CESI A4511403 Report STA Territorial and Environmental Studies Approved Page 2 of 135 Client SALINI Costruttori S.p.A. Subject Gilgel Gibe II hydroelectric project Environmental Impact Assessment Main Report Order 0512/81/0001 E del 29/03/2004 Notes this document shall not be reproduced except in full without the written approval of CESI. N. of pages 135 N. of pages annexed 16 Issue date September 2004, 15th Prepared Daniela Colombo (STA) Stefano Maran (STA) Verified Giuseppe Paolo Stigliano (STA) Approved Antonio Nicola Negri (STA) CESI Via R. Rubattino 54 Capitale sociale 8 550 000 Euro Registro Imprese di Milano Centro Elettrotecnico 20134 Milano - Italia interamente versato Sezione Ordinaria Sperimentale Italiano Telefono +39 022125.1 Codice fiscale e numero N. R.E.A. 429222 Giacinto Motta SpA Fax +39 0221255440 iscrizione CCIAA 00793580150 P.I. IT00793580150 www.cesi.it CESI A4511403 Report STA Territorial and Environmental Studies Approved Page 3 of 135 Table of contents EXECUTIVE SUMMARY............................................................................................................... 9 1 INTRODUCTION................................................................................................................ 19 1.1 Purpose 19 1.2 Background.............................................................................................................................19 1.3 Impact assessment responsibility and Assessment Team.......................................................21 1.4 Revision – September 2004....................................................................................................21 2 POLICY, LEGAL, AND INSTITUTIONAL FRAMEWORK ....................................... 25 2.1 Institutional and administrative framework............................................................................25 2.1.1 Federal Democratic Republic of Ethiopia ....................................................................................................25 2.1.2 Regional Government.......................................................................................................................................25 2.1.3 Environmental Protection Authority..............................................................................................................25 2.2 National policies and strategies ..............................................................................................26 2.2.1 The Constitution.................................................................................................................................................26 2.2.2 Conservation Strategy of Ethiopia.................................................................................................................27 2.2.3 Environmental Policy of Ethiopia..................................................................................................................27 2.2.4 Water Resource Policy .....................................................................................................................................28 2.2.5 The National Policy on Women.......................................................................................................................28 2.2.6 Environmental Framework Legislation.........................................................................................................29 2.2.6.1 Proclamation on Institutional Arrangement for Environmental Protection...........................................................29 2.2.6.2 Proclamation on Environmental Impact Assessment ............................................................................................29 2.2.6.3 Proclamation on Environmental Impact Assessment ............................................................................................30 2.2.6.4 Environmental Protection Authority’s EIA Guideline ..........................................................................................30 2.2.7 Legal framework for expropriation and compensation..............................................................................31 2.2.7.1 Land Tenure...........................................................................................................................................................31 2.2.7.2 Expropriation.........................................................................................................................................................31 2.2.7.3 Compensation........................................................................................................................................................31 2.2.8 Multilateral agreement.....................................................................................................................................32 3 PROJECT DESCRIPTION ................................................................................................ 33 3.1 Project location.......................................................................................................................33 3.2 General project description.....................................................................................................34 3.3 Description of project components.........................................................................................35 3.3.1 River diversion...................................................................................................................................................35 3.3.2 Access Roads......................................................................................................................................................36 3.3.3 Inlet works..........................................................................................................................................................36 3.3.4 Adits.....................................................................................................................................................................39 3.3.5 Tunnel (power waterways)...............................................................................................................................41 3.3.5.1 Tunnelling and blasting operations........................................................................................................................42 3.3.6 Surge shaft ..........................................................................................................................................................43 3.3.7 Penstocks.............................................................................................................................................................43 3.3.8 Power house.......................................................................................................................................................44 3.3.9 Transmission Line .............................................................................................................................................45 3.4 Camps and construction facilities...........................................................................................45 3.4.1 Camps and site installations............................................................................................................................45 3.4.2 Construction facilities.......................................................................................................................................46 3.5 Analysis of alternatives ..........................................................................................................46 3.6 Mitigative actions during construction activities ...................................................................47 3.6.1 Pollution from used oils, chemicals and other pollutants..........................................................................47 3.6.1.1 The pollutants such as oils and lubricants .............................................................................................................48 3.6.1.2 The pollutants such as fuels...................................................................................................................................48 © Copyright 2004 by CESI. All rights reserved - Activity code 42947H CESI A4511403 Report STA Territorial and Environmental Studies Approved Page 4 of 135 3.6.1.3 The pollutants such as dusts from the treatment plants.........................................................................................48 3.6.1.4 The pollutants such as cement dust from cement handling. ..................................................................................49 3.6.1.5 The pollutants such as water from the tunnel excavation drainage. ......................................................................49 3.6.1.6 The pollutants such as any kind of solid wastage (barrels, wasted concrete, steel scrap, empty drums and cement bags). ..................................................................................................................................................49 3.6.2 Waste Dumping..................................................................................................................................................50 4 IMPACT ASSESSMENT METHODOLOGY.................................................................. 52 4.1 Introduction............................................................................................................................52 4.2 Bounding and Scoping ...........................................................................................................53