IND:Assam Power Sector Enhancement Investment Program
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Initial Environment Examination Project Number: 41614-023 / 41614-033 October 2017 IND: Assam Power Sector Enhancement Investment Program - Tranche 1 & 2 Submitted by Assam Power Distribution Company Limited, Guwahati This report has been submitted to ADB by the Assam Power Distribution Company Limited, Guwahati and is made publicly available in accordance with ADB’s Public Communications Policy (2011). It does not necessarily reflect the views of ADB. This report is an updated version of the IEE report posted in August 2010 available on https://www.adb.org/projects/documents/assam-power-sector-enhancement-investment- program-0. This updated initial environment examination report 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. 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. ASSAM ELECTRICITY GRID CORPORATION LIMITED INITIAL ENVIRONMENTAL EXAMINATION & ENVIRONMENT MANAGEMENT PLAN TRANSMISSION SYSTEM EXPANSION ASSAM POWER SYSTEM ENHANCEMENT PROJECT GUWAHATI: NOVEMBER 2014 Assam Electricity Grid Corporation Ltd. III TABLE OF CONTENTS CHAPTER TITLE PAGE NO Chapter – 1 INTRODUCTION 1 1.1 Introduction and Scope of Assessment 2 1.2 Background and Present Scenario 3 1.3 Existing Transmission Infrastructure 6 EXHIBITS 1.1 Details of Existing Substations 7 1.2 Existing Transmission Lines 9 1.3 Photographic views of ongoing Assam power 13 sector development program Chapter – 2 DESCRIPTION OF THE PROJECT 17 2.1 Need for the Project 18 2.2 Basic Objectives 21 2.3 Proposed Transmission System Expansion 24 2.4 Cost Benefit of the Project 42 2.5 Completion Schedule 42 EXHIBITS 2.1 Peak demand and transformer capacity 33 2.2 Refurbishment of existing substations: list of 39 equipments and substations 2.3 to 2.9 Construction schedules 43 – 87 Chapter – 3 DESCRIPTION OF THE ENVIRONMENT 88 3.1 Physical Resources 89 3.2 Ecology: Fauna, Flora, and Forests 101 3.3 Socio-economic Conditions 102 3.4 Environmental Sustainability 104 Chapter – 4 SCREENING OF POTENTIAL 105 ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES 4.1 Environmental Effects Due to Project Location 106 and Design 4.2 Environmental Effects During Construction 107 4.3 Environmental Effects During Operations 118 4.4 Potential Cumulative and Induced Impacts 122 Chapter – 5 ENVIRONMENTAL MANAGEMENT AND 124 MONITORING PLAN 5.1 Description Of Monitoring Programs And 124 Parameters 5.2 Public Consultation Activities 128 5.3 Description Of Responsibilities For Mitigation 140 And Monitoring Requirements 5.4 Description Of Responsibilities For Reporting 158 Design Transmission Index Assam Electricity Grid Corporation Ltd. III CHAPTER TITLE PAGE NO and Review 5.5 Work Plan 158 5.6 Environmentally Responsible Procurement Plan 160 5.7 Preliminary Cost Estimates 160 5.8 Mechanisms For Feedback And Adjustment 164 Chapter – 6 FINDINGS, RECOMMENDATIONS, AND 166 CONCLUSIONS 6.1 Findings and Recommendations 167 6.2 Conclusions 167 Annexures 1.0 Site Sketch Maps and Photos - 2009 2.0 Site Sketch Maps and Photos - 2010 3.0 Access to Reserved Forests 4.0 Associated facilities, Due Diligence, and Cumulative and Induced Impacts 5.0 Summary Of National, Local, Other Applicable Environmental Laws, Regulation, And Standards 6.0 Map of Diversion Section (AP6/0 to AP7/0) 6.1 Map of Diversion Section (AP25/0 to AP27/0) 6.2 Map of Diversion Section (AP43/0 to AP52/0) 6.3 Map of Diversion Section (AP89/0 to AP97/0) 6.4 Map of Diversion Section (AP109/0 to AP117/0) 6.5 Map of Diversion Section (AP120A/0 to AP138/0) 7.0 Ambient Air Quality Monitoring Results 8.0 Ambient Noise Level Monitoring Results 9.1 National Ambient Air Quality Standards, 2009 9.2 National Ambient Noise Standard 10.0 Trees within ROW of the Diverted Sections of BTPS – Rangia T/L 11.0 Photographs of Public Consultation 12.0 Attendance Sheet of Public Consultation Design Transmission Index Assam Electricity Grid Corporation Ltd. III Abbreviations and Terminology ADB Asian Development Bank EMF Electromagnetic Fields EMP Environmental Monitoring Plan EIA Environment Impact Assessment IEE Initial Environment Examination MOEF&CC Ministry of Environment Forests & Climate Change SEIA Summary Environment Impact Assessment SIEE Summary Initial Environmental Examination ELECTRICAL TERMINOLOGY V Volt Unit of Voltage kV Kilovolt 1000 volts W Watt Unit of active power kW Kilowatt 1000 watts MW Megawatt 1000 kW kWh Kilowatt hour Unit of energy MWh Megawatt hour 1000 kWh VA Volt ampere Unit of apparent power MVA Million volt ampere 106 VA Transmission System 400 kV, 220 kV, 132 kV and/or 66 kV lines supplying (incoming & outgoing feeder) grid substations (Substation) with primary voltage of 400 kV, 220 kV, 132 kV, or 66 kV LILO Line - In - Line - Out WEIGHTS AND MEASURES C degree Celsius DB(A) decibels measured in the audible noise bands Ha Hectare Km Kilometre M Meter m3 cubic meter kg Kilogram mg/l milligram per liter t Ton t/a ton per annum NOTES (i) The fiscal year of the Government ends March 31 (ii) In this report “$” refers to US dollars. Design Transmission Index Assam Electricity Grid Corporation Ltd. 1 CHAPTER - 1 INTRODUCTION Design Transmission Chapter-1: Introduction Assam Electricity Grid Corporation Ltd. 2 CHAPTER-1 INTRODUCTION 1.1 INTRODUCTION AND SCOPE OF ASSESSMENT 1. The Government of India (GOI) and Government of Assam (GOA) have requested Asian Development Bank (ADB) to provide $200 million in loan funding via a multi-tranche financing facility (MFF) to support continued investment in the state power sector, specifically for transmission and distribution system expansion and upgrades. Government of Assam (GoA) and Assam State Electricity Board (ASEB) are the Executing Agencies for the MFF. As a part of the reform program, GoA have unbundled ASEB into three companies’ viz. Assam Power Generation Corporation Limited (APGCL), Assam Electricity Gird Corporation Ltd. (AEGCL) and Assam Power Distribution Company Ltd. (APDCL). AEGCL, the successor company of unbundled ASEB is the Implementing Agency (IA) for Tranche I and Tranche II of MFF. 2. The MFF will partly finance the expansion and augmentation of the transmission and distribution (T&D) networks. The proposed investments are necessary to: (i) facilitate increased power transfers to accommodate increased demand and economic growth; (ii) improve supply-side energy efficiency by system de-bottlenecking and reducing technical losses; (iii) reduce the intensity of greenhouse gas (GHG) and other emissions via improved system efficiency; (iv) support expanded private sector participation in distribution system operations and other energy services; and (v) facilitate poverty reduction via improved electricity services and economic growth. 3. The Implementing Agency (IA), Assam Electricity Grid Corporation Ltd. (AEGCL), has updated this Initial Environmental Examination (IEE) which was prepared earlier for the proposed transmission system project. This IEE has been updated as 220 kV BTPS (Salakati) - Rangia transmission line is proposed to be diverted at six locations. The IEE describes the proposed transmission system investments, environmental benefits and negative impacts, public consultations, proposed mitigation measures, and preliminary environmental management plan 1 (EMP). 4. The proposed Project is classified as Category B under Asian Development Bank (ADB) Safeguard Policy Statement (2009).The IEE of the proposed investments has been carried out following the Asian Development Bank’s (ADB) Safeguard Policy Statement (2009), Environmental Assessment Guidelines (2003), and the Government of India (GOI) environmental Assessment regulations and 1 The IEE and EMP may be updated periodically if necessary during project implementation Design Transmission Chapter-1: Introduction Assam Electricity Grid Corporation Ltd. 3 guidelines. Summary of National, Local, Other Applicable Environmental Laws, Regulation, and Standards are given in Annexure 5.0. The primary statutory body responsible for ensuring environmental compliance by the Project is the Assam Department of Environment and Forests (ADEF), and the Assam State Pollution 2,3 Control Board (APCB) which operates under the aegis of ADEF. 5. An Environmental Assessment and Review Framework (EARF)4 has been prepared which is applicable to all investments funded by the proposed MFF, including subsequent tranches that have not been fully defined. The EARF outlines the policies, procedures, and institutional requirements for preparing subsequent tranches. The EAs are responsible for preparing the required environmental assessments and obtaining ADB concurrence before implementation. These approvals must be in place before contracts are finalized and work begins. The EARF specifically notes that sensitive areas will be avoided at the design and planning stage to the maximum extent possible. ADB requirements for environment Category B-sensitive (or A) projects may be applied in cases where technical design constraints require access to reserved forests or other environmentally 5 sensitive areas. 6. A preliminary EMP that will apply to all components and subprojects has been prepared (see Chapter 5). The EMP is developed based on environmental analysis of the proposed transmission