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Environment Plan Appendix 9-1 Oil Pollution Emergency Plan (OPEP)

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Environment Plan Appendix 9-1 Oil Pollution Emergency Plan (OPEP) Environment plan Appendix 9-1 Oil pollution emergency plan (OPEP) Stromlo-1 exploration drilling program Equinor Australia B.V. Level 15 123 St Georges Terrace PERTH WA 6000 Australia Rev 2, April 2019 www.equinor.com.au Environment plan, Appendix 9-1 Stromlo-1 exploration drilling program Table of contents Page Part one: Operational response ........................................................................................... 1 OPEP structure ....................................................................................................... 1 Level response structure ......................................................................................... 2 Diesel spill from vessel within petroleum safety zone ............................................. 3 Response flow chart ........................................................................................................................... 3 Notification requirements ................................................................................................................... 3 Surveillance and monitoring ............................................................................................................... 4 Vessel surveillance ............................................................................................................. 4 Aerial surveillance ............................................................................................................... 5 Oil spill trajectory modelling ................................................................................................ 6 Operational and scientific monitoring program .................................................................................. 7 Overall response termination criteria ................................................................................................. 7 Crude oil spill from well ........................................................................................... 8 Response flow chart ........................................................................................................................... 8 Notification requirements ................................................................................................................... 9 Source control .................................................................................................................................. 10 Surveillance and monitoring ............................................................................................................. 12 Vessel surveillance ........................................................................................................... 12 Aerial surveillance ............................................................................................................. 12 Oil spill trajectory modelling .............................................................................................. 13 Satellite imagery ............................................................................................................... 14 Surface slick tracking ........................................................................................................ 14 Airborne remote sensing ................................................................................................... 14 Operational and scientific monitoring program ................................................................................ 14 Chemical dispersant ......................................................................................................................... 15 Dispersant decision-making process ................................................................................ 15 Sub-sea dispersant injection activities .............................................................................. 18 Surface dispersant application activities ........................................................................... 18 Containment and recovery ............................................................................................................... 20 Rev 2, April 2019 www.equinor.com.au Environment plan, Appendix 9-1 Stromlo-1 exploration drilling program Offshore ............................................................................................................................ 20 Near shore ........................................................................................................................ 21 Shoreline protection and clean-up ................................................................................................... 23 Shoreline assessment and treatment recommendations ................................................. 23 Shoreline protection and clean-up .................................................................................... 26 Wildlife response .............................................................................................................................. 27 Overall response termination criteria ............................................................................................... 28 Waste management .............................................................................................. 30 Operational and scientific monitoring program ...................................................... 31 Part two: Planning and preparedness ................................................................................ 38 Introduction ........................................................................................................... 38 Purpose ............................................................................................................................................ 38 Scope ............................................................................................................................................... 38 Petroleum activity .............................................................................................................. 38 Geographic area ............................................................................................................... 39 Health and safety .............................................................................................................. 40 Interface with other plans ................................................................................................................. 40 Spill response framework ...................................................................................... 42 Legislative context ............................................................................................................................ 42 Equinor spill response organisation ................................................................................................. 42 Authorities and control agencies ...................................................................................................... 45 AMSA ................................................................................................................................ 46 Equinor .............................................................................................................................. 46 South Australia .................................................................................................................. 46 Victoria .............................................................................................................................. 47 Tasmania .......................................................................................................................... 47 Western Australia .............................................................................................................. 47 New South Wales ............................................................................................................. 48 Cross-jurisdictional response ............................................................................................ 48 Consultation ..................................................................................................................................... 48 Spill scenarios and response options .................................................................... 50 Rev 2, April 2019 www.equinor.com.au Environment plan, Appendix 9-1 Stromlo-1 exploration drilling program Types of and characteristics of hydrocarbons ................................................................................. 50 Fate and trajectory of spilled hydrocarbons ..................................................................................... 51 Diesel spill from offshore vessel ....................................................................................... 51 Loss of well control ........................................................................................................... 51 Risk EMBA ....................................................................................................................................... 62 NEBA ................................................................................................................................................ 62 Assessment of spill response options for sub-sea release .............................................................. 64 Spill response priorities ......................................................................................... 65 Spill capability ......................................................................................................
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