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SFG1692 V7 Public Disclosure Authorized Public Disclosure Authorized SFG1692 V7 Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized Nigerian Erosion and Watershed Management Project (NEWMAP) Final Report Environmental and Social Management Plan Public Disclosure Authorized (ESMP) for the Umueshi Gully Erosion Site, Ideato South, Imo State, Nigeria. Prepared for the Imo State Nigeria Erosion and Watershed Management Project (IMONEWMAP) Final Report for the Umueshi Erosion Gully site Nigerian Erosion and Watershed Management Project (NEWMAP) Final Report Environmental and Social Management (ESMP) for the Umueshi Gully Erosion Site Ideato South, Imo State Prepared for Imo State Nigeria Erosion and Watershed Management Project (IMONEWMAP) Owerri, Imo State. ii Final Report for the Umueshi Erosion Gully site 1 Table of Contents List of Figures .................................................................................................................................... v List of Tables ...................................................................................................................................... v List of Photos ..................................................................................................................................... v Abbreviation .................................................................................................................................... vi Executive Summary ...................................................................................................................... vii CHAPTER 1: INTRODUCTION ...................................................................................................... 1 1.1 Background ....................................................................................................................................... 1 1.2 Purpose of the ESMP ...................................................................................................................... 2 1.3 Objectives of the Environmental and Social Management Plan ..................................... 3 1.4 Technical Approach and Methodology to the ESMP ........................................................... 4 CHAPTER 2: DESCRIPTION OF THE STUDY AREA ................................................................ 5 2.1 Overview of the Project State ..................................................................................................... 5 2.1.1 Physical Environment of Imo State ................................................................................................. 6 Climate & Temperature ........................................................................................................................................ 6 Relative humidity .................................................................................................................................................... 6 2.1.2 Biological Environment ........................................................................................................................ 7 2.1.3 Social Environment ................................................................................................................................ 7 2.2 Overview of Ideato South LGA .................................................................................................... 8 2.3 Overview of the Project Areas .................................................................................................... 9 2.3.1 Physical Environment ........................................................................................................................ 10 2.3.2 Biological Environment ..................................................................................................................... 12 2.3.3 Social Environment ............................................................................................................................. 13 CHAPTER 3: PROJECT DESCRIPTION ...................................................................................... 22 3.1 Introduction .................................................................................................................................... 22 3.2 Umueshi Gully Erosion ................................................................................................................ 22 3.2.1 Land Size.................................................................................................................................................. 24 3.2.2 Vulnerability .......................................................................................................................................... 24 3.2.3 Hydrology ............................................................................................................................................... 24 3.3 Design Concept .............................................................................................................................. 28 3.4 Rehabilitation works/Design solutions............................................................................... 28 3.4.1 Filling and Compaction ...................................................................................................................... 28 3.4.2 Use of Gabion mattress on Geotextile material ....................................................................... 28 3.4.3 Re-vegetation with local grass and trees within the distance of the gully and its finger 28 3.4.4 Collection of water upstream.......................................................................................................... 29 3.4.5 Control of human activity upstream ............................................................................................ 29 3.5 Design Components ......................................................................................................................... 29 3.5.1 Construction of Side drains ............................................................................................................. 29 3.5.2 Construction of the Concrete Culvert .......................................................................................... 30 3.5.3 Construction of Step-wise drop Structure ................................................................................. 30 CHAPTER 4: POLICY, LEGAL, REGULATORY AND INSTITUTIONAL FRAMEWORKS 31 4.1 Introduction .................................................................................................................................... 31 4.2 Relevant Regulatory Policies of Nigeria ............................................................................... 31 4.2.1 National Policy on Environment.................................................................................................... 31 4.2.2 The Federal Ministry of Environment ......................................................................................... 31 4.2.3 Other Acts and Legislations ............................................................................................................. 33 4.2.4 State Legislations ................................................................................................................................. 34 iii Final Report for the Umueshi Erosion Gully site 4.3 The World Bank Environmental and Social Safeguards ................................................. 35 4.4 Applicable International Conventions, Treaties and Agreements .............................. 36 4.5 INSTITUTITIONAL FRAMEWORK ............................................................................................ 37 CHAPTER 5: SUMMARY OF POTENTIAL IMPACTS FOR THE UMUESHI GULLY EROSION SITE ................................................................................................................................. 38 5.1 Introduction .................................................................................................................................... 38 5.2 Associated and Potential Environmental Impacts ............................................................ 38 5.3 Associated and Potential Impacts Determination ............................................................ 42 5.4 Methodology for Assessing and Analysing the Social Impacts ..................................... 42 5.5 Broad Beneficial Impacts Associated with the Proposed Rehabilitation of the Umueshi Gully Erosion Site .................................................................................................................. 42 CHAPTER 6: PROJECT ALTERNATIVES .................................................................................. 64 6.1 Introduction .................................................................................................................................... 64 6.2 Options.............................................................................................................................................. 64 6.2.1 Option one: Rock Lined Chute ............................................................................................................ 64 6.2.2 Option Two: Wood Drop Structure .................................................................................................. 65 6.2.4 Option three: Do nothing ...................................................................................................................... 66 6.5 The Preferred Alternative ............................................................................................................. 66 CHAPTER 7: ENVIRONMENTAL
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