring. 9. On completion of the work on water wells and prior to design of water treatment, the following shall be reported: 1) Log of well drilling 2) As-built drawings of wells, well pumps and other details. 3) Final pump test results to verify capacity requirements have been met 4) Results of chemical and bacteriological tests on water samples 5) Verification of water treatment requirements originally planned EA11-1-1. DC ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 10 of 14 SPECIFICATION Aua7_ ' A FIGURE 1 TYPICAL WATER WELL BOREHOLE SKETCH _: m SURFACE LATERITE & COARSE SAND GRAVEL' 25 m 7 CASING- COARSE BROWN SAND 40 m BURNT/BROWN CLAY 1 75mrn SCREEN........ 0.75mm MESH COARSE BLUE/WHITE SAND GUIDE SHOE __ _ _ _ DEPTH = 60-90 rn1 8 1/2" HOLE R .henr5902hsrosdmWserdirll 1-1 1 .doc ESSO EXPLORATION & E 1 PRODUCTION CHAD INC. ECS _ 1_1-1- WATER WELLS Page 11 of 14 SPECIFICATION _ Rev. 2 Aug. 1997 FIGURE 2 TYPICAL WATER WELL DRILLING PROCEDURE CASING SUPPORTS PROCEDURE DITCH FOR | 1. RIG UP WATER WELL RIG AS SHOWN IN FIGURE 5. FLUID RETURNS 2. FILL PITS WITTI WATER. ADD ONE SACK CAUSTIC (USE RUB8ER GLOVES AND DO NOT ALLOW CAUSTIC TO TOUCH YOUR SKIN. IF YOU GET CAUSTIC ON YOURSELF WASH OFF IMMEDIATELY). CIRCULATE WATER WITH PUMP TO MIX CAUSTIC. ADD BENTONiTE UNTIL GOOD MUD MIX IS OBTAINED. 3. DRILL 8-1/2' HOLE TO /- 60m CIRCULATE HOt.E CLEAN BEFORE MAKING DRILL PIPE CONNECTIONS. 4. AT TOTAL DEPTH CIRCULATE HOLE CLEAN. S. PULL BIT BACK TO SURFACE AND RUN BACK TO BOTTOM. 6. CIRCULATE HOLE CLEAN AGAIN. PULL OUT OF HOLE. 7. RUN 7T CASING AND SCREENS AS ILLUSTRATED IN THIS PAGE GIN POLE TRUCK REQUIRED TO HANDLE CASING JOINTS. 8. DO NOT SET SCREENS ON BOTTOM. LEAVE 1 m RATHOLE BELOW SCREENS. WELD SUPPORTS TO CASING TO HOLD OFF BOTTOM. WEIGHT OF CASING 1 75mm SCREEN 7 IS +/- 2250 kg. THE SCREENS CANNOT SUPPORT 0.75mrn M£SH \THIS WEIGHT: THEY WILL BREAK. 9. FOR GRAVEL PLACEMENT SEE FIGURE 3. GUIDE SHOE RATHOLE = 1 m APPROX. DEPTH = 60-90 m 8 1/2" HOLE R \henrOS;>2\sarosdm\userdit\111-1 .doc ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 12 of 14 SPECIFICATION Rev. 2 Aug. 1997 FIGURE 3 TYPICAL WATER WELL GRAVEL PLACEMENT PROCEDURE TUBING RUBBER GAKET COUPLING CASING SUPPORTS DITCH FOR _ PROCEDURE FLUID RETURNS 1. FABRICATE FLANGES FOR CASING AND TUBING. MAKE RUBBER GASKET FOR SEAL BETWEEN FLANGES. WELD LOWER FLANGE TO CASING AND WELD TUBING COUPLING THROUGH CENTER OF UPPER FLANGE. CUT MATCHING BOLT HOLES IN FLANGES- 2. RUN TUBING PAST BOTTOM OF SCREENS. CUT OFF BOTTOM JOINT TO OBTAIN PROPER TUB3ING LENGTH 2 7/8- TUBING- . FOR SPACE OUT. 3. RIG-UP TANK TRUCK LOADED WITH CLEAN WATER TO PUMP. 4. PUMP CLEAN WATER DOWN TUBING TO FLUSH MUD OUT OF CASING. CONTINUE PUMPING UNTIL RETURN T CASINC WATER FROM CASING IS REASONABLY CLEAN- STOP PUMPING. 5. MATE FLANGES WITH RUBBER SEAL BETWEEN THEM. INSTALL AND TIGHTEN BOLTS. 6. PUMP CLEAN WATER DOWN TUBING THROUGH SCREENS AND UP ANNULUS BETWEEN HOLE AND CASING TO FLUSH MUD OUT OF HOLE. CONTINUE PUMPING UNTIL RETURN WATER IS REASONABLY CLEAN. 7. CONTINUE PUMPING WATER DOWN TUBING AND UP ANNULUS. SHOVEL GRAVEL DOWN ANNULUS WHILE CIRCULATING. 8. FILL ANNULUS WITH GRAVEL. 9. FOR PRODUCING WATER SEE FIGURE 4. R:\henr59O32Xrarosdm\userdi?\ t .1.t .doc ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 13 of 14 SPECIFICATION . Rev. 2 Aug. 1S97 FIGURE 4 TYPICAL PRODUCING WATER WITH AIR COMPRESSOR TO CLEAN UP WELL AIR INPUT WATER PRODUCTION DITCH FOR FLUiD RETURNS PROCEDURE 1. AFTER GRAVEL PLACEMENT IS COMPLETE RIG-UP COMPRESSOR TO TUBING. 2. WELD NIPPLE INTO SIDE OF CASING FOR WATER PRODUCTION. 3. PUMP COMPESSED AIR DOWN TUBING AND PRODUCE 2 7/8- TUBING- . WATER FROM CASING THROUGH NIPPLE AS ILLUSTRATED. 4. IF AIR ESCAPES THROUGH GRAVEL PULL TUBING, LAY DOWN ONE OR MORE JOINTS TO POSITION END OF TUBING ABOVE SCREENS, AS ILLUSTRATED. 5. IF WATER PRODUCTION IS NOT SUfFICIENT. CLOSE OFF CASING AND PUMP AIR THROUGH SCREENS TO CLEAN THEM OUT. TRY PRODUCING WATER AGAIN. GRAVEL Xz/ oE NOTE: AFTER CLEAN-UP. WELLS ARE PRODUCED WITH ELECTRIC SUBMERSIBLE PUMPS. R-AhenrS902saosc-:r.userdiAV 1 1-1.doc ESSO EXPLORATION & PRODUCTION CHAD INC. ECS 11-1-1 WATER WELLS Page 14 of 14 SPECIFICATION Rev. 2 Auq. 1997 FIGURE 5 TYPICAL WATER WELL RIG LAYOUT STEEL WATER TANK MUD RIG c: 0- 0x PIPE RACK SUCTION PIT FLOW RETURN PIT WIOTH 1xD5 BLADE LONG = 7.6m MATTING BOARDS 11 _ 1# 4.2 Chlorination shall be done using a hypochiorinator which utilizes Calcium Hypochlorite in powder or tablets. Proposals to use altemative methods of chlorination such as gas feed chlorinators shall be submitted to ESSO for approval. 4.3 The water treatment unit shall consist, as a minimum, of a complete chlorination system with automatic controls for disinfection in accordance with AWWA C653. Disinfection shall include a booster pump, metering pump, hypochlorinator, regulators, water flow meter, analyzer chloromatic valve, and controller instrumentation to automate the rate of chlorine injection. For pH adjustment, if necessary, provide pH analyzer and controller instrumentation to automate the dosage of additfonal agents for pH control. 4.4 Chlorine shall be injected at a point which will provide a minimum contact time of 20 minutes to produce a free chlorine residual of 0.5 mg/I. 4.5 The treatment unit shall have dry contacts available for remote monitoring and alarms as specified on the data sheets. Parameters shall be covered within the unit system with an alarm and a shutdown. 4.6 Two chlorine booster pumps shall be provided (one operating, one standby). 4.7 Lab equipment for standard water analysis shall be supplied as required by the applicable AWWA standards. Methods of analysis shall be as in Standard Methods for the Examination of Water and Wastewater (1995). R:\henr5902\sarosdrn\userdirA1 1-1-2.doc ESSO EXPLORATION & ECS 11-1-2 PRODUCTION CHAD INC. POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION Page 7 of 15 SPECIFICATION Rv2 A 19 TREATED WATER STORAGE 5.1 Treated water storage for shall be provided in a buried concrete reservoir. It shall be sized to hold a volume equal to the sum of the following: a. Four hours of maximum daily flow for flow balancing. b. Six hours of mean daily flow for emergency water. c. One hour of mean daily flow for utlity water. 5.2 The reservoir shall consist of at least two cells with an access hatch to each cell to facilitate maintenance. See Figure 1 for a typical potable water reservoir with pump shelter. 5.3 Reservoir vents and overflow piping shall be provided. 5.4 The interior of the reservoir must be water proofed and thoroughly disinfected prior to use in accordance with AWWA Standard C652. HYDRO-PNEUMATIC TANKS 6.1 For smaller systems, hydro-pneumatic tanks shall be used to control the cycling. of pumps and to control pressure variations in the distribution system. Water is stored under pressure in the tanks and as a draw is made on the distribution system and pressure starts to drop, water flows from the tank into the systems to maintain pressure. 6.2 The tanks shall have a flexible membrane between the air and the water, suitable for use with potable water systems. The tank shall be permanently pre-charged with air at manufacturer's recommended pressures. The tank body shall have a maximum operating pressure of 620 kPa (90 psi) and a normal operating pressure range from 275 kPa to 410 kPa (40 psi to 60 psi). It shall be constructed from corrosion-resistant materials. The tank shall be sized to minimize pump stop/start cycle frequency (verify with pump supplier as to a safe minimum cycle time). POTABLE/UTILITY WATER PUMPS Potable/Utility Water Distribution Pumps 7.1 Minimum number of pumps shall be two; one duty pump and one spare. The pumps shall be electric motor driven, automatically controlled by system demands and pressures or by remote control, and be capable of satisfying the peak hour water demand. The pump system shall be pressure controlled based on the pressure downstream of the pumps. Check valves shall be provided downstreat of the distribution pumps to prevent backflow. R:V-enrS9021sarosdm1usendir%1 1-1-2.doc ESSO EXPLORATION & ECS 11-1-2 PRODUCTION CHAD INC. POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION Page 8 of 15 SPECIFICATION Rev. 2 Aug. 199 7.2 One pump shall function- as a jockey pump. It shall maintain system pressure during low demand conditions with excess pressure relieved back into the storage reservoir. 7.3 Vertical turbine pumps shall complywith AWWA E101. 7.4 Pump motors shall comply with ECS 16-7-1 and ECS 16-9-1. 7.5 Electric power available will be 400 Volts, 3 phase for motor duties up to 150 kW. PIPING MATERIAL Underground 8.1.1 Potable water supply iines, distribution mains and branch service lines shall be PVC conforming to AWWA C900. 8.1.2 In areas where there is a chance of hydrocarbon or chemical spills, the supply fines, distribution mains and branch service lines shall be fibreglass pressure pipe as per AWWA C950 or carbon steel pipe. The carbon steel pipe shall be protected against external corrosion using a protective coating system as per ECS 19-1-1. Cathodic protection shall be provided per ECS 19-5-1. Above Ground 8.2.1 Potable water lines inside buildings shall be PVC conforming to AWWA C900. All other above-ground potable water lines shall be carbon steel protected against extemal corrosion as per ECS 19-1-1. 8.2.2 Mailable iron couplings shall be used to connect PVC pipe to carbon steel pipe. VALVES General 9.1.1 Valves shall be resilient seated gate valves and shall conform to AWWA C509. The exterior of the valve shall be factory coated. The valves shall be standard iron body, resilient rubber seated rings, modified solid disc with non-rising stem. 9.1.2 In-ground valves shall be located in a valve box accessible to maintenance and operations personnel. R:Ahenr5902sarsosdm\userdirX1-1 -2. doc ESSO EXPLORATION & ECS 11-1-2 PRODUCTION CHAD INC. POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION Page 9 of 15 SPECIFICATION ________________I Rev. 2 Au . 199-7- Pressure Reducing Valves 9.3.1 Pressure reducing valves shall maintain a constant downstream pressure regardless of varying inlet pressure. Pressure reducing valves shall be standard iron body, hydraulically operated, diaphragm actuated globe valves with stainless steel trim seats, extemal position indicator, Class 125 ANSI B16.1 flanges with 6 mm pet cocks on the inlet and outlet side of the valve. The pilot control system shall have an extemal strainer and direct acting, adjustable, spring loaded, normally open diaphragm valve. Check Valves 9.4.1 All check valves shall conform to AWWA C508 and shall be iron body, bronze mounted, swing check valves complete with outside lever and weight. CONCRETE WORKS 10.1 Concrete selection and design criteria shall be in accordance with ECS 4-1-1. Aggregates shall conformn to the requirements of ASTM C 33. TESTING AND DISINFECTION 11.1 Upon completion of construction, the following shall be performed: a. Pressure and leakage testing. b. System disinfection. C. Chemical and bacteriological testing of water samples taken from the new system. TABLE 2 Required Drinking Water Quality Parameters Design Standard Turbidity 5 NTU(1) 2 Colour 15 time colour units°2 Odour Inoffensive odour pH 6.5- 8.5 Chlorine 5 mglL, 0.6 - I mg/L 2 Monochioramine 3 mg/L F 1henrS902NsarosdmuserdiC11-1-2.doc ESSO EXPLORATION & ECS 11-1-2 PRODUCTION CHAD INC. POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION Page 10 of 15 SPECIFICATION Rev. 2 Aug. 1997 TABLE 2 (CONT'D) Parameters Design Standard Total Dissolved Solids 1000 mg/l ° Total Coliform 0 per 100 ml(3 Selenium 0.01 mg/L Hydrogen Sulfide (H2S) 0.05 mg/LL2 Inorganics Nitrates (NO3) 50 mg/L Nitrites (NO2) 3 mg/L Ammonium (NH4) 1.5 mg/L°2 Sulphates (SO4) 250 mg/L(2) Sodium (Na) 200 mg/L(z) Aluminum (Al total) 0.2 mg/L(2) Chlorides (Cl) 250 mg/L(2) Cyanides (Cn) 0.07 mg/L Fluoride (F) 1.5 mgfL Chromium (total) 0.05 mg/L Iron (Fe) 0.3 mg/L(2 Nickel (Ni) 0.2 mg/L Copper (Cu) 2 mg/L, I mg/L(2) Zinc (Zn) 5 mg/L, 3 mg/LY9 Arsenic (As) 0.01 mg/L Cadmium (Cd) 0.003 mg/L Manganese (Mn) 0.5 mg/L, 0.1 mg/L(2) Mercury (Hg) 0.001 mg/L Barium (Ba) 0.7 mg/L Lead (Pb) 0.01 mgfL R:\henrS9o2\sarvsdm\userdii\11 ..-2doc ESSO EXPLORATION & ECS 11-1-2 PROOUCTION CHAD INC_ POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION Page 11 of 15 SPECIFICATION Rev. 2 Aug. 1997 TABLE 2 (CONTD) Parameters Design Standard Antimony (Sb) 0.005 mg/L Boron (B) 0.3 mglL Molybdenum (Mo) 0.07 mg/L Aromatic Compounds Benzene 0.01 mg/L Ethylbenzene 0.3 mg/L, 2-200 gg/L(2) Toluene 0.7 mg/L, 24-170 l.g/l-~ Xylene 0.5 mg/L, 20-1800 jig/L(2 Styrene 20 ggfL, 4-2600 p.g/L-() Benzo(a]pyrene 0.7 t±g/L Chlorinated Alkanes Carbon Tetrachloride 2 pLgIL Dichloromethane 20 FggL 1,2 - Dichloroethane 30 f±g/L 1,1,1 - Trichloroethane 2000 j.g/L Chlorinated Ethenes Vinyl Chloride 5 p.g/L 1,1 - Dichloroethene 30 pg/L 1,2 - Dichloroethene 50 p,uL Trichloroethene 70 ,g/L Tetrachloroethane 40 ,g/L| Chlorinated Benzenes Monochlorobenzene 300 .g/L, 10 - 120 p,g/lL(- 1,2 - Dichlorobenzene 11000 ggIL, 1 -10 .Lg/L°' R:U7enrS902Esarosdnauserdi nt -1-2.doc ESSO EXPLORATION & ECS 11-1-2 PRODUCTION CHAD INC. POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION Page 12 of 15 SPECIFICATION Re.2 Aug. 1997 TABLE 2 (CONrD) Parameters Design Standard 1,4 - Dichlorobenzene 300 p,g/L, 0.3- 30 p.g/L°2 Trchlorobenzenes (Total) 20 pLg/L, 5- 50 ig/L(2) Disinfectant By-Products Bromate 25 pg/L Chlorite 200 ,ug/L 2-Chlorophenol O.i - 10 ,ug/L°1 2,4-Dichlorophenol 0.3-40 psg/L(23 2,4,6 - Trichlorophenol 200 jLg/L, 2-300 ig/LL2) Formaldehyde 900 4g/L Bromoform 100 pgIL Dibromochloromethane 100 pg/L Bromodichloromethane 60 ptg/L Chloroform 200 jtg/L Dichloroacetic Acid 50 l.g/L Trichloroacetic Acid 100 pg/L Chloral Hydrate (Trichloroacetaldehyde) 10 gg/L Pesticides Alachlor 20 4g/L Aidicarb 10 4gIL Aldrin/Dieldrin 0.03 4g/L Atrazine 2 4g/L Bentazone 30 ,ugQ Carbofuran 5 ,g/L Chlordane 0.2 Fg/l R:\henrf9O2Ssarcsdm\userdir,11.1-2.doc ESSO EXPLORATION a ECS 11-1-2 PRODUCTION CHAD INC. POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION Page 13 of 15 SPECIFICATION Rev. 2 Aug 1997 TABLE 2 (CONT'D) Parameters Design Standard Chlorotoluron 30 pgIL DDT 2 p.gIL 1,2-Dibromo-3-Chloropropane 1 ±gIL 2,4-D 30 .g/L 1.2-Dichloropropane 20 pig/L 1 ,3-Dichloropropene 20 ,glL Heptachlor and Heptachlor 0.03 luglL Hexachlorobenzene 1 1.g/L Isoproturon 9 pLg/L Lindane 2 RigL MCPA 2 4g/L Methoxychlor 20 pg/L Metolachlor 10 ,uglL Molinate 6 tg/L Pendimethalin 20 gg/L Pentachlorophenol 9 ±gIL Permethrin 20 p/g!L Propanil 20 pig/L Pyridate 100 .ig/L Simazine 2 4g/L Trifluralin 20 Ag/L Chlorophenoxy Herbicides Other than 90 pLg/L 2,4-D and MCPA 2,4-DB_________________ Dichlorprop 100 pg/L R:Uienr9O021sarosdmluserdiAt- 1.1-2.doc ESSO EXPLORATION & ECS 11-1-2 PRODUCTION CHAD INC. POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION Page 14 of 15 SPECIFICATION Rev. 2 Aug. 1997 TABLE 2 (CONT'D) Parameters Design Standard Fenoprop 9 plg/L Mecoprop 10 .gIL 2,4,5-T 9 ,ug/L Miscellaneous Di(2-ethlhexyl)adipate 80 pgIL Di(2-ethylhexy)phthalate 8 jg/L Acrylamide 0.5 .tg/L Epichlorohydrin 0.4 j.gIL Hexachlorobutadiene 0.6 p.g/L Edetic Acid (EDTA) 200 Rg/L Nitrilotriacetic Acid 200 4g/L Tributyltin Oxides 2 p.g/L Source: EXXON Document #95, Environmental Standards and Guidelines (September 1994). Notes: 1. NTU = Nephelometric Turbidity Units. 2. The range given shows preferred, aesthetically-based values. 3. No more than 5% of the samples per month may be positive. If less than 90 samples, no more than one can be positive. RA.:hencS902\sac.sdm\userdihx1 1 -t-2.doc ESSO EXPLORATION & ECS 11-1-2 PRODUCTION CHAD INC. POTABLE WATER TREATMENT, STORAGE AND DISTRIBUTION Page 15 of 15 SPECIFICATION Re v-.2 -TAug .1997 FIGURE 1 Typical Potable Water Reservoir with Pump Shelter TO DISTRIBUTION * SHELTER ~ ~ SYTE SUPPLY LINE __# CELL (H V OF MN STORAGE VOWSE) _JOCKEY PUMP D C E(WM PRESURE R RREUF V.VE) At eru 9O. .. --. .us.- ... .-J1A X . _ s~~~~~~~~~-PEAK DAY & PEA - \ ~~~2 CELL HOUR PUMPS ACCESS HATrCH _ __ (WrrH CHECK VALVE ^ = = < ~~~~~~~~~~~~& ISOLA4T1ON VALVES _ _ _ < -_ ~~~~~~~~~~ON DISCHARGE PIPING) PLAN MtEW *, ~SHELTER VERICAL TURBINE PUMPS7 * . & MOTOFRS / .EICA VENT WITH SCREEN n. § - - -r L =~~~~~~~OVERFLOW 1,l ~~BURIED CONCRETE I11 | .4 RBOIR RE.ERVOIR | SUMP|| RAhenTS902osasdmnXuserdill-1-2.doc SECTION 6=f6 ESSO EXPLORATION& ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT QPEclrcAnoN DISPOSAL INTO DRAINAGE FIELD Page 1 of 21 SPECIFICATION Rev. 2 -T Aug. 1997 Prepared By Reviewed By Approved By Rev. Date Discipline Engineering Project No. Engineer Manager Engineer I Manager 1 7 Dec 95 M. GoellC. Reed M. Menzies F Miquel 2 W 2 'hen 30SCP S 4 ,o4 .o ui/. .doc R.:M>enfi902\sarosdmkuserdiM 19-1-.doc oop, *-6, tW!pjasnXwpsO'MZOSVQ4JU4 01- --. --- ------ ----- - ---- 2V1 ,,,,, ..................................................................... --- --.................. ' ' :-''''''''e5vi SMl1Sid (INV S319VI J0 ISII 91 ............................ JS TIBIA 3EVNIV`80 CGNV )INVI 3OIdd1S 40 ,8nsolSQ .i ............''Nldld C31J HOV31 CNV MNVI Olld3S 40 NOilOn.LlSNO3 N0d SI1VI83 WI l-................................................................S>iNVI Olld3S 0 S1SS31 3ONVW1P 0dN3d 8''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''.' 31SAS 39VN1V c1314 HOV1 9. SW31SAS )INVi Clld3S . --'''''''''''SINZ Sn 3 d3Hl21lNOJWOZQY 40 AUVWWflS t ............................................... Sl3.Mn2 -No ia z ---- ------ '--'''-''---'3okuwws SlN3INO3 40 318V1 L661 1f5nV 2 AAa NOLlVOI-103dS IZ 40 Z 9e5d 0-1314 39E)VNIVl1G 0lNI TVSSOdS QG IN3-1443 GNV MNV 31 OLd3S ONI GVHO NOulnGSOUd 1-6-11 S03 _ ___ NOILV80ldX3 OSS3 ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT G 8 DISPOSAL INTO DRAINAGE FIELD Page 3 of 21 SPECIFICATION Rev. 2 |A FIGURE 4 ..................................................................... 20 FIGURE 5 ..................................................................... 21 Revision Memo 12/1995 Revision 1, Original Issue 811997 Revision 2 Par 3 2(e) retention period increased from 24 to 48 hours. Par 3.3(e) (new) requirement added to put waming at openings into septic tanks. Par 3.4 setback distances in Table 2 were modified. Par 3.5 (new) specification was added which defines the design loads for septic tanks. Par 4.5-2 (new) requirement was added which specifies the distance the mound must extend beyond the field. Par 10.0 a new section was added on closure of septic tanks and drainage field sites. R:Thenr5S902sarosdm1userdir%1 1.9-1 .doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT GPECIFICATION DISPOSAL INTO DRAINAGE FIELD Page 4 of 21 SPECIF[CATION Rev. 2 Aug. 1997 SCOPE 1.1 This specification covers mandatory requirements for the design, installation and materials for septic tanks, leach fields, curtain drains and lift stations for domestic sewage treatment and disposal. 1.2 An asterisk (*) indicates that additional information is provided by ESSO in an addendum to this Specification. 1.3 A pound sign (#) indicates that ESSO review/approval is required before design is finalized or equipment is purchased. SUMMARY OF ADDITIONAL REQUIREMENTS # 2.1 Table I lists the specifications, codes and standards which shall be used with this specification. If local standards exist for the materials and test methods in Table 1 which yield comparable quality, they may be substituted if approved by ESSO. 2.2 The equipment and materials used shall conform to the latest editions, revisions, and addenda of the codes, standards and regulations listed in Table 1. TABLE 1 ECS Specification ECS 3-7-1 Piping Flexibility and Supports ECS 3-12-1 Valve Selection Criteria ECS 4-1-1 Concrete Design and Design Criteria ECS 15-0-100 Instrumentation General Specification ECS 16-7-1 Motor Application ECS 19-1-1 Paint and Protective Coatings ECS 19-1-2 Paint and Protective Coatings Acceptance Criteria ECS 19-5-1 Cathodic Protection ACI Standard 301 Specifications for Structural Concrete 318 Building Code Requirements for Reinforced Concrete 504 Guide to Joint Sealants for Concrete Structures R :Thenr5902\sarosdmruserdi611 .9-1 .doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT O ~~~DISPOSAL INTO DRAINAGE FIELD Page 5 of 21 SPECIFICATION Rev.2 Aug.1997 TABLE 1 (CONT'D) ASTM Standards A 53 Pipe, Steel, Black and Hot Dipped, Zinc Coated, Welded and Seamless A 82 Steel Wire, Plain, for Concrete Reinforcement A 184M Fabricated Deformed Steel Bar Mats for Concrete Reinforcement A 185 Steel Welded Wire Fabric, Deformed, for Concrete Reinforcement A 496 Steel Wire, Deformed. for Concrete Reinforcement A 497 Steel Welded Wire Fabric, Deformed. for Concrete Reinforcement A 615M Deforned and Plain Billet-Steel Bars for Concrete Reinforcement A 616M Rail-Steel Deformed and Plain Bars for Concrete Reinforcement A 617M Axle-Steel Deformed and Plain Bars for Concrete Reinforcement C 33 Concrete Aggregates C 39 Method for Compressive Strength of Cylindrical Concrete Specimens C 94 Ready-Mixed Concrete C 260 Air-Entraining Admixtures for Concrete C 595M Blended Hydraulic Cements C 685 Concrete Made by Volumetric Batching and Continuous Mixing C 890 Minimum Structural Design Loading for Monolithic or Sectional Precast Concrete Water and Wastewater Structures C 1227 Precast Concrete Septic Tanks D 2321 Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications D 2729 Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings F 405 Corrugated Polyethylene (PE) Tubing and Fittings F 412 Terminology Relating to Plastic Piping Systems F 449 Subsurface Installation of Corrugated Thermoplastic Tubing for Agricultural Drainage or Water Table Control ASTM Standards F 758 Smooth-Wall Poly (Vinyl Chloride) (PVC) Plastic Underdrain Systems for Highway, Airport and Similar Drainage F 789 Type PS-46 Poly (Vinyl Chloride) (PVC) Plastic Gravity Flow Sewer Pipe and Fiftings AWWA Standards C200 Steel Waterpipe - 150 mm and Larger C508 Check Valves C509 Resilient Seated Gate Valve 2.3 The local approving authority (local health departments, etc.) shall be contacted R:\henr5902\sarosdm\userdSV1 1-9-1.doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT 8 DISPOSAL INTO DRAINAGE FIELD Page 6 of 21 SPECIFICATION Rev. 2 Aug- 1997 regarding septic tank specific requirements for leach field design materials and their instalfations. SEPTIC TANK SYSTEMS 3.1 Septic tanks shall be buried, watertight receptacles designed to receive wastewater (discharge from toilets, kitchens, baths, showers, sinks and washing machines) from office buildings, plant buildings and residential and service buildings. The septic tank separates solids from liquids, provides limited digestion of organic matter, stores solids and allows the clarified liquid to discharge for further treatment and disposal. 3.2 Septic tanks may be cylindrical, circular or rectangular in shape. Septic tank design criteria shall be the following (see Figure 1): a. Adequate sludge storage shall be provided to prevent settleable solids from flowing into the outlet pipe. b. Air scum volume above the liquid shall be at least 12.5% of the liquid volume but not less than 230 mm (9 in.) high for the entire surface above the liquid. c. Inlet bafflefinlet tee shall direct the flow downwards to prevent the scum layer from plugging the inlet The inlet baff3elinlet tee shall extend at least 450 mm (18 in.) below the water line but not more than 40% of the water depth. The inlet baffle/inlet tee shall be at least 150 mm (6 in.) above the water line. d. Outlet baffle/outlet tee shall retain the floating scum layer and prevent scum from entering the outlet pipe. The outlet baffle/outlet tee shall extend at least 450 mm (18 in.) below the water line but not more than 40% of the water depth. The outlet baffle/outlet tee shall extend 150 mm (6 in.) above water level. e. Retention period shall be not less than 48 hours at maximum sludge depth and scum accumulation. f. Outlet configuration shall include a gas baffle or deflector to deflect suspended solids away from the outlet (refer to Figure 2 for details of different types of deflectors). It shall be placed below the outlet tee or baffle with an angle to the bottom slab of 60'. It shall be placed a maximum of 150 mm (6 in.) below the entrance of liquid into the effluent pipe measured at the front of the deflector. The deflector shall extend 50 mm (2 in.) beyond the entrance on all sides. g. Septic tanks shall have multiple compartments tanks unless the flow is very small. RA:her%9O02\sarcsdmWuserdir\1 I .9.doc ESSO EXPLORATION E ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT SPECIFICATION DISPOSAL INTO DRAINAGE FIELD Page 7 of 21 SPECIFICATION Rev. 2 Aug. 1997 h. First and second compartments shall be of unequal size (the second compartment is commonly 1/3 to Y2 the size of the first) to minimize inter- compartmental mixing due to oscillatory effects. Surface area to depth ratio for all chambers shall be maximized. The ratio shall be greater than 2.0. Interconnections between chambers shall be similar in design to the final outlet. k. Vents shall be provided to allow the escape of methane and hydrogen sulphide gas. I. Access to the tank interior shall be provided for inspection and cleaning. m. Septic tank capacity shall have a safety factor of two to three times the daily design flow. Septic tank capacity shall be increased by one fifth if garbage grinders are installed in household units. Garbage grinders increase both the settleable and floatable solids in the wastewater and their accumulation rates in septic tanks. n. Grease traps shall be installed upstream of septic tanks to remove grease before wastewater enters the tanks. Grease retention capacity in kilograms shall be at least equal to 25% of the flow capacity in I/min (grease retention capacity in pounds shall be at {east equal to twice the flow capacity in gallons per minute). O. A siphon or pump chamber shall be provided that is attached to or separate from the septic tank to automatically discharge the correct volume of sewage to the leach field and prevent "dribble flows" which may use only a portion of the leach field. For larger systems two siphons may be utilized. p. Invert of the outlet pipe from the septic tank shall be a minimum of 100 mm (4 in.) above the invert of any distribution pipe in the leach field. 3.3. The following shall be provided for the top slab: a. Access openings in chamber to permit inspection, pump-out and sludge removal. b. Covers with plastic or epoxy-coated steel bar handles shall be provided for the openings. Covers must be prevented from moving laterally if sitting on top of the slab. c. Locks for covers that are flush with or above the ground to prevent unauthorized R:\her.f5902\sa rosdmruserd ir%1 -9-1.doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT O) DISPOSAL INTO DRAINAGE FIELD Page 8 of 21 SPECIFICATION Rev. 2 Ag.1997 access to the septic tank. d. If the tank slab is below grade it shall have a minimum soil cover of 300 mm (12 in.) and manhole risers shall be provided to raise access openings 150 mm (6 in.) above finish grade elevation. e. Where access opening or an inspection opening has a dimension greater than 200mm (8 in.) a label of non-corrosive material shall be placed in a prominent place to warn everyone, in French and English, that "Entrance into the Tank could be Fatal." 3.4 Minimum setbacks for septic tank systems shall be as shown in Table 2. 3.5 Septic tanks shall be designed for loads in accordance with ASTM C890. If the septic tank is located in an area where vehicular traffic has access then the septic tank shall be designed for an AASHTO HS-20 load. TABLE 2 Features Distance To Septic Distance To Leach Tank (meters) Field (meters) Building (outside wall face) 3.0 10.0 Property Boundary 3.0 3.0 Wells 15.0 60.0 Surface Water 15.0 15.0 Cut or Embankment 8.0 60.0 Nearest well or other source 60.0 100.0 of Domestic Water Supply Swimming Pool 3.0 8.0 Water Service Pipes 3.0 8.0 Walks and Drives 2.0 2.0 Large Trees 3.0 3.0 LEACH FIELD DRAINAGE SYSTEM 4.1 The leach field drainage system shall be sited and designed to provide the physical, chemical and biological environment necessary for the wastewater renovation through the soil. Major factors which shall be considered in the design of leach fields include the following: a. Local soil conditions; soil characteristics including texture, structure, stratification, bulk density, grain size distribution and coefficient of permeability. R:\henr5902\sarosdm\userdiA11-9.- .doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD Page 9 of 21 SPECIFICATION Rev.__________2_____A~ug. 1997~ b. Depth of bedrock and presence of bedrock fissures or fractures. c. Saturated soil and high groundwater table; the groundwater table must be a minimum 1 m (3 ft) below the bottom of the leach field trench. d. Surface slope. e. Presence of ponding and/or flood conditions. f. Per capita sewage flows. g. Design life of the system. 4.2 The design of the leach field system shall consider the following biological process- Soil bacteria break down soluble organic pollutants. The physical filtering action of the soil removes suspended particles, including sewage borne bacteria and viruses. This causes the production of slimy films of bacteria on the soil particles in the leach fields. In naturally well drained soils such as sand, sandy loam and loamy textures, the crust (slimy film) impedes the flow of water into the soil horizons and will be unsaturated and aerobic. This results in an increase of the contact time with the soil and ultimately of the treatment efficiency. Clay soil, on the other hand, would be nearly saturated and anaerobic and hence would require greater trench length to achieve a satisfactory treatment. Percolation Test 4.3.1 The percolation characteristics of the soil shall be used to determine the ability of the soil to perform as a leach field. A minimum of four separate tests shall be carried out in four holes spaced unifornly over the proposed leach field. If the test results are not consistent, additional tests in different locations may be required by ESSO. 4.3.2 Leach fields shall consist of conventional trenches and beds, or disposal mounds or a combination thereof based on the geotechnical conditions and field survey information. Table 3 provides a guide for the selection of disposal methods under various site constraints. R:Ahe ncS902NsarosdmkUse.rd iM t.9, .doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT _ ( 3 DISPOSAL INTO DRAINAGE FIELD Page 10 of 21 SPECIFICATION Rev. 2 Aug. 1997 TABLE 3 Site Constraints Soil Penneability Depth to Bedrock Depth to Water Slope Method Table Small Lot ______ ________ _____ _ _ _ _ ~~ ~~~~Size Very Rapid - Slow- Shallow Shallow Rapid Moderate Very Siow and and Deep Shallow Deep 0-5% 5.15% 15% _ __________ Porous No .p_us Trenches X X(" X X X X -X X(2) Beds X X X X X Mounds X X X X X X X X X X X "X" means system can function effectively with that constraint. Notes: 1. Construct only during dry conditions. Use trench configuration only. 2. Flow reduction suggested. Trenches and Beds 4.4.1 Trenches shall be 300 to 900 mm (I to 3 ft.) wide and up to 30 m (100 ft.) or more long. Only one distribution pipe shall be installed per trench at the designed slope with the primary infiltration surfaces on the bottom and side walls of the excavation. The distribution pipe shall be laid with a minimum 150 mm (6 in.) thick bed of washed. graded, crushed rock or gravel, 20 mm to 50 mm (3/4 to 2 in.) in size. This material shall be placed in the trench bottom and levelled true to grade prior to laying the pipe. Aggregate shall be placed around the pipe until only the top centre is stifl visible. 4.4.2 A final check of grade and alignment shall be made to confirm that the designed slope has been met Then additional aggregate shall be placed in the trench so that the lines are covered with a minimum depth of 50 mm (2 in.) above the pipe. The trench shall be backfilled further to grade level with suitable material. 4.4.3 The sizing of trenches and beds is a function of the characteristics of the infiltrative surface. Table 4 shows several soil types, soil percolation rates and french and bed loading rates. However, design rates shall be based on percolation test -results. R:\henfi902Xsarosdrn\userdir%1 1-9-1 .doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT GPEaFICATiON DISPOSAL INTO DRAINAGE FIELD Page 11 of 21 SPECIFICATION Rev. 2 Aug. 1~997 TABLE 4 Soil Type Percolation Trench And Bed Additional Criteria Rate Boftom Area minutes/cm Application Rate (1x2) _____________ _____ cm!day Gravel, 0.4 Not suitable°3 Trenches shall not be used in highly coarse sand permeable soils Coarse to 0.4-2 5 medium sand Fine sand, 2-6 3 loamy sand Sandy loam, 6-12 2.5 lo am_ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Loam, porous 12-14 2 silt loam Silty clay 24-48 1(5) Use of trenches shall be limited to loam, clay exceptional circumstances if loam(4) percolation rates are lower than 24 min/cm. Trenches shall never be used where percolation rate is less than 48 minfcm. Notes: 1. May be suitable estimates for sidewall infiltration rates. 2. Rates based on septic tank effluent from a domestic waste source. A factor of safety may be desirable for wastes of significantly different character. 3. Soils with percolation rates < 0.25 min/cm (1 min./in.) can be used if the soil is replaced with a suitably thick (> 600 mm (2 ft.)) layer of loamy sand or sand. 4. Soils without expandable clays. - 5. These soils may be easily damaged during construction. 4.4.4 As a design guide, Table 5 shows the suggested dimensions of trenches. R:Nhenr5902\sarosdm userdir1 1 .9-1 .doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT O SPECIFiCATION DISPOSAL INTO DRAINAGE FIELD Page 12 of 21 SPECIFICATION Rev. 2 Aug. 1-9-977-1 TABLES Width Length Depth Below Cover Spacing Between (mm) (m) Grade (mm) Thickness Trenches (m) (mm) 300 to 30 450 to 600 ) 150 min. 1.8 minimum (2) 900 Notes: 1. May be deeper if more suitable horizon exist and groundwater table is low. 2. Measured from side wall to side wall; depends on design and on percolation characteristics of the soil. Disposal Mounds 4.5.1 Mounds shall be used in relatively impermeable soils or in areas with shallow water tables or porous bedrock. Disposal mounds shall consist of trenches or beds constructed of suitable fill material placed above the existing grade. Effluent from septic tanks shall be siphoned or pumped into the mounds (usually medium to coarse sand) through distribution networks. 4.5.2 Mounds shall extend beyond the field a minimum of 3m (10 ft.) and enough to prevent seepage out of the sidesand. DISTRIBUTION NETWORK 5.1 To achieve uniform application of effluent over the entire infiltrative surface area depending upon suitability and terrain, either of the two methods described herein shall be adopted. Distribution Box Network (Figure 3) 5.2.1 The system shall use either of two different types of pipes: a. 100 mm (4 in.) diameter PVC pipes having two rows of holes near the invert 45' off vertical centre. The holes shall be 10 to 20 mm (1/2 to 3/4 in.) in diameter and spaced 75 mm (3 in.) apart. 100 mm (4 in.) diameter PVC solid pipes shall be used from the distribution box to the perforated pipes. b. 100 mm (4 in.) diameter PVC drain tiles with 6 to 12 mm (114 to 1/2. in-) joint openings. R: henr59O2\sarosdm\nuserdirM 1-9-1 .doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTEC TANK AND EFFLUEECT O3 DISPOSAL INTO DRAINAGE FIELD Page 13 of 21 SPECIFICATION Rev. 2 Aug. 1997 5.2.2 The basic system design shall be as follows: a. The perforated pipes shall be laid approximately level and the solid pipes shall be sloped depending upon the terrain. b. Effluent flows by gravity from the distribution box through the solid pipes to the perforated pipes or drain tiles. C. The number of pipes used and the distance between them is a function of the characteristics of the soil, percolation rate and the bottom area application rate. d. The 100 mm (4 in.) PVC perforated pipes or drain tiles shall be interconnected by a solid common header of 100 mm (4 in.) PVC pipe and distribution box. e. Outlet inverts from the distribution box shall all be at the same elevation and the inlet invert shall be 25 mm (in.) above the outet inverts. Figure 3 shows an example of this system. Serial Distribution MethodlRelief Line Distribution Network (Figure 4) 5.3.1 This system uses overflow or relief lines between trenches in place of distribution boxes. Similar to the distribution box network in paras. 5.2.1 and 5.2.2, this method also uses a combination of solid 100 mm (4 in.) PVC pipe and perforated 100 mm (4 in.) PVC pipe or open jointed drain tiles. 5.3.2 The basic system design shall be as follows: a. The invert of the overflow section shall be located near the top of the porous media in order to use the maximum capacity of the trench. b. For the gravity system, the invert of the overflow from the first absorption trench shall be at least 100 mm (4 in.) lower than the invert of the septic tank outlet. c. Relief lines shall be separated far enough apart to prevent short circuiting (1.8 m to 3 m (6 to 10 ft.)). d. Pipe fittings for relief lines shall be selected to suit the slope. e. A minimum of 1.8 m (6 ft.) (horizontal) of undisturbed earth is recommended between absorption trenches. f. Distribution pipe in absorption trenches shall extend an equal -distance (approximately) in both directions from the solid interconnection and relief pipes. R:\henrS902\sarosdm\ruerdir%1 -9-1.dco ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD Page 14 of 21 SPECIFlCATION Rev. 2 Aug. 1997 Distribution pipes and trenches shall be level and normally follow slope contours. PERFORMANCE TESTS FOR SEPTIC TANKS 6.1 Hydrotesting shall be used to demonstrate the strength of the tank to resist anticipated external and intemal loads. 6.2 Testing for leaks to determine leakage below the ground water level shall be performed using either vacuum testing or water pressure testing. a. If using vacuum testing, seal the empty tank and apply a vacuum of 50 mm (2 in.) of mercury; the tank shall be approved if the vacuum is held for 60 minutes. b. If using water pressure testing, seal the tank, fill with water and let stand for 24 hours; refill the tank; the tank shall be approved if water level is held for one hour. MATERIALS FOR CONSTRUCTION OF SEPTIC TANK AND LEACH FIELD PIPING Septic Tanks 7.1.1 Septic tanks shall be one of the following: a. Precast or cast-in-place reinforced concrete, watertight, structurally sound and resistant to excessive corrosion and decay. Inlet and outlet pipes shall be sealed with a compound that bonds both the concrete and pipe materials. b. Steel, epoxy or bitumen coated. c. Fibreglass; floatation collars may be required if the groundwater table is high. Piping Materials for Leach Field 7.2.1 Pipes shall be perforated and solid PVC, 100 mm (4 in.) in diameter, (including fittings) in accordance with ASTM 2729. 7.2.2 As an altemate to perforated pipes, 100 mm (4 in.) diameter PVC drain tile with 6 to 12 mm (114 to 1/2 in.) joint openings may be used, as shown in Figure 3. CURTAIN DRAINS 8.1 If required, curtain drains shall be installed to prevent natural (ground) water'seepage R:Ahenr5902\sa rosdrr\userdi4 1 -S- 1.doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT Q DISPOSAL INTO DRAINAGE FIELD Page 15 of 21 SPECIFICATION Rev. 2 1 Aug. 1997 into a leach field. They shall be installed in accordance with ASTM D 2321 or F 449 and be at least 300 mm (1 ft.) deeper than the leach lines, and 2.4 to 3.0 m (8 to 10 ft.) from the leach line. The curtain drain shall be directed to a free outlet. LIFT STATION 9.1 If the depth of the gravity sewage collection system results in a deep, septic tank, a sewage lift (pumping) station may be required to discharge the effluent into the shallow leach field. A typical schematic of a lift station is depicted in Figure 5. 9.2 The lift station may be a pre-fabncated package consisting of the necessary pumps and other equipment ready for installation in a pre-cast concrete chamber. Alternatively, the equipment may be pre-installed in a pre-fabricated steel chamber. 9.3 The equipment required includes a submersible, non-clog type sewage pump. protected steel piping, valves, lifting, pump start-stop by level control and all wiring to a control panel mounted on a post adjacent to the station. 9.4 Two pumps shall be provided (one operating and the second on standby). 9.5 The installation shall facilitate the removal of the pumps through access hatches without entering the station. This shall be accomplished by installing an automatic discharge connection between each pump discharge and piping and two vertical guide bars and a chain for each pump. 9.6 Liquid level regulators (bulbs) shall be provided to control the operation of the pumps in accordance with variations of sewage levels in the pump chamber. 9.7 The chamber shall be sized to allow a minimum cycle of 10 minutes for each pump. 9.8 Pump motors shall comply with ECS 16-7-1. 9.9 The power available on site will be 400 Volts, 3 phase for motor duties up to 150 kW. 9.10 Vehicle access to the station must be provided. CLOSURE OF SEPTIC TANK AND DRAINAGE FIELD SITE 10.1 Before closure of a septic tank and drainage field site can be considered complete, the following items shall be done. a. The septic tank shall be pumped empty. The sludge shall be disposed in a location and manner acceptable to ESSO. RAhenir59M2\sarosdm\userdir\1 1-9.- .doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT ~~~ ~~DISPOSAL INTO DRAINAGE FIELD Page 16 of 21 SPECIFICATION Rev. 2I AugN 199P7g o b. The septic tank shall be removed from the ground, repaired if necessary and reused. The hole shall be replaced with suitable, compacted fill. The topsoil and vegetation shall be replaced and suitable soil erosion mitigation measures shall be employed. c. The ends of all underground pipes shall be properly plugged. R:Ahenr5902\Sar0sdmkuserdir11 I-S-i.doQc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT 0PECIFICATION DISPOSAL INTO DRAINAGE FIELD Page 17 of 21 SPECIF[CATION Rev. 2 Aug. 1997 FIGURE 1 SEPTIC TANK AND SIPHON ARRANGEMENT OVERFLOW WEIR . PRECAST REINE^RCED - - --------EIR . . CONCRETEi SCU16 BAFFLE . EXTENDING FULL WIDTH . cr . _ OF TANK._3-rOTF Dw.r ~~~~~~~~~~~~~~~~~OUTLET FLOW LB~~~~~ B SECTIONAL PLAN A-A MANHOLE OPENINGS FLUSH SCALE: NTS ORASED (TYP.) SIPHON OR PUMP CHAMBER MAY I DETACHED FROM TANK A ~ >~. S ... j .A- Vn 2som (Min-) 1 VENT INLET PIPE -- 1 1~50 Min. TwrL 150 Mlin.| VEN 15 Min ; C = r . 1oC, BUT 2 450mm t 311 ( l UT > 4SOmm _ 00 SCUM BAFFLS§5/t l- t Min. lll/_ v ,,. --.st1 |- * a= 2/ MOFNET LEN } 3 |GTH a21/30 OUTLETTO .DETAIL 1 I [ i NE,T LENGTH |[4 | : DISPOSAL SCALE: NTS -* **-^ -- -t * v '-.~~> .~ | a1 + az =NET LENGTH ALTERNATIVE DIP L.SIPHON CHAMBER-' PIPE INLET SECTION B-B SCALE: NTS NOTES: 1. ALL DIMENSiONS IN ILLUMETRES UNLESS OTHERWISE NOTED. 2. MANHOLE ACCESS SHALL BE PROVIDED TO EACH COMPARTMENT LOCATED TO FACILTATE SERVICING OF THE INLET AND OUTLET. 3. DIP-PIPES MAY BE USED AT INLET AND OUTLET OF TANK INSTEAD OF BAFFLES. THE TOP EDGE SHOULD BE NOT LESS TIHAN 150mm ABOVE THE WATER LINE AND BOTTOM EDGE NOT LES THAN 450mm BELOW T.W.L. SEE DETAIL l). 4. INLET PIPE MAY ENTER SIDE WALL OF TANK IF CONVENIENT. BUT CENTRE LiNE OF PIPE MUST NOT BE MORE THAN 150mm FROM DILET END OF THE WALL. 5. THE SLOPE OF THE INLET PiPE SHOUID BE SUCH THAT INLET VEWLCIY DOES NOT EXCEED 900mnm/s (25mm IN 1800mmrn FOR 100mm DIA. PIPE: 25mm IN 3650mm FOR 150mm DA. PIPE). 6. PROVISION SHOULD BE MADE FOR LESS THAN 300mm OF COVER TO TANK (THiS MAY BE RAISED ABOVE GENERAL GROUND LEVEL WHEN AVAIlABLE FAUL TO DSTWRBUTION SYSTEM iS LUtiIED). 7. A SIPHON OR PUMP SHALL BE USED TO DOSE THE DISPOSAL FIELD WHEN 150 m OR MORE OF DISTRIBUTION PIPE IS REQUIRED. 8. DIMENSION D SHOULD BE ACCORDING TO SIPHON MANUFACTURER-S REQUIREMENTS. S. ADD 230mrn TO DIMENSION C FOR TOTAL INTERNAL DEPTH. 10. INSPECT TANKS ANNUALLY. TANK TO BE CLEANED WHEN THE LEVEL OF THE BoTroM OF THE SCUm IS WTRHIN 75mm. OR THE SURFACE OF THE SLUDGE IS WITHIN 450mm OF THE BOTTOM OF THE OUTLET FITTiNG. R:ecg2sr5 vsa r m1.S-doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT DISPOSAL INTO DRAINAGE FIELD Page 18 of 21 SPECIFICATION IRev. 2 Aug. 1997 FIGURE 2 SEPTIC TANK OUTLET STRUCTURES OUT1LET SCUM BAfFLEa. ElQUID LEVELc TANK OUTLET PIPE GAS DEFLECTION BAFfLE LIQUID LEVEL; UQUIO LEVEL OUTLET TEE OUTLET SCUM BAFFLE GAS DEFLECTION CON'FIGURATION GAS DEFLECTION DEVICE R .\henc59O2'sarcsdrn\userdisU *L-S-1 .doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. . SEPTIC TANK AND EFFLUENT ( D ~~~~DISPOSAL INTO DRAINAGE FIELD Page 19 of 21 SPECIFICATION Rev. 2 Aug. 1997 FIGURE 3 DISTRIBUTION BOX LEACH FIELD FOR LEVELIGENTLE SLOPING SITES ENDS OF RUNS CAPPED 1~~~~~. 1 1 I- If |8 1: -1 itr t -OOnmm DD PVC V jDRpJN4 T]LES 6-12rx44IJ- ": :iJOINT OPENING i : 1 I -f2OR lOOmm DIA.. . DISTRIBUTION BOX PVC PERFORATED .1 FIRMLY SUPPORTED PIPES. IN LEVEL POSITION : INLET ALL PIPE INVERTS AT SAME ELEVATION lOOmm DIA./- _a,PVC PIPES w'' ,;, :- 3-" WATER nGTl&r s1 ioim. ~ ~ ~ ~ ~ I I:~~~~~~~~~~~~~~~~4 MIN. PLAN SROCK. HIGH WATER TABLE OR IMPERVIOUS SOIL CROSS SECTION A- NOTES: 1: AL DIMENSIONS IN MSLLPETPES UNLESS OTERWISE NOTED NOT TO SCALE. Rz\hecrS9C2Ssaros~~~~~m\userdiAt1 ~ ~ .9- ..d_.oc. . ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT OPEClFlcAnoN l DISPOSAL INTO DRAINAGE FIELD Page 20 of 21 SPECIFICATION __REv Aug. 1997- FIGURE 4 SERIAL DISTRIBUTION LEACH FIELD FOR SLOPING SITES FLOW FROM SEPTIC TANK | SOLID PVC PIPE PERFORATED FDISTRIBUTISON PIPE I D (1800-3000mm) DISTRIBUTION PIPE . . . _ _____ ENDS CAPPED DISTRIBUTION PIPE AND SOLID RELIEF IUNE PERFORATED PIPE OR OPEN JOINTED TILE TRENCH TO BE LEVEL (PVC SOLID PIPE) N TO SERVE AS DISTRIBUTION PIPE 1800-3000mm IN LENGTH DISTRIBUTION PIPE -A SOIID PVC PIPE DISTRIBUTION PIPE 4-I - - --- - 1- ----- --------- _ 71 ABSORPTION TRENCHES LSOLID RELIEF LlNE TO FOLLOW CONTOURS (PVC SOLID PIPE) 1800-300Omm IN LENGTHi o _ DISTRIBUTION PIPE SOLID PVC PIPE DISTRIBUTION PIPE a_________ B _ _ _ _ _ _ _ _ =A SOLID RELIEF LINE DISTRIBUTION PIPE DISTRIBUTION PIPE - - - -I f- -- --- - - - - - - - - - 1 ----- PLAN INVERT OF OVERFLOW FROM FIRST ABSORPTION . g 5 / ~~TRENJCH MUST BE AT LEAST 100 LOlfE THAN o = THE INVERT OF THE SEPTIC TANK OUTLET RELIEF PIPE INVERT LEVEL AT ' ELEVATION WHERE PIPE IN ALL JOINTS TIGHT TRENCH IS 3/4 FULL R Z &NORMAL 20mm CRUSEI STONE OR CLEAN GRAN ;i 0g 20mm - 50 mm. 300 SECTION A-A MN. NE: ALL DIMENSIONS IN MILULMETRE~S UNLESS OTHERWIS NOTD NOT TO SCALE. R-.\henc5c,2'sarosdm\userdid11-9-1 .doc ESSO EXPLORATION & ECS 11-9-1 PRODUCTION CHAD INC. SEPTIC TANK AND EFFLUENT D3 DISPOSAL INTO DRAINAGE FIELD Page 21 of 21 SPECIFICATiON Rev. 2 Aug. 1997 FIGURE 5 DEEP SEPTIC TANK AND UFT STATION gLAMDER RUNGS INLEr GRAV'TY SEWER 2 SUBMERSIBLE SEWAGE PUMPS PLA CONTROL PANE CAST IRON FRAME &COVACESS HATCH FORCE MAIN TO N ,4~~~~~~~~~ - c PACKAGE\ SUBMERSILE4C PIU) & GUIDE BR S -UIDEM T R = r E~~~~/-WATER LEVEL ,- FePROTECTEPD§ INLET TEE OR ET TEE OPR REMA O PUMP S bBAFFLE ; U 8BAFFLE x m 1 SETUNG CHME SECONk CHM ULBS\ Z < ; I ; ~~~~~~~~~PACKAGE SUBMERSiBLE PUMF & GUIDE BAR SYSTEM TO PERMrr REMOVAL OF PUMPS WTrHOUT ENTEIRNG MANHOLE R:\henr9OZsrosdm\buserdir\t11 9-1 .doc E C l ESSO EXPLORATION & ECS 1341 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 1 of 30 SPECIFICATION _ Rev. 2 Aug. 1997 Prepared By Reviewed By Approved By Rev. Date Discipline Engineering Project No. Engineer Manager Engineer I Manager 1 Oct 1995 M. GoeUA. Nagy M. Menaes F. Miquel R:1henr590z\sarosd rriaserdt iAt 3-4-1.doc: GH ESSO EXPLORATIONI& ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 2 of 30 SPECIFICATION Rev. 2 Aug- 1997 TABLE OF CONTENTS 1.0 SCOPE .................................................................3 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS ......................................3 3.0 PURPOSE OF SOLID WASTE LANDFILL ......................................4 4.0 SITE SELECTION .....................................4 5.0 DESIGN AND CONSTRUCTION CRITERIA ......................................6 6.0 OPERATING PROCEDURES ..................................... 21 7.0 CLOSURE REQUIREMENTS ...................................... 28 LIST OF TABLES TABLE 2 .......................................8 TABLE 3 ..................................... 22 TABLE 4 ..... 25 Revision Memo 10/1996 Revision 1, Original Issue 811997 Revision 2 Complete revision based on CCS 13-4-1, Rev. 0. R:Ahenr59O2\sarosdm\userdir\13-4.1.doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 3 of 30 SPECIFICATION Rev. 2 Aug. 1997 1.0 SCOPE 1.1 This specification includes the technical requirements for the design, construction and operation of a landfill site to be used for both hazardous and non-hazardous solid waste disposal. The construction includes earthwork, access roads, and installation of a landfill with a composite liner and leachate collection system and monitoring wells. The operation includes maintaining each landfill cell, collecting leachate and monitoring leachate and monitor-well water quality during the Pre-Operation phase. 1.2 A pound sign (#) indicates that ESSO review/approval is required before design and/or construction is finalized or equipment is purchased. 1.3 An asterisk (*) indicates that additional information is provided by ESSO in an addendum to this specification. 2.0 SUMMARY OF ADDITIONAL REQUIREMENTS 2.1 The publications listed in Table 1 are incorporated by reference into this specification. Except as modified by the requirements specified herein, work covered by this specification shall conform to the applicable provisions of these publications. TABLE I SPECIFICATIONS ECS 410-1 Concrete Design and Construction 411-1 Chain Link Fencing 4-100-1 Roads and Area Paving 11-1-1 Water Wells 26-1-3 Environmental Impact Mitigation Specification 26-1-4 Soil Erosion Mitigation Specification GPS 008 Project Safety Requirements 011 Waste Management CODES AND STANDARDS ASTM C136 Sieve or Screen Analysis of Fine & Coarse Aggregate C478 Precast Reinforced Concrete Manhole Sections D422 Test Method for Particle - Size Analysis of Soils. D1140 Test Method for Amount of Material in Soils Finer Than the No. 200 (75-1±m.) Mesh D1557 Laboratory Compaction Characteristics of Soil Using Modified Effort [56,000 ft-lb/ft3 (2700 kN-m/m3)] R:\henrS902\sarosdmluserdit134-l .doc-GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 4 of 30 SPECIFICATION Rev. 2 Aug. 1997 TABLE I (CONrD) ASTM (cont'd) D2216 Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock D3034 PSM Poly (Vinyl Chloride) PVC Sewer Pipe and Fittings (Perforated) D4253 Maximum Index Density and Unit Weight of Soils Using a Vibratory Table D4254 Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density D4318 Test Method for Liquid Limit, Plastic limit, and Plasticity Index of Soils D5084 Test Method for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter D5093 Standard Test Method for Field Measurement of Infiltration Rate Using a Double-Ring infiltrometervwith a Sealed-Inner Ring. USCOE U.S. ARMY CORPS OF ENGINEERS EM 1110 2-1906 Corps of Engineers Manual Standard Methods for the Examination of Water and Wastewater Mary Ann H. Franson, editor, American Public Health Association, 1995 3.0 PURPOSE OF SOLID WASTE LANDFILL 3.1 The solid waste landfill shall be designed, constructed and operated to accept the following: a. Solid wastes approved in the Contractor's Waste Management Plan in accordance with Secfion 30 of the Coordination Procedures and GPS-01 1. b. All domestic and industrial solid wastes from the operating facility during its operating life cycle. c. All potentially hazardous wastes such as batteries and incinerated medical wastes generated during operations and construction. 3.2 The design, construction and operating procedures of the solid waste landfill shall recognize the existence of an incinerator at the site during the operation phase. 3.3 All landfill cells used during the pre-operations phase shall be closed prior to turning care and custody of the facility over to ESSO R:'henr5So2\sarosdrmuserdirl34-I..doc:GH ESSO EXPLORATION & ECS 134-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 5 of 30 SPECIFICATION Rev. 2 Au - 1997 4.0 SITE SELECTION 4.1 Initial Selection Criteria The criteria for the selection of landfill sites shall be as follows: a. Avoid residential areas, wetiand, critical wildlife habitats, drainage courses and areas subject to seasonal flooding. b. Sites shall not be chosen within the 100 year flood plain of a stream, river or take. c. The landfill shall not be located within 500 m (1640 ft.) of an airfield. This restriction is imposed to reduce bird hazard. d. The landfill must be at least 300 m (1,000 ft.) from any non-intermittent water course or other permanent water-body. e. The landfill shall not be constructed within 500 m (1640 ft.) radius of any water supply well. f. The landfill shall not be located within 60 m (200 ft.) of geological fault areas. g. Avoid locations which have unstable subgrades and are likely to provide poor foundation conditions or are threatened by massive earth movements (e.g. landslides). h. The site shall have adequate room to accommodate the volume of wastes, berms, perimeter ditches, buffer zones, space for groundwater monitoring wells and access roads. i. On the basis of hydrogeological investigations, the site shall have a vertical separation between the seasonal high water table and the landfill bottom of greater than 1.5 m (5 ft). j. The site shall not be located in a recharge area of an unconfined aquifer. k. The material that underiies the landfill shall have a hydraulic conductivity of not more than 106 cm/s. 1. The site shall be located in an area where there will not be significant lateral transfer of mobilized contaminants in the groundwater. m. The selected location shall be such that natural erosion or future land use will be unlikely to excavate or expose buried waste and where groundwater is not susceptible to contamination by leaching. #4.2 Final Selection After preliminary selection of altemative landfill sites by Contractor, detailed and site specific geotechnical, hydrological, hydrogeological and environmental R:\henr59O2\sarosdm\userdi1 3-4-I .doc:Gh ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 6 of 30 SPECIFICATION Rev. 2 Aug. 199 investigations shall be carried out which form the basis of the final selection of the most approprate site. Final site location requires ESSO approval. 5.0 DESIGN AND CONSTRUCTION CRITERIA 5.1 Site Preparation and Access Roads 5.1.1 The area inside the operafional-zone fence shall be cleared. Clearing shall include the removal of all trees, bushes, and other vegetation, to within 150 mm (6 in.) above the natural grade. It shall also include the removal of dense growths of ground cover, matted dead vegetation, and rubbish resting on natural grade. Clearing shall also include the specified removal of any existing structures, foundations, buried service piping and conduits. 5.1.2 Areas to be excavated or areas that will have facilities installed over them shall be grubbed. Grubbing shaJI include the excavation and complete removal of tree stumps, also the excavation and removal of all other plant life including root structures, plus rubbish, to a depth not less than 150 mm (6 in) below natural grade. Other minimum grubbing depth criteria supplemental to the 150 mm (6 in) minimum depth below natural grade requirements for grubbing are as follows for the following specific Work areas: a. Drainage ditches shall be grubbed to a depth not less than 300 mm (1 it) beneath the finished sides and bottom. b. Roadway areas shall be grubbed to a depth not less than 900 mm (3 ft) below finished grade but not less than 600 mm (2 ft) below natural grade. c. Embankment slopes shall be grubbed to a depth not less than 300 mm (1 ft) beneath the finished slope. d. Areas for piping between process unit areas limits and ditches, and along roads, shall be grubbed to a depth not less than 600 mm (2 ft) below finished grade but not less than 150 mm (6 in) below natural grade. 5.1.3 All organic material from clearing and grubbing,. including trees, stumps, roots, and brush shall be managed and disposed as specified in ECS 26- - 1-3. 6.1.4 Topsoil shall be stripped and stockpiled as indicated in ECS 26-1-4 and ECS-26-1-3. R:\henTi902\sarosdm\userdi,d3-4.1 doc:GH ESSO EXPLORATION & ECS 13 4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 7 of 30 SPECIFICATION R ev. 2 Au g. 19-9 7 5.1.5 Erosion control measures shall be implemented in accordance with the construcfion drawings and ECS 26-14. Mitigation measures specified in ECS 26-14 shall be installed as soon as practical. The faces of cut and fill slopes, and surface of soil subject to rain, wind, and runoff disturbance shall be protected against erosion unless they are not subject to erosion due to the erosion-resistant character of the material. 5.1.6 An all-weather, gravel access road with a laterite base shall be provided to the landfill site. As a minimum, the access road shall be designed and constructed in accordance with ECS 4-100-1 5.1.7 The landfill site shall be accessible only when operation personnel are on duty. A chain link fence and gates shall be designed and constructed around the entire site in accordance with ECS 4-11-1. Gates shall include provisions for locking. 5.1.8 A minimum 30 m (100 ft.) buffer zone is required between the perimeter fence and the landfill. 5.2 Perimeter Dike and Outer Storm Water Ditch A perimeter dike shall enclose the proposed landfill site. The perimeter dike shall consist of a 6 meter (20 ft.) wide buffer zone including a 3 meter (10 ft.) fire lane and a perimeter ditch to manage the storm water run-on. The finished elevation of the dike shall be set with due consideration to the thickness of compacted clay cap over each landfill cell after it has been completely filled and closed. 5.3 Landfill Area and Excavation 5.3.1 The total volume of wastes to be disposed during the life span of the landfill shall be based on the volume of acceptable solid waste generated by construction personnel and activities during construction as well as any volume requirements stated in the Design Basis Manual. Waste minimization shall be implemented, wherever feasible in order to keep the landfill area to an absolute minimum. #5.3.2 All excavation material shall be processed and separated. Material meeting the grain size distribution indicated in Table 2 shall be retained and stockpiled for daily cover material. Those materials which are not needed for backfill or are unsuitable for daily cover shall be disposed of by the Contractor at a location approved by ESSO. R:U>enrSO2%sarosdm\userdi1 3-4-1 .doc:GH ESSO EXPLORATION & ECS 134-1 PRODUCTION CHAD INC_ SOLID WASTE LANDFILL - Page 8 of 30 SPECIFICATION Rev. 2 Aug. 1997 TABLE 2 Cover Material Gradation SIEVE SIZE PERCENT PASSING 12 mm (112 in.) 100 5 mm (No. 4) 90-100 2 mm (No. 10) 45-80 0.075 mm (No. 2000 8-98 Clay (0.002 mm) 8-50 5.3.3 All excavations shall be kept free of standing water at all times. Dewatering equipment such as pumps and hoses shall be provided and operated by Contractor to remove water from excavated areas. 5.4 Side Slope of Landfill and Berm Sides Safe side slopes shall be constructed. A slope stability analysis shall be performed for both excavated side slopes and above-ground embankments to verify the structural integrity of a cut slope or berm. The design configuration shall be evaluated for its stability under all potential hydraulic and loading conditions. 5.5 Liner Design and Construction 5.5.1 A non-hazardous landfill shall have 300mm (1 ft.) of protective soil over a leachate collection system which shall overlie a composite liner as defined in 5.5.3. 5.5.2 A hazardous landfill shall have 300mm (1 ft.) of protective soil over a leachate collection system which overlies a minimum 0.75 mm (30 mil.) Flexible Membrane Hner (FML). FML components consisting of High Density Polyethylene (HDPE) shall be at least 1.5 mm (60 mil) thick. The FML shall overlie a secondary leachate collection system. The secondary leachate collection system shall overlie a composite liner as defined in 5.5.3. 5.5.3 For purposes of this specification, "Composite Liner' means a system consisting of two components; the upper component must consist of a minimum 0.75 mm (30 mii) Flexible Membrane Liner (FML) and the lower component must consist of at least a 600 mm (2 ft) layer of compacted soil with a hydraulic conductivity of no more than 1X10-7 cm/sec (3.94x104 in/sec). FML components consisting of High Density Polyethylene (HDPE) shall be at least 1.5 mm (60 mil) thick. The FML component must be installed in direct and uniform contact with the compacted soil component. R:ThenrS9O2\sarosdm\userdiA13-4.1 .doc:GFS ESSO EXPLORATiON & ECS 1341 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 9 of 30 SPECIFICATION R ev. 2 A u .-1-99-7 The panel layout plan shall be made in advance so that travel of heavy equipment on the liner can be avoided. Vehicles shall not be allowed on completed liners. Seaming of panels shall be completed in accordance with manufacturer's recommendations. 5.5.4 If groundwater is encountered in disposal excavations, or in cases where excavations extend below the seasonal high-water table, material with a weight equivalent to 300 mm (1 ft.) of compacted clay liner for every 600 mm (2 ft.) of static water head shall be used as a basis for the construction of a liner between the deposited solid waste and the groundwater. The total thickness of this liner shall consist of no less than 900 mm (3 ft.) of soil with a permeability coefficient of no more than 1x10-7 CM/Sec (3.94x10- 8 infsec), a liquid limit of no less than 30, a plasticity index of no less than 15, and a percent passing Number 200 sieve of no less than 30. Pressure release systems may be used to reduce the amount of liner support required. 5.5.5 The subgrade for placement of the clay portion of the composite liner shall be compacted in accordance with the following standards: a. Cohesive soils - 95 percent of the Modified Maximum Proctor Dry Density (MMPDD) in accordance with ASTM D1557. b. Non-cohesive soils - 80 percent of relative density per ASTM D4253 and ASTM D4254. 5.5.6 Material for the clay portion of the composite liner shall be uniform with clods, rocks, and stones no larger than 25 mm (1 in.) and that total no more than 10% by weight Disking and filling of the material shall be performed as required to break up large clods. In all cases, soil clods shall be reduced to the smallest size necessary to achieve the coefficient of permeability reported by the testing laboratory and to destroy any macrostructure evidenced after the compaction of the clods under density- controlled conditions. Rock content shall not be a detriment to the integrity of the overlaying geomembrane. 5.5.7 The liner soil material shall be placed in lifts not exceeding 150 mm (6 in.). The surface of the previous lift shall be scarified before the next layer is added. Liner soil material shall not be compacted with a bulldozer or any track-mobilized equipment unless it is used to pull a pad-footed or prong- footed roller. Each new lift shall be fully compacted to the previous lift to form a monolithic unit. The liner soil material shall be compacted to 97% of the MMPDD according to ASTM D1557. R: henr5gO2%sarosdmtuserdirtt34-1.doc:GH ESSO EXPLORAllON & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 10 of 30 SPECIFICATION Rev. 2 Aug. 199~77 #5.5.8 Unless Alternate construction procedures are approved in writing by ESSO, all constructed liners shall be keyed into an underlying formation of sufficient strength to ensure stability of the constructed lining. 5.6 High Permeability Sand Layer for Drainage A highly permeable sand layer shall be placed over the composite liner. The thickness of the layer shall be such that it provides a maximum of 300 mm (12 in.) of leachate head above the liner. The sand drainage layer shall have a minimum slope of 2%. The drainage layer serves two functions: a. Drain the leachate away from the underside of the waste. b. Protect the composite liner. 5.7 Leachate Collection System 5.7.1 The leachate collection system shall be designed to maintain less than 300 mm (12 in.) depth of leachate or "head' above the liner during the operating life of the landfill and through the closure and post closure periods. 5.7.2 The leachate collection and removal systems shall be: a. constructed of materials that are chemically resistant to the leachate expected to be generated, b. built of sufficient strength and thickness to prevent collapse under the pressures exerted by overlaying wastes, waste cover materials, and by any equipment at the landfill; and c. designed and operated to function through the scheduled closure period of the solid waste landfill. 5.7.3 The leachate collection system shall consist of a number of perforated pipes (as per ASTM D3034, if the criteria of 5.7.2 are satisfied), with protective filter wrapping material, laid into the sand drainage layer. 5.7.4 The leachate collection system shall be designed and installed with the following characteristics: a. A trench shall be provided for the perforated pipes with 150 mm (6 in.) depth of cover of sand over the pipe. b. The drain pipes shall have not less than 2% slope. c. Size and horizontal spacing of the drain pipes shall be sufficient to control leachate levels to within the limits specified above. R:\henrS5920sarmsdmXuserdirA13-4-1 . doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC SOLID WASTE LANDFILL Page 11 of 30 SPECIFICATION Rv2 A 19 d. The perforated pipe shall be wrapped in a woven polyethylene fabric such as Nicolon #66339, manufactured by Nicolon B.V., or equal as approved by ESSO. e. Leachate collection lines that penetrate the liner shall have an antiseep collar. A minimum of 1.5m (5 ft) of compacted clay shall be placed around the collar in all directions. f. Pipe materials shall be clean and free of defects when placed in trench. The Contractor shall not allow heavy equipment to travel over the newly installed leachate pipe during construction. g. Collection sumps shall be provided to capture leachates for treatment. Separate sumps shall be provided for hazardous and non-hazardous landfills. Separate sumps shall be provided for primary and secondary leachate collection systems in the hazardous landfill h. Collection sumps shall be sized to collect the maxiimum volume of leachate expected during a leachate monitoring period specified in the "Operating Procedures" Section 6.0 of this specification. i. The collection sump shall be a water-tight concrete structure with a water-tight, chemical-resistant liner. The design and construction of the collection sump shall be in accordance with ECS 4-10-1. 5.8 Run-On and Run-Off Control 5.8.1 Run-on control prevents rain water from flowing into the active portion of the landfill. Run-on control structures such as ditches, dikes and culverts shall be capable of preventing flow on to the active portion of the landfill during peak discharge from at least a 25 year storm. 5.8.2 Run-off control is the management of precipitation which falls on the landfill site so as to minimize the amount of rain water that gets in contact with waste or leachate. The run-off management system shall collect and control at least the water volume resulting from a 24-hour, 25-year storm. This shall be achieved in either of two ways: a. Keeping the active landfill cells small and by providing adequate grading so that run-off is controlled and diverted away from the working area. b. Collecting and discharging run-off from the inactive portion of the landfill as storm water, thus reducing the overall leachate volume to be treated. R:\henrS902\sarosdm\userdi,d 3-4-1 .doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOUD WASTE LANDFILL Page 12 of 30 SPECIFICATION Re.2 Au. 199 5 8.3 For erosion control, up-gradient and down-gradient ditches, berms, rip rap, pavements or combinations thereof shall be used as necessary to achieve run-off and run-on control. 5.8.4 Collection and holding facilities (e.g., sumps or basins) associated with run-on or mn-off control system must be emptied or otherwise managed expeditiously after storms to maintain design capacity of the system. 5.9 Preparation of Landfill Cells One landfill cell of each landfill type (hazardous and non-hazardous) shall be opened at a time. The bottom of each cell shall be sloped for drainage away from the waste material. A temporary berm of approximately 0.6m to 0.9m (2 ft. to 3 ft.) in width shall be installed for isolation from previous cells. 5.10 Gas Venting System A minimum of one passive gas vent shall be provided per cell to prevent the build- up of gas pressure beneath the cover. #5.11 Soils and Liner Quality Control Plan Before landfill construction begins, Contractor shall have an ESSO approved Soils and Liner QuaTity Control Plan (SLQCP). The SLQCP must be included in the Site Development Plan to provide operating personnel adequate procedural guidance for assuring continuous compliance with groundwater protection requirements. The plan shall specify construction methods employing good engineering practices for compaction of clay soils to form a liner as well as the installation and testing of an FML. Quality control testing and reporting shall also be discussed. The SLQCP shall include the following information: a. Proposed dewatering plans, where applicable. b. Constructed liner details, where applicable shall be depicted on cross-sections of a typical trench showing the slope, widths, and thickness for compaction lifts. The amount of compaction shall be expressed as a percentage of a predetermined laboratory density. c. Soil and liner quality control testing procedures, including sampling frequency. All field sampling and testing, both during construction and after completion, shall be performed by the Contractor acting in compliance with the provisions of local govemment regulations and project environmental and quality control standards. R:\henfS02\sarcsdm\userdit 3.4-.1 doec:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. _ SOLID WASTE LANDFILL Page 13 of 30 SPECIFICATION Rev. 2 Aug. 1997 5.12 Soil and Uner Testing Soil liner quality control testing frequencies and procedures shall be in accordance with the following: 5.12.1 All field sampling and testing, both during construction and after completion of the lining, shall be performed by a qualified professional experienced in geotechnical engineering and/or engineering geology, or under his direct supervision. 5.12.2 All liners shall have continuous on-site inspection during construction by the Contractor. 5.12.3 Clay liners density shall be expressed as a percentage of a maximum dry density based on a compaction test. The clay liner, after compaction, shall be proven by soils laboratory testing to provide a coefficient of permeability of 1x10-7 cm/sec (3.94x1048 in/sec) or less. #5.12.4 The SLQCP shall define the frequency of testing for coefficient of permeability, sieve analysis, Atterberg limits, density, moisture content and thickness verification. These frequencies shall be expressed in numhers of tests per specific area of liner per lift or specific thickness of liner, unless an attemate frequency is approved by ESSO. #5.12.5 Unless othenrise approved by ESSO, all soil tests performed on any in- situ or constructed soil liners shall be in accordance with the following standards: a. Laboratory permeability tests shall be run using tap water or 0.05N solution of CaSO4 and not distilled water. All test data must be submitted on permeability tests regardless of test method used. At a minimum, the calculations of the last data set reported for each sample and the resultant coefficient of permeability shall be reported as supporting data. Tests shall be either constant head with back pressure (Appendix VII of EM 1110-2-1906; or ASTM D5084) or falling head (Appendix VIl of EM 1110-2-1906). b. Sieve analysis with +1,200, to -200 sieves (ASTM D422 or ASTM Dl 140, as applicable). c. Atterberg limits (ASTM D4318). d. Moisture-density relations (ASTM D1557). e. Moisture content (ASTM D2216). R:\henS5902\sarosdm\userdir134-1 .doc.GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 14 of 30 SPECIFICATION Rev. 2 Aug. 1997 5.i2.6 All soils used as constructed liners shall have the following minimum values verified by testing in a soils laboratory: a. plasticity index equal to or greater than 30; b. percent passing 200 mesh sieve (-200) equal to or greater than 30%; c. percent passing 25mm (1 in.) screen equal to 100%; d. coefficient of permeability less than or equal to 1x10-7 cm/sec (3.94x10- 8 in/sec.). #5.12.7 Permeability tests for providing the suitability of soils to be used in constructing clay liners shall be performed in the laboratory using the procedures and guidance of 5.12.5(a). Field quality control must be provided by field density tests based on predetermined moisture-density compaction curves, Atterberg limits, and laboratory permeabilities of undisturbed field samples of compacted liner soils, unless an alternate plan is approved by ESSO. #5.12.8 Field permeability testing of in situ soils or constructed soil liners shall be in accordance with ASTM D5093 for those soil liners which are in the floor of the excavation and a suitable variation approved by ESSO for the sidewalls. 5.12.9 Soil and liner density shall be expressed as a percentage of the maximum dry density and at the corresponding optimum moisture content specified as appropriate by an engineer experienced in geotechnical engineering. These soils, after compaction, shall upon testing either in the laboratory or as a test pad in the field demonstrate a coefficient of permeability no greater than 1x107 cm/sec (3.94x104 in/sec.). 5.12.10 All quality control testing of soil liners shall be performed during the construction of the liner. In no instance shall any quality control field or laboratory testing be undertaken after completion of liner construction, except for that testing which is required of the final constructed lift, confirmation of liner thickness, or cover material thickness. 5.12.11 Afl soil testing and evaluation of either in situ soil or constructed soil liners shall be complete prior to installing the leachate collection system. 5.13 Soils and Liner Evaluation Report (SLER) and Flexible Membrane Liner Evaluation Report (FMLER) #5.13.1 Prior to the disposal of solid waste in any trench, or on any area, excavation, or unprotected surface, a SLER and a FMLER shall be R:\ben,s9O2>sarosdrnXuserdk\1 3-4.1 .dox:GI ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 15 of 30 SPECIFICATION Rev. 2 Au. o 1997 prepared by Contractor and submitted to ESSO for approval. Each SLER shall be prepared in accordance with the approved SLQCP. Any deviation from an approved SLQCP shall have prior written approval from ESSO. The SLER and FMLER shall report and summarize the results of tests performed to satisfy the requirements of the SLQCP. Any deficiencies found and remedial actions taken to bring the liners into compliance shall be noted. #5.13.2 Markers shall be placed on site at the landfill facility so that all disposal areas for which a SLER has been submitted and approved by ESSO are readily deterninable. Such markers are to provide site workers immediate knowledge at all times of the extent of approved disposal areas. These markers shall be located so that they are not destroyed during operations. #5.13.3 Contractor shall provided sufficient documentation to ESSO to assure that the potential for contamination of waters is minimized. If ESSO determines that the SLER is incomplete or that the test data provided are insufficient to support the evaluation conclusions, additional test data or other information may be required, and use of the trench or disposal area shall not be allowed until such additional data are received, reviewed, and approved. Each SLER shall be signed by the Contractor. 5.13.4 The surface of a constructed soil liner should be covered with a layer of solid waste within a period of six months to mitigate the effects of surface erosion and rufting due to traffic. Liner surfaces not covered with waste within six months shall be checked by the Contractor, who shall then submit a letter report on its findings to ESSO. Any required repairs shall be performed promptly. A new SLER shall be submitted on the new construction for all liners that need repair due to damage. #5.14 Groundwater Monitoring Systems A groundwater monitoring system shall be installed that consists of a sufficient number of monitoring wells, installed at appropriate locations and depths, to yield representative groundwater samples from the uppermost aquifer, defined as the geologic formation nearest the natural ground surface that is an aquifer. This includes lower aquifers that are hydraulically interconnected with this aquifer within the facility's propeYty boundary. The design of the groundwater monitoring system, including the number, spacing, and depths of monitoring wells or other sampling points, shall be certified by a qualified groundwater scientist The design shall be based on site specific technical information that must include a thorough characterization of: RA\henr5902sa rosd m\userdiA 3.4.1 .doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD [NC. SOLID WASTE LANDFILL Page 16 of 30 SPECIFICATION Rv2 A 19 sPEclFicAnoN ~~~~~~~~~Rev. 2 Aug. 1997 a. aquifer thickness; b. groundwater flow rate; c. groundwater flow direction including seasonal and temporal fluctuation in flow, effect of site construction and operations on groundwater flow direction and rates; d. and thickness, stratigraphy, lithology, and hydraulic characteristics of saturated and unsaturated geologic, and fill material overlying the uppermost aquifer, matenals of the uppermost aquifer, and materials of the lower confining unit of the upperrnost aquifer. A geologic unit is any distinct or definable native rock or soil stratum. Background wells shall be installed to allow determination of the quality of background groundwater that has not been affected by leakage from a unit. A determination of background quality may include sampling of wells that are not hydraulically upgradient of the waste management area if hydrogeologic conditions do not allow the Contractor to determine which wells are hydraulically upgradient. Altematively, sampling at other welis can be performed if it will provide a be;ter indication of background groundwater quality than is possible from upgradient wells. The downgradient monitoring system shall include monitoring wells installed to allow determination of the quality of groundwater passing the relevant point of compliance. The point of compliance is defined as the vertical surface located no more than 500 feet from the hydraulically downgradient limit of the waste management unit boundary, extending down through the uppermost aquifer underlying the landfill area, and located on land owned by ESSO. The final design of the groundwater monitoring system shall be submitted to ESSO for approval. The downgradient monitoring system shall be installed to ensure the detection of groundwater contamination in the uppermost aquifer. 5.15 Monitoring Wells Monitoring well installation and development shall be supervised by a qualified geologist or engineer. #5.15.1 Drilling Monitoring wells shall be drilled by a method that shall allow installation of the casing, screen, etc., and that shall not introduce contaminants into the borehole or casing. Drilling techniques used for boring shall take into R:Ahem5902\sarosd mr\4serd i rA 34- .doc: GH ESSO EXPLORATION & ECS 134-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 17 of 30 SPECIFICATION Rev. 2 Aug. 1997 account the materials to be drilled, depth to groundwater, total depth of the hole, adequate soil sampling, and other such factors that affect the selection of the drilling method. If any fluids are necessary in drilling or installation, then clean, treated water shall be used. Other fluids shall be approved in writing by ESSO before use. Chemical analysis of the water used shall be provided to ESSO with the monitoring well report. The diameter of the boring shall be at least 100 mm (4 in.) larger than the diameter of the casing. When the boring is in hard rock, a smaller annulus may be submitted to ESSO for approval. During drilling of the monitoring well, a log of the boring shall be made by a qualified geologist or engineer. 5.15.2 Casing The well casing shall be: 50 to 100 mm (2 to 4 in.) in diameter, NSF- certified PVC schedule 40 or 80 pipe, flush-thread, screw joint (no glue or solvents); polytetrafluoroethylene (PTFE, such as Teflon) tape or 0-rings in the joints; no collar couplings. The top of the casing shall be at least 600 mm (2 ft.) above ground level. Where high levels of volatile organic compounds (VOC's) or corrosive compounds are anticipated, stainless steel or PTFE casing and screen may be used, subject to approval by ESSO. 100 mm (4 in.) diameter casing is recommended because it allows larger volume samples to be obtained and provides easier access for development, pumps, and repairs. The casing shall be cleaned and packaged at the place of manufacture; the packaging shall include a PVC wrapping on each section of casing to keep it from being contaminated prior to installation. The casing shall be free of ink, labels, or other markings. The casing (and screen) shall be centered in the hole to allow installation of a good filter pack and annular seal, using appropriately placed centralizers. The top of the casing shall be protected by a threaded or slip-on top cap or by a sealing cap or screw-plug seal inserted into the top of the casing. The cap shall be vented to prevent buildup of methane or other gases. 5.15.3 Well Screen The screen shall be compatible with the casing and shall be of the same material. The screen shall not involve the use of any glues or solvents for construction. A wire-wound screen is recommended to provide maximum inflow area. Field-cut slots are not permitted for well screen. Filter cloth shall not be used. A blank-pipe sediment trap, typically 300 to 600 mm (1 K\O0837-787.012\FINAL DOCUMENTATION'Final Engfish\EMPChad Vot 2 - Specs\ECS 13-4-i.doczDMJ ESSO EXPLORATION ECS 134-1 PRODUCTION CHAD (NC. SOLID WASTE LANDFILL ( 3 ~~~~~~~~~~~~~~Page 18 of 30 SPECIFICATION Rev. 2 Aug. 1997 to 2 ft) shall be installed below the screen. A bottom cap shall be placed on the boftom of the sediment trap. The sediment trap shall not extend through the lower confining layer of the water-bearing zone being treated. Screen sterilization methods are the same as those for casing. Selection of the size of the screen opening shall be performed by a person experienced with such work and shall include consideration of the distribution of particle sizes both in the water-bearing zone and in the filter pack surrounding the screen. The screen opening shall not be larger than the smallest fraction of the filter pack. 5.15.4 Filter Pack The filter pack, placed between the screen and the well bore, shall consist of pre-packaged, inert, clean, silica sand or glass beads; it shall extend from 300mm to 1200mm (1 ft. to 4 ft.) above the top of the screen. Open stockpile sources of sand or gravel are not permitted. The filter pack usually has a 30% finer grain size that is about 4 to 10 times larger than the 30% finer grain size of the water-bearing zone; the filter pack shall have a uniformity coefficient less than 2.5. The filter pack shall be placed with a tremie pipe to ensure that the material completely surrounds the screen and casing without bridging. The tremie pipe shall be cleaned prior to installing the first well and before each subsequent well. 5.15.5 Seals The annular seal shall be placed on top of the filter pack and shall be at least 600 mm (2 ft.) thick. It shall be placed in the zone of saturation to maintain hydration. The seal shall be composed of, in order of preference, coarse-grain sodium bentonite, coarse-grit sodium bentonite, or bentonite grout. Special care shall be taken to ensure that fine material or grout does not plug the underlying filter pack. Placement of a few inches of pre- packaged clean fire sand on top of the filter pack shall be used to prevent migration of the annular seal material into the filter pack. The seal shall be placed on top of the filter pack with a clean tremie pipe to ensure good distribution and shall be tamped with a clean rod to determine that the seal is thick enough. The bentonite shall be hydrated with clean water prior to any further activities on the well and left to stand until hydration is complete (8 to 12 hours, depending on the grain size of the bentonite). If a bentonite-grout (without cement) casing seal is used in the well bore, then it may replace the annular seal. A casing seal shall be placed on top of the annular seal to prevent fluids and contaminants from entering the borehole from the surface. The R:Thenr59O2\sarosdm\userdir\13-4.1 .doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOUD WASTE LANDFILL Page 19 of 30 SPECIFICATION Rev. 2 Aug .1997 casing seal shall consist of a commercial bentonite grout or a cement- bentonite mixture. Driling spoil, cutting, or other native materials are not permitted for use as a casing seal. Quick-setting cements are not permitted for use because contaminants may leach from them into the groundwater. The top of the casing seal shall be between 1500 mm and 600 mm (5 ft. and 2 ft) from the surface. 5.15.6 Concrete Pad Concrete, with a compressive strength of 25 Mpa (3625 psi), shall be placed from the top of the casing seal (600 to 1500 mm (2 to 5 ft.) below the surface) continuously to the top of the ground to form a pad at the surface. This formed surface pad shall be at least 150 mm (6 in.) thick and not less than 1200 mm (4 ft.) square or 1500 mm (5 ft.) in diameter. The pad shall contain sufficient reinforcing steel to ensure its structural integrity in the event that soil support is lost. The top of the pad shall slope away from the well bore to the edges to prevent ponding of water around the casing or collar. 5.15.7 Protective Collar A steel protective pipe collar shall be placed around the casing "stickup" to protect it from damage and unwanted entry. The collar shall be set at least 300 mm (1 ft.) into the surface pad during its construction and should extend at least 75 mm (3 in.) above the top of the well casing (and top cap, if present). The top of the collar shall have a lockable hinged top flap or cover. A sturdy lock shall be installed, maintained in working order, and kept locked when the well is not being bailed/purged or sampled. The well number or other designation shall be marked permanently on the collar; including the total depth of the well and its elevation on the collar. #5.15.8 Protective Barrier Where monitoring wells are likely to be damaged by moving equipment or are located in heavily traveled areas, a protective barrier shall be installed. A typical barrier is three or four 150 mm (6 in.) to 300 mm (12 in.) diameter pipes set in concrete just off the protective pad. The pipes can be joined by pipes welded between them, but consideration must be given to well access for sampling and other activities. Separation of such a pipe barrier from the pad means that the barrier can be damaged without risk to the pad and well. Other types of barriers may be approved by ESSO. R:Ahenr6902\sarosdm\userdi1 34-1 .doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 20 of 30 SPECIFICATION ._ Rv2 AuL .1997 #5.15.9 Unusual Conditions Where monitoring wells are installed in unusual conditions, all aspects of the installation shall be submitted to ESSO in writing in advance for their consideration. Such aspects include, for example, the use of cellar-type enclosures for the top-well equipment or multiple -completions in a single hole. 5.15.10 Well Development After a monitoring well is installed, it shall be developed to remove artifacts of drilling (clay films, bentonite pellets in the casing, etc.) and to open the water-bearing zone for a maximum flow into the well. Development should continue untii all of the water used or affected during drilling activities has been removed and field measurements of pH, specific conductance, and temperature have stabilized. Failure to develop a well properly may mean that it is not properly monitoring the water-bearing zone or may not yield adequate water for sampling even though the water-bearing zone is prolific. 5.15.11 Location and Elevation Upon completion of a monitoring well, the location of the well and all appropriate elevations associated with the top-well equipment shall be surveyed. The elevation shall be surveyed to the nearest 0.003 m (0.01 ft.) above mean sea level (with year of the sea-level datum shown). The point on the well casing for which the elevation was determined shall be permanently marked on the casing. The location shall be given in terms of the latitude and longitude at least to the nearest tenth of the second or shall be accurately located with respect to the landfill grid system. 5.15.12 Reporting Monitoring well installation and construction details shall be completed and submitted to ESSO within 30 days of well completion. A copy of the detailed geologic log of the boring, any particle size or other sample data from the well, and a site map drawn to scale showing the location of all monitoring wells shall be submitted to ESSO. R:Nhen5G02g5arosdmW userdirV 3-4-1.doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOUD WASTE LANDFILL Page 21 of 30 SPECIFICATION Rev. 2 A-ug1-9-9-7 *5.15.13 Damaged Wells Any monitoring well that is damaged to the extent that it is no longer suitable for sampling shall be reported to ESSO who shall make a determination about whether to repair or replace the well. #5.15.14 Plugging and Abandonment Any monitoring well that is no longer used shall be properly plugged and abandoned. No abandonment shall take place without prior authorization in writing by ESSO. Procedures for abandonment shall be as given in ECS 11-1-1. 6.0 OPERATING PROCEDURES The landfill operation performed by Contractor, shall consist of placing, spreading and compacting solid waste materials approved for landfill disposal in Contractor's Waste Management Plan in landfill cell trenches in uniform layers separated by layers of cover material. After construction activffies have been completed, the landfill cells used during the pre-operations phase will be capped and closed. The landfill site will remain open and will continue to serve as the disposai area for solid wastes generated by the fixed facilities personnel during operations. 6.1 Health and Safety The disposal site shall be operated in such a manner as to protect the health and safety of personnel associated with the operation. The Contractor shall instruct personnel as to standard procedures for maintaining safety in accordance with GPS-008 and Section 22 of the Coordination Procedures. In addition, the following measures shall be implemented: a. Personal safety devices and gear shall be provided by the Contractor to facility personnel. b. Safety and waming devices shall be provided on all equipment used to spread and compact waste or cover material. c. The Contractor shall take appropriate steps to prevent and control on site populations of disease vectors using proper compaction and daily cover procedures, and the use of other approved methods as needed. d. Litter and other windblown material shall be collected on a regular basis and returned to the active disposal area or working face as necessary to minimize unhealthy, unsafe, or unsightly conditions. e. The working surfaces of all equipment that come in contact with wastes shall be washed down on a regular basis. Wastewaters shall not be allowed to R:\hen,5902\sarosdm\userdir13-4-1l.doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 22 of 30 SPECIFICATION Rev. 2 Aug .1997 accumulate on site without proper treatnent to prevent the creation of odors or an attraction to disease vectors. f. The Contractor shall make provisions to extinguish any fires in 'wastes being delivered to the site or which occur at the working face or. within equipment or personnel facilities. 6.2 Placement of Solid Waste Material Waste materials shall be trucked to the landfill and placed in the appropriate landfill cell trenches (based on waste type). The waste shall be compacted on slopes less than 3:1 (H:V) in lifts of 600mm (2 ft.) or less by three to five passes of tracked equipment. Solid waste handling equipment shall on any operating day be capable of performing the following functions: a. Spreading the waste materials in an uncompacted layer with a maximum thickness of 600mm while confining it to the smallest practicable area, b. Compacting the spread waste material to the smallest practicable volume, and c. Placing, spreading and compacting the cover material over a waste layer by the end of the day's operation. 6.3 Daily and Intermediate Cover Soil cover shall be placed to control insects, rodents, scavenging by birds, blowing litter, flies, odors and to provide better access to the working face. The intent is to ensure that deposition of waste will not adversely affect the environment or public health. A soil cover (minimum 150 mm (6 in.) thickness) shall be placed and compacted daily. Acceptable cover material shall meet the criteria given in Table 2. An intermediate soil cover (minimum 300 mm (12 in.) thickness) shall be placed and compacted on areas which will not receive additional wastes for longer periods. The cover material for each layer of waste shall be spread and compacted in accordance with Table 3. TABLE 3 Depth of Cover Material TYPE OF COVER DAILY INTERMEDIATE FINAL [Period of Site [P < I week] (week < P < 1 year] [P > 1 year] Inactivity (P)] Compacted 150 mm 300 mm 600 mm Thickness R:\henr59O2\sarosdmluserdi1A-.1 .doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL * Page 23 of 30 SPECIFICATION Rev. 2gu. 1997 6.4 Leachate Collection and Disposal The leachate sumps shall be monitored by Contractor for level of accumulated liquid and leachate quality. Sumps shall be monitored on a regular basis to ensure that overflowing does not occur. The leachate quality shall be monitored semi- annually. The leachate shall be extracted from the sumps and disposed of by the Contractor in its sewage treatment plant. If necessary, Contractor shall adjust leachate pH and treat to remove heavy metals and excess salts that would not be compatible with the sewage treatment design parameters and effluent quality before sending the leachate to its sewage treatment system. The leachate collection system must be properly maintained on an annual basis (or more often, as necessary). The leachate lines shall be cleaned out by the Contractor and the sump pump inspected once a year. 6.5 Groundwater Monitoring The groundwater monitoring program shall include consistent sampling and analysis procedures that are designed to ensure monitonng results that provide an accurate representation of groundwater quality at the background and downgradient wells. The Contractor shall notify ESSO promptly (within 1 day) in writing of changes in site construction or operation or changes in adjacent property that affect or are likely to affect the direction and rate of groundwater flow and the potential for detecting groundwater contamination from the solid waste landfill that may require the installation of additional monitoring wells or sampling points. #6.5.1 Groundwater Sampling and Analysis Plan Contractor shall submit a groundwater sampling and analysis plan (GWSAP) to ESSO for review and approval prior to commencement of sampling and shall maintain a current copy in the operating record. The GWSAP shall: a. include procedures and techniques for sample collection, sample preservation and shipment, analytical procedures, chain-of-custody controls, quality assurance, and quality control; b. provide for measurement of groundwater elevations at each sampling point prior to bailing or purging. Measurement at an event shall be accomplished over a period of time short enough to avoid temporal variations in water levels. Sampling at each event shall proceed from the point with the highest water-level elevation to those with successively lower elevations unless contamination is known to be R :henrS90Z,sarosdmk,serdiA 34.1. doc:GH ESSO EXPLORATION & ECS 134-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 24 of 30 SPECIFICATION Page2 Au .9 present, in which case wells not likely to be contaminated shall be sampled prior to those that are known to be contaminated unless an altemative procedure is approved by ESSO; and c. include sampling and analytical methods that are appropriate for groundwater sampling and that accurately measure hazardous consfituents and other monitoring parameters in groundwater samples. The number of samples to be collected to establish groundwater quality data shall be consistent with the appropriate statistical procedures for determination of evidence of contamination. 6.5.2 Groundwater Sampling and Analysis Groundwater samples shall not be field-filtered prior to laboratory analysis. The sampling procedures shall be protective of human health and the environment and appropriate for generation of statistically significant data. Contractor shall establish background groundwater quality in hydraulically upgradient wells or in background wells for each of the monitoring parameters or constituents required in the ground monitoring program for a solid waste landfill. Downgradient groundwater data shall not -be adjusted by subtracting background groundwater data. The Contractor shall determine within 7 calendar days after completing sampling and analysis whether or not there is evidence of a statistically significant change from background values for each constituent required in the groundwater monitoring program for the solid waste landfill. In determining if there is evidence of a statistically significant change from background, the Contractor shall compare the groundwater quality of each tested constituent at each monitoring well or other sampling points to the background value of that constituent. *6.5.3 Constituents to be Monitored Compounds that groundwater samples shall be tested for include those listed in Table 4, at a minimum. ESSO may delete any of the constituents listed in Table 4 if it can be documented that the removed constituents are not reasonably expected to be in or derived from the waste contained in the landfill. Contractor may also petition ESSO for removal of constituents from the list if it believes these conditions are met. Parameters shall be tested using methods in Standard Methods for the Examination of Water and Wastewater (Mary Ann H. Franson, editor, R:\henr59O2\sarosdrnuserdiri13-4.1 .doc:GH ESSO EXPLORATION & ECS 134-1 PRODUCTION CHAD INCE SOLID WASTE LANDFILL Page 25 of 30 SPECIFICATION -Rev.2 Au 1997 Amercan Public Health Association, 1995). Test results shall be certified by Contractor and the records of said tests kept as per Section 30 of the Coordination Procedure. ESSO may establish an altemative list of inorganic indicator constituents in lieu of some or all of the heavy metals if the altemative constituents provide a reliable indication of inorganic releases from the solid waste landfill to the groundwater. ESSO may also add inorganic or organic constituents to those to be tested if they are reasonably expected to be in or derived from the waste contained in the unit or if they are likely to provide a useful indication of releases from the solid waste landfill to the groundwater. TABLE 4 Sample Analysis Parameters JINORGANIC CONSTITUENTS CAS RN'2 1 Antimony (Total) 2 Arsenic (Total) 3 Barium (Total) 4 Beryllium (Total) 5 Cadmium (Total) 6 Chromium (Total) 7 Cobalt (Total) 8 Copper (Total) 9 Lead (Total) 10 Mercury (Total) 11 Nickel (Total) 12 Selenium (Total) 13 Silver (Total) 14 Thallium ______(Total) 15 Vanadium (Total) 16 Zinc (Total) ORGANIC CONSTITUENTS3 17 Acetone 67-64-1 18 Acrylonitrile 107-13-1 19 Benzene 71-43-2 20 Bromochloromethane 74-97-5 21 Bromodichloromethane 75-27-4 22 Bromoform (tribromomethane) 75-25-2 R:\henr59021sarrsCm\userdiM:3.4.1.doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 26 of 30 SPECIFICATION ____________ Rev. 2 Aug.1~997 TABLE 4 (CONTD) 23 Carbon disulfide 75-15-0 24 Carbon tetrachloride 56-23-5 25 Chlorobenzene 108-90-7 26 Chloroethane (ethyl chlonde) 75-00-3 27 Chlorform (trchloromethane) 67-66-3 28 Dibromochloromethane 124-48-1 (chlorodibromomethane) 29 1 ,2-Dibromo-3-chloropropane (DBCP) 96-12-8 30 1,2-Dibromoethane (ethylene dibromide, 106-93-4 EDB) 31 o-Dichlorobenzene (1,2-dichlorobenzene) 95-50-1 32 p-Dichlorobenzene (1 ,4-dichlorobenzene) 106-46-7 33 trans-1,4-Dichloro-2-butene 110-57-6 34 1,1-Dichloroethane (ethylidene chloride) 75-34-3 35 1 ,2-Dichloroethane (ethylene dichloride) 107-06-2 36 1,1-Dichloroethylene (1,1-dichloroethene, 75-35-4 vinylidene chlorid_e) 37 cis-1,2-Dichloroethylene (cis-1,2- 156-59-2 dichloroethene) _ 38 trans-1,2-Dichloroethylene (transl,2- 156-60-5 dichloroethene 39 1,2-Dichloropropane (Propylene dichloride) 78-87-5 40 cis-1 ,3-Dichloropropane 10061-01-5 41 trans-1,3-Dichloropropene 10061-02-6 42 Ethylbenzene 100-41-4 43 2-Hexanone (methyl butyl ketone) 591-78-6 44 Methyl bromide (bromomethane) 74-83-9 45 Methyl chloride (chloromethane) 74-87-3 46 Methvlene bromide (dibromomethane) 74-95-3 47 Methylene chloride (dichloromethane) 75-09-2 48 Methyl ethyl ketone (MEK, 2-butanone) 78-93-3 49 Methyl iodide (iodomethane) 74-88-4 50 4-Methyl-2-pentanone (methyl isobutyl 108-10-1 ketone) 51 Stvrene 100-42-5 52 1,1,1,2-Tetrachloroethane 630-20-6 53 1, 1,2,2-Tetrachloroethane 79-34-5 54 Tetrachloroethylene (tetrachloroethene, 127-18-4 perchloroethylene) R:VMen,S9O2\sarosdm,userdiAvI34-.4doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC- SOLID WASTE LANDFILL Page 27 of 30 SPECIFICATION fRev. 2 |TAug. 1997 TAB.LE 4 (CONTrD) 55 Toluene 108-88-3 56 1,1,1-Tdchloroethane (methychloroform) 71-55-6 57 1,1 ,2-Tnchloroethane 79-00-S 58 Trichloroethylene (trichloroethene) 79-01-6 59 Trichlorofluoromethane (CFC-1 1) 75-69-4 60 1,2,3-Tnchloropropane 96-18-4 61 Vinyl acetate 108-05-4 62 Vinyl chloride 75-01-4 63 Xylenes 1330-20-7 1 The Chemical Abstracts Service registry number (CAS RN). 2. Where 'Total' is entered, all species in the groundwater that contain the element are included. 3 Common names of the volatile organic compounds are those widely used in govemment regulation, scientific publications and commerce; synonyms exist for many of them. 6.5.4 Monitoring Frequency The monitoring frequency for all constituents shall be annually during the active life of the facility and the closure period. A minimum of four statistically independent samples from each background and each downgradient well shall be collected and analyzed for the constituents. The independence of the four samples shall be achieved by bailing or purging at least three well volumes (or to dryness, if less) from each well before each of the four samples is collected ESSO may specify an appropriate altemative frequency for repeated sampling and analysis of the constituents. The altemative frequency shall be no less than annual and shall be based on factors such as lithology and hydraulic conductivity of the aquifer and unsaturated zone. groundwater flow rates, minimum distance of travel from waste to monitoring wells, and resource value of the uppermost aquifer. #6.5.5 Changes in Groundwater Quality Not later than 60 days after each sampling event, Contractor shafl notfy ESSO in writing if there has been a statistically significant change from background of any tested constituent at any monitoring wel. R:Vhenr59O2\sarosdmXuserdicV13:4-1.doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 28 of 30 SPECIFICATION Rev. 2 Aug. 1997 lf a statistically significant change from background of any tested constituent at any monitoring well has occurred, Contractor shall immediately place a notice in the operating record describing the increase. If a statistically significant change from background of any tested constituent at any monitorng well has occurred and the Contractor has reasonable cause to think that a source other than the solid waste landfill caused the contamination or that the statistically significant change resulted from error in sampling, analysis, statistical evaluation, or natura) variation in groundwater quality, then the Contractor shall submit a report providing documentation to this effect. The report shall be prepared by a qualified groundwater scientist and submitted to ESSO for review and approval not later than 90 days after the sampling event. 6.6 Records The Contractor shall maintain disposal records covering at least the following: a. Major operational problems or difficulties. b. Qualitative and quantitative evaluations of the environmental impact of the disposal site including results of: 1. Leachate sampling and analysis; 2. Ground and surface water quality sampling and analysis upstream and downstream of the site. 3. Source of daily, intermediate and final cover material. 4. Waste compaction. 5. Gas generation and gas control procedures. 6. Vector control efforts. 7. Dust and litter control efforts. c. Quantitative measurements of the solid wastes handied, accomplished through routine or periodic utilization of scales and topographic surveys of the site. d. Description of amounts and types of solid waste materials received in each landfill cell identified by source of materials, as per the database required by Coordination Procedure Section 30. This database shall be turned over to ESSO at project completion. e. Location and development of cells used by the Contractor. R:\tenrSS02\sarosdm\userdid'.13.4.i .doc:GH ESSO EXPLORATION& ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 29 of 30 SPECIFICATION Rev. 2 Au .199 #7.0 CLOSURE REQUIREMENTS 7.1 Within 180 days of the last receipt of wastes generated during construction, the Contractor shall complete the installation of a final cover system for the landfill cells used during the pre-operations phase that is designed and constructed to minimize infiltration and erosion. The final cover system shall be composed of no less than 750 mm (2.5 ft.) of soil and consist of an infiltration layer overlain by an erosion layer as follows: a. The infiltration layer shall consist of a minimum of 450 mm (I18 in.) of earthen material with a coefficient of permeability no greater than 1x10-i cm/sec (3.94x104 in/sec) overlain by a synthetic membrane that has a permeability less than or equal to the permeability of the bottom iiner system. The minimum thickness of the synthetic membrane shall be 0.5 mm (20 mils), or 1.5 mm (60 mils), in the case of HDPE, in order to ensure proper seaming of the synthetic membrane. b. The erosion layer shall consist of a mihimum of 300 mm (12 in.) of earthen material that is capable of sustaining native plant growth and shall be seeded or sodded immediately following the application of the final cover in order to minimize erosion. 7.2 The Contractor shall submit to ESSO for approval a written final closure plan that describes the steps necessary to close the landfill cells used during the pre- operafions phase. The final closure plan, at a minimum, shall include the following information: a. a description of the final cover design and methods and procedures to be used to install the cover; b. an estimate of the largest area of the landfill site ever requiring a final cover at any time duing the active life of the landfill; c. an estimate of the maximum inventory of wastes ever on-site over the active life of the landfill and a summary of the types and amounts of waste contained in each landfill cell; d. a schedule for completing all activities necessary to satisfy the closure criteria; and e. a final contour map depicting the proposed final contours, establishing top slopes and side slopes, proposed surface drainage features, and protection of any 1 00-year flood-plain. R:\t,enr5gO2ksarosdrntuserdiria3-4-1 .doc:GH ESSO EXPLORATION & ECS 13-4-1 PRODUCTION CHAD INC. SOLID WASTE LANDFILL Page 30 of 30 SPECIFICATION Rev. 2 Aug` 19-97- 7.3 No later than 45 days prior to the initiation of closure activities for the landfill cells used during the pre-operations phase, the Contractor shall provide written notification to ESSO of the intent to close the cells and place this notice of intent in the operating record. 7.4 Following receipt of the- required final closure documents, ESSO shall acknowledge the termination of operation and closure of the cells and evaluate whether they are properly closed. Contractor shall correct any deficiencies identified by ESSO in its evaluation. #7.5 Quality control testing documentation is as follows: a. The Contractor is responsible for placing and compacting clay soils for the final cover infiltration layer. b. The Contractor shall test the 450 mm (18 in.) of compacted material for its coefficient of permeability at a frequency of no less than one test per surface acre of finai cover. c. Permeability data shall be submitted to ESSO for approval. R:\henrS9O2sarosdm\userdigX1 3t-1 .doc:GH ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 1 of 29 SPECIFICATION Rev. 2 Oc.19 Prepared By Reviewed By Approved By Rev. Date Disciprine Engineering Project No. Engineer Manager Engineer / Manager 1 4 Dec 96 C.K Owens P.R. Scheltema MA. Jones 2 ME. Fedak 2?T772TTZT- R:\henr59O2\sarosdm\userdit2r-1-4.doc:gh ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION srs E s^ on ~~~~~~~~~~Page 2 of 29 SPECIFICATION Rev. 2 Oct. 1997 TABLE OF CONTENTS 1.0 GENERAL ....................................................3 2.0 SOIL EROSION MITIGATION ....................................................3 TABLES AND FIGURES TABLE 1: SPACING FOR TRENCH PLUGS ......................... ..........................6 TABLE 2: TEMPORARY WATERWAY CROSSING MATERIALS ................................8 TABLE 3: MAXIMUM NONEROSIVE CHANNEL VELOCITIES ....................................9 FIGURE 1: TOPSOIL STRIPPING ...........1....................................... 1 FIGURE 2: SEDIMENT BARRIER FILTER FABRIC .................................................. 12 FIGURE 3: FABRIC FENCE SEDIMENT .................................................. 13 FIGURE 4: DIVERSION DIKE .................................................. 14 FIGURE 5: DIVERSION DIKE CONFIGURATIONS AND SPACING .............. .............. 16 FIGURE 6: TRENCH PLUG .................................................. 17 FIGURE 7: TIMBER BRIDGE .................................................. 18 FIGURE 8: BRIDGE WITH CULVERTS ................ .................................. 19 FIGURE 9: STONE FORD TEMPORARY CONTROL MEASURE ................ ............... 20 FIGURE 10: EROSION CONTROL BLANKET .................................................. 21 FIGURE 11: RIP RAP .................................................. 24 FIGURE 12: RIP RAP OUTLET .................................................. 26 FIGURE 13: DESIGN CHART FOR RIP RAP LININGS ............................................... 29 EA26-1-4.D0C:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 3 of 29 SPECIFICATION Rev. 2 Oct. 1997 1.0 GENERAL This specification covers the design and installation of soil erosion mitigation measures to be used to control the amount of sediment removed from project areas by natural forces such as wind and rain. Contractor's responsibilities with respect to soil preservation are also discussed in the environmental management Coordination Procedure (Section 30) in the Job Specification. In general, temporary erosion control procedures shall be directed toward preventing soil erosion at the source, preventing silt and sediment from entering waterways and migrating downstream if soil erosion cannot be prevented. Permanent erosion control measures shall be implemented to prevent sedimentation of the drainage system and to prevent erosion of the project area. Temporary erosion and sedimentation control devices shall be installed and maintained from the initial land disturbance activity until the satisfactory completion and establishment of permanent erosion control measures. At that time, temporary devices shall be removed. 2.0 SOIL EROSION MITIGATION At a minimum, Contractor shall apply the following principles in implementing effective erosion control: * Construction activities shall be sequenced to minimize the amount of area disturbed at one time. Final grading, clean-up and restoration/reclamation shall be completed as soon as possible after construction is completed. * Overland flow from upslope areas shall be diverted around disturbed areas to minimize the amount of erosion-generating runoff from the disturbed area. * Measures that break slopes and diffuse flows or divert flows to stabilized outlets shall be used to reduce problems associated with concentrated flows and velocities resulting from clearing vegetation. * Temporary or permanent stabilization of exposed soils shall be provided as soon as practicable after construction activity ceases. Stabilization practices include but are not limited to seeding, mulching, geotextiles, sodding, and riprap. EA26-1 -4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION 63) . ~~~~~~~~~~~~ ~Page 4 of 29 SPECIFICATION Rev. 2 Oct. 1997 2.1 Topsoil Stripping and Preservation Contractor shall strip and preserve topsoil (Figure 1) and use it to provide a suitable growth medium for revegetation of disturbed areas. In cultivated and pasture areas, topsoil shall be stripped from the excavation area of any installation (pipeline, building, roadway, drilling pad, etc.) and from any surrounding area used during construction to provide access or storage. In other locations (e.g. forest, open savanna, developed areas), only the excavation area of the intended installation and subsoil spoil areas shall be stripped unless the level of activity and site specific conditions dictate otherwise. Topsoil shall be stripped to a minimum depth of 150 millimeters. The actual topsoil depth can vary depending on the location. Topsoil shall be segregated from subsoil, and topsoil shall be stockpiled on the uphill side of the installation. Stockpiles shall not extend through watercourses. With prior ESSO written approval, one or more alternate techniques that provide at least the same level of resource protection (e.g., scarification, surface texturing, mulching, fertilizing, seeding, seedling planting, etc.) may be used to control soil erosion and facilitate the establishment of appropriate vegetation. During site restoration, disturbed areas shall be scarified 70 to 100 millimeters to relieve compaction before respreading topsoil. Topsoil shall be uniformly distributed over the recontoured surface to a minimum compacted depth of 70 millimeters on 3(H):1(V) slopes and 120 millimeters on flatter slopes. The topsoil shall not be spread while muddy or when the subsoil is wet. Irregularities in the surface that result from this and other operations shall be corrected to prevent depressions and water pockets. The topsoil shall be compacted enough to ensure good contact with the underlying soil; however, excessive compaction shall be avoided. Light packing with a roller is recommended. In Work Site areas where topsoil was not stripped, the surface shall be ripped or scarified 70 to 100 millimeters to relieve compaction as the last activity over the area. 2.2 Sediment Barrier Contractor shall construct a temporary sediment barrier (Figure 2) at the perimeter of a disturbed area to intercept and retain sediment. This practice shall be applied below disturbed areas subject to sheet or ill erosion. During clearing and grubbing operations, equipment shall be utilized to create, where possible, a sediment barrier by pushing or dumping a mixture of limbs, small vegetation, and root mat with minor amounts of soil and rock into windrows along the toe of a slope where erosion and accelerated runoff is EA26-1 -4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION - Page 5 of 29 SPECIFICATION Rev. 2 Oct. 1997 expected. A filter fabric anchored over the berm shall be utilized to enhance the filtration ability of the barrier. The following are the construction specifications for the sediment barrier: * The sediment barrier shall have a minimum height of 1 meter. * The width of the sediment barrier shall be a minimum 2 meters at its base. * The barrier shall be constructed by piling brush, stone, root mat, and other material from the clearing process into a mounded row on the contour. Alternatively, if clearing and grubbing operations do not generate enough debris to create the sediment barrier shown in Figure 2, Contractor shall modify the design to create a vertical silt fence with the filter fabric as shown in Figure 3. 2.3 Diversion Dikes Contractor shall construct a dike across the slope of a disturbed area to redirect sheet flow or concentrated flow runoff around disturbed areas to a stabilized outlet where water can be discharged without adversely affecting the receiving area or channel. It can also serve as an interceptor dike to shorten the length of exposed slopes by intercepting runoff and diverting it to a stabilized outlet. This practice (Figures 4 and 5) shall be used upslope of disturbed areas where erosion is likely to occur and runoff protection is needed to prevent erosion, and on sloping access right-of-way or other long, narrow sloping areas less than 30 meters wide. The dike/swale shall be designed to carry the peak runoff from at least a 24- hour, 2-year frequency storm with a freeboard of not less than 0.1 meter. The draining area shall not exceed 2 hectares. The top width shall be 0.5 meter minimum. The height shall be 0.5 meter measured from the bottom of the swale. The side slopes shall be 2(H):1(V) or flatter. The grade shall be positive, not exceeding 2 percent. The spacing for diversion dikes shall be in accordance with Figure 5. Each diversion dike or interceptor shall have an adequate outlet capable of conveying runoff to a location where the discharge does not have adverse impact. E:A26-1 -4.DOC: mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 6 of 29 SPECIFICATION Rev. 2 Oct. 1997 2.4 Trench Plugs Contractor shall place a barrier consisting of sand bags around the pipeline to obstruct water flow or seepage along the pipeline, thereby controlling erosion of the trench backfill material. Sand bags shall contain 5 percent by weight of cement. This practice (Figure 6) shall be used along a pipeline trench where the slope exceeds 5 percent. The spacing for trench plugs shall be in accordance with Table 1. Contractor shall dig shallow ditches as necessary to channel water diverted by the ditch plugs away from the pipe trench. Table I Spacing for Trench Plugs Slope of Maximum Distance Pipeline Trench Between Plugs less than 5% not required except at watercourses 5 to 15% 90 m 15 to 25% 60 m 25 to 35% 30 m larger than 35% 15 m 2.5 Temporary Waterway Crossings 2.5.1 General Contractor shall install temporary structures across streams or water- ways for short-term use by construction vehicles and heavy equipment to prevent damage to the watercourse or the deposition of sediment into the watercourse. Exceptions may be made for rock bottom watercourses. Exceptions must be approved by ESSO. This practice shall be used where heavy equipment must be moved from one side of the watercourse to another or light-duty construction vehicles must cross the watercourse frequently for a short time period. The travelway for all structures shall be a minimum 5 meters wide. The structure shall be designed to pass 60 percent of the bank-full flow or the peak flow from a 24-hour, 2 year frequency storm (whichever is less) without overtopping. E:\26-1 -4.DOC:mj ESSO EXPLORATION & ECS 26-1I4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION S Page 7 of 29 SPECIFICATION _________________ Rev. 2 Oct. 1997 Contractor shall ensure that erosion does not result from the 10-year peak storm. Overtopping is allowed during the 24-hour, 10-year frequency storm if contained within the limits of the channel banks. Contractor shall ensure that the design flow velocity at the crossing structure's outlet is nonerosive for the receiving channel. If the slope above the stream banks is more than 2 percent, a diversion dike shall be placed above the stream banks to divert surface runoff away from the disturbed channel section and discharge the runoff to a stable outlet. 2.5.2 Bridge A temporary bridge (e.g., Figure 7) shall consist of wood or metal and be designed to support the maximum expected load. Bridges shall be securely anchored at only one end using steel cable or chain. Anchoring shall prevent the bridge from floating downstream. 2.5.3 Bridge with Culverts A temporary bridge with culverts (Figure 8) shall be designed to support the maximum expected load. The minimum culvert size shall be 0.3 meter (12 inch) nominal diameter. The culvert shall extend a minimum 0.5 meter beyond the upstream and downstream toe of the aggregate placed around the culvert. The maximum culvert size shall be 12 meters in length. The culvert shall be covered with a minimum 0.3 meter of aggregate fill. If multiple culverts are used, they shall be separated by at least 0.3 meter of compacted aggregate fill. Filter fabric shall be placed on the streambed and stream banks prior to placement of the pipe culvert(s) and aggregate. The filter fabric shall cover the streambed and extend 0.5 meter beyond the end of the culvert and bedding material. E:\26-1-4.DOC:rnj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. . SOIL EROSION MITIGATION S Page 8 of 29 SPECIFICATION _ _ _ _ _ _ _ _ _ _ _ _ _ _ Re.2Oct. 199777 2.5.4 Fords Fords can be constructed at watercourses where the bank height is less than 1.5 meters and the flow is intermittent. Approach sections shall be graded to a maximum 5(H):1 (V) slope. All fords shall be constructed to minimize the blockage of stream flow and allow free flow over the ford (Figure 9). The ford shall be stabilized with a layer of stone aggregate placed on filter fabric. All areas disturbed by ford installation shall be stabilized. 2.5.5 Materials The materials used for temporary waterway crossings shall be in accordance with Table 2. Table 2 Temporary Waterway Crossing Materials Item Materials Temporary bridges Prefabricated wood or steel Culverts Steel pipe, reinforced concrete pipe, or corrugated steel Aggregate fill Clean stone, ASTM D448, Size No. 1 (40 to 90 mm) Filter fabric Woven geotextile, EXXON GTF-200 or approved equivalent 2.6 Vegetative Lining Stabilization Contractor shall place a fabric matrix (erosion control blanket) consisting of natural fibers over seedbeds, channels, or steep slopes to prevent erosion by providing a protective cover during the establishment period of protective vegetation. This practice (Figure 10) shall be used in the following situations: * Waterways where channel velocity exceeds maximum velocities listed in Table 3 and * On slopes of 4(H):1(V) or more where the erosion hazard is high and vegetation likely to be slow to establish adequate protective cover. E:\26-1 4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 9 of 29 SPECIFICATION Rev. 2 oc 19 Table 3 Maximum Nonerosive Channel Velocities Soil Material Velocity (misec) Sandy loam 0.75 Alluvial silt7(1 1.00 Stiff clay 1.50 C1'Noncolloidal Channel lining selection shall be based on the Permissible Shear Stress method developed by the United States Federal Highway Administration's Hydraulic Engineering Circular #15, "Design of Roadside Channels with Flexible Linings." Td = Y xd xs Where: Td =maximum shear stress (kilograms per square meter [kg/M2] on channel lining Y = unit weight of water (9.8 kilonewtons per cubic meter) d = bank-full flow depth in center of channel (meters) s = channel slope gradient (meters per meter) Erosion control blanket used shall be straw, coconut, or wood fibers, or equivalent, sewn together with a biodegradable netting. The minimum width shall be 1.25 meters. For anchors, staples shall be No. 11 gauge wire or heavier and 150 to 250 millimeters long. Placement and installation shall be in accordance with the manufacturer's specifications. 2.7 Riprap Contractor shall place a layer of crushed concrete, rock, or stone (i.e., riprap) over an erodible soil surface to provide a permanent protective cover against erosion (Figures 11 and 12). Riprap shall be used in the following situations: Waterways where soil conditions, vegetative cover, and water velocity are such that erosion can occur under the design flow conditions and E:26-1-4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION SFECIFICATION ~~~~~~~~~Page 10 of 29 SPECIFICATION Rev. 2 Oc.19 * Disturbed waterways where vegetative lining stabilization is not adequate for protection against erosion. The riprap thickness shall be one and a half times the maximum stone size. The average stone size shall be selected from Figure 13 and be based on bank- full channel velocity. Materials for riprap shall be rock or stone with a minimum density of 2,500 kilograms per cubic meter and woven geotextile fabric, EXXON GTF-200 or an approved equivalent shall be used. Riprap shall be placed on filter fabric or a bedding of graded filter stone. E:A251 -4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 11 of 29 SPECI FICATION Rev. 2 Oct. 1997 F!GURE 1 TO3SOIL STR PPING =1nS OF DMRaINCE EUUL WOK A;EA S=RF E SUBSOL VEH=IzV WD- NOT2 E MUNCH 33% OF ) _) ARE PRE FJIL WORK E LETS OF DEUIMPNC5E iRNCH & SFL PREA I TOPSOL SIORX S P 1 HUBSOL V WM NOT PPEI WOR1CJG 33% OF ) ,j_CH _ j___ MUNCH IDM SPOL SDE NOIES 1. -IE FULL WORK RRA WM SHAL BE SPED Al-OG GJIED PR==nRAL AR1ES. IJ fL OMO!R ltATCNS, CNIX IHE A:EA ?BOVE THE PPEL1IE IRENCH PND =- SUBSOL SFOL AREA SAInL BE SIR=PED. 2. PIP= EJE CNa IDN PND SHAPE SHOlIN FOR CT.SY NIS. EA26-1-4.DOC:mj ESSO EXPLORATION & ECS 26-1A PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 12 of 29 SPECIFICATION Rev. 2 ct. 19 97 FIGURE 2 SEDIMENT BARRIER FILTER l ABR C (OPTIONAL) 1. EXCAVATE A 10 cr. X 1 cm. TRENCH 2. DRAPE FILTER FABRIC OVER ALONG THE UPHILL EDGE OF THE SEDIMENT THE SEDIMENT BARRIER AND INTO BARRIER. THE TRENCH. FABRIC SHOULD BE SECURED IN THE TRENCH WITH STAKES SET AT A SPACING OF APPROXIMATELY 1 METER. 3. BACKFILL AND COMPACT THE 4. SET STAKES ALONG THE EXCAVATED SOIL. DOWNHILL EDGE OF THE SEDIMENT BARRIER, AND ANCHOR BY TYING TWINE FROM THE FABRIC TO THE STARES. NOTES: 1. SEDIMENT BARRIERS SHALL BE INSPECTED AFTER EACH SIGNIFICANT RAINFALL AND NECESSARY REPAIRS SHALL BE MADE PROMPTLY. 2. SEDIMENT DEPOSITS MUST BE REMOVED WHEN THEY REACH APPROXIMATELY ONE-HALF THE HEIGHT OF THE BARRIER. E:\26-14.DC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. S_26-1-4 SOIL EROSION MITIGATION @Page 13 of 29 SPECIFICATION Rev. 2 Oct. 1997 F2CUPE 3 FA3RIC FENCE SEDIMENT BARRIER LEMRORA3Y EROSION CONTROL MEASJRE SURFACE RUNOFF SEE NOTE 4 AS REQUIRED./ _ 8' MAX. _____ _____ _____ _____ _____ _____ _____ ____3 E , - 45 - 2' x 2" WOODEN POST (TYP.) PLAN (OR STEEL POST FOR HARD SOIL) SILT FENCE SHALL BE TRENCHED INTO SOIL(SEE DETAIL) SILT FENCE FABRIC, EXXON 5TF-1EE OR APPROVED) EQUAL. RUNOFF POST SACKFILL TRENCH ELEVATION TRENCH DETAIL NOTES: 1.SILT FENCE SHALL BE INSTALLED TO FILTER SEDIMENT FROM SURFACE RUNOFF. 2. 3UILD-UP OF SEDIMENT SHALL BE REMOVED W'HEN SEDIMENT REACHES 1/2 THE ABOVE GROUND HEIGHT OF THE FENCE. 3. SILT FENCES SHALL BE PLACED TO FOLLOW (RUN PARALLEL TO) THE CONTOURS. 4. ON UPSLOPE INSTALLATIONS, BOTH ENDS OF THE S:LT FENCE SHALL BE TURNED AND EXTENDED UPSLOPE. E\26-1-4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION S Page 14 of 29 SPECIFICATION Rev. 2 Oc.19 FIGJRE - SHT. I OF 2 DIVERSION D KE PERMANENT EROSIN CONTROL MEASURE 0.5 m MIN. DIKE WITH A CREST SLOPE (COMPACTED SOIL) | 2:1 OR FLATTE (MIN.)~~~~~~~~~~~~~. m MN 2. 0 (MIN.) SECTION A-A SURFACE RUNOFF 1 3 m > i t~~~~~C DIVERSION DITCH NO SLOPE _ \\ REINFORCED | AREA SEE SECTION B-B DIVERSION DIKE DWG. LIMITS OF CONSTRUCTION DISTURBANCE SHT. 2 OF 2 _ PLAN EA26-1-4.DOCmj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION SPage 15 of 29 SPECIFICATION _________ ______ Rev. 2 Oct. 1997 F GCURE 4 - SHE. 2 OF 2 DIVERSiON D'KE PERMANEN- EROSION CONTROL MEASlRE 1.0 m MIN. UNDISTURBED SOIL REINFORCED AREA (0.5 m PAST BREAK SECTION B-B NOTES: 1. DIVERSIONS SHALL BE SPACED AS INDICATED ON THE DRAWINGS. 2. WHERE SLOPE OF CONSTRUCTION AREA EXCEEDS THAT FOR SAFE INSTALLATION, DIVERSIONS SHALL BE INSTALLED AT THE TOP AND BASE OF SLOPE ONLY. 3. DIVERSION DIKE SHALL BE INSTALLED ON A MAXIMUM 2 % SLOPE ACROSS THE RIGHT-OF-WAY. 4. OUTLET MUST BE ON VEGETATED AREA, OR STABILIZED WITH REINFORCEMENT AS SHOWN ON SECTION B-B. 5. REINFORCEMENT CAN BE AN EROSION CONTROL MAT, TURF REINFORCEMENT MAT OR ANY OTHER COMPANY APPROVED MATERIAL. E:26-1 -4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page16 of 29 SPECIFICATION Rev. 2 Oct. 1997 FIGURE 5 DIVERSION DIKE CONFIGURATIONS AND SPACING PERMANENT EROSION CONTROL MEASURE R/W R/W RIW R/W R/W R/W BDY. BDY. BDY. BDY. BDY. BDY. SLOPE SLOPE SLOPE SLOPE SLOPEE I - PIPELINE C PIPELINE C PIPELINE DIAGONAL DIKE DIAGONAL DIKE HERRINGBONE DIKE ONE-WAY SURFACE FLOW TWO-WAY SURFACE FLOW ONE-WAY SURFACE FLOW N.T.S. NOTES: 1. USE DIAGONAL DIKES WHERE DIRECTION OF SLOPE AND SURFACE WATER MOVEMENT IS OBLIQUE TO PIPELINE RIGHT OF WAY. 2. USE HERRINGBONE DIKES AND CROSS DITCH WHERE DIRECTION OF SLOPE AND SURFACE WATER MOVEMENT IS PARALLEL TO RIGHT OF WAY. 3. DETERMINE LOCATION AND DIRECTION OF DIKE BASED ON LOCAL TOPOGRAPHY AND DRAINAGE PATTERNS. ALSO, INSTALL DIKES IMMEDIATELY DOWNSLOPE OF TRENCH BREAKERS. SKEW DIKES 5' TO PREVENT WATER PONDING BEHIND DIKES. EXTEND DIKES A MINIMUM OF 2M OFF THE RIGHT OFWAY. 4. TYPICAL DIVERSION DIKE SPACING:- SLOPE GRADIENT (%) TYPICAL SPACING (M)*' LESS THAN 15 AS REQUIRED 15-20 60 20-25 45 25-30 35 GREATER THAN 30 20-30 FROM MARSHALL AND RUBEN, 1963. RELY ON FIELD JUDGEMENTTO DETERMINE APPROPRIATE SPACING. FOR EXAMPLE, HIGHLY ERODIBLE MATERIALS, SUCH AS GLACIAL-LACUSTRINE PARENT MATERIALS, INSTALL DIKES APPROXIMATELY 50% CLOSER THAN INDICATED ABOVE. SOURCE: ALBERTA ENVIRONMENT 1988 K\08837-787.012kFINAL DOCUMENTATION\Final English\EMPChad Vol 2 - Specs\ECS 26-14.doc:pc ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 17 of 29 SPECIFICATION Rev. 2 Oct. 1997 7-IJUR7 6 - LE E 7 ThE\OHC PLUG PERMANENT EROSON CONTRPO MEASURE SOI, F=1 S?ZK / O~~~~~~~~~~~.6 OF TRECH = IRENCH PfJG SPCIfG AS SHOWN ON PIA (15 m MN. PROFIE =CH PFG i 03 m Mu. CROSS- SE=IN NO'IES 1 =CH PIIJGS CONSET OF BtUPLAP aP.GS BIIED W1lH SOL. (MP SOL SHAlL NOT BE USED Nl 2ENCE PIUGS) . 2 TCH PIGS SHPLL BE uSTD AT E BANKS OF MAL B@J)R STRt CROSSuGS. 3 =CH PIIJGS SH;AL BE IEET N PE WHEN MR= S BACKFE. E:26-1 -4. DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 18 of 29 SPECIFICATION.Pae1of2 SPECIFICATION ~~~~~~ ~ ~~~~Rev. 2 Oct. 1997 FIGURE 7 TIMBER BRIDGE TEMPORARY CONTROL MEASURE ORIGINAL STREAM BANK < \ \ \ \ \ % 1/1( / lM )i r BRIDGE APPROACH WIDTH AS REQUIRED \/( FOR EQUIPMENT FILTER FABRIC lll~ ))it ; \ \1989 NSA R-2 STONE OR ASTM D448 #1 STONE |1 ( STREAM (90mm - 40mm) r( i /- ! I I PLAN TIMBER BRIDGE- PROFILE ZFILTER FABRIC, EXXON GTF-200 OR APPROVED EQUAL TO BE PLACED BENEATH STONE BRIDGE APPROACH (TYP. BOTH SIDES) NOTES: 1. TIMBER BRIDGES SHALL BE ADEQUATELY ANCHORED ON AT LEAST ONE END. 2. PERIODICALLY CHECK BRIDGE INSTALLATION AND REMOVE BUILD-UP OF SEDIMENT OR DEBRIS ON BRIDGE. 3. MATERIALS PLACED ALONG STREAM CHANNEL SHALL BE COMPLETELY REMOVED DURING FINAL CLEAN-UP. K\08837-787.012\FINAL DOCUMENTATION\Final EnglishEMPChad Vol 2 - Specs\ECS 26-1-4.doc pc ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION -Page 19 of 29 SPECIFICATION Rev. 2 Oct. 1997 FIGURE 8 BRIDGE WITH CULVERTS TEMPORARY CONTROL MEASURE FLOW 2 \ z l ] & 1 X l w O~ ~~~~R IGiNL STREW AM BN z .* t FrILTER MM STONE STEAM NSA R-3 OR AS RECIIIRED [SEE NOTE 4.) PLAN 0.15 m D C = COVER DE (O.3m MNIUM) FILTER FABRC, EXDON PRFL GTF-200 OR A COMPANY APPRED EOUAL TO BE PLACED BEEATH STONE BRIDGE. NOTES: 1. PERIOICAY CHECK BRIDGE NSALATION AND REMOVE BUILD-Up OF SEDNENT OR DEERIS ON BRIDGE. 2. CULVERT PIPE(S) SHALL B SE AS SHM ON PLAN 3. UATERIALS PLACE IN STREAM CHANNEL SHALL BE COMPLETELY REMOVED DUWR1 ENAL CLEAN-UP. 4. RIPRAP WITH 10Dmm AVERkGE DIAMETER SHALL BE USED FOR ALL BUT TlE -. O." METER OF STONE. K\08837-787.012FINAL DOCUMENTATION\Final English\EMPChad Vol 2 - Specs\ECS 26-1-4.doc:pc ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION 6 ) . - ~~~~~~~~~~~ ~Page 20 of 29 SPECIFICATION Rev. 2 Oct. 1997 FIGURE 9 STONE FORD TEMPORARY CONTROL MEASURE ORIGINAL STKRAZ BANK _____ ~~~~~~~~~~~~~~~~ ~~FILTER WIDTH AS REQUIRED /\ \ FOR EQUIPMENT K)~ ~ ) ~ ((U /'- .1 7 NSA R-2 CLEAN STONE < !/( STREAM OR ASTM D448 #1 STONE (90mm-4omnm) PLAN STONE PAD CUT BANK < MAX. FILTER FABRIC EXXON GTF-200 OR APPROVED PROFILE EQUAL NOTES: 1. THRU-STREAM EQUIPMETN CROSSINGS SHLLBE INSTALLED TO PROVIDE STABLE PASSAGE ACROSS STREAMS, OR OTHER AREAS WHERE BRIDGING IS IMPRACTICAL. 2. MATERIALS PLACED IN STREAM CHANNEL SHALL BE COMPLETELY REMOVED. 3. APPROACHES AT THE CUT BANMKS SHALL BE NO STEEPER THAN 5:1. E:\26-1-4.DOC:mj ESSO EXPLORATION & ECS 26-14 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 21 of 29 SPECIFICATION Rev. 2 Oct. 1997 FIGURE 10 - SHT. 1 OF 3 EROSION CONTROL BLANKET TEMPORARY EROSION CONTROL MEASURE A | -I -50mm A ,W-50m _50mm OVERLAP NATURAL CONTROL GROUND- BLANKET-7 SECTION B-B STEEP SLOPE INSTALLATION > 3:1 SLOPE K\08837-787.O12\FINAL DOCUMENTATION\Final English\EMPChad Vol 2 - Specs\ECS 26-1-4.doc:pc ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION - Page 22 of 29 SPECIFICATION Rev. 2 Oct. 1997 FIGURE 10 - SHT. 2 OF 3 EROSION CONTROL BLANKET T_Mp . ..... ....... .. 7MV0TARY EROSION CONTROL MEASJRE TOP OF SLOPE 2 81 FLOW STAPLE PATTEN 72 B _ _ _ _ _ _ _ ~~TYPEc c -i 0~~~~~~~~~~~~~~~~~~~ LOW VELOCITY C 5- - B ME;. TO HIGH D D 27- A VELCCITY I 18 M3TERS I L _ _ 4:1 3:1 2:1 1:1 TOE OF SLOPE STAPLE PATTERN TABLE (SEE STAPLE PATTERN GUIDE) 1 o 12- v m E t Nxx x x t X | 3 0.Sm X X ~~~0.Sm x. x X XX lm-- lm t - lm ~r.<> x x , A .x C x x x X X X ' X t a. X ND B CD 1 STAPLE PER SQ. M. 1 1/2 STAPLES PER SQ. M. 2 STAPLES PER SQ. M. 3.5 STAPLES PER SQ. M. STAPLE PATTERN GUIDE NOTES: 1. USE NORTH AMERICAN GREEN EROSION CONTROL BLANKET OR AN APPROVED EQUAL FOR VEGETATIVE LINING STABILIZATION. 2. EROSION CONTROL BLANKET SHALL EXTEND COMPLETELY ACROSS DISTURBED AREA TO PROTECT ERODIBLE SURFACES. 3. INSTALL ON FRESHLY GRADED AND ON FRESHLY SEEDED SOIL. E\26-1-4. DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 23 of 29 SPECI FICATION Rev. 2 Oct. 199 FHSUR 10 - SHT. 3 OF 3 EROSION CONTRC BLANKET TIMPORARv ROSION CONORCi MEASURE TOP OF BANK ETOP OF BA - EROSION CONTROL § _ 3~~~~~~LANETT =l I ~I - - - ;,- I: PLAN 7 ANCHOR IN ACCORDANCE \WITH MANUFACTURER'S EC3 SHALL COVER CHANNEL BOTTOM INSTRUCTIONS WHERE REVEGETATION OF CHANNEL BOTTOM IS REQUIRED. \ NATURAL GROUND SECTION A-A CHANNEL INSTALLATION NOTES: 1.EROSION CONTROL BLANKET SHALL EXTEND COMPLETELY ACROSS DISTURBED AREA TO PROTECT ERODIBLE SURFACES. 2.INSTALL ON FRESHLY GRADED AND SEEDED SOIL. E:\26-1 -4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION -Page 24 of 29 SPECIFICATION Rev. 2 Oct. 1997 FIGURE II - SHT. I OF 2 RIP RAP PERMANENT EROSION CONTROL MEASURE 9o0 ('Se( DBIRAC BAENK ILIJB 9F CONSJRUCJD CONSaRUCTJD PIA BP RPAP SiML BE PIA) O IDE FUIL COURSE =qiESS DRJSS VI ONE CONTNUOUS OPER=DN. OPERATrNS WEHI OF ME MP ERPS SHA IL NOT BE PEMI . MllDL PROMK MGY B AND M-HE \ODS FETE WMIH HfND PILD SMPUER POCK 1 OCRDER DESRED UNLOPRM FLIRERR _ CON GIF- 200 OR APPROUED E2UA-) FOR ROCK GRPADN SEE MIE. (EJUE 11 - SET 2 OF SEC= A-A EA26-1-4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION -Page 25 of 29 SPECIFICATION Rev. 2 Oct. 1997 GURE 11 - SHT. 2 OF 2 RIP RAP IERMANENT EROSON CONTROL MEASURE NATIONAL STONE ASSOCIATION I- - RIP RAP GRADATION TABLE l! ________ SIZE OF ROCKS IN CENTIMETERS NSA 50 MINIMUM ~~~MIN. NSA MAXIMUM MINIM THICKNESS TOE BERM NUMBER AVERAGE OF RIPRAP I R-I 15 1 * ~ LAYER (CM.) (METERS) R-3 i1 8 5 23 0.51 0.5 R-4 30 15 8 45 0.75 0.75 R-5 - 46 23 13 69 -1.2 j 1.2 THE AVERAGE.SIZE,._.ORc, IS DE- NED AS A SIZE THAT IS txuElDhD BY A61 LEAST nUlt UYT±± T'UTi'AL VdEi(ThT SHiFVE. (I.E., 50% OF THE TONNAGE SHIPPED SHALL CONSIST OF PIECES LARGER THAN THE "AVERAGE SIZE" SHOWN IN CHART.) ** PIECES SMALLER THAN THE "MINIMUM SIZE" SHOWN SHALL NOT EXCEED 15% OF THE TONNAGE SHIPPED. NOTES: 1. ROCK UTILIZED FOR RIP RAP SHALL CONSIST OF CLEAN, DURABLE ROCK, INSOLUBLE WATER, AND RESISTANT TO WEATHERING. 2. ALL MATERIAL SHALL BE FREE OF STRUCTURAL DEFECTS, SHALE SEAMS, AND ORGANIC MA:TER. 3. INDIVIDUAL PIECES SHOULD BE SHARPLY ANGULAR, BLOCK SHAPED, AND HAVE A MINI SPECIFIC GRAVITY OF 2.5. 4. NO PIECE SHALL HAVE A LENGTH EXCEEDING THREE (3) TIMES ITS WIDTH OR DEPTH. 5. EACH LOAD OF ROCK SHALL BE OF A WELL-GRADED MIXTURE. A WELL-GRADED MIXTUR AS USED HEREIN, IS DEFINED AS A MIXTURE COMPOSED PRIMARILY OF LARGER STONE BUT WITH A SUFFICIENT MIXTURE OF SMALLER SIZES TO FILL THE VOIDS. E:26-1 -4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION -Page 26 of 29 SPECIFICATION Rev. 2 oc 19 FGURE -12- SHT. I OF 3 RIP RAP OJTLET CHANNEL SECTION VIEW PLAN VIEW La TOP OF RIP RP rTOP OF CHANNEL 15 0MM DOWNSTREAM CHANNEL 7- FILTER CLOTH OR GRADED 1 m AGGREGATE FILTER SECTION VIEW PROFILE VIEW MINIMUM DEPTH OF RIP RAP - MAXIMUM DEPTH OF FLOW (DOWNSTREAM NORMAL DEPTH OR DISCHARGE DEPTH, WHICH EVER IS GREATER) A ____ SLXOPE TO VARY FROM 2:1 PIPE DIAMETER PIPE OUTLET TO EXISTING CHANNEL BOTTOM AT END OF APRON FILTER FABRIC OR GRADED AGGREGATE FILTER WIDTH OF BOTTOM TO VARY FROM 1/2 PIPE DIAMETER PIPE OUTLET TO EXISTING CHANNEL BOTTOM AT END OF APRON SECTIION VIEW E\26.1-4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 27 of 29 SPECIFiCATION Rev. 2 Oct. 1997 FIGURE 12 - SHT. 2 0 3 RP RAP .J-ET UNOONHKND PROFILE / A i L ENDWALL - La PIAN VIEW DI SCH.( MIN.j EXISTING d/2 Pip A E STABLIZED CHANNEL d/2 Pipe I / Xfl 1305mm TOE WALL L GRADED AGGREGATE FILTER OR FILTER FABRIC PROFILE VIEW RIP RAP TO BE EMBEDDED IN ORIGINAL GRADE PROPOSED TRANSITION SECTION SEE RIP RAP STANDARD & FILTER FABRIC OR SPECIFICATIONS GRADED AGGREGATE FILTER CROSS SECTION A-A E:126-1 4.DOC:mj ESSO EXPLORATION & ECS 26-1-4 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 28 of 29 SPECIFICATION _ _ _ _ _ _ _ _ _ _ _ _ _ __ Rev. 2 Oct. 1997 FICJRE 12-SHT.305 RIP RAP PERMANENT EROSION CONTR3L MEASURE NATIONAL STONE ASSOCIATION l_______ RIP RAP GRADATION TABLE t SIZE OF ROCKS IN CENTIMETERS |MIN. NSA MAXIMUM Ds MINIMUM|THICKNESS NUMBER AVERAGE |OF RIPRAP l I * ** LAYER (CM.) R-3 15 8 5 23 R-4 30 15 8 45 R-5 46 23 13 69 * THE "AVERAGE SIZE," Okd , IS DEFINED AS A SIZE THAT I EXCEEDED BY AT LEAST 50% OF THE TOTAL WEIGHT SHIPPED. (I.E., 50% OF THE TONNAGE SHIPPED SHALL CONSIST OF PIECE LARGER THAN THE "AVERAGE SIZE" SHOWN IN CHART.) ** PIECES SMALLER THAN THE "MINIMUM SIZE" SHOWN SHALL NOT EXCEED 15% OF THE TONNAGE SHIPPED. NOTES: 1. ROCK UTILIZED FOR RIP RAP SHALL CONSIST OF CLEAN, DURABLE ROCK, INSOL WATER, AND RESISTANT TO WEATHERING. 2. ALL MATERIAL SHALL 3E FREE OF STRUCTURAL DEFECTS, SHALE SEAMS, AND OR MATTER. 3. INDIVIDUAL PIECES SHOULD BE SHARPLY ANGULAR, BLOCK SHAPED, AND HAVE A SPECIFIC GRAVITY OF 2.5. 4. NO PIECE SHALL HAVE A LENGTH EXCEEDING THREE (3) TIlES ITS WIDTH OR D 5. EACH LOAD OF ROCK SHALL BE OF A WELL-GRADED MIXTURE. A WELL-GRADED M AS USED HEREIN, IS DEFINED AS A MIXTURE COMPOSED PRIMARILY OF LARGER BUT WITH A SUFFICIENT MIXTURE OF SMALLER SIZES TO FILL THE VOIDS. EA26-1-4.DOnmj ESSO EXPLORATION & ECS 26-14 PRODUCTION CHAD INC. SOIL EROSION MITIGATION Page 29 of 29 SPECIFICATION Re.2 Oct. 1997 FIGURE 13 DESIS^N CHART FORP P RAP LININSS DESIGN CHART FOR RIPRAP LININGS 130~ __ ___ 100 I , X l 90 ~ _ _ _ _ so -70 3. _ 40 - 1 __6 0 0 30*r 10 - 0 2 46 1 3 5 BOTTOM VELOCITY (m/s) E:\26-1-4.DOC:mj ESSO EXPLORATION 8 PRODUCTION CHAD INC. ECS 26-1-5 ENVIRONMENTAL IMPACT MITIGATION Page 1 of 22 SPECIFICATION Rev. 2 Oct. 1997 Prepared By Reviewed By Approved By Rev. Date Discipline Engineering Project No. Engineer Manager Engineer I Manager 1 4 Dec 96 C.K Owens P.R. ScheKtema MA. Jones 2 M.E. Fedak R5etS90sarosdmkuserdiu26-1-S.doc:gh ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 2 of 22 SPECIFICATION ________________ Rev. 2 Oct. 1997 TABLE OF CONTENTS 1.0 SCOPE .......................................................3 2.0 BASELINE ASSESSMENT AND SITE MONITORING .......................................................3 3.0 GENERAL MITIGATION MEASURES .......................................................3 4.0 EFFLUENT WATER CRITERIA .......................................................4 5.0 AIR EMISSIONS CRITERIA .......................................................5 6.0 SOIL PROTECTION MITIGATIONS .......................................................7 7.0 WATER-BODY AND WETLAND PROTECTION MEASURES .............................................8 8.0 CONTROL OF WORK SITE DISTURBANCE AREA ....................................................... 9 9.0 MITIGATION OF CONSTRUCTION RELATED IMPACTS ................................................. 10 10.0 SURFACE RESTORATION ...................................................... 17 11.0 SITE RECLAMATION..............19 LIST OF TABLES TABLE I WORLD BANK LIQUID EFFLUENT CRITERIA .......................................................4 TABLE 2 WORLD BANK AMBIENT AIR QUALITY CRITERIA ..................................................5 TABLE 3. DESIGN PARAMETERS FOR AIR EMISSIONS MODELING ....................................6 EA26-1 -5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 3 of 22 SPECIFICATION Rev 2ct. 1997 - ENVIRONMENTAL IMPACT MITIGATION 1.0 Scope Measures to protect the Work Site and surrounding areas from unacceptable impacts are defined in this specification. General measures that apply to all elements of the project are discussed. Other technical specifications include provisions to mitigate impacts resulting from their specific activity/unit. Sections, below, on baseline assessment and site monitoring, effluent water criteria, air emissions criteria and soil protection mitigations contain information that needs to be considered during the design of Contractor's temporary and permanent facilities and parameters to be monitored during the Work. Soil protection, water-body and wetland protection, control of Work Site area, and mitigation of construction related impacts sections contain information on how Contractor's in-country Work shall be conducted in order to minimize environmental impacts. Sections on surface restoration and site reclamation provide additional requirements that need to be met before closure of temporary Work Sites and Acceptance of the Work by ESSO. Contractors environmental monitors shall be able to suspend activities if these activities are clearly having a markedly adverse effect on the environment (for instance, in periods of heavy rainfall it may be necessary to cease earth-moving activities, without stopping all of the Work). 2.0 Baseline Assessment and Site Monitoring In accordance with the Coordination Procedure, Contractor shall document Work Site conditions before beginning the Work in a given area. Contractor shall note the type of environment and current condition (e.g., evidence of human impacts or natural soil erosion). Contractor shall sample surface water and ground water (if appropriate) and document the water quality. Surface effluents from Work activities will be monitored daily and resulting changes in surface water quality recorded. Work Site conditions, and relevant soil and water samples shall be analyzed and reported to ESSO upon completion of Work Site restoration activities. Samples shall be analyzed by a third-party independent laboratory approved by ESSO. 3.0 General Mitigation Measures Contractor's responsibilities with respect to management of wastes, spill prevention and response, and protection of plant and animal species and habitat, and complementary E:A26-1-5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 4 of 22 SPECI FICATION Rev. 2 Oct. 1997j -requiTe-ments with respect to air and water pollution and site restoration are as outlined in the Environmental Management Coordination Procedure (Section 30) in the Job Specification. 4.0 Effluent Water Criteria All liquid effluents disposed via surface discharge as per Contractor's approved waste management plan as well as any other surface run-off from the Work Site shall meet World Bank effluent standards for waste water. All discharges of treated effluents to perennial surface water bodies must provide for at least a 100:1 dilution of the effluent. Water treatment shall include all processes necessary to achieve these standards. Effluents containing human wastes shall also be treated with 2-5 mg/L chlorine for a minimum of thirty minutes prior to discharge. Key World Bank effluent criteria are shown in Table 1. Contractor shall test effluents daily for parameters shown in Table 1 using methods in Standard Methods for the Examination of Water and Wastewater (Mary Ann H. Franson, editor, American Public Health Association, 1995). Test results shall be certified by Contractor and the records of said tests kept as per Section 30 of the Coordination Procedure. TABLE 1 WORLD BANK LIQUID EFFLUENT CRITERIA1 Parameter [ Maximum Levels pH 6-9 BOD5 < 50 mg/L Oil and Grease < 20 mg/L Heavy Metals, Total (except Barium) < 10 mg/L Phenolic Compounds < 100 mg/L Total Suspended Solids < 50 mg/L Coliform Bacteria < 400 MPN/1 00 mL2 (MPN-Most Probable Number) Temperature - at the edge of the Max 50C above ambient temperature of mixing zone receiving waters - max 30C if receiving waters > 280C) Source: The World Bank Environment, Health and Safety Guidelines, Onshore Oil and Gas Development (World Bank, 1995) 1. Maximum daily discharge limits 2. Average monthly concentration (i.e., 30 consecutive days of sampling) E:\26-1-5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 5 of 22 SPECIFICATION Rev 2 ct. 1997 5.0 Air Emissions Criteria The contractor shall ensure that air pollutant emissions from facility sources do not cause exceedances of the World Bank ambient air quality concentration standards shown in Table 2 at locations outside the Work Site boundary. ESSO will consider these standards to be met if the air emissions source performance measures given in Table 3 are met. If the measures in Table 3 are not met, then air emission control measures shall be implemented and equipment/facility design modified, as necessary, to comply with these source performance measures. Testing for stack emission rates, exhaust gas temperatures and exhaust gas flow rates shall be measured by Contractor at start-up, and shall be performed in accordance with testing methodologies deemed appropriate per the World Bank; in the absence of established World Bank testing methodologies, US EPA Source Test Sampling and Analysis Methods shall be used. Equipment-specific performance criteria presented in Table 3 are based on the size, model, relative location, operating schedules, and fuel type assumed in the Design Basis for this project. The Contractor's design of permanent facilities, including facility layout (equipment location, orientation, and building size/configuration) shall not differ substantially from facility design assumed in the Design Basis without written approval received from ESSO. TABLE 2 WORLD BANK AMBIENT AIR QUALITY CRITERIA Parameter | Maximum Level Particulate Matter (<10pm) 3 Annual Arithmetic Mean 100 pg/Mi Maximum 24-hour Average 500 pg/i Nitrogen Oxides, as NO2 3 Annual Arithmetic Mean 100 pg/i Maximum 24-hour Average 200 pg/M3 Sulfur Dioxide Annual Arithmetic Mean 100 pg/iM Maximum 24-hour Average 500 pgin Source: The World Bank Environment, Health and Safety Guidelines, Onshore Oil and Gas Development (World Bank, 1995) EA26-1-5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 6 of 22 SPECIFICATION Rev. 2 | Oct. 1997 TABLE 3. DESIGN PARAMETERS FOR AIR EMISSIONS MODELING EQUIPMENT TYPE EQUIPMENT SIZE EMISSION RATE(1" STACK EXHAUST GAS EXHAUST GAS H EIGHT(2) TEMPERATURE(3) FLOW RATE(4) NO, PM SO2 (ft)( (K) (F) (C) (ft3/s) (m3/s) PUMP STATIONS Main Pump Diesel Engines 6000 HP 12.1 0.63 0.51 g/HP-hr 50 15.24 644 700 371 393 11 Generator Diesel Engines 1000 HP 12.1 0.63 0.51 g/HP-hr 50 15.24 644 700 371 98 3 Fired Heater 98 MBtu/hr 135 55.4 66.3 g/MBtu 125 38.1 561 550 288 894 25 DOBA OPERATIONS CENTER Flare 14000 m3fuel/hr 30.9 9.2 0''6) g/MBtu 50 15.24 1272 1830 999 10,000 283 Crude Oil Topping Plant Fired Heater 11.2 MBtu/hr 135 55.4 66.3 g/MBtu 30 9.15 561 550 288 397 11 Turbines 33,000 HP 2.97 0.34 0.63 g/HP-hr 35 10.66 767 921 494 1782 50 Incinerator 3,455 tonne/year 3005 917 1084 g/tonne 20 6.10 380 225 107 125 4 (1) Values shown are maximum allowable emission rates. Incinerator emission rates are based on the following waste percentage and heat content values (where waste classifications are as defined in the Waste Incinerator Specification). Waste Classification _ Heat Content (Btu/lb) Type 0 2.30 8500 Type 1 1.60 6500 Type 2 0.40 4300 Type 3 & 4 0.05 2500 Type 5 44.75 18000 Type 6 50.90 18000 (2) Values shown are minimum allowable stack heights. (3) Exhaust temperatures should not differ from degrees Fahrenheit values presented by more than 10%. (4) Exhaust gas flow rates should not differ from values presented by more than 20%. (5) Expected to be very low because of the fuel source, assume no control measures are needed. ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ECS_261_5_ ENVIRONMENTAL IMPACT MITIGATION Page 7 of 22 SPECIFICATION Rev. 2 OcMt.1a997 6.0 Soil Protection Mitigations 6.1 Soil Erosion Mitigations Contractor shall take actions necessary to prevent erosion from occurring as a result of construction activities. Minimum standards and mitigation measures are included in the Soil Erosion Mitigation Specification. This specification applies to all Work Site areas including borrow pits/areas, storage and laydown areas, camps, and access roads. 6.2 Spill Remediation Standards 6.2.1 Hydrocarbons In the event of a spill of a hydrocarbon based product, Contractor shall bring all soil containing over one weight percent hydrocarbon to the surface (top 30 cm or less) for remediation or disposal. Soil containing over five weight percent hydrocarbon shall either be mixed in place to less than five weight percent total hydrocarbons or shall be removed to an ESSO approved treatment or disposal site. Soil shall be treated to below one weight percent hydrocarbon (as measured using a test method accepted by ESSO). If selected as the remediation method, in-place bioremediation of the product shall be initiated by using the following steps: * Add slow release fertilizer at a rate of 1 kg urea per 10 m2 and 0.5 kg of triple superphosphate per 10 m2 (altemate forms of nitrogen and phosphorous may be used with ESSO's approval). If run-off from the site could impact nearby streams or sensitive vegetation, the level of fertilizer should be reduced by an amount appropriate for the distance to the receptor. * Till in fertilizer * Water, if practical, to initiate biodegradation process (target: 70% of the soil's water holding capacity). E\26-1 -5.D0C:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. -1-5 ENVIRONMENTAL IMPACT MITIGATION Page 8 of 22 SPECIFICATION Rev. 2 Oct. 1997 6.2.2 Acids and Bases In the event of a spill of materials with a pH more than 2 units above or below native soil pH, Contractor shall neutralize the affected soils, adjusting the pH to that of native soil in the area. 6.2.3 Miscellaneous Materials Hydraulic fluid, anti-freeze, solvents and other specialty fluids used on the construction site should be selected so that impacts are minimized in the event of a release (e.g. using less toxic versions of these products). Characteristics of the product will determine the appropriate treatment/disposal action and the concentration of product that could be left in the site soil without significant impact. Spill response and remedial actions shall be approved on a product-by-product basis by ESSO as per the requirements of Section 30 of the Coordination Procedure. 7.0 Water-body and Wetland Protection Measures 7.1 Equipment Operation and Refueling Where mobile equipment is required to operate and refuel within 30 meters of a water-body or wetland, the following measures shall be employed by Contractor to minimize the risk of fuel spills into the water-body: (i) ensure that all containers, hoses and nozzles have no leaks; (ii) ensure that pumps have operational emergency shut-off switch; (iii) ensure that nozzles are equipped with automatic back flow shut-off switches; (iv) where fueling must be performed within this area, operators shall be stationed at both ends of the hose unless the ends are visible and are readily accessible by one operator; (v) fuel remaining in the hose shall be returned to the storage facility; and (vi) sorbant boom or similar material capable of capturing oily substances from the surface of the water shall be placed so that any released materials shall be absorbed or contained for subsequent recovery. 7.2 Vehicle Crossings Contractor shall install and maintain vehicle crossing structures such as temporary bridges at watercourses so that no machinery need ford a watercourse except as otherwise provided in 9.4.1. E:\26-1 -5.DC:rnj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 9 of 22 SPECIFICATION Rev. 2 Oct. 1997 8.0 Control of Work Site Disturbance Area Work Site access shall be restricted to existing roads, railroads, additional road right-of- way provided by ESSO, waterways designated by ESSO and ESSO provided pipeline right-of-way, storage and laydown areas, and permanent facilities sites. Contractor shall take the following measures to control the Work Site: a) Work activities, project-related vehicle traffic, and equipment storage shall be restricted to approved roads, designated access roads, pipeline right-of-way, storage areas, staging and parking areas, and other Work Site areas; b) Contractor shall not construct any roads without prior approval from ESSO; c) All traffic safety and road closure regulations shall be followed; d) Off-road traffic outside of designated areas shall be prohibited; e) Project-related vehicles shall observe a 30 kilometer per hour maximum speed limit on the Work Site. The 30 kilometer per hour maximum speed limit applies to congested work areas and camps. Contractor shall apply judgment, such as Job Safety Analysis (including factors such as dust, population and environment) to determine safe speeds for other areas; f) Parking, storage, and general Work Site areas shall be designated by flagged stakes. These areas shall be established in locations disturbed by previous activities, to the extent possible; g) Pipeline right-of-ways shall be clearly marked at their centerline and outside boundaries, prior to construction; h) Construction shall be limited to daylight hours; i) Unauthorized public use of the Work Site areas and non-public access roads shall be minimized by placement of physical barriers and signs (with English, French and pictorial representations of the messages); and j) Unless specified by ESSO, temporary roads and Work Site areas shall be removed, and the surface reclaimed as described below, when they are no longer needed for the Work. Restoration of temporary access roads shall require the planting of trees or placement of other barriers to prevent vehicular access. Clean-up and reclamation shall be completed as quickly as practical following completion of Work activities in Work Site areas. E:\2-1 -5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 10 of 22 SPECIFICATION IRev. 2 1Oct. 19977 9.0 Mitigation of Construction Related Impacts 9.1 Clearing Cleared areas include pipeline right-of-way, sites for facilities construction, access roads, storage and laydown areas, camps, and other related Work Site areas. Contractor shall clear only the areas required for construction and operations as approved and specified by ESSO. ESSO may identify trees and other objects to be preserved depending upon size and location of the area to be cleared. Contractor shall mark vegetation, trees and other objects that are to remain and shall protect these items from damage. The disposition of trees that must be felled shall be as specified below. Contractor may use timber cut on Work Site areas in its construction work (provided appropriate fees are paid to the Govemment), but shall not cut timber located off the Work Site. Brush and trees shall be felled parallel to or back toward the area to be cleared in order to minimize damage to structures and trees on adjacent property. Grubbing of root stock and stumps shall be done only where necessary to maintain unobstructed access or protect the installation. Unless specified otherwise by ESSO, Contractor shall manage and dispose of trees, brush, stumps and limbs in the following manner: (i) identify, limb and segregate all trees of commercial value; (ii) cut up and neatly stack lesser materials into manageable pieces for use by local inhabitants (not requiring more than two people to carry, and no longer than three (3) meters); (iii) upon approval of ESSO, lesser materials may be processed through a chipper for use as bulking agent for land treatment, composting or distribution over cleared areas during site restoration (mulching). Burning of vegetation shall be minimized to the maximum extent feasible. 9.2 Grading Grading by Contractor shall be limited to that area necessary to permit movement and operation of equipment. Removal of soil seed- banks (topsoil) shall be done in advance of grading or trenching in order to prevent unnecessary delays. Graded material from the right-of-way shall be stockpiled in the cleared portion of the right-of-way for use during backfill and cleanup. E:\26-1 -5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 1 1 of 22 SPECIFICATION -Rev. 2 Oct. 1997 Topsoil removal, storage and reuse shall be as described in the Soil Erosion Mitigation Specification. Grading by Contractor shall preserve the existing natural drainage topography as nearly as practicable. When terraces, levees, and other such facilities are cut, Contractor shall leave them open only as long as necessary for the Work and restore them to their original state as promptly as practical. Grading shall not be allowed in riparian areas/stream crossings within 24 hours of significant precipitation. Contractor shall avoid the formation of continuous rows of spoil or lengths of open trench that interfere with the passage of livestock and vehicles across the Work Site. Gaps shall be left in the rows of spoil at ESSO-designated intervals and to coincide with fences, water courses, access tracks, obvious livestock routes, etc. Stockpiled topsoil or backfill shall be stored above the stream high water mark, outside any riparian zone, and not in any area where the material could be easily washed back into the stream. The boundaries of unsuitable areas for stockpiling material at stream crossings shall be marked by Contractor's environmental monitors in consultation with its construction crews. Potential erosion into a stream of stockpiled material or soil from the exposed bank shall be prevented by rows of hay bales or available equivalent along the bank. The bales shall be placed at flowing river or creek crossings at the end of each work day during the rainy season, or any other day when rain is forecast. Stockpiled topsoil or spoil shall not be exposed near a stream channel or riparian area for more than 30 days. Excess material removed from graded areas shall be stockpiled within the cleared area of the Work Site. After construction it shall be replaced as closely as possible to its original location. 9.3 Hydrostatic Testing When Contractor's scope of Work includes hydrotesting of installed facilities, Contractor shall develop a hydrotest plan for approval by ESSO. Hydrotest protocols shall conform with the Hydrostatic Testing Specification and the following practices: a) Disposal of the hydrotest water shall conform with Contractor's approved Waste Management Plan. Preferred locations for discharge of water will be onto soil (e.g., into infiltration beds or percolation ponds) rather than into water courses. EA261 -5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 12 of 22 SPECIFICATION Rev. 2 Oct. 1997 b) When taking on hydrotest water from a watercourse, the intake hose shall be screened to prevent entrainment of fish and other aquatic life. Adequate flow rates must be maintained in the watercourse to protect aquatic life, provide for all water-body uses, and provide for downstream withdrawals of water by existing users (no more than ten (10) percent of the watercourse flow may be diverted to hydrotest use). c) Hydrostatic test manifolds shall be located outside wetlands and rparian areas to the maximum extent practicable. d) Where surface waters with potential biological pathogens are used as the hydrotest water source, Contractor shall take measures to prevent the exposure of workers to these pathogens in the event of a hydrotest leak. e) Contractor shall regulate discharge rate and use energy dissipation device(s) in order to prevent erosion, stream bottom scour, suspension of sediments, and excessive stream flow. Test water may need to be discharged into a filter bag, hay bale or silt fence containment structure to remove contaminants and sediments from within the pipeline prior to discharge. f Contractor shall sample the test water during discharge to verify the absence of significant oil and grease or other pollutants 9.4 Water-body Crossings It is assumed that pipelines are the only facilities that will cross water-bodies, and that pipelines will be buried. Therefore, the following text is written in the context of a buried pipeline. If other facilities cross water bodies, the intent of this section shall apply to their installation as well. 9.4.1 General Crossing Procedures Construct crossings as close to perpendicular to the axis of the water- body channel as engineering and routing conditions permit. Adequate flow rates must be maintained to protect aquatic life, provide for all water-body uses, and provide for downstream withdrawals of water by existing users. Construction equipment (except that used by clearing crews) must cross water-bodies on bridges consisting of one of the following: a. Equipment pads and culvert(s); b. Clean rock fill and culvert(s); or c. Flexi-float or portable bridge. E:\26-1 -S.DC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ______,- ENVIRONMENTAL IMPACT MITIGATION Page 13 of 22 SPECIFICATION Rev. 2 oct. 1997 If clearing or grading equipment must cross- water-bodies prior to installation of equipment bridges, crossings shall be limited to the maximum extent feasible. Contractor shall limit use of equipment operating in the water-body to that needed to construct the crossing. Contractor shall limit the size of the crossing and adjacent impacted area to the minimum necessary for passage of the trench and associated equipment. Contractor shall attempt to complete trenching and backfill work within the water-body (not including blasting) within 48 hours, unless site- specific physical conditions make completion within 48 hours impractical. 9.4.2 Equipment Bridges All equipment bridges shall be designed to withstand the maximum flow and maintained to prevent flow restriction during the period the equipment bridge is in place. Unless otherwise instructed by ESSO, remove all flue, dams and equipment bridges after final cleanup and grading but prior to completion of initial permanent seeding (if seeding is required). Where appropriate alternative access is available to the applicable parts of the Work Site, equipment bridges shall be removed if there will be more than 1 month between final cleanup and grading and the beginning of initial permanent seeding (if seeding is required). Consistent with the availability of reasonable alternative access, temporary bridges across water-bodies shall be removed at the earliest time practical to minimize impacts. 9.4.3 Temporary Erosion and Sediment Control Contractor shall comply with the requirements of the Soil Erosion Mitigation section of this specification in order to minimize impacts to watercourses. Contractor shall also implement the additional measures to control sediment loading in water-bodies as described here. Install and maintain, in proper working order, temporary sediment filter devices adjacent to all water-bodies in the vicinity of disturbed soil. EA26-1-5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 14 of 22 SPECIFICATION Rev. 2 Oct. 1997 Use trench plugs at all non-flumed water-body crossings to prevent diversion of water into upland portions of pipeline trench during construction. Dewater the trench in such a manner that no heavily silt-laden water flows into any water-body. Install permanent slope breakers and trench breakers at base of all slopes adjacent to water-bodies. 9.4.4 Bank Stabilization and Revegetation Limit use of rip-rap to areas where flow conditions preclude effective vegetative stabilization, unless otherwise specified by ESSO. 9.4.5 Maintenance Allow a riparian strip at least 5 meters wide, but preferably 8 or more meters wide, as measured from the water-body's mean high water mark to permanently revegetate with native woody plant species across the entire right-of-way. However, to facilitate periodic pipeline corrosion/leak surveys, a corridor centered on the pipeline up to 3 meters wide may be maintained in an herbaceous state. In addition, trees that are located within 5 meters of a pipeline and are greater than 5 meters in height may be selectively cut and removed from the right-of-way. 9.5 Wetland Crossings It is assumed that pipelines are the only facilities that will cross wetlands, and that pipelines will be buried. Therefore, the following text is written in the context of a buried pipeline. If other facilities cross wetlands, the intent of this section shall apply to their installation as well. 9.5.1 General Procedures The only access roads other than the construction right-of-way which shall be used in wetlands are those existing roads that can be used with no modification and no impact on the wetland. Contractor shall limit the size of the crossing and adjacent impacted area to the minimum necessary for passage of the trench and associated equipment. E:\25-1-5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 15 of 22 SPECIFICATION ~~~~~~~~~Rev. 2 Oct. 1997 Do not locate above-ground facilities in any wetland unless approved in writing by Esso. 9.5.2 Crossing Procedures Avoid wetland areas to the maximum extent practicable. If a wetland cannot be avoided or crossed by following an existing right-of-way, route the pipeline in a manner that minimizes disturbance to wetlands. Minimize the duration of construction-related disturbance within wetlands to the maximum extent practicable. Limit the width of the construction right-of-way to the minimum required for passage of the trench and associated equipment. Limit pulling of tree stumps and grading activities to directly over the trenchline. Do not grade or remove stumps or root systems from the rest of the right-of-way in wetlands unless the ESSO Inspector determines that safety-related construction constraints require removal of tree stumps from under the work-pad. Construction equipment operating in wetland areas shall be limited to that needed to dig trench, install pipe, backfill trench, and restore the Work Site. All other construction equipment shall use access roads located in upland areas to the maximum extent practicable. Where use of access roads in upland areas cannot provide appropriate access, all other construction equipment may pass through the wetland once, using the right-of-way. If standing water or saturated soils are present, use low-ground-weight construction equipment, or operate normal equipment off of timber mats, rip-rap, prefabricated equipment mats, or geotextile fabric overlain with gravel fill. Geotextile fabric use for this purpose must be flexible and strong enough to allow removal of all gravel fill and fabric from the wetiand during the clean-up phase. Do not use dirt, rock fill, tree stumps, or brush to stabilize the Work Site in wetlands. Attempt to use no more than two layers of timber rip-rap to stabilize the Work Site. In the event that more than two layers of timber rip-rap must be used due to site-specific construction constraints, the following information must be provided as specified at the beginning of these Procedures. E\26-1 -5.WDC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 16 of 22 SPECIF CATION_____ ______ _____ ______ _____ R ev. 2 O ct. 1997 a) Contractor shall explain why altemative construction methods that do not involve the use of timber rip-rap (e.g., prefabricated equipment pads, low-ground-weight equipment) cannot be used in these areas; b) A detailed plan which addresses the procedures to be used to remove all timber rip-rap, specific measures (including the import of additional fill material) to restore pre-construction surface contours, and specific measures (including the planting of herbaceous and shrub species) to ensure successful revegetation of the construction right-or-way with native wetland plant species within 3 years after construction. Remove all timber mats, rip-rap, prefabricated equipment mats, and geotextile fabric overlain with gravel fill upon completion of construction. Assemble pipeline in upland area and use "push-pull" or "float" techniques to place pipe in trench where water and other site conditions allow. 9.5.3 Spoil Pile Placement and Erosion Control Contractor shall comply with the requirements of the Soil Erosion Mitigation Specification in order to minimize impacts to wetlands. Contractor shall also implement the additional measures to control sediment loading in wetlands as described here. Contractor shall place all spoil from water-body crossings, and wetlands crossings at least 3 meters away from wateres edge, as a minimum, and shall contain spoil within sediment filter devices. Where the extent of the wetland makes placement away from the waters edge impractical, Contractor shall place spoil in areas where impact will be minimal and control water flow in the area with sediment filters. Contractor shall install and maintain, in proper working order, temporary sediment filter devices adjacent to all wetlands in the vicinity of disturbed soil to avoid sediment flow into wetlands. Contractor shall install and maintain in proper working order permanent slope breakers and trench breakers near the boundary between wetlands and adjacent disturbed upland areas to avoid sediment flow into the wetland. E:\26-1-5 DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 17 of 22 SPECIFICATION ________________ Rev. 2 Oct. 1997 When dewatering trench, Contractor shall discharge the water in such a manner that no heavily silt-laden water flows into any wetland. 9.5.4 Wetlands Restoration Where the pipeline trench may drain a wetiand, Contractor shall construct trench breakers and/or seal the trench bottom as necessary to maintain the original wetland hydrology. Do not use fertilizer or lime within wetlands. Restore surface contours and topsoil as required by the Surface Restoration and Site Reclamation sections, above. 9.5.5 Maintenance Practices Vegetation maintenance practices over the full width of the permanent right-of-way in wetlands are prohibited. However, to facilitate periodic pipeline corrosion/leak surveys, a corridor centered on the pipeline up to 3 meters wide may be maintained in a herbaceous state. In addition, trees that are located within 5 meters of the pipeline and are greater than 5 meters in height may be selectively cut and removed from the wetland. 10.0 Surface Restoration 10.1 Pipeline (and Other Buried Facilities) Right-of Way Following backfill of trench, the disturbed portion of the Work Site shall be returned to natural contours by Contractor where possible. Re-contouring to natural lines and grade shall be accomplished without disruption to adjacent undisturbed habitat. The area shall be compacted sufficiently to minimize erosion or excessive future settlement. Permanent water breakers and/or terraces shall be constructed on sloping ground to prevent erosion as specified in the Soil Erosion Mitigation Specifications. Natural drainage pattems shall be restored and in potentially high erosion areas (such as the banks of water courses) earth-filled sacks, stone rip-rap or other stabilization methods shall be used to ensure that the soil does not wash out before becoming consolidated. All restoration activities other than foot traffic shall be limited to previously disturbed portions of the Work Site. When restoring disturbed right-of-way, Contractor shall: * use clean, efficient construction techniques to minimize short term disruptions and prevent long term degradation of the environment; E\26-1 -5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 18 of 22 SPECIFICATION Rev. 2 Oct. 1997 * restore all banks of watercourses, hills and steep slopes to as near their original condition as practical; * properly rp-rap and terrace banks and slopes to control erosion; restore terraces, levees and drainage ditches to as near their original conditions as practical; * clean-up the right-of-way immediately following the backfill of the trench; and remove spoil, debris, piling, cofferdams, and false-work from watercourses to prevent interference of the normal water flow and watercourse use. Watercourses disturbed by construction of the pipeline (or other buried facility) shall be opened across the right-of-way and trenched for the proper flow of water. Furrows and terraces shall be constructed across the right-of-way as necessary to divert the flow of water away from the backfilled trench and into natural drainage courses to prevent excess erosion along the facility. Contractor shall replace the soil from side hill cuts as directed by ESSO. All side hill cuts and fills shall be sloped sufficiently to prevent injury to personnel, livestock, and wildlife and to prevent erosion. Topsoil shall be spread over cleared areas once any re-grading or deep ripping of compacted areas is complete in accordance with the Soil Erosion Mitigation Specification Chipped vegetative debris may be mixed with the topsoil and spread over cleared areas. Contractor shall evenly spread topsoil over the right- of-way to restore the natural contour of the ground and allow normal surface drainage. Where disturbed right-of-way passes across watercourses or through marshland, Contractor shall provide, place, and compact all fill material necessary to restore waterway and marshland banks to natural lines and grades or to the lines and grades specified on the drawings. Fill material shall be environmentally compatible with existing bank material to ensure consistency in vegetative growth. Where required by the drawings and/or specified in the Soil Erosion Mitigation Specification, Contractor shall utilize soil and bank stabilization to prevent bank slough and wash and to enhance vegetation growth. 10.2 Camps, Laydown Areas, Temporary Access Roads Unless ESSO has specified that an area or a part of an area of the Work Site used during the construction phase of the project will also be needed for the operations phase, all affected areas shall be restored by Contractor. These areas (camps, laydown areas and storage yards, temporary access roads, fabrication areas, etc.) shall be returned to natural contours where possible. Re- E:\26-1 5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 19 of 22 SPECIFICATION Rev. 2 Oct. 19_97_ contouring to natural lines and grade shall be accomplished without disruption to adjacent undisturbed habitat. If these areas have been compacted during use, they shall be scarified to loosen the soil. Permanent water breakers and/or terraces shall be constructed across areas of sloping ground to prevent erosion as specified in the Soil Erosion Mitigation Specification. Natural drainage patterns shall be restored and, in potentially high erosion areas, earth-filled sacks, stone rip-rap or other stabilization methods shall be used. All restoration activities other than foot traffic shall be limited to previously affected areas and marked construction zones. Contractor shall replace the soil from side hill cuts on the Work Site as directed by ESSO. All side hill cuts and fills shall be sloped sufficiently to prevent injury to personnel, livestock, and wildlife and to prevent erosion. Topsoil shall be spread over cleared areas once any re-grading or deep ripping of compacted areas is complete. Contractor shall evenly spread topsoil over the area to restore the natural contour of the ground and allow normal surface drainage. Flat areas and slopes up to 3(H):1 (V) grade shall be loose and friable to a depth of at least 120 millimeters. Compacted Work Site soils shall be loosened on the surface by scarifying (raking, disking, or other acceptable means). Slopes steeper than 3(H):1(V) shall have at least 70 millimeters of loose, friable, surface soil. 10.3 Borrow Pits/Areas When borrow pits/areas will no longer be needed, the site shall be graded to ensure that it will not accumulate standing water or divert the flow of watercourses that may engulf it. If tracks were cut into river/stream banks, they shall be reinstated and measures take to prevent erosion, as necessary. The sides of the pits/areas shall be sloped sufficiently to prevent injury to personnel, livestock, and wildlife and to prevent erosion. The reclamation provisions (including topsoil conservation and replacement) described in this specification for other Work Site areas shall also apply to borrow sites. 11.0 Site Reclamation All areas not under permanent facilities shall be restored to an equal or better soil condition than when disturbance occurred so that the pre-disturbance vegetation type can re-establish itself in a short period of time. In order to facilitate revegetation, mitigations that may apply for reclamation of portions of the Work Site include fertilizing and seeding, mulching, and surface texturing. Locations where one or more of these E\26-1 -5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 20 of 22 SPECIFICATION ~~~~~~~~~Rev. 2 Oct. 1997 techniques will be required to facilitate revegetation shall be identified in the field by ESSO and Contractor environmental monitors (or other qualified personnel approved by ESSO). Close attention shall be paid to areas where erosion potential is high (e.g. at the crossings of watercourses, areas of the Work Site that are seen to be subject to active erosion, etc.), and where unauthorized access to the Work Site needs to be actively discouraged (e.g. where the Work Site passes through relatively undisturbed vegetation and intersects a road or track). Large plots of land such as storage yards, borrow pits and main camp sites shall be actively revegetated. 11.1 Fertilization and Seeding In disturbed Work Site areas with very little topsoil or naturally sparse vegetation, Contractor may need to fertilize with an N-P-K fertilizer at a loading rate suitable for new grass growth, and seed the area with an ESSO approved native seed mixture. In the absence of soil tests, 0.11 tonnes per hectare of 10- 10-10 or equivalent fertilizer shall be used in these areas. If seeding/planting of the area by Contractor is necessary, fertilizer shall be applied before seeding/planting and harrowed or disked uniformly into the soil to a minimum depth of 80 millimeters on slopes flatter than 3(H):1(V). On slopes steeper than a 3(H):1 (V) grade, fertilizer shall be worked the best way possible. If seeding/planting of the area is necessary, native seed mixtures or plantslspnigs used shall be compatible with local soil conditions and climatic zones, and shall be free of weeds. Seed shall be applied uniformly in a manner appropriate for the type of seed used, and shall be placed in a firm, moist seedbed to a depth suitable for the seed selected. Plants/sprigs shall be planted at a suitable density and in a manner conducive to successful growth. Any seeded/planted area which fails to show a uniform stand of vegetation after one growing season shall be assessed to determine obvious causes for failure. The site shall then be reseeded/replanted, refertilized, remulched and/or reharrowed, as necessary, and/or the revegetation approach shall be modified to improve the chances of successful revegetation in the next growing season. A uniform stand of vegetation will be considered growth which shows no deterioration or bare spots greater than 1 square meter (10.76 ft) in size and provides a minimum of 80 percent grown cover. Areas not satisfying this definition may be approved by ESSO as satisfactorily revegetated if Contractor can show that these areas are not significantly different from the surrounding environment (outside the project impacted area). One year after initial site reclamation, Contractor shall inform ESSO of the locations of all sites where vegetation is still below the target level so that ESSO may continue site reclamation efforts, as necessary. E:A26-1-5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 21 of 22 SPECIFICATION Rev. 2 Oct. 1997 11.2 Mulching If mulching of an area by Contractor is necessary, the following types of mulches may be acceptable: . Hay or other native pasture mixture, unrotted with a low moisture content, applied at a rate of 0.4-0.5 kg/m2. * Straw from wheat, oat, or rice (free of viable seed), unrotted with a low moisture content, applied at a rate of 0.5-0.7 kg/m2. * Wood cellulose fiber, applied at a rate of 0.17 kg/rn2. * Stockpiled vegetation which has been chipped or shredded, applied at a rate of 0.5 kg/m2. On slopes greater than 3(H): 1(V) prefabricated blankets (mats) of straw, coconut, wood or other natural plant fibers sewn together with a biodegradable netting may be used. Prefabricated blankets (mats) shall be stapled in place with No. 11 gauge wire staples 150 to 250 millimeters long. The staple pattern shall be in accordance with the manufacturer's recommendations. Mulch shall be anchored immediately after mulch placement using one of the following methods as approved by ESSO: 11.2.1 Crimping A notched, straight disk crimper set to push part of the broadcast mulch fiber 50 to 80 millimeters into the soil shall be used to anchor yet leave part standing upright. 11.2.2 Imprinting Imprinting is expected to be the preferred method of surface soil/seedbed preparation on many of the disturbed portions of the project. Imprinting with a shaped roller is a cost effective practice that is well-suited for use on large portions of the Chad Development Project. The imprinter roller forms funnel shaped seedbed and seedling cradles which concentrate water and improve infiltration. At the same time, the imprinter provides simultaneous mulching of above ground plant material without topsoil inversion in a single operation. Because the surface roughness reduces wind-speed, sand deposition and the capture of wind blown seeds in the imprints are facilitated. Land imprinters generally use three basic tooth geometries to imprint conical, pyramidal or V-trough shaped funnels in the soil surface. When used in conjunction with seeding, seed shall be disseminated directly on top of the roller which allows the seed mix to be imbedded in the surface of the imprint. E:A26-1-5.DOC:mj ESSO EXPLORATION & ECS 26-1-5 PRODUCTION CHAD INC. ENVIRONMENTAL IMPACT MITIGATION Page 22 of 22 SPECIFICATION Rev. 2 Oct. 1997 11.2.3 Mulch binders/tackifiers Mulch can be anchored by injecting tackifiers into the mulch stream as the mulch leaves the blower. Non-asphaltic tackifiers consisting of vegetable gum or silicate-based polymers blended with hydrophilic polymers may be used. These shall be applied using the manufacturer's recommended rates. 11.3 Surface Texturing It is expected that mitigation recommendations will include the use of an imprinter over much of the Work Site requiring restoration (including those areas where fertilizer and seed are not applied). 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