BANCO MUNDIAL Bouchard 547, piso 29 Tel.: (54-11) 4316-9700 /44 BIRF * AlF I GRUPO BANCO MUNDIAL C1 106ABG Fax: (54-11) 4313-1233 Ciudad Aut6noma de Buenos Aires Am6rica Latina y el Caribe Argentina Oportunidades para todos February1j, 2018 Mr. Milton Eduardo Machado Lens OFFICIAL President DOCUMENTS Mr. Gerardo Siri Secretary General Administraci6n de las Obras Sanitarias del Estado (OSE) Montevideo, Uruguay Dear Sirs, Re: Loan No. 8183-UY - OSE Sustainable and Efficient Project Amendment to the Loan Agreement We refer to the Loan Agreement between Administraci6n de las Obras Sanitarias del Estado (OSE) (the Borrower) and the International Bank for Reconstruction and Development (the Bank) for the above-captioned Project, dated December 11, 2012, as amended (the Loan Agreement). Please note that capitalized terms used in this letter (Amendment Letter) and not defined herein have the meaning ascribed to them in the Loan Agreement. In accordance with: (a) the aide-memoire of the implementation mission held on October 9 - 12, 2017, which reflects the Borrower's request to modify the Project's results framework and revise the implementation schedule considering the Project's Closing Date (December 31, 2019) as extended by the Bank on July 19, 2017; and (b) our recent conversations on the subject; I am pleased to inform you that the Bank concurs with your request and proposes to amend the Loan Agreement as follows: 1. Part 2.1(a) of Schedule 1 to the Loan Agreement is modified in its entirety to read as follows: "2.1 Non-Revenue Water Reduction (a) Establishment of DMCs in the Guarantor's cities of Montevideo, Rivera, Salto, and Las Piedras;" All other provisions of the Loan Agreement, except as amended herein, shall remain in full force and effect. Please confirm your agreement to the foregoing amendment by signing and dating this Amendment Letter in the spaces provided below. This Amendment Letter will be executed in two counterparts, each of which shall be deemed an original and one of which shall be returned to us. The amendment set forth in this Amendment Letter will become effective as of the date of your countersignature, upon receipt by the Bank of one fully countersigned original of this Amendment Letter. Please also note that the Restructuring Paper, a copy of which is attached herewith, will be disclosed on the Bank's external website. INTERNATIONAL BANK FOR RECONSTRUCTION AND DEVELOPMENT By Us Hfentschiel -Director Argenti a, Paraguay and Uruguay Latin America and the Caribbean Region AGREED: ADMINISTRACION DE LAS OBRAS SANITARIAS DEL ESTADO By: _ ___ Authorized Representative Name: Ing, MILTON MACHADO Title: PRESIDENTE Date: By: z epesentat§N Name: Dr. GERARDO SIR[ Title: SECRETARIO GENERAL Date: A i 20 - 3 cc: Ms Mariella Maglia, Multilateral Organizations, Ministry of Economy and Finance Mr. Natan Wajner, Manager, Administraci6n de las Obras Sanitarias del Estado (OSE) Mr. Adrian Fernandez, Advisor to the Executive Director, World Bank