Environmental Impact Assessment Liza Phase 1 Development Project Esso Exploration and Production Guyana, Limited May 2017 www.erm.com David W. Blaha ERM Partner The business of sustainability -Page Intentionally Left Blank- EEPGL Environmental Impact Assessment Liza Phase 1 Development Project Table of Contents TABLE OF CONTENTS VOLUME I-ENVIRONMENTAL IMPACT ASSESSMENT Environmental Impact statement ............................................................................................................ i EIS Executive Summary ........................................................................................................................ i EIS 1.0 Introduction ......................................................................................................................... iv EIS 1.1 Project Sponsor ................................................................................................................ iv EIS 1.2 Project Context ................................................................................................................. iv EIS 1.3 Purpose of the Project ....................................................................................................... v EIS 1.4 Regulatory Framework and Purpose of this EIA ........................................................ v EIS 2.0 Project Description ............................................................................................................. vi EIS 2.1 Drilling and SURF/FPSO Installation .................................................................... vii EIS 2.2 Production Operations ............................................................................................. viii EIS 2.3 Decommissioning .......................................................................................................... ix EIS 2.4 Onshore, Marine, and Aviation Support ................................................................... ix EIS 2.5 Project Workforce ......................................................................................................... ix EIS 2.6 Project Schedule ............................................................................................................. x EIS 2.7 Public Consultation....................................................................................................... x EIS 2.8 Alternatives .................................................................................................................... x EIS 3.0 Project Impacts.................................................................................................................... xii EIS 3.1 Planned Activities .......................................................................................................... xii EIS 3.1.1 Air Quality ................................................................................................................... xii EIS 3.1.2 Marine Water Quality .............................................................................................. xiii EIS 3.1.3 Marine Sediments and Marine Benthos .................................................................. xiv EIS 3.1.4 Marine Biological Resources ...................................................................................... xv EIS 3.2 Unplanned Events ......................................................................................................... xvi EIS 3.3 Cumulative Impacts .................................................................................................... xviii EIS 3.4 Degree of Irreversible Damage ................................................................................... xix EIS 3.5 Environmental and Socioeconomic Management Plan .......................................... xix EIS 4.0 Conclusions and Recommendations ............................................................................... xx EIS 4.1 Conclusions ...................................................................................................................... xx EIS 4.2 Recommendations ....................................................................................................... xxii Environmental Impact Assessment ....................................................................................................... 1 1.0 Introduction ................................................................................................................................... 1 1.1 Purpose of this EIA ................................................................................................................... 2 1.2 EEPGL Exploration Well Drilling History ........................................................................... 3 1.3 Goals and Objectives of the EIA ............................................................................................ 3 1.4 Components of the EIA ............................................................................................................ 4 May 2017 EEPGL Environmental Impact Assessment Liza Phase 1 Development Project Table of Contents 2.0 Project Description ..................................................................................................................... 13 2.1 Project Location ....................................................................................................................... 13 2.2 Overview of the Development Concept ............................................................................. 16 2.2.1 Development Concept ...................................................................................................... 16 2.2.2 Applicable Codes, Standards, and Management Systems ......................................... 18 2.3 Drilling and Well Design ...................................................................................................... 18 2.3.1 Drilling Program .............................................................................................................. 18 2.3.2 Typical Well Design ........................................................................................................ 19 2.3.3 Drilling Fluids .................................................................................................................. 22 2.3.4 Well Cleanup and Ancillary Processes ......................................................................... 23 2.4 Subsea, Umbilicals, Risers, and Flowlines ........................................................................ 23 2.4.1 Well Flow Connections ................................................................................................... 25 2.4.2 FPSO Topside Subsea Control System ......................................................................... 26 2.4.3 Risers, Flowlines, Umbilicals, and Manifolds ............................................................ 26 2.5 Floating Production, Storage, and Offloading Vessel ..................................................... 28 2.5.1 General Description ......................................................................................................... 28 2.5.2 FPSO Topsides ................................................................................................................. 32 2.5.3 FPSO Process Systems .................................................................................................... 32 2.5.4 FPSO Utility Systems ..................................................................................................... 35 2.5.5 Power Generation System .............................................................................................. 36 2.5.6 Integrated Control and Safety System (ICSS) ............................................................. 37 2.5.7 Communication Systems ................................................................................................ 37 2.5.8 Additional Vessel Systems ............................................................................................. 37 2.5.9 Safety and Personnel Protection Systems .................................................................... 39 2.6 Installation, Hook-up, and Commissioning ...................................................................... 39 2.7 Production Operations ........................................................................................................... 40 2.7.1 Common Flow Assurance Additives ............................................................................. 41 2.7.2 Hydrogen Sulfide (H2S) Management ............................................................................ 42 2.7.3 Marine Safety ................................................................................................................... 42 2.7.4 Offloading Tankers .......................................................................................................... 43 2.8 Onshore, Marine, and Aviation Support ............................................................................ 44 2.8.1 Onshore Supply and Support Activities ....................................................................... 44 2.8.2 Logistical Support ........................................................................................................... 46 2.9 End of Operations (Decommissioning) .............................................................................. 49 2.10 Materials, Emissions, Discharges, and Wastes .................................................................. 49 2.10.1 Materials