EA-60-RI-00186.02 Varanus Island Hub Operations Oil Pollution Emergency Plan PROJECT / FACILITY Varanus Island REVIEW INTERVAL (MONTHS) 30 Months SAFETY CRITICAL DOCUMENT NO Reviewer/s Owner Approver Managerial/Technical/Site Rev Senior Advisor – Oil Spill Team Lead – Security & Manager - HSE Response Emergency Response 9 Holders of controlled copies: Perth Library Any hard copy of this document, other than those identified above, are uncontrolled. Please refer to the Santos Offshore Business Document Management System for the latest revision. Rev Rev Date Amendment 9 03/04/2020 Revised following NOPSEMA opportunity to modify and resubmit 8 17/12/2019 Revised to incorporate NOPSEMA Request for Further Written Information 7 31/07/2019 5-year revision to NOPSEMA 6 14/06/2017 Revised to incorporate DMIRS comments 5 17/03/2017 Regulatory revision to DMIRS 4 03/09/2014 Revised to incorporate NOPSEMA Request for Further Written Information (refer MOC-63) and DMIRS comments 3 10/07/2014 Submitted to DMIRS (03/09/2014) 2 16/06/2014 Revised activity description for State waters. 1 20/02/2014 Submitted to DMIRS (10/07/2014) 0 05/09/2013 Revised to incorporate DMIRS comments and changed Commonwealth water spill scenarios. Santos Ltd | EA-60-RI-00186.02 Page 2 of 291 Distribution List OPEP Distribution Electronic Hardcopy Intranet – Emergency Preparedness ● General Manager – Gas Assets link Varanus Island Field Supervisor / Varanus Island Control Room link ● Manager - HSE link Team Leader - Security & ER link Senior Spill Response Advisor link IMT Room – Perth office ● x 4 CCT Room – Perth office ● AMOSC ● DoT ● AMSA ● OSRL ● Santos Ltd | EA-60-RI-00186.02 Page 3 of 291 How to use this OPEP in the event of a spill Sections 1 to 4 contain background information only: - Activity description and location, - OPEP requirements, - Oil Spill Response Framework o Spill Response Levels o Jurisdiction Authorities and Control Agencies o Santos WA Incident Management Structure (Roles and responsibilities; Training and exercises) o Integration with other Organisations - Spill Modelling and Protection Priorities - Response Options and NEBA Sections 5 to 19 contain directions on how to respond to the spill: - Initial Response (First Strike Activation) - Notifications and Reporting - IAP Planning - Spill Response Plans: o Source Control Plan o Monitor and Evaluate Plan o Mechanical Dispersion Plan o Containment and Recovery Plan o Shoreline Protection Plan o Shoreline Clean-up Plan o Onshore Response Plan o Oiled Wildlife Response Plan o Waste Management Plan o Scientific Monitoring Plan o Forward Operations Plan o Spill Response Termination Sections 20 to 21 contain information on: - Document Review and Revision - OPEP Custodian - References Santos Ltd | EA-60-RI-00186.02 Page 4 of 291 Contents Sections 1 to 4 contain background information only: 4 Sections 5 to 19 contain directions on how to respond to the spill: 4 Sections 20 to 21 contain information on: 4 Contents 5 List of Appendices 9 List of Figures 9 List of Tables 9 1 Oil Pollution Emergency Plan Overview 13 1.1 Description of Varanus Island Hub Operations 13 1.2 Purpose and Scope of OPEP 20 1.3 High Level Objectives of OPEP 20 2 Oil Spill Response Framework 21 2.1 Spill Response Levels 21 2.2 Jurisdictional Authorities and Control Agencies 21 2.3 Santos WA Incident Management Structure 24 2.4 Integration with other Organisations 39 2.5 Interface with External Plans 42 2.6 Interface with Internal Documents 43 2.7 Cost Recovery 44 3 Spill Risk and Protection Priorities 45 3.1 Spill risk scenarios 45 3.2 Hydrocarbon Characteristics and Behaviour 49 3.3 Offshore spills (State and Commonwealth waters) 49 3.4 Onshore spills 55 3.5 -Identify Priority Protection Areas 63 4 Response Option Selection 67 4.1 Evaluation of Applicable Response Strategies 67 4.2 Resource Arrangements and Demonstration of ALARP 77 4.3 Net Environmental Benefit Analysis (NEBA) 97 5 Initial Response (First Strike Activations) 107 5.1 Level 1 offshore spills 107 5.2 Level 2/3 offshore petroleum activity spills (platforms, monopods, pipelines and subsea installations) 108 5.3 Level 2 offshore vessel-based Spills 111 5.4 Onshore spills 112 6 Notification and Reporting Plan 114 6.1 Regulatory notification and reporting 114 6.2 Level 2/3 spill response support notifications 120 Santos Ltd | EA-60-RI-00186.02 Page 5 of 291 7 Incident Action Plan (IAP) 125 8 Source Control 127 8.1 Vessel and Platform Releases (hydrocarbon storage, handling and transfer) 127 8.2 Vessel Tank Rupture 129 8.3 Loss of Well Control 132 8.4 Pipeline release 141 8.5 Crude oil cargo loading 142 8.6 Onshore Hydrocarbon spills 145 8.7 Source Control Environmental Performance 147 9 Monitor and Evaluate Plan (Operational Monitoring) 150 9.1 Vessel Surveillance 150 9.2 Aerial Surveillance 152 9.3 Tracking Buoys 155 9.4 Spill Fate Modelling 157 9.5 Satellite Imagery 161 9.6 Initial Oil Characterisation 162 9.7 Operational Water Quality Monitoring 166 9.8 Low Flow Well Leak Monitoring 174 9.9 Shoreline and Coastal Habitat Assessment 176 9.10 Operational Monitoring Data Collection and Frequency 178 9.11 Monitor and Evaluate Plan Environmental Performance 182 10 Mechanical Dispersion Plan 188 10.1 Mechanical Dispersion Environmental Performance 190 11 Offshore Containment and Recovery Plan 191 11.1 Equipment and Personnel 196 11.2 Deployment Locations 196 11.3 Decanting 197 11.4 Offshore Containment and Recovery Environmental Performance 197 12 Shoreline Protection Plan 199 12.1 Equipment and Personnel 204 12.2 Deployment Locations 205 12.3 Protection and Deflection Plan Environmental Performance 205 13 Shoreline Clean Up Plan 208 13.1 Equipment and Personnel 211 13.2 Clean-up activities 212 13.3 Deployment locations 213 13.4 Shoreline Clean-up Environmental Performance 213 14 Onshore Response 216 14.1 Source Control 219 Santos Ltd | EA-60-RI-00186.02 Page 6 of 291 14.2 Containment and clean-up 220 14.3 Site Remediation 220 14.4 Onshore Response Environmental Performance 221 15 Oiled Wildlife Response Plan 223 15.1 OWR Stages of Response 223 15.2 OWR Levels and Resourcing 225 15.3 Implementation Guidance 227 15.4 Oiled Wildlife Response Plan Environmental Performance 233 16 Waste Management Plan 234 16.1 Waste approvals 234 16.2 Waste Service Provider Capability 235 16.3 Waste Management Plan Environmental Performance 241 17 Scientific Monitoring Plans 243 17.1 Scope 243 17.2 Relationship to Operational Monitoring 243 17.3 Scientific Monitoring Plans 244 17.4 Baseline Monitoring 244 17.5 Monitoring Service Providers 245 17.6 Activation 246 17.7 Scientific Monitoring Plan Environmental Performance 246 18 Forward Operations Plan 248 18.1 Forward Operating Base (FOB) 248 18.2 Local facilities 248 18.3 Staging Areas 249 18.4 Wildlife Holding Facility 249 18.5 Freight Movement 249 18.6 Transport 249 18.7 Mobile Plant 249 18.8 Decontamination 249 18.9 Ablutions 249 18.10 Security 250 18.11 Messing 250 18.12 Cleaning and Repair 250 18.13 Suppliers 250 18.14 Accommodation 250 18.15 Providoring 250 18.16 PPE 251 18.17 Response Personnel Clean-up Crew 251 18.18 Radio Communications 251 Santos Ltd | EA-60-RI-00186.02 Page 7 of 291 19 Spill Response Termination 252 20 OPEP Administration 253 20.1 Document Review and Revision 253 20.2 OPEP Custodian 253 21 References 254 Santos Ltd | EA-60-RI-00186.02 Page 8 of 291 List of Appendices Appendix A: Hydrocarbon Characteristics and Behaviour 256 Appendix B: POLREP 274 Appendix C: SITREP 275 Appendix D: Vessel Surveillance Observer Log 276 Appendix E: Aerial Surveillance Observer Log 277 Appendix F: Aerial Surveillance Surface Slick Monitoring Template 278 Appendix G: Aerial Surveillance Marine Fauna Sighting Record 279 Appendix H: Aerial Surveillance Shoreline Observation Log 280 Appendix I: Shoreline Clean-up Equipment 281 Appendix J: Shoreline Response Strategy Guidance 282 Appendix K: Operational Guidelines for Shoreline Response 283 Appendix L: Oiled Wildlife Response Personnel and Equipment 284 Appendix M: Scientific Monitoring Plans 289 Appendix N: SMP Activation Process 290 Appendix O: Scientific Monitoring Capability 291 List of Figures Figure 1-1: Schematic of the Varanus Island Hub facilities 18 Figure 1-2: Location of the VI Hub facilities covered by this OPEP 19 Figure 2-1: Santos WA Incident Response Organisational Structure 25 Figure 2-2: Santos WA incident management structure for Level 2/3 marine oil pollution incident within or entering State waters 41 Figure 3-1: Potential onshore spill sources, facility and surrounding sensitivities 56 Figure 3-2: Onshore pipelines (John Brookes, East Spar, Agincourt) spill ZPI - surface 58 Figure 3-3: Onshore pipelines (Harriet Bravo, Tanker Load-out) spill ZPI - surface 59 Figure 3-4: Onshore pipelines (Diesel) spill ZPI - surface 60 Figure 3-5: Onshore pipelines spill subsurface ZPI 62 Figure 7-1: Incident Action Plan process 125 Figure 8-1: John Brookes-5 Nominal Relief Well Plan View 139 List of Tables Table 1-1: Offshore Facilities that Connect to the VI Hub 14 Table 2-1: Santos WA Oil Spill Response Levels 21 Table 2-2: Jurisdictional Authorities and Control Agencies for Varanus Island Hub oil spill response 22 Table 2-3: Roles and Responsibilities in the Crisis Support Team (CST) 26 Santos Ltd | EA-60-RI-00186.02 Page 9 of 291 Table 2-4: Roles and Responsibilities in the Incident Management Team (IMT) 27 Table 2-5: Key Field Based Roles and Responsibilities 29 Table 2-6: Santos WA Personnel Roles Embedded within the State Maritime Environmental Emergency Coordination