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EIA Report of Ningru PML Block EIA Study for Onshore Oil & Gas Exploration & Development Drilling and Production in Ningru Oil & Gas Field under Ningru PML Changlang and Namsai Districts, Arunachal Pradesh Draft Report 4th February 2019 Project No. 0486041 www.erm.com The business of sustainability Document details The details entered below are automatically shown on the cover and the main page footer. PLEASE NOTE: This table must NOT be removed from this document. Document title EIA Study for Onshore Oil & Gas exploration & development drilling and production in Ningru Oil & Gas Field in Changlang and Namsai Districts under Ningru PML Document subtitle Draft Report Project No. 0486041 Date 4 February 2019 Version 1.0 Author Salil Das and Team of FAEs Client Name Oil India Limited Document history ERM approval to issue Version Revision Author Reviewed by Name Date Comments Draft 01 Salil Das and Debanjan Debanjan 04.02.19 Team of Bandyopadhyay Bandyopadhyay FAEs www.erm.com Client: Oil India Limited Project No.: 0486041 4 February 2019 Signature page 4th February 2019 EIA Study for Onshore Oil & Gas Exploration & Development Drilling and Production in Ningru Oil & Gas Field under Ningru PML Changlang and Namsai Districts, Arunachal Pradesh Draft Report Name: Salil Das Name: Debanjan Bandyopadhyay Job title: EIA Coordinator Job title: Partner ERM India Private Limited Building 10 I Tower A I 4th Floor I DLF Cyber City I Gurgaon I INDIA - 122002 +91 124 4170 300 (switchboard) © Copyright 2019 by ERM Worldwide Group Ltd and / or its affiliates (“ERM”). All rights reserved. No part of this work may be reproduced or transmitted in any form, or by any means, without the prior written permission of ERM www.erm.com Client: Oil India Limited Project No.: 0486041 4 February 2019 EIA Study for Onshore Oil & Gas exploration & development drilling and CONTENTS production in Ningru Oil & Gas Field in Changlang and Namsai Districts under Ningru PML Draft Report CONTENTS EXECUTIVE SUMMARY ................................................................................................................. I 1. INTRODUCTION .................................................................................................................. 1 1.1 Background ........................................................................................................................... 1 1.2 Objective of the EIA Study .................................................................................................... 1 1.3 Scope of the Study ............................................................................................................... 1 1.4 Compliance to ToR ............................................................................................................... 1 1.5 Limitations............................................................................................................................. 5 1.6 Layout of the Report ............................................................................................................. 5 2. PROJECT DESCRIPTION ................................................................................................... 7 2.1 Overview of the Project ......................................................................................................... 7 2.2 Project activities .................................................................................................................... 7 2.3 Field Location and Accessibility ............................................................................................ 7 2.3.1 Field Location....................................................................................................... 7 2.3.2 Accessibility ....................................................................................................... 12 2.4 Environmental Setting ......................................................................................................... 14 2.4.1 Ningru Field........................................................................................................ 14 2.4.2 Wells and Production Facilities .......................................................................... 16 2.5 Existing Activities in the Block ............................................................................................. 17 2.6 Well Drilling ......................................................................................................................... 17 2.6.1 Pre-drilling Activity ............................................................................................. 17 2.6.2 Drilling Activity.................................................................................................... 19 2.6.3 Well Decommissioning ....................................................................................... 21 2.7 Production Installations ....................................................................................................... 22 2.7.1 Field Group Gathering System (FGGS) ............................................................. 22 2.7.2 Oil Collection Station (OCS) .............................................................................. 22 2.7.3 Gas Compressor Station (GCS)......................................................................... 24 2.8 Interconnecting Pipelines .................................................................................................... 25 2.9 Utilities and Resource Requirements .................................................................................. 25 2.9.1 Power requirement and generation .................................................................... 25 2.9.2 Fuel Consumption, Supply and Storage ............................................................ 26 2.9.3 Water Requirements .......................................................................................... 26 2.9.4 Manpower .......................................................................................................... 27 2.10 Pollution Sources and Characterization .............................................................................. 27 2.10.1 Noise .................................................................................................................. 27 2.10.2 Air Emissions ..................................................................................................... 28 2.10.3 Liquid wastes ..................................................................................................... 29 2.10.4 Solid and Hazardous Waste Streams ................................................................ 29 2.10.5 Drilling Hazards .................................................................................................. 30 2.11 Project Timeline .................................................................................................................. 30 2.12 Project Cost ........................................................................................................................ 30 3. DESCRIPTION OF THE ENVIRONMENT ......................................................................... 31 3.1 Study Area .......................................................................................................................... 31 3.2 Study Period ....................................................................................................................... 31 3.3 Physical Environment ......................................................................................................... 31 3.3.1 Topography ........................................................................................................ 31 3.3.2 Land use and Land Cover .................................................................................. 31 3.3.3 Soil Quality ......................................................................................................... 35 3.3.4 Climate and Meteorology ................................................................................... 39 www.erm.com Client: Oil India Limited Project No.: 0486041 4 February 2019 EIA Study for Onshore Oil & Gas exploration & development drilling and CONTENTS production in Ningru Oil & Gas Field in Changlang and Namsai Districts under Ningru PML Draft Report 3.3.5 Ambient Air Quality ............................................................................................ 43 3.3.6 Ambient Noise Quality ....................................................................................... 51 3.3.7 Hydrogeology ..................................................................................................... 52 3.3.8 Groundwater Quality .......................................................................................... 53 3.3.9 Drainage ............................................................................................................ 60 3.3.10 Surface Water Quality ........................................................................................ 62 3.3.11 Traffic Analysis ................................................................................................... 66 3.3.12 Natural Disaster ................................................................................................. 67 3.4 Biological Environment ....................................................................................................... 68 3.4.1 Introduction ........................................................................................................ 68 3.4.2
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