Enbridge Gas Transmission Emergency Response Plan Core Plan 3/2021 Plan — Company: Enbridge Gas Transmission and Midstream Owned by: Emergency Management Controlled Location: GTM Governance Documents Library Published Location: GTM Governance Documents Library Printed Hard Copy For Reference Only Please Refer To: Emergency Management For Up to Date Version Enbridge Gas Transmission Emergency Response Plan Table of Contents I-1 Introduction ......................................................................................................................................................... 1 I-1.1 Purpose ......................................................................................................................................................... 1 I-1.2 Plan Coverage .............................................................................................................................................. 1 I-1.3 Plan Scope .................................................................................................................................................... 3 I-1.4 Plan Implementation .................................................................................................................................... 3 I-2 Regulatory Compliance ...................................................................................................................................... 4 I-2.1 Applicable Regulations ............................................................................................................................... 4 I-2.2 Regulatory Formatting ................................................................................................................................. 4 I-2.3 Agency Approval .......................................................................................................................................... 4 I-3 Plan Review and Update Procedures ................................................................................................................ 5 I-4 Reference Documents ........................................................................................................................................ 5 I-5 Glossary/Acronyms ............................................................................................................................................ 6 II-1 Detection of a Release ...................................................................................................................................... 13 II- 1.1 Facility Release Mitigation ........................................................................................................................ 13 II -1.2 Pipeline Monitoring .................................................................................................................................... 13 II-2 Incident Response ............................................................................................................................................ 14 II-2.1 Emergency Classification and Tiered Response ......................................................................................... 14 II-2.1.1 Assessment of Emergency ........................................................................................................... 14 II-2.1.2 Events Requiring Immediate Response ..................................................................................... 15 II-2.1.3 Emergency Classification and Tiered Response........................................................................ 16 II- 2.2 Initial Incident Commander ....................................................................................................................... 17 II- 2.3 Personal Protective Equipment (PPE) ..................................................................................................... 17 II-2.4 Detection and Initiation of Response ....................................................................................................... 17 II-2.4.1 Response Initiation Flowchart...................................................................................................... 18 II-2.4.2 Field Personnel .............................................................................................................................. 19 II-2.4.3 Gas Control .................................................................................................................................... 19 II-2.4.4 Technician / First Responder ....................................................................................................... 19 II-2.4.5 Area Supervisor ............................................................................................................................. 19 Revised 3/2021 | D/V#.# | © Enbridge Gas Transmission and Midstream | Plan INTERNAL INFORMATION – Uncontrolled Copy if Printed or Downloaded. Enbridge Gas Transmission Emergency Response Plan II- 2.5 Confirmed Incident .................................................................................................................................... 20 II-2.5.1 Technician / First Responder ....................................................................................................... 20 II-2.5.2 Gas Control .................................................................................................................................... 20 II-2.5.3 Area Supervisor ............................................................................................................................. 20 II-2.5.4 Crisis Management Team/Executive Management Team .......................................................... 21 II-2.5.5 Public Relations Activation .......................................................................................................... 21 II-2.6 Significant Event Criteria .......................................................................................................................... 21 II-2.7 Specific Incident Type Response Procedures ........................................................................................ 22 II-2.7.1 Product Release ............................................................................................................................. 22 II-2.7.2 Medical Emergency ....................................................................................................................... 24 II-2.7.3 Release Near or Inside a Building ................................................................................................ 24 II-2.7.4 Fire .................................................................................................................................................. 25 II-2.7.5 Severe Weather .............................................................................................................................. 26 II-2.7.6 Earthquake ..................................................................................................................................... 27 II-2.7.7 Community Evacuation ................................................................................................................. 28 II-2.7.8 Emergency Shutdown and Return to Service ............................................................................. 28 II-3 Notification Procedures .................................................................................................................................... 29 II- 3.1 Communication Methods .......................................................................................................................... 29 II-3.2 Initial Notifications ..................................................................................................................................... 29 II-3.3 Follow-up Notifications ............................................................................................................................ 29 II-4 Response Management System ...................................................................................................................... 30 II-4.1 Incident Command System Structure ...................................................................................................... 30 II -4.2 Company Response Teams Organization – E3RT .................................................................................. 30 II-4.2.1 Business Unit Incident Support and Regional Incident Management Team ........................... 32 II-4.2.2 Region Incident Management Team ............................................................................................ 33 II-4.3 Incident Management Team Activation .................................................................................................... 34 II -4.4 Emergency Operations Center ................................................................................................................. 34 II-4.5 ICS Planning Cycle .................................................................................................................................... 35 II-4.5.1 Initial Response ............................................................................................................................. 35 Revised 3/2021 | D/V#.# | © Enbridge Gas Transmission and Midstream | Plan INTERNAL INFORMATION – Uncontrolled Copy if Printed or Downloaded. Enbridge Gas Transmission Emergency Response Plan II-4.5.2 Response Transition ....................................................................................................................