North West Shelf Renaissance North Multi Client Marine Seismic Surveys
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NORTH WEST SHELF RENAISSANCE NORTH MULTI CLIENT MARINE SEISMIC SURVEYS ENVIRONMENT PLAN SUMMARY TGS-NOPEC Geophysical Company Pty Ltd July 2018 TGS NWSR North MC MSS - Environment Plan Summary Document Title: TGS North West Shelf Renaissance North Multi Client Marine Seismic Surveys Environment Plan Summary Revision Status: 0 DISTRIBUTION LIST Copies To: 01 TGS - Document Control External 02 National Offshore Petroleum Safety and Environmental Management Authority (NOPSEMA) DOCUMENT REVISION HISTORY Rev Description Date Prepared by Re viewed Approved For submission to Scope 0 June 2018 TGS NOPSEMA Resources NOPSEMA requests Scope 1 July 2018 TGS incorporated Resources PREPARED BY: Scope Resources (WA) Pty Ltd Page ii TGS NWSR North MC MSS - Environment Plan Summary TABLE OF CONTENTS INTRODUCTION ....................................................................................................................................... 7 BACKGROUND .............................................................................................................................................. 7 TITLEHOLDER DETAILS .................................................................................................................................. 7 DESCRIPTION OF ACTIVITY ....................................................................................................................... 8 LOCATION OF ACTIVITY ................................................................................................................................ 8 TIMING OF ACTIVITY ..................................................................................................................................... 8 SEISMIC PROGRAMME ................................................................................................................................. 8 Survey Parameters ............................................................................................................................... 8 VESSELS ........................................................................................................................................................ 9 Seismic Survey Vessels ......................................................................................................................... 9 Support Vessel ..................................................................................................................................... 9 DESCRIPTION OF THE ENVIRONMENT ....................................................................................................... 9 REGIONAL SETTING ...................................................................................................................................... 9 KEY ECOLOGICAL FEATURES ....................................................................................................................... 10 Exmouth Plateau ............................................................................................................................... 10 Continental Slope Demersal Fish Communities ................................................................................. 10 Glomar Shoal ..................................................................................................................................... 11 Ancient Coastline at 125 m Depth Contour ....................................................................................... 11 PROTECTED MARINE FAUNA ...................................................................................................................... 11 Biologically Important Areas ............................................................................................................. 15 SOCIO-ECONOMIC ENVIRONMENT ............................................................................................................ 15 COMMERCIAL FISHERIES ................................................................................................................... 15 TRADITIONAL FISHERIES .................................................................................................................... 21 PETROLEUM EXPLORATION AND PRODUCTION ................................................................................ 21 COMMERCIAL SHIPPING .................................................................................................................... 21 TOURISM AND RECREATION .............................................................................................................. 21 Defence Activities .............................................................................................................................. 21 Cultural Heritage ............................................................................................................................... 21 Heritage Places .................................................................................................................................. 21 Australian Marine Parks .................................................................................................................... 22 WA State Marine Parks and Reserves ............................................................................................... 23 Ramsar Wetlands .............................................................................................................................. 23 World Heritage Properties ................................................................................................................. 23 ENVIRONMENTAL RISK ASSESSMENT ......................................................................................................24 RISK ASSESSMENT METHODOLOGY ........................................................................................................... 24 Risk Identification and Analysis ......................................................................................................... 25 Decision Making Framework ............................................................................................................. 25 Decision Making Tools ....................................................................................................................... 26 Page iii TGS NWSR North MC MSS - Environment Plan Summary Categorisation of Environmental Consequences ............................................................................... 27 Assessment of Likelihood of Occurrence............................................................................................ 27 RISK EVALUATION ....................................................................................................................................... 30 Demonstration of ALARP ................................................................................................................... 30 Demonstration of Acceptability ......................................................................................................... 31 ENVIRONMENTAL RISK EVALUATION ......................................................................................................32 PLANNED ACTIVITIES (ROUTINE AND NON-ROUTINE) ................................................................................ 33 NOISE EMISSIONS (NON- SEISMIC) .................................................................................................... 33 Vessel Light Emissions ....................................................................................................................... 35 Interaction with Fisheries, Diving, Shipping and Petroleum Service Vessels ..................................... 37 Ballast Water Discharge, and Biofouling of Vessel Hull, Other Niches and Immersible Equipment .. 42 Underwater Noise Emissions from Discharge of Acoustic Array ....................................................... 45 Discharge of Bilge Water, Sewage and Food Wastes (putrescibles) ................................................. 90 Reduced Air Quality from Atmospheric Emissions ............................................................................. 92 UNPLANNED ACTIVITIES (ACCIDENTS / INCIDENTS) ................................................................................... 93 Collision between Vessels / Towed Array and Marine Fauna ............................................................ 93 Vessel Grounding, Anchoring and Equipment Dragging or Loss ....................................................... 95 Accidental Release of Hazardous or Non-hazardous Materials......................................................... 97 Hydrocarbon Release Caused by Topsides (Vessel) Loss of Containment .......................................... 98 Hydrocarbon Release Caused by Transfer Spill or Vessel Collision between Survey Vessel and Support Vessel or Third-Party Vessel .............................................................................................................................. 100 IMPLEMENTATION STRATEGY ............................................................................................................... 108 ONGOING MONITORING .......................................................................................................................... 108 Pre-survey planning ......................................................................................................................... 109 OIL POLLUTION EMERGENCY PLAN .......................................................................................................... 109