World Bank Document

SFG1692 V36 Hospitalia Consultaire Ltd ENVIRONMENTAL AND SOCIAL MANAGEMENT PLAN (ESMP) Public Disclosure Authorized NNEWICHI GULLY EROSION SITE, NNEWI NORTH LGA, ANAMBRA STATE Public Disclosure Authorized Public Disclosure Authorized Anambra State Nigeria Erosion and Watershed Management Project Public Disclosure Authorized November 2017 Table of Contents List of Plates ..................................................................................................................... v List of Tables .................................................................................................................. vii list of acronyms ............................................................................................................. viii EXECUTIVE SUMMARY ..................................................................................................... ix 1 CHAPTER ONE: INTRODUCTION ................................................................................ 17 1.1 Background ..................................................................................................................... 17 1.2 Hydrology ........................................................................................................................ 18 1.3 Hydrography .................................................................................................................... 19 1.4 Hydrogeology .................................................................................................................. 20 1.5 Baseline Information ....................................................................................................... 23 1.5.1 Physical Environment .................................................................................................... 23 1.5.2 Biological Environment ................................................................................................. 26 1.6 Description of The Proposed Intervention ....................................................................... 27 1.6.1 Hydrological data design return period ........................................................................ 29 1.7 Geotechnical data and material property ........................................................................ 30 1.8 Proposed gully protection concept design ....................................................................... 30 1.8.1 General Layout .............................................................................................................. 30 1.8.2 Hydraulic structure design and analysis ....................................................................... 31 1.8.3 Main gully Hydraulic Modelling and Drainage Canal Design ........................................ 31 1.8.4 Stream bank protection and gabion retaining wall section (0+620 to 2+020) ............. 32 1.8.5 Dike extension and end structure at flood plain (2+020 to 2+400) .............................. 32 1.8.6 Culvert Design ............................................................................................................... 32 1.8.7 External Drain connection and Interceptor drain ......................................................... 33 1.8.8 Design of Chute and Energy Dissipater Structures ....................................................... 33 1.8.9 Design of Check dam ..................................................................................................... 33 1.8.10 Finger gully Hydraulic Modelling and Drainage Canal Design ...................................... 33 1.8.11 Gully bank treatment with rigid structures and Bio-remediation ................................ 34 1.8.12 Bio-remediation (Vetiver grass and bamboo) ............................................................... 34 1.9 Rationale for the ESMP.................................................................................................... 34 1.10 Rationale for the Study.................................................................................................... 35 1.11 Scope of Works and Objectives of the Study ................................................................... 35 2 CHAPTER TWO: INSTITUTIONAL AND LEGAL FRAMEWORK ........................................ 37 2.1 Introduction .................................................................................................................... 37 2.2 The Environmental and Social Management Framework (ESMF) for the NEWMAP ........ 37 2.3 World Bank Safeguard Policies Triggered by the NEWMAP Project ................................. 37 2.4 Federal Policy, Legal, Regulatory and Administrative Frameworks ................................. 38 2.4.1 National Policy on Environment ................................................................................... 38 2.4.2 The Federal Ministry of Environment ........................................................................... 38 2.4.3 National Legal Instruments on the Environment .......................................................... 39 2.5 Other Relevant Acts and Legislations at Federal Level .................................................... 39 2.6 State Legislations ............................................................................................................ 40 ii Hospitalia Consultaire Ltd 3 CHAPTER THREE: DESCRIPTION OF THE AREA OF INFLUENCE AND ENVIRONMENTAL BASELINE CONDITION ..................................................................................................... 42 3.1 Anambra State ................................................................................................................ 42 3.2 Overview of Nnewi .......................................................................................................... 44 3.3 Environmental Quality Assessment ................................................................................. 45 3.4 Sampling Methodology ................................................................................................... 45 3.4.1 Soil Sample Collection ................................................................................................... 45 3.4.2 Water Sample Collection .............................................................................................. 46 3.4.3 Air Quality Sample Collection ....................................................................................... 46 3.4.4 Noise Level Measurement ............................................................................................ 46 3.4.5 Discussion on Findings from Soil Sample Analysis on Nnewichi ................................... 48 3.4.6 Discussion of Results of Water Quality Analysis in Nnewichi ....................................... 51 3.5 Technical Approach and Methodology to the Reconnaissance Exercise .......................... 55 3.5.1 Preliminary Site Visit/Scoping and Reconnaissance Exercise ....................................... 55 3.6 Impact Identification ....................................................................................................... 56 3.6.1 Impact Identification and Assessment Tool .................................................................. 56 4 CHAPTER FOUR: SOCIO-ECONOMIC CHARACTERISTICS AND STAKEHOLDERS CONSULTATION .............................................................................................................. 57 4.1 Introduction .................................................................................................................... 57 4.2 Methodology for the Socio-economic survey .................................................................. 59 4.3 Primary Data ................................................................................................................... 59 4.3.1 Gender Distribution of Respondents ............................................................................ 59 4.3.2 Age Distribution of Respondents .................................................................................. 60 4.3.3 Marital status of Respondents ...................................................................................... 60 4.3.4 Religious practice of Respondents ................................................................................ 61 4.3.5 Literacy Level and Educational Infrastructure .............................................................. 61 4.3.6 Water and Sanitation .................................................................................................... 62 4.3.7 Household Waste Disposal, Cooking Fuel and Electricity ............................................. 63 4.3.8 Average household size of Respondents ...................................................................... 63 4.3.9 Occupation .................................................................................................................... 64 4.3.10 Average Income status of Respondents ....................................................................... 65 4.3.11 Infrastructural Development ........................................................................................ 65 4.3.12 Desirability of the Project ............................................................................................. 66 4.3.13 Health Status Survey ..................................................................................................... 66 4.3.14 Replacement Options .................................................................................................... 67 4.4 Stakeholders Consultation

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