Environmental Impact Statement for Nyagak Minihydro
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FILE Coey 5 Public Disclosure Authorized Report /02 Environmental Public Disclosure Authorized Impact Statement for Nyagak minihydro (Revised v.2) Public Disclosure Authorized Public Disclosure Authorized ECON-Report no. /02, Project no. 36200 <Velg tilgjengelighet> ISSN: 0803-5113, ISBN 82-7645-xxx-x e/,, 9. January 2003 Environmental Impact Statement for Nyagak minihydro Commissioned by West Nile Concession Committee Prepared by EMA & ECON ECON Centre for Economic Analysis P.O.Box 6823 St. Olavs plass, 0130 Oslo, Norway. Phone: + 47 22 98 98 50, Fax: + 47 22 11 00 80, http://www.econ.no - EMA & ECON - Environmental Impact Statement for Nyagak minihydro 4.3 Geologic Conditions .............. 26 4.4 Project Optimisation .............. 26 4.5 Diversion Weir and Fore bay .............. 27 4.6 Regulating Basin and Penstock .............. 28 4.7 Powerhouse .............. 28 5 EXISTING ENVIRONMENTAL BASELINE . ............................30 5.1 Physical Environment .............................. 30 5.1.1 Climate and Weather Patterns .............................. 30 5.1.2 Geomorphology, geology and soils .............................. 30 5.1.3 Hydrology .............................. 32 5.1.4 Seismology .............................. 32 5.2 Vegetation .............................. 33 5.3 Wildlife .............................. 34 5.3.1 Mammals .............................. 34 5.3.2 Birds .............................. 34 5.3.3 Fisheries .............................. 34 5.3.4 Reptiles .............................. 35 5.4 Socio-economics .............................. 35 5.4.1 Ethnicity and community struture .............................. 35 5.4.2 Settlement and housing characteristics .............................. 35 5.4.3 Source of energy .............................. 36 5.4.4 Infrastructure .............................. 36 5.4.5 Social Services .............................. 37 5.4.6 Domestic Water and Sanitation .............................. 38 5.4.7 Land use and land tenure systems .............................. 39 5.4.8 Sources of income and employment .............................. 41 5.4.9 Cultural heritage ........... I 41 6 POTENTIAL ENVIROMENTAL IMPACTS . .............................42 6.1 Introduction ........................... 42 6.2 Physical and ecological impacts ........................... 42 6.2.1 Negative Impacts ........................... 43 6.2.2 Positive Impacts ........................... 47 6.3 Socio-economic and Cultural Impacts ........................... 48 6.4 Summary of overall impacts ........................... 51 7 MITIGATION MEASURES .................... 54 7.1 Introduction ....................... 54 7.2 Physical and Ecological Impacts ....................... 54 7.2.1 Land Use ....................... 54 7.2.2 Surface runoff ....................... 55 7.2.3 Hydrology ....................... 55 7.2.4 Pollution and waste ....................... 55 7.3 Socio-economic Impacts ....................... 56 7.3.1 Land Take ....................... 56 7.3.2 Borrow Pits and Quarries ....................... 60 7.3.3 Increased Population Size ....................... 61 7.3.4 Construction Camps ....................... 61 7.3.5 Project Traffic ....................... 62 7.3.6 Dam safety ....................... 62 7.4 Impact-mitigation matrix ....................... 63 8 ANALYSIS OF ALTERNATIVES .. ....................... 66 3 - EMA & ECON - Environmental Impact Statement for Nyagak minihydro 8.1 The "do Nothing" Scenario .................................. 66 8.2 The proposed Development Scenario .................................. 67 8.2.1 Siting of the Power Station .................................. 67 8.2.2 Power Line Routing .................................. 67 8.2.3 Operation and Maintenance .................................. 67 9 ENVIRONMENTAL MANAGEMENT PLAN . ............................68 9.1 Introduction .................................. 68 9.1.1 Mitigation .................................. 68 9.1.2 Monitoring .................................. 68 9.1.3 Measures Specified in the EMP .................................. 69 9.2 Mitigation during construction .................................. 69 9.2.1 Mobilisation .................................. 70 9.2.2 Site Establishment .................................. 70 9.2.3 Quarries and Borrow Areas .................................. 72 9.2.4 Spillway and Power Station Construction .................................. 73 9.2.5 Site Reinstatement .................................. 73 9.2.6 Mitigation during operation .................................. 74 9.3 Implementation of mitigation measures .................................. 74 9.4 Monitoring .................................. 76 9.4.1 Baseline Monitoring .................................. 76 9.4.2 Monitoring during the construction phase .................................. 78 9.4.3 Monitoring during the operational phase .................................. 79 9.4.4 Monitoring agencies and cost estimates .................................. 82 9.5 Record keeping and reporting .................................. 84 9.6 Review and modification of EMP .................................. 85 9.7 Resourcing and institutional strengthening .................................. 85 9.7.1 Site Environment Officer .................................. 85 9.7.2 DWD & WRAP .................................. 85 9.7.3 District Health Offices/Vector Control Unit .................................. 86 9.7.4 District Environment Officer (DEO) .................................. 86 9.7.5 Forest Departnent .................................. 86 9.7.6 Agriculture Department .................................. 86 9.7.7 NEMA .................................. 86 ANNEX 1: BIRD LIST .88 ANNEX 2: MAMMAL LIST .94 ANNEX 3: PLANT LIST ................. 95 ANNEX 4: LIST OF PEOPLE CONSULTED ON EIA FIELDTRIP .98 ANNEX 5: LIST OF AFFECTED PEOPLE .11 ANNEX 6: MITIGATION OBLIGATIONS OF THE DEVELOPER . 115 ANNEX 7:COMPENSATION RATES . .117 ANNEX 8: EIA ADDENDUM DUE TO TECHNICAL DESIGN CHANGE..131 ANNEX 9: RECORD OF CONSULTATION MEETINGS & DISCLOSURE OF INFORMATION .156 ANNEX 10: DAM SAFETY ISSUES .168 ANNEX I1: CULTURAL HERITAGE .171 ANNEX 12: COMMENTS REGARDING RESETTLEMENT ACTION PLAN175 4 - EMA & ECON - Environmental Impact Statement for Nyagak minihydro Acknowledgements The Environmental Impact Assessment study team for the Nyagak Hydropower project would like to express its sincere gratitude to all those who made it possible. Numerous people were consulted in Kampala, Nebbi and Paidha towns and at the project site and their contributions are valued. Particular mention must be made of Mr. Justin Ecaat, EIA Coordinator, NEMA; Eng. Moses Murengezi, Assistant Commissioner Ministry of Energy and Mineral Development; Eng Swali Rajab UEB Regional Manager West Nile; Eng. Mohammed Badaza, Senior Water Officer - Permits, Directorate of Water Development; Fred Onyai, Nebbi District Environment Officer; and John Wapokurwa Mayor, Paidha Town Council. Special recognition is also made of the contribution and support given for the project by a representative of the office of the Rwoth of the Alur people, Nasson Kerlith, during community discussions at project site. Finally, the EIA team would like to thank local council officials and the sub-county chief of the project area. However, while acknowledging the contributions and support received during the course of the study, the EIA Team assumes full responsibility for any omissions and errors contained in this Environmental Impact Statement Report. .ii - EMA & ECON - Environmental Impact Statement for Nyagak minihydro Abbreviations and acronyms AFRREI African Rural Renewable Energy Initiative AIDS Acquired Immune Deficiency Syndrome CAO Chief Administrative Officer CEFORD Community Empowerment for Rural Development DEC District Environment Committee DEO District Environment Officer DWD Directorate of Water Development EIA Environmental Impact Assessment EIS Environmental Impact Statement EMA Environmental Management Associates EMP Environmental Management Plan ERT Energy for Rural Transformation ESMF Environmental and Social Management Framework FD Forest Departmet GoU Government of Uganda HIV Human Immuno - Deficiency Virus IDA The International Development Association IFC The Intemational Finance Corporation Km/s Kilometre per second Km2 Square Kilometre LC Local Council MEMD Ministry of Energy and Mineral Development m2 Square meter m3/s Cubic metres per second MW Megawatt Mwh Megawatt - hour NEMA National Environment Management Authority NGO Non-Governmental Organisation RAP Resettlement Action Plan RDC Resident District Commissioner SEO Site Environment Officer TOR Terms of Reference USD United States Dollar UEB Uganda Electricity Board URECL Uganda Rural Electrification Company Limited ("the Developer") USD United States Dollar USH Uganda Shilling UWA Uganda Wildlife Authority VCU Vector Control Unit WB World Bank _..~~~~~~~~~~~~~~i -EMA & ECON - Environmental Impact Statement for Nyagak minihydro Executive Summary Background and introduction The Nyagak Hydropower project is in line with the Ugandan Government's plans for the decentralisation and privatisation of hydropower systems. The proposal also represents a strategic investment, correcting the shortfall of commercial energy in the West Nile Region. The project is to be implemented by the private sector. This is in line with Government policy that encourages private sector participation in the energy sector and has important implications for rural