Sole-3 & 4 Drilling and Sole-2 Well Abandonment EP Summary CONTROLLED DOCUMENT SOL-EN-EMP-0006 Rev 0 Sole-3 & 4 Drilling and Sole-2 Well Abandonment EP Summary Table of Contents Sole-3 & 4 Drilling and Sole-2 Well Abandonment .......................................................................... 1 EP Summary ........................................................................................................................................ 1 Table of Contents ................................................................................................................................ 2 1.0 Introduction ............................................................................................................................... 5 1.1 Titleholder Nominated Liaison Person ........................................................................................ 5 2.0 Location of the Activity ............................................................................................................ 6 2.1 Location ....................................................................................................................................... 6 2.2 Operational Area ......................................................................................................................... 6 2.3 Sole VIC/L32 Hydrocarbon System Overview ............................................................................ 6 3.0 Description of the Activity ....................................................................................................... 8 3.1 Timing of the Activity ................................................................................................................... 8 3.2 MODU positioning (Setting and testing anchors)........................................................................ 8 3.3 Blowout Preventer (BOP) Installation and Function Testing ....................................................... 8 3.4 Sole 3 & 4 Drilling, Completion, Clean-up and Suspension ....................................................... 8 3.5 Well Abandonment (Sole-2) ...................................................................................................... 10 3.6 Support Operations ................................................................................................................... 10 4.0 Description of the Environment ............................................................................................ 12 4.1 Regional Setting ........................................................................................................................ 12 4.2 Environment that May be Affected ............................................................................................ 13 4.3 Ecological and Social Receptors .............................................................................................. 14 4.4 Conservation Values within the EMBA...................................................................................... 23 5.0 Environmental Impact and Risk Assessment Methodology .............................................. 24 5.1 Impact and Risk Evaluation ...................................................................................................... 25 5.2 Monitor and Review .................................................................................................................. 29 6.0 Risk and Impact Evaluation ................................................................................................... 30 6.1 Physical Interaction (Collision with Marine Fauna) ................................................................... 30 6.2 Physical Interaction (Other Marine Users) ................................................................................ 31 6.3 Light Emissions ......................................................................................................................... 32 6.4 Underwater Sound Emissions................................................................................................... 33 6.5 Physical Presence – Seabed Disturbance ................................................................................ 36 6.6 Atmospheric Emissions ............................................................................................................. 37 6.7 Planned Discharge – Drilling Cuttings and Fluid ...................................................................... 38 6.8 Planned Discharge – Cement ................................................................................................... 41 6.9 Planned Discharge – Cooling Water and Brine ........................................................................ 42 6.10 Planned Discharge - Treated Bilge ........................................................................................... 44 6.11 Planned Discharge - Sewage and Food Waste ........................................................................ 45 6.12 Planned Discharge - Ballast water and Biofouling .................................................................... 48 6.13 Operational Discharges - Subsea ............................................................................................. 49 6.14 Operational Discharges - Surface ............................................................................................. 50 6.15 Accidental Release - Waste ...................................................................................................... 51 6.16 Accidental Release – Loss of Containment (Minor).................................................................. 52 6.17 Accidental Release – Loss of Containment (Vessel Collision) ................................................. 53 6.18 Accidental Release – Loss of Containment (Loss of Well Control) .......................................... 57 SOL-EN-EMP-0006 / REV 0 / UNCONTROLLED WHEN PRINTED Page 2 of 90 Sole-3 & 4 Drilling and Sole-2 Well Abandonment EP Summary 7.0 Ongoing Monitoring of Environmental Performance .......................................................... 59 7.1 Cooper Energy’s Health Safety Environment and Community Management System (HSEC MS) ............................................................................................................................................ 59 7.2 Environmental Performance Monitoring & Reporting ............................................................... 59 7.3 Management of Change (MoC) ................................................................................................ 60 8.0 Emergency Response Arrangements ................................................................................... 62 8.1 Oil Spill Response Strategies ................................................................................................... 62 8.2 Risk Assessment of Oil Spill Response Strategies ................................................................... 66 8.3 Emergency (Oil Spill) Response Arrangements and Capability ............................................... 67 8.4 Operational and Scientific Monitoring Plan (OSMP) ................................................................. 69 9.0 Stakeholder Consultation ...................................................................................................... 70 9.1 Consultation Approach .............................................................................................................. 71 9.2 Ongoing Consultation ............................................................................................................... 72 10.0 References ............................................................................................................................... 82 11.0 Acronyms and Units ............................................................................................................... 84 11.1 Acronyms .................................................................................................................................. 84 11.2 Units .......................................................................................................................................... 89 List of Figures Figure 1-1 Location of Vic/RL32 .............................................................................................................. 5 Figure 4-1 Images from Patricia-Baleen pipeline survey showing medium sand habitat (left) and hard calcareous areas (right) ........................................................................................................................ 13 Figure 4-2 EMBA for the Sole-3 & 4 Drilling and Sole-2 Well Abandonment Activities ......................... 13 Figure 5-1: AS/NZS ISO 31000 – Risk Management Methodology ...................................................... 24 Figure 5-2: ALARP Decision Support Framework ................................................................................. 27 List of Tables Table 2-1: Sole Well Coordinates (Surface Locations) (GDA94) ............................................................ 6 Table 2-2 Physical Characteristics of Sole Gas ...................................................................................... 6 Table 4-1: Presence of Ecological Receptors within the Operational Area and the EMBA .................. 15 Table 4-2: Presence of Social Receptors within the Operational Area and the EMBA ......................... 19 Table 4-3: Summary of conservation values and sensitivities within the EMBA ..................................