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Anhui Huainan Urban Water Systems Integrated Rehabilitation Project

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Anhui Huainan Urban Water Systems Integrated Rehabilitation Project Environmental Impact Assessment Project Number: 46078-002 June 2018 PRC: Anhui Huainan Urban Water Systems Integrated Rehabilitation Project Addendum to Environmental Impact Assessment Prepared by Huainan International Financial Institutions Loan Project Management Office for the Asian Development Bank. This is an addendum version to the draft originally posted in October 2013 available on https://www.adb.org/projects/documents/anhui-huainan-urban-water-systems- integrated-rehabilitation-project-eia-jul-2013 2 This addendum environmental impact assessment is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. Your attention is directed to the “terms of use” section on ADB’s website. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area. People’s Republic of China Anhui Huainan Urban Water Systems Integrated Rehabilitation Project Addendum to Environmental Impact Assessment Prepared by Huainan International Financial Institutions Loan Project Management Office with the assistance of China Environmental Resources Technology Co., LTD April β018 CURRENCY EQUIVALENTS (as of October 2017) Currency unit–Yuan (CNY) CNY1.00=$0.1515 $1.00=CNY6.6 In this report, “$” refers to US dollars. ABBREVIATIONS ADB Asian Development Bank GDP Gross domestic product AQG Air Quality Guideline GRM Grievance redress mechanism As Arsenic HEMS Huainan Environmental Monitoring Station BHC Benzene hexachloride HEPB Huainan Environmental Protection Bureau BOD5 5-day biochemical oxygen demand Hg Mercury Cd Cadmium HMG Huainan Municipal Government Cl- Chloride Ni Nickel CNY Chinese Yuan HPMO Huainan Project Management Office CO Carbon monoxide IMn Permanganate index COD Chemical oxygen demand IA Implementing Agency Cr Chromium LAS Linear alkylbenzene sulfonate (= anionic Cu Copper Mn Manganesesurfactant) DDT Dichlorodiphenyltrichloroethane NH3-N Ammonia nitrogen DO Dissolved oxygen N Nitrogen EA Executing Agency NO2 Nitrogen dioxide - EIA Environmental impact assessment NO2 Nitrite - EMP Environmental Management Plan NO3 Nitrate EPB Environmental Protection Bureau P Phosphorus F- Fluoride PAM Polyacrylamide FN Volatile phenol Pb Lead pH Measure of acidity (<7) and alkalinity (>7) based onhydrogen ion concentration PM2.5 Particulate matter with particle diameter < 2.5 SPS Safeguard Policy Statement micron SS Suspended solid PM10 Particulate matter with particle diameter < 10 TDS Total dissolved solids micron TN Total nitrogen PME Power mechanical equipment TP Total phosphorus 2- PO4 Phosphate TPH Total petroleum hydrocarbon Se Selenium TSP Total suspended particulate SO2 Sulfur dioxide WWTP Wastewater Treatment Plant 2- SO4 Sulfate Zn Zinc WEIGHTS AND MEASURES oC degree centigrade μm micron μm/L microgram per liter dB decibel ha hectare km kilometer km2 square kilometer km3 cubic kilometer kw kilowatt L liter L/s liter per second m meter m2 square meter m3 /a cubic meter per annum m3 /d cubic meter per day m3/s cubic meter per second mg/kg milligram per kilogram mg/L milligram per liter mg/m3 milligram per cubic meter no./L number per liter t metric ton t/a ton per annum t/d ton per day t/y ton per year TABLE OF CONTENTS I. EXECUTIVE SUMMARY ...................................................................................... 1 II. INTRODUCTION .................................................................................................. 4 A. Background ....................................................................................................... 4 1. Preliminary Project Profile ......................................................................... 4 2. New project components ........................................................................... 6 B. Project rationale and necessity .......................................................................... 7 C. EIA preparation ................................................................................................. 8 III. POLICIES AND LEGAL AND ADMINISTRATIVE FRAMEWORK ........................ 9 A. Overview ........................................................................................................... 9 B. Compliance with related policies ..................................................................... 12 IV. PROJECT DESCRIPTION .................................................................................. 14 A. Project features ............................................................................................... 14 B. Geographical location and project components ............................................... 14 1. Geographical location .............................................................................. 14 2. Project components ................................................................................. 17 C. Anticipated Environmental and Social Benefits................................................ 47 V. DESCRIPTION OF THE ENVIRONMENTAL CONDITIONS ............................... 50 A. Natural environment ........................................................................................ 50 1. Geographic location ................................................................................. 50 2. Topography and geology ......................................................................... 50 3. Climate .................................................................................................... 50 4. Surface water .......................................................................................... 52 5. Ground water ........................................................................................... 54 6. Mineral resources .................................................................................... 54 B. Social environment .......................................................................................... 54 1. Administrative division ............................................................................. 54 2. Population and Living Conditions ............................................................. 54 1 3. Agriculture ............................................................................................... 54 4. Economy ................................................................................................. 55 5. Culture, education and public health ........................................................ 55 6. Historical and cultural relics ..................................................................... 55 C. Environmental quality ...................................................................................... 56 1. EIA scope and standards ......................................................................... 56 2. Objectives of environmental protection .................................................... 61 3. Quality status of water environment ......................................................... 76 4. Quality status of air environment ............................................................. 81 5. Quality status of acoustic environment .................................................... 92 6. Soil and sediments .................................................................................. 94 7. Ecological Environment ......................................................................... 105 D. Linked facilities .............................................................................................. 109 1. Huainan Municipal WWTP ..................................................................... 109 2. Maoji Experimental Zone WWTP ........................................................... 109 3. Huainan Western WWTP ....................................................................... 109 4. Shouxian County WWTP ....................................................................... 112 IV. ALTERNATIVE ANALYSIS ............................................................................... 118 A. Comparative analysis of the “with-project” scenario and “without-project” scenario 118 B. Comparison of lake eco-revetment alternatives ............................................. 119 C. Comparison of river revetment alternatives ................................................... 121 D. Comparison of dredging methods.................................................................. 126 E. Comparison of pipeline alternatives ............................................................... 127 1. Design principle of sewage pipelines ..................................................... 127 2. Principles of Pump Station Siting and Design ........................................ 129 VII. ANTICIPATED ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES 1γ1 A. Analysis of anticipated environmental impacts .............................................. 131 2 1. Construction stage ................................................................................. 131 2. Analysis of environmental impacts in the operation stage ...................... 143 B. Mitigation measures for environmental impacts ............................................. 152 1. Environmental impact mitigation measures for the design stage ............ 152 2. Environmental impact mitigation measures
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