Mwamkala Village Council P. O. Box 200 Public Disclosure Authorized Magu, Mwanza Preliminary Environmental Assessment Study for the Proposed Construction of Charco Dam at Mwamkala Village in Busega District in Simiyu Region Public Disclosure Authorized Public Disclosure Authorized Prepared by Submitted to National Environment Management Council (NEMC) Regent Estate/Migombani, plot No 29/30, P.O. Box 63154, Dar es Public Disclosure Authorized Salaam, Tel Dir: +255 22 277 4852; Tel: +255 22 2774889; Mobile: +255 713-608930; Fax: +255 22 2774901; Email: [email protected], Website: www.nemc.or.tz Submission Date: 26th November, 2012 i Ministry of Water LVEMP II: Preliminary Environmental Assessment for the Proposed Construction of Charco Dam at Mwamkala Village in Busega District Preliminary Environmental Assessment for Proposed Construction of Charco Dam at Mwamkala Village in Busega District in Simiyu Region Declaration This Preliminary Environmental Assessment report has been prepared by; Name and Responsibility Speciality Signature Eng. Venant Rwenyagira – Civil- Undertaking Environmental Environmental Management, Team leader with Engineer extensive experience in Environmental Engineering and Management Mr. Huruma Kisaka - Undertaking Sociologist social impacts assessment Eng. Sanjo Mgeta- Undertaking Environmental environmental impacts assessment Engineer Eng. Patrick C. Valimba – Water Resource Undertaking assessment of impacts Engineer related to water resources Environmental BENCHMARK- Consulting Engineers Page ii of 98 Ministry of Water LVEMP II: Preliminary Environmental Assessment for the Proposed Construction of Charco Dam at Mwamkala Village in Busega District Contents Contents ..................................................................................................................................... iii List of Tables ............................................................................................................................. vi List of Figures ........................................................................................................................... vii Executive Summary ................................................................................................................. viii Acknowledgements ................................................................................................................. xvi Acronyms and Abbreviations ................................................................................................. xvii 1. Introduction ........................................................................................................................ 1 1.1 Project Background and Justification ............................................................................................. 1 1.2 Purpose of Undertaking Preliminary Environmental Assessment ............................................. 3 1.3 Study Methodologies ......................................................................................................................... 3 1.4 Study Limitations ............................................................................................................................... 4 1.4.1 Sediment Data- ............................................................................................................................................. 4 1.4.2 Water Requirements .................................................................................................................................... 4 2. Project Description ............................................................................................................. 6 2.1 Objective of the project .................................................................................................................... 6 2.2 Project location .................................................................................................................................. 6 2.3 Project Activities ................................................................................................................................ 7 2.3.1 During Construction phase ........................................................................................................................ 7 2.3.2 During Operation Phase ............................................................................................................................. 8 2.3.3 During Decommissioning Phase ............................................................................................................... 8 2.4 Preliminary Design of the Project ................................................................................................... 9 2.5 Project Requirements ..................................................................................................................... 12 2.5.1 Aggregates for Works ................................................................................................................................ 12 2.5.2 Gravel........................................................................................................................................................... 12 2.5.3 Soil for Charco Dam walls - Clayey Soil and Sandy soil. ..................................................................... 12 2.5.4 Water for works ......................................................................................................................................... 12 2.5.5 Land ............................................................................................................................................................. 13 3. Policy, Administrative and Legal Frameworks ................................................................. 14 3.1 Introduction ..................................................................................................................................... 14 3.2 Environmental Related and Other National Policies ................................................................ 14 3.3 Laws, Regulations and Guidelines ................................................................................................ 19 3.3.1 Acts Dealing with Environment or relate to EIA ................................................................................ 19 3.3.2 Acts Dealing with Land Use Planning .................................................................................................... 19 3.3.3 Acts Dealing with Natural Resources ..................................................................................................... 21 3.3.4 Acts Dealing with Trades and Professional Ethics/Conduct ............................................................. 22 3.3.5 Acts with a Bearing on Environment at the District Level ................................................................. 24 Environmental BENCHMARK- Consulting Engineers Page iii of 98 Ministry of Water LVEMP II: Preliminary Environmental Assessment for the Proposed Construction of Charco Dam at Mwamkala Village in Busega District 3.3.6 Other Relevant International Treaties and Conventions..................................................................... 24 3.4 The World Bank’s Safeguard Policies .......................................................................................... 26 3.4.1 OP/BP 4.01 Environmental Assessment Polic .................................................................................... 26 3.4.2 OP/BP 4.12 Involuntary Resettlement .................................................................................................. 26 3.4.3 OP/BP 4.04 Natural Habitats ................................................................................................................. 27 3.4.4 OP/BP 4.36 Forests .................................................................................................................................. 27 3.4.5 OP 4.09 Pest Management ....................................................................................................................... 28 3.4.6 OP/BP 4.11 Physical Cultural Resources .............................................................................................. 28 3.4.7 OP/BP 4.10 Indigenous Peoples ............................................................................................................ 29 3.5 Administrative Framework ............................................................................................................ 29 3.5.1 Central Government Agencies ................................................................................................................ 29 3.5.2 Regional and District Administrative Structures .................................................................................. 30 4. Baseline Conditions ........................................................................................................... 31 4.1 Physical Environment .................................................................................................................... 31 4.1.1 Climatic conditions .................................................................................................................................... 31 4.1.2 Soils .............................................................................................................................................................. 31 4.1.3 Settlement Patterns ...................................................................................................................................