ENVIRONMENTAL IMPACT ASSESSMENT REPORT For UNDER GROUND SEWERAGE SCHEME FOR PERUNDURAI TOWN PANCHAYAT BY TWAD BOARD, SEWERAGE DIVISION PERUNDURAI August -2019 EIA Consultant HUBERT ENVIRO CARE SYSTEMS PRIVATE LIMITED, CHENNAI (NABET Accredited vide Certificate No. NABET/EIA/1619/RA0083&) MoEF Recognized Lab vide F. No. Q-15018/13/2016-CPW) 1 TABLE OF CONTENTS EXECUTIVE SUMMARY ...................................................................................................................... 11 Existing Drainage System .................................................................................................................. 11 Need for the Project ......................................................................................................................... 11 Categorization of the Project ............................................................................................................ 12 CHAPTER – 1 INTRODUCTION ............................................................................................................ 20 1.1 Preamble: .............................................................................................................................. 20 1.2 Profile of Perundurai ............................................................................................................. 20 1.3 Existing Drainage System ...................................................................................................... 20 1.4 Need for the Project.............................................................................................................. 21 1.5 Scope of the Proposal ........................................................................................................... 21 1.6 Categorization of the Project ................................................................................................ 21 1.7 Objective of the Report ......................................................................................................... 22 1.8 Environmental Impact Assessment of the project will include ............................................ 22 1.9 Structure of the Report: ........................................................................................................ 23 CHAPTER 2: PROJECT DESCRIPTION ...................................................................................... 24 2.1 Salient Features of the project components are below : ........................................................ 25 2.2 Project Proposal .................................................................................................................... 26 2.2.1 Zone - I .......................................................................................................................... 26 2.2.2 Zone – II ......................................................................................................................... 26 2.2.3 Zone – III ........................................................................................................................ 27 2.2.4 Zone –IV ........................................................................................................................ 27 2.2.5 Project Details ............................................................................................................... 28 2.3 Sewage Treatment Plant ....................................................................................................... 32 2.4 Process Description ............................................................................................................... 34 2.4.1 Sewage Receiver ........................................................................................................... 35 2.4.2 Primary Treatment ........................................................................................................ 36 2.4.3 Fine Screening ............................................................................................................... 36 2.4.4 De-gritting ..................................................................................................................... 36 2.4.5 Flow Measurement ....................................................................................................... 37 2.4.6 Secondary Treatment Process ...................................................................................... 37 2 2.4.7 Tertiary Treatment ........................................................................................................ 37 2.4.8 Chlorination................................................................................................................... 37 2.4.9 Sludge Handling System ................................................................................................ 38 2.4.10 Disposal of Treated Sewage .......................................................................................... 39 2.4.11 Future Expansion .......................................................................................................... 39 2.4.12 Gardening, Landscaping and Tree Plantation ............................................................... 39 2.5 Design Considerations........................................................................................................... 39 2.6 Land Details ........................................................................................................................... 41 3 ENVIRONMENTAL REGULATORY FRAMEWORK ................................................................... 43 3.1 Introduction .......................................................................................................................... 43 3.2 Environmental Legislations ................................................................................................... 43 3.2.1 Water (Prevention and Control of Pollution) Act, 1974 ....................................................... 43 3.2.2 Air (Prevention and Control of Pollution) Act, 1981 ............................................................. 43 3.2.3 Environment (Protection) Act, 1986 ..................................................................................... 44 3.2.4 Public Liability Insurance Act, 1991 ...................................................................................... 44 3.2.5 Solid Waste Management Rules, 2016 ................................................................................ 44 3.2.6 The Noise Pollution (Regulation And Control) Rules, 2000 .................................................. 45 3.3 World Bank Policies............................................................................................................... 45 3.3.1 Environmental Assessment OP/BP 4.01 ............................................................................... 45 3.3.2 Cultural Property - OP 11.03 ................................................................................................. 46 3.3.3 Natural Habitats – OP/BP 4.04 .............................................................................................. 46 3.3.4 Forests – OP/BP 4.36 ............................................................................................................ 46 3.3.5 Pest Management - OP 4.09 ................................................................................................. 47 3.3.6 Involuntary Resettlement - OP/BP 4.12 ................................................................................ 47 3.3.7 Indigenous Peoples – OP/BP 4.20 ......................................................................................... 47 3.3.8 Sustainabilty Guidelines ........................................................................................................ 47 3.4 Legal/Regulatory Clearances For The Project ....................................................................... 48 3.4.1 Clearances/ NOC Required from Competent Authority ....................................................... 48 4 BASELINE ENVIRONMENTAL STATUS ................................................................................... 50 4.1 Preamble ............................................................................................................................... 50 4.2 Environmentally/Ecologically Sensitive Areas ...................................................................... 50 4.3 Physical Conditions ............................................................................................................... 57 3 4.3.1 PIA District Profile ......................................................................................................... 57 4.3.2 Climatic Conditions ....................................................................................................... 57 4.3.3 Natural resources of Erode district ............................................................................... 58 4.3.4 Land Use & Land Cover ................................................................................................. 60 4.3.5 Topography ................................................................................................................... 63 4.3.6 Geology of PIA District .................................................................................................. 65 4.3.7 Geomorphology of PIA District ..................................................................................... 65 4.3.8 Hydrogeology of PIA District ........................................................................................