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Enter Title of Document Exploration Drilling WA-343-P Environment Plan Summary PLN - Plan Document No.: 0000-A7-PLN-60005 Security Classification: Unrestricted DOCUMENT DISTRIBUTION Copy Name Hard Electronic no. copy copy 00 Document Control 01 02 03 04 05 06 07 08 09 10 NOTICE All information contained within this document has been classified by INPEX as Unrestricted and must only be used in accordance with that classification. Any use contrary to this document's classification may expose the recipient and subsequent user(s) to legal action. If you are unsure of restrictions on use imposed by the classification of this document you must refer to 0000-A9-STD-60008, Sensitive Information Protection Standard or seek clarification from INPEX. Uncontrolled when printed. Document no.: 0000-A7-PLN-60005 Page 2 of 224 Security Classification: Unrestricted Revision: 0 Date: 30 July2019 TABLE OF CONTENTS 1 INTRODUCTION .................................................................................... 11 1.1 Scope ...................................................................................................... 11 1.3 Titleholder details ..................................................................................... 12 2 ACTIVITY DESCRIPTION ....................................................................... 14 2.1 Location and timing .................................................................................. 14 2.2 Pre-drill site survey ................................................................................... 14 2.3 Drilling activities ....................................................................................... 14 2.4 Indicative drilling method .......................................................................... 14 2.5 Drilling fluids and chemical selection ........................................................... 17 2.6 Drill cuttings ............................................................................................ 17 2.7 Cementing ............................................................................................... 17 2.8 Wireline formation evaluation ..................................................................... 18 2.9 Gas venting ............................................................................................. 18 2.10 Well abandonment .................................................................................... 18 2.11 Contingent drilling activities ....................................................................... 19 2.12 Semi-submersible MODU and supporting vessels and aircraft ......................... 20 2.13 Anchoring ................................................................................................ 20 3 EXISTING ENVIRONMENT ..................................................................... 21 3.1 Regional setting ........................................................................................ 21 3.2 Key ecological features .............................................................................. 22 3.3 Australian marine parks ............................................................................. 27 3.4 State and Territory reserves and marine parks ............................................. 32 3.5 International Marine Parks ......................................................................... 36 3.6 Wetlands of conservational significance ....................................................... 36 3.7 Physical environment ................................................................................ 40 3.8 Biological environment .............................................................................. 41 3.9 Socioeconomic and cultural environment ..................................................... 50 4 STAKEHOLDER CONSULTATION ............................................................ 62 4.1 Stakeholder identification and classification .................................................. 62 4.2 Stakeholder engagement ........................................................................... 62 4.3 Stakeholder monitoring and reporting ......................................................... 63 4.4 Stakeholder grievance management ........................................................... 63 4.5 Consultation summary ............................................................................... 63 4.6 Relevant matters raised by stakeholders ...................................................... 68 4.7 Ongoing stakeholder consultation ............................................................... 78 5 ENVIRONMENTAL IMPACT AND RISK ASSESSMENT METHODOLGY ....... 80 5.1 Establishment of context ........................................................................... 80 5.2 Identification of aspects, hazards and threats ............................................... 80 5.3 Identify potential consequence ................................................................... 82 5.4 Identify existing design safeguards/controls ................................................. 82 Document no.: 0000-A7-PLN-60005 Page 3 of 224 Security Classification: Unrestricted Revision: 0 Date: 30 July2019 5.5 Propose additional safeguards (ALARP evaluation) ........................................ 82 6 IMPACT AND RISK ASSESSMENT ........................................................... 86 6.1 Light emissions......................................................................................... 86 6.2 Atmospheric emissions .............................................................................. 88 6.3 Routine discharges to sea .......................................................................... 95 6.4 Waste management ................................................................................ 119 6.5 Noise and vibration ................................................................................. 121 6.6 Loss of containment ................................................................................ 130 6.7 Introduction of invasive marine species (IMS) ............................................ 136 6.8 Interaction with marine fauna .................................................................. 142 6.9 Seabed disturbance ................................................................................ 147 6.10 Physical presence - disruption to other marine users ................................... 151 7 EMERGENCY CONDITIONS .................................................................. 155 7.1 EMBA based on oil-spill modelling ............................................................. 155 7.2 Spill Impact Mitigation Assessment ........................................................... 183 7.3 Oil spill response arrangements and capability evaluation ............................ 185 8 MONITORING ENVIRONMENTAL PERFORMANCE ................................. 215 8.1 Performance reporting to regulator ........................................................... 223 9 REFERENCES ....................................................................................... 224 LIST OF TABLES Table 1-1: Overview of the activity description ......................................................... 12 Table 1-2: Titleholder details ................................................................................. 13 Table 1-3: Titleholder nominated liaison officer ........................................................ 13 Table 2-1: Well details .......................................................................................... 15 Table 2-2: Drilling contingencies ............................................................................. 19 Table 3-1: Key ecological features located in WA-343-P and/or the EMBA .................... 23 Table 3-2: Australian Marine Parks within the EMBA .................................................. 28 Table 3-3: State or Territory Reserve/Marine Parks within the EMBA ........................... 33 Table 3-4: Wetlands of conservational significance located within the EMBA ................. 37 Table 3-5: Listed threatened and/or migratory species under the EPBC Act potentially occurring within the EMBA ..................................................................... 44 Table 3-6: Commonwealth-managed commercial fisheries (AFMA-managed) ............... 51 Table 3-7: State-managed commercial fisheries (WA Department of Primary Industries and Regional Development – managed/NT Department of Primary Industry and Resources) ..................................................................................... 52 Table 4-1: Stakeholder engagement summary ......................................................... 63 Table 4-2: Summary of relevant matters, objections, claims or concerns from stakeholder consultation ......................................................................................... 69 Table 4-3: Ongoing stakeholder consultation ............................................................ 78 Table 5-1: Principles of ecological sustainable development ....................................... 84 Table 6-1: Impact and risk evaluation – change in ambient light levels from navigational lighting on MODU and vessels ................................................................. 86 Document no.: 0000-A7-PLN-60005 Page 4 of 224 Security Classification: Unrestricted Revision: 0 Date: 30 July2019 Table 6-2: Impact and risk evaluation – atmospheric emissions from MODU and vessels .........................................................................................................
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