E1727 v7 DA NANG CITY PEOPLE'S COMMITTEE OFFICE DA NANG PRIORITY INFRASTRUCTURE INVESTMENT PROJECT MANAGEMENT UNIT (PIIP-PMU) ENVIRONMENTAL IMPACT ASSESSMENT REPORT DA NANG PRIORITY INFRASTRUCTURE INVESTMENT PROJECT Phase 2B CREDIT NO. CR 4402-VN PREPARED BY: INFRA- TLJSC, July, 2011 §IA ofDa Nang Priority Infrastructure Investment Project Phase 2B ABBREVIATIONS CPC City People Committee CPRGS Comprehensive Poverty Reduction and Growth Strategy DONRE Department of Natural Resources and Environment DPI Department of Planning and Investment EA Environmental Assessment EIA Environmental Impact Analysis EMP Environmental Management Plan EMDP Ethnic Minority Development Plan FDI Foreign Direct Investment GoV Government of Vietnam IDA International Development Association LIAs Low Income Areas GDP Gross Domestic Product NGO Non Governmental Organization PAP Project Affected Persons PFS Pre-Feasibility Study PUP Priority Infrastructure Investment Project PIW-PMU Priority Infrastructure Investment Project Management Unit PIR Project Investment Report RAP Resettlement Action Plan R&R Resettlement and Rehabilitation SA Social Assessment TORs Terms of Reference WB World Bank WWTP Wastewater Treatment Plant EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B TABLE OF CONTENTS CHAPTER 1. INTRODUCTION............................................................................................ 8 1.1 BACKGROUND OF THE PROJECT ......................................................................... 8 1.2 OBJECTWE OF THE PROJECT ................................................................................ 8 1.3. PROJECT COMPONENTS ......................................................................................... 8 1.4. TOTAL INVESTMENT AND CAPITAL STRUCTURE ........................................... 9 1.5. LEGAL AND TECHNICAL BASES ........................................................................ 11 1.5.1 Legal base ........................................................................................................... 11 1.5.1.1 Govemmentallegislation................................................................................... 11 1.5.1.2 Legal documents of the Project.. ....................................................................... l1 1.5.1.3 World Bank policies .......................................................................................... 12 1.5.2 Environmental standards.................................................................................... 13 1.5.3 Sources ofdocument and data ............................................................................ 14 1.6 ORGANISATION OF EIA IMPLEMENTATION ................................................... 15 1.6.1 Client .................................................................................................................. 15 1.6.2 EIA Consultant Team ............................................................................................. 15 CHAPTER 2. PROJECT DESCRIPTION .......................................................................... 16 2.1 PROJECT LOCATION ............................................................................................. 16 2.2 SCOPE OF EIA .......................................................................................................... 17 2.3 COMPONENT A - URBAN UPGRADING ............................................................. 18 2.3.1 Scale ofupgrading ................................................................................................... 18 2.3.2 Upgraded items ........................................................................................................ 19 2.4 COMPONENT B: ENVIRONMENTAL MANAGEMENT ..................................... 20 2.4.1 Sub-component B52.................................................................................................. 21 2.4.2 Sub-component B53 ............................................................................................ 23 2.4.3 Hoa Xuan WWTP and Lien Chieu WWTP ............................................................... 24 2.4.3.1 Design capacity .................................................................................................. 24 2.4.3.2 Load .................................................................................................................. 24 2.4.3.3 Description of treatment process ....................................................................... 24 2.4.3.4 Allocation of constructed areas in the plant ...................................................... 27 2.4.4 Pilot upgrading existing Son Tra WWTP ........................................................... 32 2.4.4.1 Objective of upgrading ...................................................................................... 32 2.4.4.2 Upgrading scope ................................................................................................ 32 2.4.4.3 Brief description ................................................................................................ 32 2.5 COMPONENT C SOUTHERN LINK ROAD AND HOA PHUOC, Co Co BRIDGES........... 33 2.5.1 Southern Link Road ............................................................................................ 33 2.5.2 Hoa Phuoc Bridge and Co Co Bridge.................................................................... 35 CHAPTER 3. ALTERNATIVE ANALYSIS ....................................................................... 38 3.1 WITHOUT PROJECT ............................................................................................... 38 3.2 ALTERNATIVES ..................................................................................................... 38 3.2.1 Component A ...................................................................................................... 38 3.2.1.1 Process for selecting upgraded items ................................................................ 38 3.2.1.2 Analysis and selection factors ........................................................................... 38 3.2.2 Component B ...................................................................................................... 39 3.2.2.1 Sub-component B52 .......................................................................................... 39 2 EIA ofDa Nang Priority Inj;'astructure Investment Project - Phase 2B 3.2.2.2 Sub-component B53 .......................................................................................... 39 3.2.2.3 Sub-component B54, B55a ................................................................................ 39 3.2.3 Component C ...................................................................................................... 48 3.2.3.1 Southern Link Road ........................................................................................... 48 3.2.3.2 Phuoc Hoa Bridge and Co Co Bridge ............................................................... .48 CHAPTER 4. NATURAL~ SOCIO-ECONOMIC AND ENVIRONMENTAL CONDITIONS OF THE PROJECT AREA ........................................................................49 4.1 NATURAL CONDITION ......................................................................................... 49 4.1.1 Climate - meteorology ....................................................................................... 49 4.1.2 River network and Hydrology ............................................................................. 51 4.1.2.1 River network .................................................................................................... 51 4.1.2.2 Hydrology .......................................................................................................... 51 4.2 SOCIAL ECONOMIC STATUS ............................................................................ 51 4.2.1 Economy ............................................................................................................. 51 4.2.2 Population and Density ...................................................................................... 52 4.2.3 Land Use Plan .................................................................................................... 52 4.2.4 Culture - Education ............................................................................................ 53 4.2.5 Healthcare .......................................................................................................... 54 4.2.6 Tourism ............................................................................................................... 54 4.2.7 Traffic status ....................................................................................................... 54 4.2.8. Electricity supply and lighting status ................................................................. 55 4.2.9. Water supply ....................................................................................................... 55 4.2.9.1 Water source ...................................................................................................... 55 4.2.9.2 The status of clean water production and provision .......................................... 56 4.2.10 Wastewater collection and treatment system ......................................................... 57 4.3 ENVIRONMENTAL BASELINE STATUS ............................................................. 58 4.3.1 Baseline conditions in the city ............................................................................ 58 4.3.1.1 Ambient air quality ............................................................................................ 58 4.3.1.2 Surface water quality ......................................................................................... 58 4.3.1.3 Ground water quality ......................................................................................... 59 4.3.2 The environmental baseline in the project area ................................................. 59 4.3.2.] Quality of air environment ................................................................................ 59 4.3.2.2. Quality of surface water ................................................................................... 61 4.3.2.3 Quality of ground water ..................................................................................... 63 4.3.2.4 Quality of dredged material ............................................................................... 63 CHAPTER 5. ENVIRONMENTAL IMPACT ASSESSMENT ....................................... 65 5.1 OVERVIEW OF PROJECT IMPACTS .................................................................... 65 5.2. IMPACT ASSESSMENT .......................................................................................... 66 5.2.1 Component A ...................................................................................................... 66 5.2.1.1 Pre-construction................................................................................................. 66 5.2.1.2 Construction phase ............................................................................................ 67 5.2.1.3. Operation phase ................................................................................................ 69 5.2.2 Component B ............................................................................................................ 7J 5.2.2.1 Pre construction phase .................................................................................... 71 5.2.2.2 Construction and Operation ............................................................................... 72 2.480KG ................................................................................................................................. 92 3 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 5.2.3. Component C........................................................................................................... 95 5.2.3.1 Pre - construction phase .................................................................................... 95 5.2.3.2 Construction phase ............................................................................................ 96 5.2.3.3 Operation phase ............................................................................................... 106 5.3 TANGIBLE CULTURAL RESOURCES ............................................................... 108 5.3.1 Tombs ................................................................................................................... 108 5.3.2 Cultural and social works .................................................................................... 108 CHAPTER 6. MITIGATION MEASURES FOR NEGATIVE IMPACTS, PREVENTION AND RESOLUTIONS FOR ENVIRONMENTAL RISKS .................. 110 6.1. COMPONENT A ..................................................................................................... 110 6.2. COMPONENT B ..................................................................................................... 111 6.2.1 Pre - construction phase ..................................................................................... 111 6.2.1.1. Clearance and resettlement. ............................................................................ 111 6.2.1.2. Technical design ............................................................................................. III 6.2.2 Construction phase ........................................................................................... 114 6.2.3 Mitigation measures for operation phase ......................................................... 115 6.2.3.1 For B52, B53 ................................................................................................... 115 6.2.3.2 Trung Nghia Lake embankment. ..................................................................... 116 6.2.3.3 For B53, B54 .................................................................................................. 116 6.2.3.4 Sub-component B55b (Pilot upgrading of Son Tra WWTP) ......................... 119 6.3. COMPONENT C ..................................................................................................... 119 6.3.1. Pre- construction ............................................................................................. 119 6.3.1.1. Compensation and land clearance .................................................................. 119 6.3.1.2 Design for reducing flooding affect ................................................................. 120 6.3.1.3 Waterway design ............................................................................................. 120 6.3.2. Constnlction phase ................................................................................................ 120 6.3.2.1 Southern Link Road ......................................................................................... 120 6.3.2.2. Construction of bridges .................................................................................. 121 6.3.3. Operation phase (for both the Southern Link Road and Bridges) ...................... 122 CHAPTER 7. ENVIRONMENTAL MANAGEMENT PLAN ....................................... 125 7.1 MITIGATION MEASURES ................................................................................... 125 7.2 INSTITUTIONAL ARRANGEMENT .................................................................... 136 7.2.1 Construction phase ........................................................................................... 136 7.2.2 Operation phase ............................................................................................... 138 7.3 ENVIROMENTAL MONITORING PROGRAM ................................................... 138 7.4 CAPACITY BUILDING ......................................................................................... 140 7.5 ENVIRONMENTAL MANAGEMENT EXPENDITURE .................................... 141 CHAPTER 8. PUBLIC CONSULTATIONS AND DISCLOSURE ................................ 142 8.1 PUBLIC CONSULTATION .................................................................................... 142 8.2 DISCLOSURE ........................................................................................................ 147 CHAPTER 9. CONCLUSIONS, RECOMMENDATIONS AND COMMITMENTS ... 148 9.1 CONCLUSIONS ..................................................................................................... 148 9.2 RECOMMENDATION .......................................................................................... 150 9.3 COMMITMENTS ................................................................................................... 151 4 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B LIST OF TABLES Table 1-1 Implementation costfor Components (million USD) ......................................... 9 Table 1-2 Contents ofthe investment works in stages ........................................................ 9 Table 1-3 WB's environmental operational policies ......................................................... 12 Table 2-1 Scope ofwork ofthe project ............................................................................. 17 Table 2-2 Scale of09 LIAs ................................................................................................ 18 Table 2-3 Social infrastructures in 09 LIAs ...................................................................... 20 Table 2-4 Invested items ofsub- component B52 .............................................................. 21 Table 2-5 Description ofsub- component B53 .................................................................. 23 Table 2-6: load ofHoa Xuan WWTP and Lien Chieu WWTP .......................................... 24 Table 2-7 Summary ofin vested items ofHoa Xuan WWTP and Lien Chieu WWTP for initial capacity of20,000m3Iday ....................................................................................... 28 Table 2-8 Briefdescription ofthe upgrading items .......................................................... 32 Table 2-9 Cross section design ofthe road ....................................................................... 34 Table 2-10 Briefdescription ofdesign parameters for Hoa Phuoc Bridge and Co Co Bridge ................................................................................................................................ 35 Table 3-1 Evaluation for site selection ............................................................................. 40 Table 3-2 Efficiency oftreatment and levels ofenvironmental impact ........................... 43 Table 3-3 Advantage and disadvantage ofeach smell removal method ........................... 44 Table 3-4 Characteristic ofsome chemical used for disinfection ..................................... 45 Table 4-1 Population and density ..................................................................................... 52 Table 4-2 Land Use Plan .................................................................................................. 53 Table 4-3 Information oftraffic status .,............................................................................ 54 Table 4-4 Operating status ofsurface water treatment plants in Da Nang City .............. 56 Table 4-5 Orientation for water supply in Da Nang city .................................................. 56 Table 4-6 The power treatment ofthe existing WWTP ..................................................... 57 Table 4-7 Quality ofdredged material.. ............................................................................ 63 Table 5-1 Summary ofimpact on clearance and relocation ofthe project ....................... 66 Table 5-2 Social infrastructures ........................................................................................ 70 Table 5-3 Summary ofaffected land and HOllseholds ....................................................... 71 Table 5-4 Balance ofexcavation and back-jilling quantity .............................................. 73 Table 5-5 Air pollution and dust loading in transporting materials ................................. 74 Table 5-6 Potential impacts in the construction phase ..................................................... 81 Table 5-7 Balance ofexcavation and back-jilling quantity .............................................. 81 Table 5-8 shows sources ofsmells. ................................................................................... 83 Table 5-9 Summary ofsewage capacity, input and olltput parameters ............................ 84 Table 5-10 Generation ofsolid waste in Hoa Xllan and Lien Chieu WWTPs .................. 92 Table 5-11 Risk assessment in contacting with microorganism in wastewater or sludge 94 Table 5-12 Summary affected households and land.......................................................... 95 Table 5-13 Borrow pits ..................................................................................................... 96 Table 5-14 The material transportation ............................................................................ 99 5 EIA ofDa Nang Priority Infrastructure Investment~P_r--"oj,-'e_ct_P_h_as_e_2_B_ _ _ _ _ _ _ _ _ __ Table 5-15 Quantity ofexcavated and transported soil on the site ofSouthern Link Road ...................................................................... ................................................................... 101 Table 5-16 Pollution emissionfactors ofdomestic wastewater ...................................... 102 Table 5-17 Concentration ofpollutants in domestic wastewater.. .................................. 102 Table 5-18 Estimated transportation flow-rates ............................................................. 106 Table 5-19 Air pollutant loadings ................................................................................... 106 Table 5-20 Noise level on the roadside ........................................................................... 107 Table 5-21 Noise level at night .............................................. ......................................... 107 Table 5-22 The list ofcultural works .............................................................................. 108 Table 6-1 Mitigation measures for constmction and operation ofComponent A ......... . 110 Table 6-2 Tidal level in Da Nang city ............................................................................. 111 Table 6-3 Water levels at the Son Tra and Cam Le Stations .......................................... 111 Table 6-4 Mitigation measures for sub- component B52 and B53 ................................. 114 Table 6-5 Mitigation measures for sub- component B54, B55a ..................................... 115 Table 6-6 The mitigation measures for sub-component B55b ........................................ 115 Table 6-7 Hydrographical survey data ........................................................................... 120 Table 6-8 Mitigation for the Southern Link Road .................................................. ......... 120 Table 6-9 Statistical table ofdrainage longitudinal culverts .......................................... 123 Table 6-10 Statistics ofdrainage transverse culverts in the area ................................... 123 Table 7-1 Summary ofmitigation measures.................................................................... 126 Table 7-2 Responsibilities ofstakeholders in EMS......................................................... 137 Table 7-3 Sampling positions and number ofsample ..................................................... 139 Table 7-4 Capacity Building program for the operation ofEMP................................... 140 Table 7-5 Estimation ofbudgetfor implementing EMP ................................................. 141 Table 8-1 Locations, time and number ofinterviews in Period 1 ................................... 142 Bemg 8-2 Consultation results in Period 1...................................................................... 143 Table 8-3 Results ofPublic Consultation Period 2 ......................................................... 145 Table 9-1 Weakness and Strength for selection oflocations .......................................... 149 6 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B LIST OF FIGURES Figure 2-1.' Location map ofDa Nang city in Vietnam and in the region ........................ 16 Figure 2-2 Layout of PlIP - DN phase 2B ..................................................................... 18 Figure 2-3 Layout ofcombined drainage and sewerage system ....................................... 20 Figure 2-4 Typical cross-section ofLake Embankment.. .................................................. 23 Figure 2-5 Processflow diagram ofnew WWTP .............................................................. 26 Figure 2-6 General layout ofHoa Xuan WWTP ............................................................... 30 Figure 2-7 Genera/layout ofLien Chieu WWT................................................................ 31 Figure 2-8 Layout ofSouthern Link Road ........................................................................ 34 Figure 2-9 Cross section ofone Hoa Phuoc Bridge pier.................................................. 36 Figure 2-10 Cross section ofone Co Co bridge pier........................................................ 37 Figure 3-1 Sequencing Batch reactor (SBR) cycles ..........................................................42 Figure 3-2 Typical EA with concentric multi-channel configuration ............................... 42 Figure 4-1 Air temperature in Da Nang. 2009 .................................................................49 Figure 4-2 Chart on rainfall in months ofyear 2009 ....................................................... 50 Figure 4-3 Strongest wind level in months (year 2009) .................................................... 50 Figure 4-4. The diagram ofwastewater treatment process at the present WWTPs ......... 57 Figure 5-1 and Figure 5-2 Land slide and cracked houses caused by construction culvert boxes.................................................................................................................................. 75 Figure 5-3 Dreged sludge at Le Tan Trung to Tho Quang open canel ............................ 76 Figure 5-4 and 5-5 Risk oftraffic accidents ..................................................................... 77 Figure 5-6 A typical location ofdiversion chamber ......................................................... 79 Figure 5-7 and 5-8 Current situation ofNorthern Trung Nghia Lake ...................... ....... 80 Figure 5-9. Water velocity at 2km upstream ofNam 0 Cu De river mounth, CDM, 2011 ........................................................................................................................................... 89 Figure 5-10 Reserved material pits and transportation routes ........................................ 98 Figure 5-11 and 5-12 Mai Dang Chon road (November, 2010) ..................................... 100 Figure 7-1 EMS in the construction phase ..................................................................... 136 7 EIA ofDa Nang Priority InJ;'astructure Investment Project - Phase 2B CHAPTER 1. INTRODUCTION 1.1 BACKGROUND OF THE PROJECT With a population of 890.470 people, a natural area of 1.283,42 km2 (Statistical Yearbook in 2009) and located in the central region of Vietnam, Da Nang is considered as an important gateway to the sea, to the central highland and countries such as Laos, Cambodia and Thailand. The Socio-economic Development Plan (Phase 2006-20 I 0) had set up targeted annual GDP growth rate about 14-15%. Despite, the environmental degradation caused by the old and degraded infrastructure system affects public health and economic development. Under these circumstances, in 2004, the Government of Vietnam has requested FDI supporting the development project Priority Infrastructure Investment Project in Da Nang. Then there is the investment report (IRlPFS) Da Nang People's Committee adopted by Decision No. 2456/QD-UBND issued April 4, 2007; and credit agreements were signed between the World Bank and Vietnam bank on 28/08/2008 and put into practice on 26/1112008. Priority Infrastructure Investment Project-Da Nang, an active investment in infrastructure sector, has contributed to completing City Development Plan (2006-2013) and Socio­ economic Development Strategy 2020. 1.2 OBJECTIVE OF THE PROJECT • Urban poverty alleviation through upgrading of technical infrastructure, environmental condition and improvement in living condition ofthe urban poor; • Improvement of environmental condition in polluted areas relating to waste water, sewerage issues; • Enhancement of economic growth through investment in development of strategic infrastructure, implementation of improvements and technical assistance to create an attractive investment climate; • Gradual adaptation to urban development planning; • Socialization in process of planning, programming and implementing investment in urban infrastructure upgrading through participatory technical solutions, human resources and fund contribution; • Promotion in participatory project preparation, implementation and management in order to satisfactorily meet people' demand; • Provision of support to institution and enhancement in management capacity to City's administration authorities. 1.3. PROJECT COMPONENTS Da Nang PUP is a multi-sector project with 4 main components, including; • Component A: Urban upgrading (Infrastructure upgrading for low income areas) This component will help upgrading tertiary infrastructure for low-income areas, provide resettlement housing and a micro-finance for housing improvements. 8 EIA ofDa Nang Priority Infrastructure In~'estment Project - Phase 2B_ _ _ ~_ _ _ _ _ __ • Component B: Environmental Management This component will invest in improving environmental condition, including flood control, construction of drainage trunks, wastewater collection as well as wastewater treatment works, • Component C: Roads and bridges for economic development This component will provide new roads to enhance economic growth. • Component D: Institutional development This component assists in enhancing the performance efficiency of the City's departments and sectors in the implementation of the Socio-Economic Development Plan, period 2006 2010 and improving quality of infrastructure services, 1.4. TOTAL INVESTMENT AND CAPITAL STRUCTURE Total investment amount is 218 million USD as estimated, in which: • Loan by World Banle 152 million USD • Counterpart fund of Vietnamese Government: 66 million USD Table I-I Implementation cost for Components (million USD) Components Da Nang IDA Total A. Urban upgrading 26.26 26.42 52.68 •B. Environmental management in the city 16.15 49.26 65.40 i C. Bridge and road 23.56 72.60 96.16 I D. Institutional enhancement 0.06 4.16 4.23 Total cost (including tax) 66.03 152.44 218.47 With the total budget, the project is implemented in 2 phases: • I sl phase: from 2008 to 2010. • 2nd phase: from 20 I 0 to 06/2013. The construction of Phase 1 started in May 2008 and finished in June 2010. At this moment, the project continues to implement Phase 2 that is sub-divided into Phase 2A and Phase 2B. The EIA of phase 2A has been approved by WB and DN PC in November, 2010. This EIA report focuses on assessment of environmental impacts for Phase 2B only. stations 9 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Son Tra district Cam Le district 2.1.2 Construction of drainage system for Lien Chieu district, Son Tra . district and the Lien Chieu district Son Tra district City center - The box culvert on Hoang Hoa Tham - Ham Nghi road and from Tran to Han River The culvert system from Dai Hoc Village Dong Tra Resettlement i Area to Co Co River 1 3.2•2 Sub-component B53: Extension of wastewater system for Lien Chieu district, Cam Le district, Son Tra district, Ngu Hanh Son district . Lien Chieu district Pipeline from the Polytechnic University, Ton Duc Thang road to PhuLocWWTP 3.2.3 3.3 ComponentC Construction ofthe Southern Link Road and Hoa Phuoc bridge, Co Co Source: Statement ofthe Priority Infrastructure Investment Project ofDa Nang- Phase 2, 2007 10 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 1.5. LEGAL AND TECHNICAL BASES 1.5.1 Legal base The legal base for the environmental impact assessment is abided by the Vietnamese regulations and the Environment Safety Policy of the World Bank. 1.5.1.1 Governmental legislation • The Law on Environmental Protection adopted on 2911112005 by the National Asembly of the Socialist Republic of Vietnam and the President signed the Publicization Order on 12/12/2005; • Decree No.21/2008IND-CP dated on 28/02/2008 about Amendment and addition of some articles in Decree No.8012006IND-CP dated on 09/812006 by the Government; • Decree No.29/2011IND-CP dated 18/04/2011 on the regulation ofenvironmental strategy, environmental impact assessment and environmental protection commitment; • Decree No.80/2006IND-CP dated on 09/812006, guiding the implementation of some articles in the Law on Environmental Protection; • Decree No. I 49/20041ND-CP dated 27/0712004 of Licensing for the exploitation of water resources and discharge of wastewater into water sources; • Decree No.67/2003IND-CP dated on 13/6/2003 by the Government about Environmental protection charges for wastewater; • Decision No.23312006/QD-TTg dated 18/1012006 approving the National Programme on labor protection, labor safety, labor sanitation by 2010; • Decision No.2 I 25/QD-BKHCN dated 25 Sept. 2008 on the announcement ofthe National Standards issued by the Minister ofScience and Technology; • Circular No.25/20091TT -BTNMT dated 16/1112009 of the Ministry of Natural Resources and Environment on the national technical specijications on the environment; • Circular No.0512008/TT-BTNMT dated on 0811212008 by the Ministry of Natural Resources and Environment on Guidance for strategic environmental assessment, environmental impact assessment, and environmental protection commitment; • Circular No.16/2009/BTNMT dated 07/10/2009 of the Ministry of Natural Resources and Environment on the environmental national technical regulations; 1.5.1.2 Legal documents ofthe Project [1] Decision No.l800/QD-UBND dated 28/0212008 by Da Nang People's Committee, approving Da Nang Priority Infrastructure Investment Project; [2] Decision No.5240/QD-UBND dated 10/0712009 by Da Nang People's Committee, approving the revision of Da Nang Priority Infrastructure Investment Project; [3] Document No.3622/uBND-QLDT dated 18/06/2010 ofDa Nang People's Committee on the agreement of the construction sites and investment scale of the LIA upgrade work under Component A - Da Nang Priority Infrastnlcture Investment Project (Phase 2); [4] Document No.7190/uBND-QLDT dated 15/11/2010 by Da Nang People's Committee, unijing the portfolio of the drainage items under Subcomponent B52, B53 - Da Nang Priority Infrastructure Investment Project; [5] Decision No.8438/QD-UBND dated 03/1112010 by Da Nang People's Committee, approving Da Nang Wastewater Management Strategy to 2020 and Orientation to 2040; II EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B [6] Decision No.7919/QD-UNBD dated 15/10/2010 by Da Nang People's Committee, approving the boundary map ofrevision land use ofHoa Xuan Wastewater Treatment Station Project; [7] Decision No.8500/QD-UNBD dated 0511112010 by Da Nang People's Committee, approving the boundary map ofrevision land use ofLien Chieu Wastewater Treatment Station Project; [8] Decision No.7922/QD-UBND dated 14/1112006 by Da Nang People's Committee, approving the alignment, ROWand scope ofland use along the Southern Link Road of the City and extended Nguyen Tri Phuong road; [9] Decision No.628/QD-SGTVT dated 08/1112010 of the Department of Transportation ofDa Nang, approving the design tasks, duties and technical method for the survey of the works: building bridges and the Southern Link Road; [10] Decision No.1866/QD-TTg on 08110/2010 by the Prime Minister, approving the master plan for the socio-economic development ofDa Nang City to 2020; [11] Resolution No.1112006/NQ-CP dated 26/05/2006 of the Prime Minister on the revision ofthe land use planning to 20 J0 ofDa Nang city. 1.5.1.3 World Bank policies OP/BP Environmental - Ensure that projects The project falls into Category 4.01 Assessment proposed for financing are A which full EIA is required l . environmentally & socially appropriate; - Inform decision makers the nature of environmental and social risks involved in the Project; - Increase the transparency and participation of all project-affected people in the decision-making OPIBP Physical - Ensure that the physical - In total, 176 graves must 4.11 Cultural cultural heritages are be cleared, of which 27 Resources identified and protected graves for Component B when implementing and 149 graves for projects; Component C. - Ensure the compliance with the laws on protection of physical cultural OP/BP Involuntary - Ensure that the - Component A: 19 houses 4.12 Resettlement displacement is fully and 1O,512m2 of assessed and minimized; residential land are taken. - Ensure the compliance - Component B: 368,717m2 with the laws on of land and ! Although the environmental impacts for each LIA in Component A are insignificant, site-specific; none of them are irreversible; and mitigatory measures can be designed readily, Da Nang DONRE requested to put its assessment into one EIA report for Phase 2B for easier management. 12 §JA ofDa Nang Priority Infrastructure Investment Proj,--'e_ct_P_'_!a_s_e~2_B _ _ _ _ _ _ _~_ __ _ I _ Ensure proper involuntary resettlement; I _ residential land is taken. Component C: 253,31 1m2 i compensation and i of agricultural land, resettlement assisstance; 32,463m2 of residential land and 367 houses are --­ .. affected . 1.5.2 Environmental standards a. Standards and regulations on the water environment QCVN 0 I: 2008IBYT - National Technical Regulation for the drinking water quality QCVN 08: 2008IBTNMT National Technical Regulation for Surface Water Quality QCVN 09: 2008/BTNMT National Technical Regulation on Groundwater Quality QCVN 14: 2008IBTNMT - National Technical Regulation on Domestic Wastewater TCVN 7222: 2002 Environmental requirements for concentrated WWTP QCVN 07:2010IBXD - Vietnam Building Code- Urban Engineering I Infrastructures b. Standards and regulations on the air environment QCVN 05: 2009 - National Technical Regulation on the Ambient Air Quality QCVN 06: 2009 National Technical Regulation on the Allowable Concentration of Certain Hazardous Substances in the Ambient Air. TCVN 6438: 2001 - Road vehicles Maximum limits of exhausted gases. c. Standards and regulations on solid waste management Decision No.27/2004/QD - BXD of the Ministry of Construction on the promulgation of the Vietnamese Construction Standard' hazardous waste landfill design standard". CVN 03: 2008/BTNMT - National Standard on the Limits of Heav Metals in Soil. QCVN 07: 2009 - Actional Standard on the Classification of Hazardous Waste. d. Standards on noise and vibration QCVN 26: 2010 - National Technical Re ulations on Noise ~~~~~~-----+~~ QCVN 27: 2010 - National Technical Re lations on Vibration e. Standards on working sanitation Decision No.3733/2002/QD-BYT issued by the Ministry of Healthcare dated on 10/10/2002 about the application of21 Labour health and safety standards: o Microclimate. o Noise. o Vibration. o Chemicals - Permitted level in working environment. 13 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 1.5.3 Sources of document and data Reference books [1] Report on the monitoring results at 04 wastewater treatment stations in Da Nang City provided by Da Nang Department of Natural Resources and Environment and Da Nang Environment Technology Center, 06/2010. [2] The summary report on the implementation the socio-economic tasks, budget income and expenditure in 2008 and the plan for the socio-economic development and income and expenditure budget in 2009 ofHoa Xuan ward. [3] The summary report on the implementation of the socio-economic tasks, defence and security in the third quarter 2010 and the direction for the remaining tasks in 2010, the People's Committee ofHoa Quy Ward, 9/2010. [4] The summary report on the implementation of the socio-economic tasks, defence and security in the third quarter 2010 and the direction for the remaining tasks in 2010, Hoa Phuoc People's Committee, 9/20 lO. [5] The summary report on the implementation of the socio-economic tasks, defence and security in the third quarter 2010 and the direction for the remaining tasks in 20 lO of Hoa Hai ward, Tho Quang ward, Khue My ward, Hoa Cuong Nam ward; Hoa Minh ward, 6/9010. [6] The report on wastewater management strategy in Da Nang City, Da Nang Priority Infrastructure Investment Project - Component B, Development of Wastewater System, CDM-9/2010. [7] Research report on the wastewater management strategy and the linking developing strategy in Da Nang City, Da Nang Priority Infrastructure Investment Project ­ Component B, Development of Wastewater System, CDM-4/2010. [8] Report on the environmental status in Da Nang city in 2008. [9] Report on the Environmental Impact Assessment of Da Nang Priority Infrastructure Investment Project - Phase 2A, Infra-Thang Long, 10/2010. [10] Vietnam's construction standards: Drainage - external networks and works - Design Standard TCXDVN 51-2008, the Ministry of Construction, 1/2008. [11] The information and data provided from departments, branches of Da Nang city. [12] Da Nang Statistical Yearbook, 2009. [13] Assessment of Sources ofAir, Water, and Land Pollution A Guide to Rapid Source Inventory Techniques and their Use in Formulating Environmental Control Strategies WHO,1993. [14] Operation ofMunicipal Wastewater Treatment Plants. Water Environment Federation (WEF), 1996. USA. [15] Principles of Surface Water Quality Modeling and Control. Thomann R.V and Mueller J.A, 198. New York. [16] Orientation for the Development of Drainage for Viet Nam Urban until 2020 Ministry ofConstruction (MOC). [17] Wastewater Engineering, Metcalf and Eddy, 2000, 2003. Project owner's resources of data [1] Inception Report (1) Preparation of Investment Project Reports, Basic Designs, Detailed Designs, Bidding Plan and Bidding Documents for Phase 2 of the Project; and (2) Preparation of Hydraulic Model of the Drainage System of the Whole City/Prevention of Sand Deposition at the Mouth of the Phu Loc River. [2] Report of environmental analysis. [3] Environmental impact assessment report of Da Nang Priority Infrastructure Investment Project - Phase 1. 14 _EIA ofDa Nang Priority Infrastructure_f_n_ve_st_m_e_n_tP_r--,oJ<..-·e_c_t-_P_ha_s_e_2_B_.._ _ _ _ _ _ _ __ [4J Da Nang Priority Infrastructure Investment Project -Subcomponent 7B. [5J Boundary map of the land use planning adjusted for Hoa Xuan Treatment Station - Hoa Xuan ward, Cam Le district, 2010 (Decision No.7919/QD-UBND dated 15/10/2010). [6] Boundary map of the land use planning for Lien Chieu Treatment Station - Hoa Hiep Nam ward, Lien Chieu district, Da Nang city (Decision No. 8500/QD-UBND 05/111 2010). [7] Guidelines for EIA (Phase 2). [8] The statement of the basic design of Subcomponent B52 (opening storm drainage routes in Lien Chieu, Son Tra, Ngu Hanh Son and Cam Le districts) CDM, 03/2011. [9] The statement of the basic design of Subcomponent B53 (opening and expanding storm drainage routes in Lien Chieu, Son Tra, Ngu Hanh Son and Cam Le districts) CDM, 03/2011. [10] The statement of the basic design of Subcomponent B54 - Hoa Xuan Treatment Station, CDM, 03/2011. [11] Final CIPR - Component B - Drainage, Flood Prevention, Wastewater Collection and Treatment. 1.6 ORGANISATION OF EIA IMPLEMENTATION 1.6.1 Client Project Owner: Da Nang Ministry of Transportation of Da Nang City Representative of Client: PMU of Da Nang Priority Infrastructure Investment Project. Head of Executive Board: Luong Thach Vy Address: 54 Thai Phien, Hai Chau District, Da Nang City Telephone: 0511 562 677 -562679, Fax: 0511 562678 Designing Consultant: SNC-LavaLin International Consultant and TECC05, OCI-2007 & ADCOM Sub-consultants (Component B) and CDM Consultant (Component C) 1.6.2 EIA Consultant Team Thang Long Infrastructure Development JSC. (Infra-Thanglong) Address: Suite 1001, Building 101, Lang Ha Street, Hanoi, Vietnam Tel: 043 5624709 Fax: 043 5624711 E-mail: info@infra.com General director: Mr. Nguyen Quang Huan Subsidiary Company: Saigon - Thanglong JSC. Address: 32 Nguyen Trong Loi, Ward 4, Tan Binh district, HCM city Address: 083 9484740 fax: 083 8119318 E-mail: sgtl@thanglongsg.com Director: Mr. Duong Dinh Dung. The detail ofEIA Consultant Team is in Appendix 1-2. 15 ElA ofDa Nang Priority Infrastructure Investment Project Phase 2B CHAPTER 2. PROJECT DESCRIP1"ION 2.1 PROJECT LOCATION Phase 2B of DN PIIP consists of three components A, B and C, which is located in 6 inner districts of the city: Hai Chau, Thanh Khe, Son Tra, Ngu Hanh Son, Lien Chieu, Cam Le with the urban area2 of 241. 51 km2 and one rural district - Hoa Vang. Da Nang City is located in the middle of the country, on the North - South Axis. It is 764km far from Hanoi to the North, 964 km far from Ho Chi Minh City to the South, and 108km from Hue city to the Northwest. Da Nang city locates from 15°55' to 16°14' Northern Latitude, 10~18' to 108°20' Eastern latitude and the following borders: - Bordering Thua Thien - Hue to the North, Bordering Quang Nam to the West, Bordering the China Sea to the East. ~ -. '­ -~ ." ,"­ o • \­ \ Figure 2-1: Location map ofDa Nang city in Vietnam and in the region 2 Source: Statistical Yearbook of Da Nang, 2009 16 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B _~_ _ _ _ _ ___ _ 2.2 SCOPE OF EIA The scope of EIA and its layout are presented at Table 2-1 and Figure 2-1 respectively. - T abI e 2 1 Scopeo f work o f the project Package District Constructions Component A: Urban Upgrading Hai Chau, I Upgrading 09 LIAs in 09 wards of 05 districts: Cam Le, -I Hai Chau district: Binh Hien ward (LIAl), Binh Thuan ward Lien Chieu, (LIA2), Hoa Cuong Bac ward (LIA3) . Son Tra, - Cam Le district: Hoa Tho Dong ward (LIA4), Thanh Khe - Lien Chieu district: Hoa Hiep Bac ward (LIA5), - Son Tra district: An Hai Bac ward (LIA6); Hai Dong ward (LIA 7), Tho Quang ward (LIAS) - Thanh Khe district: Tam Thuan ward (LIA9). .... Component B: Environmental Management B52 Sub-component B52: Extension of drainage systems in Lien Chieu, Son Tra, Ngu Hanh Son districts Lien Chieu From the Polytechnic University to Ton Duc Thang road - Hoa Phu lake Package B14 Construct and u.Qgrade Trung Nghia lake Son Tra From Le Tan Trung road to the Eastern Sea - B14 !Ngu Hanh Son From Dai Hoc Village, Dong Tra resettlement area to Co Co River Section 1: From the Southern Link Road Junction to the Northern !road in the middle of Dong Tra Resettlement Area (Point A to B) Section 2: From point B running along the Northern road in the ! ~iddle of Dong Tra Resettlement Area to point C Section 3: Connects Section 2 and directs to Co Co River B53 SUb-component B53: new installation and extension of sewage i systems in Lien Chieu, Cam Le, Son Tra, Ngu Hanh Son districts I Lien Chieu From the Polytechnic University - Ton Duc Thang Street to Phu Loci ~VVTP i i !From Trung Nghia Lake to Phu Loc VVWTP i Son Tra From Nguyen Phan Vinh to Tho Quang i !Ngu Hanh Son r.rom Dai Hoc Village - Co Co River to Hoa Xuan VVVVTP i From ~guyen Tri Phuong road to Hoa Xuan VVVVTP i B54 CamLe !New construction ofHoa Xuan VVVVTP B55a J..."ien Chieu !New construction of Lien Chieu VVVVTP I B55b Son Tra :Upgrading a half of Son Tra VVVVTP capacity as a pilot of aerobic processing Component C: Roads and Bridges . . i INguHanh Construction of Southern Link Road; Hoa Phuoc bridge and Co Co Son, Son Tra, bridge I 1H0a Vang Source: PIIP - 2B, Sub-component B52, B53, B54 and B55, January, 2011 17 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Figure 2-2 Layout oJ PIIP DNphase 2B 2.3 COMPONENT A - URBAN UPGRADING 2.3.1 Scale of upgrading 09 LIAs are selected upgrading and the area and population scale of each LIA differ, which is summarized in Table 2-2 below. Table 2-2 Scale of 09 LIAs Area No of Population No. Location LIAs (hal Households 1. The LIAs in Hoa Tho Dong ward 1 CamLe include Cam Bac 1 and Thai Binh 41.9 842 3,329 2, and residental grouQS No. 16-33 2. The LIAs in Binh Hien include the entire population groups ofNai 25.9 760 3,103 Hien B, Nai Hien A, An Lac, Tan 2 HID Chau Thanh and Vinh Ninh 3. The LIAs in Binh Thuan ward include the residental groups: Binh 17.5 1,201 6,620 An, Binh Hai, Tan Thanh 18 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 4. Population Group No.2 - Nguyen 13.6 1,444 6,245 Tri Phuong Lien 5. No.1 (Thuy Tu) includes the 3 28.6 947 1,938 Chieu residental grouEs 31-36 6. An Hai Bac LIA includes the residental groups: An Tan and An 10.07 977 4,909 Don 7. An Hai Dong LIA includes the i 4 Son Tra 33.48 821 4,582 ! residental groups: 18-20 & 29-38 8. Tho Quang LIA includes 3 I residental groups: Thanh Vinh, 46.19 1,215 5,702 I i Loc Phuoc and Quang Cu B 9. Tam Thuan LIA includes 13 i Thanh 5 residental groups: 5, 6, 7, 9; from 20.3 1,140 6,284 Khe I residental groups: 21-27; 29 & 35 I Total 237.54 6,691 42,702 i Source: Component A - Upgradmg LIA Infrastructure, 912010 2.3.2 Upgraded items Four upgraded items are: (i) roads, (ii) water supply and drainage systems, (iii) public lighting systems, and (iv) social works. The selection of the portfolio is based on the current situation and the urgent needs of each LIA with the active participation of the community. Details of the investment in the LIAs are described in Appendix 2-1. Here is the overall workload of the LIAs. Roads: Based on the specific situtation of each LIA, 09 LIAs were selected to upgrade the roads with the total of 20,076m, of which LIAI: Binh Hien, Hai Chau (650m), LIA2: Binh Thuan, Hai Chau (2170m), LIA3: Nguyen Tri Phuong, Hoa Cuong Bac, Hai Chau (l033m), LIA 4: Hoa Tho Dong, Cam Le (179Im), LIA5: Thuy Tu, Hoa Hiep Bac, Lien Chieu (4032m), LIA6: An Hai Bac, Son Tra (1833m), L1A7: An Hai Dong, Son Tra (1 5 18m), LIA8: Tho Quang, Son Tra (5042m) and LIA9: Tam Thuan, Thanh Khe (2007m). The width of roads are different among LIAs (2.5-13.5m). The road is covered by cement if its width is below 3m and by asphalt for the rest. Lighting: Light cable is provided for all LIAs with the total of 15,873m, of which LIAI (3,321m), LIA2 (I,387m), LIA3 (2,206m), LIA4 (I,175m), LlA6 (3,509m), LIA7 (533m), LIA8 (3030m) and LIA9 (712m); except LIA 5 because its lighing system has just upgraded. Water supply: Water supply pipes are installed for all LIAs with 36km length by HDPE and pressure pipes ofD = 50 - 110 providing conections to more than 8,000 households. Drainage and sewerage system: Combined drainage systems are installed for all LIAs with total length of 4,2km with presure pipes ofD 300 - 800. Social infrastructure works: There are three kindergartens with constructed space of 1,500m2 providing places for more than 2,000 childen; and 07 community meeting halls of I,200m2 offering more than 2,000 seats. Number of beneficiaries is about 4,079 households. 19 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Table 2-3 Social infrastructures in 09 LIAs LIAs I Constructions Land Constructed Storey Beneficiaries I ! area area (household) ! i (m 2) (m 2) Hai chau District .... I Binh Hien Community house 273 125 2 1,201 ward I Binh Cam Van Kindergarten 184 84 3 i Thuan Binh An Community Halls 89 89 2 842 ward Tan Thanh Community 243 121 2 I Halls I Son Tra district I AnHai Tan An museum park 3,840 - Bac An Tan, An Cu3 and An 821 Cu 4 Community Halls . Thanh Khedistrict .. ... . .. .. Tam Phong Lan 4 Kindergarten 184 162 2 Thuan Phong Lan 6 Kindergarten 630 430 2 1,215 ward Group 35 Community 408 - - Halls 2.4 COMPONENT B: ENVIRONMENTAL MANAGEMENT Component B includes new installation and expansion of the rainwater drainage system, wastewater collection system and WWTP system. The combined drainage system is applied, which means that domestic wastewater and storm water are collected and conveyed together. The wastewater is separated via CSO at the end of the pipeline to pumping station, and then WWTP. To prevent the back flows from the sea or rivers into the drainage system, the overflow weir in the diversion chamber is constructed at level +0.60 meters above normal sea level. When the tide reaches +0.60 meters, the pumping stations are automatically switched off. In case of heavy rain, the mixture of wastewater and storm water will overflow the pier of CSOs and discharged into the receiving water body. It is shown in the below Figure 2-3. households .. ( Surface water households Surface water ... , If .--'_ _-, I CSO 1t---~~iN·1 CSO ;t----;:... WWTP . I Surface water river river Figure 2-3 Layout ofcombined drainage and sewerage system 20 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 2.4.1 Sub-component B52 Sub -component B52 will extent the drainage systems in Lien Chieu, Son Tra, Ngu Hanh Son districts. The descriptions are presented in Table 2-4. Table 2-4 Invested items of sub- component B52 Dimensions 1 Construction 1 - - - - . . , . - - - - - - - - 1 ' Brief description District names Length Dimensions (m) (m) Sub - component B52 The culvert section will connect Ngo Thi Nham road with Hoa Minh culvert - Hoa Khanh (to be designed for phase From the 2A) and ends at a culvert section on Polytechnic Ton Duc Thang Street to Hoa Phu lake University to (BxH) (to be designed for phase 2A) 587 Ton Duc Thang (2.0x2.0) road - Hoa Phu Drainage system will be constructed Lien lake under centreline ofthe road Chieu Width of road: 8m High density of population and traffic activities Construct lake bank surrouding Detail description is presented in the following section the Northern 922.63 under the table 2-4 with signal of *** Trung Nghia lake of3.04ha The culvert will start at Le Tan Trung road through a status culvert in residential area and ends at Tho Quang From Le Tan - Bien Dong (East Sea) (to be (BxH)=2 Son Tra Trung road to the 367 designed for phase 2A) (2.0xl.6) Eastern Sea The drain culvert will be constructed under sidewalks and no trees on sidewalks to be affected. From University This culvert will start at the Village to Dong intersection of the Southern Link Road Tra residental 1917 through Dong Tra Resettlement Area area and Co Co and the Resettlement Area of the I-r;..;;.,lv_e.:;..r_ _ _ _---I_ _ _+­____--I Priority Infrastructure Project, runs Section 1: From north and discharges into Co Co River. Ngu the Southern Ranh Link Road Son Junction to the Northern road in (BxH)=2 The drains culvert will be constructed 455 the middle of (2.8x2.5) under the pavements of new road of DongTra Dong Tra area. Resettlement The population distribution is Area (Point A to scattered. B) No trees on the pavements 21 EIA ofDa Nangl!riority Infrastructure Im'estment Project - Phase 2B Section 2: From point B running along the Northern road in (BxH)= 3 135 the middle of (2.8x2.5) Dong Tra Resettlement Area to point C Section 3: Connects to I Section 2 and directs to Co Co River (Ngu Hanh 1320 (BxH)=4 (2.8x2.5) Son dist.) ***Construction ofthe lake north of Trung Nghia residential area Trung Nghia Lake includes two adjacent lakes. Southern lake of 3.06ha has been invested for its embankment. Under this Sub-Component B52, embankment will be built for Northern Lake with area of 2.54 ha. Levelling and landscape recreation will be carried out in the area of 36,902m2. With maximum volume of 162,366m3, the lake mainly acts as water storage and storm water regulation for Trung Nghia residential area and Phu Loc area. The dimensions of Lake Embankment are as follows: • Total length of bank is 922.63m, of which the left 432.72m and the right: 489.91m • Total width from the foot of bank to the top is II.15m • Total height of bank is 5.6Im: o top elevation +4.61m; o bottom elevation -l.OOm • Slopes range from 1: 1.75 to 1: 1.5. The structure of embankment of the Lake is as Figure 2-4. 22 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Figure 2-4 Typical cross-section ofLake Embankment 2.4.2 Sub-component B53 Sub- component B53 will invest to extent the sewerage system in Lien Chieu, Cam Le, Son Tra and Ngu Hanh Son districts. The description is presented in Table 2-5 - . f Ta ble 2 5 D escnpl10n 0 f su b- component B53 - ." .... ­... c:.J .... ." Sections I Dimensions Brief description I ~ ~ ..... From Nguyen Tri The wastewater pipeline starts from cross ~ .1.1 L=2230m road of Nguyen Tri Phuong, at the end =: .~ Phuong Road to Hoa ~ S position of Cam Le District wastewater line D= 1000 U~ Xuan WWTP along a new road and to Hoa Xuan WWTP. Two wastewater pipelines of Nguyen Phan .... Vinh - Tho Quang area are to be built along .~ ~ sides of storm water drains of Tho Quang ­ .~ From Nguyen Phan ~ L = 1730m East Sea. They will be connected to the Vinh Area to Tho ~ D= 300 gravity wastewater collection pipeline along ~ Quang II:.: Son Tra Dien Ngoc Street to pumping Jj station ST 1. It will be then pumped to Son • Tra WWTP. 23 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B The first branch is a sewer along stormwater drainage Hoa Khanh-Hoa Minh Sub­ Component under B52 to Hoa Phu Lake. The second branch is a sewer along L=4650m stormwater drainage Ton Duc Thang- Hoa From University village, D=300 Phu Lake link with Hoa Minh - Hoa Khanh Ton Duc Thang road to CSOs: IS system. PhuLocWWTP PS: 02 These two tributaries running to Hoa Phu Lake will continue along the Hoa Phu channel and connecting to sewer pipeline along Nguyen Tat Thanh and convey to Phu LocWWTP Two sewer pipies will collect wastewater L =1,708 m around the North and South Lake and along From Trung Nghia Lake D=300 the 02 sides of Ho Tay channel - Phu Loc to Phu Loc WWTP CSOs: 8 River to Phu Loc WWTP. PS: 02 2.4.3 Hoa Xuan WWTP and Lien Chieu WWTP 2.4.3.1 Design capacity Capacity Initial design until I Module In 2040 I 2020 ( Yz module) number one I Hoa Xuan WWTP j Average, m Iday I 20,000 I 40,000 I 320,000 j Maximum, m Id I 26,000 I 52,000 I 416,000 Lien Chieu WWTP Average mJ/d I 20,000 I 40,000 I 120,000 Maximum mJ/d I 26,000 I 52,000 I 156,000 Source: CDM, 2011 2.4.3.2 Load Table 2-6: load of Hoa Xuan WWTP and Lien Chieu WWTP Inj7uent)features Initial design until Module Parameters Future (2040) 2020 ( Yz module) number one BOD 5 (mglL) 154 154 200 TSS (mg/L) 176 176 230 N-N03 (mg/L) 30 30 30 Effluent standard )followed TCVN 7222: 2002 BOD 5 (mg/L) 30 30 30 TSS (mg/L) 30 30 30 N0 3-N (mg/L) 15 15 15 Total N (mglL) 40 40 40 Total P (mglL) 10 10 10 Source: CDM, 2011 2.4.3.3 Description oftreatment process Coilected domestic wastewater passes in the headwork structure which includes flow meter, screening bars and grit chamber. At grit chamber, the grit classifier separates the water from 24 EIA ojDa Nang Priority InJrastntcture Investment Project - Phase 2B the grit by a cyclone conveyer and returns the waste stream back into the flow downstream of the screening bars then goes into the secondary treatment tanks (extended aeration) and sand is moved to the sand storage. A single extended aeration activated sludge basin is constructed and sized to serve an average day flow of 20,000 m 3/d and two secondary clarifiers are constructed to separate sludge from treated wastewater. The process of treatment is completed with disinfection by using compressed liquid chlorine (chlorine gas) before discharging into water receiving body. The layout of treatment is presented in Figure 2-5. The sludge is treated prior to discharging to the dumping site and smell is managed by collecting system and treated before dispersing into the atmostphere. Sludge Processing Waste Activated Sludge (WAS) and scum is pumped from the secondary clarifiers to a storage tank in the dewatering building. From the storage tank in the dewatering building the WAS and scum is pumped to belt filter presses for dewatering. The dewatered WAS is then conveyed using screw conveyors to a truck. Odour Control Two smell control systems are designed for the new WWTP - one system collects smell from the Screening & Grit Chamber and the other serves the Sludge Handling Building. The removal odor system is a biofilter tanks. 25 EIA of Oa Nang Priority Infrastructure Investment Project - Phase 2B Polymer i ~,-":'::I-' WAS Pumps P' . f .J ! Pumps t .-.-,-.-.-,-,-,-.-.-,-,-.-.~.-.- Fillmte (!!) Sa....., Q OffSLte ditlpo&Hl Secondary C!ofdktr Oi.trJbution Gn. Chor'lol'lftl DistributIOn Chan~1 '-'-'-~~?:..'jftj:" ij . :>! ~-i:J"''''''.''''d "'...... 6D.r (Mcr'M...WIl) screltncerte mamJOtlyto Mt Rock (2) ....w Wn• •wat..rl CD i . jG,lt , I i I . . CD P1lf'Qhalt Flul"n9 L.~~GrltC.aGt.\ifior o r---.-------~~~~~~ Iv O I s.or"e\'llI'lgItl Container IU a IG 0 'Ol'ltsilner .:on! . OOQQ Chlorine Cylinders Chkxlnet()(' Olorl..... Conlact cnanrwl Ftom atrsite (rank) Pv'TIpjng Sto.tlQn CD Chlorinator ToOutf;p1t Process Flow Diagram (V3) Figure 2-5 Process flow diagram o/new WWTP 26 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 2.4.3.4 Allocation ofconstructed areas in the plant The plant is divided into 04 main areas: 2.4.3.4.1 A rea for Wastewater Treatment Facilities • Flow metering, screening and grit removal • Extended Aeration tanks (oxidation ditch.) • Secondary clarifiers • Chlorine contact tanks • Sludge pump station (collects and pumps sludge from clarifier). 2.4.3.4.2 Areafor Sludge Handling • Sludge storage tank. • Sludge feeding pump to the sludge belt filter press equipment for dewatering. • Belt filter presses. • Dewatered sludge receiving and transport out of the Plant. The sludge belt filter presses will be installed in a building to confine the smellous air and conducting it to the smell treatment facility. 2.4.3.4.3 Area for Administration • Offices for Plant staff, central control room, laboratory. • Areas for gardens and trees • Parking for staff and visitors. This building is located in the environmental protection buffer zone of the Plant. 2.4.3.4.4 Auxiliary Buildings • Chlorine Storage and Feeding Building for disinfection. • Standby Generator House to ensure safe operation of the Plant during power black-outs. • Warehouse and Workshop for repairing machinery, storing standby equipment and materials and fabricating necessary equipment. These facilities will be located in the buffer zone. Besides, the other infrastructures such as electricity, drainage system, fences, gates and internal roads The quantity of invested items in each plant is summarized in the Table 2-7 and layouts of Hoa Xuan WWTP and Lien Chieu WWTP are presented in Figure 2-6 and Figure 2.7, respectively. 27 EIA <: Tn",."" ..., In ves(men! -Phase 2B Table 2-7 Summary of invested items of Hoa Xuan WWTP and Lien Chieu WWTP for initial 't , capacly 0 f 20000m3/day No. I Work items I Quantity Descriptions A. TECHNICAL DESIGN 1 Pumping station and pumps 1.1 Pumping station 01 pumping Built by reinforced concrete, consisting of station for two parts: each module A part which contains water and pump is hermetic to prevent smells from escaping to the atmosphere. A vent leads smell to the deodorizer. Above are door and steps. A part contains pipeline, valves and appurtenance. This section does not need to fit tightly. . Above the pump station, arrange control i panel at 6.50 m high 1.2 Pumps 05 pumps in Submersible pumps, sludge pumps are each pumping fitted with sliders to bring the pumps up station and down 2 Primary treatment 2.1 Quantitiy=1 The Parshall flow is led pouring into two flumes where there are waste smooth HeadworkslParshall Flume with screens operating mechanically. A third Flume width of 0.6m flume is created with waste screens operating manually to replace one of the flow rate 1000 two flumes when it does not works due to - being repaired or maintained or 81.000m3/day encountered heavy flows. 2.2 2 units x (3­ Arrange at working floor as required Solid waste storage 5m 3) 2.3 Grit chamber 2 tanks x 3.05 Each sanding tank has a sand pump of 16­ m3 18L1s and a sand filtering equipment type Cyclone. 2.4 Sand storage 2 containers x each sand container will be brought to 3.5m3 landfill '3 Secondary treatment 3.1 Aeration tank 01 tank 03 ditches with total volume of tank 7650 m5 ; • Wheel Aerator - SS in the liquid mixture will vary from 300 to 3400mg/l; Sludge volume • index SVI = 125-150 mL/g; hydraulic retention time is 8 hours 3.2 Secondary sedimentation 2 tanks x (D = Covered to prevent smell disseminating tanks 32m) x (H:= 4.9m) 28 EIA ojDa Nang Priority lrifrastructure Investment Project Phase 2B 14 Disinfection Chlorine tanks 2 tanks x Exposed time 30 minutes (4,8x2,8x4,Om) 5 Sludge process Volume of separated 3,900 kg /day Covered to prevent smell spreading sludge 2 x400mJ Covered, dried and transferred by trucks to Sludge containing tank landfills or fertilizer plants Located far from the boundary site; Generated smell is ventilated to the smell control room Odour control room where smell is treated before discharging into the air environment. B. AUXILIARY BUILDINGS The internal roads form the boundaries Main roads: between functional facility areas and modules 10m with by phases sidewalks, Internal roads Sub- road: 3­ 5m without sidewalks Gate and Fences are designed firmly for the , Gates and fences whole construction area of the plant with the capacity of 320,000 m31day Two separate drainage systems, one for Drainage system collecting runoff water and one for i contaminated water Power supply and Two separate drainage systems, one for I electrical system lighting road and one for operating machines Source: Basic design oJSub-component B54: Hoa Xuan WWTP (0212011) 29 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B I CHO THlcH • LEGEND: '1~hG DOUi\:ll1)\C "HA C.\~ rv~y (':-!AI {l1r'.l ~JJN ..'tI;'II~ G('KnA.T~ eUH DINe $QNC ChAW Il.l.C "'~"';~l:)JoJt; SC'lHh$ ..... O~.S..ff.O .,;:.., OC',~ fiJoJ m~M (!!)l,IIlf<:" ru.~~ ..,,,"'-1 'iliA IDLY flO'll wr.Yll.1.j:Q'I"I""'''''.~L HII,S f\.1,'!'S!.'.T(lNS S~!oIJIl£ i-IA-"!)~Ir.G elJll£ll~G tU.6 ·11111.1, ,."1).11..1.1 '~t.I'ii:l·.D"<]L.\' lOP ;>11\"01 P~I flOOC ~1'",';111J"l11'~!~i"I4$( eO ~I;JC K;EN soJ.l """ >(; 1),"'''TnIBiJTlQ\ oons tI')I\~ ii'" ~4~ ~J'\1i ~O"I(" ,JJ,~t~ Blijrll'r\"~ r(:F r.0ClR :~TAOi Qft~HII(liI,"J· fitl 1't-:JlI; ~ .. A I.':IG ~UA :t" ':';HI.OOIUl HW'il [JIJ1T~1 Figure 2-6 General layout ofHoa Xuan WWTP 30 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B CHU THlcH - LENGEND .........•............................................................. 1 MANC DOUJULuOhG "1.0.... M['T[~ 30F11G Ct1A~ RAC SCAUH3 8ElI\HGCI\T QRIT REMOVAL T"'...... S kIoiif C6I'1C ·1II1N1"4)(A\I !:)-,J"lt".i i1I.lI"'C ':\1('hC,1 101 n, i,;;)toj!'~RtlI.:11ONr'll·LJIIJ'F 1>1 ..... 9:1 12 ~ ? 15 11 9 10 r -, _.J ru.H .. GlC'Jlm~ ••• )(tIIV"llro<:THI\tH()"'),.I....k 13 L 'IOAICIjA,"'lMrpI:\Ol""I1A'11( ... ~ .•••..•....••............•...... .•.••.••.•.•..... ................. ~ -=- ,'T'I~j~l.II~~K~ r.ih<~ r.£~(:t,I ..... ...sITP)LI.[\'(L "(I1.'1j. ;Il tll1 '10)/' I ~,'I' 1£,. C:O~aT::QoI~ x,",,, D.,I'r.C KH..J xu L'fNU'OC ·,,"'1 I! ,. r .. :/ "\IIJ)(.I.h'fBlJol ~~,. j "\IIJ~;,jll~#P'l4JII~O' I;::or.a..-. .~v.n l'~G I fill"" C'*IV)(.6oI.I ... IoJIH-IO...·(:A.C'"IV "1rI1-" Figure 2-7 General layout ofLien Chieu WWT 31 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 2.4.4 Pilot upgrading existing Son Tra WWTP 2.4.4.1 Objective ofupgrading Experiment the aerobic treatment model to compare with the current model to evaluate their effectiveness before deciding to upgrade other existing WWTPs. 2.4.4.2 Upgrading scope Upgrading scope means designing a aerobic treatment technology to improve the treating capacity. In the pilot phase, a reservoir will be converted into an aerobic technology and another remains unchanged. Treatment and the effluent quality of wastewater meets TCVN 7222: 2002. The upgrading scope is shown on table 2-8. 2.4.4.3 Briefdescription Table 2-8 Bnefd escnpllOn 0 fthe upgra mg 1 ems . t No. Upgraded Construction Dimension Description Item I Sand sedimentation LxWxH= Upgrading existing chanels channels 26m x (0.8 m x 1.Im)2. 2 Wastewater distribution Upgrading existing manholes manhole 3 Aeration compartment 3mx The 3m depth tank used as an aeration tank ( aerobic condition) Activated sludge 5mx sedimentation tank The 05m depth tank used as sludge sedimentation (anaerobic condition) Aerobic and anaerobic tanks are separated by floating flat made by hypalon material; the flat fixed by polymer buoy above and cable in the bottom of the tank; two compartments are interconnected to each other by rectangular holes with dimensions WxH = 250 x 200 mm, total holes: 30 holes, velocity V = 0,24 m1s. 4 Air blowers 6x45KW Air blowers installed to supply oxygen for (60hp) wastewater treatment process 1000rpm 5 Collecting sludge weir WxH=460x Installing at the end of the tank, slop i= 570mm 0,004, suitable for Q = 1300m31h, V= 1,38m1s. 6 Pumping Station of 02 pumpers 1 return activated sludge pump from 32 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B -------------------------- j I surplus activated sludge 420 m Ihour; sedimentation tank to aerobic tank; • pump and return activated H = 10 m 1 surplus activated sludge pump from sludge sedimentation tank to surplus activated sludge storage Self-priming pump for surplus activated i sludge 7 Surplus activated sludge LxWxH 13 Surplus activated sludge: storage x 12 x 5.5 m. 780m 3/day(0.6%), equal 4700 kg/day 8 • Drying sludge house LxBxH= Equipment including sludge pump, bell (before taking it to 282m x filter press, sludge transport, polymer landfill 8.2m x 5.5m addition... 9 Odour control by bio­ LxBxH= Odour generating from inlet trench and filter to.1m x anaerobic tank, surplus sludge storage and 6.4mx sludge handling building will be removed 3.55m by smell-collecting-pipe (HDPE D 160 630) system to bio-filter. to Installing flow-meter on Propeller Installing flow-meter on the treated the treated wastewater waterflow wastewater outlet pipe to control ! outlet pipe meter. D400 wastewater flow 2.5 COMPONENT C Southern Link Road and Hoa Phuoc, Co Co Bridges 2.5.1 Southern Link Road The Southern Link Road with the length of 7,279km starts from HighWaylA at Km 0.000 (Hoa Phuoc, Cam Le) goes through rice fields then passes Cai River at Km 0+738.24, intersects Mai Dang Chon at Km2 + 621.38, Tran Dai Nghia at Km4+958.23 where Da Nang Tourism College being built and passes Co Co River at Km6+404.48. The Southern Link Road is a newly constructed road; however, after crossing Co Co River, the line from Tan Tra Residential Area to the end of Road at Km7+279.66 has been constructed by the other project of the city (Figure 2-8). 33 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B SOUTHERN LINK ROAD M';.U HAHN '\ SON Figure 2-8 Layout ofSouthern Link Road The proposed crossing section design is presented in Table 2-9 . T able 29 C ross sectIOn deSlgn 0 f the roa d - Characteristics Unit Value I Line KmO+O.OO ­ Km6+267.20 1. Road width m 34 2. Road-surface width m 34 3. Verhicle-road m 2xl0.5 = 21.0 4. Seperated line m 3.0 5. Walk-line width m 2x5.0 = 10.0 6. Drainage system Yes II Line Km6+267.20 ­ Km7+279.52 1. Road width m 30 2. Road-surface width m 30 3. Verhicle-road m 2x7.5 = 14.0 4. Seperated line m 0.0 5. Walk-line width m 2x7.5 = 15.0 6. Drainage system Yes Note: the linefrom Km6+527.85 to Km7+279.52 (the end ofthe project) belongs to Tan Tra residential area (being implemented). 34 EIA oIDa Nang Priority Infrastructure Investment Project - Phase 2B 2.5.2 Hoa Phuoc Bridge and Co Co Bridge Southern Link Road has to pass by Vinh Dien River and Co Co River. Therefore, two bridges, Hoa Phuoc bridge crosses to Vinh Dien River and Co Co River crosses to Co Co river, will be built. Brief description of Design parameters for the bridges will be presented in Table 2-10. Table 2-10 Brief description of design parameters for Hoa Phuoc Bridge and Co Co Bridge Hoa Phuoc Brid2e Hoa Phuoc Bridge crosses Vinh Dien river at Km 0+738.24 from the national Way Nol to the coastal road of Truong Sa to Phuoc Hoa commune, Hoa Vang district. The river width is V= 420,8m with 10 spans = rather big. There is no sign of soil erosion and the terrain is 5x33 +50+75+50+2x33 quite flat. Pile number = 12 piles x The height of the box slab changes from 2.25m to 4.5m from 12 piers = 144 piles with the middle span to the pier head. This is a continuous D= 1.2m, Depth = 63m structure whose dimensions are relatively consistent with the requirements of spanning and ensure the navigation clearance. . Pursuant to the regional geology, bored piles with diameter of ! 1.2m is used Co Co brid e L = 80m with 02 spans Co Co Bridge crosses Co Co river at Km 6+404.48 from Hoa 33mx2 vang district to Son Tra district. Co Co river is dammed one head, so boats do not pass through. There is no sign of soil Pile number = 10 piles x 3 erosion and the terrain is quite flat. piers = 30 piles with D= • The pier structure is similar to Hoa Phuoc Bridge, bored piles 1.2m, depth = 57 m. I with diameter of 1.2m is used. 35 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B '" ~!"~~1"--------------~1"4'1~----------~1'--~'!~'-4'I "' Figure 2-9 Cross section ofone Hoa Phuoc Bridge pier 36 ElA ofDa Nang Priority Infrastructure Investment Project Phase 2B '" !" "I '" "' '" "' "I" "\ f Figure 2-10 Cross section oione Co Co bridge pier 37 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B CHAPTER 3. ALTERNATIVE ANALYSIS 3.1 WITHOUT PROJECT Without the Project, Da Nang's environmental sanitation will not be improved significantly because the existing collection and wastewater treatment system does not meet the current and future needs. The public health, particularly the poor in LIAs, is threatened by the polluted environment and unsafe water as well as the unperfect transportation infrastructure system. All of them will hinder the economic - social development (especially in the south of the City) and affect the City's sustainable development, present and future. 3.2 ALTERNATIVES 3.2.1 Component A 3.2.1.1 Process for selecting upgraded items The process to select options for 09 investments in upgrading the LIAs is as follows: • First, design consultant, environmental consultant and PMU carried out a survey the situation and assessed the needs of each LIA area (local people, local authorities and urban development plan of the city). • The portfolio for each LIA was unanimously selected through community meetings. On that basis, design consultants presented to the community 2-3 investment options for each item with the advantages and disadvantages of each option; after that community discussed and chose the preferred option. The opinions of the community were fully recorded, analyzed and applied by the design consultants. • The final option went through community and local authorities before the detailed design of each portfolio in the LIA is implemented. 3.2.1.2 Analysis and selection factors Based on the condition of each LIA, the options of upgrading alleys, lighting, drainage system, wastewater collection, water supply and transit of solid waste (garbage) are discussed with the community. The options are similar for LIAs and the following is the summary of options. Portfolio Alternatives/options Review of environmental aspects Advantages disadvantages Upgrade Two options are Suit the planned alleys as Most of alley roads/alleys proposed: the City planning. widths are smaller (1) Comply with the than 305m. Thus, a status Minimizes effects of fire trucks can not (2) Expand relocation and resettlement; approach to fire The community choose area. the option of complying - The elevation is kept with the status. If unchanged because the community agree to LIAs is not affected by upgrade alleys as the tides; i planned alleys, that will . - Do.es not affect trees on : I be the chosen option. sidewalks; : - Reduce investment cost 38 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Lighting There IS no option, Comply with the electric system comply with the safety safety regulations in regulations on Low residential areas: • Voltage III residential - Low voltage areas: - Plastic-coated wire - Appropriate column elevation Drainage There are 03 options: Is easy for the operation and system (I )Concrete-in-place box maintenance. culverts with tightly slab The Consultant shall cover; calculate the flow of rain to (2) Concrete pipe avoid flooding and the culverts; advantages when it connects (3) Brick culverts with with households. reinforced concrete ; The community selects Option I Transit The Community opts not No need of investment costs waste to build transit landfill for construction of solid and trashes in alleys. waste transfer stations as Follow the current waste well as buying bins; collection procedure. Collection and management in current processes. Conclusion: the options of community for upgrading roads, sewer system, garbage collection system are suitable. However, fire protection need to be considered carefully. Consultants propose the alley out to be less than 305m should be invested fire hydrant and guide people to practice fire when the fire occurred. 3.2.2 Component B 3.2.2.1 Sub-component B52 There are no options because the alignment, culvert size and slope coupling with rain water drainage system are designed in Phase 2A in accordance with Dispatch NO.2392/SXD­ QLHTDT dated 08/09/2010 of the Department of Construction. 3.2.2.2 Sub-component B53 There are no options because the collecting alignment is in compliance with the City's Wastewater Management Strategy to 2040 (Decision No. 8438/QD-UBND dated 03/11120lO). 3.2.2.3 Sub-component B54, B55a Site selection: In fact, where to build two WWTPs of Lien Chieu and Hoa Xuan has no options but merely relies on the City'S Strategic Wastewater Management to 2040. The land for the construction of Hoa Xuan WWTP is based on Decision No.7919/QD-UNBD dated 15/tO/20lO of Da Nang People's Committee (Appendix 3-2). The land for the construction of Lien Chieu WWTP is based on Decision No.8500/QD-UNBD dated 05/11/20lO of Da Nang People's Committee (Appendix 3-3). Da Nang City People's Committee presides the choice of locations with the participation of such City's relevant departments as the Department of Natural Resources and 39 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Environment, the Department of Construction, the Planning Institute, the Department of Transport and the City's Waste Management Company v.v. The planning map is reviewed by the Department of Natural Resources and Environment of Danang City. To examine the feasibility of the locations based on the field survey, the Environmental Consultants offer some assessments of the feasibility of the WWTP locations, which are summarized in Table 3-1. Table 3-1 Evaluation for site selection Hoa Xuan WWTP Lien Chieu WWTP Factors Features Reviews Features Reviews Total area (S) ;: 22.04 ha -7 +++ Total area (S) = lOha ha +++ which is capable enough to -7 which is capable run, expand and ensure the enough to run, expand and full capacity in the future ensure the full capacity in Area and (320,000m3/day night) the future geographical (120,000m3/day night) locations Capable to receive the flow +++ Capable to receive the +++ from Hoa Cuong and Ngu flow from Phu Loc Hanh Son WWTPs in the WWTP in the future. future. Buffer zone The North, East and South: + It fails to satisfy the + the buffer meets TCVN requirements ofTCVN 7222:2002 (300m). 7222:2002 as the distance The East: the distance of the from the plant boundary buffer zone is 100m, which to Hoa Khanh residential does not meet TCVN area is about 40m , 7222:2002, however, we may however, we may consider applying QCVN 07: consider applying QCVN 2010IBXD provided that the 07: 20 I OIBXD provided treatment technology does not that the treatment affect the environment. This technology does not affect results in the increase of the environment. This construction costs. results in the increase of construction costs. Access road The access roads are large +++ The access roads are large +++ enough for sludge and enough for sludge and material trucks to easily reach material trucks to easily reach Land use The land use purpose is +++ The land use purpose is +++ converted from poor soil to converted from poor soil unarable exhausted soil, so the to unarable exhausted soil, work will bring greater so the work will bring economic value greater economic value 40 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Agricultural and residential + Agricultural and + land can be revoked for the residential land can be public purposes but impacts revoked for the public on people will be minimized purposes but impacts on by proper policy (RAP report) people will be minimized by proper policy (RAP report) Flooding The lowland can be flooded, ++ The lowland can be ++ so it's neccessary to elevate flooded, so it's necessary the ground. That could raise to elevate the ground. the investment cost. However, That could raise the low soil will facilitate the investment cost. However, conveyance of wastewater to low soil will facilitate the the plant conveyance of wastewater to the plant I Receiving The section of Vinh Dien +++ The downstream of Cu De +++ water River at Khue Dong bridge is River is wide. The flow sources after wide. The flow ranges from ranges from 20 - 120m3/s the 10 - 40m3/s in dry season. in dry season. The slopes treatment The slopes are steep. This are steep, which will not section will not be much be much influenced by the influenced by the tide. The tide. The water source can water source can serve the serve the transportation transportation purpose purpose Ecosystems The ecosystem is poor that +++ The ecosystem is poor +++ can be better restored after the that can be better restored completion of the plant after the completion of the plant Cultural No +++ No +++ property Affected by No +++ Hoa Khanh industrial ++ other zone discharge into the projects upstream but its impacts are controllable Note: +++ Very good, ++ Good, + Ok Conclusion: Based on the strategic objective of the municipal wastewater management, the selected locations for Lien Chieu, Hoa Xuan WWTPs are considered feasible. However, we should pay attention to the possibility of smells if the buffer zone does not meet TCVN 7222: 2002IBTNMT and calculate impacts on the surface water of wastewater receiving basins when the plants are breakdown. Technological selection Because of the narrow buffer zone based on QCVN 07/2010IBXD (40m), some treatment technologies such as biological lagoons or disinfection by UV light are not considered. Sequencing Biological Reactor (SBR) and Extended Aeration (EA) were two options identified for providing secondary treatment at the Hoa Xuan and Lien Chieu WWTPs. Disinfectants such as UV, Ch and NaCIO were provided for selection. 41 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Secondary treatment 1. Sequencing Batch Reactor (SBR) System A Sequencing Batch Reactor (SBR) is a variation of the activated sludge process. As a fill and drain or batch process, all biological treatment phases occur in a single tank and no required separate tanks for aeration and sedimentation. There are normally 5 phases in the SBR treatment cycle: Fill _ React _ Settle -Decant -Idle. Normally, aeration system is installed in the bottom creating bubbles with a simple repeated sequence of aeration and non-aeration to provide aerobic, anoxic and anaerobic process conditions in each batch of treatment. The SBR process is based on a fill-and-draw operational mode with four distinct cycles as depicted in Figure 3-1 and as follows SEQUENCING BATCH REACTOR (SBR) CYCLES Figure 3-1 Sequencing Batch reactor (SBR) cycles 2. Looped Activated Sludge System - Extended Aeration (LASS- EA) LASS - EA is derived from the oxidation ditch (OD with a variation that adds control, efficiency and flexibility with mUltiple concentric oval or ring shaped channels with the aim accelerating air transfer efficiency. A typical EA system is shown at Figure 3-2. Wastewater along with the return activated sludge (RAS) normally enters the outer channel and the combination known as mixed liquor (ML) flows concentrically towards the centre of the tanks. Once at the centre, the ML will overflow a weir and flow to the centre influent well of the clarifier. Horizontal shaft disc or vertical shaft mechanical aerators provide aeration and move the ML around the rings. EXTENDED AERATION Influent Return Activated Sludge Sludge Figure 3-2 Typical EA with concentric multi-channel configuration 42 EIA Phase2B The comparison of two options focused on the environmental-related factors only. . T able 3-2 EffilClency 0 f treatment an dleve s 0 f enVlronment aI Impact . Parameters I Units I Looped Activated Sludge I Sequencing Batch Reactor System Extended (SBR) Aeration (LASS- EA) Oxygen transfer kg OzlkWh 2.05 1.31 efficiency Efficiency of transferring Lower. The aerator as oxygen is better due to of diffused air, fine bubble aerators as mechanical, may limit ability of horizontal disc and transferring oxygen into mechanism of moving the solution. influent wastewater around the ditch. MLSS max mg/L 3,500 2,500 higher lower Sludge yield kgMLSS/kg 0.92 0.95 BOD removed Lower ~ high efficiency higher of treatment Sludge kg/day 5,646 5,830 production lower ~ indicates higher reduction in the related costs and smell generation F/M ratio Kg BOD/kg 0.115 0.131 MLSS lower higher RAS mg/L 6,000 9,000 concentration lower ~ high efficiency of higher treatment and percentage of living microorganism in RAS Bucking sludge Phenomenon No ~ bucking sludge will Could happen prevent sludge from I sedimentation SVI (sludge mllmg 160 100 volume index) higher ~ sludge is easy to lower be solidated and dewatered and enable to use for agricultural purpose Odour - Lower due to adequate Probably higher due to generation oxygen provision lower oxygen concentration in the solution Environmental - Smaller impacts Worker health - Lower impacts 43 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Conclusion: Level 2 processing technology of extended aeration oxidation ditch (Lass-EA) is evaluated more advantageously than the batching biological reaction technology (SBR) in term of the wastewater treatment efficiency and environment pollution thank to its less smell and sludge formation. 3. Alternative for Odour removal methods Three smell removal methods were proposed for smell control at WWTPs: • Activated Carbon Adsorption • Biofilter • and chemical Scrubber Principle of each method Activated Carbon Adsorption Activated Carbon is extremely effective at smell control. The tremendous surface area of activated charcoal (I teaspoon = a football field) quickly adsorbs unpleasant scents - not just masks them. So, while other smell control techniques just cover up the smells, activated charcoal actually eliminates them permanently. Biofilter Biofilter are a smell treatment technology that utilizes biological processes as the treatment mechanism. Odour will go through a wet bio-Iayer and micro-organisms will consume substants caused smell and emit in the outlet air with other air substants. The biological activity in a biofilter is similar to the activities performed by microorganisms in activated-sludge secondary in wastewater treatment processes. Chemical scrubber Foul air is directed upstream to the wet chemical tower, where it is transferred from vapor to liquid by surface contact. Its pressure dropping reduces its flow speed. At this point, the ordor element, H2S is oxidized by sodium hypochlorite (NaCIO) and retained in the system. Chemicals are pricked into the system continuously. The advantage and disadvantage of the 03 desmellant methods are compared in Table 3-3. Table 3-3 Advantage an dd·Isa dvantage 0 f each smeII remova meth0 d Method Advantages Disadvantages Remarks Activated - High smell removal - Difficult to regenerate Applied for low carbon efficiency; activated carbon; must smell quality - Simple operation replace activated carbon adsorption frequently - No secondary contaminants nor - Odor removal efficiency hazardous by-products is not stable - High operating cost (activated carbon is expensive) Biofilter - High smell removal Low smell removal Applied for any efficiency (>90%); efficiency at the beginning smell quality - Simple operation of operation; 44 EIA ojDa Nang Priority Irifrastructure Investment Project Phase 2B - Odor removal efficiency is stable - Bio-media life in excess of 10 years; - Low operating cost • - Neither secondary contaminants nor hazardous by-products Chemical - High smell removal - Complex operation Depending on scrubber efficiency; - High operating cost ! characteristic of - Odor removal efficiency • - The secondary smell, liquid is not stable contaminant is I absorption will be wastewater changed Conclusion: Actually, the biofilter is now popular not only because it is modem but also it is simple, efficient and stable. Biofilters are considered to be a "green" approach to smell control, because microorganisms in media could produce external enzyme to transfer smellous substances into carbon dioxide, water, biomass, and other benign by-product such as chloride and sulfate. Therefore, this method is proposed to be applied for two WWTPs of the project. Disinfection Three alternatives for disinfections are Ch, NaCIO and UV. Each chemical has different advantages and disadvantages as shown table below: Table 3-4 Characteristic of some chemical used for disinfection Chemical Advantages Disadvantages Remarks Ch - Low cost; - Possibility of harmful Bacteria in the organic compounds wastewater are not - Long-term history of generation required to be effectiveness killed completely. - Residual chlorine is toxic to Therefore, the aquatic species residual chlorine is capable to be reduced to zero. Sodium No harmful chemical - Higher operation cost Less hypochlorite for receiving source environmentally - Damage for pipe and like chlorine harmful than facilities system that exists chlorine but the sodium hypochlorite (Ch antibacterial and O2 are easy to release to spectrum is lower cause pipeline corrosion, and the possibility NaOH will increase of metal corrosion Hardness of wastewater to and pipe clogging cause obstruction of 45 ElA ofDa Nang Priority Infrastructure Investment Project - Phase 2B pipeline) is larger Ultraviolet No used chemical and Expensive operation cost SS concentration in (UV) no adverse effect on (frequent lamp maintainance wastewater cannot organisms as well as and replacement; the high be required as in natural environment; quality of wastewater inlet to supply-water ensure that the target microorganisms are not shielded by SS from the UV radiation...) Conclusion: Based on the advantages and disadvantages of the above 03 disinfectants, UV is hard to apply because of its high cost and low ability of bacteria killing in wastewater. NaCIO has less toxicity in the water. CI has high corrosive possibility in the system. Cl2 can be seen more advantageous than UV and NaCIO because of its wide sterilization, popularity and minimization of environmental impacts by avoiding the amount of residual chlorine in wastewater after treatment. Sludge According to the extended aeration technology, the production of fresh sludge is 0.92 kgllkg decomposition BOD. Fresh sludge is formed as follows: 2020 2030 2040 I Hoa Xuan WWTP 20,000m 3/day-night 80,000m 3 day-night / 320,000 m 3/day-night Production of fresh 2,480kg 9,920kg 39,680kg sludge I 3 120,000m3/day-night ,... ...r.r. Lien Chieu WWTP 20,000m /da 3/day-night I Production of fresh 2,480kg 4,960kg 14,880kg sludge Total production of 4,960kg 14,880kg 54,560kg fresh sludge of two plants Sludge can be made 1,736kgl day-night 5,208kglday-night 19,096kglday-night into wheels that can roll. The humidity of sludge ranges from 16% to 35% Sludge derives from domestic wastewater, so its quality can be suitable for the agriculture (EPA, 1994). To reduce smells in the project area, optimize the plant investment and use sludge as a raw material of organic fertilizer production. Two options are identified for comparative evaluation as follows: (I) Sludge is treated in wheels and temporarily agglomerated at Khanh Son landfill. (2) Do not invest sludge handling building and fresh sludge is transported to where there is the production of organic fertilizers. 46 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Option 1 Option 2 Advantages It ensures the environmental Save the initial investment because it safety for sludge is treated does not require the construction of closely into dry wheels; the sludge drying house amount of germs is There is no smell emission from significantly reduced; sludge Sludge can be buried at Khanh Minimize investment for smell Son landfill without large area; treatment Sludge can be uses as fertilizer in the future when a fertilizer plant is built (by anaerobic fermentation when sludge is buried); High feasible in the early stages of the project because it avoids unforeseeable risks. Disadvantages Must invest in sludge handling Invest in specialized vehicles and building and equipment and ensure the hygiene and safety; desmellizing, costly and Da Nang city has not an organic requiring initial investment and fertilizer manufacturer to receive such area; a sludge; Odor may be emitted from In the first stage of the Project, sludge sludge handling building is not enough for the investment of a new fertilizer plant; If discharged in a different place, it needs time for the preparation like choosing locations, carrying out environmental impact assessment, and building treatment and drying area of sludge; Discharging sludge straightly out fields or forests that needs the supplement of certain material in sludge is unprecedented in Vietnam; Trucking sludge can distribute fresh sludge, germs and smells into the environment; The feasibility is not high because of too much works to be prepare at the same time; I 47 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Conclusion: Based on the aforesaid analysis, Option 1 for the first phase of the Proj~ct is feasible because ofthe following reasons: In the first stage of the Project, the sludge is not enough for the investment of a new fertilizer plant; It needs time to calculate a feasible plan of an organic fertilizer plant, making use of available materials of waste and sludge. Sludge to be made in wheels are safe for the transport and environment without malpractice as spillage of sludge on roads or smells and flies in dumps that make offensive to people of a modern large-scaled wastewater treatment plant. Sludge is buried in Khanh Son landfill which is feasible for small volume and excavatable for raw materials for a future fertilizer plant. Sludge can be considered to be dried 35% for transport but not 16% as designed. Investment of a sludge handling building at the plant will reduce future investment costs for a fertilizer processing plant which will be decided to build. 3.2.3 Component C The component C has two sub-components, Southern Link Road and Hoa Phuoc, Co Co Bridges. 3.2.3.1 Southern Link Road The People's Committee of Da Nang city has selected the Southern Link Road in Decision No. 5957/QD-UBND dated 09/08/2010 in term of the standard framework for the Southern Link Road and the master development planning of the transport infrastructure of Danang city (the data is updated from the Urban Planning of Danang city). The alignment of the Southern Link Road follows the approval of Da Nang People's Committee in Decision No.7922/QD-UBND dated 01114/2006, enclosed with Land Acquisition Decision No.4316/QD-UBND dated 23/5/2011 of the municipal People's Committee (Appendix 3-4). Comments: in term of the economic aspect: the construction of the Southern Link Road will contribute significantly to the development of the transport network and economic opportunities for Da Nang city and people in the project area. On the environment aspect, the route does not affect much the environment and can be minimized because it mostly goes through paddy land and some small neighbourhoods of Phuoc Hoa, Hoa Yang and Hoa Quy, Ngu Hanh Son and does not affect the culture and the conservation. Negative impacts such as land acquisition, dust and noise in residential areas can occur but people will be benefited from rising land values and opportunities brought by the urban development. Conclusion: In term of environmental aspect, the alignment option is evaluated reasonable for the construction of the road. 3.2.3.2 Phlloc Hoa Bridge and Co Co Bridge There are no options because they are in compliance with the road alignment. The design option must ensure the aesthetic and technical conditions and take into account the regulated navigation for River Level 4 (Vinh Dien River). 48 EIA ojDa Nang Priority Infrastrl!.c:.tu~re_In~v_es_tm_en_t_P_ro-=-lj_ec_t_-_P_h_as_e_2_B _ _ _ _ _ _ _ _ __ _ CHAPTER 4. NATURAL, SOCIO-ECONOMIC AND ENVIRONMENTAL CONDITIONS OF THE PROJECT AREA 4.1 NATURAL CONDITION 4.1.1 Climate - meteorology Da Nang is in the typical tropical monsoon climate, governed by the transition climate between south region and north region with typical climate in Temperature The average annual temperature is around 25.9°C, highest in June, July, August (28-30°C) and lowest in December, January, February (18-23°C). OC 45 40 35 30 .......... - ------- .... , .......... ­ 25 20 15 ".. -­ ".."" 10 5 0 Month 2 3 4 5 6 7 8 9 10 11 12 Figure 4-1 Air temperature in Da Nang, 2009 Rain regime: According to Statistical Yearbook of Da Nang city. 2009, the rainfall in Da Nang city is quite abundant. Total average rainfall in months of a year is about 3,017.8mmlyear and there is a remarkable difference between 2 seasons: Rainy season: lasts from August to December, there is so much rains with high humidity, highest rainfall focuses on October and November (average 550 ­ 1.OOOmmlmonth). - Dry season lasts from January to July of the following year with little rain and dry weather due to effect ofdenatured southwest monsoon wind. 49 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 1600 ~-------------------------------------------­ 1400 1200 . 1-,._. __.....-_...--._.....,,-- .....,....,-_....,-_.-..........._ ...._-._.._----........-------. ......,_.-.-.... _ 1000 +------------------------------­ 800 +-----------------------------­ 600 -.-----.---- . - - - - - - - , - - - - - - - - ­ 400 +------------------------------- I-­ 200 +------------==---------~-----­ -- o . ·····.·-r··_··-, . . - --r-..• --.l.. _J'illlIIL_-T·,·--··r-·.--"-·....--··r- II III IV V VI VII VIII IX X XI XII Figure 4-2 Chart on rainfall in months ofyear 2009 Humidity and evaporation Humidity: According to Statistical Yearbook of Da Nang city in 2009, the average annual humidity is about 82%. Humidity period lasts from September of May of the following year, the average humidity exceeds more than 80%. The most dampest month is October with average humidity of about 90%. Dry period is June, July and August with average humidity of about 75%. The driest month is June with humidity of only 71% (2009). Evaporation: The average evaporation in months varies from 71.8mm to 164.8mm, the average annual evaporation is 98.2mm. The common wind direction is Da Nang city is north, east and northwest directions (from October to April of the following year) and West and southwest directions (from May to September). At the center of the city, windless frequency is quite high (30 - 50%). m/s25 II 20 /\ 15 / \ 10 ~~J ~ 5 0 Month 1 2 3 4 5 6 7 8 9 10 11 12 Figure 4-3 Strongest wind level in months (year 2009) The average wind speed in year 2009 is quite low (1.4 m1s) and it is not much different from that in previous years. 50 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 4.1.2 River network and Hydrology 4.1.2.1 River network River system is short and declined, originated from the west, northwest and Quang Nam province. River network ofDa Nang city mostly belongs to downstream ofVu Gia Thu Bon River. Meteorological system is the main source which provides the fresh water to meet demands ofDa Nang city. The Rivers of the City are: Tuy Loan River, Cu De River (in the north), Yen River, Qua Giang River, La Tho River, Vinh Dien River and Han River. Tuy Loan and Cu De have independent water basins and locate in Da Nang city. Other Rivers are all downstream of Thu Bon and Vu Gia Rivers. Vinh Dien River: is the branch of Thu Bon River at Cau Lau Bridge, approximately 5km toward the upstream. Vinh Dien River brings part of Thu Bon water and receives the flows of La Tho and Qua Giang Rivers before discharging into Han River. Cu De River: Cu De basin is on the northern city and has plume shape, which tilts north east - south west. The total area of the River basin is 472km2. Total length of Cu De River is 38km. Cu De downstream is frequently contaminated with salt and in dry reason almost half of the River length is salted. Tuy Loan River: Tuy Loan basin is on the left of Vu Gia River and connects with Cu De basin. Tuy Loan River originates from Ba Na Mountain at the height of about 1487m. The River length is 30km. The basin area from its outlet to the junction of Tuy Loan and Yen Rivers is 280km2. The average height is 271m. The average slope is 15%. The basin length is 25km. The average basin width is 10.3 km. Tuy Loan River joins with Yen River to form Cau Do River Cam Le, both discharging into Han River. Han River: Is the final join of Vinh Dien River, Cau Do Cam Le River, which discharges into Da Nang Sea. The flow regime of Han River is strongly affected by the tide ofDa Nang Sea. Phu Loc River: is a small River in Thanh Khe and Lien Chieu districts, which almost has no source and the River water flow is mainly from the coming tidal flow. Co Co River: is a previous coastal river linking Cai River and Thu Bon River at Cua Dai section. Currently, the river was filled and became dead-end. The river flow during dry season in Da Nang city is mainly backward from Cai River and Han River. 4.1.2.2 Hydrology The tidal mode of Da Nang Sea is irregular sun-tide and half sun-tide. Namely, in a half day, there is a spring tide and a neap tide but the magnitude and time between the spring tide and a neap tide is different. On average, each month has 3 sun-tide days, the maximum is 8 days and the minimum is one (1) day. 4.2 SOCIAL - ECONOMIC STATUS 4.2.1 Economy By size, the City'S Gross Domestic Product (GDP) compared with the constant price was 2,589.8 billion VND in 1997 and was increased to 9,199,755 billion VND in 2009 (a 3.5-time increase). On average, the GDP reaches 11.1 %/year (in the national scale, this rate is 7.2%/year). In which, the service sector makes up 54.54% ofGDP following comparison price, 51 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B industry construction makes up 42.19% and agriculture forestry aquiculture makes up 3.27% (Source: Statistical Yearbook in 2009). In the chart of Provincial Competition Index (PCI), since 2005 Da Nang has always been in the good group of the top competitiveness, especially it has ranked first in two years 2008-2009. 4.2.2 Population and Density It is forecasted that the population will increase from 890,490 people in 2009 to 1,243,264 in 2020. The population density in the urbanized areas of the city varies from 1,674 persons/km2 in Lien Chieu district to 18,380 persons/km2 in Thanh Khe district. Table 4-1 provides details of population increase and popUlation density. Table 4-1 and District Hai Chau 21.35 190,040 274,740 84,700 Thanh Khe 9.36 172,040 18.380 231,000 24,679 58,960 Son Tra 59.32 127,870 2.156 199,075 3,356 71,205 Ngu Hanh Son 38.59 63,930 1.657 105,656 2,738 41,726 Lien Chieu 79.13 132,440 1.674 154,793 1,956 22,353 CamLe 33.76 87,150 2.582 128,000 3,791 40,850 Hoa Yang 736.91 117,020 159 150,000 204 32,980 Hoang Sa 305.00 TotallAverage 1.283.42 890,490 694 1,243,264 969 352,774 (Sources: Do Nang statistical yearbook 2009; and Report on Socia-economic development Master plan ofDistricts to 2020 is provided by Department ofPlanning and Investment Plan) 4.2.3 Land Use Plan Currently suitable unexploited land for development and for city expansion is available in the west, northwest, southwest and southeast; however the Master Plan has given priority to development in the northwest, the area between Highway lA and Lien Chieu-Thuan Phuoc road because the trunk road network is readily available. The development of the south and the southwest is very much dependent on the construction of the trunk road to the south. Land use categories and their area for year 2009 and orientation in 2020 are given below and shown in table 4-2 52 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Table 4-2 Land Use Plan Area by purpose, 2008 No. Purpose In which Total Ural Urban Total land area 128342.24 104 192.03 24 150.21 1 Agricultural land 76722.27 66204.11 10518.16 1.1 Agronomy 8701.45 6505.81 2 195.64 1.2 Silviculture 67750.55 59514.37 8236.18 1.3 Aquaculture 189.73 111.49 78.24 1.4 Others 80.55 72.43 8.12 2 Non-Agricultural land 49 154.99 36831.41 12323.58 2.1 Residential 5856.55 2429.46 3427.09 Specific purposes: office, 2.2 39240.66 32 171.81 7068.85 military 2.3 Religions, beliefs 111.58 37.66 73.92 2.4 Cemeteries 743.60 487.21 256.39 2.5 Surface water 3202.59 1 705.28 1497.31 2.6 Other non-agricultural 3 Unused 2464.98 1 156.51 1 308.47 3.1 Unused flat 2233.15 966.28 1 266.87 3.2 Unused hilly & mountainous 24.60 24.60 3.3 Barren rocky mountains 207.23 190.23 17.00 4 Coastal 250.31 250.31 4.1 Other purposes 250.31 250.31 Source: Da Nang DONRE 4.2.4 Culture - Education Da Nang is the largest education & training center of the Central Region - Western Highlands and the third education & training center of the country (behind Ha Noi and Ho Chi Minh Cities). Currently, the city has 15 universities and institutes, 18 colleges, many professional schools and vocational training centers, and nearly 300 common schools from kindergartens to high schools (Source: Statistical yearbook in 2009). According to Da Nang Univerity Development Project by 2015 ratified by the Minister of Education and Training, more universities, research institutes will be established in the City as International University, Information - Technology - Communication University, Medicine University (Upgraded from the Faculty of Medicine), Technical University of Health (Upgraded from the Central Medical Technical College II), Open University, Postgraduate Training Institute. 53 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 4.2.5 Healthcare Currently, Da Nang city has 18 polyclinics and specialist hospitals, II district hospitals and medical centers, 47 commune/ward health stations and more than 900 private clinics. With the establishment of the Medicine University and the Technical University of Health in the city, Da Nang aims to become the medical center of the Central Region - Western Highlands and the country, providing high quality human resources and health services for the economic - society development of the country. 4.2.6 Tourism Da Nang city locates by Han River; its east reaches the East Sea with long beaches and so pristine Son Tra Peninsula; its north and west is surrounded by high mountains and hills. Craggy Hai Van Pass is a natural border between the city and Thua Thien-Hue province. Advantages in geographical position and natural conditions help promote the strong development of tourism and services sector in Da Nang city. 4.2.7 Traffic status Da Nang is in the central region of Vietnam on the north - south artery axis of road - rail- sea­ air, the important gateway of both the Central Region and Central Highlands. The city is also a final point of the East - West Economic Corridor passing the countries of Myanmar, Laos, Thailand and Vietnam. Railway: The north - south artery railway runs along the city with total length of about 30 km. There are five stations in the city: Da Nang, Thanh Khe, Kim Lien, Hai Van Nam and Hoa Chau. Airline: Possibly connecting with Singapore, Bangkok, Seoul, Taipei, it is very convenient for the international exchanges. Da Nang International Airport is being upgraded with total investment capital ofUS$ 84 million. In 2012 it will able to welcome 4 million visitors per year. Seaway: Being the third largest commercial port of Vietnam, Da Nang port is capable to accept large ships with gross-weight of 28,000 tones and 220 meters long. With an extremely convenient location for sea traffic, just about two days and nights, cargoes from the regional countries like the Philippines, Malaysia, Singapore, and Thailand ... can be able to call at Da Nang and vice versa. Roadway: The city has total 525,889 kilometers of roads (not including gorges, hamlets and soil paths) in which: o National highway : 69.126km o Provincial Road : 99.916km o Urban road : 356.847km Table 4-3 Information of traffic status Ngu Hoa , Hai Thanh Son Lien No. Parameters Unit Banh Chau Khe Tra Chieu Vang I Son J Area Krn2 24.1 9.3 60.8 36.5 83.1 737.5 2 Population x 103 people 200.7 155.9 105.0 46.7 67.5 153.0 3 Density of 103peopie/Krn2 8.328 16.763 1.727 1.279 0.812 0.207 54 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B population • Length of 4 Km 62.9 29.5 34.0 30.2 30.4 8.2 road z 5 Density of KmlKm 2.60 3.17 0.57 0.83 0.37 - road rKmil000 people 0.31 0.19 0.33 0.65 0.45 - Source: www.DaNang.gov.vn. 2010 In spite of that, existing traffic network of the city has not met current and future demands. While the road density of Thanh Khe and Hai Chau districts is 2.6-3.2km1krn2, the other districts only reach about 0.37 - 0.83 kmlkm2. The City'S average road density is 1.31kmlkm2, much lower than Hanoi (2.81 kmlkrn2) and HCM (1.66kmlkrn2) at the same time. 4.2.8. Electricity supply and lighting status Da Nang is supplied with the electric power from Hoa Binh hydropower plant via the North ­ South Ultra High Pressure Line 500 kV, which meets the needs of production and consumption of people. Primary Center of power supply - Da Nang substation 500/220KV - 450MVA Da Nang city is currently powered by the substation that includes two transformers ­ 220/110KV 220/110KV-125 MYA Substations have been being built: 110KV Stations (Lien Tri, Xuan Ha, Ngu Hanh Son, Hoa Khanh, Da Nang Industrial Zone, Cau Do, Hai Van tunnel, Lien Chieu, Hai Van Cement, Hoa Khuong Industrial Zone), 220kV Stations (Da Nang, Hoa Khanh) 4.2.9. Water supply 4.2.9.1 Water source Surface water The major River systems that can meet the water supply demand ofDa Nang City: Han River and the main River branches running through Da Nang: Cau Do, Tuy Loan, Yen, Vu Gia Rivers. Cu De River and tributaries flowing into the Gulf ofDa Nang: Nam River, Hac River Da Nang has been primarily provided water from the only River in the south of the city - Cau Do River. The water influx point in Cau Do River - Cau Do NMN is about 15krn far from the River estuary which is usually contaminated with salt in the dry season. The salinization has been more than IOOOmgll. Da Nang Water Supply Project - Phase I built one more anti­ salinization coarse water influx point in Yen River (at the upstream ofCau Do River) to supply the city when Cau Do River is contaminated with salt. In addition, Son Tra 1 Water Treatment Plant and Son Tra 2 Water Treatment Plant take water from streams originating from the mountains of Son Tra Peninsula, which have small capacity and change by the reasons. Therefore, Cu De River is clearly determined as a raw water source for Da Nang Water Supply Project - Phase 1. Ground water According to the documents of the University of Mining and Geology, based on the previous boreholes in 1992, the water reserve in Hoa Khanh - Lien Chieu areas likely reaches 55 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 3,000m3/day. With such limited reserve, the groundwater does not meet the water demand for the city. 4.2.9.2 The status ofclean water production and provision Da Nang Water Supply Company is operating 3 water supply facilities with total designed capacity of 155,000m3/day; the current capacity is 130,000-140,000m3/day. Cau Do Water Supply Plant is one of the largest factories with the capacity of 120.000m3/day; the Airport Water Treatment Plant with the capacity of 30.000m3/day is the medium-scale plant; and Son Tra Water Supply Plant has the capacity of 5.000m3/day. Regarding the water-pipe network, the Company's pipeline class I is 287km long (0) 200); pipeline class II is 253km long (0100-200); and pipeline class III is above 3,000km long. The total connectors include 120,000 electric meters. The rate of population to be supplied with clean water in six urban districts is over 65%, including 130,000 households with approximately 500,000 inhabitants. On average, the water consumption of the city is 128 liters/personlday. - 'peratmg status 0 f surf;ace water treatment pants m D a N ang C"lty Table 440 . No Plants Location Capacity (m..i/day) Design Exploitation Old Cau Do (Red Hoa Tho Tay Ward, Cam Le Temporarily 1 Bridge) Water 50,000 District suspended Plant New Cau Do (Red Hoa Tho Tay Ward, Cam Le 2 Bridge) Water 120,000 95,000 - lO5,000 District Plant San Bay Water 3 An Khe Ward, Thanh Khe District 30,000 30,000 Plant Son Tra Water 4 Tho Quang Ward, Son Tra District 5,000 5,000 Plant Total 205,000 130,000 - 140,000 Source: www.DaNang.gov.vn. 2010 10 years ago, the city made a plan to establish a modern and large scale water supply system in Da Nang. As a result, Water Supply Company finished it and put the City Water supply Project Phase I (l20,000m3/day) into exploitation. It is expected to finish the project phase II in 2015 and increase the water supply capacity to 325,000m3/day. I . nentatlOn fior water supply m Da Nang CIty T abl e 450' - No Major Year 2008 Year 2010 To 2015 To 2020 205,000 205,000 325,000 Water supply 1 (85,000 + (85,000 + (205,000 + 325,000 capacity (m3/day) 120,000) 120,000) 120,000) Average capacity 2 120,771 130,000 200,000 274,000 (m3/day) Ratio of population 3 63% 75 90 95 using clean water (%) Water using volume 4 standard 120 150 180 200 (l/personlday) Source: www.DaNang.gov.vn. 2010 56 ElA ojDa Nang Priority Infrastructure Investment Project Phase 2B 4.2.10 Wastewater collection and treatment system • Waste water is collected into the general sewer system and transported to 04 WWTPs of Phu Loc, Ngu Hanh Son, Hoa Cuong, and Son Tra through a sewer system which includes the following infrastructures: 15.7 km gravity culvert, 19.4 km pumping cuvert, 60 diversion chambers, and 18 pumping stations. • Manage and operate the sewage system is the responsibility of Danang Traffic and Drainage Work Management and Repair Company (TMDC). • The existing treatment plant area and capacity is listed in Table 4-6. T abl e 4-6 The power treatment 0 fthe eXIstmg WWTP I Parameters Units HoaCuong Phu Loc SonTra NguHanh WWTP WWTP WWTP SonWWTP Plant area ha 4.5 4.5 2.0 1.6 Reservoir capacity m31 day­ 110,799 110,799 29,065 21,500 night . Reservoir area m2 25,000 25.000 10,500 6,100 Hydraulic m31 day­ 36,933 36.93 9,688 7,167 retention time night (HRT) 3 days Source: CDM, 2010 • The treatment technology of WWTPs is similar including tools to keep waste, next to the sand collection tanks and then anaerobic tanks and discharging into the outside environment. The treatment diagram is shown in Figure 4-4. Screenings The Existing WWTP Design Note : ~ wastewater line sludge line Figure 4-4. The diagram ofwastewater treatment process at the present WWTPs 57 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B • The major drawback of the existing WWTPs: The BOD content in wastewater is low at 70mg/L as the ratio of households connection to the system accupies about 15 to 20% and wastewater is dilluted (Carl Bro,2009). Activated sludge is deposited so that the ability of exposing with wastewater can be very low. The treatment can remove 30% BOD and TSS. The smell and bubbles generate significally at the sluice-gates due to the anaerobic fermentation of accumulated emissions and smells. 4.3 ENVIRONMENTAL BASELINE STATUS 4.3.1 Baseline conditions in the city 4.1.1.1 Ambient air quality According to the monitoring data recorded by the National Environmental Monitoring Program from 1995 till present, in general, the quality of ambient air in the Da Nang city is quite good except dust concentration and noise level are high in high traffic density and construction activities occur. 4.1.1.2 Surface water quality The surface water sources in Da Nang city are from rivers, lakes and sea. Quality ofriver water The major rivers in Da Nang area include the Han, Vu Gia, Cu De, and Phu Loc Rivers. The Phu Loc River is the receiving body for a large amount of untreated domestic wastewater and is heavily polluted. The Han River is a downstream river which is used mainly for water transport purposes. The study by Carl Bro (2009) showed that most of the river water samples are polluted by organics mainly due to the discharge of domestic wastes and seafood processing enterprises and intensive water transport. Whereas Vu Gia River and Cu De River, located in the north of the city, are used for drinking purposes; most of the rivers are utilized mainly for agriculture and aquaculture purposes. The river water quality is rather good in the upstream and polluted in the downstream. The main reasons for this, also as reported by Da Nang DONRE (2007), are the intensive water transport activities and the discharge of industrial wastewater from Hoa Khanh and Lien Chieu Industrial Park. The Vu Gia and Cu De Rivers also serve as important sources for the city's water supply. The quality of water in Vu Gia River is quite good, except for the downstream river from Cau Do Bridge to the mouth of the Han River. Saline water intrusion occurs in this river in dry seasons. In addition to saline intrusion, Coliform contamination has the potential for adversely affecting the city's water intake3 , Quality oflake water There are 42 lakes scattered throughout Da Nang City. Except for Bau Tram Lake, with a surface area accounting for 46% of the total surface area of all lakes, most of the existing lakes are quite small. Nevertheless, most of the lakes play an important role in creating landscape, recreation, and microclimate regulation for the city. According to Da Nang DoNRE (2007), most of the lakes in the urban areas are polluted, with the organic content exceeding standard limits by I 3 times. Nutrients are also high the lake water. Ammonia concentrations were 3 Carl Bro, study on the wastewater strategy management for Da Nang city, 2009 58 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B reported to exceed standard limits by 1- 29 times in the 29/3 Lake (2001 - 2005), and by 12 18 times in Dam Rong 2 Lake. In addition, most of the existing lakes have also been found to be polluted with high concentrations of oil and grease and Coliform. Water quality of existing lakes in Da Nang, therefore, do not meet the Vietnamese fresh-water quality guidelines for protection of aquatic life. The main reason for this polluted situation is the discharge of untreated wastewater from residential, commercial and industrial units. Uncontrolled disposal of solid wastes is another reason for lake water pollution, because of low public awareness. Quality ofsea water Unlike organic pollution in the rivers, coastal water quality in Da Nang Bay is much better. Although the suspended solids (SS) concentrations were determined to exceed the standard limit by 1 - 3 times during the period 2003 2004 at Non Nuoc and Bac My An, the concentrations were observed to decrease to acceptable levels after from 2005. It was also reported that the coastal water at Non Nuoc Beach area was contaminated with ammonia and micro-organisms during the period 1997-2001. However, the pollution situation has been improved since then, with Coliform counts recently reducing to almost the standard limits. The ongoing discharge of raw sewage from the combined drainage system into the sea, during the rainy season, can be one of the main reasons casing pollution of the coastal East Sea water. 4.3.1.3 Ground water quality According to studies conducted by Da Nang DoNRE, city groundwater city was microbiologically contaminated. During the period 1998 - 2000, Coliform in groundwater exceeded the standard limits by 2 to 31,000 times. High Coliform contamination was recorded at Thanh Khe and Hoa Chau, and was above standard limits by 636 times. Also, a number of groundwater wells have report high levels of oil and organic contamination. These wells are located residential areas of My Khe and the Nuoc Man Petroleum Warehouses, and also in the proximity or Khanh Son Landfill and Hoa Khanh Industrial Park. The main reason for the groundwater contamination was inappropriate arrangement and management of wells, especially with respect to the required hygienic distances from toilets and other pollution sources such as oil warehouses, landfills, industrial parks ... The most serious groundwater pollution is also reported in some areas at Lien Chieu, Cam Le and Ngu Hanh Son. 4.3.2 The environmental baseline in the project area As the project is located in a large area and scattered in 5 districts of the city, selecting sampling positions and parameters for analysis must be representative, concerning sensitive works highly possible to be affected by the project during the construction and operation phases. 4.3.2.1 Quality ofair environment Rational With the purpose as baseline data for assessing the positive and negative impacts during construction and operation phases ofthe project, the sampling positions are selected as follows: Component A: one sample in each LIA was taken for analysis Component B: 59 EIA ofDa Nang Priority Infrastrncture Investment Project Phase 2B Sub-eomponent: B52 and B53: One sample in each constructed alignment was sampled. Sub-eomponent B54, B55a, B55b: Boa Xuan WWTP and Lien Chieu WWTP and Son Tra existing WWTP: 02 samples in each WWTP were taken, of which one sample was located at the middle of plant, and two remaining samples were at the bordering of the plant with the residential areas and at the end of the main directions of wind (South-West and North-East). - Component C: 03 samples taken at the surrounding crossroads: (I) between Southern Road and Mai Dang Chon, (2) Southern Road with Tran Dai Nghia Road and (3) at Km 0.000 of the Road. Time of sampling: rush hours from 10.30 to 1 L30AM in Da Nang city. Result analysis: According to the baseline data (shown in Appendix 4), in overall, the quality of air in the project area is within the standard, except some locations in sub-component B52, B53 and Southern Road are polluted by dust and noise (Chart 1). The specific level and positions that TSP swpasses the standard is shown at Chart 2 and Chart 3. Chart 1: Concentration of TSP in project area I3il\iD Sample 1 _S2 c::JS3 c::JS4 _S5 '/;"IS6 _S7 c::JS8 _S9 Components Standard Note: S= sample 60 EfA ofDa Nang Priority Infrastructure Investment Project Phase 2B Chart 2: Concentration of TSP in 852, 853 0.6 0.5 0.4 _TSP mg/m30.3 ---Standard 0.2 0.1 o K4 KS K6 K7 K8 Kg K10 Kll K12 Samples Chart 3: Concentration of TSP along Southern Road 0.4 0.3 mg/mt.2 .TSP 0.1 • Standard o K1 K2 K3 Samples Component B: The area of sub-components of B52, B53 is polluted by dust and noise. Especially, at the positions ofK4, K6, KIO, KII, and K12, dust concentrations fluctuate from 350 to 480 (j.1glm 3), 1.2 - 1.6 times higher than the allowable limit ofQCVN 05:2008. The main reason for that is due to high density of traffic. Noise level ranges from 58.6 -75.6 dBA and 719 locations where the noise level is 1 - 1.08 times higher than the standard. Component C: most of analysis samples are within the permission except dust concentration at K3 is 360 (pg/m3), 1.3 times higher than the standard QCVN 05:2008 and noise level of 77,4 dBA, 1.11 times higher than the standard. This is caused by heavy traffic density. 4.3,2.2. Quality ofsurface water Rational Similar to the air environment, the baseline surface water quality in the project area is established with representative samples at each component and sub-component of the project Component A.' 05 outlets that are receiving wastewater and rainwater from LIAs are taken for analysis with the aim at providing baseline for assess negative impact during construction phase and positive impact once project completed the wastewater is collected and treated. 61 ElA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Component B: Sub- components B52 and B53: there are no water sources nearby to receive runoff water and wastewater during construction and operation phases; Sub-component B54, B55a o Hoa Xuan WWTP: discharge its treated wastewater into Tu Cau River. Three samples at Tu Cau River were taken for analysis o Lien Chieu WWTP: discharge its treated wastewater into Cu De River. Three samples at around the discharge point were analysed. Component C: Bridge construction process can pollute surface water at the bridge crossing the Co Co river. Thus at the bridge location, samples are taken and analysis. Result remarks The results of sampling are set up and presented at Appendix 4. Result Assessment Chart 4. Concentration of surface water COD in project area 860 uso ~ +-------------~ 30 +-~=_--~. ~--------1 _52 20 c::::::JS3 10 o c::::::JS4 UA BS4 BSSa VD rlver- km CC river- km QCVN 0882 0+736 6+404 Sampling positions Chart 4. Concentration of 800 at the discharge point of Hoa Xuan and Uen chieu wwrp 30 25 +----­ 20 15 10 5 o Lien Chieu WWTP discharge Hoa Xuan WWTP discharge point point Notes: VD = Vinh Dien: HK = Hoa Khanh; CC = Co Co Component A: The COD concentration at the sluice-gates in the LIAs ofThuy Tu, An Hai Bac and Tho Quang is within the limits of QCVN 08:20081BTNMI B2. 62 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Component B: The water quality of Tu Cau River which receives the treated wastewater from Hoa Xuan WWTP meets Standard QCVN OS:200S/BTNMT, 82. The surface water quality of Cu De River branch at the sluice-gates of Lien Chieu WWTP is located within the limits of QCVN os: 200SIBTNMT, B2. However, the water source signs organic contamination due to receiving wastewater from Hoa Khanh Industrial Zone. The quality of Vinh Dien and Co Co rivers surface water where Hoa Phuoc and Co Co bridges will be constructed meets QCVN 08: 20101 BTNMT column B2. 4.3.2.3 Quality ofground water The sampling location and analysis results are presneted in Appendix 4-3. Analysis results show that: Component A: Groundwater of most LIAs is polluted by Coliform, Pb and NH4+. All LIAs have concentration of Coliform higher from 3 to 24 times than the standard of drinking water. Except Hoa Hai Bac and An Hai Bac wards, concentration of N~+ and Pb in ground water has 2 7 times higher than the standard. The reasons for that are possible because most wells that are about 5- 7 meters in depth and located about 1- 2 meters from toilets, so the penetration of wastewater into wells is capable. Recommendation: According to the analysis results, the quality of ground water is not suitable for drinking and cooking. However, except Thuy Tu LIA, currently most of the people in 09 LIAs use well water for cooking and drinking purpose. It is recommended that Da Nang responsible agencies should examine carefully the quality of groundwater in the LIAs to give the people appropriate advice to protect the community health. Component B: The quality of ground water is within the permission, except the concentration of coliform is higher than the standard of drinking water in accordance with QCVN 01 :2009/BYT. 4.3.2.4 Quality ofdredged material Analysis results Table 4-7 Quality of dredged material Parameters Sampling locations Pb As Cr Cu Cd D3 D4 Hoa Xuan WWTP area Lien Chieu WWTP area 6.62 6.70 ==t0.02 0.02 (mg/kg) 1.46 2.35 13.55 12.55 <0.02 0.02 QCVN Agricultural land 70 112 . 50 2 03:2008 Forestry land 100 12 - 70 2 Source: Infra -Tl, 312011 Remark: The quality of dredged material in Hoa Xuan WWTP and Lien Chieu WWTP meets standard ofQCVN 03: 200S/BTNMT. It can be used for agricultural purposes. 63 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 4.3.2.5 Ecology Da Nang is a city rich terrain, plains interspersed by mountains, hills and the sea. Therefore, in general, the ecology of Da Nang has rich biological diversity. The mountainous terrain with many watersheds is very meaningful in the ecological environment protection of the city. The coastal plain along East of Da Nang city has valuable aquatic ecosystem not only for Da Nang city but also for Vietnam. Green space The project area is mainly located at residential areas within the city. Flora in Da Nang city is quite diverse with more than 75 various types of tree planted in the city. There are mainly shade trees like Hopea smellata, Draccontomelum duperreanum, Mimusops elengi, Peltophorum ferrugineum ... Terrestrialfauna DN - PlIP, phase 2B has 03 components which are implemented in Da Nang city, including urban area, suburban area and agricultural area alternated by residential areas; therefore, terrestrial fauna mainly include animals, poultries and domestic fowls. There are no wild animals or rare species. Aquatic biological sources Regarding natural habitats, according to study results on the subject "Investigation and study of coral and associated creatures from Hon Chao to south Hai Van pass and Son Tra peninsula", it is detected that there are underground coral beaches at Da Nang inshore and there is a narrow distribution from tide area to the depth of < 12m. Coral reefs are in good conditions, mainly focus in Hon Sup, Bai But, Bai Nom, Huc Lo, Vung Da areas in the south of Son Tra peninsula. Regarding regional fauna, according to study results, there are 221 plankton floras. The areas where plankton fauna is mainly distributed include the middle area of the bay and in the northwest of Son Tra peninsula. Regarding plankton fauna, there are 162 species, in which, plankton fauna is distributed in the south of Son Tra higher than in other areas. Larva in Da Nang coastal area is quite diverse, especially crustacean larva. Generally, in the west of bay gate and in the south of Son Tra peninsula, larva components and density is higher than that in remaining areas. The project will have not any effects on biological resources in preservation area due to small construction scale. According to the analysis by Infra - Thanglong in 3/2010, the aquatic flora and fauna in the project area consists of the phytoplankton species belonging to Cyanophyta, Chrysophyta, Chlorophyta, Euglenophyta and Dinophyta, and some ephemeral animals as Copepods, Amphipoda and Larva and benthic animals as Polychaeta, Oligochaeta, Gastropoda, Bivalvia and Insecta. These aquatic animals and plants are widely distributed in freshwater, brackish and seawater, which have no economic and conservation values. 64 EfA -Phase 2B CHAPTER 5. ENVIRONMENTAL IMPACT ASSESSMENT 5.1 OVERVIEW OF PROJECT IMPACTS The Priority Infrastructure Investment Project of Da Nang (Danang - PIIP) - Phase 2B consists of three building components - A, B, C, which spread over six districts of the city. When the Project is deployed, the city has opportunity for the urban improvement, sanitation improvement and traffic infrastructure development, on the one hand, and contribution for the development and poverty reduction of the city, on the other hand. However, the Project builds on a large scale and is ranked Group A which is environmental sensitive and should be carried out impact assessment to minimize negative impacts and promote positive impacts brought by the Project. In this chapter, positive and negative effects of 03 components - A, B and C corresponding with 03 stages of pre-construction, construction and operation of the project will be reviewed. Component A: upgrading 09 LIAs, which are scattered in wide range with similar upgrade items like alleys, lighting, water supply and social infrastructure such as kindergartens, nursery homes and community houses. The upgrade scale is small, which mobilizes local labor with manual means. The environmental conditions in the LIAs are the same. Therefore the environmental impact assessment is commonly carried out and can be applied separately to each LIA. Component B is classified for the environmental impact assessment as follows: - Sub-component B52. B53: B52 expands the rainwater drainage route and B53 expands the wastewater collection route. The construction works are in the same area and are assessed collectively. The construction of Trung Nghia Lake embankments, which has several different characteristics, will be considered separately including the waste management in the operation and potential risks of the deep lake. - Subcomponent B54, B55a: two new WWTPs, Lien Chieu and Xuan Hoa, will be built with the same treatment technology and initial capacity, so they are evaluated in general and specific aspects of each plant such as discharge, receiving sources and buffers, in particular. Subcomponent B55b: pilot upgrading of Son Tra WWTP station with a very small scale, which does not affect the current collection and treatment. Son Tra station has two anaerobic tanks operating in paralleL The renovation option is to upgrade one tank into an aeration tank and the other works normally. The objective of the comparative effectiveness will be made before there is a decision to upgrade the existing station in the future. So its impact on the environment is considered similar to what occur in Sub-Component B54, B55a, typical in sludge dredging prior to upgrading. Component C: includes the construction of the Southern Link Road and 02 bridges crossing Hoa Phuoc River and Co Co River, which is divided into 02 SUb-components, road and bridges for the assessment. Here is the detailed impact assessment. 65 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B 5.2. IMPACT ASSESSMENT 5.2.1 Component A 5.2.1.1 Pre-construction Component A invests on upgrading roads/alleys, lighting, installing drainage and sewage system and constructing public buildings. The selection of project area and technical design are implemented with the community participation (Chapter 3), so the negative impacts on these aspects are insignificant. The impacts in this phase are focused on land acquisition and resettlement. a. Clearance and resettlement In Component A, 18 households lost the whole house and only one lost a part of their house. According to RAP, I0.512,5m 2 residential land and 636 households are affected. Therefore, the compensation, clearance directly impact the lives of people in the region, especially the white houses cleared, they have changed residence and get used to new life in the resettlement. This impact is considered negative at high levels but may reduce and affect only a short time. The details are presented in Table 5-1. Table 5- 1 Summaryo Impact on c earance and re1ocatlOn 0 f the project Affected residential land Affected houses Area Area No of households (ml) No of households (ml) Code LIAs ~ >" 0.. ..Q 0 ~ - -a ~ >" ~ 0.. ..Q :g ;:: - -a 0 E-< I Binh Thuan 36 6 42 868.8 I 1 25.5 2 i Hoa Cuong Bac 37 37 201.7 1 1 1.4 3 HoaHiep Sac 50 50 171.4 3 3 1,578.0 4 Hoa Tho Dong ! 12 1 13 93.0 8 8 1,414.4 5 An Hai Bac 202 8 210 2,986.5 6 6 460.0 6 Tho Quang 279 3 282 6,189.6 7 An Hai Dong 2 2 1,5 8 Tam Thuan 0 0 9 Sinh Hien 0 0 Total 618 18 636 10,512.5 1 18 19 3,479.3 Source: RAP report on PlIP DNphase 2B. 0212011 Impact accessment: Although the affected residential land and households are small when compared with the total residential land of 234,540m 2 and number of households of 6,691 households in 09 LIAs, the environmental changes in this area may put adapting pressure on affected households to get acquaintance with the new living environment and finding new jobs. However, the affected households will be compensated and supported to recover their life at least equal or better than that before. After the project completes, it will bring significant benefit for them. This impact is significantly negative but in short-term and could be easily eliminated. 66 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B b. Impacts on the air quality due to land clearance Dust generated from the site clearance of the demolition and repair of houses (households who are partly affected). So if there are no shielding measures when structures are demolished in this stage, dust will cause local pollution in the area. However, because the project deploys in five districts of Da Nang city with small clearance volumn compared to the total area of Da Nang city, impacts are only moderate and can be reduced. 5.2.1.2 Construction phase Sources • Dust and air pollution, noise and vibration of construction equipment • Domestic wastewater of workers' activities • Solid waste of dredging to install pipe-laying (sewer system and drainage system) • Solid waste of workers' activities Affected subjects: • Local people living around construction site • People in traffic around construction site • Worker of construction site Scale of impact For each 10 - 20m length of road step, time of construction activities is short (around 5 10 days). In a construction site, there are around 5 - 10 workers and some construction equipment such as concrete cutters, compactor, some of 5 tons trucks, scraper bucker... , depending on the road width, equipment capacity. The construction machine is selected to be suitable with small alley, therefore, the impacts are insignificant. a. Air pollution Source: The main sources of dust are from excavation and transportation activities. The calculation of excavated and transported materials for 9 LIAs presented in Appendix 5-1. Impact assessments: • Dust from excavation: Dust from excavation could be named as heavy particles which are easy to settle. The affected area for each construction site around 10m to 20m. However, the construction occurs in many narrow alleys where dust could accumulate and affect local people and workers. The impact is assessed to be medium, short term and mitigable. • Dust from transport: See Appendix 5-1, the volume of material being transported is approximately 18,000 m3 for the entire 09 LIAs. Dust is mainly from construction materials (soil, sand and small stones): Soil will stick to truck-wheels and crash out adjacent alleys and will be dispersed by wind to cause dust pollution; The process of unloading materials from trucks to collection points causes dust; 67 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Dust in exhaust fumes of vehicles; The dust is swept away by the traffic. General assessment: The dust impact is countable in narrow construction project areas, which will directly affect people health. However, dust can be easily mitigated by simple measures as watering. Its impact is assessed small and short term and mitigable. b. Noise and vibration Upgrading LIAs activities are small scales and simple technique so that small machines and equipment will be used for constructing roads as well as installing pipe-laying (sewage and drainage systems) in around 10 days. Consequently, the impact is assessed to be small, short term and mitigable. c. Wastewater Waste water pumped from construction areas Waste water from the workers' daily activities Rainwater and wastewater will be pumped from excavated holes for the construction of a water drainage system and is also considered as a wastewater source. Usually, after a heavy rain, storm water is trapped in pits, which will be pumped out to continue the construction. The amount of water pumped out does not contain toxic pollutants (mainly are settled and suspended solids (dirt, dust, sand ...) in the water). Therefore, its impacts are not considered high when flowing into receiving sources (rivers, ditches or drains) but cause unsanitary in the region, so we should take measures to control this wastewater. Domestic wastewater is generated from living activities of construction workers on site. The estimated number of workers present at site is 5-10 people, therefore, the domestic wastewater is estimated 0.25 -0.5m3/day. Because the site is completely within population area with small construction space and the workload is not much, portable toilets are impossible to install. The contractors may hire toilets of households in the region (as agreed by the employer and people). This impact is considered negligible and overcomable. d. Solid waste Solid waste generated during the construction from the following sources: Solid waste from the leveling and digging for the construction of a drainage system is one of the noteworthy solid wastes if there are no appropriate construction plans or storage areas and prompt transportation. Such type of secondary contamination can occur on the surrounding such as arising more dust in dry season or causing sludgedy for the region in rainy season on the rest of the road in construction site. Solid waste from the construction is a type of waste generared by construction activities such as scraps of iron and steel, cement packs, formworks for the construction of manholes ... They are considered solid waste and we should have good management plan for this source of waste ... Domestic solid waste: with such a project scale, workers at a construction point are not many (only about 10 people), so the amount of waste generated is not large. However, if it is littered without collection in the construction area, the landscape and the neighborhood will suffer greatly. 68 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B The impact of solid waste is assessed small and mitigable. e. Traffic disturbance Any construction activities will cause traffic disturbance so that when the upgraded LIAs project is implemented, most roads and alleys in LIAs (1.5 - 3m width) will be impacted. The construction activities such as excavation, temporary store of debris and materials without in good arrangement shall disturb the local traffic. The impact is assessed small and mitigable. f. Oil spillage and hazardous waste Definitely, the project construction will use equipment (breakers, excavators, sawers) or supporting equipment like generators which use diezen fuel and will be maintained or repaired. During the operation or repair, oil, fuel, grease cloth will be spillled ... If they are spilled into surrounding streets and construction area or on water resource, they will impact on the water quality, increase the risk of car crashes and may cause fire. The impact of solid waste is assessed small and mitigable. g. Damage to underground utilities in construction areas The construction of the drainage systems will dig road surface to make trenches. Most training activities will take place in residential areas where there are a number of underground utilities (electric cables, water pipes, telephones ...). Without survey, the construction will inadvertently damage utilities, unsafety for workers and local people. This impact is considered negative/moderate and can be overcome. h. Problems in the construction stage The operation of the Project may cause some significant problems such as: Bum up provisional fuel of construction equipment Traffic accidents caused by transportation means on the construction site or unreasonablly isolated items of construction cause accidents for motorcyclers in rainy season. Unsafe construction items cause accidents for active children in the construction site. Accidents caused by the use of unstandard electrical equipment and cables that endanger lives of workers and residents in the area. This impact is considered negative/moderate and can be minimized. 5.2.1.3. Operation phase The impacts in operation phase are more positive than negative and all the negative impacts are minor and mitigable. a. Positive impacts Reduced health risk The drainage system is being completed and connected to the city system, so all wastewater will be collected and treated before discharging into the receiveing water body. The status of infrastructures system (such as upgraded road! alleys, lighting, water supply ... ) is impoved. That will impact directly or indirectly on the people awareness about hygienic sanitation in the LIAs. The improvement can reduce water born and air born diseases. In addition, the people will have tap supply-water for drinking and cooking in stead of using the groundwater that is 69 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B being polluted by microorganisms. Thanks to the project investment, the community health will be improved. Improved water quality Both surface and groundwater quality will be improved due to the completion of drainage system. Improving the quality of life Besides the opportunity for infrastructure, houses refurbishment and accessibility to clean water, people will have chance to find work to improve their income and participate in the society. Table 5-2 Social infrastructures LIAs Constructions Positive impacts Hai Chau - Increased participation of villagers in District community meetings thanks to nice Binh Hien Community house community houses ward Binh Thuan Cam Van Kindergarten - Increased income for couples who have I small child due to kindergarten with a ward Binh An Community house good operation Tan Thanh community house - Improved capacity of villagers due to Son Tra sharing experiences through meeting and district learning at community houses An Hai Bac Tan An museum park; An - Improved environmental sanitation due Tan, An Cu3 and An Cu 4 to actively community management community houses Thanh Khe - Improved physical and mental health for villagers due to living in safe district environment and accelerated income Tam Thuan Phong Lan 4 childcare opportunities. ward Phong Lan 6 childcare Group 35 meeting hall - These contribute to social security and social equity and reduce poverty. The number of beneficiaries is about 4079 . households. I h. Negative impacts Road/alley surface can be damaged The community is often lack of O&M regulations, so trucks having larger load than the designed damage roads. The drilling and cutting for instalation of water supply systems and returning road bed incorrectly can damage roads. Impacts are rated moderate and can be minimized by the community rules. Arising smell Wastewater is collected in common drains. Without regular dredging or enlarging flow, which is blocked by waste, stagnant wastewater will flow over roads and cause unsanitary and foul­ smelling. 70 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B The impacts are small and can be minimized by community self-governing and periodically dredge. The risk of traffic accidents in alleys Usually, people disregard when taking part in the traffic in alleys. They do not wear helmets, so the risk of accidents can happen. However, this is small impact which can be minimized. Waste in public place Supposed that the community house promotes effective and people gather for meetings regularly. If there are no toilets and trashes, in addition to low sense of community that litter in public places, generated waste will be the risk of environment pollution and threathen people's lives in the region. However, according to the survey, the waste collection in the LIAs is relatively good. That experience will be applied at the centers of community activity. The impact is assessed to be small and easily minimize. 5.2.2 Component B 5.2.2.1 Pre - construction phase The main impact in pre construction phase is occured by activities of clearance and resettement, and techcical designing. Site selection has been already mentioned in chapter 3. a. Clearance and resettlement TabIe 5-3 Summary 0 ffIiectdland andH ouse h0 Ids a e lDistrictl Sub components Affected households Acquired land (m 2) t >. t: c:I - 1';> 0 t\1 ...... 0 3 ...... c:'O ll)c: :g lc:I c; E - ;:l u - ...... 0 c:I E-< ~ ~ E-< U ­ ll) 'J: '0 ,(l] et:: Lien Lien Chieu WWTP 83 174 257 35,147 64,853 100,000 Chieu Drainage system from Son Nguyen Phan Vinh street to 64 26 90 3,543 1,335 4,878 Tra Tho Quang street to the east sea Cam Hoa Xuan WWTP 177 94 271 56,624 163,790 220,414 Le Sewerage system from the Ngu Polytechnic University to Hanh Dong Tra Resettlement 45 7 65 8,860 34,565 43,425 Son area Nguyen Tri Phuong linking to Co Co river 369 301 683 104,174 264,543 368,717 Source: RAP Report on PlIP DN - phase 2B, 0212011 71 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Total affected land is 368717 m2 , of which 104 174m2 of residential land and 264.543m2 of agricultural land. 683 households are impacted, of which 301 households have to be relocated. The impact is considered significant and was evaluated in the resettlement safety report (RAP). b. Technical design ForB52. B53 Design technique for sub-components B52 and B53 is similar to sub-components of drainage and wastewater collection which were assessed in phase 2A. The issues which design consultant must take into account include: Choice of location for drainage system: Choice of the drainage pipelines in the design stage is in accordance with the regulations of the Vietnamese standards as well as the Standards of Construction Sector such as choice of the direction of the pipelines to be minimized in relocated households and affect the public traffic during construction. Calculate hydraulics of the drainage and sewerage system in order to reduce the climate change affect on the system. Design CSOs with good smell prevention structure. According to MONRE, the design must take the effects of climate change into account For Trung Nghia Lake Embankment The appropriate height to maximize the resovoir and hamonise with surrounding area Firm foundation and slope to prevent cracked embankment and landslide For B54. B55a The appropriate height to avoid impacts flood to damage constructions The technical solution meets the buffer zone standard of 40m QCVN 07/201OIBXD. 5.2.2.2 Construction and Operation The Construction and Operation of component B is divided into four separated sub· components: (A) extents ion of dainage and sewage system, (B) Northern Trung Nghia Lake Embankment and surrpunding landscape; (C) newly constructed Hoa Xuan WWTP and Lien Chieu WWTP and (D) Pilot upgrading Son Tca WWTP. A. SUB·COMPONENT B52 AND B53: EXTENSION OF DRAINAGE AND SEWAGE SYSTEM A.I. CONSTRUCTIONPHASE The wastewater collection pipelines are designed to run parallel to the storm water drainage system in the same area. During the construction phase, to avoid digging roads again, the two sub-components are usually built at the same time. However, the construction of sub­ component B52 - rainwater drainage system is the cause of more considerably environmental impact due to the installation of deeper big box culverts. Sources of impact Construction activities: include excavation, pipe-laying sewerage and drainage system; sludge dredging at current open canal. Transport activities: include tranport activities of construction materials and disposal activities of construction waste; 72 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B The scale of impacts: Depends on the duration of construction, in average, the scale of impact is about 01 year for drainage and wastewater collection system. a. Airpollution • Dust from excavation ofthe road tor drainage system Table 5-4 Balance of excavation and back-filling quantity Dust generation Excavation Back-filling Balance (m3) (m3) (m3) = E*E:uavation*1.2 (kg) Sub-component B52 170575.80 183062.40 12486.54 25 176.99 Sub-component B53 68465.53 113 241.85 44776.32 10 105.51 Total 239041.33 296304.25 57262.86 35282.50 Total dust pollution loading is estimated as 96.7kglday. Massive volume of dust generated will cause negative impacts on daily lives of local residents and passengers. It is noted that the air at Ton Duc Thang Bac Son cross-road, Ton Duc Thang - Ngo Thi Nham cross-road and Hoa Minh canal is polluted with dust as concentrations of 0,35mglm3, 0,47mglm3 and 0,46mglm3 respectively because of density population and traffic activities in these roads. The remaining pipelines are installed in area with low density of population If using appropriate measures such as water spraying, successive construction, dust is only generated locally, within a short time and therefore, has no significant impacts. • Dust (rom material transporting Concentrations of air pollutants such as S02, NO", CO, VOC and dust will increase proportionally to the quantity of excavated materials and transporting distance, as well as covering measures of trucks. Concentrations of dust and other pollutants in the air environment increase locally along then transporting roads, especially in the dry season. Main composition of the dust is sand with the size larger than 10 microns. These heavy particles are easily settled and affect directly to workers and local residents. However, it could not be dispersed very far. The excavated materials need to be transported: Transport = 57,262.86m3 It is assumed that the truck of 15 tons is used for transporting with the round distance of 10km, sand density of 1.4 ton/m 3 , and construction duration is 1 year. The sand is taken from Hoa Son and Hoa Yang. Number of trucks per day: (57,262.86 m3 * 1.4 ton/m 3 )/ [15 tons/truck * I years * 365 days/year] ::::; 15 (rounds/day) The daily oil consumption: (15 rounds/day) * 20 km * IL/5km::::; 60 (Llday)*0.8 = 0.048 ton/day 73 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B - . Table 55 A'l rpo11 uf IOn anddt Ioad'mg 10 t ranspo rf us '1 mgmat ena s Parameters Emission factor Loading (kg/day) Generated dust in transporting Dust: 0.1 - I g/m3 0.016 -0.16 Air pollution generated by transportation means Dust: 0,9 kg!ton DO 0.0432 such as dust, CO, SOx, NOx, VOC S02: 2.15 kg! ton DO 0.1032 NO x : 11.8 kg! ton DO 0.5664 CO: 6.0 kg! ton DO 0.288 VOC: 2.6 kg! ton DO 0.1248 The existing concentrations of NOx, CO and S02 in the project area are within the permission. In addition, the gases emitted during transportation, they can disperse and be diluted by the air. However, the gases are highly toxic to people with a mall concentration. These can adversely impact to those live along the road with heavy traffic. The impact is from small to medium and must be mitigated. b. Noise and vibration Except the box culverts going through Tan Tra residential area to Co Co River, Ngu Hanh Son district, which has low population density, the other pipelines run through high populated residential areas. In addition, large box culverts are installed under road centerlines and sidewalk at the depths of 2 - 6 meters. The digging for culvert installation and retained by steel planks to prevent landslide will be done by mechanical technique that will cause noise and vibration, affecting people's lives and works nearby. c. Risk ofland slide Land in Da Nang city belongs to a coastal type formed from sand and mixture of sand and soil that is easy to be slided. Ifculvert boxes installed as depth of more than 3.5m, buildings located within 10m from the construction site will be affected by the excavation. This was warned by the technical designer in phase 1 of PUP - ON. Furthermore, in case of steel sheets used for preventing it from landslide are not harmonised each other, which creates gaps between the sheets. Storm water will runs through and make sand slide. Consequently, the road broken that leads to adverse affect on nearby buildings, specially the drainage route on Le Tan Trung M Phan Van Vinh to Tho Quang road - Son Tra District. Here are some pictures of installation of box- culverts in Qui Nhon city where is similar soil like Da Nang, erosion caused serious consequence. The impact is significant and must be mitigated 74 EM ofDa Nang Priority Infrastructure Investment Project Phase 2B Figure 5-1 and Figure 5-2 Land slide and cracked houses caused by constrnction culvert boxes d. Domestic Wastewater Impacts on water environment are mainly caused by domestic wastewater of workers. Major pollutants in wastewater are suspended solids (SS), organic compounds (BOD/COD), nutrients (Nitrogen, Phosphorus) and pathogens (Coliform, E. Coli). The flowrate is calculated on the basis of norms and number of workers. Under the city standards, the water supply rate for a person by 2015 is I25Uday4. Thus, the wastewater rate is about 80010 of supplied water (IOOUperson/day). It is estimated of 20 workers in one camp in average. Thus, the flowrate ofworker domestic wastewater is about 2 m3/day. The impact is generally not sidnificant for small construction site, but they can affect the urban landscape and be required reasonable mitigation measures. e. Overflows The overflows include: Storm water overflowing through construction site will sweep away soil, sand into water-flow and cause obstruction and sedimentation for riverllake and pollute receiving surface water source. Low-level groundwater and rainwater can be stagnant in the uncompleted foundations. Normally contractors will now pump it out to continue processing the work. Pumping out water will be unsanitary and increased suspended-solid pollution for receiving sources. This effect is accessed moderate and mitigable. f. Solid waste • Construction waste In the construction period, construction solid waste generated includes cement, bricks, sand, stone, wood, scrap, and spilling materials. This kind of wastes is relatively small and inert, so it could be re-used for the purpose of ground leveling. 4 CalBm report, wastewater management strategy proposed for Da Nang city, 2009 75 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B • Dredged sludge In sub-component B52, the majority of box culverts are located under new roadways and sidewalks. Thus, digging soil is considered clean and usable to fill up after the construction. In addition, approximately 110m3 sludge is dredged because part of the culvert going through a current drainage ditch (L 367m x 1m wide) from Le Tan Trung to the East Sea. This culvert is steep, so the sludge accumulation is not much and has no smell. The amount of dredged sludge is around O.3m. Due to small amount of this sludge, we can dump with the sludge dredged in Hoa Minh cannal in Phase 2A. The area is near residential areas, dredging sludge can cause smell and spread sludge in the environment that need to minimize during the construction process. e6NG THOAT NUde MUA GIAI DO~N 2A ntd.N cONa Ttffl/o; T Jf1JOC THAI KHU TOC TMQ QUANG? u6 q()Ha (U41 OQoII.H. /~ ! !f' i ! ~ cx16' (76) Figure 5-3 Dreged sludge at Le Tan Tnmg to Tho Quang open canel • Hazardous waste During construction, grease and oil residuals may be generated from maintaining and repairing vehicle and machinery. According to technical documents, the average oil residual from construction machinery is around 7 liters per change of oil and the period of changing is every 3 - 6 months. If the number of vehicles and construction machinery is estimated 30, the oil surplus would be 35 to 70 liters/month. Such residual grease and oil are listed as hazardous wastes (code: A3020, Basel: Y8). The waste can be droped on land and polluted clothes for cleaning machines, which will cause adversely significant affect on enriroment if they are wasted in the environment. The impact is accessed moderate and need to minimize. Concrete used in the installation are also listed as hazardous waste. However, with small quantities of it can be collected and buried at the location specified, as required by law. 76 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B • Municipal solid waste Estimated solid waste is approximately 10 kg/day based on 0.5 kg/person/day and assuming that the workers are allowed to have meals at the site. This waste quantity is insignificant and will be collected and treated by the collection contractors. The impact is assessed moderate and mitigable. g. Risks ofLocalflooding In the construction phase of the drainage system, local flooding may occur due to lack of measures to redirect the flow and to prevent the material washed into the drainage system, especially in the heavy rains. h. TraffIC safety Most of the sewer systems construct through the planned areas, major roads, residential area, and traffic density is low, except the sewer pipe passes through Le Tan Trung street and the other goes through Ngo Thi Nham street to Hoa Minh channel is populated dense and high traffic density. The fencing used for dust prevention shoul d be considered the distance of traffic safety. In addition, some activities can affect traffic congestion and accidents on the road. Here are some typical image, such as: Storing debris and materials on the main road and untidy sites. Lack of facilities, signage, traffic guidance lights; Operation of construction machines and equipments on the sites without following the rules can cause traffic jam and risk of accidence for travelers. Several similar projects in the country, risk of accidents for travelers is cited (Figure 5-4, 5-5) as a typical example for contractors to find appropriate mitigation measures during construction. Figure 5-4 and 5-5 Risk oftraffic accidents • Other infrastructure services The sub-component B52 and B53 construction may cause damage to other infrastructure services such as electric cables, telecom cables and supply water systems if the design does not review underground facilities which pass through the area project and the contractor does not have any mitigation measures. The impacts rarely occur, but if that happens, the impact will be very serious. The impact is rated moderate and required mitigation measures. 77 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B • Local business Road excavation will negatively affect business activities of the households in the project area. Level of negative impact to business operations depend on the following factors: Access to the household business: the establishment of temporary paths for local people is necessary. However, some projects have ignored this request and make shops isolated. Duration of the construction phase: the slower construction period, the greater influence. Temporary storage of materials and excavated soil on the sidewalk; Poor recovery of road surface; Dispersed dust in the construction phase affects product quality, especially for the food business; i. Social disturbance Small number of workers at each site, the local authorities of Da Nang city are people who participate in managing the project, therefore the impact is negligible. j. Working safety Lack of safety gears and equipment for workers; Workers' incompliance with regulations on working safety; Electrical incidents, lightning, fire and explosion. This impact could happen to any works. If the contractor fails to comply with legal regulations on working safety, it is likely to cause unfortunate consequences in tenns of workers' psychology and health. The impact is significant and must be mitigated. k. Landscapce In the construction of drainage system, urban landscape could be affected by : Excavation activities cause dust which affect on visibility of passenger; Inappropriate leveling ~ fragmented road surface; Visual obstructions caused by construction barriers and equipments; Tree clearance; Lacking of management of excavated materials, spoiling and creating open dump sites; Careless recovery of road surfaces causes stagnancy on the street; A.2. OPERA TION PHASE In general, the impacts during the operation phase of sub-components B52, B53 are mainly positive such as the improvement in the urban landscape; reduction of bad smells due to the construction drainage system and innovation of CSO; reduction of flooding hazard; improved water quality and remarkable improvement in community health due to decrease in water-borne diseases. Besides, there are several negative impact with small scale and easily mitigated. a. Low household connection 78 ElA ofDa Nang Priority Injra.<;trocture Investment Project Phase 2B According to the study of Carl Bro, 2009, the percentage of household connection to the sewage and drainage system is about 20%. This situation leads to the lack of BOD in influent at the WWTP, meanwhile most of the wastewater from households discharge directly into the environment. As a result, the environment continues to be deteriorated, while the system is invested to be ready to collect and convey the wastewater from the families to the WWTP. Thus, increasing the percentage of households' connection to the system will play an important role in accelerating the effectiveness of the investment. h. Noise and smell generlltedfrom pumping stations, CSOS and outlets Noise and smell generated from the pumping station, CSOs and outlets is insignificant due to their improvement to overcome the existing PS and CSOS. The pumpers are immerged in water and in covered boxes, so the noise generation from them is limited. eso is innovated with one way valve to prevent sand and sea and river water flowing back the system. This has overcome the previous situation that sand blocks the system, preventing wastewater to run to the pumping stations and storm water to discharge into the receiving water body, which produces smell at outlets. A typical location of diversion chamber is illustrated at Figure 5-6. Figure 5-6 A typicallocalion ofdiversion chamber c. Health affect Toxic gases such as J.hS, CO2 and sludge are generated inside the system, which can be harmful to maintenance workers. However, one ventilation fan is installed in each pumping station for ventilation before maintaining and dredging sludge. The impact is insignificant and could be mitigated if workers are trained and provided with adequate protection. B. SUB-COMPONENT B: TRUNG NGHIA LAKE R.I. CONSTRUCTIONPHASE Trung Nghia North Lake is located in the middle of Trung Nghia residential area (Hoa Minh ward, Lien Chieu district). As described in Chapter 2, the lake functions as water reservoir which receives run-off from Trung Nghia area and discharging to Phu Loc River through the culvert box (B14 package). There are not many trees around the lake, one side is adjacent to the railway; the other sides are adjacent small roads. There is sparsely populated with temporary 79 EM ofDo Nang Priority Infrastructure Investment Project Phase 2B houses only. The lake is covered with weeds and dirts without any ecological as well as economic value. Figure 5-7 and 5-8 Current situation ofNorthern Tnmg Nghia Lake Under the package B52, embankment and landscape recreation are executed for the lake. According to CDM, the lake bank is constructed on the ground, so there is no demand for sludge dredging. Excavated soil is considered as clean soil that can be reused for leveling. The negative impacts could mainly be dust, gas pollutant emission and noise generated from exavation and transportation activities, which will increase concentration in the area. However, the lake traverses in a large area with scattered poppulation, the impact is insignificant and could be mitigated by mitigation measures applied in other simple constructions such as watering the materials in site and the vehicles must follow the Transportion Laws when operation for the project. B.l. OPERATIONPHASE Positive imapact: Based on the current characteristics and construction activities, renovation of Trung nghia lake will bring many benefits to the community as environmental and lanscape improvement. After the completed lake bank of 922.63m length, the lake will contain 162,366m3 run storm water, which not only creates a landscape area of 36,902m2 located in the middle of city, but could reduce flooding in the area, Nel!ative impacts: The surface water and the landscape could be polluted with domestic solid and wastewater because of bad habit of dwellers and poor management of municiple authority, The deep water in the lake could be dangerous fro children playing in the place without carefullly mamaged by their parents. The impact is significant and must be mitigated. C. SUB-COMPONENT BS4 AND 855a: WWTP Cl. CONSTRUCTIONPHASE Sources ofimpacts Potential impacts during constructing WWTP are presented in Table 5-6. 80 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B . . Table 56 PotentIaI Impacts tn the constructIonp] ase - h Key activities Source of potential impacts 1. Excavation, leveling and construction Leveling ~ Noise, dust, air emission from transportation means ~ Potential accidents ~ Damage the local ecology Excavation and back-filling ~ Water pollution ~ Noise, dust, air emission from transportation means ~ Potential accidents ~ Damage the local ecology i Worker gathering ~ Generation of domestic waste of worker ~ Increase in traffic density ~ Influence on local safety and social issues i 2. Transport activities Material storage ! ~ Contamination of surface water ~ Solid waste generation Material transport ~ Noise, dust, air emission from transportation means ~ Potential traffic accidents ~ Increase in traffic density Scale of impacts: Assumption: Duration of construction is about 2 years, of which about 01 months for excavation surface layer, 12 months for leveling the WWTPs, and 11 months for constructing infrastructure and installing equipment. Therefore, the number of workers at site depends on specific conditions, fluctuating about 10 - 30 persons in one worker camp. a. Air pollution • Dust generation from excavation and leveling Table 57 Ba Iance 0 f excava Ion andback - fiU'tng quanft - 1 ny Dust generation Excavation Back-filling Transported soil Construction (m3) (m3) (m3) =E*Excavation*1.2 (kg) Hoa Xuan 20,00Om3 334,400m3 314,400m3 98323.33 WWTP Lien Chieu 3 lO,OOOm 37,500m3 27,500m3 29691.33 WWTP Before leveling the ground, the 10cm- top layer should be taken out. The soil from rice field is suitable for leveling the ground after removing waste, grass, tree residues and so on. 81 EIA ofDa Nang Priority Infrastructure Investment Project ~ Phase 2B Dust will increase significantly when leveling is implemented with high volume (314.400 m3) in Hoa Xuan WWTP. It is assumed that 15ton truck is used for transport in 12 months; the number of trip is about 65 turns per day for levelling Hoa Xuan WWTP and 8 turns for Lien Chieu WWTP. The soil/ sand are usually dry. The process of downing soil/material from truck onto ground will create dust. Because of large construction area, installing fences for preventing dust is not economic. Therefore, the dust can be spread by wind and affect the surrounding residential area. The impact is significant, short term and must be mitigated. Similarly for Lien Chieu WWTP, there are about 8 trips per day. However dust dispersion from downing soil and transport will be considerable in the dry season, low humidity. • Dust and air pollutants emissions from material transportation Average a day has 65 trips of 15ton truck runs from borrow pit from Hoa Son Hoa Yang to Hoa Xuan WWTP the plant. Therefore, concentration of dust and air pollutant emission such as NO x, CO, S02 and CxHy will increase along the route, which will impact travelers and those live near to the route. The impact is short-term but significant and must be mitigated. b. Noise and vibration The noise and vibration generated by construction and traffic activities is inevitable. However, due to simple construction, and far from residential areas, the impact is short term and negligible. c. Wastewater • Domestic wastewater As assumption above, the workers for each time at one WWTP is around 10-30 people. The amount of domestic wastewater generated is approximately about 2-3 m3 per day. However, because of contamination of the waste (described in section d of A of 5.3.2.2), wastewater need to be collected. • Overflow Rainwater overflow will be entrained solid waste on the surface of construction area and will discharge to the receiving resources, cause pollution and sedimentation of rivers and lakes nearby. For the Hoa Xuan WWTP construction site, water overflow will affect water quality ofVinh Dien River; for the Lien Chieu WWTP construction site will affect the Cu De River Basin. The impact was assessed a insignificant, short-term and can be minimized. d. Solid waste: assessed same as section f ofA.I of5.2.2.2. e. Risks ofLocal flooding The WWTPs locate in low-land areas. When the project is implemented, the ground surface will level from 4.5m - 6m in Hoa Xuan WWTP and 5m Lien Chieu WWTP. If no drainage ditches is installed around the plants, the ability of river flooding is high. The impact is significant and short-term and could be minimized. f. Traffic safety Traffic safety problems in the construction of two WWTPs only related to the sand transport and construction materials transport to the project area. According to the calculations on the highest number of truck-trip is the leveling period (about 65 trips per day for 12 months), traffic density from material borrow pits to construction areas will increase, especially when 82 EIA ofDa Nang Priority Infrastructure Investment Project Phase 29 many project take place at the same time. The impact is short-term but significant and must be mitigated. g. Other infrastructure services This effect is negligible and can be ignored because the plant is built on agricultural land where the infrastructure development is poor. h. Local business The impact is more positive than negative because the construction does not block or disturb business activities. The workers probably increase their demands on food which is advantageous for dwellers along the transportation road and closely to the sites of exploiting materials and leveling ground. i. Social Disturbance: similar to assessment in A.I of5.2.2.2. j. Working safety: similar to assment in A.I of5. 2. 2. 2. k. Erosion ofriver bank Constructing discharging pipelines to the outlets, the activities will cause erosion in Vinh Dien riverside and Hoa Khanh canal, if no action is taken to empower the river bank. The impact is insignificant. C2. OPERA TION PHASE a. Air environment The air environment is mainly polluted by smell from the collection, treatment and discharge of waste. Table 5-8 shows sources of smells. Region Emission sources Waste screeners Smell from wastewater, solid waste and waste containers, scum collection equipment Sand sedimentation tanks Smell from sand containers, sand sedimentation devices Oxidized ditch Smell from wastewater, H2S and other smells Secondary sedimentation Smell from sludge anaerobic fermentation, mainly H2S, i tank mercaptan Chlorine Discomfortable Chlorine Sludge treatment Fermentation sludge smell and gas emissions equipment Sluice-eates Smell of wastewater and exhaust fumes Smell arises from most stages of the wastewater treatment process as shown in Table 5-8. Moreover the buffer zones in two WWTPs of Lien Chieu and Hoa Xuan do not meet TCVN 7222: 2002/BTNMT, which provides regulation for buffer zones (without drying sludge); WWTPs having capacity from 5000 - 30,000m 3/day.night is 210m and from 30,000 ­ 3 50,000m 1 day.night is 210 - 350m. QCVN 07:20101BXD (buffer of 40m wide) is reviewed for the application, therefore, the spread of smell in the environment is possible and requires a strict and modern technology for collecting and treating smell. In accordance with QCVN 07: 20 101BXD, all locations possible to make smell should be sealed and have thoroughly smell collection and treatment system before being discharged into the environment. This impact is high and requires mitigation measures. 83 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B b. Surface and grollnd water Since most of construction items of the plant were constructed by reinforced concrete with waterproofing layer, the ability of wastewater leakage without treatment into the soil affecting groundwater is negligible. Therefore the project focuses on assessment of impacts of treated wastewater to the quality of receiving surface water. c. Calculation ofreceiving capacity ofsurface water Boa Xuan WWTP Wastewater after treatment is discharged into Vinh Dien river (Tu Cau river) at Coordinate N: 15°59'17.4"; E: 1080 l3'19.3''. Selected parameters for calculation of receiving capacity of surface water at discharge point are BODs, N-N03 and SS due to the nature of domestic wastewater. • It is assumed that these pollutants do not react in the receiving water body. • The flow and upstream loading are constant. • The river section is negligibly influenced by tidal regime because slope ofTu Cau River is high, • It is completely mixed at the discharge point. • The river serves for waterway transportation only (Cad Bro, 2009; CDM 2011). In order to assess the receiving capacity of Tu Cau River where treated wastewater from Hoa Xuan WWTP is discharged to, the calculation is based on Circular No. 0212009IBTNMT dated on 19/3/2009 by MONRE. Receiving capacity of Maximum loading of Baseline loading of water body = pollutants + water body Selection of calculation scenario: Foundation: The waste management strategy in Da Nang city to 2040, the design capacity of WWTP of Lien Chieu and Hoa Xuan, and the parameters of wastewater, inputs and outputs, are summarized in Table 5-9. Tabie 59 Summaryof sewage capac ny, mput and omput paramet ers - 't ' t Parameters Design capacity (mJ/day-night) ! I 2020 2030 2040 • HoaXuan WWTP 20,000 80,000 320,000 Lien Chieu WWTP 20,000 40,000 120,000 Inputwastewaterpararneters (mg/I) BODS 154 154 200 N-N03 30 30 30 TSS 176 176 230 84 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B I Output wastewater parameters (mg/I) satisfy TCVN 7222: 2002 ~ I BOD5 30 30 30 I • N-N03 15 15 15 i I TSS 30 30 30 J Selection of the scenario: Assuming in the worst case, the treatment modules are broken and 100% untreated wastewater is discharged directly into the outlets. Scenario 1: 20,000m 3/day-night Scenario 2: 80,000m3/day-night Scenario 3: 320,OOOm3/day-night Basic information of receiving source The discharge upstream and downstream of water sources serving the shipping The data of the minimum flow of receiving resources is provided by CDM. At Khue Dong bridge, the smallest water flow is 67.37m3/s (source Ref. CDM -DNPIIP/2011ILO-0736 dated 07/0612011) (ttac hed' A,ppend'IX 52) a In - Basic information of receiving resources Average value at outlet (mg/I) BOD5 N-N03 TSS Water flow in dry season Qt= 67.37m3/s Water quality of receiving source 5 0.08 20 Water sources used for transportation purposes QCVN 08: 25 30 100 2008, B2 85 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B -~ Value Parameters Unit Calculation Scenario Scenario Scenario 1 2 3 Qs Vinh Dien river flow in dry season m3/s 67.37 67.37 67.37 Qt Wastewater discharge flow ofHoa Xuan WWTP in dry season m3/s 0.23 0.92 3.70 Vinh Dien river water quality at discharge points in dry 1. season mg/l - Cs(BOD5) 5 - ~ 5 5 Cs (N-N03) 0.08 0.08 0.08 Cs (SS) 20 20 20 ! Wastewater quality ofBoa Xuan WWTP at discharge point 2. when there are incidents mglt Ct (BOD5) 154 154 200 Ct (N-N03) 30 30 30 Ct (SS) 176 176 230 Wastewater receiving standard of Vinh Dien River (QCVN 3. 08:2008, B2) mglt Ctc (BOD5) 25 25 25 Ctc (N-N03) 15 15 15 - Ctc (SS) 100 100 100 Ltd = (Qs + Qt) * Ctc * 4. Maximum pol/ution load acceptablefor Vinh Dien River: kg/day 86.4 Ltd (BOD5) 146,019 147,506 153,519 Ltd (N-N03) 87,612 88,504 92,112 Ltd (SS) 584,077 590,026 614,077 5. Estimated amount ofwaste available in Vinh Dien River kg/day Ln= Qs * Cs * 86.4 -­ _.­ .... _­ .... ....... ­ ....... ­ ....... ­ 86 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B - Value Parameters Unit Calculation Scenario Scenario Scenario 1 2 3 Ln(BOD5) 29,104 29,104 29,104 Ln(N-N03) 466 466 466 Ln (SS) 116,415 116,415 116,415 Estimated amount ofwaste available at the output ofHoa 6. Xuan WWTP kg/day Lt= Qt * Ct * 86.4 Lt(BOD5) 3,080 12,241 64,000 Lt (N-N03) 600 2,385 9,600 Lt (SS) 3,520 13,990 73,600 The ability to receive wastewater of Vinh Dien river at Ltn[2J= (Ltd - Ln - Lt) * 7. discharge pointJ1] kg/day Fs Ltn (BOD5) 45,534 42,465 24,166 Ltn (N-N03) 34,619 34,261 32,818 _ .... _­ .... _­ .... _- Ltn (SSl____ 185,§51 18~,848 169,625 87 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Review of results: Based on the load calculation by the method of conservation of mass, if Ltn>O, the water source is capable of receiving wastewater at the worst case that 100% wastewater is untreated and directly discharged into the environment. The results of calculations show that the Ltn of BOD5, N-N03 and SS is positive with high safety. Moreover, the frequency that 8 modules are broken at the same time plant is very low because the Plant is modem and taken into account the design of a flood elevation to prevent submerge and the equippment of generators, which are ready to operate when the power grid is cut. Conclusion: Currently, the treatment capacity of 20,000 m3/day-night of Xuan Hoa WWTP is very safe for receiving sources. The Plant can be expanded to two modules by 2030 and 8 modules in full by 2040. However, the natural parameters such as drought and tides can fluctuate over time, which can affect the forecast accuracy of the model in the future. So before deciding to expand the Plant to 320,000 m3/day-night, it is necessary for us to measure very carefully receiving source parameters and wastewater parameters to protect the receiving surface water sources. In cases of natural fluctuations, the possibility of receiving sources is less than the current forecast, the following solutions can be considered: 1. Maintain pumping stations in Hoa Cuong WWTP to pump water to Xuan Hoa WWTP in normal condition. When there are problems, part of sewage can be temporarily discharged into Cam Le River where Hoa Cuong WWTP is discharging to reduce overload for Tu Cau River. 2. The pumping chambers for Hoa Xuan WWTP are manually operated systems. When problems occur, the pump chambers can be temporarily closed in order that wastewater can flow through Damp CSOs at the reception environment. Lien Chieu WWTP Selection of calculation scenario: Based on the wastewater municipal strategic management and the feasibility report mentioned in Table 5-13, the following scenarios are selected for calculations. Scenario 1: 20,000 m 3/day-night Scenario 2: 40,000 m 3/day-night 3 Scenario 3: 80,000m /day-night Scenario 4: 120,000 m 3/day-night Assuming in the worst case, all modules are broken and 100% untreated sewage is discharged directly into Cu De Rier. Information on receiving sources: The discharge point of Lien Chieu WWTP is on a branch of Cu De River at coordinate N: 16°5'19".9; E: 108°7'4.7", which is 80m wide and 25m deep. The upstream of the discharge point of wastewater is affected by Hoa Khanh industrial zone. The usage aim of the river water downstream is navigation. Suppose that the wastewater of Hoa Khanh.Industrial Zone does not change (Document No..... of Danang Department of Natural Resource and Environment), the quality of the reception source will not change. 88 EIA ofDa Nang Priority Infrastructure Investment Project ~ Phase 2B Estimate of water flow: Cu De River, which is subject to north and south rivers from Truong Son mountain range has quite large water velocity. The water velocity at the discharge point ranges from 0.1 to l.2m/s, according to the report of CDM in 2011 (Figure 5-9). Measured Velocity at ThU'Q'ng Nam 6 Bridge, 2 km Uptream of Nam 6 - Cu De River Mouth r'~ i \ ! I ! o 0 <=> 0 <=> 0 0 0 0 0 0 0 0 0 0 0 ~ 9 9 '=! 9 <=> 0 C> 0 C> 0 0 C> C> C> 0 o 0 0 <=> 0 .:; c;i 0 c;i 0 0 0 0 0 0 0 00 .e §5 "" 3 "" "" '" '" 0 '" ~ g "" 00 00 00 OJ 00 00 a- "" 00 ~ '2 0 .r 0 .e "2. "2. 0 0 --- ~ :: ~ ~ ~. ....... a - ~ ..~. :". --. - C' -~ --. - '" -< ~ -< -< "' --.. -< -< - ----­ - ~, ~ J"> ~, ~, ~: - ~--'-T'--'-'--'~"~--'~" ,... -. ---' ..... ~... ~~..". ~ .. -~. ~ __ ~..,..r_ .,---.,:,."~ . ""~'-~'""-Y"-.- ... ~-,,.-..-­ Figure 5-9. Water velocity at 2km upstream ofNam 0 - Cu De river mounth, CDM, 2011 It is assummed that the water velocity is equal at all points on the stream, the estimation of minimum flow at the discharge point is 0.1 x 2.5 x80 = 20m3Is Basic information of receiving resources Average value at outlet (mg/l) BODs N-N03 TSS Water flow in dry season, 20 mJ Is Water quality of curent receiving source 15 0.02 20 Water sources used for transportation purposes, QCVN 25 30 100 08: 2008, B2 89 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Value Parameters Unit Calculation Scenario Scenario Scenario Scenario 1 2 3 4 Qs Cu De River flow in dry !.eason m3/s 20 20 20 20 Wastewater discharge flow of Lien Chieu WWTP in Qt dry season m3/s 0.23 0.46 0.92 1.38 Cu De river water quality at discharge points in 1. dry season mK/l Cs (BODS) 15 15 15 15 CS (N-N03J 0.2 0.2 0.2 0.2 Cs(SS) 30 30 30 30 Wastewater quality ofLien Chieu WWTP at 2. discharf{e point mf{/l Ct (BODS) 154 154 200 200 Ct(N-N03) 30 30 30 30 Ct (SS) 176 176 230 230 Wastewater receiving standard ofCu De river 3. downstream (QCVN 08:2008, cot B2) mg/l r------ Ctc (BOD5) 25 25 25 25 Ctc (N-N03) 15 15 15 15 1--­ --­ Ctc (SS) 100 100 100 100 Maximum pollution load acceptable for Cu De Ltd = (Qs + Qt) * Ctc 4. river: kg/day *86.4 Ltd (BOD5) 43,700 44,194 45,187 46,181 Ltd (N-N03) 26,220 26,516 27,112 27,708 Ltd (SS) 174,800 176,774 180,749 184,723 5. Amount ofwaste available in Cu De river kf{/day L1t= Qs * Cs * 86.4 -­ LnJBOD5) 25,920 25,920 25,920 25,920 90 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B -­ Value ,~--- Parameters Unit Calculation Scenario Scenario Scenario Scenario 1 2 3 4 - 0­ Ln (N-N03) - 346 346 346 346 Ln (SS) 51,840 51,840 51,840 51,840 Amount ofwaste available at the output of WWTP 6. Cll De river kg/day Lt= Qt * Ct * 86.4 Lt (BOD5) 3,080 6,121 15,898 23,846 Lt (N-N03) 600 1,192 2,385 3,577 Lt (SS) - 3,520 6,995 18,282 27,423 Ltn[2J= (Ltd - Ln ­ 7. The wastewater receiving ability olCu De river /1/ kx/day Lt) * Fs Ltn (BOD5) 5,880 4,861 1,348 -1,434 Ltn (N-N03) 10,110 9,991 9,753 9,514 L -... ~ .... ~ Ltn (§SJ 47,776 47,176 _ 14,251_ 42,184 91 EIA - Da Nang Priority Infrastructure Investment Project, Stage 2B Result: Similarly, the Ltn of scenario 1, 2, 3> 0 and scenario 4, Lnt <0, demonstrate that the water only accept the safety capability of 80.000 m 3/day-night in case of 100% untreated wastewater is directly discharged into the environment. In case of operating at full capacity of 120,000m3/day-night, the receiving source will be likely unable to accept if there is a problem that 100% wastewater is discharged directly into river. Conclusion: In the first phase, when the capacity reaches 20,000m 3/day-night, the water source is capable of receiving 100% untreated wastewater. The Plant can be expanded to a safe capacity of 2 modules by 2040. But the source is not capable enough to receive the direct untreated discharge of 120,000 m 3/day-night of the Plant into the environment. The main reason is because the selected location for the current wastewater discharge is affected by the upstream of Hoa Khanh industrial zone. It is proposed that in the future, Lien Chieu WWTP can expand to a capacity of 120,000m3/day-night if the location moves toward the main branch ofCu De River downstream to reduce the water resonance ofHoa Khanh waste. Surely, 30 years later, there are changes in the receiving water due to the climate change impact. Therefore, to safe the receiving water, the City necessarily measures and assesses the receiving capability of the water source to take appropriate solutions. c. Solid waste Solid waste from treatment process includes Waste from crude and refined screen ditches Sediment sand Sediment sludge Biological sludge Based on Metcaft and Eddy, 2000, the quantity of sludge generation is calculated and presented in Table 5-10 Table 5-10 Generation of solid waste in Hoa Xuan and Lien Chieu WWTPs Location Emission facto~ Boa Xu an WWTP Q= 20,OOOm3/day Lien Chien WWTP Q= 20,OOOm3/day Grit chamber 0.005 m3/ 1,000 0.1 m3/day 0.1 m3/day Screening 0.05m3/1,000 m3 1 m3/day 1 m3/day Raw sludge Inflow SS: 176 mg/I 1760 kg/day 1760kg/day Efficiency: 50% Residual AI and 17 glm3 340 kg/day 340 kg/day polymer6 7 Sludge yield kg MLSS/kg BOD removed = 0.92 + Influent BODS: 154mg/L 2.480kg 2480kg + Effluent BODS: 30 mg/L I Assumed the 868kg I sludge dewatered 868kg ! to 35% moisture 5 Metcaft and Eddy, 2000 6 EIA report ofCEPT, 2008 1 CDM, 2011 92 EIA Da Nang Priority Infrastnlcture Investment Project, Stage 2B Quality of sludge: The sludge or bio-solids generates from both the primary and secondary processes. The sludge from the primary clarifier contains 3 to 8% solids and secondary sludge contains 0.5 - 2% solids (Charles.P. Gerba, et ai, 1996). The amount of crude sludge, sand and large-sized waste are transported to Khanh Son landfill. Particularly, biological sludge having good quality can be used to produce organic fertilizer. Based on the analysis in Chapter 3, the sludge should be treated, molded and buried at Khanh Son landfill in the absence of an organic fertilizer plant to receive. • Domestic solid waste Domestic waste generated from construction workers can be calculated based on the minimum numbers of worker working in plant (14-21 people are estimated). The estimated quantity of generated waste is about 7 - 10.5kg/day based on 0.5 kg/person/day and it is assumed that workers are allowed to have means at site. This quantity of waste is insignificant and will be collected and treated by the contractor under the contract agreement. • Hazardous waste Hazardous wastes in the plant include chlorine disinfection in the location where receiving chemical into and chemical store. Lubricants and lubricating for pump and repaired equipment area. We need to be collected for re-use or disposed as Vietnamese regulation. d. Runoffwater Rainwater overflow can carry wastewater leakage, sewage sludge leakage, or chemical leakage to watershed and affect the quality of the receiving source. However, according to the plant design, all wastewater and sludge will be collected to be treated. Because chemicals will be designed to recover and treated separately, leaking chemical risk maybe happen in accident cases (very rarely), the impact is small if the pollution source is managed carefully. e. Health effects • Hydrogen Sulfide (H2§l H2S is classed as a chemical asphyxiant, similar to carbon monoxide and cyanide gases. It inhibits cellular respiration and uptake of oxygen, causing biochemical suffocation. Typical exposure symptoms include: I· r--"'-"'-"'-"~'-"---""--'-"-"--"f'''-'''''''''-'-''-''''-''''--'''''''-"-,,-,,-,------.~--,,,-"'''-,,------- I 0 - 10 ppm Irritation of the eyes, nose and throat I ...... ,"........." ...." .... •....·_·--· .. 1 i • Headache Dizziness 10 - 50 ppm Nausea and vomiting Coughing and breathing difficulty • Severe respiratory tract irritation Eye irritation/acute conjunctivitis Shock 50 - 200 ppm Convulsions Coma I _ _ _.-'-'_' _____'_ _ __.,,_,,___""_ _ _ '_'_~""" Death in severe cases ,__,,__,_,,__._ _ _ _ _ _,___,,__,,_ _ _J, ___ ____'''_,.__ ,~,, ~ __, """_,_,~_,,, Source: http://www.safetvdirectorv.comlhazardoussubstanceslhydrogensulfide/factsheet.htm However, as designed, the content of H2S reduces 99% after deodorizing smells in a closed collection system. Workers work in the spacious airy environment with trees around the factory, so the impact is negligible. 93 EIA - Da Nang Priority Infrastructure Investment Project, Stage 2B • Chlorine gas Chlorine gas is harmful to eyes, skins and respiratory system, if workers contact it without careful protection. Chlorine is toxic but it is designed to disinfect wastewater thank to the automatic exposure system, the direct contact of workers is very low. Stocks are closed and well ventilated, so the impact is considered minor and reducible. • Pathogens According to document "Biological hazards at wastewater treatment facilities " (WEF, 1991), workers who work in the wastewater treatment plant will suffer from several risks in term of health when contact with pathogenic micro-organism in wastewater and sludge . . ' Ta ble 5-11 R'IS k assessment In contacfIng with mIcroorganIsm In was tewater or s1 d u 1ge Risk Impacts Hepatitis A infection High threat when contacting with inflow wastewater or raw sludge Other infection High threat Leptospirosis High threat to workers collecting sludge, and solid waste ... Parasitic infection High threat to workers collecting sludge, and solid waste ... . Intestinal diseases High threat to new workers I Contact with compost Effects on the contacted skin Aerosol and mist from wastewater treatment works can be the source to disperse virus and bacteria. The worker can catch bacterium contamination through respiration or skin contact. However, all the working equipments are covered to meet QCVN 07: 2010/ BXD. Therefore the impact can be significantly reduced. Conclusion: The effect is minimized if workers are trained and the plant operates professionally and seriously. Moderate and long-term impacts must be minimized. D. UPGRADING SON TRA PUMPING STATION SUBCOMPONENT Dl PRE-CONSTRUCTIONPHASE The Project extends in 2 hectares; the plant buffer does not meet TCVN 7222: 20021BTNMT. The option for this buffer in accordance with QCVN 07:20101BXD will be considered. Therefore, the design will take into account the posibility of smell collection, smell treatment before being discharged into the environment. D2 CONSTRUCTION PHASE a. Dust The scope of improvement is very little except irrigation canals and reservoirs. Dust generated during the construction is negligible. b. Sludge dredging Before the construction, one lake is dried for sludge dredging. Sludge is dredged in usual way that the Plant is being periodically used and discharged at Khanh Son landfill. The impact of sludge dredging is rated moderate and should be minimized. c. Quality ofsurface water ofsluice-gate The flow, 9688m3/day-night is retained in the processing lake 03 days. Currently, because of upgrading one lake, the retention time will be shortened by 1.5 days. Theoretically, the water 94 EIA - Da Nang Priority Infrastructure Investment Project, Stage 2B quality will be less because of shortening processing time. However, the lake is static anaerobic, so the exposure of wastewater to MLSS is very low. As the result, waste removal is very little. According to the analysis of Carl-Bro, 2009, the effectiveness of BOD5 elimination is 30% of the existing WWTP. Thus the level of influence on surface water sources is negligible compared to the past when the renovation time is estimated 30 days. »3 OPERATION PHASE a. Smell: lower than the old treatment system because half of the treatment system is aerobic. b. Solid waste: sludge formation is less than the old treatment system c. The quality of the receiving surface water sources are less affected than the previous because the output wastewater quality is better 5.2.3. Component C 5.2.3.1 Pre - construction phase a. Land acquisition and resettlement Although the project has considered public consultation and minimized impact on local life in the project area, the construction road will unavoidably affect a large amount of agricultural land and households the project area. Details are described in the table below. Table 5- 12 Summary a ffiecte d househ0 ldsandid an Affected households Affected land (m:!) (household) -- .::= - No Districts Wards .a ~ ->. - -; 1:-0 o j § - .­ Co;! ~ I: :g ~ 0 Co;! ~ f-o (fl­ .~ --' 0 ~ .( Hoa Phuoc I Hoa Yang 39 5 44 315 23.940 24.255 ward • 2 NguHanh HoaQuyward 227 44 271 7,952 182.467 190.419 i ~ Son Hoa Hai ward 21 rl--¥o--H2 14.441 38.637 I Total 287 i 67 32.463 220.848 253.311 Source: RAP Report PIIP DN 2B, 0212011 Thus constructing the road leads to 253,311 m2 land recovered, of which 32,463m2 of residential land and 220,808m2 of agricultural land and 367 households affected, of which 80 households have to be relocated. This impact is significantly negative because it affects greatly on 367 households. In addition, with large land area is taken, this component will cause significant loss in local agricultural production. However, these areas are low-lying and often being flooded, the changing of land­ use purpose is suitable. In the future, the land-use change could benefit local residents. b. Technical design • Flooding The terrain along the road passing Vinh Dien River and Co Co River is flat. The elevation between the river and the surrounding terrain is not high. Therefore, water often overflows the river into the field causing a widespread flooding. Bau Cung, Bien Kyand Bau Duong is the vestige of the old river which flows from Vinh Dien River and Han River to the Sea and had been filled. Currently, Khai Tay 2, Hoa Quy commune is the heavily flooded area. Villagers 95 EIA - Da Nang Priority Infrastructure Investment Project, Stage 29 say when the water rises about 1 m, the water overflows the trail of the old river into the fields where the southern link road acrosses. So when designing the culvert placement, we should analyze the flood flow to avoid erosion of road embankment and minimize the risks of flood (Opinion of Mr. Nguyen Ba Linh, Khai Tay 2 village). • Waterway Co Co river is not continent for waterway because it is dammed one side, however Cai river belongs to level IV for waterway with dimensions as B x H = 25 x 3,5m. 5.2.3.2 Construction phase Component C includes two sub-components: the construction of Southern Link Road (A) and the construction 02 bridges, Hoa Phuoc bridge acrosses Cai Rier and Co Co bridge acrosses Co Co river(B). A. SOUTHERN LINK ROAD Constructing the road is related to the transportation of a significant volume of materials from borrow pits to the construction sites. Aanalyzing to find a convenient way for transporting materials to avoid damage road and traffic jam is very important. a. Selection ofmaterial transportation routes • Positions ofpotential pits for the constntction The borrow pits used for constructing phase 2B are the same as those used for phase 2A. They are located in Hoa Son commune and Hoa Nhon commune, Hoa Yang district, Da Nang city. The soil is mainly composed of gravel and sandy clay. The site is estimated to have a reserve of>I,000,000m3. The pit is I8km away from Nguyen Tri Phuong bridge and 28.5km from the road end point in Hoa Quy. The transporting road is accessible. Presently the borrow pit is in use for the construction work in the area. T abie 5- 13 Borrow pl'ts No. Description Deposit (m.1) Exploration time Distance I (year) (km). I Construction stone pit ! 1 Hoa Phat pit 2,700,000 2015 6.9 2 Phuoc Tuong pit 4,465,000 2015 6.8 3 Hoa Nhon pit area 3,000,000 after 2020 7.0 II Soil bank 1 •Hoa Nhon commune 24,000,000 by 2020 Il.l 2 Hoa Son commune 16,720,000 by 2020 15.0 • .111 Sand stockpile area 1 Tuyen Son Bridge 8,000 3.5 !2 Metro adjacent area 6,000 0.7 3 Cam Le Bridge 3,000 2.5 4 Qua Giang Bridge 3,000 6.1 5 Tuy Loan Bridge 10,000 9.1 6 Nguyen Van Troi Bridge 5,000 5.3 Source: Survey result report on material pits (April 2010) 96 EIA - Da Nang Priority Infrastructure Investment Project, Stage 2B • Rock and coarse aggrezates Phuoc Tuong quarry lies in Hoa Yang district, west of the road alignment, 8.5km away from Nguyen Tri Phuong Bridge and 19km from the road end point in Hoa Quy. The rock at this site is granite blue-grey with black spots. The site is estimated to have a reserve of> I,OOO,OOOm3 • Presently the borrow pit is in use for the construction work in the area. Hoa Nhon quarry lies in Hoa Yang District, west of the road alignment, I km away from National highway 14B at Km22+00. The quarry is lOkm away from Nguyen Tri Phuong Bridge and 20.5km from the road end point in Hoa Quy. The rock at this site is granite blue-grey with white spots. The site is estimated to have a reserve of > 1,OOO,OOOm 3 . Presently the borrow pit is in use for the construction work in the area. • Sand - fine aggrezates Tuy Loan sand pit is located at Giang bridge (Km24+00 National highway 14B) in Hoa Yang district, Da Nang city. The capacity is above 200m 3/day. It is 9.0km far away from Nguyen Tri Phuong bridge and 19.5km away from the road end point in HoaQuy. Do Bridge sand pit is located in Hoa Yang District, along National highway lA at Km933+574. The sand pit is 5.5km away from Nguyen Tri Phuong Bridge and 16km from the road end point in Hoa Quy. The site has a capacity to yield >200m 3/day. Presently the borrow pit is in use for the construction work in the area. The material pits and the transporting routes are presented in the Figure 5-10. 97 EIA - Da Nang Priority Infrastructure Investment Project, Stage 2B ~LM " CH.I N~NH ilIA CHfT - flIA. V+T Lt MIiN TRUKO Figure 5-10 Reserved material pits and transportation routes 98 EIA report ofDa Nang Priority Infrastrncture Investment Project - Phase 2B • Transport route The material pits are at Hoa Yang district where access routes to the site are very convenient. They use the National Road lA, National Road 14B and access to the construction site from the south of the city. This helps to avoid cutting through the city. National Highway lA to the project station has two main approaches: 1. The main transport direction passing Highway lA, Highway 14 through Tuyen Son Bridge to Tran Dai Nghia, Mai Dang Chon and ending at a new construction road (near Co Co River). 2. Onother direction from CMT8 road, Highway lA and goes ahead to the starting point of the road at Ian 0 + 000. Furthermore, the contractors can use the waterways to transport the materials. T able 5- 14 The rna tenaItransportfIOn . a From Cach Mang From Tran Dai Nghia Waterways Thang 8 • Materials Stone, soil and sand Stone, soil and sand Sand only transported Advantages Shorter distance Do not go through the city Do not affect the Convenient access center road (big roads/streets) transportation Do not go through the city center Enough space for storing materials and establishment of workers camps Disadvantages Cannot transport the Longer distance (about 10 Ian Affect to materials to the other more than the route going waterways end of road (Hoa Quy through CMTT) transportation ward) Limited assess (small access routes - Mai Dang Chon, Luu Quang Vu) and about 200households living unevenly along the road Go through a populated area Pass by a cemetery Accumulation impacts from the construction of adjacent areas such as Ba Tung residential area Currently Mai Dang Chon road is being heavily damaged due to the transportation of other projects. Conclusion: Based on the comparation of the advantages and disadvantages of the approaches between Tran Dai Nghia and Cach Mang Thang 8; Tran Dai Nghia - Mai Dang Chon. The approach from Cach Mang Thang 8 is more favorable in terms of distance but hard 99 EIA report ofDa Nang Priority Injrastrocture Investment Project - Phase 2B to reach the end of the project. The direction from HWIA through Tran Dm Nghia - Mai Dang Chon will be used for transport of materials to the end of the project where we should pay attention to the traffic safety along residential area and road damage caused by the resonant effects with other projects which are under construction. Figure 5-11 and 5-12 Mai Dang Chon road (November, 2010) Impact assement from construction The environmental impacts during the construction of the southern Link road, Hoa Phuoc and Co Co Bridges are divided into main groups as follows: The overall impact caused by construction activities The impact on River flow and waterways by Bridge abutment construction Source of impacts Building the Southern Link Road - Building of Bridge abutments and piles Transporting raw materials for Bridge and Road construction In which, sources of impact of the component include: Dust Air pollution Noise and vibration - Wastewater Local Flooding - Flow diversion Solid Waste Working safety Affected objects Air environment Surface water: Vinh Dien and Co Co River - People living in Hoa Qui, Ngu Hanh Son, Hoa Phuoc, Hoa Vang Construction Workers Land Scale ofimpacts 100 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B It is assumed that time for the construction of the southern road, Hoa Phuoc and Co Co bridges is about 01 year. The number of workers mobilized is based on the nature of work, estimated about 50 -100 persons camping at the construction site. b. Air polution - Table 5 15 Quantlty 0 f excavated an d transported SOl'1 on the site 0 fS out hem L' k Road In /No. Item Unit Quantity Remarks !Excavatioll Filled back ! 1 Excavated soil m) 91.955,60 Clean soil, in-situ use Quantity of soil needed for backfilling: 3 2 Backfilling soil m 575.827,70 575.827,7- 91.955,6 = 483.872,1 m3 contaminated soil is required to 13 Top soil excavation m3 111.604,76 transported out of the area: . 111.604,76 m3 14 Sand embankment to m 3 strengthen weak soil 20.282,14 Sand: 20.282, 14m3 Source: Basic design ofSouthern road, 2008 Excavation 91,955.6 + 111,640.76 203,596m3 3 Vtransport 483872 + III 605 = 595,477m Before leveling the road, about 10cm of organic surface soil is dredged and removed out of the site. Southern road crosses the paddy field, so the organic sludge dredged will be rich in nutrients and "clean". It is good for tree planting. Therefore, it will be used for returning the baseline conditions for exploited material pits in Hoa Yang district. However, the excavation can generate dust. . Dust generation/day = Vexcavation* E(O.l23kg/m3)* 1.2 103,596 * 0.123* 1,2/365days = 41,9kg/day. The quantity of dust genetation is quite big. In additon, currently, Mai Dang Chon, Tran Dai Nghia roads are plluted by dust generation from other project. The dust concentrations is from 250 - 360 /lg/m3 compared to 300 /lg/m3 in accordance with QCVN 05:2010. However, the material transport routes can be used CMT8 road and Nguyen Tri Phuong road in case the road is completed or through the National High-way IA at KrnO+OOO to the beggining point of construction site (The Southern Link Road). The impact is significant but could be mitigated. • Dust and air pollutant emissions Vtransport = 595,477m3 ; the truck of 15 tons is used for transporting with the 2-round distance of 20km. The sand is taken from Hoa Son and Hoa Yang. Numbe r of trucks is 130 (rounds/day) and DO consumption is 0.420Ton/day) Air pollutant loading (kg/day) TSP 1 S02 INO x CO IvoC 0.2 -2.0 10.90 14.95 2.52 11.09 101 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B The existing concentrations of NO x , S02 and CO in project area are within the permission. It is considered that the road intersects with Mai Dang Chon at kIn Km2 + 621.38, Tran Dai Nghia at km Km4+958.23 Da Nang Tourism College being built and Truong Sa road at the end, so the density of transportation there will probably be high. The impact is medium and must be mitigated. c. Concrete and asphalt mixing The project requires a large amount of concrete and asphalt In the epidemiological survey of workers involved in production of tar they discovered that the incidence of lung cancer is higher than the increase of cancer or other toxic effects in studies of workers involved in the production and use of asphalt. These regular symptoms when contacting in a long time are dyspnea and aesthetic. Therefore, the location of the plant must be at least 500m far away from the residential areas and workers must be provided with protecting equipments to reduce the impact. d. Noise and vibration Noise and vibration increases in the project area due to constructing and transporting machine operations. However the impact is insignificant because most of the project area is located far from residential area. It is noted when constructing closely to 15, 17 and 18 residential groups, Khai Tay village, Hoa Qui ward, Ngu Hanh Son. e. Wastewater Assumed that water consumption is 125U person, the quantity of wastewater is 125*80% = 100Uday/person * 50-100 pers = 5 - IOm J/day. The pollution caused be domestic wastewater is considerable, if it is not collected and properly treated. According to statistical calculations for the developing countries of the WHO, the coefficients of pollution are presented in Table 5-16. Table 5-16 Pollution emission factors of domestic wastewater NO. Pollutants Emission factor (g/person/day) 1 BODs 45-54 2 COD 72 -102 3 Suspended solids (SS) 70 145 4 Oil and grease 10-30 I 5 Total Nitrogen (N) 6-12 6 Ammonium (N-NH4) 2.4 - 4.8 7 Total Phosphorus (P) 0.8 - 4.0 Source: WHO. 1993. However, the impact could be mitigated by apply septic tanks at site. Concentration of pollutants in domestic wastewater could be reduced significantly after treatment in septic tanks is presented in table 5-17 . T abie 5- 17 ConcentratlOn 0 f po11utants In domestlc wastewater NO. Pollutants Concentration (mg-II) Without I After septic I TCVN 6772-2000 treatment tank 102 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B NO. Pollutants Concentration (mg/l) Without After septic TCVN 6772-2000 treatment tank 1 pH - - 5-9 2 BOD5 469 - 563 281- 338 40 I 3 COD ,063 450 638 - 4 Suspended solids (SS) 729-1,510 438 - 906 60 5 Oil and grease 104.2 - 312.5 62.5 - 187.5 20 6 Total Nitrogen (N) 62.5 - 125.0 37.5 - 75.0 - 7 Ammonium (N-N~) 25.0 50.0 15.0 - 30.0 - 8 Total Phosphorus (P) 8.3-41.7 5.0 - 25.0 10 9 Total coliform (MPN/ 100ml) lOb _ 10" 1011 1.000 Note: TCVN 6772 2000 (Level III) f. Run offwater Polluted rainwater overflows the construction site due to excavation and installation of pipelines. Overflow rainwater contains high concentration of SS. Onsite material storage also causes pollution that affects on the water environment. Overflow water from spray vehicles and water in the pits contains suspended solids, oil. The volume of water is subject to the number of vehicles access to the site. The water volume is discharged from spray vehicles are about 50-100 litters/truck of 10 tons. g. Solid waste • Domestic solid waste It is estimated about 25-50 kg/day with references to the emission factor of 0.5kg/personlday and 50 - 100 workers/site. If the waste is located in unsafe places, it shall cause unhygienic condition at sites and adverse impact on the community health, ambient air and water environment. The impact is assessed to be small and mitigable. • Construction solid waste In the construction period, construction solid waste generated includes cement, bricks, sand, stone, wood, scrap, and spilling materials. This kind of wastes is relatively small and inert, so it could be re-used for the purpose of ground leveling. The impact is assessed to be small and controlable • Hazardous solid waste Generally, there are many transportation and construction equipment at construction sites. Therefore, lubricating the pulley crane could fall into the water and land. Otherwise, repairs as well as maintenance of machinery at construction sites, oil, grease cloth can become toxic agents to the natural environment and human health. Impacts are rated significantly if the contractor is not fully awareness about its effects or not well organized for the collection and proper treatment. h. Traffic disturbance and safety As calculated above, l30 turns of IS ton- truck are mobilized in 12 months for leveling the road, the negative impacts on traffic issues and roads are unavoidable. As analysed at item "transport route", transportation through CMT8 road must be better than through Mai Dang 103 E1A report ofDa Nang Priority Infrastructure Investment Project Phase 2B Chon. However 130 rounds travelling per day on only one road is impossible because it can damage the road and cause traffic jam. It is suggested that other ways should be used such as from NW No 1 direct to the Road at km 0.000 or use completed Nguyen Tri Phuong to access the end side of Road. The impact is significant but could be mitigated. i. SocioJ disturbance The number of workers mobilized for construction bridges and road is considerably over 100 people and camped in the locality. If the contractor does not cooperate to the local authorities to manage workers who working overtime, possible disagreements between local people and workers can occur. However, because the construction site is located far from residential areas so the impact can be minimized so the impact is insignificant. j. Working safety Lack of safety gears and equipment for workers~ Workers' incompliance with regulations on working safety; Electrical incidents, lightning, fire and explosion. This impact could happen to any works. If the contractor fails to comply with legal regulations on working safety, it is likely to cause unfortunate consequences in terms of psychology and health of workers. k. Local business The impact is more positive than negative because the construction does not block or disturb business activities but drivers and workers concentrate on the site and along the road of transportation. This probably increase their demands on food water, essentials, which leads to be more dynamic in business activities of dwellers trading along the transportation road and closely to the sites of exploring materials and leveling ground. B. CONSTRUCTION OF BRIDGE The impacts such as air pollutant emission, noise caused by the constructing machines and equipment and domestic wastes from worker at the site are similarly assessed as constructing the Southern Link Road, the environmental impacts on constructing bridges are focussed on waste discharged from pile drill, waterways and embankment erosion and landslide. a. Benthonite in drilling piles Bentonite is an absorbent phyllosilicate, in general, impure clay consisting mostly of montmorillonite. There are different types of bentonites, and their names depend on the dominant elements such as potassium (K), sodium (Na), calcium (Ca), and aluminum (AI). 8 ~" , ' \ Benthonite clay is used as the main constituents in water based drilling fluids with a dosage use of 5% I.... . volume. Studies on its impact on the environment have demonstrated that benthonite clay together with several other chemicals such as barite, salt (KCI), polimers (e.g potato starch, corn starch) and glycol are listed as no harmful sunstances to environment9 . In Vietnam, 8 From Wikipedia, the free encyclopedia, http://en.wikipedia.orglwikilBentonite 9 GEM, exploration drilling in the faroe shetland channel Environmental impact assessment ­ http://www.google.com.vnI#sclient=psy&hl=vi&site=&source=hp&q=benthonite+used+in+pile+drill+and+its+i mpact+on+environment&aq==&aqi=&aql=&oq=&pbx= l&fp= lladlf246ac890a9&biw= 1024&bih=517 104 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B the quality of benthonite is required to meet TCVN 326: 2004/BXD. Thus, the impact of using benthonite in drilling piles on the environment is negligible due to its nature and with a small percentage. However, during drilling piles, the most concerned issue is that the mixture of rock, sludge and debris may spill out. This is a potential source of impact to water quality and aquatic creatures. On average, one pile with D ::= I ,2m drilled in the depth of 50m will spill out 56m 3 (0.6m*0.6m*3.l416*50m ::= 56m\ The quantity of sludge mixture is 174 (Hoa phuoc bridge 144 piles + Co Co 30 piles) * 56m 3 = 9,744m3• If the mixture is discharged directly into the river, it increases turbidity and reduces ligh penetration. This not only impacts the quality of river water but water ecosystem, especially benthic community. The impact is significant and could be mititgated. b. Aquatic ecosystem Constructing bridges is related to drilling piles and drop solid waste into the water that may temporarily impact on the water quality and disturb aquatic especially benthic creature in Vinh Dien and Co Co River around the bridges. Pollute the water due to increased turbidity, suspended solid, organic matter from disturbed sediments, reducing the concentration of dissolved oxygen and photosynthesis of algae and aquatic life. Cause water pollution by waste, oil of construction equipment, damaging aquatic life. Temporarily change the structure of River bottom, kill or change bottom creatures. Combination of these factors can cause River ecosystem impainnent, reducing biological diversity. However, the ecosystem of Tu Cau and Vinh Dien Rivers does not have special or valuable species. The negative impact is partial and temporary, small scale and mitigable. A few months after the end of construction, the River bed structure and ecosystem will be stable and recovered waste. c. Disturbance to bottom sludge According to the study of Nguyen Van Khanh and Pham Van Hiep (Da Nang University) on the accumulation of Pb and Cd in clam (2009), the concentrations of Pb and Cd in bottom sludge in Da Nang rivers are 28.88 ± 11.30 ppm and 2.66 ± 1.55 ppm, respectively. In comparison with the standards for bottom sludge of Canada ISQG, Pb concentration is still within the acceptable level (30.2ppm) but Cd is higher than permitted value from 2.01-3.80 times (0.7ppm). However, these concentrations do not exceed the hazardous threshold in QCVN 07:2009 (lOppm for Cd and 300ppm for Pb). The pollutants from the bottom sludge can be dissolved during the construction. It can affect to the aquatic living. However, the impacts are not significant because there is no aquacultural activity in Cu De and Vinh Dien river. d. Soil erosion at riversides The construction of bridge will reduce the cross-section area, so the velocity and water height will be increased and the risk of soil erosion could happen. Nevertheless, the pile driving construction method will not affect greatly on the river bank because the hole diameter is small, about l.2m. e. Working safety The risk of working accidents can occur in all works with different level of danger, in which bridge construction is more dangerous, particularly workers working at 3m high and expose to 105 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B electrical equipment in the water environment like welding, drilling bored piles. This will become serious if the working safety is not proper concerned. The impacts are rated high and need mitigation measures. 5.2.1.1 Operation phase Road and bridges have the similar impacts during the operation phase. 5.2.1.1.1 Positive impacts In overall, the Southern Link Road and two Hoa Phuoc and Co Co bridges, after completion, will extend the traffic network from the West stretching down the East Coast of the city. The alignment will create favour conditions to support the rural people especially in Hoa Qui, Hoa Hai, Ngu Hanh Son, and Hoa Yang to access and benefit the public services such as heath care, educations, and cultural activities located in the central area. It also creates more opportunities for the people to improve their income and reduce poverty through trading activities, access markets and land use changes. Besides, the negative impacts are not entirely avoidable, which needs to apply feasible measures to eliminate them to acceptable levels. 5.2.3.3.2 Negative Impacts Negative impact during operation the road is focused on air pollution, noise and vibration traffic safety caused by transportation, affect of run off water on the receiving water body, and o & M worker health a. Air pollution • Air emission from transportation means Completed road will create opportunities for transportation. The number of means probably passing by the road is estimated as Table 5-18. Tabl e 5-18 Esimated transporta fIon fl ow-rates t' No. Type 2010 2015 2020 I (number/day) (number/day) (number/day) 1 Car 752 1.080 1.280 2 Truck 414 540 640 3 Bus 2.590 4.050 5.600 4 Motocycle 5.387 6.210 6.560 Source: Da Nang TransportatIOn Department, 2009 This means that air pollutants such as CxHy, N02, CO, C02, VOC and TSP emitted from the exhaustion of vehicles increase, which impacts adversely on the quality of air environment and human health, especially those living closely to the road. The level of impacts depends on types of vehicles transporting and their loading and the environmental conditions surrounding the road. The air pollutant loadings of different vehicles are presented at Table 5-19. Table 5-19 Air pollutant loadings 106 EIA report ofDa Nang Priority Infrastrncture Investment Project - Phase 2B Loading Emission factor (*) Distance No. Type (kg/1000km) (km/day) (gIh) dust S02 NOx CO dust S02 NOx CO 1 Car 10,800 0.07 1.62S 1.78 15.73 31.5 7.29 801 7078.5 2 Truck 5,400 0.2 1.16S 0.7 1 45 2.61 157.5 225 3 Bus 4,050 0.07 0.24S 1.78 15.73 11.8 0.4 300 2654 4 Motocycle 62,100 - 0.76S 0.30 20 - 19.7 776.25 51750 Total Note: (*) - WHO, 1993 S - %su/for mjile/, S = 1%, Average hau/age d,stance IS 10 km. The demand of transport on the road certainly increases year by year, which leads to the increase of the air pollutant loadings. However, except road crossed with Highway No.1, Mai Dang Chon, Tran Dai Nghia and Son Tra - Dien Ngoc, most of the road crosses the rice field with scattered population. The impact is insignificant, long term and must be mitigated. b. Noise and vibration Noise and vibration generated from vehicle machines, contacting between the wheels and road surface and using horns. Based on the forecast of transportation flow in 2015 and 2020, the noise level on the roadside could be estimated as following: Table 5-20 Noise level on the roadside I Year 2015 2020 Average noise level 75 79 T abl e 521 NOlse eve at ­ ·h mgl t Distance 1m 10m 15m 20m 30m 40m 50m 60m 70m 80m Noise level 75 55 51,5 49 45.5 43 41 39,4 38 37 (2015) Noise level 79 59 55,5 53 49.5 47 45 43,4 42 41 (2020) QCVN 26:2010 70dBA 6h - 21h QCVN 26:2010 55 dBA 21h - 6h Noise level is expected to increase from 2015 to 2020 and within 15m from the roadside, it does not meet standards. The impact is small and long term, therefore, the planting strips as a noise barrier are recommended. c. Traffic safety When the Road is completed, the increase in the number of vehicles is expected to increase traffic accidents. The accident is always a concern of society, especially on new routes connecting the rural areas and urban development. The main reason is the incompleted signal system and lighting as well as knowledge of the driver. However, these routes are in the transportation system's main city of Da Nang, so signage and support of traffic police will work to minimize accidents. Impacts are rated moderate, but long and should take measures to mmlmlze.. 107 EIA report ofDa Nang Priority Infrastnlcture Investment Project - Phase 2B d. Surface water The main pollutants from the operation of the bridges are oil and grease, dust, metals (Pb, Zn, Ni, Mn, Ca) resulting from vehicles on the bridges and roads or from the degradation of asphalt. The impact level is dependent on rainwater flowrate, receiving water body and density of transportation. This impact is considered insignificant because the runoff water will be collected by the drainage system designed at both sides of the road and final discharge to the sea via the drainage pipes along Son Tra Dien Ngoc Street. Thus the harmful substance concentrations will be diluted by the flow and the receiving water body at the end. e. Local flooding Southern Link road with average elevation 3m higher than the existing road elevation will be the dyke to prevent water flow from Cai River when the water raises and overwhelm the bank to flow across the rice field to the estuary because the elevation of this area is low. The impact is significant especially to those living upstream but it can be mitigated by designing solutions. f. Working health and safety The O&M workers are affected greatly from traffic accidents, occupational risks and air pollution, not only from the traffic but also from the O&M. The normal symptoms are respiratory failure, dyspnea and fatigue when contacting for a long time. 5.3 TANGIBLE CULTURAL RESOURCES 5.3.1 Tombs Building the southern link road and Lien Chieu WWTP is related to more than 177 graves, which are approximately 20-30-year-soil-graves, scattered in the region. The impacts and mitigation measures related to the relocation of graves are finalized in the RAP report. 5.3.2 Cultural and social works Table 5-22 The list of cultural works PROJECT CULTURAL DISTANCE TO THE WORKS LOCATION WORKS Hoa Tho Temple of forefathers Far from the installation of the project lamp oJ ­~ Dong low- Q.I post about 30m S b income area ~:6 - Cj .s::: Binh Thuan Giac Minh Pagoda ­ Away from some construction works of ... {I.! "0 low-income area K356/42 Hoang Dieu road about 20m ::I = -= Residential Hoa Cuong market, The upgraded works are from about 100 U ..... area No. 2 the angle between Le meters (Road E-El) = := Ba Trinh and Le Thanh N ghi road Thuy Tu - 02 temple of Ngo Xuan Thu is an upgraded road near the low-income forefathers - Alley Work approximately 50m area 33 Ngo Xuan Thu .• ::I Q.I -=- - 02 temple of U ... =.. ~ forefathers - Alley .. r. Q.I~ oJ"CI 65 Ngo Xuan Thu Thu 108 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B .£: Tho Quang Tho Quang Pagoda About 50m far from some construction = = .... =:I .... ~ residential Binh Thai road sites ooE-"C area Thanh Tam Thuan Thuan Thanh Pagoda About 120m far from the construction Khe low-income - 38/42K112 Tran district area - Thanh Cao Van i i Khe i Most social and cultural works are located in the project area but far from the works around 50 - 400m. Therefore, there are no affection of site clearance, dust and noise during the construction. However two small pagodas, Giac Minh Pagoda on Hoang Dieu road of Binh Thuan LIA is about 20-30m far from the construction site, may be affected by construction site. Mitigation measures: The Contractors limit noise and dust when carrying out the construction through the pagodas. Especially on festival days, The Contractors cease construction in that area. During the construction, ancient historical/cultural materials to be discovered should be reported to local authorities, district and provincial Department of Culture and Sports and Tourism. 109 EIA report ofDa Nang Priority Infrastnlcture Investment Project Phase 2B CHAPTER 6. MITIGATION MEASURES FOR NEGATIVE IMPACTS, PREVENTION AND RESOLUTIONS FOR ENVIRONMENTAL RISKS Mitigation measures are proposed to cope with the negative impacts that are presented in the chapter 5 with separated components in three project phases of pre- construction, construction and operation. They must be designed to minimize environmental impacts with the following principles: • They must minimize disruptions to daily life and movement demand of local people; • The proposed measures must be feasible in terms of economic, environment and social; • They must comply with standards and technical regulations; • They should use the environmental-friendly technical equipments and construction methods; • There is regular monitoring regime. 6.1. COMPONENT A Due to their small-scale construction, the mitigation measures for construction and operation of Component A will be presented in terms of ECOP. Detail of ECOP could be seen in Appendix 6-1 - T able 6 1 M'ItigatlOn measures £ cons ruc fIon and operafIon 0 f C omponent A . or Impacts Mitigation measures 1 ! Pre-construction phase 1.1 Compensation and resettlement Be shown in resettlement safety report 1.2 Clearance I 1.2.1 Dust 01,03,04, 06 I 2 Construction phase • 2.1 Dust 01,02,03,04,05,06,07, 2.2 Air pollutant emission AI, A2, A3, A5 2.3 i Noise and vibration NI, N2, N3, N6, VI 2.4 . Domestic wastewater by workers DWI,DW2 i 2.5 Runoff water RW1, RW2, RW3 2.6 Domestic solid waste by workers WWl i 2.7 Solid waste by construction W2, W5, W6 2.8 Hazardous waste 03 I 2.9 Traffic turbulence n, T2, T3, T7 j 2.10 Temporary flooding F2,F3,F4 ~ .2.11 Risks of accidents HSI, HS7, HS9 3 Operation Phase: 3.1 Damage to roads/ alleys surface DRI,DR2 3.2 Odor by sludge dredging 001,002 3.3 Wastewater discharged from households Connect to the existing system 110 EIA report ofDa Nang Priority Infrastructure Investment Project Phase 2B 3.4 Domestic solid waste at community houses - Provide two dustbins : one inside and one in playground - Contract with URENCO collect it daily - Raise awareness of dwellers on protecting environment 6.2. COMPONENT B 6.2.1 Pre - construction phase The main impact in pre construction phase is occured by activities of clearance and resettement, site selection and techcical designing. 6.2.1.1. Clearance and resettlement The details of compensation and land clearance are presented in the Resettlement Action Plan reports (RAP). 6.2.1.2. Technical design a. Sub-component B52, B53 Tidal Level The sewerage system in Da Nang city discharges directly into the Han River, the Da Nang Bay, and the East Sea. So designing for installing the drainage system must take tidal system in Da Nang Sea into account. The feasible study shows that high tide and low tide lasts for about 5.5 hours. However, sometime, the tidal pattern is 01 day-night. Therefore, the high tide and low tide last longer with an average of 11.5 to 13 hours. The typical level of high tide is from O.Om to +0.6m; the highest tide is measured at + 1.70m. These levels are correlated with the standard elevation in Da Nang city. Table 6­ 2 T"dall evel' Da Nang Clty 1 m Description Standard level in Da Nang city (m) Average sea level -0.10 I ! Measured highest tidal level (Da Nang Bay) 1.70 Measured lowest tidal level -1.07 I Typical highest tidal level 0.0 to 0.6 i The typical lowest tidal level -0.6 to -0.2 I Source: Center for Marine Hydrometeorology, National Centre ofMeteorology and Hydrology, Ministry ofNatural Resources and Environment And frequency of high tidal in Son Tra and Cam Le stations is presented in Table 6-3 Table 6-3 Water levels at the Son Tra and Cam Le Stations Calculated return period High tide (Son Tra Station), High tide & Flow (Cam Le (Frequency) mlmean sea level Station), mlmean sea level I-year + 0.4 +0.7 2-year +0.88 1.40 5-year + 1.08 2.50 lO-year 1.2 3.0 Source: CDM's work on Sub-Component B27 111 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B Conclusion: the tide was designed to calculate the depth and slope ofthe entire wastewater collection and rainwater drainage system. CSOdes;gn CSOs is required to prevent sand deposition, restriction of sand and grit inflows into diversion structure minimizing cleaning capacity. Sand deposition and river/sea water inflow in CSOs can be minimized by installation flap gates in the downstream areas. When there are high tides or waves, water will not inflow into the CSOs, while during rains, the upstream water pressure will make flap open automatically to drain water out. This can be carried out by a combination of: • Adjustment of CSO to horizontal instead of vertical direction. • Gradual improvement of the existing manholes directly connect with the drainage system to minimize sand and grit inflow; and, • Periodical cleansing sand, grit and debris. • For outlet with less l.Om width, arrange one flap that is as dimensioned as equal to the established outlet's width. • For 1.2 2.0m culverts, arrange two flaps that is dimensioned a half of the established outlet's width • For> 3.0m culverts, installation of flaps to be established. Number of flaps is calculated based on principle that total widths of flaps are equal or greater than width of the culvert. Conclusion: The design took into accont the flow separating chamber to prevent the tide when it rises. b.Trung nghia lake embankment Material for embankment construction includes: • Canal rool From bottom to berm of the Lake (elevation +2.00), use quarry-stone with cement mortar G 100, T30cm, with bedding crushed stone TlOcm, slope of m 1.75. From the berm to top of the Lake, to build precast R.C frame stone lx2 G200, in coordination with planting of Vetiver grass with slope of m= 1.50. • Body ofthe embankment is filled with hill soil r = 1.8T/m3 (equivalent to K=O.95). • Foot ofthe embankment: Build concrete retaining walls stone 2x4, G200. Foundation of the retaining walls is made of concrete stone 4x6 0100, bedded with coarse sand with bamboo pilings with density of 25piles/l m 2 ; length of the pile is 205m. • Since foundation bottom of foot of retaining walls (-1.45) is on Layer 2 that is relatively weak (grey fine sand containing some clay grains that makes sand plastic, saturated in granular state, SPT=02); to ensure no local settlement to foot of embankment causing embankment cracking, it is handled by driving of bamboo piles with density of 2 25piles/1 m and length of pile of 205m. • Edge of top of embankment: Structure is made of reinforced concrete stone lx2, 0200, T20cm with TIOcm 0100 stone4x6 concrete foundation. Conclusion: The design considered the embankment foundation and slope to ensure the sustainability of the project. 112 EIA report ofDa Nang Priority Infrastrocture Investment Project Phase 2B c. Sub-component B54. B55a Flooding design );> Hoa Xuan WWTP • The maximum flood water level applies to Hoa Xuan is 6.0 m. According to characteristics of items, to ensure the WWTP's operation at the 6.0m flood water level, the leveling design ofHoa Xuan WWTP is divided into the following areas: • Area for ancillary buildings: To ensure that the Chlorine Storage and Feeding Building and the Standby Generator Building will not be flooded when the flood level reaches 6.0 m, this area will be filled to 6.0-m elevation. • Area for equipment, sludge pumps (sludge handling area) shall be protected from flooding at level at 6.0 m elevation. The sludge handling area will be filled to elevation 6.0m. Foundation of the facilities will be at higher than the leveled ground. • The remaining areas will be leveled at 4.5m that matches leveled elevation of the surrounding areas (in accordance with the Letter No. PMU.KTh-149 dated 28 October 2010 by PMU). • The central control room, in the Administration Building will be located on the second floor. • All sockets, circuit breakers, etc. will be located at elevation ~ 6,20 m. • Use submersible pumps for wastewater and sludge pumping. );> Lien Chieu WWTP The maximum flood water level that applies to Lien Chieu is about 5.0 m. According to characteristics of items, to ensure the WWTP's operation at the 5.0 m flood water level, the leveling design of Lien Chieu WWTP is divided into the following areas: • Area for ancillary buildings: To ensure that the Chlorine Storage and Feeding Building and the Standby Generator Building will not be flooded when the flood level reaches 5.0 m this area will be filled to 5.0 m elevation. • Area for equipment, sludge pumps (sludge handling area) shall be protected from flooding at level at 5.0 m elevation. The sludge handling area will be filled to elevation 5.0m. Foundation of the facilities will be at higher than the leveled ground. • The central control room, in the Administration Building will be located on the second floor. • All sockets, circuit breakers, etc. will be located at elevation ~ 5.20 m. • Use submersible pumps for wastewater and sludge pumping. Conclusion: The design calculated the elevation for ground filling and rational equipment to minimize damages caused bv flooding for the pro;ect. Odor control design Two smell control systems will be provided to treat the smellous air. System 1 handles and treats the consolidated smellous air from the screening and grit areas. System 2 handles and treats smellQus air from the sludge handling building, including the trucking bays. The design criteria for the smell control systems are as follows: System 1 Ventilation rate: 12 air change/hour 113 EIA report ofDa Nang Priority Infrastmcture Investment Project - Phase 2B H2S concentrations 100 ppm, average and 250 ppm peak Number of Wlit I Type of smell control system "Built in place" biofilters H2S removal efficiency 99% System 2 Ventilation rate: 6 air changelhour H2S concentrations 10 ppm, average and 25 ppm peak Other reduced sulfur compounds* < 2 ppm *including mercaptans, dimethyl sulfide, carbonyl sulfide Number of unit I Type of smell control system "Built in place" biofilters H2S removal efficiency 99% Conclusion: The design calculated the deodorizing parameters caused by H2S, reaching 99% of removal efficiency. However, to collect whole odor, the entire system must be closed but the design does not include the control of pressure inside the system in order to avoid explosiveness of devices. It is recommendated that the Design Consultant should add a pressure control system for equipment operation. 6.2.2 Construction phase ECOP is applied to present the mitigation measures for construction of sub-component B52. BS3, B54 and B5Sa Tabl e 6-4 M'ltIgatlon measures tIor sub- component B52 and B53 . Impacts Mitigation measures iI Air pollution l.l Dust Dl, 02, D3, D4, D5, 06, D7, D8, D9 , 1.2 Gas poHutant emissions AI, A2, A3, 01, D3 2 Noise and vibration A3, N3, N5 3 Land slide ERI, ER2 i4 Domestic wastewater by workers WWl 5 Runoff water TUI, RW2 6 Solid waste by workers SWl, SW2 7 Solid waste from construction W4,D6 8 Asphalt W9 I I 9 Hazardous solid waste 02,03 I 10 Flooding F2,F3,F4 11 Local business PCl 12 Traffic Turbulence T3, T4,T5 13 Risks of accidents HS7, HS9, HSIO 14 Infrastructure services ECI, DCI, UI 15 sludge dredging W7,SEI,SE3,SE4,SE5,SE6,SE7,SE8 114 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B Tabl e 65 M' . - IttgatIon measures Iior su b- component B54, B55 a Impacts Mitigation measures I , .I Air pollution 1.1 Dust D3, D6, D7, D8 I 1.2 Air pollutant emission AI, A2, A3 2 domestic waste from worker WWI 3 Storm water runoff RWI, RW2 4 Domestic solid from worker WI 5 Construction solid waste W4,D6 6 Hazardous waste 02,03 7 Noise and vibration A3, N3, N5 8 Increased local flooding in rainy Create a drainage ditch surrounding the plant season because 20ha land of Hoa area to collect and store run - offwater for Xuan WWTP is graded from- sedimentation before discharging into Vinh 14.18m - +3.73m up to + 45 - 6m Dien river meanwhile the surrounding area is still lower 9 Similarly to Lien Chieu WWTP, Create a drainage ditch surrounding the plant increased local flooding in rainy area to gather and store run - off water for season due to leveling the ground sedimentation before discharging towards the from -O.Olm -+7.77m up to +5m canal that is receiving the wastewater discharged by Hoa Khanh industrial zone then runs to the Cu De river to the sea. 10 Traffic jam T3,T4, T5 11 Risk of accident HS7, HS9, HSIO Table 66The mI'f fIon measures or su b-componentB55b - 19a Impact Mitigation measure I I Dust D3, D6, D7, D8 2 Smell from dredged sludge W7, SEI, SE3, SE4, SE5, SE6, SE7, SE8 6.2.3 Mitigation measures for operation phase 6.2.3.1 For B52, B53 a. Suggestion measllre for increasing connection rate • Establish a specialized team to undertake management of drainage system in the area; then build a program to enhance the awareness of the community in connecting the drainage system of houses to the general drainage culvert of the city to protect the environment and public health. • Disseminate the environmental protection through mass media to raise people's awareness in response to the connection of households' drainage systems with the . drainage system of the City. • Provide the dwellers with incentive policies to create favorable conditions for them to connect their pipeline with the city system. 115 EIA report ofDa Nang Priority Infrastructure Investment Project Phase 2B h. Mitigation measures for maintainance of pumping station and CSOs • Before dredging, it is necessary to prepare a detailed plan on construction time, construction method, methods on security, traffic safety and environmental sanitation. • Sign a contract with URENCO to collect and transport the sludge and large debris to landfill • Put manholes opened and put on ventilation for a while before dredging. • Workers must be protected with masks, gloves and boots when dredging sludge and waste inside the system. • Not temporarily store sludge and sediment at residential areas. Not put sludge over night on roads. • Sludge transport vehicles must be covered to avoid scattered sludge on road. 6.2.3.2 Trung Nghia Lake embankment a. Domestic solid and liquid waste management • Raising the people's awareness for keeping clean sanitary (such as reducing wastewater discharge directly into the lake through connection to the sewer system of the city, not throwing waste into the lake ...). • Building some mobile toilets in the lake area; • Providing enough dustbin around the lake; b. Risk of accident • Children staying around the lake should be cared of their parents or their relative people; • Having the dagerous signal of lake depth; 6.2.3.3 For B53, B54 a. Surface water For Hoa xuan WWTP, monitoring quality of surface water at outtet every 06 months For Lien Chieu WWTP, monitoring quality of surface water at outlet every 06 months Deal with Hoa Khanh industrial zone to ensure that its wastewater is stable in quanlity and quality after discharging. Deal closely with DONRE on resposibility of Hoa Khanh industrial zone on its wastewater b. Odor mitigation ).1> Measures to mitigate smell generated in facilities In order to meet the QCVN 07: 20 10/BXD on the buffer zone, ensuring no smellous affect to the nearest residents, the best practice smell management is considered to include the following practices in the design and operation of the plant. • Extract sufficient air to maintain a significant negative pressure under the covers, and avoid an explosive atmosphere forming • Provide effective and efficient scrubbers with backup equipment and units; • Maintain positive dissolved oxygen in aeration tanks; 116 EIA report ofDa Nang Priority Infrastructure Investment Project Phase 2B • Provide aeration devices which have low rate of smell release, or covers over the aeration units; • Provide tall stacks for release of treated gases, and as a further backup ifthe scrubbers malfunction; • Provide a direct coupling for connection to septage delivery tanks; • Wash septage trucks under fully sealed conditions; • CoHect and treat air from supernatant pipes throughout sludge handling area and provide sloping floor to drains; • Cover biosolids storage hopper and extract and treat odours; • Provide backup equipment for all key items, including onsite emergency power supply; • Train all operations staff to appreciate the importance of odour control; • Provide reclaimed water sprays, or other methods, to control scum on aeration tanks and clarifiers; • Monitor hydrogen sulphide levels at the inlet and exit from the scrubbers; and carry out an odour audit at three year intervals; » easures to mitigate smell generating from sludge M • Provide sealed bins to cart biosolids from the site; • Use septic trucks for transporting sludge. Sand and raw sludge should be move to landfill for dumping. • The fine sludge must be processed to reduce quantity, smell and pathogens before transporting to its final disposal site. Acccording to Bitton, 1994, sludge can be digested both anaerobically and aerobically. Anaerobic digestion typically takes place over a period of2-3 weeks on large covered tanks at the sewage treatment facility. The process has the advantage of producing methane gas, which can be recovered as an energy source, low cost, easy operation and production smellless. However the process can produce greater amount of sludge that has to be disposed of. On the other hand, the aerobic digestion takes place in a 10 20feet open tank for 12 -30 days depending on the prevailing temperature. Oxygen concentration is maintaincd over ImglL to avoid production of foul smell (Bitton, 1994). After digested, the sludge usually is treated further by adding chemicals such as lime, alum, ferric chloride to aggregate suspended particles then followed by dewatering to reduce volume of water by several methods such as air drying in spreading basins, centrifugation or vacuum filtration. • As the buffer zone used for Hoa Xuan and Lien Chieu WWTP is just 40m, if aerobic condition method is applied to digesting the sludge, the equipment must be designed to gather smell to treat before discharging it to the ambient air. Dewatering sludge must be in covered equipment to avoid smell dispersion. The Centrifugation or vacuum filtration method can be considered. » Odor treatment • The smell is flowed to the desmellation room for a further treatment before discharging into the air. Bio filter method is suggested to use for treating smelL In case of the concentration of H2S is still higher than the standard, it should be absorbed by active carbon. 117 EIA report ofDa Nang Priority Infrastntcture Investment Project - Phase 2B • 1.2m fences surrounding the plant must be built and trees must be grown surrounding inside the plant and along sidewalks. Trees provide us with shadow, lanscape and can reduce and prevent smell from dessimination. • Concentration of H2S within the facility and border with the residential area has to be regularly checked. c. Solid waste management ~ Solid generated {rom wastewater treatment process • The accumulated sand and debris, rubbish should be transported to Khanh Son Landfill for a further treatment. • Fine sludge generates from domestic wastewater treatment plants mainly contains nutrient and low toxic substances such as heavy metals. In addition, pathogenic microorganisms reduce significantly after sludge treatment. In anaerobic digestion, in general, a plant uses mesophilic digestion (30 -3S°C) with a retention time of 14 ISdays can expect a 1 2 log 10 removal of total coliform, feacal coliform and feacal streptococcus ~Straub et al. 1993). Temperature for aerobic digestion are usually mesophilic (37 C) with a retention time of 10 ~20days, the organic matters that are diverted to CO 2 and H20 lead to decreased carbon sources for bacteria, hence, the number of bacteria are most likely reduced due to nutrient deprivation. Also, as mentioned above, after digestion, the sludge may be air dried and treated with lime. Both processes reduce the numbers of pathogen. At pH 12 for at least 2 hours, the NHt+ in the sludge diprotoned, resulting in the production ofNH3. The combination of high pH and NH3 can reduce enteroviruses and coliform remarkably (Satter et ai, 1976).. • It is suggested that the sludge after treatment should be used for landfarming or organic fertilizer production to avoid overload for Khanh Son land fill and waste of a raw material source for organic fertilizers (US EPA, 1994). One of the typical references guiding for using the sludge as organic fertilizers is cited at Appendix 6-2. ~ Solid waste generated from workers • Two dustbins with capacity of 20L for each are equipped: One will be put in the office, one will be in the control building; • Workers are trained to keep the hygienic conditions within the plant and waste is collected and put in the dustbins. • The solid waste is transported together with sand and debris and rubbish from the processing ~ Hazardous solid waste • Hazardous dustbin with a signal of dangerous picture on shell must be equipped in machines repairing room. • Workers must be trained on the negative impact of the hazardous waste to the environment and community health • Chlorine must be stored in sealed tanks put on a stain still tray to avoid leachate to the ground. The lechate is collected and reused. • Clothes with oils and grease are collected and treated in accordance with regulation. 118 EIA report ofDa Nang Priority Infrastructure Investment Project Phase 2B d. Measures to reduce impact ofrunoff water • Do not allow untreated wastewater, sludge leachate, chemicals to spill out on the ground • After completion of construction phase, the site must be ordered and no abundant materials remain on the site • Drainage system design keeps unchanged e. Measures to mitigate impact ofhealth effect Level ofhealth effect depends on four types ofexposure as follows: • Route: inhalation, ingestion, dermal • Magnitute: concentration, dose • Duration (minutes, hour, days, lifetime • Perquency: daily, weekly, montIy and seasonally Chlorine gas • Staff must be trained and provided with protecting equipment before allowing them to operate the plant • Mask and gloves are ready in the chemical room • Chemical room must be well ventilated and instructed. • Well prepared plan to work at chemical room ensuring as less time as possible Pathogens • The wastewater from cleaning offices, plant and leachate from sludge devices must be gathered, covered and transferred to the influent intake headwork immediately • Debris, sand, polymer must be taken separately out from the process daily, covered then moved immediately to landfill or a fertilizer plant • Direct workers must be adequately equipped with mask, gloves • Shift working Hydrogen sulfide H2S Regularly monitor concentration ofH2S in working site 6.2.3.4 Sub-component B55b (Pilot upgrading ofSon Tra WWTP) Collecting and removing odor design is like in the sub-component B54 and B55a. Sludge waste: applied as in the sub-component B54 and B55a. 6.3. COMPONENT C 6.3.1. Pre- construction 6.3.1.1. Compensation and land clearance As mentioned in item 6.2.1.1 119 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B 6.3.1.2 Design for reducing flooding affect For the road, the peak flow is calculated based on frequency of 5% or 20 years storm running period, the road elevation must be over H5%. Culverts must have sufficient capacity for the top flow with frequency of 5%. For Hoa Phuoc Bridge must be capable with peak flow from storm water frequency of 1% or 100 years of repetition cycle. Calculation on culvert dimensions, high clearance and road elevation is based on this peak flow. Field survey data on highest water levels along the route is presented in Table 6-7. data Station Hmax (1996) Hmax (1998) Hmax (1999) Hmax (2007) Remarks K.m 0+726.65 3.41 4.40 5.16 4.91 K.m 1+869.80 3.52 4.94 5.57 5.74 K.m 2+571.74 3.06 4.06 4.92 4.54 K.m 3+437.50 2.97 3.95 4.97 5.93 Southern Linlk K.m 4+561.50 3.3 7 5.03 5.64 Road K.m 5+779.50 3.18 5.48 K.m 6+420.07 3.29 3.98 5.2 4.98 Water level in flood-tide: on 18/03/2010, H 0.05 HoaPhuoc K.m 0+726.65 Water level in ebb-tide: on 18/03/2010, H -0.75 bridge Water level in flood-tide: on 29/07/2010, H 0.15 K.m 6+420.07 Co Co bridge Water level in ebb-tide: on 29/0712010, H 0.15 6.3.1.3 Waterway design • The height of the box slab changes from 2.25m to 4.5m from the middle span to the pier head: keep unchanged Span structure: 5x33 +50+75+50+2x33: keep unchanged 6.3.2. Construction phase 6.3.2.1 Southern Link Road Tabl e 68 M' . - Ihgation fIor t he Southem L'nk Road I No. SOURCE OF IMPACTS MITIGATION MEASURES 1. Dust 1.1. Operation of construction vehicles and Apply ECOP: AI, A2, A3, A4, A5 equipment 1.2. Excavation work Apply ECOP: D2, D3, T7, T8, RBI 1.3. Temporary storage of excavated materials Apply ECOP: D5, W3, W4, W5, W6 2. Air pollution 2.1. Operation of construction vehicles and Apply ECOP: AI, A2, A3, A4, A5 equipment 120 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B 2.2. Vehicles' speed is limited when travelling in Apply ECOP: A7, Tl, T3, TS, T6, T7, T8 the project area 2.3. Smell from organic soil dredging activity Apply ECOP: OD7 3. Noise and vibration 3.1. Operation of excavating and construction Apply ECOP: NI, N2, N3, NS, N6, N7, N8 equipment and water pumping in the construction site 3.2. Transportation activities 4. Wastewater 4.1. Polluted stormwater overflows to Apply ECOP: W2, PC I, PC2 construction sites due to excavation work 4.2. Daily domestic wastewater of workers AQglyECOP: WWI, WW2, WW3 5. Local flooding 5.1. Higher road elevation Apply ECOP: FI, F2, F3, W3, W6 6. Solid waste 6.1. Construction waste Apply ECOP: W2, W3, W4, WS, W6, W7, W9 6.2. Workers' living activities at the construction Apply ECOP: A4, WI, HSIO, HSII site 6.3. Hazardous waste Apply ECOP: 0 I, GW2 6.4. Dredged surface organic soil Apply ECOP: OD7, D4, DS, D6, OD4, ODS, W7, W8 Reused for reclamation of material pits of Hoa Vang district The contractors must make an agreement with local governments and CMC. 7. Traffic safety 7.1. Traffic jam caused by construction activity Apply ECOP: Tl, T2, T3, T4, TS, T6, T7, T8, 7.2. Local road dama12;e T9, WBI, WB2 7.3. Unsafe means of construction when moving on the road 7.4. Lack of means, sign boards and signals for traffic guidance 8. Workin2 safety 8.1. Lack of safety gears and equipment for Apply ECOP: HS I, HS2, HS3, HS4, HSS, workers HS6, HS7, HS8, HS9, HSlO, HSII, HSI2, 8.2. Workers' incompliance with regulations on HSI3, HSl4 labor safety 8.3. Electrical incidents, lightning, fire and explosion 6.3.2.2. Construction ofbridges a. Solid waste from drilling piles • The solid waste from drilling that are generated onboard needs to be carefully collected, managed and transported to regulated places. • The sludge could be analysed beforing making decision. If the sludge is polluted by heavy metals, it would be dumped at Khanh Son landfill due to the small quantity. If it meets the standard, the sludge could be stored in separate place with an agreement of the local authority or private companies, families. 121 EIA report ofDa Nang Priority ltifraslrocture Investment Project - Phase 2B • Stored place is confined ensuring no affect to the surrouding environment b. Water ecosystem • Training workers and strict implementation of contract regulations on rubbish treatment. • The Contractor is responsible to install solid and liquid waste treatment systems at construction camps. • Monitoring surface water environment at the bridge construction site to evaluate the affected level. c. Soil erosion at the riverside • Remove soil layers on both sides of the river, reinforced concrete at the position where can happen erosion risk, areas close to bridge. • Limit construction (digging and leveling) around the river bank during the rainy season d. Work safety • Follow strictly the requirements of pile driving technique • Understand about hydrometerology before construction. • Do not pour concrete in the rain or when the wind reaches 5th level • Check the scaffold, settlement, cracks in the scaffold to detect settlement of the braces. • Equip the safety net under the working floor • Guide waterway transportation 6.3.3. Operation phase (for both the Southern Link Road and Bridges) a. Control ofair quality • Planting strips of trees on sidewalks along roads to prevent dust and air conditioned environment • Appropriate distribution of traffic, installation of adequate signage system for motor vehicle traffic to reduce noise and pollution emissions. • Periodic cleaning and collecting waste on the road • Water the road to reduce dust b. Reduction ofnoise and vibration • There must be insulated safety corridors • Do not allow the buildings encroaching preserved land for road. • Conducting periodic monitoring and inspection of the vehicle noise traffic. • Installing signs to reduce speed, do not squeeze the hom when vehicles go through residential areas. • Planting strips of trees along both sides of the road to reduce noise and vibration to residential areas. c. Solutions in traffic safety • Creating a safe corridor for pedestrians 122 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 20 • Creating barriers to prevent pedestrians cross the street illegally • Installation of traffic safety signs and speed limit signs in the area • Installing lighting system to ensure safety for drivers. • Carrying out campaigns on raising public awareness about traffic safety d. Overflowing storm water Longitudinal drainage system is designed simultaneously in construction stage of the road. A drainage system with centrifugal concrete pipes of D800 - D 1000 or longitudinal RC culvert drainage with dimension of l500x1500 to 2000x2000 will be arranged on road sides. Drainage calculation is made based on sections with consideration of the possibility of supplementing volume from surrounding project.Manholes and catch basins will be arranged on road sides by interval of 20m - 30m. At the same time, the horizontal drainage system is arranged with longitudinal drainage system to collect overflow water into drainage ditches. On planned route, 08 points of horizon culverts connect with longitudinal culverts in the positions estimated to join with the general drainage system in the region to Cai River (Table 6-9). . . Table 6-9 StatlstlcaI tabl eo f dfamage ongl . lOa cu verts No. Station Drainage direction Size Remarks I 1 KmO+ 179.33 Right Left l500x1500 Assembled RC 2 Kml+182.78 Right- Left 1500x1500 Assembled RC 3 Km 1+799.90 Right - Left 1500xl500 Assembled RC 4 Km2+109.58 Left - Right l500x1500 Assembled RC 5 Km2+ 619.14 Left - Right 2(2500x2500) Assembled RC 6 Km3+393.09 Left - Right 1500x1500 Assembled RC 7 Km3+436.10 Right - Left 1500x1500 Assembled RC 8 Km4+ 289.96 Right- Left 1500x1500 Assembled RC Source: Demonstration of Southern Link Road South Project, March 2011 • Conclusion: stormwater containing hazardous wastes like oil from vehicles overflows into longitudinal drainage then pour into the planned drainage system of the city and the receiving source ofCai River, without affecting the surrounding ecological environment. f. Local flooding and land erosion Transverse drainage culverts Flood control basin horizontal culverts located in low-lying areas, irrigation ditches, and rice fields have been designed by the Consultant. According to the feasibility report, on the route, 10 locations are installed with basin horizontal culverts as specified in Table 6-10. . T able 6- 10 StatlstIcs 0 fdr amage transverse cu verts 10 th e area . No. Station Drainage direction Size Remarks I 1 KmO+120.00 Left - Right D1500 Assembled RC 2 KmO+920.00 Right- Left D1500 Assembled RC • 3 Kml+120.00 Right- Left D1500 Assembled RC 123 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B Right Left Assembled RC i 4 KmI+535.00 D1500 5 Km2+080.00 Right - Left D1500 Assembled RC 6 Km2+384.00 Right - Left D1500 Assembled RC 7 Km2+520.00 Right Left D1500 Assembled RC 8 Km2+560.00 Left - Right D1500 Assembled RC 9 ~5+414.50 Left - Right D1500 Assembled RC 10 Km6+ 120.00 Left - Right DI500 Assembled RC Through surveys and public consultations, the environmental consultants recommend that the design consultants study an additional flooding culvert system in Bau Cung creek, Bien Ky creek and Bau Duong creek at km 2 + 640 and km 2 + 692 with appropriate magnitude for the drainage. Reduction ofroad embankment erosion The slope reduction depends on the geological conditions of the road and embankment material. For normal material, embankment height is s; 6 m, gradient is 1 / m 1 / 1. 75; embankment foundation on the sand is 1 / m 1 / 1.5. At the sloping ramps which are regularly flooded, it is neccessary to sod to prevent erosion and create beautiful scenery along the route and reinforce with concrete (40x40x5) em. The road embankments are sodded to limit road erosion when there is heavy rain andflood. Conclusion: The road embankment erosion limit should remain as designed. g. Health safety Workers have to follow work safety regulation strictly when working on road and contacting with asphalt, oil and paints. 124 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B CHAPTER 7. ENVIRONMENTAL MANAGEMENT PLAN In accordance with OP 4.0 I, the draft EA provides an environmental management plan (EMP) which is designed to: (a) Identify the set of responses to potentially adverse impacts; (b) Determine requirements for ensuring that those responses are effectively complied; and (c) Describe the means for meeting those requirements. 7.1 MITIGATION MEASURES Based on the expected environmental impacts in the phase 2B, appropriate mitigation measures are identified and described for each of key project stages and types of impacts, including: Environmental contribution during Detailed Design, including general design considerations in LIAs, design of drainage and sewerage systems; WWTPs; Mitigation Measures during Construction, including specific mitigation measures during excavation and dredging activities; Mitigation Measures during Operation, including LIAs, drainage and sewerage systems, WWTPs Land acquisition and compensation Issues have been presented In details in the project Resettlement Action Plan. 125 EfA report ofDa Nang Priority Infrastructure Investment Project Phase 2B Table 7-1 S fmiti2af -.. . ------0------­ ~ ---------~- ENVIRONMENTAL RESPONSIBLE ACTIVITIES MITIGATION MEASURES BUDGET PERIOD IMPACTS AGENCIES COMPONENT A PRE-CONSTRUCTION PHASE -­ The PMU will compensate Clearance: IO,512.5m2 (DCSCC) District Compensation for affected households in Before residential land, 18 houses Counterpart compensation and site resettlement compliance with the State construction (fully) and 1 house (partly) clearance committee policy_ (Refer to RAP) CONSTRUCTION PHASE f-­ --­ Including in Before Clearance Dust caused clearance Dl, D2, D3, D4 Contractor contract construction Dust and air pollution from Contractor Construction excavation and transporting Dl, D2, D3, D4, D5, D6, D7 activities Air pollutant emission AI, A2, A3, A5 Contractor Noise and vibration Nl, N2, N3, N6, VI Contractor Domestic wastewater by During DWl,DW2 construction Contractor workers Runoff water RWl, RW2, RW3 Incl uding in phase Contractor Domestic solid waste by contract WWl Contractor workers Solid waste by construction W2, W5, W6 Contractor Hazardous waste 03 Contractor Traffic turbulence n, T2, T3, T7 Contractor Underground facilities PRl, PR2 Contractor Temporary Flooding F2,F3,F4 Contractor Risks of accidents HSI, HS7, HS9 Contractor OPERATION PHASE -­ 126 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B ENVIRONMENTAL RESPONSIBLE ACTIVITIES MITIGATION MEASURES BUDGET PERIOD IMPACTS AGENCIES Damage to roadsl alleys Combining Urban Environmental DRl, DR2 surface the city's Management Company Odor by sludge dredging ODI,OD2 budget and Operation Wastewater Wastewater discharged from beneficiaries' Connect to the existing system phase Management Company households contribution Domestic solid waste at Urban Environmental DS I, DS2, DS3 community houses Management Company COMPONENTB » SUB-COMPONENT B52, B53 PRE-CONSTRUCTION PHASE - Clearance: 12,403rn2 Compensation for Compensation, residential land, 35,900rn2 Before Compensation and resettlement (Refer to policies Counterpart resettlement agricultural land, 33 houses construction Clearance Board of resettlement action) (fully), 109 houses (partly) CONSTRUCTION PHASE Including in Before Clearance Dust caused clearance AI, A2, A3, A4 Contractor contract construction Dust and air pollution from AI, A2, A3, A4, AS, DI, D2, Construction excavation and transporting D3, D4, DS, T7, T8, RBI, T4, Contractor activities TS, W3, W4, WS, W6 Noise and vibration NI, N2, N3, N5, N6, N7, N8 Contractor During Check status of surrounding Including in construction houses with in 10m from contract phase construction site before Landslide construction Contractor Steel sheet must be installed to prevent slide with proper technique 127 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B - - ENVIRONMENTAL RESPONSIBLE ACTIVITIES MITIGATION MEASURES BUDGET PERIOD IMPACTS AGENCIES Domestic wastewater VVVVI, VVVV2, VVVV3 Contractor Contaminated run-off water VV2, PC 1, PC2 Contractor A4, VVI, VV2, VV3, VV4, VV5, Solid waste VV6, VV7, VV9, HSIO, HSll, Contractor I 01, GVV2 Local flooding Fl,F2,F3,VV3, VV6 Contractor I SEl, SE2, SE3, SE4, SE5, I SE6,SE7,SE8 Sludge dredging The sludge will be disposed Contractor with sludge of Phase I and Phase 2A in Khanh Son landfill. - Traffic disturbance n, T2, T3, T4, T5, T6, T7, Contractor T8, T9, VVBI, VVB2 Disturbance to other utility VI, V2, V3 Contractor services Affect to local business PI, P2 Contractor During HS 1, HS2, HS3, HS5, HS6, Including in Labor safety construction Contractor HS7, HS9, HSI0, HSll, HS14 contract phase AI, A2, A3, A4, AS, 01, 02, Embankment of Trung Nghia 03,04, D5, T7, T8, RBI, T4, Contractor lake TS, VV3, VV4, VV5, VV6 Nl, N2, N3, N5, N6, N7, N8 OPERATION PHASE Low household connection Establish a specialized team; During VVastewater Operation rate then build a program to City's budget operation Management Company _ ...... _­ ~anc~ the: awareness of the ~ phase -­ 128 EIA report ofDa Nang Priority b~frastructure Investment Project - Phase 2B ENVIRONMENTAL RESPONSIBLE ACTIVITIES MITIGATION MEASURES BUDGET PERIOD ~~. IMPACTS AGENCIES community Use mass media for public Wastewater awareness Management Company Wastewater Incentive policies Management Company Smell and leakage during SEl, SE2, SE3, SE4, SE5, Wastewater Sludge Dredging SE6, SE7, SE8 Management Company Noise and smell from SEl, SE2, SE3, SE4, SES, Wastewater pumping stations, CSOs and SE6, SE7, SE8 Management Company outlets SE I, SE2, SE3, SE4, SES, Wastewater Affect to public health SE6, SE7, SE8 J\.1anagement ComEan~ )i>: SUB-COMPONENTBS4, BS4a PRE-CONSTRUCTION PHASE Clearance: 228,643m2 The PMU will compensate Compensation and Compensation and agricultural land, 91,771m2 affected households in Before Counterpart Clearance Board of resettlement residential land, 268 houses compliance with the State construction District (fully), 260 (partly) p_olicy. (Refer to RAP) CONSTRUCTION PHASE Including in Before Clearance Dust caused clearance AI, A2, A3, A4 Contractor contract construction Dust and air pollution from AI, A2, A3, A4, AS, Dl, D2, Construction excavation and transporting D3, D4, D5, T7, T8, RBI, T4, During Including in activities T5, W3, W4, WS, W6 construction Contractor contract phase Noise and vibration Nl, N2, N3, N5, N6, N7, N8 Domestic wastewater by WW I, WW2, WW3 workers - 129 EfA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B -- -­ ENVIRONMENTAL RESPONSIBLE ACTIVITIES MITIGATION MEASURES BUDGET PERIOD -­ IMPACTS AGENCIES Runoff water W2, PCI, PC2 A4, WI, W2, W3, W4, W5, Domestic solid waste by W6, W7, W9, HSIO, HSll, workers OI,GW2 Local flooding Fl,F2,F3, W3, W6 TI, T2, T3, T4, T5, T6, T7, Traffic turbulence ----­ T8, T9, WBI, WB2 Disturbance to other utility Ul, U2, U3 services HS 1, HS2, HS3, HS5, HS6, Labor safety HS7, HS9, HSlO, HSll, HSl4 OPERATION PHASE i During Control the DO in aeration WWTP Operation Operation Odor from WWTPs City's budget operation tank Agency phase Control collecting and WWTP Operation removing system Agency Control pressure inside the WWTP Operation During odor pipe system Agency operation City's budget Control odor removal system phase WWTP Operation by biofilter and activated Agency carbon absorption Monitor air environmental WWTP Operation - quality, especially H2S Agency Install fence and plant trees WWTP Operation _, igside th~ WWfPs_ _ _ _ Agency 130 EfA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B ENVIRONMENTAL RESPONSIBLE ACTIVITIES MITIGATION MEASURES BUDGET PERIOD IMPACTS AGENCIES WWTP Operation Solid waste and sludge WI, W8, 8E4, 8E6 Agency Manage solid waste, sand and WWTP Operation garbage Agency Separate domestic waste and WWTP Operation Hazardous waste chemical waste Agency Training program for workers WWTP Operation for working safety issues Agency Chlorine must be stored in WWTP Operation sealed tanks put on a stain- Agency steel flat to avoid spillage. Materials with oils and grease WWTP Operation are collected and treated in Agency accordance with regulation ... Monitoring of water quality to Surface water quality evaluate the efficiency of the DONRE operation Ensure that the treated wastewater from Hoa Khanh During DONRE Industrial Zone always meets City'S the standard operation budget Labor safety and public Training and providing phase WWTP Operation health enough labor equipments Agency At least two workers working WWTP Operation in a shift during operation time Agency Training operation and WWTP Operation maintenance skill as well as Agency troubleshooting for workers -­ -­ -­ 131 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B -­ --­ ENVIRONMENTAL RESPONSIBLE ACTIVITIES MITIGATION MEASURES BUDGET PERIOD IMPACTS AGENCIES SUB-COMPONENTB55B ­ Pilot WWTP S01l Tra CONSTRUCTION PHASE - Improving trench Dust Dt, D2, D3, D4 During Contractor , Including in construction SEI, SE2, SE3, SE4, SE5, contract phase Dredging sludge Odor Contractor SE6, SE7, SE8 OPERATION PHASE I Monitoring wastewater quality ! at the outlet During Wastewater Pilot operation Monitoring odor (H2 S) City's budget operation Management Company Recording and comparison phase with status COMPONENT C. SOUTHERN LINK ROAD AND BRIDGE PRE-CONSTRUCTION PHASE - Clearance: 220,848m2 The PMU will compensate COMPENSATION Compensation and agricultural land, 32,463m2 affected households in Before AND CLEARANCE Counterpart resettlement residential land, 31 houses compliance with the State construction BOARD (fully), 21 (partly) policy_ (Refer to RAP) CONSTRUCTION PHASE Using measures such as removing unsuitable soil, sand Erosion filled pillars, and geotechnical Contractor fabric or staged construction During Leveling Including in to stabilize the soil. construction contract phase - Affect the regional drainage Fl,F2,F3, W3, W6 Contractor -­ 132 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B - - - ENVIRONMENTAL RESPONSIBLE ACTIVITIES MITIGATION MEASURES BUDGET PERIOD IMPACTS AGENCIES - Affect the air quality due to AI, A2, A3, A4, A5, DI, D2, dust emissions during the D3, D4, D5, I7, I8, RBI, I4, Contractor filling process I5, VV3, VV4, VV5, VV6 - Locate the Concrete/asphalts mixing plant 300m far from Concrete mixing plant - Affect the air environment residential areas Contractor - Having enough labor equipment for workers - Reinforce the construction area to limit erosion - Collecting and managing Bridge construction - VVater environment, aquatic carefully waste from drilling Contractor activities life piles - Collecting and disposal hazardous waste VVVVI, VVVV2, VVVV3, A4, VVI, VV2, VV3, VV4, VV5, VV6, VV7, - Affect the environment due Labor mobilization VV9, HSlO, HSll, 01, GVV2 Contractor to workers' waste Septic tank, BASIAF with 5,66m3 volume -Mobilized VVorker must be registered with local authorities, local police -Social activities Contractor - Educating worker about respecting local culture and customs - Check carefully for geology Drilling piles, installing - Check Coppha, safe brace -Accidents Contractor bridge pans before pouring concrete - Do not construct on rainy 133 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B ~. ENVIRONMENTAL RESPONSIBLE ACTIVITIES MITIGATION MEASURES BUDGET PERIOD _. IMPACTS AGENCIES and windy days - Having net cover construction at height of 3m for working - Worker are equipped enough labor protection during working - Electrical equipment, switchboards must be arranged carefully. - Workers compliance on occupational safety - Supplying enough equipment and first aid skills for health workers at the site OPERATION PHASE Water road surface to reduce Transportation Traffic activities - Air pollution dust Department !---. Monitoring air environmental During DONRE quality frequency City's operation Cleaning and collecting budget Urban Environmental phase garbage on roads Management Company Install sign boards, signals at Traffic safety the junctions, intersections, Traffic police round comers Da Nang City Power Operating light system Company L... 134 EIA report ofDa Nang Priority Infrastructure Investment Project Phase 2B - ENVIRONMENTAL RESPONSIBLE ACTIVITIES MITIGATION MEASURES BUDGET PERIOD I IMPACTS AGENCIES Transportation Suitable speed regulation Department Managing solid waste from Urban Environmental Solid waste management small business along the roads Management Company Managing solid waste from Urban Environmental maintenance process such as asphalts cases, paint cases ... Management Company I Dredged sludge from sewer Wastewater system Management ComEani: Prohibiting land invasion of Transportation Noise and vibration road corridors for trade Department Monitoring frequency and Transportation checking noise of traffic Department vehicles During City's Installing sign boards to operation budget control vehicle's speed, not to phase Transportation hom after 21.00 in residential Department areas Planting trees to reduce noise Urban Environmental and vibration for residential Management Company areas 135 ElA report ofDa Nang Priority Infrastructure Investment Project Phase 2B 7.2 INSTITUTIONAL ARRANGEMENT 7.2.1 Construction phase Da nang transportation DEP. .............................. Related departments and organisations l PIIP-PMU 1 Environmental Management .... _-""1 -..... General control local Public services government companies (water supply ....············.. and drainage companies, I CMC Public --------~~-------- representative ISMC • Responsibility .......................................... Cooperation Figure 7-1 EMS in the constroction phase Responsibilities of stakeholders in EMS are presented in Table 7-2. 136 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B - Table 72 Responsl'bT' 0 f stak eh 0 Iders In EMS I lties . No. Organisation Responsibility 1 PMU - The main responsibility ofthe implementation of EMP. - Control and minimize environmental impacts - Designate qualified members as their environmental staff and environmental supervisors - Coordinate with other organizations in the implementation ofEMP 0 Work closely with the Districts' and Wards' Environmental Officials in the management, operation and monitoring of the project. 0 Maintain close cooperation with the relevant enterprises in charge of water supply, sanitation, solid waste collection, etc. to monitor the O&M during the operation of the project. - Supervise the implementation of mitigation measures by the contractors. 0 Monitor the project performance indicators related to environmental issues; 0 Carry out spot-checks to ensure that the contractors are implementing mitigation measures as specified in the construction contracts; 0 Review regular reports by the CMC to ensure the compliance of mitigation measures; 0 Review reports by the ISMC on overall environmental impacts of the sub-projects; Based on the above reports, report to WB and DONRE on environmental compliance of the sub-projects as part of their bi­ annually progress reporting. In order to get the best performance, PMU should have a specialized group responsible for environmental management (EM­ PMU) 2 Construction Actively construct a plan for mitigation measures based on the EIA Contractors and working schedule of contractors Ensure all the construction activities having sufficient documents from the related organization Implement all the mitigation measures to prevent adverse impacts and protect the environment. Ensure that all staff and workers understand the procedure and their tasks in the environmental management program fo­ Report to the PMU about difficulties and their solutions Report to stakeholders as having environmental accidents and coordinate to resolve these issues 137 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B 3 Construction Monitoring the process and procedure of basic constructions, Management technological standards and construction rate of contractors Consultants Monitoring the implementation of mitigation measures of contractors. This task must be clearly regulated in the contract between CMC and PMU 5 ISMC Independent from the contractors and CMC, having specialists in environmental management and under the management of PMU. Supporting PMU to establish and operate the EMS Supporting PMU to establish periodical report on environmental management in the project implementation to hand over to supporters and DONRE Directly coordinate with stakeholders to resolve the problems f- Providing recommendations and raising capacities for stakeholders in the operation and monitoring of the environmental management in the construction phase of contractors 6 DONRE Playing the key role in public environmental management, DONRE is responsible for receiving and investigating the environmental monitoring reports from PMU When there are problems, DONRE will participate directly into research and resolve the related problems and reduce the loss. 8 Environmental Monitoring and fining the illegal activities Police Coordinating with stakeholders to investigate and resolve environmental risks 10 Related Coordinating with PMU and contractors to move the submerged organisations construction and connect temporarily at the cross sections in order to avoid a break-down in public services Managing the invisible cultural heritage Participating in solving environmental problems 7.2.2 Operation phase When the construction is completed, they will be transferred to the operational units such as Da Nang Transportation Department, Urban Drainage Company, URENCO and/or local government. These organisations will be responsible for management, operation and maintenance of the constructions in accordance with the current regulations 7.3 ENVIROMENTAL MONITORING PROGRAM The environmental monitoring program is proposed in the construction phase at four levels: Monitoring of the project performance indicators: twice a year, PMU is responsible for reporting to WB: health indicators; water quality at the receiving water bodies; flooding; Monitoring of implementation of mitigation measures done by the contractors: it is done by ISMC and the efficiency of implementing EMS of stakeholders and militating measures of constructors is reported to PMU and approved by PMU and WB with frequency of 3 months/time 138 EIA report ofDa Nang Priori~y Infrastructure Investment Project - Phase 2B Monitoring by pUblic: public will monitor the project along its process to ensure that the contractors will not break the environmental and social regulations, and to reduce the health risks. Community will monitor the project throughout the implementation process, to ensure contractors do not violate the principles of environmental safety by providing information and help to fill in assessment of the Contractors Mitigation Measures, contributing to the work of a good environmental management. Implement monitoring community forms the spirit of voluntary reporting and address urgent matters. When an environmental deterioration happens, people and local administration will report to stakeholders. General monitoring of the project: regularly done by the related organizations and these reports will be collected and submitted to DONRE. T able 7-3 Samplrmg posItlOns and num ber 0 f sample A. CONSTRUCTIONPHASE I. Air polution Sampling positions ( refered to baseline data in appendix 4) . Component A 01 sample for each LIA at construction site (09 samples) . Component B Sub-ComponentB52,b53 03 Samples in drain culvert box construction site (positions refer to baseline data) Sub - component B54, B55a 02 Samples for each WWTP (04 samples) . Component C 03 samples at the construction in the residential areas i Parameters Total dust, noise, N02, S02, CO Prequency 03 months or when requested by residents Standards QCVN 05-2009 to dust and pollutants, QCVN 26: 20I 0 for noise and baseline data Total samples 18 samples/ a monitoring trip IL Surface water ComponentC 02 samples (Co Co river and Cai River at positions of Co Co and Hoa Phuoc bridge across. Parameter pH, DO, TSS, COD, Nt, Pt and Colilform Prequency 03months . Standards QCVN 08 column B2 total samples 02 samples/a monitoring trip B. OPERATION PHASE L Air pollutant Sub-component B54, B55a 02 samples for each WWTP (one in the plant, one nearest i residental area) I I Parameter H 1S Frequency 06 months Standard QCVN 06: 20081 BTNMT IL Surface water Component A 01 samples for three outlets (03 samples) Sub- component B54, 02 samples foreacb WWTP (06 samples) . B55a,55b Component C (bridges) 01 sample at each river (02 samples) Total samples 09 samples i Parameter pH, DO, TSS, COD, NH4+, N02-, N03-,Fe Pt and 139 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B Co lil form i Frequency 06 months after finishing construction Standard QCVN 08: 2008/BTNMT III. Ground water Component A 01 sample for each LIA (09 samples) I Component B (Suh-B54, . B55a) 02 samples for each WWTP Total 11 samples Parameters COD, pH, TSS, Colilorm E-Coli, Mg, Fe, CI Yearly ! I Frequency Standard QCVN 09: 2008/BTNMT Map location monitoring environmental quality in the operation phase is shown in Appendix 4. 7.4 CAPACITY BUILDING The training for environmental monitoring will be executed with different groups, based on the different requirements: PMU: PMU staff that is responsible for environmental issues will be trained to check the monitoring and prepare reports for DONRE and WB. Contractors: will be trained to monitor the implementation of mitigation measures and write the monitoring reports Community: community representatives will be trained for observing and monitoring at construction sites during the phases of construction and operation and how to fill in the form of CEMP (community environment monitoring program). The parameters concerned are as dust, noise, traffic, hygienic levels on city road. - Table 74 Capaclty B UI' ld' g program {;o r the operatIOn 0 fEMP m Contents Participants Number Time Trainers Budget Lahor safety Workers and All workers Before Constructors Constructors and technical staff of and technical construction in environmental constructors staff working and comply cooperation sanitation at with the with construction current DOLISA site regulations and laws EMS PMU's 5 Before PMUin ISMC environmental construction cooperation staff with ISMC CEMP Ward/commune's 1-3 per ward Before ISMC Included in monitoring boards construction the contract in the project areas SEMP Constructive and 5 10 Before PMUin Included in environmental construction cooperation the contract staff ofCMC with ISMC 140 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 28 7.5 ENVIRONMENTAL MANAGEMENT EXPENDITURE Summary budget proposal for the environmental management, carrying out the mitigation measures and environmental monitoring is displayed at table 6-4, of which budget proposal for the main activities: • Implementing mitigation measures • Independently environmental safety monitoring consultants (ISMC) • Construction monitoring consultants (CMC) • Administrative management for carrying out EMP of PMU . Table 7­5 Esimaf Ion 0 fb ud t fio r ImpJemenf mg EMP f Ige Description Budget proposal Fund sources 1 Pre ­ construction phase Counterpart 2 Construction phase 2.1 Implementing mitigation Included in the contract counterpart measures 2.2 ISMC for five times Loans including testing the related environmental indicator 2.2.1 Surface Water quality 12 samples *1,000,000 = 12.000,000 2.2.2 Air quality 98 samples * 1,000,000 = 98,000,000 2.2.3 For ISMC 700,000,000 3 ForCMC Included in the contract 4 Management and Included in operating fund ofPMU Counterpart administration for budget implementing EMP of PMU 5 Capacity building for 80,000,000 Loans related stakeholders: CMC, Contractors, PMU environmental staff and CEMP I Total 880,000,000 VND !3 Operation phase for one year . Counterpart 3.1 Air quality 06 samples * 60.000 = 360.000 3.2 Surface water 11 samples * 1000000 = 11,000,000 3.3 Ground water • 26samples * 1000 000 = 26,000,000 3.4 I Monitoring unit 30,000,000 I Total 67.360.000 VND Notes: the above cost IS excluded VA T. Inflation and spare expenses and the budget is counted for 05 times ofmonitoring, 141 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B CHAPTER 8. PUBLIC CONSULTATIONS AND DISCLOSURE 8.1 PUBLIC CONSULTATION In compliance with the safety and social environment policy of the World Bank for Project Category A on the level of environmental sensitivity, the community consultation is carried out in 2 periods. Period 1: the Consultants carried out consultation meetings with 09 households in the LIAs on 15 - 18/09/2010 and households living in the areas of the Southern Link Road, Lien Chieu and Hoa Xuan WWTPs, and the extension culvert route on 02 - 05/1112010. The method of consultation and interview of households is questionnaire (Appendix 8.1). Locations, time and number of interviews are presented in Table 8-1 and consultation results are summarized in Table 8-2. Table 8-1 Locations, time and number of interviews in Period 1 Period 1 No. of No. commune/w.ards Locations interviewed Date householders (hhs) Tho Quang LIA 16/09/2010 10 hhs Tho Quang, Son 1 Waste water collecting lines at Tra district 02/1112010 18 hhs Nguyen Phan Vinh-Tho Quang An Hai Bac, Son 2 An Hai Bac LIA 16/09/2010 10 hhs Tra district An Hai Dong, 3 An Hai Dong LIA 16/09/2010 03 hhs Son Tra Binh Hien, Hai 4 Binh Hien LIA 17/09/2010 08 hhs . Chau Dist. Binh Thuan, Hai 5 Binh Thuan LIA 17/0912010 10 hhs Chau Hoa Cuong Bac, 6 No.2 Nguyen Tri Phuong LIA 16/0912010 16 hhs Hai Chau Tam Thuan, 7 LIA Tam Thuan 15/09/2010 10 hhs Thanh Khe Hoa Tho Dong, 8 Hoa Tho Dong LIA 15/09/2010 05 hhs Lien Chieu dist. Hoa Hiep Bac, 9 ThuyTu 15/09/2010 26hhs Lien Chieu dist. Hoa Khanh Bac, Lien Chieu WWTP, sub - ward 10 05/11/2010 5 hhs Lien Chieu No.61 Hong Phuoc Hoa Lien Lien Chieu WWTP, sub-ward 11 commune, Hoa 0511112010 7 hhs No.1 0 Yang dist. 12 Hoa Xuan, Cam Hoa Xuan WWTP, Co Man 04111/2010 8 hhs 142 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 28 Period 1 No. of No. communelwards Locations interviewed Date householders I (hhs) Le dist. village Hoa Quy, Ngu 13 02/1112010 30hhs Hanh Son dist. Hoa Hai, Ngu I 14 Hanh Son dist Da Nang Southern Link Road 0211112010 29 hhs Hoa Phuoc 15 commune, Hoa 04/1112010 18 hhs Vang dist. I Bang 8-2 Consu tabon results in Period I Discussed Tbe reviews bavebeenupdatedin the EIA Consultants' issues solution Project - 66% has information on Project PIIP - DN 2B PMU should enhance information mainly about the project scale, goals and issues information to people related to the compensation and relocation. in the project area - 34% does not know about the project because they did not attend the dissemination meeting organized by the ward 1 commune PC combined with popUlation group leaders General People living in the LIA said: Currently in LIA, the information public garbage about the - The environment is polluted and odor from collection system project open channels escape in addition to frequent flooding works well. The environment because of the damaged drainage system change of garbage - Most people use 2 compartment septic tanks transit model or trash - 47% drink drilled well water, 53% use tap installation is not water necessary. - Waste is collected thorou~hly Negative - 29.6% is worry about the compensation and The Design environmental resettlement that will affect the employment, at the Consultant should impacts same time 71.4% said the project preparation stage study carefully the has not significantly impact (Hoa Xuan, Hoa Quy, location of the Hoa Phuoc and Hoa Khanh Bac). horizontal culverts for - Residents in group 15 - Khai Tay 2 Village flood control in Khai think that the southern link road will prevent flooding Tay 2 when designing if the drainage is not placed accordingly. South link road (The - In the construction phase, there will be effects Environmental of dust, noise, housing vibration and insanitation Consultants included (opinion of people along Le Tan Trung road). in the report). - In the operational phase, people recommend 143 EIA report ofDa Nang Priority Infrastructure Investment Project Phase 2B I Discussed The reviews have been updated in the EIA Con~ultants' issues .. solution that PMU should manage the waste and waste water better. Measures to minimize house cracking when there is the construction of box culverts 3.5m deep along Le Tan Trung road (the Environmental Consultants included in the report). Protect the - People recommend measures to reduce dust, Have design and environment noise and environmental hygiene as follows: technical solution to during the - The Contractors notify construction plans for limit smell in the construction people early; buffer zone to meet phase - The Contractors have reasonable construction QCVN 07: measures to minimize road erosion and houses and 2010/BXD (the arrange traffic signs, lights at night; Environmental - Deodorize smell from Xuan Hoa and Lien Consultants included Chieu WWTPs. in the report) Other - Set up hotline to provide full information to - Build a community­ environment citizens about the project; based environment management - Implement administrative fine to Contractors monitoring system; issues which cause environmental pollution; - The Contractors must undertake to compensate - The Contractors sidewalks, houses damaged by the construction; must strictly follow - People support the project and think improving the proposed environmental awareness to people is necessary. mitigation measures The consultation results of Period I of the Consultant are updated in the report. Period 2: The Community Consultation Period 2 was conducted from 02/1112010 - 16/1212010 in the form of community meetings for 15 project wards. The process is organized as follows: The Consultants prepare a draft summary of the environmental impact report and sent dispatches to the ward people's committees in where there are project affected households_ The ward people's committees sent dispatches to affected households and invited them to attend meetings with the Environmental and RAP Consultants to discuss environmental issues related to the Project. The plan and implementation results are summarized in Table 8-3 and the minutes of meeting is presented in Appendix 8-2. 144 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B Table 8-3 Results of Public Consultation Period 2 Consultation Period 02 Consultants' solutions I No. Commune I Ward Date Number of participants People's feedback - On-site waste Request the Contractors management to supplement regular garbage collection Tho Quang ­ (noted in the mitigation 10112/2010 18 hhs measures and EMP) Son Tra 1 An Hai Bac Small alleys, fire Propose to build 2 11112/2010 42 hhs - Son Tra trucks may not hydrants and train penetrate people to use them AnHai effectively when 3 Dong - Son 11112/2010 16hhs incidents occur Tra Binh Hien­ Connection Give warnings that need 4 13112/2010 11 hhs Hai Chau to be monitored Limit impacts of The Contractors must dust and insanitation have reasonable Binh Thuan 5 14112/2010 12hhs construction plan and - Hai Chau mitigation measures outlined in EMP Dust, noise, traffic The Contractors HoaCuong congestion implement mitigation 6 Bac - Hai 13112/2010 IS hhs measures stated in the Chau EMP Muddy roads caused Carry out construction Tam Thuan­ by digging section by section and 15/12/2010 14 hhs ThanhKhe management solid 7 waste There IS flooding Construction does not Hoa Tho when it heavily rains damage or block the 8 Dong - Lien 15112/2010 20 hhs existing drainage Chieu system Avoid damages to Limit vibration when around homes compact road Hoa Hiep embankment and do not 9 Bac - Lien 16/12/2010 IS hhs mobilize large vehicles Chieu when carrying out construction in alleys HoaQuy­ 02/11/2010 Flooding m the Connect the tertiary 10 27 hhs NguHanh operation phase drainage system with 145 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B Consultation Period 02 Consultants' solutions Commune I No. Number of People's feedback Ward Date participants Son primary and secondary drainage system Traffic affection The Contractors must Hoa Hai­ sign up for transporting 11 NguHanh 2/1112010 21 hhs materials for the Son construction of the Southern Link Road Living activities of Request the Contractors HoaPhuoc ­ workers will cause to remind their workers 12 4/1112010 21 hhs Hoa Vang affects to respect local cultural practices The Contractors must sign up for transporting Hoa Lien­ 13 05/1112010 7hhs Traffic affection materials for the Hoa Vang construction of the i Southern Link Road People are HoaKhanh concerned about The operators must 14 Bac - Lien 0511112010 11 hhs smell from the strictly implement the Chieu WWTP mitigation measures HoaXuan ­ Residents concerned outlined in EMP 15 04/11/2010 12hhs CamLe about local flooding ~ Interview local authorities After completion of the initial EIA report with the impact of the project and the mitigation measures, the PMU sent the Document No.228/CV.BQLDNCDT dated on 30 March 2011 about receiving comments from community for EIA Investment Project Da Nang priority infrastructure phase 2B. All 15 wards had been consulted and had 12 wards sent their feedback. Detail feedbacks can be summarized as follows: - Agree the project to be implemented quickly. - Highly agree with measures to minimize negative impacts on the environment of PMU who will apply as stated in the report. - The compensation and clearance must be carried out quickly, apply policies fairly, satisfactory. In addition, investors should have a specific plan to arrange resettlement for white households are cleared. - Implement construction schedule on time, to minimize the impact of local people, traffic safety and security in the construction area. During construction time, should have a reasonable plan to avoid damaging the public works. - Contractor should avoid transportation of construction materials in the peak hours, especially going through populated areas to limit the accident may occur. 146 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B - After completion of the project, the Project Manager should remind the contractor to reinstate, to avoid causing aesthetic and environmental pollution. - WWTP should be mitigation measures to handle odor emissions. - WWTP should be monitored the quality of wastewater outlet periodically to control and limit surface water environmental pollution. - WWTP Lien Chieu needs to build a seperated pipe line to discharge to water body, not combined with the pipe line of the Hoa Khanh industrial zone, to limit the deterioration of responsibility for each other when the WWTP Lien Chieu or WWTP of Hoa Khanh industrial zone operate ineffectively. In addition, WWTP Lien Chieu regularly measured wastewater quality at the outlet to ensure efficient operation. - Recommend investor needs to closely coordinate with relevant agencies to implement the project as the schedule and good quality and compliance measures to minimize the negative impacts during construction and operation phases of the project. All comments above were included in Chapter 6 of the report and the project owner will be strictly implemented. The written response is shown in Appendix 8-4 8.2 DISCLOSURE • The Vietnamese summary report on environmental impact will be publicized to the project affected wards. • The complete Vietnamese environmental impact report will be publicized to Danang People's Committee. • The complete English environmental impact report will be publicized at the World Bank office at 63 Ly Thai To, Hanoi, Vietnam. • The complete English environmental impact report and English summary report which are being prepared will be open in OneStopshop in Washington DC. 147 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B CHAPTER 9: CONCLUSIONS, RECOMMENDATIONS AND COMMITMENTS 9.1 CONCLUSIONS DN-PIIP- Phase 28 that has three component of A, 8 and C invested will significantly contribute to promoting the economic - social development and sustainable poverty reduction throughout the physical and social infrastructure investment and upgrading in low-income areas as well as the environmental management and infrastructural development in the south of the city. After being complete, Component A will update 20,076m long of roads, 15,873m long of street lighting, 36km of water-supply pipelines, 03 kindergartens and 07 community houses, serving 6,691 households in 09 LIAs. The investment is essential as it not only results in the urban and sanitation improvement but contributes to improving the lives of poor people, giving them a chance to catch up with the pace of the City's development. Completed Subcomponents: B52, 853 will upgrade and extend more than 13km long of box culverts and 10km long of pressure culverts, draining wastewater across three districts of Son Tra, Ngu Hanh Son and Lien Chieu where there is not the investment and improvement in the wastewater and storm-water drainage. The investment will heLp promote the environment improvement significantly in new residential areas and help connect with the existing systems seamlessly, bringing all wastewater to the existing WWTPs. Besides, the investment of 922.63m embankment of northern Trung Nghia Lake and the surrounding landscape of the lake will contribute to the storage of 162,366 m3 rainwater, thoroughly addressing the flooding problem in the region. At the same time, it helps condition the air and landscape 36,900m2 of the central park of the City which is potentially untapped. Although the investment is not much, it brings lots of practical results. The investment in Subcomponents: B54, B55a is the major strategy of the City's long-term wastewater management. There are two newly constructed Hoa Xuan WWTP and Lien Chieu WWTP. The design capacity of each plant is 320,000 m 3/day with eight processing modules and each module has a capacity of 40,000 m 3/day. In the first phase, the project is implemented only a half of the design module with 20.000 m 3/day. However, the construction area must be fully prepared to expand the WWTP to meet its full capacity. Hoa Xuan WWTP situated in an area of 22.0414ha of Hoa Xuan ward - Cam Le district following Decision No.7919/QD-UNBD dated 15/10/2010 of Da Nang City People's Committee is planned treating the regional wastewater and receiving wastewater from Hoa Cuong and Ngu Hanh Son plants. Lien Chieu WWTP located in an area of 10 hectares of Lien Chieu district is planned treating wastewater in the Northern region of the City following Decision No.8500/QD-UNBD dated \1105/2010 of Da Nang City People's Committee. It will serve the wastewater treatment in the project area and receive wastewater from Phu Loc Treatment Plant in the coming time. The strengths and weaknesses of the locations and process technologies of the wastewater treatment plants are presented in Chapter 2. The following is the basic summary: 148 EIA report ofDa Nang Priority Infrastructure Investment Project - Phase 2B Selection of locations Table 9-1 Weakness and Strength for selection of locations Strengths Weaknesses - Because the geographical location of the plant is on As the buffer zone adjacent to low-lying areas, it can receive more gravitational the northern residential area of wastewater; Cam Le river is less than Due to the poor ecosystem and less land-use value, this 210m, TCVN 7222: 2002 is conversion of land-use purpose will become more not applied. Instead, QCVN efficient; 07/20101BXD, which allows Due to sparse population, negative impacts will be few 40m of buffer zone distance and can be minimized; provided that there are close Located near large rivers of Tu Cau and Vinh Dien treatments of drying sludge branch, which have high water-flows from 67.37m 3/s in and smell deodozization dry seasons and mainly serve for the water transport, before waste is discharged into the plant IS considered capable of receiving the the atmosphere, is applied. designed wastewater after the safe treatment; However, this would lead to It is able to extend and receive wastewater from Hoa the increase of investment and Cuong and Ngu Hanh Son Wastewater Treatment operation costs. Plants favorably; It can be applied QCVN - The agricultural land has low productive value, poor 07:2010/BXD for the buffer natural ecosystems and sparse population. Besides, the zone of 40m wide next to Hoa plant can directly discharge into Cu De river (with the Khanh residential area but the flow of 20m3/s in dry seasons), which is capable of investment and operation costs receiving wastewater after treatment. The geographical will increase. In addition, the location and distance can be expanded and accepts Plant's discharge point is on wastewater from Phu Loc favorably. the discharge downstream of Hoa Khanh Industrial Zone. Thus the resonant pollution in discharging area maybe difficult to control but reducible. In brief: the selected locations for two Hoa Xuan WWTP and Lien Chieu WWTP are reasonable for the City's Waste Management Strategy to 2040, whose small and negative impacts can be minimized. Treatment technologies: The selected technologies are analyzed as consistent with the locations, size, climatic conditions and human resources of Da Nang city. Secondary Processing Technology: Extending Aeration Oxidation Ditch. Its advantage is the ability of oxygen transfer of 2.0SkglkWh, much more efficient than other 149 EIA report ofDa Nang Priority Infrastnlcture Investment Project - Phase 2B technologies. This leads to a high effective treatment of waste, less sludge, good siltation and low smell. Odor Deodozization Technology by Biological Filtration is optimal because it can reduce 99% H2S, has low costs and has no by-products affecting the environment. The Chlorine Gas Disinfection Technology is appropriate because of its spectrum disinfectant, popularity and low costs. Besides, it also contains a number of disadvantages such as its residual chlorine in water may cause negative impacts on the environment, the corrosion of equipment and human health but these factors can be minimized. In addition, fine sludge will be proposed for treatment and disinfection and can be used as a source of organic fertilizer to help reduce the overload of Khanh Son landfill in the future. Component C will build for the City an asphaltic road of 34m wide and 7,279km long, which starts from National Highway lA in Hoa Phuoc - Hoa Yang region through Hoa Quy Ngu Hanh Son rice field and ends at Son Tra - Dien Ngoc intersection of Son Tra district. The alignment will limit negative impacts and does not break the City'S Urban Transport Planning provided in Decision No.7922/QD-UBND dated 14/0112006 by the City People's Committee. On the way, there are two bridges crossing Vinh Dien River with the length of 420.8m and 10 spans, which are large enough for the navigation clearance of the grade-4 River, and Co Co Bridge crossing Co Co River with the length of 80m and 2 spans, which has no boat navigation. The completed southern road will create economic-social development opportunities for the south of the City which is potentially untapped. Also, people living in Hoa Quy - Ngu Hanh Son district and Hoa Phuoc - Hoa Yang district have chance to access the urban education and healthcare infrastructures and take opportunities to improve their incomes by means of trading with the external. The central population density, whereby, reduces thank to the emigrants who are looking for development opportunities in new urban areas. Besides the aforesaid positive effects, the process of building and operating the Project does not avoid certain environmental negative impacts at various degrees (as reviewed in Chapter 5). However, most the impacts are small and medium and can be minimized at acceptable levels by highly feasible mitigation measures (mentioned in Chapter 6). These are also summarized in Table 7-1. Thank to the advantages of the invested components, limitable negative impacts, proposed reasonable mitigation measures, and the support, supervision and management of Dang Nang City, PIIP-PMU and city authorities (mentioned in Chapter 7), the Project certainly succeeds, brings benefits, is practical for the people and contributes to the sustainable poverty reduction and socioeconomic development of the City. 9.2 RECOMMENDATION Functional agencies are requested to provide support so that the project can be soon started. Local environmental management agency is requested to supervise the project implementation for ensuring technical parameters and monitor environmental parameters during project execution. Relevant agencies should closely coordinate together during pre-construction and construction stages to ensure the project schedule and progress because the project area may be affected by storms in rainy season. 150 EIA report ofDa Nang Priority Infrastrocture Investment Project - Phase 2B 9.3 COMMITMENTS Da Nang Department of Transportation - the Project Owner pledged that: 1. EIA report will be in accordance with current environmental regulations and standards of Vietnam as well as environmental safeguard policies of World Bank. 2. After obtaining approval for EIA report, we will implement environmental protection alternative following contents mentioned in the approved EIA report. 3. Our project will not use any chemical substances which are named in the list of prohibition of Vietnamese State and in international convention in which Vietnam involved. We pledged to take full responsibility to laws of Vietnam for any mistakes. 151 APPENDIX LIST OF APPENDIX Appendix 1-1 EIA Methodology Appendix 1-2 EIA Consultant team Appendix 2-1 Details of investment in LIAs Appendix 3-1 Alternative for LIAs Appendix 3-2 Decision on land recovery for WWTP Hoa Xuan-1 Appendix 3-3 Decision on land recovery for WWTP Lien Chi~u Appendix 3-4 Decision on land recorery for the Southern Link Road Appendix 4 Environmental monitoring for baseline data Appendix 4-1 Analysis results of air quality Appendix 4-2 Quality of surface water Appendix 4-3 Quality of ground water Appendix 4-4 The analysis result sheets Appendix 5-1 Excavated materials Appendix 5-2 Vinh Dien River flow - CDM-LO-0736 Appendix 6- 1 Environmental Code Of Practice (ECOP) Appendix 6-2 Susgestion for effective management of sludge usage Appendix 6-3 Typical mobile toilets Questionnaire 8-1 and 8-2 Appendix 8-3 List of interviewed household for the project Appendix 8-4 Minute meeting of consultants, local authorities and community EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B- - - - - - - ... __ .. _­ Appendix 1-1 EIA Methodology Step I Objectives Scope of work Methodology 1 - Research of Collect and evaluate - Research standards -Table research. D,ita available information about and appropriate sources used in thi s documents and the project: regulations related to step is secondary determine the environmental quality, data provided by the data - The components, land use, including the following agencies requirements - Technical vulnerable position • PMU; documentation, and protect the • Department of locations, content historic, cultural, land Natural Resourc es and progress of use controL and Environmen project Study the existing of Danang city implementation; documentation on the • Water supply an d - Information on project and drainage agency natural conditions environmental • URENCO and regional conditions, the area projects; affected by the - Information on project. current - Collecting, filtering environmental, and aggregating the economic and environment data and social conditions; the lack of data needed to cater to the report. - Planning for field surveys and Vb:>CI yadon. 2- Site visit - Survey and - Conducting field Use the following understanding surveys, observations methods: the construction and collect - Field survey; sites of the information - Methods of project; - Implementation of identification; - Supplement, monitoring and - Methods of verify and edit collecting and assessment; information in evaluating results; Data: Primary data step 1; - Comparison with the sources, measured - Collect standards and directly. Reliability of information and international standards data sources will be missing data; to assess the adequately assessed i n environmental status the ErA report and forecast trends and analyze changes cause the abnormalities of environmental quality 3- Study the - Summary of - Synthesize and Table research. This components construction summarise step must be done plans to list the construction plans for with close cooperatio n actions and I each component, • with the consultan~:( 1 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B - - - - - together with its ~fit design, I assess their impacts on the specific detailed construction and environment; design project management boards; I 4­ - Determine the - Methods of Environmental potential impacts of identification; impact pre-construction, - Method of rapid assessment construction and assessment; operation phase; - Check-list - Quantify the approach; environmental - Matrix method; impacts. - Modeling; - Determine the impOltance and acceptable level of impacts. - Evaluate issues of potential environmental risks. - Identify and estimate the extent and quality of existing data, its discrepancies and original data, and specify the I insignificant issues 5- Propose - Propose measures - Table research; mitigation necessary for - Modeling; measures mitigation of negative - Method of effects and effective forecasting; measures to - Method of expert strengthen the positive opinion; impacts - Method of map - Forecast the overlapping; remaining impacts and estimate the extent of damage; - Establish a preliminary content (impacts, mitigations) and conduct consultations, gathering the opinions of the People's Committee of Ward I I social sectors. - .--­ 6- Construct Serving for the - The construction of - Table research, in EPM control and EPM should pay consultation with implementation of attention to four stakeholders such 2 EIA ,-r'rJrllnJ nrrr(,rSlrllClllre Investment - Phase 2lJ construction works aspects: (i) measures as Department of according to to mitigate Natural Resources requirements and environmental and Environment environmental impacts, (ii) of Danang city, regulations of the monitoring plan / PMU and World World Bank and the environmental Bank; Government of monitoring (iii) Vietnam. capacity building plan, and (iv) supervision of the implementation of EMP. 7 - Public - Identify priority - The environmental - Interview; consultation and environmental consultant will assist - Questionnaire; information issues PMU for consultation dissemination - Set priorities for and dissemination of environmental information to at1ected impacts, in terms people for the contents of community'S of such reports and EPM awareness. - Consultation comments - Identify the from local authorities, community'S views affected people and on appropriate groups. measures to • Scope of the project minimize impacts and potential of the project; environmental impacts; • The mitigation measures proposed • Mechanisms for managing and supervising the implementation. 8- ReE0rt writing - 9. Presentation of the EIA .~.- -- 3 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Appendix 1-2 EIA Consultant team Full name -T---P~~f~;;i~;--r-- Positions I j --:--."."---­ f-L-e-A-n-h-D-uC-----rMA.E~~~;on'm~'flt·""(i5ep~ty Director of Envir()nl~~nt' PMU ofPIIP - ON 1 - - - - - - - - - - - + '______,_"__ jJ?eRt:.,,,_~"_,_" __-_- _ _ .,_.______ ~,.,--_ Nguyen Thanh Hoang Environment ) Environment Expert I---_ _ _ _ _ _ _ _ _-+__ E_n""'g_in_e~er __ ~",__ __. ._l---.,----.'"'___ _. __,..," _______ ,_.~ +--__,________---; DangHuu Luu PhD_ History I Team Leader/Social and Infra TL JSC. 1---__________ +__________ I Resettlem_e!l!.§.R~EJ~,~~~ _____ _ Vu Duy Hai BA. Sociology l Sociology Assistant/Researcher Nguyen Xuan Nhan BA. Sociology I Socialistic Analysis Team f-_ _-----c-:-_ _ _ _+ ___--:-_____l-L_e_ad_e_r_-_S_o_c,..;ia~~tic Sp~£Lali~_ Duong Dinh Dung MSc. Environment Environmental Analysis Team 1 - - - - - - - - - - - - + - - - - - - - - , - , - - LLead~~EI~3>_pec_i_al_is_t_____1 Vo Thi Phuong Tram I MSc. Environmental I EIA senior specialist f---_..,.-,----:-'"_ _ _ _ ,---!-m~~~_~l!~'.~t_________ .__ j_-_-_ .. -_----- _ Le Thi Kim Phuong I Environment 1 EJA Specialist nan Gi. Phue --fis7~:'~i;~;;';;~~i~i-rETA Speeia! is! Techniques ! Phan Dinh Xuan V i nMSc. En~i~~nmem:;r-i EiASpe~i~Ti~t- Techniques I Nguyen Thi Thanh Mai __:.~~~~~gX___ ~--=]=f~~.i':?I~ii~~I-~~~~arch assista:~n_:~t__ "----i---------------1 Bui Viet Hung ! PhD. Irrigation j Expert on modeling wastewater University of f-__________+ _ _ _ ________~nt~i,~!~ti~ll sp!eag________________ Natural Sciences Nguyen Van Mien BA. Biology I Expelt on aquatic animals and p~nts ________ ___________--'--___,_______---' ' - -_ _ _ _ _ _ _ _ _- - ' -_ _ _ _ _ _ _ _ _-'-1 4 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Appendix 2-1 Details of investment in LIAs They are summarized in Tables 1.3, 1.4, 1.5 and Table 1.6 (Source: The Work Construction Project Report (Component A) - Upgrading Infrastructure in LIAs, September 2010) Table 1.1: Vi --­ ... ~~--- No. ~~~ din!! li!!h .' ~ UPGRADING NEW - terns for 09 LIA ~ Length of Width of roadbed .. _ . - - ­ High Length of CONSTRUCTION AREAS route (m) Level of Lighting Lighting pressure cable (m) lighting box post lights ABC(m) -­ (W) I Binh Hien - Hai Chau district 3363 3321 1 56 156 -­ 1 K40 Trung Nu Vuong 165 Average 2m . -­ 160 3 .s--­ r---­ •.. 2 K 152 Trung Nu Vuong - 255 Average 2m 234 ~. 8 14 3 K307 Phan Chu Trinh 130 Average 2m 125 2 7 4 K 129 Huynh Thuc Khang 85 Average 2m 83 2 ----­ 4 5 K 135 Huynh Thuc Khang. 85 Average 2m 107 3 6 -­ K 180 Huynh Thuc Khang - K281 Hoang 6 226 Average 2m 226 6 13 ~.- Dieu K24 Nguyen Truong To 7 K320 Hoang Dieu 135 Average 2m Village - 134 1 2 7 -~ r-­ ---­ 8 K338 Hoang Dieu to Nguyen Hoang 445 Average 2-6m 415 4 .---­ 15 I 9 K266/57 Hoang Dieu 313 Average 2m 313 4 18 10 - !<:266/67 Hoang Dieu -­ 187 Average 2m_ 187 3 9 11 K266179 Hoang Dieu 346 Average 2m 346 5 18 12 K25 Trung Nu Vuong 86 Average 2m 86 3 6 13 K33 TrungNu Vuong 738 Average 2m - 738 7 16 14 - - ­ I---­ Trung Nu Vuong I---­ K67 167 Average 2m 167 4 9 -.--­ II Binh Tllllan - Hal Chau district 1437 ---­ f--­ 1387 1 8 59 1 K368 Hoang Dieu 580 Average 1.2· 3m Village 550 2 13 ~. ---8­ H89/K366 175 Average 2.5m "-illage - 155 I ) 3 -------­ _Small alleys in subareas ofBinh An I 682 Average 1.2 - 3m Village 682 III . Population Group No- 2- Nguyen Trl Phuong- Hoa Cuong Bac- Hai Chau 2206 ~- district 1 5 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B - ----c---­ 1 LIA No.2 Nguyen Tri Phuong B::;3.5m & B>3.5m Village 2.206 1 30 166 IV Hoa Tho Don/: - Cam Le district 1175 1 LIAs from Population Groups 16+29 Hoa 660 B=5.5m - 660 1 23 23 Tho Dong ward 2 LIA at Population Groups 27, 28, 29 30. 515 B::;3.5m - 515 1 6 22 31.32.33 Hoa Tho Dong ward -­ V Thuy Tu - Hoa Hiep Bac - Lien Chieu - - - - - - - district -­ VI f---­ An Hal Bac - Son Tra district 3509 1 LIA An Don, An Tan - B::;3.5m Village 3.509 2 184 --­ 194 VII An Hal Don/:. Son Tra district 533 --­ I LIA An Thanh, An Dong - B=5.5m Village 533 --­ 1 19 19 VIII Tho Quan/: - Son Tra district 3030 ~---- I LIA Thanh Vinh 1.2; Loc Phuoc 2.3 B::;3.5m & B>3.5m 2211 1 - 64 126 -­ --­ LIA Quang Cu B B::;3.5m 819 I 31 43 IX Tam Thuan - Thanh Khe district 900 712 1 22 28 - -­ I The road along the railway 180 A_verage 2.9m Village 153 -­ I 6 5 2c­ - _Alley 158 Tran Cao Van 400 Average 2.0m Village 369 11 18 -----­ 3 Alley 159 Tran Cao Van 80 Average 1.8m Village 53 2 2 4 Alley 165 Tran Cao Van 80 1-­ Average 2 - 2.5m Village 67 1 1 5 Alley 173 Tran Cao Van 80 ,verage 1.8 - 2m Village 70 ------~---- 2 2 Source: The Work COl1struction Project Statement - Component A (Phase 2) - 10 /2()JO Table I. 2: Upgrading the traffic system for roads, alleys in 09 LIAs No. Upgraded roads. alleys Length Width of road Width of designed Type of road (m) (m) road -- (m) I Binh Hien - Hal Chcw district 650 -- I _K338J:Ioang Dietl 140 Concrete road. Width 2 - 3m Average 2.5m Cement concrete ?-­ K266 Hoang Dietl 175 Concrete road. Width 4 - 5m Average 4.5m Cement concrete =-~ ~- f---­ --- -~- 3 K266179 Hoang Dieu 335 Concrete road. Width 3 -3.5m Average 3m Cement concrete II Binh Tltuan - Hal Chau district 2170 -- 6 ElA ofDa Nang Priority infrastructure investment Project - Phase 2B 1 K356 Hoang Dieu 484 Concrete road. Width 3.5 - 4m Average 3.5m Cement concrete ~2 K368 Hoang Dieu 580 Concrete road. Width 1.2 - 3m Average 2.2 - 2.5m Cement concrete 3 K408 Hoang Dieu 335 Concrete road. Width 1.2 - 4m Average 2.2 2.5m Cement concrete 4 K442 Hoang Dieu 242 Concrete road. Width 2 -3m Average 2.2 - 2.5m Cement concrete 5 K354 Trung Nu Vuong 223 Concrete road. Width 2 -2.5m Average 2.2 2.5m Cement concrete 6 Nguyen Hoang 220 Concrete road. Width 2 -2.5m Average 2.2 - 2.5m Cement concrete 7 - - - - r-­ H89/K366 Hoang Dieu 86 Width B= 1.3-2.1 m Average 2.5m Cement concrete --­ III Population Group No. 2- Nguyen Tri Phuong - Hoa Cuong Bac - Hai Chau --.-­ district: 1033 1 Route A 378 Concrete road 4m. Width 6-7m Average 6-7m Cement concrete 2 Route B 250 Soil road. Width 2-3m Average 2-3m Cement concrete ., ,., Route C 192 ---­ Soil road. Width 3-4m Average 3-4m Cement concrete _. 4 Route E 213 Concrete road. Width 1.5-3m Average 2-3m Cement concrete IV Hoa Tho Don.X - Cam Le district 1791.3 1 Route Dl-T12 (Dl intersects Nguyen 661.8 Concrete road 5.5 m Average 5.5m Cement concrete Nhan road and Ti2 intersects Binh Thai 1-. population group) along Phong Bac canal 2 Route N2-CN2 (along the alley ROW) 702.8 Concrete road 5.5 m Average 5.5m Cement concrete f-­ ,., connecting Route D I-TI2 ._­ Route N3-CN3 ( along the alley ROW) .) 426.7 Concrete road 5.5 m Average 5.5111 Cement concrete --­ V Tlwy Ttl - lIoa Hiep Bae - Lien Cllieu 4031.9 - district 1------. ----. Route Ngo Xuan Thu: lO19.6 Asphaltic road 13.5m B= 3.0m 7.5111+ Asphaltic road - Section 1: Starting from DDA (Highway --­ -­ 3.0m I A) to intersection 012 (Ngo Xuan Thu) Asphaltic road ll.Sm 3.0111 5.5m + Asphaltic road - Section 2 : From intersection D12 (Ngo 3.0m Xuan Thu) to the CDA (connecting to the 1--. 1 ADB project) . . - 2 Route N I-eN 1 188.2 =<3.5m =<3.5m Cement concrete ,., --~. .J Route NlA-l--CNlA-l 116.8 <3.5m ~<3.5m Cement concrete 4 Route NIA-2--CNIA-2 127.9 -­ =<3.5m =<3.5m Cement concrete 7 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Route NIA-CNIA 5 510.9 =<3.5m =<3.5m Cement concrete .. ~ Route N 1B-CN 1B 765.2 =<3.5m =<3.5m Cement concrete 7 _Route NICI-18(N1B) 23.9 =<3.5m =<3.5m Cement concrete ·s Route NIC2-11N3 51.4 =<3.5m =<3.5m Cement concrete 9 Route Nga3-CN lC 208.1 =<3.5m =<3.5m Cement concrete r­ 10 Route N2A-CN2A 252.7 =<3.5m =<3.5m Cement concrete 11 Route N2A-CN2B 121.2 =<3.5m =<3.5m Cement concrete 12 Route N2C-CN2C 75.8 =<3.5m =<3.5m Cement concrete 13 Route N2-CN2 282.4 =<3.5m =<3.5m Cement concrete 14 Route N3-CN3 287.8 =<3.5m =<3.5m Cement concrete r-­ VI - ­ An Hai Rae - Son Tra district --- --­ 1832.5 I Route A (the road after Tran Hung Dao 527.5 - Average 5.5m Cement concrete plots of land) 2 Route B 110 Soil road. Width 3m Average 3.0m Cement concrete r-;;----­ .) Route C 190 --­ Concrete road. Width 1.5m - Cement concrete 4 Route D 208 Concrete road. Width 1.2m - Cement concrete !-­ 5 -.-­ Route E - 170 Concrete road. Width 1.2m - Cement concrete ~- 6 Route F 175 Concrete road. Width 1.2m I-~ - Cement concrete Route G 200 Concrete road. Width 1.2m­ Cement concrete Average 2.0 3.5m _ . _ - ­ r-­3.5m --­ 8 Route II 252 Concrete road. Width 1.0m Cement concrete Average 2.0 m ---- -­ 2.0m VII An Hai DonK ­ Son Tra (listrict 1518 1 Le Huu Trac to Nguyen Cong Tru 858 Soil road. Width 6m - 9m Average 6.0-9.0m Cement concrete 2 Le Huu Trac to Nguyen Duy Hieu 245 Concrete road. Width 4m - Average 4.0-5.5m Cement concrete 5.5m 'I .) Le Huu Trae to Nguyen Duy Hieu 245 Concrete road. Width 5.5m to Average 5.5-6.0m Cement concrete i-­ 6m - - - - - ­ -­ - 4 Nguyen Cong Tru road 170 Asphaltic road J 0.5m Average 10.5111 Asphalt VIII Tho Quang - Son Tra district 5042 Thanh Vinh - Loc Phuoc 8 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 1 Route AC 668 Sm Sm Cement concrete 2 Route D-El 401.2 3.Sm-:-S.Sm 3.Sm-:-S.Sm Cement concrete 3 Route H-Hl 138.0 3.Sm-:-S.5m 3.5m-:-S.Sm Cement concrete 4 Route O-OS 716.1 3.5m-:-5.Sm 3.5m-:-5.5m Cement concrete 5 Route N-04 296.9 3.5m-:-S.Sm 3.Sm-:-S.Sm Cement concrete --~ 6 Route 01-03 137.3 3.5m-:-5.5m 3.Sm-:-S.Sm Cement concrete - ~ 7 Route L1-02 184.6 3.Sm-:-S.Sm 3.5m-:-S.5m Cement concrete 8 Route L-K 154.3 =<3.5m =<3.5m Cement concrete i 9 Route M-O 72.3 =<3.5m =<3.5m Cement concrete - 10 Route F-E 72.1 =<3.5m =<3.5m Cement concrete Quang C- B 1 Route A-E 272.4 3.5m-:-S.Sm 3.5m-:-S.5m Cement concrete 2 Route B I-B 182.2 3.5m-:-S.Sm 3.5m-:-S.5m Cement concrete - 3 Route B3-B6 172.2 3.5m-:-5.5m 3.5m-:-S.Sm Cement concrete 4 Route E2-E 51.8 3.Sm-:-5.Sm 3.5m-:-S.Sm Cement concrete r----­ 5 r---:-­ Route E3-E15 100.6 - 3.Sm-:-S.5m - 3.5m-:-S.5m - Cement concrete ~~ 6 Route E5-E3 178.2 - =<3.5m =<3.5111 Cement concrete - 7 1--­ Route E7-E4 108.5 =<3.5m =<3.5m Cement concrete - 8 Route E8-E16 149.8 3.5m-:-S.5m 3.5m-:-S.Sm Cement concrete - ~- - 9 Route E9-EIO 160.8 =<3.5m =<3.5m Cement concrete ~~-- 10 Route E11-E13 169.6 =<3.5m - =<3.Sm ~~--- Cement concrete Cement concrete~ -­ 11 Route E 12-B4 369.1 3.5m-:-S.5m 3.5m-:-5.5m 12 Route F-Fl 48.2 =<3.5m ~~<3.5m Cement concrettj 13 Route 02-B5 - 147.7 =<3.5m =<3.5m Cement concrete_ ~ 14 Route 0-G1 90.4 =<3.5m ~-~ =<3.5m - ­ ~~~ Cement concrete IX Tam Tlwlln - Thanh Khe district 2007 ~~ - - The road along the railway 180 Average 2.9m Average 2.9m Cement concrete \ 2 Alley IS8 Tran Cao Van to Nguyen Tat 450 Average 1.8- 3.5m Average 1.8- 3.Sm Cement concretei I Thanh - 3 Alley 59 (horizontal) to Alley 179 Cement concrete Average 1.0 -2.0m Average 1.0 -2.0m (horizontal) Tran Cao Van - ~ ~-~- 9 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 4 Alley 59 to Alley ISS Tran Cao Van 342 Average lO.5m Average 10.5m Asphalt ­ 5 Alley 145 Tran Cao Van SO Average 1.S - 2m Average 1.8 - 2m Cement concrete ~ ­ ­ Alley 147 Tran Cao Van SO ­ Average 1.S - 2m Average 1.S - 2m Cement concrete 7 -c--­ Alley 153 Tran Cao Van SO Average 1.6 - l.Sm Average 1.6 - l.Sm Cement concrete S Alley 157 Tran Cao Van SO Average 1.6 - 1.8m Average 1.6 - l.Sm 9 Alley 159 Tran Cao Van SO Average 1.Sm Average l.Sm Cement concrete 10 Alley 165 Tran Cao Van SO Average 2 - 2.5m Average 2 2.5m Cement concrete 11 Alley 173 Tran Cao Van SO Average 1.S - 2m Average 1.8 - 2m Cement concrete 12 '------­ Alley 179 Tran Cao Van 145 Average I.S - 2m Average 1.8 - 2m Cement concrete - Source: The Work Construction Project Statement - Component A (Phase 2) - 10 12010 Table 1. 3: [lJ dine Ih -- L <-~ C> dj . - - _... - . 09 LIA ....­ - ._. __--- _. --- _... '._._(::J._. . ._,.,.. ._. . ._. . . T - ._. ...... ......•.• - No. Work Items Length Width of Alley Scale of work Type of Drainage direction of work Alley (m) I Binh Hien- Hai Chau district 650 331 m - 1 Drainage culvert B800-L=135m Insite Discharge to the K33S Hoang Dieu 140 Average 2.5m concreted culvert of Hoang box culvert Dieu 1---­ - 2 K266 Hoang Dieu I 175­ Average 4.5m Drainage culvert BSOO-L=173m Discharge into the r--­ - c­ -­ 3 Drainage culvert BSOO-L=123m existing ditch BSOO K266179 Hoang Dieu 335 Average 3m Nguyen Hoang road -­ - -­ II Binh Tllllan- Hai Clzau district -­ 1 Discharge into the Insite existing ditch Hem HS9/K366 26S Average 2.5m Drainage ditch B400 ­ 268m concreted BxH = 600x 1000 box culvert Tran Cao Van road 1---­ III Population Group No. 2- Nguyen rri Phuong- Hoa Cuong Bac- Hai Chau district 1 Culvert route B (From 1B - 13B) 292 J Average 2 - 6m Drainage ditch B400 L=292m Insite Discharge into the_ 10 EIA ojDa Nang Priority Infrastructure Investment Project Phase 2B - ,.~ 2 Culvert route C (From 1C - 8B) 190 Average 1.8 - 3m Drainage ditch B400 - L= 190m concreted existing ditch --::;-­ Culvert route D (From 10 8B) 209 Average 1.8 - 3m Drainage ditch B400 - L= 209m-­ box culvert B400. B500. +­ - ­ Culvert route E (From 1E - 10E) 5 Culvert route F (From IF ~ 6F) 216 104 Average 1.8 - 3m Average 1.8 - 3m Drainage ditch B400 - Drainage ditch B400 L= 216m L= 104m B 1200 Planned road around ~ Culvert route G (From 1G - 15G) .. 362 Average 1.8 - 3m Drainage ditch B400 - L= 362m Population Group 7 Drainage ditch B400 - L= 34m No.2 Nguyen Tri 1<>-. Culvert route H (From IH ­ 3H) - 34 Average 1.8 - 3m Phuong i 8 Culvert route I (From 11- 31) 57 Average l.8 - 3m Drainage ditch B400 L=57m 9 Culvert route K (From 1K - 8K) 174 Average 1.8 - 3m Drainage ditch B400 L= 174m -. 10 Culvert route L (From 1L - 4L) 100 Average 1.8 - 3m Drainage ditch B400 L= 100m 11 Culvert route N (From 1N - 3N) 53 Average 1.8 - 3m Drainage ditch B400 - L= 53m ~2 Culvert route M (From 1M - 3M) 49 Average 1.8 - 3m Drainage ditch B400 L=49m - IV r--­ Hoa Tho Dong- Cam Le district - Installing drainage systems for Average 2 - 5.5m Drainage culvert B800-L=m Insite Discharge into the I-­ . Dramage culvert B60 ­ f----­ - population groupsFrom group 16­ Average 2 5.5m O-L=m concreted existing ditch 23 and From group30-33 box culvert with covering ,----­ slab V Tlwy Til - H oa Hiep Bac - Lien Chiell district ~.- -.~----- ,-­ - Drainage ditch: B400 L= 300m I Route E From E 1 to E34 991 B600-L=300m. B800-L=327m. _ .. ­ B 1000-L=63m .-.­ 2 Route A From A 1 to A31 1212 - Drainage ditch B400-L=94m. B600­ L=706m. B800-L=412m. Insite .. ­ Discharge into the "I -' Route C From C 1 to C20 844 - Drainage ditch B400-L=78m. B600­ concreted existing ditchtrang 4 Route D From 01 to DI5 r-:-­ 378 - L=541m. B800-L=225m. Drainage ditch B400-L=35m. B600­ - box culvert L=169m. B800-L=174m. 5 Route J From J1 to J4 139 - Drainage ditch B400-L= 97m B600-L=41 m. 11 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B 6 Route F From F1 to F9 211 - Drainage ditch --~ B400 L= 101m. B600-L=110m. 7 Route G From Glto G26 711 - Drainage ditch B400 - L= 337m. . B600-L=375m. 8 Route H From HI to H5 73 - Drainage ditch B400-L= 220m -~ B600-L= 198m ~~~ VI LIAs ofAll DOIl- All Tall- All ifai Bac- Son Tra district 1 Route A From Al to A15 496 - Drainage ditch B300 - L= 241m and B400-L=255m. 2 Route 8 From 81 to B26 727 - Drainage ditch B600-L=643m. B800-L= 84m. "" .J Route C From Cl to C9 320 - Drainage ditch 8300 ­ L= 320m Discharge into the 4 Route D From D 1 to D7 238 - Drainage ditch B300 L= 238m. lnsite rs Route E From E1 to E3 - 82 - - - - Drainage ditch B300 - L= 82m concreted existing ditchtrang B800 Tran Hung 6 --;:;-­ Route F From FI to F4 136 - Drainage ditch 8300 L=136. box culvert ~~~ Dao road Route G From G 1 to G6 242 - Drainage ditch 8300 L= 242m. S- Route H From HI to H8 163 - Drainage ditch B300 - L= 163m 9 Route I From Il to 14 120 - Drainage ditch 8300 L= 61m. f-­ - - B400-L=59m 10 f---­ Route K From K1 to K2 48 - Drainage ditch 8300 L=48m VII Group 37- 38 All Trullg Dong- A~Hai DOllg- SOil Tra district - ~~ -­ 1 Route A From lA to lOA 195 Drainage ditch B600-L= 191 m Insite 2 -;;-­ . Route 8 From 18 to 19B 350 - - .~ - Drainage ditch B600-L=345m concreted Discharge into the .J -~- Route C From 1C to 13C 392 ------~ - Drainage ditch 8400-L=387m box culvert existing ditch 4 - Drainage ditch B400-L=403m with BxH'" 600x 1000 Route D From ID to 17D 409 covering slab ,--­ - - ,--Ill Tho Quallg- SOil Tra district ~- '------ Thanh Vinh- Loe Phuoe ~~~ 12 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 1 Drainage ditch B400 200m and Route A From Al to A18 S42 B600-L=84m. B800-L= 39m. I BIOOO-L=219m ~~--;--------------------------------I----- Drainage ditch B400 - L= 177m. Route B From B 1 to B22 S20 B600-L=72m. B800-L= SOm. Insite Discharge into the BIOOO-L=221m concreted existing ditch and 3 Drainage ditch B400 L= 171m. box culvert new designed Route C From B 1 to B22 361 B600-L=38m. B800-L= 86m. with culvert route Tho B1000-L=66m covering Quang Bien ~~~~~{:sg~~h 4 Dong Route 0 From 01 to 09 _229 ... ! .! B400 - L= 170m.! slab IRoute E From El to ES 138. _ . . Drainage ditch B400 - L= 138m . Drainage ditch B400 - L= 101m. 6 'Route F From Fl to FlO 440 B600-L=110m. _ I -----1 7 ?"? Drainage ditch B400 - L= 137m. R oute G F rom Gl t0 GI2 -.)­ B600-L=9Sm. ~-.~--------------------- -~.~------------------------ 8 Route H From HI to HS 73 Drainage ditch B400 L= 73m ~ Route J From Jl to J6 IS7 Drainage ditch B400 - L= IS7m 10 Route 1 From II to IS 120 Drainage ditch B600 - 120m 11 Route K From KI to K4 61 Drainage ditch B400 12 "07 Drainage ditch B400 -­ Route N From Nl to NI0 t-------------------------+--" B600-L=99m. B800-L= 99m. I Drainage ditch B400 - L= 89m. Rou te M F rom MI t o.M7 B600-L=89m . .~------------------'- Drainage ditch B400 92m Drainage ditch B400 -. L= 38m. , B800-L= 119m. 16-1I i Route Q From Ql to Q 1 2 - --;-3; 6" ,)m. B600-L=176m. rI7.. R t UF lU _ 2SU 606 Drainage-ditch B400 - L= 348m; L_ _ ou e rom B600 L= 120m;B800 L = 138m .... 1-1 _ _ _ _L -_ _ _ _ _ _ __ 13 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 18 - Drainage ditch B400 - L= Route V From IV -19V 501 203m;B600 -L=220m;B800 - - L=78m . 19 - Drainage ditch B400 L= Route Z From lZ ­ 41Z 1586 992m;B600 - 264m;B800 - L == - 11 m; B 1000 - L=319m IX -­ Tam Thuan- Thanh Khe district 625 614 1 f--­ Alley 147 Tran Cao Van 80 Average 1.8 - 2m Drainage ditch B400 L=78m lnsite Discharge into the ! 2 Alley 153 Tran Cao Van 80 Average 1.8 - 2m Drainage ditch B400 L= 78m concreted existing ditch 3 Average 1.6 Drainage ditch B400 - L= 78m box culvert BxH= 600x 1000 Alley 157 Tran Cao Van 80 Road Tran Cao 1.8m -­ ~~ Van Average 1.6­ Drainage ditch B400 L=78m Alley 159 Tran Cao Van 80 -.-­ 1.8m 5 Alley 165 Tran Cao Van 80 Average 1.8m Drainage ditch B400 - L 78m - 6 Alley 173 Tran Cao Van 80 Average 2 - 2.5m Drainage ditch B400 - L= 78m 7 Alley 179 Tran Cao Van 145 Average 1.8 - 2m_ Drainage ditch B400 - L= 146m ---­ Source: The Work Construction Project Statement - Component A (Phase 2) -1012010 14 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B - Table 1.4: The investment scale ofthe water supply system in 09 LIAs No. Upgraded Road, Alley Length of Option 1- Pipes on both sides Option 2- Pipes on one side road ~f Alle~ of Alley (m) Length (m) Diameter Length (m) Diameter -­ - I Binh Hien- Hai Chau district 1 Connection Point No. 1 20 40 DSO-HDPE 20 - DSO-HDPE . 2 Alley 362 Hoang Dieu ­ Point 2 130 260 D63-HDPE 130 D63-HDPE . .) Connection Point No.3 - 90 - 180 D63-HDPE 90 D63-HDPE - 4 Connection Point No.4 60 120 D50-HDPE 60 D50-HDPE -S Connection Point No. S 32 64 D50-HDPE 32 D50-HDPE 6 Connection Point No.6 32 64 DSO-HDPE 32 DSO-HDPE 7 Connection Point No.7 .­ 172 344 D63-HDPE 172 D63-HDPE ~. Connection Point No.8 272 S44 D50-HDPE 272 D50-HDPE - 9 !---._. Connection Point No.9 80 160 D50-HDPE 80 DSO-HDPE 10 Connection Point No. 10 70 140 DSO-HDPE 70 D50-HDPE ~. -~-- - Connection Point No. 11 24S 490 D63-HDPE 245 D63-HDPE - 12 Connection Point No. 12 105 2lO D50-HDPE 105 D50-HDPE - 13 Connection Point No. 13 - 90 .-~ 180 _. . DSO-HDPE 90 D50-HDPE -­ 14 Connection Point No. 14 130 - 260 - DSO-HDPE 130 DSO-HDPE 15 Connection Point No. 15 25 ._- !----­ 50 D50-HDPE - 25 D50-HDPE 16 Connection Point No. 16 25 .._. 50 DSO-HDPE 25 DSO-HDPE -~~-- I-­ - 17 Connection Point No. 17 60 120 DSO-HDPE 60 D50-HDPE . ­ ~- Connection Point No. 18 32 64 D50-HDPE 32 D50-HDPE -­ 19 Connection Point No. 19 42 84 DSO-HDPE 42 D50-HDPE -,-­ f-­ 20 Connection Point No. 20 - 87 .­ 174 D50-HDPE 87 D50-HDPE 21 Connection Point No. 21 85 170 DSO-HDPE - 85 - D50-HDPE - 22 Connection Point No. 22 .. __ ._­ 103 206 DSO-HDPE 103 D50-HDPE - 23 D50-HDPE 25 D50-HDPE - ­ Connection Point No. 23 25 .­ - 50 22 22 D50-HDPE - 24 Connection Point No. 24 Connection Point No. 25 44 DSO-HDPE D50-HDPE D50-HDPE 2S 20 40 20 .­ 15 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B II III Binh Thuan- Hai Chau district I Populatio1l Group No- 2- Nguyell Tri PItUOllg- Hoa Cllong Bac- - - - - - - Hai Chau district I 1 Connection Point No. 1 125 200 050. D63-HOPE --­ 2 Connection Point No.2 115 115 D50 - OHPE 3 Connection Point No.3 75 75 050 - OHPE - 4 Connection Point No.4 324 324 050. 063-HOPE 5 Connection Point No.5 60 60 D50 - OHPE - 6 Connection Point No.6 66 66 050 - OHPE -­ 7 Connection Point No.7 90 150 050 - DHPE 8 Connection Point No.8 46 - 46 D50 - OHPE 9 Connection Point No.9 60 110 050 - DHPE 10 Connection Point No. 10 36 36 050 - OHPE r-u /-----­ Connection Point No. 11 40 40 050 - OHPE '.-­ 12 Connection Point No. 12 135 210 050 - OHPE 13 Connection Point No. 13 50 50 050 - OHPE -~ IV Hoa Tho DonJ;!- Cam Le district - 1--­ 1 Connection Point No. 1 125 200 050.063-HDPE - 2 Connection Point No.2 115 lIS 050 - OHPE ---­ f------­ -.--­ -.~------- ~ '"' Connection Point No.3 75 75 050 - OHPE -­ <-­ t-­ ------~---- 4 Connection Point No.4 324 324 050.063-HDPE ----­ --­ 5 Connection Point No.5 60 60 050 - OHPE - - 6 Connection Point No.6 66 . 66 050 - OHPE I--­ - --­ 7 Connection Point No.7 90 150 050 - OHPE 8 Connection Point No.8 - -­ 46 -­ 46 050 - OHPE - - - i ­ e---­ 9 Connection Point No.9 ---­ 60- 110 - 050 - OHPE 10 Connection Point No. 10 36 36 050 - OHPE - - 11 Connection Point No. 11 40 ---­ 40 050 - OHPE - ­ .­ 12 Connection Point No. 12 - 135 210 - 050 - OHPE -13 Connection Point No. 13 ­ 50 50 050 - OHPE V Thuy Tu- Hoa Hiep Bac-Lien Chieu district 16 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B -­ 352 704 D63-HDPE 352 D63-HDPE-----~ 1 Connection Point No. 1 300 600 D50-HDPE 300 D50-FIDPE -­ -­ 437 874 D63-HDPE 437 D63-HDPE ,~ Connection Point No.2 65 ----~-- 130 -­ D50-HDPE 60 D50-HDPE 1130 2260 DII0-HDPE 1130 DllO-HDPE ,., -­ -­ --­ .) Connection Point No.3 1437 2874 D63-HDPE 60 - - ­ D63-HDPE 3063 6126 D63-HDPE 3063 D63-HDPE - ­ 4 Connection Point No.4 199 398 D50-HDPE 199 D50-HDPE 242 -­ 484 D63-HDPE 242 D63-HDPE 5 t---­ Connection Point No.5 20 --­ 40 D50-HDPE -­ 20 - D50-HDPE 200 400 D63-HDPE 200 D63-HDPE 6 Connection Point No.6 70 140 D50-HDPE 70 D50-HDPE ~- VI An Rai Bac- Son Tra district --­ 630 1260 DllO-HDPE 630 DllO-HDPE 1 Connection Point No.1 135 -­ 270-­ D63-HDPE 135 D63-HDPE VII f------­ An Rai DOllg- Son Tra district ,--, -­ I Connection Point No. 1 100 200 D50-HDPE 100 D50-HDPE r------=-­ 2 Connection Point No.2 77 154 D50-HDPE 77 D50-HDPE ,., -,­ .) 1-------­ Connection Point No.3 35 70 D50-HDPE 35 D50-HDPE 4 Connection Point No.4 74 74 D50-HDPE 148 D50-HDPE 5 -- - ­ t-----:-­ Connection Point 1'.;0. 5 76 152 D50-HDPE ~~-- 76 D50-HDPE -­ 6 1-------­ Connection Point 1'.;0.6 50 102 -------­ D50-HDPE 50 - - - ­ D50-HDPE 1---­ 7 Connection Point No. 7 51 102 D50-HDPE 51 D50-HDPE ,..,,., 8 Connection Point 1'.;0. 8 -­ .).) 66 D50-HDPE - 33 D50-HDPE 9 f - - - -­ Connection Point No.9 20 40 D50-HDPE 20 - ­ D50-HDPE 10 Connection Point No. 10 30 60 -----­ D50-HDPE 30 D50-HDPE -I-­ -­ -­ 7t Connection Point No. 11 50 100 D50-HDPE 50 -­ D50-HDPE 12 Connection Point No. 12 -­ 92_~_ 140 D50-HDPE 90 D50-HDPE - r-!~ Connection Point No. 13 50 100 D50-HDPE 50 D50-HDPE 14 Connection Point No. 14 70 140 D50-HDPE 70 D50-HDPE ~ Connection Point No. 15 --­ 80 160 D50-HDPE 80 ---,----­ D50-HDPE 17 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B ---­ 16 Connection Point No. 16 40 80 050-HOPE 40 DSO-HOPE--­ -17 ­ Connection Point No. 17 51 102 050-HDPE 51 D50-HDPE - ­ 18 Connection Point No. 18 - 80 160 DSO-HOPE 80 OSO-HOPE 19 --~ Connection Point No. 19 16S - 063-HOPE 16S 063-HOPE­ L_20 Connection Point No. 20 330 . - - ­ .­ -­ 063-HDPE - 330 - D63-HDPE , 21 Connection Point No. 21 30 60 050-HOPE 30 D50-HOPE ~- Connection Point No. 22 121 242 D50-HOPE 121 D50-HOPE --­ - 23 Connection Point No. 23 - 60 120 - 050-HOPE 60 D50-HDPE 24 Connection Point No. 24 72 144 050-HOPE 72 D50-HDPE - J2!I Tho Quang- Son Tra district Thanh Vinh- Loc Phuoc ~l - .-­ - Connection Point No. 1 220 440 OlIO-HOPE 220 DllO-HOPE 83 166 OSO-HDPE 83 - 050-HDPE 2 Connection Point No.2 245 490 063-HOPE 245 D63-HDPE " .) --­ Connection Point No.3 40 100 050-HDPE 40 050-HOPE 445 890 OlIO-HOPE 445 OlIO-HDPE 264 528 063-HOPE 264 063-HOPE - - 4 Connection Point No.4 ---­ 860 1720 050-HOPE 860 050-HOPE - QuangCu - - 1 f-----. Connection Point No. 1 30 60 050-HDPE -'_. 30 D50-HDPE ') .-=---­ Connection Point No.2 100 200- . DSO-HDPE 100 050-HOPE "., Connection Point No.3 50 -- 100 D50-HOPE 50 D50-HOPE 15 30 063-HOPE -­ 15 063-HOPE t----­ 4 Connection Point No.4 SO - 100 D50-HOPE 100 050-HDPE 5 Connection Point No.5 80 160 050-HDPE 80 D50-HOPE 6 Connection Point No.6 71 142 050-HDPE 71 --­ 050-HDPE 7 Connection Point No.7 60 120 - ­ 050-HOPE 60 D50-HOPE _. -­ -­ - 8 Connection Point No.8 100 200 050-HDPE 100 - 050-HDPE I Connection Point No.9 65 130 OSO-HOPE 6S 050-HOPE 10 Connection Point No. 10 220 440 050-HOPE ' - ' 220 050-HOPE 11 Connection Point No. 11 195 390 DIIO-HOPE 195 0II0-HDPE 18 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B - - 550 1100 D63-HDPE 550 D63-HDPE 12 Connection Point No. 12 115 230 D50-HDPE 115 D50-HDPE..- IX Tam Thuan- Thanh Khe district 1 Along Tran Cao Van From Alley K147 to KI8I 175 175 DllO-HDPE 175 Dl10-HDPE • 2 Alley 97 Tran Cao Van 80 150 D63 - DUPE 75 063 - DHPE ~ Alley 111 Tran Cao Van 80 140 D63 - DHPE 70 D63 - DHPE - - . Alley 117 Tran Cao Van 80 140 D63 - DHPE 70 - D63 - DHPE -­ 5 Alley 125 Tran Cao Van 80 150 D63 - DHPE 75 D63 - DHPE 6 Alley 135Tran Cao Van 80 - 150 D63 - DHPE 75 D63 - DHPE 7 r----:--.. Alley 141 Tran Cao Van 80 - 150 - D63 - DHPE 75 D63 - DHPE 8 Alley 147 Tran Cao Van 80 150 D63 - DHPE 75 D63 - DHPE ~ Alley 157 Tran Cao Van - 80 140 D63 - DHPE 70 D63 - DHPE 10 Alley 159 Tran Cao Van 80 150 D63 - DHPE 75 D63 - DHPE - 11 .. Alley 165 Tran Cao Van 80 150 063 - DHPE 75 D63 - OHPE 12 Alley 173Tran Cao Van 80 75 D63 - DHPE 75 D63 - DHPE 13 Alley 179 Tran Cao Van ... 145 .­ 220 D63 - OHPE 145 D63 - DHPE 14 -.­ Alley 181 Tran Cao Van - ... 80 75 063 - DHPE 75 D63 - DUPE 19 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Appendix 3-1. Alternative for LIAs 1 atHc 1. t:'ropose<1 mvestment m upgraamg the transport system at roa d . _"~ ." .~ ......~ .~ _ .,--_______. r-- Upgraded roads and alleys Length Width (m) Proposed upgraded options Community's option Environmental N (m) Option 1: as Option 2: as assessment o. existing planned roads/alleys roads/allt:Y§__ I Blnh Hien, District Hiti ChOu 650 _ t------.--j--,----=-~---_t_------__i 1 K338 Hoang Di~u Str. 140 2-3 2,5m 4m r--:-:A~v.:.:er.:.:aQ.ge=-2=c,c=_5.:.:m=___ __ + _ - - - - - - _ l 2 K266 Hoang Di~u Str. 175 4-S 4,5m Sm Average 4,5m ~ K266179 Hoang Di~u Str. 335 3 -3.5 3m 4m A verage 3m _~ Il Blnh Thu(m, District Hai ChfLU -_.. - +----­ 1 K3S6 Hoang Di~u Str. 484 _ 3.S - 4 3,Sm Sm Average 305m c--1- K368 Hoang Di~lI Str. 580 1.2 - 3 2,2 - 2,5m 4111 Average 2,2 - 2,5m _-+-______ 3 K408 Hoang Di~lI Str. 335 1.2 -4 Ave~,~~n2,2 - 4m Average 2,2 - 2,5m r---- . - .-+---------j--------­ 4 K442 Hoang Di~u Str. 242 2 -3 Ave~~~2,2 - 3m Average 2,2 - 2,5m _ Average 2,2 S K354 Tnrng Nu Vlfong Str. 223 2 -2.5 2 Sm 3m Average 2,2 2,5m I- ' - i - - - - '" , Average 2 2 ­ 6 Al\ey of Nguyen Hoang Str. 220 2 -2.S 2 _ ' 3m Average 2,2 - 2,5m .__ ,)m .___ .._ _.._.. _ f 189/K366 Hoang Di~u Str. 86 13-2.1 A ver;g5e 2,2 - 3m P¥ _, m III ~ _Residentia{ area No.2- Ngl!Il!l Tri PlllJ'(J·ngSt".:'L'H=iJ.:.:a~C::..:U'::..:fY::..:'n~=B.:.:ti.:::c,~D:..:is::.:t::..:Flc::::·c=-t::.::1l;.::a:.:..i..:::C:.::'h:::a=u_ _ _ _ _--,-_ _ _ _ _ _ _.~__,_----.~-- I ROLlte/TuyenA 378 4-7 Average6-7m 3m Average6-7m 2 ROllte/Tlly~n 8-2:50 2-3 Average 2-3m 3m ._ _ .. ! Average 2-3m 3 c----- Route/Tuyen C . - , 192 3-4 Average 3-41'11 y >.. 4111 Average 3-4m >_. 4 Route/Tuyen E 213 1.5 ·3 Average 2-3m 2.5-}r:11 Average 2-3m ~V Hoa Tit!, Dong, District Cam L? 20 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B - ~ ~~ Route/Tuy~n DI-TI2 CDI 1.096 4 Existing 4m Existing intersection with Nguyen Nhan Str. and TI2 of the 1 local street residential Binh Thai) as Phong Bac - canal Routenuyen N2-CN2 (as 703m 3,5 -4 Existing 4m Existing planned alleys); the beginning 2 point connected to route D 1­ -­ 1'12 ~- --~~ - Route/Tuyen N3-C3 (as 427m 3,5 4 Existing 4m Existing 3 planned alleys) - - V Thuy Tu, Hoa Hi?!!. Brie, District Liell Chi~u ~ ~- Routenuy€n Ng6 Xuan Thu 1014 Asphalt road, Existing 13,5m Existing Str.: BI3,5m, L = 800m 1 Asphalt road, Existing 13,5m Existing B l1,5m, L =214m ~~~ Route/Tuycn N l-CN 1 188.2 - =<3,501 Road-surface As proposed =<3,5m Routenuyen N 1A -1--CN IA- Restatement planned alleys, 3 I 116.8 =<3,5m ~ ~~ after 8=3-6m =<3,5m RoutelTuyen NIA-2--CNIA­ construction 4 2 127.9 =<3,5m of drainage =<3,5m r----:-~~ ~- - f--5 RoutelTuven N 1A-CN I A 510.9 =<3,5\11 system along =<3,501 r-6 Route/Tuyen N I B-CN I 8 765.2 =<3,5m alleys =<3,5m ~~ Route/Tuyen N 1C l-18(N I B) r--2­ Routenuyen N I C2-J I N3 23.9 5! .4 =<3,5m =<3,5111­ =<3,5m =<3,5m ~- Routenuyen Nga3-CN Ie 208.1 =<3,5111 =<3,5m ~.~- - 10 Route/Tuy~n N2A-CN2A ~~ 252.7 :---~ =<3,5111 ~ __ ="<3,5m ~~ II Route/Tuyen N2A-CN2B 121.2 ~- =<3,5m =<3,5m - 12 Route/Tuyen N2C-CN2C 75.8 =<3,5m =<3,5m ~ ~- Route/Tuyen N2-CN2 282.4 =<3,5m =<3,5m -T% Route/Tuyen N3-CN3 287.8 =<3,5m - =<3,5m ~- ~~ VI All Hili Bile, District Still Tra 21 EIA ofDa Nang Priority ltifrastructure Investment Project Pha'le 2B RoutelTuy~n A (Route/Tuyen 527,5 - Average 5,5m 1 behind residential area Tr~n Average 5,5m 3,5m , H11I1g D!}.o) 2 Route/Tuyen B 110 3m Average 3,Om 3m - Average 3,Om 3 Route/Tu::ien C 19O 1.5m As existing - - 4 Route/Tuy~n D 208 Um - - 5 Route/Tuyen E 170 1.2m - - 6 Route/Tuyen F 175 1.2m -­ - - -.~ Route/Tuycn G 200 1.2m -3,5m Average 2,0 7 Average 2,0 - 3,5m 3,5m 8 Route/Tuyen H 252 I.Om 2,Om Average 2,0 m Average 2,0 m .-- Vl/ An Hili Dong, District Sun Tril _.­ From U Hiiu Tnic Str. to 858 5.5m - 8m B=II,Sm 1 Nguyb C6ng Tn! Str. (Alley B=II,5m 11,5m 59 U Huu Trac) .­ Alley-surface reinstatement - Existing Existing - Existing 2 after construction of drainage system i -­ - -VllI Th() Quang, District SO'll Trt'--r-- _­ ..~ C---. --­ - --­ 1 Route/Tuyen from A to E 275 - 1-2 Route/Tuyen from B I to B 203 f---::; .) ROllte/Tuy~n from B3 to B6 194 --­ ~- Route/Tuyen from E2A to E 52 t-S Route/Tuyen from E3 to E 15 103 6 Route/Tuyen from E5 to E3 200­ 7 Route/Tuyen from E7 to E4 124 -S RoutelTuyen from E6 to [16 191 ° ~- 9 ROllte/Tuyen from [9 to E I Routerruy~n fcom Ell to --.J} Route/Tu~en from E 12 to B4 El3t 177 179_ 370 3 Route/Tuy~n from F to F I _ _ ~___ - 13 Route/Tuyen from G2 to B5 150 14 Route/Tuyen from G to G I 91 As planned 15 Route/Tuy~n duemg EC 670 3,5m-:-S,Sm 5m Existing alley B=Sm - , 16 RoutelTuyen from 0 to E I 400 " - - 22 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B -- Route/Tuyen from H to HI 17 138 Route/Tuyen from G to 05 . ­ 18 715 Route/Tuyen from N to 04 19 300 RoutelTuyen from 01 to 03 20 133 Route/Tuyen from Ll to 02 1--21 186­ ~. Route/Tuyen from L to K 159 23 Route/Tuyen from M to 0 73 24 ROlitelTuyen from F to E 73 Tam Thuf1.n, District Thanh IX 2007 Klle 1 RoutelTuyen along railroad 180 2,9m 3m 2 3 Alley 145 Tnln Cao Van Str. Alley 147 Tnln Cao Van Str. 80 80 1,8 - 2m 1,8 - 2m -~ 2m 2m 4 Alley 153 Tran Cao Van Str. - 80 1,6 1,8m - 2m 5 Alley 157 Tran Cao Van Str. 80 1,6 I,8m Existing 2m Existing 6 Alley 159 Tr3.n Cao Van Str. 80 1,8m 2m 7 Alley 165 Tdin Cao Van Str. 80 2 2,5m -­ 3m - 8 Alley 173Tran Cao Van Str. 80 1,8 - 2m 2,5m 9 Alley 179 Tran Cao Van Str. 145 1,8 - 2m 2,5m Source: Report ofConstruction Investment Projects - Component A (phase 2). April 201 J 23 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B p h ~ . J . '_ __ --_. ---------- - ..... ...... PfiOOll .. - - .. Jl,&~ .&.fiOt ....... -y - - - ______ ............ 09LI - .. - ...• -~- Road Road No. UPGRADED LIAs length width Proposed alternative/invest~d ~ption (phrro'ng an d~ xu~t thay (m) (m) the, dau trr) High- Community 's I Environmental Light level/C~p Cable Light voltage collection assessment chi~u Light pole length light panel (steel sang ABC(m) fittings 1>114) .­ (W) I Blnh Hien, District Hai Chau 3321 1 56 156 1 K40 Tmng Nil Vuong Str. 165 2m 160 3 8 Agreed wit h KI52 Tmng Nil VU'011g 2 255 2m 234 the propose d Str. 8 14 option Str,~o .-­ I---­ 3 K307 Phan Chu Trinh Average 2m 125 2 7 c-----­ - - ._­ 4 K 129 Huynh ThlIe Khling Average Str. 85 83 2 4 I 2m 5 K 135 BuS/nil Thue Khang Average Str. 85 107 3 6 2m . ­ KI80 Huynh ThUc Khang Str.- K281 Hol'mg Di~u Str. Average 6 226 K24 Nguy~n Tmo-ng T9 2m Alleys 226 1 6 13 Str. '­ _. K320 Hoang Di~L1 Str. Average Ps- 135 134 2 7 -. -­ 2m -- K338 Hoang Di~lI Str. to Average Nguv~n Ho,\ng Str. 445 415 4 15 ~ 2-6m K266/57 Hoang Di~L1 Str. Average 313 313 4 18 r---­ 2m ­ .. 10 K266/67 Hoil11g Di~u Str. Average 187 187 " '.)' 9 2m 11 K266179 Hoang Di~u Str. Average 346 346 5 18 L--._. 2m ._-'--._-­ 24 EIA (?fDa Nang Priority Infrastructure Investment Project - Phase 2B 12 86 3 6 ~-----1-------' 13 I K33 Trung Nil' VuO'ng Str. 738 738 7 16 2m Average 14 I K67 Tmng Nu' Vuo'ng Str. 167 167 4 9 2m __~______________ II Blllh Thu{ill, District H i i i l - - ­ 1437 1387 I 8 59 Chau ~ I--- 1 Average Agreed with K368 Hoang Di~u Str. 580 Alleys 550 2 13 the proposed option 2 I H89/K366 175 Alleys 155 3 8 I--­ Alley s of s ome small ar eas 3 682 Alleys 682 3 38 in Bi nh An area 1.2 - 3m 1 ResirieJltial ar ea No. 2­ Nguyill Tri Phuxmg III Str., Hoa Cll'l'rilg Blic, District Hili Chliu ---_. LIA No. 2 Nguy~n Tri Agreed with I PhuO'ng the proposed l--­ ..____ 0 tion - I - ._ _ _ _ __ IV \ H~a Til!, DOllg, District f---- .. Cam Lr LIAs from 16 to 29 660 660 23 Agreed with I subwards, ward Hoa ThQ the proposed II Dong B=5,5m option 1~ IAS-O-f--Sl-lb-\-Va-r-d-S-2-7-.-2-8-'~~-5-1-5- ---._­ ------j---:--:------t-­ 515 6 22 f--­ ----­ . 2 29,30,3 J. 32 and 33, ward B::;3,5m I J Hoa ThQ Dt1ng -1--- ....­ +--­ ~--- --------~ G - II Thill' . .Til, . H 00 Ififp Btfc, .. I . District Lien Chieu ____ LIA Th~IY Ttl - ward Hoa -r B=7,5m Alleys 3.388 80 114 Agreed with Hi~p Bae J B =5,5m the proposed option 25 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B ~ ~- B :2:3,Sm -~~ ~- An Hili Bae, District SO'll VI rro --­ LIA An Don, An Tan - B:::3,5m Alleys 184 194 Agreed with 1 3.509 2 the proposed oRtion - An Hili Dong, District Sun VII r----­ rro LIA An Thanh, An Dong - B=S,Sm Alleys 533 I 19 19 Agreed with I the proposed option rlltJ Quang, District Sun VIII -~ rro 8:::3,5111 2211 I 64 126 Agreed with LIA Thanh Vinh 1,2; L9C I & the proposed PI1U'O'c 23 option B>3,Sm ---­ I f--­ I I LIA Quang Cll' B B:::3,5m 819 I 31 43 Tam Thu~n, District IX 900 712 1 22 28 f----~ Thanh Khe ~--- - Road route along the Average I 180 Alleys 153 I 6 5 railroad 2,9m -~-- Alley 158 Tran Cao Van Average 2 400 Alleys 369 11 18 Str. 2,Om -~ Agreed with Alley 159 Tran Cao Van Average " j 80 Alleys 53 2 the proposed -­ Str. 1,8m option Alley 16S Tnin Cao Van Average 4 80 Alleys 67 I Str. 2 2,Sm 1-----­ Alley 173 Tr~n Cao Van Average S 80 Alleys 70 2 '-----­ Str. ~ ~- 1,8 - 2m i Source: Report o/Construction Investment Projects - Component A (phase 2), April 2011 26 EIA ofDa Nang Priority Infra<;tructure Investment Project - Phase 2B __ Table 3: Proposed investment In upgrading the drainage system in 09 LIAs ~ Upgraded LIAs Alley Alley width .;Proposed options . Community's nvironmental No. length (m) Scale Option 1 Option 2 Option 3 sellection assessment (m) -1-1----­ I Bi~l.h Ifiell, District 650 331 m Hat Cltau Average Drainage pipe B800­ 1 K338 Hoang Di~u Str. 140 Brick trench 2,5m L=135m In-place Reinforce with In-place Average Drainage pipe B800­ concrete 2 K266 Hoang Oi~u Str, 175 concrete reinforce concrete box LI - - j _ _ _ 1 4,m ',_ ••• L=173m box with , . 'A pipe concrete with covers K266179 Hoang Dl~U Average Drainage pipe B800­ covers 3 335 covers Str, 3m L=123m II I Biult Tltu{in, District I---_~ Hili C~a::.::u-=--_____---if--___-+-____.--+___________ Brick trench In-place Hem H89/K366 268 Average 2,5m Drainage trench B400 ­ 268m Iconcrete concrete box with Reinforce with reinforcc In-place concrete box pIpe concrete with covers covers covers III I filtu tlall ~u sa 2- Nguy€n Tri PltUO'l1g, Hoa Cuo'nl( Bac, District Hili Chau I-----li '...Tuyen cong B (from IB to 13B) I 292 ..1.Average ~ 2 - 6m 292m ? I fu;in c6ng C (from . -­Average Drainage trench B400 190 Brick trench - i let08B) 1,8 - 3m 190m In-place Reinforce with In-place -, i ~ I TUJ.'~n c.6ng 0 (from ~ Average ~ 209 ~ Drainage trench B400 -. concrek concrete reinforce concrete box - 110t08B) 1,8-3111 209m box with pIpe concrete with covers 4 I Tuy~n c6ng E (from 216 Average Drainage trench B400 ­ covers covers i IE to 10E) 1,8 - 3m 16m Tuyen cong F (from IF Average Drainage trench B400 L= 5 104 to 6F) 1,8 - 3m 104m 27 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Tuyen cong G (from "62 Average Drainage trench B400 - L= 6 IG to 15G) -' 1,8 - 3m 362m TuySn c6ng H (from 34 Average Drainage trench B400 - L= 7 IH t? 311) 1,8 - 3m 34m 4 _ _ _ _l - -_ _ ~ ' 8 Tuyen cong I (from II 57 Average Drainage trench B400 - L= _ -3I) 1,8 - 3m 57m 9 Tuyen cong K (from 174 Average Drainage trench B400 - L= .. lK to .. 1 - 3m 174m In-place IR . f< 10 l~~. L (from ~- 10;- Average Drainage trench B400 - L=- concr~te c:l~~r~~~e lL to 4L) 1,8 - 3m 100m box wlth pIpe 11 Tuy~n c6ng N (from 53 Average Drainage trench B400 - L= covers f-- IN to 3N) 1,8 - 3m 53m 12 Tuyen cong M (from 49 Average Drainage trench B400 - L= 1M to 3M) 1,8 - 3m IV Boa T~{J Dong, I---- District Cam -----4­ I Drainage pipe B600 - In-place In-place 1 Route/Tuy~n A (from L=219m; B800 - L=270m; concrete concrete box lA to 34A) BIOOO- L= 138m; 01500- box with with covers L=28m covers 2 IRoute/TuySn IB to 22A) B (from B600 - L = 222 m .., Route/Tuyen C (from I B400- L 283m 1------\- Route/Tuyen -' 4 1C to 18A), i 0 (from -\ B400 - L = 387m; B600- 1 IIDt032A) , L=124m; B800-L=116m I ::--1 Route/Tuy~n E (from \ B400 - L = 181m·, B600-~li ) WE; 9E; J 3? to 8E) . L=116m· I 6 1 ~oute/Tuyen F (from I IF from 22F and 24F B400 L ~ 376~; B600- --1 L=279m; I to 11 F and 17F) 28 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 7 RoutelTuyen G (from - - B400 - L = 57m -­ IG to 4G) 8 Route/Tuyen H (from - - B400 -L 118m; B600­ IH to 12H va 19H) L=222m; 9 Route/Tuyen I (from 1I - - B400 -L = 37m to 2I) ._- 10 Route/Tuyen J (from - ­ B400-L=37m 11 to 7J) '---- -- -- Route/Tuyen K (from - - B400 - L 395m; B600­ 11 1K; 19K; 24K; 27K va L=95m; B800-L=87m; 1----.­ 28K to 16K) B 1000-L=202m 12 Route/Tuy€n L (from - ­ B400 L 72m 1L to 3L) 13 Route/Tuyen M (from - - B400 - L = 187m; D400­ 1M; 12M to 8M) L=47m; D600-L=88m; i-- 14 Route/Tuyen N (from - - B400 - L = 178m; D400­ IN to 6N and 8K) L=49m ----- - - ----~--- 15 Routen'uyen P (ft'om - B400 - L = 178m; B600­ - IP; lOP; 12P to 9P) -- J.-.=223m, 16 RoutelTuyen Q (from - - B400 - L = 138m; B600­ lQ to 9Q and lK) L=93m; 17 Route/Tuyen R (from - - B400 - L = 96m; B600­ lR to 8R) L=129m; I 1 18 Route/Tuyen S (from - ­ I IS; 4S to SA) i r 19 I Route/Tuy~n T (from - -- ---~------ ­ B400- L 195m I I IT; lOT; 13T to 7T ---_. - - - -.---- --­ r- --~--- Til tty Tii, H0(1 H ifP I V Bile,? District Lien Chieu - 29 EIA ofDa Nang Priority Irifrastructure Investment Project Phase 2B - Drainage trench: B400 - Route/Tuy~n E from 300m 1 991 E1 to E34 B600-L=300m, B800­ .- -- L=327m, B1000-L=63m Route/Tuy~n A from - Drainage trench B400­ 2 1212 L=94m, B600-L=706m, Al to A31 B800-L=412m, - ,., Route/Tuy~n C from - Drainage trench B400­ .) 844 L=78m, B600-L=54Im, C1 to C20 c---­ B800-L=225m, Brick trench Route/Tuy~n 0 from - Drainage trench B400­ In-place Reinforce with In-place 4 378 L=35m, B600-L=169m, concrete 01 to 015 concrete reinforce concrete box B800-L=174m, box with - pipe concrete with covers Route/Tuy~n J from J 1 - Drainage trench B400-L=­ covers covers 5 139 97m to J4 ~--- B600-L=41 Ill, -- Route/Tuy~n F from - Drainage trench 6 211 B400 - L= 101m, B600­ F1 to F9 !---­ .­ L=110m, 7 Route/Tuy6n G from 711 - Drainage trench B400 L= G1to G26 337m, B600-L=375m, - .~ r---­ Route/Tuy~n H from - Drainage trench B400-L= 8 73 220m HI to H5 1----­ B600-L= 198m -+~------- -­ LIA An B61l, An Tim, An Hili Bite, District VI SO'n Tru -­ --­ --­ Route/Tuyen A from - Drainage trench B3~L~- 1 Brick trench Al to AI5 241m va B400-L=255m. In-place Route/Tuyen B from . -+­ - -­ . ­ oramage trench B600­ concrete Reinforce with In-place 2 727 concrete reinforce concrete box Bl to B26 L=643m. B800-L:c:: 84m, box with f---- -- pipe concrete with covers ,., Route/Tuyen C from Drainage trench B300 - L= covers covers .) 320 -.­ C1 to C9 - 320m -­ - 30 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B 4 Route/Tuyen D from 238 - Drainage trench B300 - L= - Dl to D7 238m. , 5 Route/Tuyen E from 82 - Drainage trench B300 - L~- El to E3 ~ ~- 82m i 6 Route/Tuyen F from 136 - Drainage trench B300 - Fl to F4 L=136. 7 RoutelTuyen G from Gl to 06 242 - Drainage trench B300 L= 242m. --­ 8 Route/Tuyen H from 163 - Drainage trench B300 - L= !----~ HI to H8 163m 9 Route/Tuyen 1 from II 120 - Drainage trench B300 L= to 14 61m, B400 - L= 59m - - 10 Route/Tuyen K from 48 - Drainage trench B300 - L= Kl to K2 48m t----­ --'--~ -~ -~ i[(ltu v~'c Sub-ward 37,38 All Trung Dong, An VII r------- Hlti Dong, District Son Tra Route/Tuy~n A from I 19 ~ -~ - Drainage trench B600­ I 1 lA to lOA i) L=191m Route/Tuyen B from ~~~ Brick trench - Drainage trench B600­ -­ In-place 2 Reinforce with In-place IB to 19B .J L=345m concrete ~- -­ concrete reinforce concrete box ., Route/Tuyen C from ] .J '9;~ - Drainage trench B400­ box with pIpe concrete with covers lC to 13C .J L=387m covers !---­ covers Route/Tuyen D from 409 - Drainage trench B400­ 4 ID to 17D - -­ L=403m VIII Tho Quang, District Sun Tra ---­ [rhanh Vinh, LQc PhtrO'C -- ­ -~"- - Drainage trench B400 - L= In-place Reinforce Brick trench In-place RoutelTuy~n A from 200m va B600-L=84m, concrete with 1 542 concrete concrete box Al to A18 B800-L= 39m, BI000­ box with reinforce pipe with covers '--­ - I L=219m - ~- covers concrete 31 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Route/Tuy~n B from - Drainage trench B400 - L= covers 2 520 177m, B600-L=72m, B800­ Bl to B22 L= 50m, BIOOO-L=221m 3 Route/Tuy~n C from - Drainage trench B400 - L= Bl to B22 361 171m, B600-L=38m, B800­ L= 86m, B 1000-L=66m 4 Route/Tuyen D from 229 - Drainage trench B400 L= Dl to D9 170m, B600-L=59m, 5 Route/Tllyen E from - Drainage trench B400 - L= El to ES 138 138m ..... ROllte/Tllyen F from ~ 6 440 - Drainage trench B400 ­ Fl to FlO 101m, B600-L=110m, 7 ROllte/Tllyen 0 from 232 - Drainage trench B400 L= 01 to 012 137m, B600-L=9Sm, 8 ROllte/Tuyen H from HI to lIS 73 - Drainage trench B400 - L= 73m 9 Route/Tuyen J from J 1 - Drainage trench B400 - L= to J6 IS7 -_..­ 157m 10 Route/Tuyen I from I I - Drainage trench B600 L= to IS 120 120m .­ Route/Tuyen K from - Drainage trench B400 ­ 11 61 KI to K4 61m 12 Route/Tuy~n N from - Drainage trench B400 . L NI to NIO 307 109m, B600-L=99m, B800­ L= 99m, 13 Route/Tuyen M from 178 - Drainage trench B400 ~ L= MI to M7 89m, B600-L=89m, r-- ---­ -­ Route/Tuy~n Ofro111 . - Drainage trench B400 14 92 01 to 03 92111 15 Route/Tuy~n P from - Drainage trench B400 ~ L= PI to P9 242 38m, B600-L=8Sm, B800­ L= 119m, 32 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B - 16 Route/Tuyen Q from 239 - Drainage trench B600­ -- Ql to Q12 L=-176m, B800-L= 63m, Route/Tuy~n U from - Drainage trench B400 - L= 17 606 348m; B600­ lU -25U f--­ 120m;B800 L;: 138m Route/Tuy@n V from - Drainage trench B400 - L= 18 501 203m;B600 ­ IV -19V I--­ L=220m;B800 -L=78m - Drainage trench B400 L= RoutelTuy@n Z from 992m;B600 L= 19 1586 lZ-41Z 264m;B800 - L 11m; - B1000 L=319m Tam Thu3n, District IX 625 614 I----~ Thanh Khe -- --~--- Alley 147 Tr:.ln Cao Average Drainage trench B400 - L= 1 80 1----­ Van Str. -- 1,8 - 2m - - 78m Alley 153 Tr~n Cao Average Drainage trench B400 2 80 Van Str. 1,8 - 2m 78m 1---­ -- - --- ,., Alley 157 Tn1n Cao Average Drainage trench B400 - L= In-place .J 80 Reinforce Brick trench Van Str. 1,6 1,8m 78m concrete -- --~ concrete with In-place Alley 159 Tran Cao Average Drainage trench B400 - L= box with 4 80 ptpe reinforce concrete box 1---­ Van Str. 1,6- 1,8m 78m covers concrete with covers Alley 165 Tran Cao Average Drainage trench B400 ~~ 5 80 covers I--­ Van Str. 1,8m 78m Alley 173Tran Cao Average 2 Drainage trench B400 L= 6 80 - Van Str. 2,5m 78m Alley 179 1:;~n Cao Average Drainage trench B400 - L= 7 145 -. Van Str. '-----­ t,8 - 2m 146m i ---- Source: Report a/Construction Investment Projects ~ Componenf A (phase 2), April 2011 33 , PhI} Il}c 3-2 Quy~t djnh thu h6i dit TXLNT Hba Xuan-l fJY HAN NH.AN DAN CONG HOA xA HOI CUU NGHiA YIlT NAM THANH PHO DA NANG DQC I~p - TV do - H1}nh phtic S6: 334Lf IQD-UBND Dil NJng. ngay .2tJ. thang 4 niim 20lT QuYETDINH V~ vi~c thu h6i d5.t) giao cho SO- Giao thong V~n tii sir dlJng d~ dAu ttt xiy d'lng Tr~m xU'ly ntrrrc thai Hoa Xuan UY BAN NHAN DAN THANH PHO DA NANG Can cu Lu{it T6 chuc H{)i ddng nhan dan va Uy ban nhan dan ngay 26 thang 11 nam 2003; Can eli Lu~t f)~t (lai ngay 26 thang ] 1 nam 2003; Can eli Nghi djnh sa 18112004lND-CP ngay 29 thang 10 nam 2004 clia Chinh phil v~ thi hanh Lu~t Dfrt dai nam 2003; Can eu Quy~t dinh sa 1800/QD-UBND ngay 28 thang 02 nam 2008 cUa Chu tich UBND thanh pha Da Ning v€' vi~e phe duy~t dv an dfm tu xay d\1'f1g cong trinh dlJ an diu tu ccr sa h~ ting uu tien thanh pha Ba NAng; Can cu Quy~t dinh s6 8056/Qf)-UBND ngay 20 thang 10 nam 2010 coo UBND thanh ph6 Da NAng ve vj~c thu hdi dAt, giao cho Sa Xay dlJDg quan Jy su d\ll1g d~ d~u tu xay d~g h~ thang h~ tkng ky thu~t Khu Lien h9P The dl)c Th~ thaD. Boa Xuan, Tr?IU xu ly nlI<1c thai Hoa Xmln va Khu t-UBND ngay 15 thang 10 l1am 2010 cua Chu tjch UBND thimh ph6 Da N§ng v~ vi~c phe duy~t SO' dd ranh gi&i sfr d\Ulg d&t di6u chinh dl,f an Tr?IU xu 1y mrac thai Boa Xuiin; Thvc hien chu tnrcmg eua UBND thimh ph6 Da Ngng ~i nOi dung Cong viin 56 1115/UBND- BBGT ngay 07 tbang 3 nam 2011 VIv tri6n khai cong rae den bu giai t6a t~i khu V\fC xay dJ,mg h~ng m\lc Tr~ xu ly nu&c thai Hoa Xuan; Thea d~ nghi cua Giinn dac Sa Iai nguyen va Moi tn/emg t~i TiJ trinh s& 292lTTr-S1NMT ngay 13 thang 4 nam 2011, QUYET DJNH: f)i~u 1. Thu hdi khu dAt co di~n tfch: 220.414m 2 t{li phuiJng Hoa Xu8n, qu~ C§m L~, phin di~ tich dAt miy nam trang dv an Khu Lien hgp ThS dl,1c Th8 thao Hba Xuan, Tr~ xu 19 nu6c thai H6a Xuan va Khu tai dinh cu. Giao toan bQ di~n tich dAt tren cho Sa Giao thong V~n tai sir dl,mg d~ d§u tu x§y d1,IIl.g T~m xu ly nu6'c thai Hea XuarL Vi tri, ranh giai khu Vl!C thu hdi dAt, giao dAt do Sa Tai nguyen va Moi truang xac l~p t\:ii ban ve kern theo Quy~t djnh mly. DieD 2. Sa Giao thong V?n tai co trach nhi~m: - Ph6i hgp vai H{li dbng bdi thuang thj~t h9.i, giai ph6ng m~t bAng titn hanh kj~m dinh, b6i thuiJng thi~t h~i v6 ddt, nha cua, v~t kien truc, cay c6i, hoa mao ... (n~u co) tren khu ddt dugc giaa (t?i DiSu 1) eha chti Slr dl,lng dill hqp phap theo dung quy dinh. 13 - Sli dl,mg dftt dUng vi tri, diQn tich, ml,lc dich dm..Yc giao (t;t.i Dieu 1), khong hun anh huang tai m6i truang va cac chu su dl,lng dat Ian c~. - DAu tu xay dr.mg Tr~ xli ly nu,..----_ o· .. 1..RUN.G T~V~:L~':,. IAM"'~~~/ ---:;: :) . _ - r",: - . : ,? ~~.DWJiv2 Au CONG HOA xi\. HOI CHI) NGHiA VIE;T r DOCL~P-TVDO-H~NHPHUC Trl,1 sa chinh. 1}.')9 Do Dt1\' Dl,lc. Tit Li~m, Hi" OT: 0..J-.22609559 F:.n: OL\1'i..J-J..J-91 .. VPMN J5!!55C L~ V:1n Sy, Q.3, Tp.HeYi DT. (l,~ 3724)7:!X Fax'il8,]72-lSQ.:.D *** PTNI: Km9+200. QL22. Tp.HCM: I'1'N2: S6 t. Xu 1<) Truung Scm. Di An. BD KET QuA PHAN TieH MAU KHi (TIEU D£/ AN: KDC TNT) S6:3291 . )I A D Un VI yeu cau: CONG TY CO PHA.N sAl GON THANG LONG Dia eM: 32 Nguy~n TrQng LQi, PhuOng 4, Qu~n Tan Binh, Tp HeM Quan trtic trong ngay 22,23,24,2511112010. Can b{J do dg,c, ltiy mau: Trftn Van Suc, Duong Ng9c Hieu. Cae vi trf quan trtic. Khu TNT Khu dan cu s6 2 Nguy~n Tri Phuong, P. Hoa Cu6ng BAc, Q. Hili Chau K3-1: Trang hem nho tren duang Hoang ThUc Tram (cach dl1ang Hoang Thuc Tram khoang 200m). K3-2: Trang hem nho, dl1ang Le Thanh Nghi (each duang Le Thanh Nghi khoang 100m). Khu TNT Tam Thu~n, P. Tam Thu~n, Q. Thanh Khe; K4-1: Trong ki~t 140, duang TrAn Cao Van. K4-2: Trong ki~t nho, duang TrAn Cao Van, t6 35, KDC Thu~n Thanh C. Chi tieu do d~c va phan tich Ky hi~u miu 6n tieh Byi 10' liing N02 S02 CO NH3 J phan J J 3 (J.1g/m ) (J.1g/m ) (J.1g/m ) (J.1g/m 3 ) (J.1g1m ) (dBA) K3-1 I 140 57,8 47 55 1480 <3 i KJ-2 I 120 55,2 44 58 1470 <3 K4-1 140 59,9 50 60 1500 4 K4-2 150 62,5 51 59 1540 <3 i Ghi chu: - Kit qua chi co giti trj tn}n mau thit tqi thai {liim ao. Tp. HeM, ngay 30 tMng 11 nam 2010 CONG HOA XA HOI CHU NGHiA VIET ~ DOCL~P-TVDO-H~NHPHUC Trt,t sa chinh: 554 Db Dtrt.: DUt.:, Til LJem, tiN Dr 04 ~~6n!.i55t} hn:: 04,.'\7S4,l4!)1 VPMN 35 !155C Lc V,'in Sy. Q], Tp HeM DT. os Jn4572~ Fa,\;: OHJ72459Jl *** :' ! PTN1: Km9t200, QL.22, Tp.HCM: PTN2: S6 I, Xu III Tnn'mg San, Dr An, BD KET QuA PHAN TicH MAU KHi (TIEU Dl./ AN: KDC TNT) 86:3292 Dun vi yeu cau: CONG TY CO PHA.N SAl GON THANG LONG Dia e1tl: 32 Nguy€n TrQng L{li, PhuOng 4, Qu~n Tan Hinh, Tp HeM Quan tr&c trong ngay 22, 23,24,2511112010. Can bp i/o i/(lC, lily maw Tr&n Van Suc, Duang NgQc Hi~u. Cac vi trl quail tr&c. Khu TNT ThQ Quang, P. ThQ Quang, Q. San Tn} K5-1: Trong ki~t 54 dUOng Tr&n Quang Khai. K5-2: Ki~t nh6 dUOng Nguy~n Phan Vinh (T6 12, phuOng ThQ Quang). Khu TNT An Hai Dong, P. An Hai Dong, Q. San Tn't; K6-1: Duong nQi bQ dt dUOng Luang Th~ Vinh (cach duong Luang The Vinh khoang 100m). K6-2: Trong ki~t 59, dUOng Le Hil'u Trac. Chi tH~u do d~c va phin tich Ky hi~u mAu On t1ch Bl;li 10' IU'ng NO z SOz CO NHJ phin (J.1g1m 3) (dBA) (J.1g/m 3) (J.1g/m 3 ) (J.1g/m 3 ) (J!g1m J ) KS-l 130 60,1 35 52 1370 <3 KS-2 120 59,2 31 48 1380 <3 K6-1 150 61,3 44 57 1420 6 K6-2 140 64,0 I i Glti e1,U: - Kit qua chi co gia trj tren mau thit tf,li thui aiJm ao. Tp. HeM, ngay 30 thang II nam 20U D~i di~n t6 phin tich . \ Ph6 giam doc Trung tam t~t I J~l,el' ~hi r,lu, Patt CONG HOA xA HOI CHU NGHiA VIET ~ DOC L~P - TV DO - H~NH PHDe Tru weh/nh· 559 Do 01..1\; flu.;, Ttl Llcm, HN DT"!j; OH.:I7Z459.B *** PTNI; Km9-200, QL.2~, Tp HC!VI; PTN2; So 1, Xu 1(1 Truimg SU'TI, Di An, BD J:. ? A., ::t' , KET QUA PHAN TICH MAU KHI (NANG eAp TUYEN eONG THoAT NlfOe MUA B52, NUOe THAI 853 - DA NANG) S6: 4071c Ddn viyeucdu: CONG TY CO PHAN sAl GON THANG LONG Dia eM: 32 Nguy~n Tr(;mg LQi, PhuOng 4, Qu~n Tan Sinh, Tp HeM Quan triie trong ngay 11,12/01/2011. Can h? ilo ill/e, My rnau: TrAn Trung Vi~t, Le Dinh Nhllt. Cde vi trl quan triie: K8: Khu vlJe H6 khu dan eu Trung Nghia (16°3' 50,82" N; t 08°1 0' 18,23" E) K9: Khu VIJC gAn DIJ an Nha may XLNT Hoa Xuan (15°59'5,15" N; 108°13'43" E) KI0: Khu V\TC nga tu Ton Duc Th~ng va B~c Son (16°3'33,61" N; 108°10'31,02" E) Kll: Khu vlJe giao Ton Due Th~ng va Ngo Thi Nh~m (16°4'9,03" N; 108°9'7,37" E) K12: Khu V\TC kenh Hoa Minh (16°4'29,28" N; 108°10'0,59" E) K~t qua Ky hi~u miu Byi II CHU NGHiA VI~T N, ~ ."".. '" ~"'"" VPM:.I ,351155C U ,"",-", V'n 5y. Q.3. Tp.HCM "' ."~'" ,,,,,. "'''''' Dr: OR.171457!a Fax,OIU72459.1.I DOC L~P • TtJ 00 . H~NH PHUC *** PTNI: Km9+200, QL22. Tp.HCM. PTN2: 561, Xa 10 TruOng S.m. Di An, BD J{ "., A ' ~ , KET QUA PHAN TICH MAD KHI (Dl! AN XD T~M XU LY NUOe THAI HOA XUAN) S6: 4720a J)O'n Vi y€u cliu: CONG TY CO PHAN PHAT TRlEN H~ TANG THANG LONG J)ia chi: Gin 1001, Toa nha 101 Lcmg H(I, D6ng Da, Ha N(>i Ngay Idy mau: 30/0312011. Gin hp do d(Jc, Idy mau: Trdn Trung Vi~t, Le Dinh Nh~t. Cac vi tri quan triic: K13: vi tri d~u huang gi6 (Phfa Tay Bile giap ranh tr~m XL) K14: vi tri eu6i huang gi6 (Phia Dong Nam -phfa ben kia ba song Vinh f)i~n) K15: vi trf trong khu d~t dlJ an KSt qua Kj hi~u miu . Byi 10' hing On tich phan N02 S02 eo ()lg/mJ) (dBA) ()lg/mJ) ()lg/mJ) ()lg/mJ) K13 160 60,5 60 79 1550 K14 120 58,0 50 61 1470 K15 130 61,5 64 80 1660 I + Ghi eI,u: - Kit qua chi co giG Ir! tren mJu Ihit I(li thai tliim tlo. Ngay 07 thang 04 ntim 2011 D~i di~o t6 philo tieh,. KS. DU'O'Ilg CONG HOA xA H(n CHD NGHiA VI~T N. ~ ,~ ,~, •• VPMN "'''''"'". ,n". '" : 351155(' Le V;,1n S9, Q:\, Tp HC~1 ~'"'_'" DT: OR J724572:i h •. ""m, F;}x; m:t:l72459:n DOC L~P • TIJ DO • H~NH PHUC *** !'TN!: Km9+200, QL.22. Tp.HC~; PTN2: SO' I. Xa Ii) TMrog Slm, Dl An. BD KET QUA PHAN TicH MAU KHi (Dl/ AN XD T~M XU L Y NUOC THAI LIEN CHIEU) S6:4720b DUn vi yeu cdu: CONG TY CO PHAN PHA.T TRIEN H~ TANG THANG LONG Dia chi: Ciin 1001, Tda nhii 101 Limg Ht;I, D6ng Da, Hii N{ji Ngay lliy mau: 3010312011. Can bp do d(lC, lay mau: Trful Trung Vi~t, Le Blnh Nhk Cae vi trl quan trdc: K16: vi tri d~u huO'ng gi6 (Phia H.y B~e gi Quang, P. ThQ Quang, Q, Son Tra NM 5-1: 16°5'59,5"N; 108°15'22,8"E NM 5-2: 16°5'51,3"N; 108°15'14,9"E I Ki/qua I PlruO'ng phdp TT Chi tiiu phlin tic" Ilrk nglliim NM 5-1 NM 5-2 I I pH I 6,81 6,84 TCYN 6492:1999 2 TSS(mg/l) I 15,50 11,50 SMEWW 2540 0-2005 I ! I i I 3 COD (mg/I) 16 14 I SMEWW 52208-2005 I I SMEWW 4500-0-G ­ 4 DO (mg/J) 6,5 I 6,7 I 2005 5 NH/(mg/I) 0,27 0,22 SMEWW 4500-2005 I 6 NOl - (mg/I) 0,20 0,14 SME WW 4500-2005 I I 7 N02-(mg/l) i, <0,01 0,02 SME WW 4500-2005 8 POl-(mg/l) 0,05 <0,01 SMEWW 4500-2005 I Tong Coliforms 9 2100 1900 SMEWW 922 J 8-2005 (MPNII OOml) IO Diu roO' (mg/l) 0,36 0,20 SMEWW 5520 8-2005 I 11 Fe (mg/J) 2,02 2,06 I lIS KO 102: 1998 I * Giti cMi: - Kit qua chi co giti trj tren mdu thl; TP. HeM ngay 30 thOng 11 nom 201t Dai dieD t6 ph aD tich""'\ . . i' CONG HOA xA HOI CHil NGHiA VI:E:T N DOCL~P-TVDO-H~NHPHUC *** PTNI: Km9+200, QL22, Tp.HCM: f'TN2: ss I, Xa 1<) TfU'(mg S,m, Of An, BD KET QuA PHAN TicH Nudc MI). T (Tn~U DtJ AN: KDC TNT) S6:3295 DUll viyeu cOu: CONG TV CO PHA.N SAl GON THANG LONG Dia chi: 32 Nguy~n TrQ'ng LQi, PhuOng 4, Qu~n n,n Binh, Tp HeM Ngay My m8u: 22, 23, 24, 2511112010. Cdc vi trllay m8u: - NUcJe song Han khu VI!C etia xli tit Khu TNT An Hai B~e, P. An Hlii B~c, Q. Son Tn) ra song Hiin NM 7-1: 16°4'31,I"N; 108°13'42,3"E NM 7-2: 16°4'37,5"N; 108°13'42,4"E Kit qua Plurung phap TT Chi lieu phl1n lielt tllli- nghifnt NM7-\ NM7-2 I pH 6,51 6,52 TCVN 6492: 1999 : I I 2 TSS (mg/I) 50,50 52 SMEWW 2540 D-2005 i I 3 COD (mg/I) 28 36 SMEWW 5220B-2005 I SMEWW 4500-0-0 ­ 4 DO (mg/I) 4,9 4,7 I 2005 ! 5 NH/(mg/I) I 0,47 0,56 I SMEWW 4500-2005 I I I 6 NOJ-(mg/I) I 0,09 0,17 SMEWW 4500-2005 7 N0 2-(mg/l) <0,01 <0,01 SMEWW 4500-2005 8 POl-(mg/l) 0,23 0,37 SMEWW 4500-2005 I 9 Tong Conforms (MPNII DOml) 3200 2400 I SMEWW 92218-2005 -­ to Diu mO' (mg/I) 0,2 I 0,22 SMEWW 5520 8-2005 II Fe (mg/I) 1,98 3,02 i I JIS K0102:1998 * Ghi eM: - Kit qua chi co gia tri tren mJu thi! TP. HeM ngay 30 thang 1/ nam 20/0 D~i difD t6 phao Uch /v Ph6 giam doc Truog tam r~ ~ tffjllJlin r;/wy riJiim eONG HOA xA HOI em) NGHiA VIET N . Doe L~P - DO - H~NH PHue TV "** PTNl: Km9+200. QL22, Tp.HCM; PTN2: 56 L Xa 19 Tnrong San. OJ An, SD KET QuA PHAN TicH NUO'C M~ T (TIEU DV AN: KDC TNT) S6:3296 DUll vjyiu eliu: CONG TY CO PHA.N SAl GON THANG LONG Dja clli: 32 Nguy8n Tr9ng LQi, PhuOng 4, Qu~n Tan Binh, Tp HeM Ngay lay m5.u: 22, 23, 24, 25/1112010. Cae vi trf I~y m§u; - Nuac song Khu TNT Thuy Tu, P. Hoa Hi~p B~c, Q. Lien Chi~u NM 8-1: 16°7'3,2"N; I 08°6'57,4"E NM 8-2: 16°7'20,4''N; 108°7'17,9"E I Kit qua I Plllrl1ng phap I 11 Chi tieu plrOn tlch , thir nglli?m ! I NM8-1 NM 8-2 I ! ! I I pH 6,56 6,53 TCYN 6492: 1999 I 2 TSS (mg/I) i 20,50 I 16 SMEWW 2540 0-2005 : 3 COD (mg/l) 18 21 SMEWW 5220B-2005 4 DO (mg/I) 5, I 4,9 I SMEWW 4500-0-G - ! 2005 5 NH/(mg/l) 0,01 0,01 SMEWW 4500-2005 I 6 NOJ -(mg/I) 0,20 0,21 SMEWW 4500-2005 I 7 NO£(mg/l) <0,01 <0,01 SMEWW 4500-2005 POl-(mg/l) , ! 8 0,11 0,07 SMEWW 4500-2005 i I . Tang Coliforrns 9 320 190 SMEWW 9221B-2005 (MPN/IOOml) 10 Diu rna (mg/l) 0,24 <0,2 SMEWW 5520 B-2005 11 Fe (mg/I) 1,09 1,06 JIS KO I02: 1998 I * GI,; c/,U: - Kit qua chi co gia tr/ Iren mdu Ihit TP. HeM ngay 30 Ihimg 11 nam 201 C D~i di~n t6 phan tich)1 Ph6 giam doc Trung tam . . CONG HOA xA HOI CHil NGHiA VIET N ~ Tr~,,;dunh . ' ' . , ' . DOC L~P • DO • H~NH PHUC TlJ tD;C ;'-#~.< •• VPMN 55" Do D"" Due.Tir~;~m. HN J51155C Le Van Sy. Q 3. Tp,HCM DT·04.l!609559 D1': 08 .171·1572g Fu' {).j 1J543491 FlX 08.37145933 *** !'TNl: Km9+200. QL22. Tp,HC).l; PTN2: S6 I. Xa 1(> Truung Sun. Dl An. BD KET QuA PHAN TicH NU(JC M~T (Dl/ AN XD T~M xi) LV NUOC THAI HOA XUAN') sci: 4721a Dun vi yeu cliu: CONG TV CO PHAN PHAT TRIEN H~ TANG THANG LONG Dfa chi: Can 1001. Toa nha 101 Lang Hg Dang Da. Ha Nlji NgayJ8ymau: 301312011. Cac vi tri lay mau: - NM3: Di~m gifra 2 cua xa, each ba phai 50m; - NM4: Di~m gifra 2 cua xa, gifra dong; - NM6: Di~m gifra 2 eua xci, each ba trai 50m; - NM9: each cua xii 2 khoang 500m v~ phia song Qua Giang-HQi An; . NMlO: each eua xii 1 khoang 500 m v~ phia Song Han. /-:­ Chi tieu phlin tich NM3 NM4 xit qua NM6 NM9 NMIO PhU'l1ltg phtip thu-nghiim I pH 6,93 6,87 7,03 7,32 7,16 TCVN 6492: 1999 i , 2 TSS (mg/l) 20 33 34 I 35 40 SMEWW 2540 0-2005 ~., 3 COD (mg/I) 7 6 .~ 7 9 SMEWW 5220B·2005 4 BODs (mg/I) 5 4 6 i - - SMEWW 5210B-2005 5 DO (mg/I) 5,26 5,53 5,66 5,73 5,69 SMEWW 4500.0.C-2005 I 6 NH/ (mg/I) 0,26 0,35 0,25 0,37 0,28 SMEWW 4500-2005 7 NOJ-(mg/I) 0,01 0,12 0,08 0,09 0,10 SMEWW 4500-2005 8 N02-(mg/l) <0,01 <0,01 <0,01 <0,01 <0,01 SMEWW 4500-2005 9 PO/-(mgll) 0,08 0,06 0,08 0,05 0,09 SMEWW 4500-2005 IO Cr(mg/l) 164 216 214 217 301 SMEWW 4500-2005 I II Fe (mg/I) 0,20 0,15 0,18 0,23 0,22 JIS K0102:1998 Tong Coliforms 12 390 360 270 210 440 SMEWW 9221B-2005 (MPN/I00ml) I 13 Diu miY (mg/I) I <0,01 I <0,01 <0,01 <0,01 <0,01 SMEWW 5520B-2005 * Ghi chilo' - Kit qua chi co gia lrj lren mJu thu Ngay 07 thang 04 nam 2011 D~i di~n to philn tic~ Ph6 giam dOC Trung tam ~ ~,~tin '0hi u«;j fJJu1J~n CONG HOA xA HOI CHi; NGHiA VItT N ~ ".W.'M"'~~C..'''''~'' m."~'" "".",,,,,, ,.. VPMN 3,I155C U Vln sr. Q.3. Tp.HC:VI DT: ()8J724572~ Fa." ()8.372459JJ DOC L~P • TlJ DO • H~NH PHUC *** PT!'II: Km9+200. QL.22, Tp.HCM; PTN2: So' I. Xa J(\ TruUng San. Dr An. BD KET QuA PHAN TicH NUOC ML).T (Dl)' AN XD T~M XU L YNU6'C THAI LIEN CHIEU) Sd: 4721b DO'n vj yiu eflU: CONG TV CO PRAN PRAT TRIEN R~ TANG TRANG LONG Dja eM: Can 1001, Toa nhll 101 Lang Hg., Ddng Da, Hll N(Ji Ngay liiy m8u: 301312011. Cae vi Ir/lay mau: • NM 11: vi tri t<;li khu V1,l'C cira xci ra muong thoat nuCtc thai cua KCN Hoa Khanh; • NM 12: vi tri t<;li muong chay tnm cua nuCtc thai KCN Hoa Khanh n6i ra song Cu De, cach ranh phia Tay Nam Tr~m XLNT Lien Chi~u khoang 300m; • NMI3: Cach ber phai 20m thu9c nhanh song Cu De vi tri gifra Quang Nguy~n T~t Thanh va Quang Nguy~r Ba PMt; · NM 14: gifradong nMnh song Cu De vi tri gifra Quang Nguy~n T~t Thanh va Quang Nguyen Ba PMt; · NM 15: Cach ber trai 20m thu9c nhanh song Cu De vi tri gifra Quang Nguy~n T~t Thanh va Quang Nguyen PMt; · NM 16: NuCtC bi~n, phia ben kia tuy~n c6ng ngan m~ n6i v6i song Cu De ra bi~n . Kit qua Chi tiiu Phrrung phap TT phlin licll NMll NM12 NM13 NM14 NMlSI NM16! l/til' nghiim 1 pH 12,4 9,53 7,62 6,55 6,01 6,31 TCVN 6492: 1999 2 TSS (mg/I) 46 52 67 17 19 22 SMEWW 2540 D-2005 3 COD (mg/I) 169 125 86 40 20 22 SMEWW 5220C-2005 4 BODs (mg/l) . - 20 15 10 - SMEWW 521 OB-2005 5 DO (mg/I) 2,30 2,16 3,40 5,20 5,30 5,60 SMEWW 4500.0.C·2005 6 NH/(mg/l) 2,13 1,47 1,28 0,87 0,86 0,84 SMEWW 4500·2005 7 NOJ-(mg/l) 0,26 0,20 0,20 0,15 0,14 0,17 SMEWW 4500·2005 8 N0 2-(mg/I) <0,01 <0,01 <0,01 <0,01 <0,01 <0,01 SMEWW 4500-2005 9 pot (mg/l) 1,89 0,94 0,92 0,10 0,09 0,07 SMEWW 4500·2005 I 10 Cr(mg/l) 602 260 223 212 600 650 SMEWW 4500-2005 II Fe (mg/l) 0,22 0,36 0,31 0,34 0,29 0,32 JIS KOI 02: 1998 12 Pb (mg/I) 0,212 0,200 0,070 ! <0,005 <0,005 <0,005 JIS KO 102: 1998 13 Cu (mg/I) 0,110 0,080 J 0,070 <0,002 <0,002 <0,002 I JIS KO 102: 1998 , 14 Zn (mg/I) <0,001 <0,001 <0,001 . <0,00 I <0,001 <0,001 I JIS KOI02:1998 I 15 As (mg/I) 0,025 0,020 I 0,010 <0,005 <0,005 <0,005 ; JIS K0102:1998 ! Tong Coliforms 16 (MPN/IOOml) II *10 6 29*10 5 121 *10 5 16* I 03 95* 10 2 I 75* I 0 1 2 SMEWW 9221 B-2005 I 17 Diu miY (mg/I) 1,60 0,93 0,61 0,02 <0,01 <0,01 I SMEWW 5520B-2005 I * Ghi cluj: - Kit qua chi co gta Irj Iren mJu Ihit Ngay 07 thang 04 niim 2011 D~i di~n t6 phan ticty CONG HOA xA HOI CHl] NGHIA VI~T NI DOC L~P - TV DO - HANH PHUC I'TNI: Km9+2(~). QL22. TrHC~1: PTNZ: 56 I. X.I 10 Trutrng Scm. [)j An. flO KET QUA PHAN TicH Nl1ac M~ T (TUYEN DUONG VANH DAr PHIA NAM DA NANG) S6: 4073 DUn vjyeu cliu: CONG TV CO PHAN sAl GON THANG LONG Dja chi: 32 Nguy8n Trc,mg LQi, PhuOng 4, Qu~n Tan Binh, Tp HeM Ngay liiy mau: 111112011. Cac vi trlldy mau: - NMI: Nuoc song Vinh f)j~n (15°58'14,1" N; 108°12'59,8" E) - NM2: Nuoc song Vinh Di~n (15°58' 1,05" N; 108°12'40,3" E) KBtquil I Plllrung phdp IT Chi tieu phiin tkh thifnghirm NMI NM2 I pH 6,25 6,19 TCVN 6492: 1999 I 2 TSS (mgll) 35,50 I 37 SMEWW 2540 D-2005 I 3 COD (mgll) 26 I 25 i SMEWW 52208-2005 I 4 Fe (mgll) <0,04 <0,04 I I lIS KO 102: 1998 5 NH4+ (mgll) 0,05 0,04 SMEWW 4500-2005 6 N03-(mgll) 0,34 0,33 SMEWW 4500-2005 - 7 NOz- (mgll) <0,01 <0,01 SMEWW 4500-2005 8 POl(mgll) 0,02 0,02 SMEWW 4500-2005 9 Tong Coliforms (MPN/IOOml) 1600 1500 SMEWW 92218-2005 i * Glli chu: - Kit qua chi co gia tri Iren mdu Iht'r TP. HeM ngay 20 thGng 01 niim 2011 Dai dien t6 philn tich .. I'~ I 4~ . <::-.::::~- '6~'n ~Ir! Jlj fjuyMt. '-'­ eONG HOA xA HOI eHU NGHiA VIET N . Doe LA.P • DO - H~NH PHDe TV ** * PT!III: Km9+200, QL22, Tp HC\;(; PT~2: 56 I, Xa 10 Tmt'mg S(m, Dl An. BD KET QuA PHAN TicH S6:3297 DUll viyeu Call: CONG TY CO PHAN sAl GON TH.ANG LONG Dja cM: 32 Nguy~n TrQng LQi, Phuong 4, Qu(i,n Tan Binh, Tp HCM Ngay iJy mdu: 22-25/1112010. Lop; mdu: NUdc ngam Vi Iri quan trdc: Khu TNT Binh Hien, p, Binh Hien, Q. Hili CMu; N I-I: NN hQ ong Phan Quang, PhuOng Binh Hien N 1-2: NN hI) ba Truang Thj Keo, PhuOng Binh Hien Khu TNT Binh Thu(i,n, P. Binh Thu(i,n, Q. Hili ehiiu N2-1: NN hQ ba Huynh Thi Kim Kha, Phuong Binh Thu~n N2-2: NN hQ ong Nguy~n Vi, Phuong Blnh Thu(in Cllitieu Ten milu Phuung p/uip Sit phlin tich th,rnghifm NI-l NI-2 N2-1 N2-2 I pH ! 6,86 6,85 6,71 6,87 TCVN 6492: 1999 2 Dc) ctlng (mg/I) 154 122 186 215 TCVN 2672:78 3 CODMn (mg/I) 2 2 3 4 JIS KOI02: 1998 4 Fe (mgll) <0,02 <0,02 <0,02 <0,02 JIS KO 102: 1998 5 N-NH4 + (mg/I) 4,37 4,02 9,03 J0,31 SMEWW 4500-2005 I 6 N-NOJ- (mg/J) <0,004 0,04 1,91 2,23 SMEWW 4500-2005 7 Pb (mg/I) 0,052 0,060 0,049 0,073 JIS K0102:1998 8 Cr(mgll) 140 135 169 192 SMEWW 4500-2005 l,9 * Ghl chu. Coliform (MPN/IOOml) , ~ . .. Ket qua chi co gla tq tren mau thu. ~ 19 ~ 12 13 16 SMEWW 922lB-2005 j Tp.HCM, ngay 30 thang II nam 20 I 0 D~i di~n t6 phan tich A, . -z.­ / <--:----­ eONG HOA xA HOI eHU NGHiA VltT N DOe L~P . Ttl DO • H~NH PHue *** PTNI: Km9+200, QL.22, TpHCM; PTN2: S6 I. Xa 1<) TruOng Son, D1 An, BD z. ? A , KET QUA PHAN TICH S6:3298 DUn viyeu ellU: CONG TV CO PHAN sAl GON THANG LONG Diu chi: 32 Nguyen TrQng LQi, Phuong 4, Qu~n Tan Binh, Tp HCM Ngiiy lay mo.u: 22-25/11/2010. LOfJi mo.u: NuUc ngam Vi tri quan trtic: Khu TNT Khu dan cu sf> 2 Nguyen Tri Phuong, P. Hba CUOng B~c, Q. Hili Chau N3-1: NN hQ ong Tao Vien, KDC s6 2, PhuOng Hba CUOng BAc N3-2: NN hQ ong Nguyen Gi6i, P Hba CUOng B!c Khu TNT Tam Thu~n, P. Tam Thu~n, Q. Thanh Khe; N4-1: NN hQ ba Nguy~n Thj Hue, P Tam Thu~n N4-2: NN hQ Dinh Hili Tam, P Tam Thu~n Ten miu r-.. -.-~'--'- Cltitieu r I Sa phii,n tiell i N3-1 I N3-2 I N4-1 N4-2 Phudng phdp th"nghilm I pH 6,74 6,87 7,53 7,60 TCVN 6492: 1999 2 I DO c.rng (mg/!) 90 86 207 187 TCVN 2672:78 CODMn (mg/I) 2 4 2 3 I lIS KO I02: 1998 3 4 Fe (mg/I) 0,03 <0,02 0,02 0,02 liS KO I 02: 1998 5 N-NH/ (mg/I) 0,65 0,56 6,57 2,98 SMEWW 4500-2005 6 N-NOJ- (mg/I) 2,01 2,25 0,013 0,010 SMEWW 4500-2005 ! I I 7 Pb (mg/I) 0,029 0,065 0,071 0,053 lIS K0102: 1998 8 Cr{mg/I) 51 85 133,6 102,7 SMEWW 4500-2005 9 Coliform (MPNIIOOml) I1 15 16 14 I SMEWW 9221 B·2005 * Ghl chu: , . , "­ . '" I Ket qua chi co gla tTl tren mau thu. I Tp.HCM, ngay 30 thang 11 nam 20 I 0 D~i di~n to phan tict~\;1 Ph6 giam doc Trung tam CONG HOA xA HOI CHir NGHIA VIE;T N DOC L~P - TIJ DO - H~NH PHVC * ** PTNl; Km9+200, QL.22. Tp.HCM; 1'1']';2; S6 I. Xa 1(\ Truimg Scm. Dl An. BD X. ? A , KET QUA PHAN TICH s6: 3299 DUn vjy€u cau: CONG TV CO PHAN SAl GON THANG LONG Dia chi: 32 Nguy~n TrQng LQi, Phuong 4, Qu~n Tan Binh, Tp HCM Ngay My mau: 22-2511112010. Lot}i mau: NU'uc ngam Vi tri quan trtic: Khu TNT Th9 Quang, P. Th9 Quang, Q. Son Tra N 5-1: NN hQ dan Nguyen Viln Bieu, P Th9 Quang N 5-2: NN h9 ong Huynh Van Binh, P ThQ Quang Khu TNT An Hai Dong, P. An Hai Dong, Q. Son Tra; N 6-1: NN hQ cng Nguy~n Nho Luong, P An Hiii Dong N 6-2: NN h9 ong Tran Huu Lien, PAn Hai Dong Chiti€u I I Ten mAo PIIU:Ullg pluip Stt phiin tlch thii: tlghi~m NS-l NS-2 I N6-1 I i N6-2 , pH 6,45 6,35 7,72 I 7,54 TCVN 6492: 1999 .~- 1 2 DC) cling (mg/I) 43 40 168 170 TCYN 2672:78 3 COD Mn (mg/I) 0 0 2 4 JIS K0102: 1998 4 Fe (mg/I) <0,02 <0,02 <0,02 <0,02 JIS KO 102: 1998 5 N-NH/ (mg/I) <0,01 0,02 12,48 9,57 SMEWW 4500-2005 I 6 N-NOj- (mg/I) 0,02 0,02 0,84 0,56 SMEWW 4500-2005 I I I 7 Pb (mg/I) 0,045 i 0,050 0,053 I 0,049 JIS K0102:1998 8 Cr(mg/I) 25 I I 24 139 125 SMEWW 4500-2005 9 Coliform (MPN/IOOml) 12 15 24 21 SMEWW 9221B-2005 I . I I * Ghl chu: - " ­ Ket qua ChI co gla tq tren mau thu. Tp.HCM, ngay 30 thang II nam 20 10 D~i di~n 16 phan tich}, Pho giam dOC Trung tam ------. CONG HOA xA HOI CHi! NGHIA VIJl:T N. . . . DOC LAp· TU DO • HANH PHUC . *** PTNI: Km9+200. QL22. Tp.HCM. PTN2: S6 I. Xa 10 Tn.n:mg Scm. Dl An, BD .::= ? A , KET QUA PHAN TICH S6:3300 DUll vjyeu c&u: CONG TY CO PHAN SAl GON THANG LONG Dja chi: 32 Nguyen Trc;mg LQi, Phuong 4, Qu~n Tan Blnh, Tp HCM Ngay Illy m8.u: 22-25/1112010. LOfli m8.u: Nuue ngam Vj Irl quan Irde: Khu TNT An HAi B&e, P. An HAi B&e, Q. Scm Trll K7-1: NN he} Nguy~n Binh Giang, Tran Hung D~o, PAn Hlli B~e K7-2: NN hQ Le Due·Be, DuOng Ly f)~o Thanh, PAn HAi Bile Khu TNT ThUy Tu, P. H6a Hi~p Bile, Q. Lien Chi~u; K8-1: NN he) Phan Van vich, P H6a Hi~p Bilc K8-2: NN hQ H6 Thi Bleh NgQc, P H6a Hi~p B~e. ! Ten miu i Chi lieu Plurung phtip Sit pl,an liel, N7-1 N7-2 N8-1 N8-2 11111' nglriim I pH 6,58 6,57 6,84 6,80 TCVN 6492: 1999 2 Di} cti'ng (mg/I) 44 40 200 169 TCVN 2672:78 COD Mn (mg/I) 0 2 2 lIS KO 102: 1998 3 Fe (mg/I) ° 0,05 <0,02 <0,02 <0,02 lIS KO 102: 1998 4 5 N-NH4+ (mg/I) 0,01 <0,01 <0,01 <0,01 SMEWW 4500-2005 6 N-N03" (mg/I) 0,004 <0,004 0,83 0,65 SMEWW 4500-2005 7 Pb (mg!l) 0,029 0,025 0,045 0,047 lIS KO I02: 1998 8 Cr(mg/l) 50 52 124 98 SMEWW 4500-2005 9 Coliform (MPN/IOOml) 3 9 3 II SMEWW 92218-2005 * Ghl chu: . . .. '" . Ket qua ehl co gla trt tren mau thu . Tp.HCM, ngay 30 thang II nam 20 10 Ph6 giam doc Trung tam eONG HOA xA HOI eHl) NGHIA VIE:T N D<)eL~p-TVDO-H~NHPHUe *** PT!'il: Km9+200, QL.22, Tp.HCM; PTS2: S6!, Xa 10 Truimg S 14- ThOn Tung Uim, Hoa Xuan, CAm L~, Da Ngng ) NIl: NN hQ dan Phan Thi H6ng (T1> 17, Hoa Xuan, C~m L~, Dfl NAng) Chi tieu Kit qua PhuO'ng phap TT phan tich thirnghijm NIO Nll ! 1 pH 7,20 7,41 TCVN 6492:1999 I DQ carng (mg/I) 34 28 TCVN 2672:78 2 3 CODMn (mg/I) 4 2 JIS K0102:1998 I 4 TS (mg/i) 648 331 SMEWW 2540 B-2005 I 5 N-NH/ (mg/I) 0,07 I 0,08 SMEWW 4500-2005 I 6 Cr(mg/I) 320 166 SMEWW 4500-2005 i 7 Coliform (MPN/lOOml) 9 3 SMEWW 9221 B-2005 8 Fe (mg/I) 0,12 0,11 JIS K0102:1998 9 Mn (mg/i) 0,15 0,13 ]IS KOI02:1998 10 Pb (mg/J) 0,010 0,011 JIS K0102:1998 J * Ghi chu: K~t qua chi co gia tri tren m~u thu. Ngay 07 Ihimg 04 nam 2011 Dai dien ttl phin tich Phd giam doc Trung tarn • • " . jA., CONG HOA xA HOI CHi) NGHiA VI~T N, DOC L~P • TV DO - H~NH PHUC *** PTNI: Km9+200. QL.22. Tp.HCM; PTN2: Sci I. Xu 10 TruUng Son. Di An. BD ~ ? '" , KET QUA PHAN TIeH (DV' AN XD T~M XU LY NUOC THAI LIEN CHIEU) S6:4722b Dun vi yeu cau: CONG TY CO PHAN PHATTRIEN H~ TANG THA.NG LONG Dja chi: Can 1001, Toa nha 101 LClng fIg, D6ng Da, fIa Ni)i . ,c - Ngay lay mau: 3010312011. Lopi mO.u: Nuuc ngam Vi tri quan trdc: N12: NN hQ dan Tr§n Hl1c qua luai 1alit mrac. Cac mau thu duQ'c c6 dinh ngay tl(1i hi~n tmung thu mau bdng dung djch formaldehyde 4% va duQ'C danh d§.u, ghi chu tren nhan. Thu mfru dQng v~t khong xuang sang cO' Ian: su dt,mg gau day ki~u Petersen d8 thu m§.u v6i t6ng di~n tich la 0,1 m2 . T§t ca v~t ch~t thu dUQ'c tir gau day ehuy8n qua simg va sau do sang ky 101(11 bo bOt cae v~t eh~ttmae khieho miiu vao II;>. Cac mfru thu duQ'c c6 dinh ngay tl(1i hi~n tmung thu mfru bdng dung dich formal va duQ'c danh d§.u, ghi chu tren nhan. 9 Ngoai ra, ghi chu thlJc dia cling dlIgc thlJc hi~n: thai diSm thu m~u, vi tri l&y mftu, d~c diSm dong chay, mrm nl!(Jc, nmlc Ian hay rong, d~c diSm n€n day, gAn hay xa khu dan CII, nhit may, xi nghi~p ... Day hi nhii'ng thong tin nit quan tn;mg g6p ph~n ly giai, lam sang t6 k~t qua phan tich. Trong phong thi nghi~m Vi~c dinh danh thuy sinh v~t dlIgc dlJa tren CCf so hinh thai hQc (morphology) vai Sl! trg giup cua tM li~u phan lo~i cua cac hic gia trong va ngoai nlIac. Mdu dinh llIgng thlJc V?t phieu sinh dllgc phan tich theo cac phllCfng phap bu6ng d€m Sedgewick Rafter. M~u dinh llIgng dQng v~t phieu sinh va dQng v~t khong XllCfng s6ng cO' Ian s3ng day dlIgc phan tich bing cach d~m t&t ca, cac ca th~ c6 trong m~u dinh lllgng. Phan tich sa li~u Til k€t qua phan tich, thi€t l~p thanh phAn loai, du truc qUc1n xii va du true s6111gng. 2. KETQUA VATHAOLU~N Thl}'c v~t phieu sinh Dac tinh thanh phein loai K€t qua phan deh ghi nh~n dllge 55 10ai. C~u true thanh phkn loai dlIge trinh bay trong Bimg 1. Bang 1. cdu truc cac nh6m d(mg w;lt phieu sinh khu VlfC dlf an LOp Thang 3/2011 salmH Ty l~ (%) Cyanophyta 9 16,4 Chrysophyta 26 47,3 Chlorophyta 13 23,6 Euglenophyta 4 7,3 Dinophyta 3 5,4 Tang ding 55 100 Phan tieh du true thanh phAn lmli thlJc v~t phieu sinh 0 khu VlJC dlJ an c6 th8 philn bi~t cac nh6m loai: Nh6m loai nl!(Jc m~n di nMp nQi dia g6m hAu h€t cac loai tao thuQc nganh Chrysophyta. Trong d6 cac loai nl!(JC 19 - m~n di8n hlnh g6m Melosira granulata, Cyclotella comta, Coscinodiscus (3 loai), Ditylum sol, Leptocylindrus danicus, Synedra ulna, Thalassionema nitzschiodes. Rhizosolenia setigera, Amphora ovalis, Nitzschia palea, Nitzschia sigma, Cerattum macroceros. 10 Nh6m loid chi thj cho moi truang nuac acid yeu g6m Navicula (2 loai) , Pinnularia rnesolepta. Ankistrodesrnus falcatus. Aetinastrurn hantzschii, Closteriurn rnoniferurn. Staurastrurn dickiei. Nhom loai chi thj cho moi truang gh\u dinh duO'ng va nhi6m bAn huu co muc b~n vira a do:;tn song nay vo cung phong phu g6m toan bo sd loid tao lam, tao mk cac Ioai tao silic: Melosira granulata, Cyclotella cornta, Leptoeylindrus dan ie us, Ditylurn sol, Fragilaria virescens, Rhizosolenia hebetata, Synedra ulna, Nitzschia (3 loai) va cac loai tao h,lc Pediastrurn tetras, Seenedesrnus (2 loai), Monoraphidiurn griffithii. Dac tinh s6 hrang va loaf uu thi nhdt M~t do ca th~ biSn thien tir 3.700 (Di~m 4) 9.200 (DiSm 3) ca th~/1ft. Loai Nitzschia palea a chiSm uu thS tit ca cac diSm. DQng v~t phieu sinh Dae tinh thanh ph&n loaf KSt qua phan tich ghi nh~n dugc 6 loai va 2 d~g iu trung. ciu truc thanh phfrn Im\i dugc trinh bay trong Bang 2. Bang 2. cdu true cae nh6rn d{mg Vl;lt phfeu sinh khu v¥e d¥ an LOp Thang 3/2011 saloai Ty I~ (%) Copepoda 5 62,5 Arnphipoda 12,5 Larva 2 25,0 T6ngcQng 8 100 Phftn dch du truc thanh phfin loai cho thfry tit ca cac 1001i thu dugc d8u lit cae lolli gdc biSn di nh~p nQi dja. Cac loai chi thi cho moi truang giim chit dinh duang va nhi€m bAn huu co g6m Sinoealanus laevidactylus, Acartia clausi, Oithona similis. Dae tinh s6 luang va loal uu thi nhdt Sd lugng ea the dong v~t phit~u sinh vung khao sat biSn thien tl1 2.000 (Di~m 4) 5.500 (DiSm 1) ea thS/m 3• Cac loai Sinoealanus laevidactylus, nat/pUus copepoda ehi8m uu thS. DQng v~t khong xU'O'ng s8ng CO' l6'n iY day Dac tinh thanhph&n loaf a Qua IAn khao sat DVKXSCL t~i 4 vi tri thu m~u song r~eh khu V1,l'c d1,l' an thang 312011, dii dinh danh duge II lolli. ciu true thanh phfin Imli dugc trinh bay trong Bemg 3. Bang 3. cdu true thanh ph6.n loaf cae nh6rn D VKXSCL & khu v¥c dl! an L6'p Thang 3/2011 11 S610ili Ty I~ (%) Polychaeta 9,1 OIigochaeta 1 9,1 Gastropoda 3 27,3 Bivalvia 4 36,3 Insecta 2 18,2 Tang cQng 11 100 Trong t6ng s5 11 loai DVKXSCL thu dugc trong IAn khao sat nay co 2 loai g5c bi~n di nMp n9i dia la Nephthys polybranchia va Aloidis sp.. Cac loai chi thi moi tcuang giau chAt dinh duang va nuac nhiSm bdn huu co g6m Nephthys polybranhcia, Limnodrilus hoffmeisteri, Melanoides tuberculatus. Polypedilum sp.. Mat do va loaf uu thi nhdt a M~t d9 DVKXSCL thu dugc song r~ch khu VJ!C khao sat biSn thien tl1 150 (Di~m 1) - 910 (Di6m 2) ca th6/m 2 • Cac loai uu thS la Corbicula tenuis va Aloidis sp.. 3. KETLU~N Tren co sa kSt qua phan tich cac mau thuy sinh v~t thu thang 3/2011, co thS xac djnh chAt lugng nuac khu V\fC DJ! an nM may xu Iy nuac thai Hoa Khanh thu9C lo~i Ig nh~t, chiu £lnh hu6ng cua ngu6n nuac acid ySu tl1 thugng ngu6n va gUm dinh duang. Khi nh~ ngu6n thai nhiSm bdn hfru co nilO co thS xay ra hi~n tugng phU duang hoa. 4. PHV LVC: KET QuA PHAN TicH cHAT LUQNG THUY SINH KHU VI/c nV'AN 4.1 THANH PHAN LoAI THlJe VAT PHIEU SINH 0 SONG ViNH m$N KHU V(/e 01/ AN NHA MAy xv LY NlJOe THA[ HOA XUAN Thimg 03 nam 2011 Stt Ten khoa hQc -­ I I CYANOPHYTA I I [ 2 I 3 " .j i I I Cyanophyceae I I I i I Chroococcus minutus + + + + I I 2 Dactylococopsis acicularis + I + I ! 3 Microcystis aeruginosa + + + + ! 4 Merismopedia glauca + + i 5 Anabaenopsis racibo~ski + + + + ! 6 Oscillatoria tenuis + + + + I 7 OscilIatoria geitleriana + + + + 8 Phormidium tenue + + + I .9 SpriruIina major . + I 12 I I I CHRYSOPHYTA I I I Bacillariophyceae ~10 I Melosira granulata + j + + + ! I 11 . Cyclotella comta + + + + f~ 12 Coscinodiscus nobilis + + + + 13 Coscinodiscus subtilis + + + + 14 Coscinodiscus lineatus + + + + 15 Leptocylindrus danicus + + i + + 16 IRhizosolenia setigera + ! 17 Ditylum sol + + + 18 I Fragilaria virescens + + + + 19 Thalassionema nitzschioides + 20 Synedra ulna + + + + I 21 Achnanthes exigua + I I 22 Cocconeis scutellum I + + 23 Navicula placentula + + + 24 Navicula rostellata + + I 25 Pinnularia mesolepta + 26 I Gyrosigma balticum + + + 27 Pleurosigma affine + + + + 28 Diploneis smithii + + I 29 Cymbella turgida i + I 30 I Gomphonema ovalis + + i 31 Amphora ovalis + I 32 Nitzschia vitrea + + + + 33 Nitzschia paJea + + + + 34 Nitzschia sigma + I + + J 35 Surirella robusta + i + ..­ + CHLOROPHYTA Chlorophyceae i 36 i Asterococcus limneticus + + + , I 37 Schroederia setigera + + i 38 Pediastrum tetras + + + + 39 Golenkia radiata + ! + .~ ! I 40 Scenedesmus quadricauda + + + + 41 Scenedesmus acuminatus + + + 42 Tetrastrum heteracanthum + + 43 Ankistrodesmus falcatus + 44 Actinastrum hantzschii + + 45 Closterium moniliferum + + 46 Staurastrum dickici + J 47 Monoraphidiumgriffithii + J + + + 13 I i 48 Udotea javanensis I + I I + i EUGLENOPHYTA I ! . Euglenophyceae I 49 Euglena acus ! i + + + + 50 Euglena erhenbergji + ! + + 51 Trachelomonas volvocina + + + + I 52 Phacus21euronectes + + + I : I DINOPHYTA I i Dinopbyceae I 53 I Peridinium willei + + + + 54 Peridinium cintum + + + I 55 Ceratium macroceros + + TA02 sA loai 42 40 36 38 4.2 s6 LVQNG THtJC V~ T PHIEU SINH 0 SONG VINH £)leN KHU VI)'C DI/ AN NHA MA Y xU LYNVaC THAI HOA XUAN ThOng 03 nam 2011 , f)i~m sA hrgog (ca th~/lit) Loai ltU th~ so IU'gog .t thu mlu loai U'U th~ (ca th~/lit) 1 8,600 Nitzschia palea 4,120 2 5,700 Nitzschia palea 2,640 I 3 9,200 Nitzschia palea 4,360 4 3,700 Nitzschia palea 1,890 I 4.3 THANH PHAN LoAI VA s6 LUONG DONG V~ T PHIEU SINH SONG ViNH DleN KHU VI/C DI/ AN NHA MA Y xu LY NVaC THAI HOA XUAN Thong 03 nam 2011 Stt Ten khoa hQc ! Tram thu mAu I 1 2 3 4 I COPEPODA Paracalanidae I I Paracalanus parvus (Claus) I I I Centropagidae 2 Sinocalanus laevidatylus Shen and Tai 27 i 13 16 i 7 Acartiidae i i 3 Acartia clausi Giesbrecht 2 I I j 2 Oithoniidae 4 Oithona similis Claus 4 6 2 I I 5 Limnoithona sinensis Burckhardt i 6 2 3 2 I 14 I i I AMPHIPODA I I I I Corophiidae r6 I Kamaka palmata Dang I LARVA I I 7 Nauplius copepoda 16 9 22 9 I 8 Polychaeta I 2 sJ loaf 5 8 6 6 ! I sa iU{J71g (cd tl,i/ml) i 5500 3500 4500 2200 4.4 THANH PHAN LoAl VA so LlJQNG DONG V!T KHONG XlJdNG SONG CO LON 0 DA Y SONG VINH DIBN KHU Vl/C DlJ AN NHA MAy xU' LY NlJOC THAI HOA XUAN Thang 03 mim 2011 i Stt Ten khoa hoc Tram thu miu I 1 2 3 4 ! PHYLUM ANNELIDA i , CLASSPOLYCHAETA I : Order NEVEIMORPHA I Family Nephthydidae I Nephthys polybranchia (Southern) I 2 7 3 3 I J CLASS OLIGOCHAETA · Order TUBIFICIDA , I Family Tubificidae 2 Limnodrilus hoffmeisteri Claparede IO 3 3 I J PHYLUM MOLLUSCA I CLASS GASTROPODA · Order MESOGASTROPODA I Family Thiaridae J I 3 Sermyla tornatella (Lea) 1 4 · Melanoides tuberculatus (Muller) 4 2 , Family Stenothyridae 5 Stenothyra sp. 7 I CLASS BIVALYIA I I I Order VENEROIDA Family CorbicuIidae I 6 i Corbicula tenuis Clessin 47 6 48 7 Corbicula cyreniformis Prime 6 8 I Corbicula blandiana Prime 6 Family Aloididae 9 Aloidissp. 13 PHYLUM ARTHROPODA I CLASS INSECTA 15 I I Order DIPTERA I ! Family Chironomidae ; I 10 I Ablabesmyia sp. 10 11 i Polypedilum sp. 4 i Sa lodi 2 7 5 5 I sa IU'(1ng/m2 150 910 170 620 Trung tam ttr v~n chuyin giao cong ngh~ moi trlfimg PHD GIAM DOC 16 BAD CAD CHUYEN DE D;).C DIEM KHU HlJ: THUV SINH V;).T 6 SONG CU DE KHU VljC nT! AN NHA MA V xu LY NUOC THAI HOA KHANH - TP. DA NANG Thcing 03 niim 2011 1. PHUONG PHAp NGHIEN CUu Ngoai thl,.fc dla a Thuy sinh v~t khao sat song r~ch khu V\IC D\I an Nha may xu Iy nuac thai Hoa Khanh - Tp. Da N~ng thimg 03/20 II, baa gAm th\IC v~t phieu sinh, d(lng v~t phieu sinh va d(lng v~t a khong xuO'ng s6ng cO- Ian s6ng day (DVKXSCL). Vi~c thu mKu duqc tiSn Mnh t~i 4 di~m. T~i m6i di~m khao sat, cac mKu dinh tinh va dinh Iuqng duqc Idy cho vi~c philn tich trang phong thi nghi~m. Bang 1 Vi trl l~y m~u thUy sinh khu Vl/C Tr~m XLNT Lien Chi~u I Ky hieu Vi tri r:iy miu (fit I TS5 Vi tri ti8p giap voi nh{mh clIa Song Cu De vS phfa Tay B~c clla tr~m XLNT-gAn . tuy8n duang Nguy~n Tat Thanh n6i dai I TS6 tren nhanh song Cu De cach vi tri TSS khoang 300 vS phia B~c I TS7 I tren song Cu De voi vi trf gdn tuy8n duang sAt B~c Nam n6i ra bi~n I TS8 Nuoc bi8n, phia ben kia tuy8n c6ng~n m~n n6i voi song ClI De ra bi~n Thu m~u th\Ic v~t phieu sinh: m~u dinh Hnh th\Ic v~t phieu sinh duqc thu bAng luai vat th\Ic v~t phieu sinh kiSu Juday, vai kich thuac m~t luai la 25~m. Mftu dinh hrQilg duqc tim thea phuO'ng phap Sedgewick Rafter, th~ tich m~u duqc thu ngoai th\Ic dia la lHt. Cac mftu th\Ic v~t phieu sinh duqc c6 dinh ngay t~i hi~n tf11emg b~ng dung dich formaldehyde 4% va duqc danh dftu, ghi chu tren nhlin. Thu m~u d90g v?,t phiSu sinh: mdu dinh Hnh duqc thu b~ng hrai vat phh~u sinh ki~u Juday, vai kich thuac m~t luai Ia 25Jlm. Mftu dinh luqng duqc thu b~ng cach IQc qua luai I alit nuac. Cac m~u thu duqc c6 dinh ngay t?-i hi~n tmang thu mau bdng dung dich formaldehyde 4% va duqc danh ddu, ghi ehu tren nhan. Thu m~u dQng v~t khong xtrO'ng s6ng cO' Ian: sir dVng gau day ki~u Petersen dS thu mliu vai tdog di~n tich Ia 0,1 m 2 • Tdt ca v~t chdt thu duqc ttl gau day chuyen qua sang va sau do sang ky lo~i bo bat cac v~t chdt tmac khi cno mfru vao IQ. Oie mdu thu dUqc e6 dinh ngay t~i hi~n tf11ang thu mfru b~ng dung dich formal va duqc danh dau, ghi chu tren nhan. Ngmii ra, ghi chu th\Ic dja cling duqc th\Ic hi~n: thai di~m thu m~u, vi tri I~y m~u, d~c diem dang chliy, mim nuac, nu6c Ian hay rang, d{ic diSm n~n day, gin hay xa khu dan cu, nM may, xi nghi~p ... Day lit nhung thong tin rat quan tn;mg gop ph&n ly ghii, lam sang t6 k~t qua phan tich. Trong phong thi ngltifl1l Vicc djnh danh thily sinh v~t duqc dga tren co sa hinh thai hQc (morphology) v&i SlJ trg gillp cua !iti li~u phan lo~i cua cac tac gia trong va ngoai nuac. Mftu dinh luqng thgc v~t phieu sinh duqc philn tich thea cac phuong phap bu6ng d~m Sedgewick Rafter. M~u dinh iuqng dQng v~t phieu sinh va dQng v~t khong xuang s6ng cO' l&n s6ng day duqc philn tich b~ng each d~m t&t ca eae ea th~ eo trong m~u djnh luqng. Phon tich sa /ifU Tic k~t qua philn tich, thi~t l~p thanh phdn loai, c&u true qudn xii va c&u true s6 lugng. 2. KET QUA vA THAO LU~N Thl}'C v,t phieu sinh f)Cic tinh thanh phdn loaf K~t qua philn tich ghi nh~n duqc 76 loaL cau truc thanh phdn Ia<\i duqc trinh bay trong Bang 1. Bang 1. cdu truc cac nhom d(mg wjt phieu sinh khu v¥c d{c an L6'p Thaog 312011 .- S810ai Ty I~ (%) Cyanophyta 14 18,4 Chrysophyta 33 43,4 Chlorophyta 20 26,3 Euglenophyta 6 7,9 Dinophyta 3 4,0 r:t cQng oog A 76 100 Philn tfch c&u truc thanh phdn loai thlJc v~t phieu sinh a khu VlJC dg an co th~ philn bi~t eae nhom loai: Nhom loai nLrac mliin di nh~p nQi dia g6m hdu h~t cac loai tao thuQC nganh Chrysophyta. Trang do cac loai nuac 19 - m~n di~n hlnh g6m Coscinodiscus (3 loai), Skeletonema costatum, Chaetoceros (2 loai), Ditylum sol, Leptocylindrus danicus, Nitzschia longissima, Nitzschia sigma. Nhom loai chi thi cho moi truang nuae acid ySu g6m Diatoma elongatum, Navicula (3 loai). Pinnularia major. Nhom loai philn b6 t~p trung 6 Di~m 1 noi tiSp nh~n ngu6n mr&c tir H6 Tram. Nhom loai ehi thi cho moi truang giiiu dinh dUOng va nhi~m b~n huu co muc b~n vua 6 do~n song ll Investment r'rtHi'E'1 Phase 2B Appendix 5-1 Excavated materials Debris Excavation Filling - back I Transport I I . LIAs (m 3) (1) (m 3) (2) (m3) (3) (m 3) I ! 3-2+1 LIA1 2,069.0 1,182.3 i 1,182.3 i 2,069if LIA2 428.5 808.8· 863.9 483.70 . LIA3 1,246.80 i 776.90 785.40 1,255.40 I LIA4 588.1 845 903.9 647.00 LIA5 2,108.60 6,101.00 6,475.30 2,482.20 I LIA6 945.6 1318.6 1408.9 1,035.90 LIA7 514.5 1637.7 1690.5 567.30 LIA8 7,555.00 2,618.70 6,174.30 7,920.l0 LIA9 1,428.40 · 923.30 934.40 1,439.50 Total 16,884.50 i 16,212.30 20,418.90 17,900.80 95 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B Appendix 5-2 Vinh Dien River flow - CDM-LO-0736 96 CI);\'I Project OlTice for VaIlall~ Cil) Pill' S'h Fil"l!' llIT1Et\'CO 5 T(1\ \\, 1 77 '<~u)\.'!l Du Street. IliJi C!IHII I hrri":L 1),111.Wi! City. \ictl~;1!1l reI, 0:; II 3SS 0778' 1;;.\. 0) II 38S (,99~ ;.:i\1aii: ~_l;}!l~l!t:;t.lni{. :":((Cdfll\ ic;n~flu .. -~)!I( H('f. CIlM-()NJ'UPI201 JlLO-1I73() illite: .July 6, 2011 ["0: .\J r Luong Thach \1\- Director Oa Nall~ l'rlority Infr:tstnll'lul"e hrn,Slmcnt Project .""n. :'-1. Tlwi L'hilll i{v.HI. Da Sang Cit). YkllHllll lka( Mr. Vy CD\I is ~..:nding }lHI t'UI' lljfici111 r,~Spl)l1S~ regarding til..: (\lkuJalllll1 of the Bridg~'s Ilow a( Il)\V water kvl'l. Pkasl.' SCI! Ihe ddails of thl.: \.':Jlculatiul1s ::lnd the 1110Ipilo[')gicui sl,cti(l/1 of Khllc Dong Bridge in tIl': alta.:h11l1.'nb :Illd kt U~ know if' you hav,: UllY qUl'stiol1s DANANG PHP PRO.JEer PACKAGE A23-24+E21: OCTAit..ED CESIG1J COM Project Olffice for Oanang City PUP' Uti· Floor Qf ClENCO :, Tower, 17 Nguyen l)u Street, Hal Chau Dlstl iet, Danang Oty, Vietnam If'i. 05 11 388 (,77a I Fax. OJ 11 31:)86998e;-lail: J)ANANG Pili' KHUE UONG HHfGUE - Cl2 CALCTLATJON OfKlW DONG BRIDGE'S ji'LOW AT LOW-WATER II"'O.61 I. Input dahl: III"" -fl.6Im Slopc uf Willer ~mt;lcc j . O.I)()()() 1 H. Formula: () V xm 111 which 1'; (1112): welted cross sectil)!1 C()t'l'.:spol1l1ing to Im·v-\.vater \' Water vdncily at dcsignc'd section I , ,~ I 1.2 Scdi-l'vbnning's tt1l'tlluiaev •__ • /, - I " • i 1/ In \vhich 20 roughllcs;; l:()('flil'k~nt of rivcrbed " 'OJiO()(l! slope or \\atcr Surl~ICC. Welted cnlSS sccti,;n (1)·'S(J9.35m2 W<..'ttcd p.!rimcter x······ 252. (,)4111 Ilytiraulic radius R2.37m Thus: 2i3 1 "I 2u.( 2.37) .( O.!J[liiI!1 ) .59'),35 .. 67 .3] 11/] ! s CDIVI International Inc. -< C (,"',1,--., <~ Z--. -, '­ , , :L u.,;-­ ''''' v 0 0 ~ z CO '0 v ,"" :::: z 'U-i 0 ::J ...,... 0 .­ f..l.J ~ --, -' ::J ::c 1<-« ~ . u ,....... ,...... ,-« 0 ~ ....... z :­ 0 ::r: - ~ ~ if! f--.. ,..... 1 « '< U U f--.. ,-«. ,,", v 0 :2 .....; .... 0 ...... :~ 0... 0::: 1"""­ '-' ~ " .. " >~ .... " ! ElA Phase 2B Appendix 6- 1 Environmental Code Of Practice (ECOP) ~__ IMPA_C_T_S_~_C_O_D_E___ . 1 - -_ _ _ _ __ MITIGATION MEASURES ---------~ - Dust the surface before demolition I--------j------jl-----'-'-------------- , , _.. . .Fi.r_s.t_e.x.c_ava._te.d._"fi_r_s_.t builed and tilled immediately after finished --­ I D3 I Frequent spraying water on excavated soil and the site surface D4 i Cover the temporary material storage site 05 Removing waste out of construction site as soon as possible Cover the transport means to avoid dust, soil and building materials I 06 oltation 07 in sites 08 -----_._ .._--------._----------------1 Use fencing wall with height of about 1.8-2.2m surrounding the project 08 _ _ _ _ _ _I ­_ _ _-+_to_'_n_il_lim ize dust dispersed iIl!~ J~.2tlfTound iI1~.ly area or disposal as regulated... ___i T5 Avoid transportatIon durIng rush hour : Arranging transpoliation instructors at the start and the end position of T6 construction areas to avoid congestion at ~eak hours (when necessa_l~ Digging work at the intersection of routes done by each part, each half T7 i the width of alternate routes T8 I Successive construction method damage roads RBI I Reimbursement for road surtac~s and in the sholiest time ! and bridges The contractors must select transportation rOlltes, vehicle loading and RB2 distribution of quality dmvnloads to not damage roads and bridges; Health and Provide emergency mcd ica I services at construction sites HSI ! safety - .--._. - ---... ~---- HS2 Install construction barriers lLel1ccsand dallgero~ls warning signs HS3 Limit speed at the constru<::lil)'2._si!~ ..... --­ I HS4 Avoid trans ortation in rllsh hOllrs HS5 HS6 HS7 E ui ed workers with labor rotection instruments HS8 i Avoid lon a ex osure to waste­....- - - - - - - - - - - - - - - - - 1 -- '--_ _ _ _ _-+-_H_S_9_-+Training workers on safet)' E~Jil!latio_n_s_____-'--~_ _ _ _ _ _-+ '--_ _ _ _ _-'--_ _ _ _'--C_le_an the site prior to cOJ~lple_tic:>I~311d closure; 101 EfA - Phase 2B HSI2 • Calculate and apply the necessary measures to prevent landslides I Workers Sh~uld carry protective clothing and to protect and not HSI3 to ""ork to~ long in tile clos".:~L~-'.1yiron111ent; ! In case of problems, stop the construction and implement of necessary HSI4 I measures affect people, I l\otice the construction plan for the ward authorities and communities, at small business PCI least one week before construction households - .--~.----~. .­ I Management training anci coaching reasonable way, not to spill or fill PC2 excavatecl approach to people's houses Erosion and Contractors should apply the appropriate measures to avoid the landslides ERI reinforcement of soil erosion. damage and accidents in the process of digging the soil and exploit the holes they have materials and so on ... ; ER2 Workers should be trained on how to handle when there are landslides; ! ! Contractor shall ensure absolute safety for workers perform excavation ER3 and other common tasks; 1 Loss of trees ,I _al_ld_c_ro->-s_ _-+__ _ _ compensation for lost L_I i-i tre~~,!!lsIcJ:_o-'---_ _ _ _ _ _ _ _ _ _ _ _ _- - i L2 ianting new trees as soon as work___L-_____ _ _______ ~ Loss of compensation for affected households i agricultural L3 land ~~----~-----r--------------. ------­ suspension of construction plans for the power company electricity ECI I T?m ngung Len k~ hm,lch thi cong v6'i cong ty thoat nu0'C thoat nuac Planned construction and drainage company DCI Suspension of water draina e temporary Construction is planned in consultation with company management suspension of UI services services Manually digging works Ileal' sensitive as telecoITIITIunication cables, i--_ _ _ _ _--t_ _ _ _-r-'---o_\'_'e_r_c_a_b_1e_s_a_l_ld_tr_a_ffi_lc 1i~I~t.?c,\yater Stlppl y pi pes, __ L-._ _ _ _ _ --t_ _F_l_ _i--l\-'-'~o vet c6ng hi~n hUll ctinILk;t ________ i Floodin F2 Avoid to damage the existing.~~~(lil_la-'gLe_s~}'-'s_te_l_n_ _ _ _ _ _ ___ 102 EIA oIDa Nang Priority Inj;Ylstructure.!"I'(!SIIll(!f/{ 1:,_'()/cc{ - I'/7(_I'~_'e_2_B _ _ _ _ _ _ _ _ _ _ __ _ Appendix 6-3 Typical mobile toilets 105 EIA ofDa Nang Priority Infrastructure Jnves(lllellf Pro!!!(L~J~h_a_se_?_2_B_ _ _ _ _ _ _ _ _ _ __ Questionnaire 8-1 and 8-2 I. RESPONDENT INFORMATION Fullname of respondent '" .... n ......... '" ..... , '" •• , .. , ......... Male 0 Female 0 Relationship to head of household: Full name of household head: n. n ........................... '" ......... Male 0 Female 0 Address: Education level: Occupation: II. ADVERSE ENVIRONMENTAL AND SOCIAL IMI>ACTS OF THE PROJECT 1. no you heard any information about the Phase 2B of Da Nang Priority llt{rastructure investment project? o Yes, clear o Have known, but not much o Do not know o Do not interested Reason: ...................................................................................................................................................... . 2. Do you know some effects of site preparation? o Anxiety o Disturbance life o Changed career o Do not have any adverse impact o Other ...................................................................................................................................................... . 3. What are the impacts of the constmction stages'! o Dust o Noise o Social activities o Affected surface water quality o Affected groundwater quality o Other ...................................................................................................................................................... . 4. What is the most considerable environmental issue during the construction phase? o Smoke, dust o Noise o Wastewater o Construction waste oTraffic accidents o Other ..................................................................................................................................................... .. 106 EIA Phase 2B 5. What are impacts of operation phase? o Air pollution c Polluted ground water c Polluted surface water o Traffic safety c Noise o Do not have any adverse impact D Other ...................................................................................................................................................... . III. INFORMATION ABOUT THE QUALITY OF TliE KNVIRONMENT BEFORE IMPLEMENTED PROJECT I. You agrees that the construction activities of the project will calise adverse environmental effects (air pollution, dust, solid waste ...), social security and traffic safety, though these effects will stop after construction phase. D Agree 0 Disagree 0 No comment D Other: ....... . 2. In your opinion, whether construction contractor is required prior notice to affected people on the issues of environment, safety and traffic obstruction may occur before implemented construction activities. D Necessary D Not necessary No comment D Others: 3. In your opinion, whether construction contractor needs to agree and local people's consensus of construction time D Necessary 0 Not necessary D No comment o Others: ........................................................................................................................................ . 4. You have agreed that the construction contractor has to implement effective measures to reduce pollution, increase safety, reduce traffic jam. o Necessary D Not necessary 0 No comment D Others: ......................................................................................................................................... . 5. In your opinion, whether Project Management Agency needs to inspect, monitor environmental problems, safety and traffic obstruction during construction time D Necessary D Not necessary No comment o Others: 9. In your opinion, when is the best time for construction? (choose only one option) c From 7.00 to 17.00 o From 17.00 22.00 o Day and night as time above o whole day and night o Others (detail) 10. In your opinion, what should the following technical measures be used to minimize adverse impacts on the environment and society in the process of construction? (can choose some options) o Transport equipment meet standards, careful cover to reduce dust o Construction material is stored neat and regular watering to reduce o Suitable construction equipment and time to reducc noise D Having signs, signals outside and inside the construction site, especially at night o Having traffic signs 107 EIA ofDa Nang Priority Infrastructure Investment ProjeL! Phase 2B o Contractors and workers must to register with local authorities o Waste of construction site must be collected and disposed by contractor. o Others (detail) .......................................................................... .. 11. In your opinion, what would administrative measures arc applied for mitigation as followings? (can choose some options) o Setup a hotline and announce completed information about the project at the site for people to eas! Iy access and reflect timely the issues of environmental safety to authorities; o Train monitoring criteria of environmental safety for the cOl11munity; o Establ ished a commull ity supervision group by local authority; o Compensated construction contractor for causing adverse environment and public health; o Contractor must commit to compensate and reinstate the damage they cause to people; o The contractor must deal with community about the detailed construction time; o No need to apply any measures at all, trust construction contractor o Others (detail) ......................................................................... . 12. In your opinion, what would technical measures are applied for advel'se environmental and social mitigation in operation phase as followings'! (Cllll choose some options) o Manage and apply requirements of san itation and sately ill the collecting wastewater processing; o Monitor environmental quality in the project area; o Dispose and reuse dispersing air; o Strength slope to avoid subsidence; o plan trees around the project area; o Construction and operation as specification of wastewater treatment plant o Others (detail) ....................................................................................... .. 1. If so, what kind of information? (May choose more comments) o Construction projects o Works / class projects will make o Objectives of the project o Land recovery policy o Project owner o Compensation, clearance and relocation plan o Agency, responsible state in the implementation for compensation o Schedule of construction projects Others: ...................................................................................................................................................... .. 2. Did you know the benefits that the project will bring to you and the community? o Yes oNo 3. If so, then what are the benefits? o To improve sanitation conditions, flood prevention, water treatment, municipal waste, dust, noise o To change the beautiful green landscape o To improve people's lives o To attract foreign investment into the city o To improve living conditions and public health 108 EIA ofDa Nang Priority Infrastructure Invest~lent Projeci Phase 2B _ _ _ _ _ __ o An opportunity for people to reduce poverty o Create employment opportunities for local people o Other ............................................. ,..................... " ..... ,',., ........... ,.............. ,.................................... " ...... . III. ADVERSE IMPACTS ENVIRONMENT AND SOCIETY 4. Do you may know the effects of site preparation? o Anxiety o embroil life o Do not have any adverse impact o Other ........................................................................................................................................... ,', ........ . 5. What are the impacts of the construction stages'! o Dust o Noise o Congestion o Damage pavement o Impacts to local business CJ Disturbing public safety o Causing local flooding o Influence the surface water quality o Influence the groundwater qual ity o Other ............................................................................................................................................. ' ....... .. 6. What is the most stressing environmental issue during the construction project? o Smoke, dust o Wastewater o Noise o Construction waste DTraffic accidents o Other ...................................................................................................................................................... . 7. What are impacts of operation phase? o Traffic ace idents o Waste and wastewater o Do not have any adverse impact o Other ..................................................................................................................................................... .. IV. MITIGATION MEASURES 8. What time is the most reasonable construction? o Execution of the day from 7:00 am to 17:00 pm o Only construction night from 17h - 22h o Organization of the day and night construction on time o Execution on the day and night hours o Other ...................................................................................................................................................... . 9. Which technical measures are used to mitigate the following impacts on the environment and society? (May choose more comments) o Do not obscure the vision of people in tramc o Ensure standard of transporting means o Raw materials are gathered and regular watering to redllce dust 109 EIA Inlra!"rJ'H:ll.lre Investment Phase 2B o Construction at appropriate time to reduce noise o Install signs at the project area, especially at night o There are signs to guide traffic o Guiding force, distributed traffic flow at peak hOLirs o Contractors and workers mList register with local authorities o Waste must be collected and processed by professional authorities o Other ..................................................................................................................................................... .. 10. Which administrative measures should be arplied to minimize the impact (may choose more ideas)? o Establish hotline and information about the project at the construction site o Guidance / training in supervision and safety criteria for the community o Making community monitoring by government ward / commune administration o Do not influence the environment and public health o Contractor shall commit to compensate the damage caused to their people o Contractor shall deal with public sector projects on specific construction time o No need to apply any measures at all, trust in construction contractors o Other ...................................................................................................................................................... . V. PERCEPTIONS OF COMMUNITY WORK ON ENVIRONMENTAL PROTECTION 1. Do you agree that it is necessary to educate enyironmental sanitation for people? DYes oNo o No comments o Others 2. Do you think the improved sanitation conditions will be people's liveshelp the lives of local people more stable? o Agree o Disagree o No opinion 3. Do you have any other comments? Thank you! May 2010 Respondents (Signature and full name) 110 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B Appendix 8-3 List of interviewed household for the project No. Name - Address IEducation IOccupation Kind of toilet - Supply-water sources D ,~ Garbage th ep collection Others P~oject . mformatlon • I N0 t e ---­ I Ward ThQ Quang ­ District San Tra - - Wastewater discharge Good environment, Nguyen Supply-water I Sub-ward 15 8/12 Retaillbusiness directly to sewer Yes flooding in alley No Thi Hai Company system (no septic during rainy season t:mk) - - Duong Septic tank with Supply-water 2 Sub-ward 15 9/12 Worker Yes No - M;,mh 2 compartments (:;ompany - House near Wastewater sewer system, discharge Polluted environment TrAn Ground-water polluted odor 3 Be Sub-ward 15 - Retirement directly to sewer polluted alume 6m Yes caused by odor from No in dry days, system (no septic sewer system affected tank) ----­ - - - ­ human health -­ '-­ - Mai Good environment, Supply-water 4 Thi Sub-ward 15 5/1:2 Retail/business Yes flooding in alley Company Luu during rainy season -­ '--­ ~-- Nguy~n No. 65, Sub-ward Septic tank with 5 Thi 49 Khue Trung !Z 2 compat1ments Tam _ ,~--- 1---­ ------ Nguyen No. 18, Sub-ward 6 Van 49 Khue Trung IZ [ Bon I ---­ ----­ -­ --­ ---- Tran No. 18, Sub-ward 7 Van 49 Khue Trung [Z Supply-water Em --­ Company - I---­ - ­ -­ -­ ~-------- Van Alley 20 Ngo Septic tank with 8 Dtrc Quy6n 2 compartments Tn~ - I :--­ Nguy~n 39B Mim Quang 3 9 Duc area f--- Quang Le Viet 70 Man Quang 3 10 Tieu area - -­ ~- 111 EIA oj Da Nang Priority Infrastructure Investment Project Phase 2B ~~~ ~~- ~~ No. Name Address Education Occupation Su p >Iy-water Garbage Project Kind of toilet Depth Others Note ~-~~- SOlur ces collection information Nguyen rl)16 Resettlement - II Thanh !hQQuang 2 area - ~~~~~~~~- Nguyful La E4 ~~-~ 12 Van Resettlement Th9 Dang 9uang2 area ------ Phan E8 Resettlement r---­ ' ­-, ~~-~- 13 Thj ThQ Quang 2 area Hubng ~-~~ ~- t-~~ ~~- .. Van Ba Alley 10 Hili r~" ~ ,~ ~ 14 M~n Qll13:!l area Ph~m Alley 10 H~U r---~" ~~- 15 Thi Sau 9uan area Than Alley 10 Hili ,--~~' ~~- 16 Vrnh Quan area Dung ~~~- D?u Alley 10 Hiii ~-~~~- ~-~ 17 Ceng Quan area t-~~~ ~ ~~-~~ Hi~u I-::-:~~ ~ ~~-~~- ~~~- Van Alley 10 Hai r- 18 Thanh Quan area Hung Nguy~n . All, .~~~-- ~ '- r-~~-~~ f-~' ~~~-~~ ~~- I 19 10 H;ii ~~-~~~ . ~~. Nhim area , Septic tank with ~---,~-- S P Ily-water .. Mal 269 Sub-ward 15 ~- " 20 2 compartments C01 pany IB1!L~ Nguyen Sub-ward 26 r---~" ­ ~ ~~- 21 Van Mai 22 Vo Phu Th9An .~- -----­ 23 U Thl 27511 5 LQc PhuO'c Muo-i ---­ t-:rrrn­ Sub-ward 24 r---~" ~~~ '---~~, ~~~- -~, -------~ .. 24 Van Nhu 25 UThi Sub-ward I Ie ~~- ~~-~~~-~ -~ ~~, Nhu ~-'--,~-- 112 EIA ofDa Nang Priority Infrastructure Investment Project Phase 2B ---­ Supply-water Garbage Project No. Name Address Education Occupation Kind of toilet Depth Others Note sources collection information -~~~ r-------~:li ---­ ~-~ Nguyen Sub-ward 26 26 Thi Thu ----­ ----­ Nguy€n Sub-ward 26 27 Chi Sub-ward leader Phuong ~-~ ~~--~ Nguy~n Sub-ward 20 28 Qu6c Sub-ward leader Trj -~~~ ~~_~ _L~~~ ~~-~- II An Hai B~c Ward -So'n Tra District ,~~~~~~ ~~ ~~- --~~~-- Ngo Wastewater Ground-water va Thi discharge 1 Sub-ward 17 9112 Worker supply water Yes Good environment No Khanh directly to sewer Company. - Phuon<> system ~~ N~~ '" ~-~ ~~-- -~~ go Septic tank with 2 Thi Sub-ward 17 8112 Worker Ground-water Yes Good environment No 2 compartments Hi~n ~-~ ----­ Nguy~n 3 Sub-ward 17 Yes Good environment No Dai!;L - ~a; -~~ ~--~~ ::,0 ~ 4 HU'u Sub-ward 25 112112 Sub-ward leader I~-~- Khanh -==: ' r~~~~-~~- -----~~ -~ 5 Tran - I _ Sub-ward 24 Van An ~-~~ Le Van I---~~ I I ~-~ -~~ 6 Sub-ward 27 Lien --­ ----­ Septic tank with Supply-water ~- ~~- ~-~ ~~ -~~- ~-- -~ liming Deputy Sub-ward 2 compaltments Company 7 Thi My Sub-ward 21 leader Hanh TI:~l;-. -~- ~~-~~ --~~ ----­ ----­ 8 Van Sub-ward 18 Sub-ward leader K€t ~-~ ~~- Ng6 9 Hilu Sub-ward 25 Sub-ward leader Khanh ~-~ -~. ~-~ ---­ --­ 10 Mai Sub-ward 20 Deputy Sub-ward I 113 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B ~~:: Supply-water Garbage Project No. ddress Education Occupation Kind of toilet Depth Others Note sources collection information 1:­ _. leader Ph\l ... III Ward An H iii Dong - Q.So'n Tra ,.­ Water from Supply-water Company used H6 K 57/32 Sub-ward 4 g Septic tank with for drinking and Yes No Vinh 2 compartments ground-water used for other activities - - -"-- ­ Ground-water I H6T§n 5 S ub-ward 18 Septic tank with polluted high Yes No Phuc 2 compartments alume ­ .­ Ground-water I H6 TAn 6 Sub-ward 18 Septic tank with polluted high Yes No Long 2 compartments alume IV B1nh Thu~n Ward - Hiii Chau District , I' -- .... N. guy~n .1.· 89/33 Hoang -~ I -Flooding alley Hoa . D )i~u Septic tank :2 Dinh ,II 89/35 Hoang - Retailfbusiness Septic tank r---' Good environment D i~ll "J , 'I !-loa ___ ___ J__ _ r­ ~~, ~ ;guy~n N, I f- 89/27 Hoang Worker i Septic tank .J H6ng! [ --- -- ----. .. -. l·· Ph~l; I·~ 89129 Hoang - Supply-water 4 Phl! I Di~u Worker Septic tank Company Cua~ 1-· I P~~m 5 Hong 1 S .!b-ward 27 Ha - 6 IH6 Van S ub-ward 30 A c--. H6 1_7 I Tim S ub-ward 29 114 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B - - Supply-water Garbage Project No. Name Address Education Occupation Kind of toilet Depth Others Note sources information c-- - -~-- - - - - - ­ collection ----- Hoang 8 Nhu Sub-ward 25 1 NgQc - Tran 9 Van Sub-ward 28 Tich ~-- - l-Iuynh to Minh Sub-ward 22 Mdn r-­ V Hila Cm'rng B~c Ward - Hili CMu District I--~- - - Nguy~n -~ - 1 Van Sub-ward 52 Yes No Septic tank Vinh ~~ Supply-water ~~~-- - Nguylfn Company and 2 Thi Sub-ward 52 Septic tank Yes No ground-water - Khoai - ,~~ - Ph/;un 3 Van Sub-ward 52 Septic tank Yes Yes f--~ ~-I-~ Ph~n -~~-- --~--- -~ .~- Pham , 4 Thj 86 Sub-ward 52 Septic tank Yes Yes . -I-­ ! 5 I N~uy~n I Sub-ward 50 Septic tank t ~ _ _.--L H",g Bui ~ ~-~.--~~- f--­ -----­ - . ~~.-~. -- 6 I y,,, Sub-w"," 50 Septic tank I lhii [­ Supply-water . : N _-,-- '--_, ::0 Phu6c _ '" ----­ ---­ XA HOA LIEN I-IUY~N BOA VANG I-~---- -----­ --­ -----­ j--­ -­ 1-------­ -----­ - - - ­ Dan" . '" ----­ I Sub-ward 10 Worker f~~ ,---­ f­ -­ 2 Thl Sub-ward 10 Housewife 19Qc Septic tank with Supply water -Nguy~n --~--- 1------­ .. ­ -­ ----­ 2 compartments Company 3 Th! Sub-ward 10 Fanner Xuan -------"-'~ --­ 1-----.. +----_.. Hll Van ----­ -------­ 4 Sub-ward 10 Worker T[ r-s---­ - Nauy~n Sub-ward 10 __-------L-'=' Farmer ---­ L.. ___ -'---­ - -+-­ -----.---. 121 EIA ofDa Nang Priority Infrastructure Investment Project - Phase 2B - Supply-water Garbage Project No. Name Address Education Occupation Kind of toilet Depth Others --- sources collection information '--- Van On Tran 6 Sub-ward 10 Housewife Thi My LeThi 7 y . Sub-ward 10 Worker 122 an Dau tu CO" sa 2B Appendix 8-4 Minute meeting of consultants, local authorities and community (! I' ,, ~ J '\ I, ... ;.; " ',' , ,.' .. l..'" , '" " ) 123 _ DTM Dl,l' an Dciu tzr Ccr sa Ht;I tcing tnt lien Tp.Da Nang !S"-.i_G_i_ti_o-'-t;l_n_2_B ______ _____ , \ . I! i '. .: ,­ , ) 124 DTM an D6u tu C()' sO- 2B B I f: t\ B A. ~\ ~r II A.\ .l VA \ C ''; C; ' i } \ C; f);\:'\11 CI"l' \ T~C., DfF"'C' , ,i. I TpJ'(Y,,/' \ ,"\ 'F HO (' .~, .'. , .. ,,\ . \i/)' ... c. . ) \... ,.. n t '\ L\' I\lCH 'fRU'(J!\G y',A Kt HO,,:',,('H T\I IJf>{H ('l" 1)1,1' ill! d;1u 11r cn ~i, IU.I 1;\ng Irll llh. ill,tlli; ph!, ihl '\ 1. Thiri gian hl.'p:~t::l.­ .. n~\l'l: I 1,'. . 2. Hja m61l1 !It) jJ:...to:,;,) ." .. i:kl.~: ..~.,\.. /"""'-1 ci" lfi J .J 3. Thiltlh pilliu thum lilT; ..('lltn: \, ... lIme \1 On,,: (hil: .... ......Chin.: ~)ng ,.Chin; '. ()11[ (ba): ....... , ..elm..: n; .. ~. !,\<}i dung, cuVe hqp: Tn dn gi6i thieu v0 Dlr (In lU ('(f :=,(' h,I" ~nl :;(1) 'fh:'.:'b (phuong ,in luy511 dli tier [r~n ph\llll '\'j b::ll';;l !']llli'rng " xuaL Tu "(1 llhu c~nl \£: 1:6 In) djnh elf 'rh~lO lneu t: ti(.~.:­ plli:p gic;l}; Thiell 5. '\ ki['Il ciia c(Jng di\n~ \l~U"\1 2~Sp ~ (1 t(~ \',\ h~>ll) .. ~;~:~. J , . i ~ .'{ .I•• . ", . . l~(!. i'I ..... ,I"~ 125 DTM Dtr an Ddu ttl' Ca sO- Hc;z tdng Uti tiim Tp.Da Nfmg giai aoc;zn 2B .I)~:i(li§l}.!:() J \~:~_ FL~i 1t\ ;1\· ii..:: 126 {m ndu tll' Ca sa doqn 2B ('(,r,\;\. 11t.',;\X ~ ~h)1 cnf {)y~' J~l' . 'I'V dQ • UA:"NG m'),\ ;>.;\ Hi,H Utt; !'oCUIA. 1)4~' '~p • 'rv do. 11.011 VANII sACH 1>~II:UE:V/lf() nAN TIIAM 1)1.1 I'IHf:N TtIAM VAN C{JN{; nONG I ", - ,-­ - ' .. (I'lw c "!' 'tIp luia ('do I.Mnh gM (Ik d(;J/j: If/f!i trtdrug l>V dtlDl1u t1l' xQy dVng ('u,,; "!I tiing tru (;ell Thimlt ph(] Dii 129 DTM tm Ddu hr C(f sr} 2B C9ng hoa xci h9i chu nghla Vi~t Nam D9C l~p -TV do - Hi;lnh phuc \" tj r , '. J \. ;: ;:: i, i:::, """/ , , . Li an LU\ , ~': ; ~i ,:.: \ ,'; "" t (':' -; (! ,~. ;, i:, , ; 130 DTM Dl}' an Ddu ttl' Ca sa Hf,1 tdng ttl! fiim Tp,Dcl N{mg gia~ d0S'n 2B CQng hoa xii hQi chu nghla Vi~t Nam DQc I~p -Tv do - H,;mh phllC "-."f,' • nf r " I ", H.\:' 1 \ \, ( U.\ \' II (; L\ 'L\ C t)(F' r~ J 'f ( ) .\ II QU:-\N L' i\ I (}I ~l In() \ \ I'~ E il (l\ ' liT '. f cr' niT alt d:m tp tli 1. r juri giaH h.t, 132 DTM DV /In Dclll llf CO' sir Hc;t tclng Itt! lien Tp.D(l N3ng giL Ii d()(II~]B . . .. .' . (~Q:-:(; HOA.xAUQlb,v.S(;fllA. D~t\~p ~Tti'tf~ . DAr,tHsAcJtcArls Pli(~r:HQPCONQc . (V;; .tt6" C?If,g dang piffle V;llgp [ul,(} CU() I.JUnli Jtid uJc'd?ngmlJJ DCr 'an b 4i1tiff:xiY U¥J1g CiF sv JrfllS.ng u-ulil.". 'Ilumlr 1'1$6 1M 10 133 (.:c'>".; I!().\ x.'\ nOJ CU\!· N(';ldAVJ~T "'AM Ui',., I~pf" dD~ lI,nh pbil.: \<. . UANU Sr\(:l:t()~J ~li~(;!U<) nAN" . ~UAMD'l PIUEN TBA1\f'VA.N C¢NGf'iO~Q}~; .'(Phv.c vfl/~p ban cao Dtinhgu; uk (Ii/UK m"ill'~~ . " . f)v all D;.II(~)'f/fmg Cd .~(I . if, tOng t.ru t/ln ThJnIt phD Dd NIHg Giili d/.J9nlB) - TT l>,A cni 134 DTM DI! an Ddu tu Ca sa H(J tdng uu tiim Tp.Db. Nlmg giai doqn 2B C'()'\('IHl.\ 1LIlt: ;\GllL\ V1 '-1I i.~\:.u,. t n.... ~:;;:" \ ~ • . . d Oug (h:ll. ..... " ,...... ' (Jug (lX'll." .......... " ... ,.,.,., ...... " "Ii B. i)(li rli?11 ('()lIg ZI' CP PJnil /ri#1l IT{I tim;: Tilling Long I v .(" l)n~ t 1':\ J. (lui:' (h~IJ", C'Ll.lc . U:, 1. l'U' V[III th6IJg b~tl\ eLu l'U\'U .\~l \l~ r,h"HIl vi l':~;i;'! i: . .', :,'-' \~'l ranil (l'Ii! D~( ,lll FHu IU ell' ,,\1 h;,! !tlllg Uti li..:!! thanh I'; D:) ":~::i: lren di<1 biul plHr(rng. unN!) plHl'\rn:; i,:ung dp elw ill vl111 ,bill! :;tH.h ctl\' J. UB~D phlJl'mg X:ll' nhzm lll' \'{m dfl tjc~n himh k}li\C, .,;,:r di~u lr~t (ili S~l:l hi¢n iI:,lllg etl;1 " ... , h0 hi anh Imons hri d\r <1n llC'n din \1;:!l phllO:li.: (Ct', d:mh s:idl 1;('111 Ih(~n I " .. j 1'\.1. l\ ...•. ---,. :'( . '_i j .., ...... ,-_ ... _._---_._-----­ 135 DTM Dl;l" 1m Dau ttt' CO'sa Ht;l tang u:u lien Tp.Da Nang giai dOt;ln 2B (!',(iHO '\\\I(}I{iil '1:;\\'11.1,\\1 l>~i 'I tt i:-,; ;! ',' l,:, BIL,\ '\ (~ J)() \ C D.\\JI (;1:\ '1 ..\( IH)\C \l()lf[{t ',C \.\ l1 U';'i: I~pflr do - n,llh "116,, , DANH SACH D:\llHt:C!H() U/\N , 'THAM Dl/ PIUEN 1'1IAM VAN (:9NG DON(; . (Pltflc Vfl l/jp btio nil> tHin" gid rJ. d~;lIg moi tril'~g d1pfg Cu .fti h{l Jt1ng 1rI./ liin TiItIflh pill; Va Ntm!: (;iai dQqn2jJJ DD.cHiNU QUYEN DJA PHlfUNG 139 d()~/I1 2B D)\J\H CIA TAc t)();\K~ TH IHOI TR1J'(JNG v.'\ Kt IIOi~ Dtl' an dAu tu' (~()' 5& h:) tftng ll'll tien 1. 'IhM gian bgp:.. ><. gio, l1g,iy, ,....tking. ..... nan: 20 I (: ") }'\. d';: 1 _. vIa H~illl(!p: .. " ...... Cll~;c I\J, . ~ , •. '~' r', Ong (b~I): f:'''t'i.~'jJ,''' _ (: (J u;v.,. n ... ChCn: qi.... t, Ollg (M):.......... ..... ........ Cln'IC \'ll. c)ng .....ChlIC V1).". (lng (ba): ... Ong (bl): ...................................Cht[c VI,' Va d~i dicn c;;ic he) trong vling dLT 1m ~Xem danh skh (1[n11 4. NQi dung cu{lc hllP: Tu v~n gi6j thi~u v~ D~r im d:~u tu CO' sa h~ tfrng uu li~nJ 'hanh ph0 Dil N~ng (phuUllg till tlly6n chi ti6t tren ph(lln vi diu bim xaiphucmg v.v). ItT vAn tdnh My v~ nhfrng tLic m6i tnr7,/',' rl v1:~. ~ ")./J {( J Nguc)] .... ,(, ' - - - - - - - - - - - - - - - - - - - - - -.. ------~~---------- 140 DTM D¥ an Ddu ttl' CO' sa Hg tdng U'U tirm Tp.Da Nling giai aogn 2B Ngtfl.l ';' v , . J.. , "...~.~'/!r. 1";..,' V '"_! ., J..,;- ••• •• Y,tn·, .. /J()">-';"..,,,l .. l . , . -~: r ' , '.., .... }:v:lq.. . . :~~ .. , •• ~ ••••••••••••••• , .... ~ ~'4 i .. .r.p.t:y.1.:. " .... .U../..(j............ . DTM Dl;< an Dau tu CO'sa Hq tang Uti lien Tp.Da Nang giai tfor;rn 2B \1gl1(yi g(Jp )' (H9 \'a tell) . ..................... ... ' N gu6'i gbp )T (By va ten) ... , , . , ......... , ' ........ ' ........ ,.,., .. "') ,gual gop Y (H9 va ten...... , .. " ...... , .. " .. ",., .. , .. , ...................... ' .................. ,.......... .. '1--' I ., • • Ngurrl gt'IP Y' (H() v::! len) ............. ,........ "",, ....... ,...... ,' .. '''" ... ,.. 142 DTiv! an Ddu Iu: CU sa 2B Danh sncll can bQ pIll)i hQ'p cong vi~c va d~n tiu'o'ng di€u tnl KTXH va khao sM tai s;'lI1 Dv' an d~u ttl' W sir h:} tAng WI tien thallh phi'; 1):'1 Nrtng HI? va tell Chll'C 143 an Ddtl tu CO'sa dO(l11 2B ~~~~~~~~----~--~------~----~~---- ---------------------­ np'(' 11(;,\ \ \ Ilf)! UH \, rnL\ Il-IA \' \C DO\(; HANH GtA 'lAc n()NG IVl()I TRU'CP,G 'vA KE no,.;.CH QUAN L \T MOl TRlf(Ji\,G vA KE IHt\CH TAJ HINH CIt Dl.f an c1:1u tu: CO' so' h\l tfill g U'lI ti~n thilnh pha f)a ~~ng 1. Thiri gian hQP:, .!lii·, ng:iy 2. I>ja r!i~m llW, 3. Thanh pb~n fbam d\r: Oug (b,l):. ang (bit) ., ......... . ..Cbn<: Vi," ()ng (hcl) ...... ,.Ch;.i,·" ();,g lb;l.}: <> . . ChIle v\:. ()ng (b'l): ... . .... Chlw V\i Va It\li di¢n cae ht;> rrong \'ung d\f al~ (xem d:mh eli:;!! 4. N{\i dung cu{ic hew: TU' \'11 gi&i thi~u v~ D\f Illl (tau nr w sa h\l lnI ~i.~r, Th,irLfJ ph6 Dfl .:\";:;ng (phuong an tuy~n chi 1iih tnSn phi,lri1 vi cia b:m x5/phm1ng \'SJ T If vAn trlnh bilv 1'2 nhi;mc tae GOllg llloi tmt;n:: Ii mil hini! quim Vi, k0 h(1':~'fllhLll: hi(;~l • [1;;:1'-" \'~ eilc ~lllh litH-:'H:l (htl hl~Ji c!{i:, Tn \'t.~1 lrin.1~ pitnl1t', m~it t,:lng.. dun gin d~ XUi1t U!)U ,ill \-'[~ i;,~ tro- pillie hi\i Cl~i),: S();lg, \,<1 tili2-!, (:(,,( k111.1Ji,\i djnb elY dj xu§t (khu {{Ii dinh ell .10 )"uCl1 eli) L:/.ts;..ic:' f.. ••. •v-r.:z..- ' ", ,;(), b ~l tt1!l g !n! p nl' 'L pldil);'t\,ftllg ('litre \~, ; .. 147 DTM DlJ an Ddu tu Ca so' Ht;! tdng lfU tiiin Tp.Da Nang giai dO(1I1 2B ON 1. T1H'ri gian h9rd.'i ... gl(), ng,~y.;; ./. , , 2. Dia mslU bQp: .~, ,;,.\'i.l . \.\ .. ~ .... '.) . , ' 1,(" 1"/";'" . .(1,,"­ )....:),-;:. ,J.LOl/~" J 3. Thilllb philo {bam d~l'; Ong (ba):.f~}i..I.:t;:·;'· .. . ...... Cht'.l'c v~; , cr LFil) \.j uJ. 0 Il", (Ll.:l." ........ X'. v{' ... tl; ", ,,1'.• ...........ChlfC Y\). 1 • On er (~A)."4~';{L':" 1\1;'>1' ,l! , " "' .......... Ch(rc \·~I .. .ie.W ()ng (bEl): .. . .... Chtrc \\1." . ()ng (ha):. ......Chll'c \\1 .... ()ng. (bJ): ... " .. " ... .. . ............... Cht'rc Y\l .. . ()llg (h:'l): ........... . Va J(ti di~n cae he) trong V11J1g ch,r em (;",em danh Site' • 4. N9i dung ClIijC b<)p: Tn v:in gi6i thi~u v~ D~r il!l (tlu HI cO' S('t h':\ tAug He, tien llHlnh phc) D~l N~ng (phuong an tuy~n chi ti&l nen ph~111 vi diil ban X~i.'phlr(mg Tu v::1n rrinh bay v~ nhiing l{lC d(mg !l1()i tn.rang ph~il sinh v;\ bi~l1 phNGMC)' TRU'ONG vA K(~ HO/~CH QUAN LY ' M C H TRU'()NG V A KE HO~CH TAl DTNH CU' D~l' an d~u tu' CO' S('J' II:! tftllg U'II tiCn tklnh ph8 Dil Nftng l. ThOi gian hQP:." ... gitl. ng.ay .. ,.,,(h'Hlt'..nam 2010 it·~ pAt I . ';j:;,.£; .., 0' (IlCm h 1,lI).. ........ : ·:v·\ . ,"",%;"'1'''7' ,,' '[J.l':; , ,(.~'•.i( ,.: . . ) . ;: l' ) _. III • 'f 3. Thanh phfin iham d~l': ()ng (bA): ..............................etHIc V\!. . .. ........ "", ~ ). ( ')n", (b a.".,. l".• P. ,~.' L"".,'1, .... ,..........('11LlCV'l.,p~~ D O ';j; ... >"'.,:;: '. . . /" c.;"". 1""""u·Dt::7· (Jng (ba):" ..... ,"', ..... ,..... , ...... ,..... ehU'c V\l. . . . . . . . . . . , ....... ,." .. Dng (ba): .. , ... , ...... " ............ ,....... ChCre V\l.. . Ong (ba):."" ............. ".. .... " ..... "eMc vv.. ,.. , [)ng (bi)): ................. ", .. ,.'"." ... ' ..Chuc V~l.. .. Ong (ba):." ,., ............. " ... , .... ,..... "Chuc V\I ..... . Va d{ti di¢n cae M trong VLll1g d\T an (xem danh such rlinh k~:rn). 4. Ni)i dung CUQCIH]P: Tn V~l1 glo'i thi~lI \~ D~r fm d£lll ta w s6 hf;! t~ng rn.l lib'l Th h1nh qUEm I)' V1l kE hOl.1Ch TLr V~l1 trinh b(1Y v~ elK £mh hu(rllg thu hC)i (tAt. di'll btl phclng ml;l.t b~ng, don giti d~ xuAt va nhu cdu v~ h6 [n; phvc hC)1 CU(H; s6ng, gi6'j thh~li C';II; khn 'rid djnh en dS xudl (khu tI -fJUf()'NG vA Kt HO,~CH T D!Nl1 elI' DIY :in (11lu tu co' SO·III.l t~fJg I!"II lit): Ulimh 1'115 Da N~llg L Thiti gian hqp;.... . ..... l]u·mg.. .nilm :~[I 2. Dja di~H1 }l()p: ...... J~:.)Y1.~). W~NP.~. • ,f \( 3. Tb;'mh philn tham dl)': -.l '! v" Ong (ba): ... ~Nt~~ ... ,.RttU... D~Ch{rC V\J .Ct:'/'M.. Ufir:fJ).,t.J.~.tf~ Ong (ba): ..... U.F.. 1~.if34ii..r:'h.:tIAt vi tti va mong mtl(~n \'~ cae h~l tEmg trong kim TDe) Th,\o Ill~[], tj~p nh~n y ki~n d6ng g6p CIJa ct)ng. d~'ng d6i v6i de nie d()ng mOl trucrng, bi~n ph,ip gi::lm thieu 5. y ki~n Clill c{lng ([iing Nguo-i g6p Y(IIQ va t(~n) ....... &tc1·11\.~~1f-~Io11. :~. ':1:.Hh :dt .Jj4;cit.'a4~.: Rf..,.,~... ~..¥;-..., . jkwJ' .//J'o"!IY]J...ck. ,.;Z;«/~''9'" !let-1(-71,}. . .. ..... .\ (fl····, /l4.,. -;: .. O/....... I"~ ' v1t{........ ,~(!fl1~_.Ll,;j t.N,.'... . '. ,(.' \d kd! . . IT· I~~). . .Iii'> ,"t)" '.. . . . ;'1-. .......... jI.{, _-/1'1::<1 1 ' - ' / ... - ' . ./U / -t--L~-' / ' 10_ ... - : ~7J; >M-~'%l.~M ,/ 156 DTAf an Deil{ ttl' CO' sir 2B l';~i?i£r BQLI):~_ ~.lS~~J!. ~~:~ . T.0 !l(~ .~t~~~). .............. ".. ........... J_ __ 'I _ . _ .~ . ~~_r- L. . _.· ..~.-._...D._(.a.(_;..:.h.~~;.~ ~;._.l_~.~ a ).11l . -J 158 an Delli fuCa 2B Cldrc v~ L . _:;)q _._J.A....~_.l.I.UY.&. _ ..__................. i I ~>,li.:f!iL~~1A:~-. . . --f.. 'li~F~Ji~.-.~ . - I~J)I . . . .fiA~.~'~-.,,_~~~IlL!l---i. ~---!>?;_~tkvJ~.J!1M-.......__.. _: ___ T5.~)~ til~~_ L. I " . 1 ! i / i 11:::­ .:--~~ '-" 'f~~ft~~:l~·:~.-··'.I····--7~:j:;:----.:· ~ ! j\J . , .. " -rt -:­ ; I.!:: ,it / ' : .1--}ti~t~ec;~:4t--·-J)~L~ g f-"~ .--AJlI._t.V~L~. _ _ _Uo..J:Lm : 3 I ,,~ i 1£-' ~ _, ; .........._.--.--. -t~-. -·---·· - . ~--.-! --.+. -.---.. -·--1.----·-.---.. - -......----.---- .__..-_.. . ~f--··----·····------·; ~ .... --.~ , ···-;·-···------·-1 .! 159 an Dc7l1 ttl' CO" sil 2B C(f'iG 1H:)A )C\ 11<)1 ClIO '\(;!I£A V1rr :\AiiI U(a: l~lp ~ do - fL:lll' plItt(· BH1N BAN THA>VI VA\ G DONG HANH GIATAC H()NG Me)! 'rHUONG A KE HO,,:\.CII QUA.N LY 1\101 TRIJ'()'l\G vA HO,~CH TAl BINH CU D~l' an dfiu ttl' cO' so' h:~ tftng U'U tWnihault phD tH N~ng ()ng(ba);" ... ,. ......... ,,. ........ , ... ,.,Ch(rcv~L. C)ng (ba): ........ "' .................. ,. ... "Ch(rc V~L .. ()ng (btl): .......... . ........ChuG VII, ()ng .. ,..,. ........... ,. ...... ' .... ,Chire V~I,. ()ng (bl): .. , .. , ..................... ' ..... ,.. Chirc vV· .. · ............. , ... ·..... · .. ,. Va d~li dii;n C{lC hQ trong vimg dv an (xcm danh sadl dinh kem). 4. Niji dung cuVe Ill}}): Tu vAn gi6i thi~u ve Dv an dAu ttt GO s6 hi.i ubg uu tien Thanh ph6 Dil N£ng (phuong an tUYfnchi ti~t tren ph~il11 vi c1ja ban xiVphll'(mg v, \1). Tu' vi~n trinh bay v~ nhfrng tilC d<)ng m6i tnn'mg ph{n sinh va bi~n phap ginm thi€u d@ xufrl, mo hinh qUEm I)' vi! hW,H.:h liwc hien TIf vAn Trinh bay v& cae fmh hmmg 1hu h6i ~1Al, ht) gil),] ph6ng m~t b5ng, d011 gia d~ xu~t vd nhu diu v~ ho tnJ ph\lc hi)i cU(k sfmg.. gi6i cite khu Tili djnh Clr d& xu~t (khu tai dinh CU' d0 xu§t do cf)f1g d(lng elf xuAt vi. tri va mom~ , . -'..... v€~ cQNGM()f TRU0!\G \:A KE HOi~CH QUr\NLV MC)' TRU'()i\'G vA KE Ho.~~C·H TAl DINH cc' D\f {\II d~ll tlr co' sil' h,.! tilng In! m~n thllllll ph& B:i Niing 2. Dia diem IlI}j);.."", L\(~>N D, L .. " Jill;', C{'fd"j' 3. Thilnh phfin tbam tllJ': (' .lIil):, ,~"" Jug (1. ' "UO\IJ) ,.Lv.\O/\" ,tJ.V1..K'j' """'" ('I ' ", (.- .0 I ,me 10\1, ' C7~!kl3fYj)!iIr,~" ,. ,""" ,.. , c)ng ( bit):. , . ".. ,., .. ' , " .. , , " , " . , . "Chue V\L ()ng (bet): ... "."., .. "" , .. " .. Clllh: V\:, . ()ng (M);",., .. "."" .. " .. ,." ..... """ "Chire V\l .. C)ng (ba): ...... " ......... , ""., ...... ,,,.,,.Ch{{c V\i. t)ng (bit):"" ... "." .... "" ... "" .... ,."C11(n: 1'1,1" ()ng (ba):" .... ," " " "."" .. Chlrc \\L. 4. :\',ji dung cUQr h9jl; Tlf \~n giai thi('u v~ lJLr All (hb ttr <.;0' SlY Ill! tfli ;len Thfmh phI} Dil, N~ng (phmmg all tuy6n chi ti8i tn~n plWll1 '\'i elia him xiVphucmg v,v, fa vitn trlnh ve nhung lac mbi m,img ph;ir snli v,~ bi~n ph::\p giEnn db xu~t, 111(' hinh qmin I)' vi! kc ho~dl !bl,l'e hi~Jl Tu vng m6i trucrng, hir;n philp gi<101 thi~ll 163 DTlo.1 D~r an Ddtl ttl· C(J sa }/(l tdng uu tien Tp.Da N{mg giai ___- _ _ _ _ _ _ _ _ _ _ __ _ 2_B •• , " , •• ~ , , •••• , •••••••• , , , • , .. • •• """"'" , ••••••• , , •• ,_" .,., •••••••• , ••• I •••• , ••••••••• ~ • • • ~., . . . . . . . . . ~ NgtTbi gop Y(Irq Vi) l2n) ............. _" .. Ngm'ri y(HQ vii ten) ................. " ......................... " ...................................... Nguai gop y (Ho vi ten} .................................... . 164 an Ddu tu: Ca so' 2B T\girO'j gop y (Ht;) '1'3 ten) ......... " .. NguiJi goP)' (Hg va t~n) .................. . 1\gu6i goP) (1i9 v,l t~;nj ...... .:.igulyi goP)' (H9 va ten) .... ,..... . \, , , \.' 165 DTM D(I' an Dtiu fIr CO'sO' 2B D:\NH SJ\CJ--I cAe Df~I Hi - THA1VI De' / . lharn vftn dIng th~)flg t\li . .. l.., lU1Q.. .!$?;c. ........... ,, ., . . .. "ntim 2 0 10 Ghi chli 166 DTM D~r6n 2B W\,\ xl" IH)1 UE";Ctl Vll::T SAl\1 00(' l~p -, Tg do ]L}.nb phI,,' BIEN nAN THAlVI V,AN C<)NG f)A'; ftl I I(/u-' i,'hC-l-1-U, / L, 'I" J, Iluluh ph~n tham til.!': ()ng(bil.):'.~wfk·T*\t.0I.J..,Nk~.ChU', ,;;"... ,aT/;V~NQtf~ .. ·"" ,.. "., .. ',. , ,"'- I-Ie On; (ba): .. , (tn·) :r;h(A~, .!hnll""" .. ,Chi:, !\'f ,.C&·:DC-,~Xy. "'"'''''' .......... . Ii ()ng (bit):.... ... ". . ...(,hlfC \ .. " Ong (bii): ........... " ... ,., ...... ", .....Clllfe V,l (lng (bil):., " .......... " .. " .....Cl1l(l' , ()ng (hi):,., .... "" .. "C11\:[, \'~!. ... " ...... C)ng (bit):.,. , ......... .. "" ... ", ..Chtl(\ \11 .... , ..... " " " .... Va d?i di~Il cile h9 trong vlmg dv {tn (xcm ti:mil sl~ch dinh kem). 4. Ni}i dung cUQc IH}p: Ttr vim gi(li thi~u v~ Dl! an d~u tu cu Sf1 h(,l. tJng lnl ri~n Thanh ph6 D& Nang (phuong Em tuy0n ehiti~t tn3n phllITI vi dia bun xiVptnri'rng v.v). . Ttc viln Irin11 bay v~ nhiing tac dong m6i trucmr pMI ~iJ1h vcl bi~n pbljj) glam thi~u ..:l~ x~d.t. mil hinh qlliLll 1)" va k~ hQ(l.ch tJwc hi?n , TII van ll~lnh helY J~n b\i giai ph6ng J11{lt b~ng, dun gia d6 xuAt y:i nhl! cau h6 Irq ph\lC Ill)! CW)C cie kIln Hi dillh CD (H~ xuAl (kim [iii djnh ClT db xuiit do C()l11; dtlllg d2 XU~l vi Hi vit mong !1lU(\n ve die h,.l tAng lrong UlU TDC) TMo lu~n, ti&p nh~n ). kit~n g6p ella (t,\1 vCil cae tilc di)ng m6i lruirng. bl~1l pi1ap giam tbi~u S. y ki~n ciia cgllg (lbllg 167 DTM DI;< 1m Ddu fir C(J SO' Hg fdng flU lien Tp.Da Nang gia~~~{;r7' P.ttro: . 11&.:j..} 3. Th?ll1h philn tham dl}'; , .' , -"'.(1 .... ).4. Ong (ba): .... N~+1.J.)Q'\lAfI"lC-", ..... Chuc ' • ~T' 5t 10. p~T~J' Vil.··· .... \.,;. rA·~f:\. J ...,7.. ............. 6ng (bil): .. ... J~. tb.t;, .. tl{... .... Cht"fCV1.1...... PPl~I/O:IlN/J.~,. ........... . ()ng (bfl): .............. : .... ,...... ,' .... , ... C11(l'c v~1. ................... ', .................... .. Clng (l)<1): ................................... Ch(1C Vll. ............... , ........................... . Ong (ba): .....................................Chue \'\1 ....................... , ..................... .. Ong (ba): ............ , ., ...................... Chll'c ,,\1. ............................. , ............... . Ong (tXt): ............................... ,..... Chlrc VI;! ................. ' .......................... .. Va di;li di4n de 11{> trong vlmg d~r an (xem danh sich nioh kcm). 4. NOi dung cuVe lH)p: TLf van gi6i lhi¢li v0 D~r im d,lu til' co so h~ t~ng uu ti~n Thanh pbl, FXI Nang (phuong an. tuy~n chi tibt tr011 ph~m vi elja O;-ln xaiphu()'ug Y. v). . ) , - Tlrv~n trlnh bay v~ nhung tal d(mg m()i hien pluip giilm lhieu de xLlat. m6 11111h quan Jy vii k2 h()~1ch hj~l1 • Ttr van trinh [n't)' vG cae anh Im6'ng Lhll (ILk c16n bil pl1\)ng m~t bang, don gic\ dg xu.1t va 11hu diu he; trv phl.lC curle sz1ng, gi6i thi~u de khu Tal dinh elI 06 xnfit (kIm tai djnh cu d& xuflt do c(ll1g d6ng .. k,:v.o-:..t~Jl. 4........ ·, ... ·.. ,............... ,............,..................... ~ 171 DTM em Ddu tll' Ca sa ~ , ........ "'­ y (H9 va t~n) .. Or.4;. f41M~>.I.l(~'R"'.. , ~ "() t./~ . . / ..t1ou:.l/~./~,-............ . » ••• j) I 1 J.,,:, / 1_ I - - - ..•.. '- . •. . .CW....1 . LJ' ./It!.(.£f. /Y<.J . . .IrLA. r.~. ar.. ,... I .' I ,j? f ,/ a:;;..~ t'",.->r: · . f.7~a.;t, ~Ct .................. . 7 ··' ;! . ~.-. I - 1 - --1:, ~ V n/ ~) A "-l) " ./ -' ... """ .. , -.: ,~w.;t.t1'.,.{ ~.~,ct:Y.!'J..r7' fI~tpw.~'-:<'l~Yf' .. v6:.~(7.~~ .... . ... . . .;/zl,./"¥, >4"n~~ ......,.>>' ............ >..........• > ,.....,..~.- ../-././~ /-,,_~ '/'" ..................................... ,-,/.---' '" _ ) J .. > .. . . A'.~. .~ .. r~' btl· /}I}:q. «u.:;a. ol:iJ..t:..AJ..lfW. ......... . j .........-. .... .. . .. .. .-- l ' /} /' ; - . ....L_.~, -/ . . . . 7_ II ....lIDW...) ... Gf~ ..VCrt>· .. 1J!.r0cl'Y'J··.,..r·7·~t:lt··crV···,.···· ..................... 'gm)'1 . . . ,~ N· ., gop y ('119 va ten).. .... tf7t . .. : .. ,. .. ..e .. :x:,a.k1 ......................................... . I1/ - r:~ .r.~ u... A. ,... / II.' -i +U AIl,.,' r--.(,:- l. I' iJ<"" ......... _., .. :/:'fPY(j' ~1.. 7'lM... ~C'.. /:/P"I"1H'lr''i'f' .a,n, , df:'/.1. cr~ .. U':f.?-. aG...t7 .. ~ .. .. ... ......~.. t4t.. '4k7~ ..............................~. '........................".. . . . . . . .. Nt'lt(yi gop \' (Hq V . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 172 DTAI 1m Ddu tu Ca so' Ht;z 2B Ngm'Yi gop YCHq va ten) ........................................................... ,............ " ... Ngm:ri gop y (Hq ViI ten) ... 173 DTM D!< an Ddu tu CO' sa H(l tdngLt"i!!ien Tp.Do N{mg giai d(!.:-.(m_._2B _ _ _~_ _ _ __ _ 174 DTM DI,t' an Ddu tu' Ca sa HCJ tdng tnt tien Tp.DiI Niing giai dO(1n 2B C()NG ne).-\. H()I CHU NGnL\vn:~T NAM DQc j~p - TI}' do - H~nh phi)c IUEN BAN THAM VAN CONG HONG nANH CIA TAe DONG ~VIOI TRu'()NG Kit HO~CH QUAN LY MOl TRuONG vA KE HOACH TAl l)INH ell' Ott· an ({Au hI' co· SO· h~t dng U'U ti~1I th:i1nh ph& Da N~llg 1. Thi,.i gian hgp: ...... gi6, ngay" .....thilllg ....... nam2010 ...._ . .• 2. f)la dlCm 1~91): ... "'" .tLa- : ,At..:4.f?:1J' ;fuMh-,t·· /Inl:4,*~. liM":;;,,.:). &.. d\lY>.-l.w.) .,,'()ii:N::>."'1 -- 1 --:-.1 - ,.. ,/" ~ r., -.. 3. Thanh philo tbam dl!: ()ng (ba): .. Nt-~.Nffo.C. ... &h ..... Chuc Vl,l .•••• P.crJ:ktY.v.tJ.."'~i ......... ·...... ?ng (ba): .... r~.~;t:~V\-~.~C\~~.,.Ch(rc v\l...... d)?.e.~L.~.trir.-. ............... . Ong (Ix\): .................. ,...... """ .....Cht'rc v1,l............. ' .............................. .. C)ng (ba): .... ,..... , . , ............. , .... , , .... Ch(f'c VI,I., .•...... , •. , .... , .. , ...•..•..• " ..•. " •. , •• , ang (bfJ): ....... , ............ ,......... ,',. ,.Ch(n.: \i1,l ............... " .. " • ........ ,., ............ .. ang (bll): .................... . ." .... Ch{rc V~I ...... ,,, ............................ , " ... .. C)ng (btl): ......... " ............... ' .. , ...... C1111C V~l.. .. . Va dl)i di~n cae h(l trong vung d\1 lin (xem clanh sach afnh k0m). 4. NQi dung en?l' hqp: Tu' v§n gi6i thi~u v~ DV ,in dAu tu CO' s0 hi;! l[fig un rien TlHlnh phb Du NRng (phlrong an tuy2n chi ti~t tren p}Wm vi dia bun xfiJptllfirng v. v). ~ Ttl' vd.n tdnh bay v~ nhfrng tile d9ug m6i tnrang phat sinh va bi~1l pIlap giam tlliGu d~ xul1l, m6 hinh qmin ly va k6 ho~ch t!we hi~n - 'l\r v~n trinh btlY v~ ca.c <'mh hUOng thu h6i dat, d~n bt'l giui ph6ng m?,t biing, dan gia d~ xU~l va nhu cAu vi:: M tn;)' phl)c h6i eUQc s5ng, gi6i thi~u cae khu Tai dinh ClI d& xu&t (khu tal va dinh Cl( d~ xudt do ci)ng d6ng d~ xuAt vi tri mong mu(}n vO cae h<;t tAng lrong khu 'llJC) -_._--_._----- -------~----.--.--~- -----­ 175 DTlv! em Dau tu CO'sa 2B Nguai gop -, -- I y (HQ va ten) ...... ISOt.('...;..... ~-..~1A l - Ai) _ I I ... ~....·............................................ -:;-:. ~7 / ;--. J ..... ....... ............. . .... ,.. _........ , .I ,,_-:- -/)' 1'il I" I .. ~n .. :;;6.11..fr.H.. :r~ ....1C'l~ .. tYft..G. .I"\~•. alat1...... ............. /.- 'IJ.....t-.l / I..£ .... } ---:r'~ /, I ...•• , ................1.( •• fXI •.ju.t1J.f.I ../.IWo ..t:IW.C~ .. ....:ft'Z.(;.on.~~:aH.ta:.«.Af<1.{."~ .. I I ./ :1 - ,/ /. . -, ;~ I - , ./ } / mlJ. . . fv~k1 ..,,~..tf. . dtZ, CC<.c. . ,.:Ll'r'a'. .. , . -:'J.o,.r: ,~,):c.p nM ~ ........ .. J. - /., .....1..3 ..... / - ./ I " .... f J ...... ....I~f: .. ~J;?.~.vc.1..-".11aJ09.ca./J .. ~ ....((.k... 7W¥.'!"f.f:L"t;1&...tf{.~ ......... . I .::; . v:; ) " -.... -- ~ ....... ~ ...~4.+,.~..~t. ./J'lf; :'C()ry '7' ~t1Irl:~..6p:<;,. -; r--.' - --" / _ . ~4-2 ~pr. ..~./ .J • .. ..J ..... .. ,,~ ~ ' . ;." l\gUO'l gop Y(lTv va ten).................... ,.................................................. ,.............. .. - - - , --' __ ./ Ii /'...t. .. ,- ) /' # •., -.., ........-:-:-........a. '~""'1' .;:J.l.4.~. ~kt .C(~'::~-1. .. 4th,:, •• ~.J$~. akkl. .............. ............ u } ~./-r:.- J / .. / - ' . / > / ........- .... ,... eM. .' .. ~ . .;;t;~. d-~ pJt'l.a.•.."O:044 . . ~)1. v.ch.'.............. ~ ... .... ~ .d.;:;;t... . II;; ':':tIM:.;;ltb. .~fL . , .. ,........ '" . _.. . .. . .. .. . ............. t:.'/ . ~ I j;..,. - L./~·' I j.J I / / j- ........ - .. ,.... . '.' .~tJ."Y:1. c,0(,..~.. ~t:;:l.n. . . ~ .. ~f .?o/l....... .-Ad-:"p'r:'5" ..fJ2. . . .'.t.. J-..'.J~ C>.. )./. _1 D"" /--. J.:' - J / -. / - /_ ./ -..J j, -, . " ./~(.? ...3.. ..~ .. ,~" P,!4\/,-:)... ~ 1. di L' .. 'Me .-f~ ,,?t!.<. .. h .. ~ Kj'l:1,k'Oj""f1!A.1 ~1~ -,< ~ , "II '.0)' ngUO'l gop y ( . Q va ten ... ,............. ,... ,." ..................... ,.................. ,............... ,.. ..... t-' .' ,­ ' ".. I --1--) - ~. / .Jl, / I P1 " . . J . -" I - ,/ ................... I1.!!.~ .. ~,.~;tM.~,.cap ... tJ~.. ~.4.u,m.Jo.vt:h: .. .L~1.~. l -1_ ~ ..t .f)..... J.1' 'J # ~ l. -: J.r / r • ) -;.... .. :.¥M':'. ~ ... ') .vl~ .~r.\..~ ..t?j.l:D,~. ~.:> .:JYJ.II.;n:·/~ . .~~. ~.: .. '" .... ~." ..... ........... " , ..... ' ..... , ...... ......... ........... ............ .............. , .... "., , , " ' I\J ') , ;) l ' . ~ /.p "' /.:J ,...•~" .. ·I':}\.~. -tAt :r.b.c.. .. !:M, .j;~{!.r.> .~J:.vJ~.". ~r.-.t:';;' ...a~~9· ~~"'~1 I . -..- •. " , '/"0 j ;> " / .I. u i/ / t/'-V "I / J ~ ,...Ln:':1 Nguul gop Y tIl9 va ten), ...£Irp-«rl. .(~<1}C. f1;1,!~':('qf· .c.ty,/'J,".ry .~., '''~'~'7 176 DTM an Ddu tu C(J sO' c1oc;m 2B Nguai goP)' (Hi) ............ :p.~ .... va te.I1) ...........~: .. {\b.v~~~.~:.iakl .............. ~ . --rl~-:-( / - / "'I/./_.J ......... ~ , ;:..../ ........ \:~ ,nu. ... ~.QI..C'... .~t:":1 .. I!.()i.;?l'_1 / .-...~r.... -I .. ~.c.d.: r~"'" I ~.L L. I ",.1..::-" j 2" /(".,. ' / ' ".., / / 1.1.:> .h •• ". , i . ,..... 7... ·~"·· .Wt;:vY.l'/""""'" /.~.,,,, ,/,.-..,~ ... tt' ,.c.r.'()7i:}/{Y.vA:I(..1iJJcU .. ~.nn:J' . .....M, ..... ,.......... ,... ,......... ,........... ,.................. ,.................. ,.................. ::.iguoi gop Y(Hq v,) ten) ............................... ,................. ,............. ,. ...................... .. '" ., , ,., '" l\guOl gop y (H!) va ten) ............. ,,. .... ,.......................... , .......... , .. . " ~" ·f ••••••• ~~ •• " ••••••••• , •• , •••••• , ,.,., •••••••••••• ~ ., ••• , •••• " . , •• , •• ' . , • • • I'• • • • t.~ •••• ~.~ ••••• ' . ' .... i'\gutri g6p Y(Hv va ten), .............. '., .......................... , , ................ , ................ , ...... .. Nguai gop y (HI) va ten)........... ., ....... , ......................... ,.......................................... 177 DTM Dv an Ddu Ii( CO' sa H(l tcing U'U lien Tp.Da Nfmg giai dO(ln 2_B ___________ _ DANH sAGI cAe D~I IBEL ·HIA.Yl nV tham v&n e9ng dC1ng ..... /¥uI./'0'''' . , , , .... ,ChltG Y~l.. Q Gng (bLl): ... " ... .. "Cht'n; V\1." ." ,. () Ilg {bij):., .. '. , ...... , .. , ' ...... , , . , . , ,Chlt..: Vl,l ••..•. , . Ong (ba);" .. ",",. ",,,,,,,,,,.,,.,, "Chlr<: '1\1" .. "". Ong (ba): ............ " .... " ... " .. " ........ Ch(TC VII. ..... ", Va lt~i diQn cae h9 trong vlmg dIJ an (xem danh stich dinh kcm). 4. NQi dung CliO': bqp: Tu vdn gi6i thi~u v~ Dl,I un dbu tu en 5(r h4 t~ng ll'U tien Thanh ph6 :8ft Nang (phuong an tlly~n chi ti~t trClJ ph~{m vi ,1ia btm xfUphUiJ:1g v,v), . , , Tn vin trlnh bay vi: me): tru'(mg ph:':. Qin~: \,i bit')} phap giiun thihl de xwit, me hinh qldmly vft k(' hO,;lCh Iu vAn Trinh bflY vi:: c!lC iinh htJ(Jng Ihn h(\j dih, dfn btl :Jh6ng m~t b5ng, dan gia d~ xu§t V:l rulU dIU ve 116 In) phl)C h6i ClII)C gi&i thi~;l cic kha 'lsi dinll en d@ xufit (khu tii djnh w de xu~t do C()llg dAng de xuAt vi ui V:'i mong cfte II? tfll1g trong kllU TDC) Thao lufin, ti€~p nh~tn ~,~ v6' cae tae dQng m6i tnrcwg. bi~n 1'11(1[1 th1(;(; 5. Y ki~n ciia t:r}lJg {liing . gop y (He; v,i ten)., . ./:. .. '" ,}:"::".v" 179 DTM D~r an Dau lu Ca sa Hg tang U'U lien Tp.Da N6ng gia; dogn 2B Ngw'ri g6p ~. O!9 va t~nL ... ,:1 ••••••••••• , ~. , , c • , " , • , •••• ~ •• _ •••••• ~ ..... '1 ~ ,." •••• ,., A •••• ~ • ~ ~~'. , ••• f / :/' ..-.~ ,,~f' , fl . NguCJi gop Y(HQ va ten) .. J.I:(t,), .. :{,~,~ .. /.:t;-'i7("'i.in..c,.1' .. ,....... "" ..................... ,............. .. .............. l· ....1..... ...'.' I V." I'"l· f /" ,.~ ,., , (lv'''''' /1'1 Ii ~.=' -. ('1,.i ..-.< -[I­ , , /\," ~\ .'•'.. ,.,.•.... ,,:.i.. ,,/.,......... ""Ia> liC... '/ .:~ .... .. ...." ....'.- ,! ., ... ~ ~ .1., ... :{~<:j:~. .: ... f-:'".1..\A't; .. /.. :J'C:.. ~ .. (:({~f;; ... .I\~L .'....... . gop '(1' , , ' ngmn. . • y .H) va ten) .... " ............................ ' ... ' '.1• i\ gncri gClp 5' (H (1 \'(1 H:in). " " ..... " . " . ' ................................. . 180 DTM Dv an Dau tll' CO" so· Hg tang tnl lien Tp.Da Nfmg giai t/o(,m 2B . ­ D~lllh sacll C.11i 1">0 phM bIT) con~' ,ifc '3 dfm l('n G hi cll1J ; 181 DTM an Dau tu C(J sO' do(tn 2B B{k lfip - 1'\1' do - H:;mh phut' mEN BAN THAM VAN C(HSGD()KG HANH CIA TAc D()NC [\ffn TRV'(lNG vA HO~CH QrAN L)' MOl TIUrONG VA KE HO.',\.CB TAl DINH elf HI}':ln u~u tlr CO' SlY h? t~ng 1m tielJ 1h;'1l1l Hil l\~l1g ()ng (ba):", ,{t~, ..!k:!;1.;lxl.,,, .... "Chll'e V\I."" ,l/",YVd,pI,.;,Iy." ".""" ... c:ng (ba):, .. ,. ttw.y;~,7h7' ~Chuc V\L, ,{5.&LtJyt::""',,, '... "" .... Ong (ba):." ..... , ... , .... ",' .. "' .. " ....... Chfrc V1,l .. ,. Ong (bit): .. " .. ", .. ", ............... ' .. ', "ChU:c \'\1"" ...... " .. " ...... ', ....... , .. , .... , Ong (ba): ..... ',,, " ... , .. ,,,, ... .,, .... ClllIe V\I." .. " , .... , .. , .. """", . " , """ C)ng (ba): .. ,.... .. ....... """ .. " .......Chirc V\I"" .. " .... , , .. " ."" .... , .. , .... ,... ,,, ... ()ng (bil):"", .. ,.. """"" .. , .... ,,, "" "OJllC V\I., vIi d~i di~1l cae hi',! trong 4. N{ti dung cUQc b\lp: TIT do gil)'i v~ D\T :1:1 d~u :If co S(1 h(l uu ti0n fhanh ph(} flu N1\ng (pbutmg all tuy~n chi ti@t troll ph~llli vi (![a b:lll x:ilplll!(mg \',v), Tu vfrn trinl! h,\y v~ nhung tal' dong mt)i tnl6-11g ph:l\ ,;in}) va bL¢n philp giilnl thi0u d~ xuk ;no 11111h qmin I}' "it K6 ho<;!ch tl1\1'c hi9n Tit vtlll Trinh b:iy v~ cae 31111 lnrt'Yng tIm hili ait, (ltb H: ml:it b~ng, dan [j:[ d~ xu5! viJ nhu du v,} 110 trg pbvc h(\i ClI[,C s0ng, gi6.1 Uj~\l de kliu Tal dinl! elf de xuih (kim tal dinh ell: d~ xu6,t do c911g d(~ng d~ xudt vi trf va lnoog mc]t'ln v~ cae Ill) tang trong kllu TDC) Thao lll~n, tibp nhfJn y ki~n dbng gop ella CQllg dbng voi de tal.' d{'I1g m6i tf[nJng, bi~1l phap gium Iniell 5. Yli.iBIl cua ci}ng d5ng ~ .... ~ Nguai g6py (H9 va ten)" , : .. ,c9:ttrJ"'" /'f,du:79:m1,/.?:i/4: " , .... " • ", , ".. ,,,,,,,_,, ... ,~-;. ck.#~..J.£ ~'~/'t~.<~:,_~~ " ------------,-~-----~ 182 183 DTM em DJu tu CO'sa Nguai Y(IIQ va (en).......... .......................... . 184 DTM an DJu ttl' CO'so' ilor;tn 2B cAe HAl BIl~L T!-iA.I'd D:\NH SACH "­cJ.6"", '. ..... " .r.'IJ,_. -.J' .. r '"il' ,1-1 ~':';"l'!Y.).r~R., .. Ch(rC V\I .... (d!'J(~l.O.l.4 ......................... . ~ \J ()og (ba):... ...... ...... . ................ Chlrc Vt.1 .. ()ng (bfJ):........ .. ....... ChlIC \1) ... Ong (bit):..... . .. ....................... Chire V\l .. . (Jng (M):......... ............. ChiTe VI} ..•....... \/,1 d,u di~n de h9 lrong Vlll1g diJ ~in ("em danh sad] clbh 1\<'111). 4. Ngi dung cu~c hllp: • Tlf '.'~n gi6i (hi~u vb 1)v an dAu ttl co s6' hi! tang tilt lien Th,lnh pM Da N~llg (phu'O'ng an tuyen chi ti~t nen Jlh~n vi 1.11:1 han xaiprtU'(mg v.v). Tu v~n trinh bay v~ nhung t{IC di)ng mtli tnIOng pilut sinh va bi~ll phap giam thi6u d€ xuih, m6 h]nh quan ly I'll k~ ho~ch th\rc hj~l1 • Ttl' vAn trinh bay vi; c!ic anh hutmg thu h6i oAt, d~n btl ghli ph6ng m~t bing, dall gia d8 x.ufrt vii nhu du v& h6 trc,r pll,lc hili eUQt: s6ng, gi61 thi2u de kIm Tlii cijnh elI dt XI1~t (khu till de d!l1h Ctr xuAt do c(}ng d(lOg d~ xu.1t vi trf va mong mu()n \'6 cite h~t tlmg trung khu IDC) veri c{\C tac dOng moi trucmg, bi~n 186 ,,' DTM Dtt' an Dciu Ill" C(J' SCY Hq tcing tnt lien Tp.Da Nang giai dO(1l1 2B ---------------------------- t\guai 'J' (Hq va t0n)" Ngm'ri gop y (HQ va tell) .. Ngubi g6p Y(HI) va ten) ..................................... .. Ngubi gop Y' (IIi) va ten) .................... " .... , ....... ,."., Nguai gop y (H9 va ten) ......... ,......... ,." ................. ' .. , .......................... ,................. Ngu6'i gop y (H9 "it ten).,., .... , .. , ..... ,...... , .... , , ... , ... , 187 DTM an Ddu tlr Ca sO­ 2B OANU :D.;,1 BlE . ·fHA.LVI Dr ",1n ding t~i ... P~..I.J;lJ'" l .. thung ...... nam 201(1 0 '1" ' ~ .. ~.~.-.~.-.- - ' " '". r Hq vit ten: II'" v9 Ghi chtl _.Al+_~ fI.W'i, 5i'","S ~.J.~ Lllr'S 0 Uog Lf' Ar-· .:~,II '_:~I 1,_, ... _ . ,'1lb'::-r-":~~ . f\..h., Ii -,(\ c..":{i~~:2: .' ~:- I '"", I (}Q .-,----~ ............. _..... . .....................­ .. --;.---- ... ~-- 188 MAP SECTION SEE ORIGINAL MAP TOO LARGE TO SCAN