Pacific Gas and Electric Company Amended 2019 Wildfire Safety Plan

Pacific Gas and Electric Company Amended 2019 Wildfire Safety Plan

Pacific Gas and Electric Company Amended 2019 Wildfire Safety Plan February 6, 2019 TABLE OF CONTENTS 1. Introduction and Objectives of Plan .......................................................................... 1 1.1. Executive Summary ................................................................................................. 1 1.2. Plan Overview and Objectives ................................................................................. 6 2. Program Overview and Climate Change Risk and Strategy ................................... 12 2.1. Overview of Strategies and Programs .................................................................... 12 2.2. Climate Change Risks ............................................................................................ 17 3. Risk Analysis and Drivers ...................................................................................... 19 3.1. Methodology for Identifying and Evaluating Risk.................................................... 20 3.2. List of Wildfire Risks and Drivers............................................................................ 22 3.2.1. Risks and Drivers Identified in RAMP ............................................................. 22 3.2.2. Risks and Drivers Identified After RAMP ........................................................ 22 3.2.3. Risks and Drivers Associated With Design, Construction, Operations and Maintenance ................................................................................................... 29 3.2.4. Topographic and Climatological Risks ............................................................ 29 3.3. How PG&E’s Plan Accounts for Wildfire Risks ....................................................... 31 3.4. Evaluation of Higher Risk Threat Areas ................................................................. 32 3.5. Circuit Prioritization Based on Asset Wildfire Risk ................................................. 32 3.6. Wildfire Evacuation Study ...................................................................................... 34 3.7. Use of Probabilistic Risk Assessments .................................................................. 35 4. Wildfire Reduction Strategy and Programs ............................................................ 35 4.1. Operational Practices ............................................................................................. 46 4.1.1. Recloser Operations ....................................................................................... 47 4.1.2. Personnel Work Procedures in Conditions of Elevated Fire Risk ................... 49 4.1.3. Safety and Infrastructure Protection Teams ................................................... 50 4.1.4. Aviation Resources ......................................................................................... 51 4.2. Wildfire Safety Inspection Programs ...................................................................... 52 4.2.1. WSIP Distribution ........................................................................................... 55 4.2.2. WSIP Transmission ........................................................................................ 56 4.2.3. WSIP Substation ............................................................................................ 59 4.3. System Hardening Overview .................................................................................. 60 4.3.1. Pole Material .................................................................................................. 64 4.3.2. Pole Loading and Replacement ..................................................................... 65 i 4.3.3. Conductor ....................................................................................................... 66 4.3.4. System Protection .......................................................................................... 67 4.3.5. Equipment ...................................................................................................... 69 4.4. Enhanced Vegetation Management ....................................................................... 70 4.4.1. Vegetation Trimming and Overhanging Tree Limbs ....................................... 73 4.4.2. High Fire-Threat District VM Inspection Strategy............................................ 76 4.4.3. Inspecting Trees With a Potential Strike Path to Power Lines ........................ 78 4.4.4. At-Risk Species Management ........................................................................ 79 4.4.5. Challenges Associated With Enhanced Vegetation Management .................. 80 4.4.6. Community and Environmental Impacts ......................................................... 85 4.5. Enhanced Situational Awareness and Known Local Conditions ............................ 86 4.5.1. Meteorological Operations and Advanced Situational Awareness ................. 88 4.5.2. Fire Spread Modeling ..................................................................................... 90 4.5.3. Weather Stations ............................................................................................ 90 4.5.4. Camera Deployment Strategy ........................................................................ 91 4.5.5. Satellite Fire Detection System....................................................................... 92 4.5.6. Storm Outage Prediction Model...................................................................... 92 4.5.7. Wildfire Safety Operations Center .................................................................. 93 4.6. Public Safety Power Shutoff Program .................................................................... 94 4.6.1. PSPS Decision Factors .................................................................................. 97 4.6.2. Strategies to Enhance PSPS Efficiency While Reducing Associated Impacts 98 4.6.2.1. Impact Mitigation Through System Sectionalizing .......................................... 98 4.6.2.2. Resilience Zones ............................................................................................ 99 4.6.2.3. Customer Services and Programs ................................................................ 100 4.6.3. PSPS Notification Strategies ........................................................................ 105 4.6.3.1. Customer and Community Outreach ............................................................ 106 4.6.3.2. Mitigating PSPS Impacts on First Responders, Health Care Facilities, Telecommunications, and Water Utilities ...................................................... 108 4.6.4. Re-Energization Strategy ............................................................................. 109 4.7. Alternative Technologies ...................................................................................... 109 4.7.1. Rapid Earth Fault Current Limiter Pilot Project ............................................. 111 4.7.2. Enhanced Wires Down Detection Project ..................................................... 111 4.7.3. Other Alternative Technologies .................................................................... 111 4.8. Post-Incident Recovery, Restoration and Remediation Activities ......................... 113 4.8.1. Post-Incident Recovery ................................................................................ 113 ii 4.8.2. Restoration ................................................................................................... 114 4.8.3. Remediation ................................................................................................. 114 4.8.3.1. Environmental Remediation – Debris Flow Modeling ................................... 115 5. Emergency Preparedness and Response ............................................................ 117 5.1. PG&E Company Emergency Response Plan ...................................................... 117 5.1.1. The Plan’s Alignment With CERP................................................................. 118 5.1.2. Plans to Prepare for and Restore Service .................................................... 118 5.1.3. Emergency Communications ........................................................................ 120 5.1.3.1. Public Outreach Before Potential Wildfires ................................................... 121 5.1.3.2. Public Outreach During Wildfires .................................................................. 122 5.1.3.3. Public Outreach After Wildfires ..................................................................... 122 5.1.4. Ensuring Adequate Workforce to Restore Service ....................................... 123 5.2. Customer Support in Emergencies ...................................................................... 125 5.2.1. Outage Reporting ......................................................................................... 125 5.2.2. Support for Low Income Customers ............................................................. 125 5.2.3. Billing Adjustments ....................................................................................... 127 5.2.4. Extended Payment Plans ............................................................................. 128 5.2.5. Suspension of Disconnection and Nonpayment Fees and Deposit Waivers 128 5.2.6. Repair Processing and Timing ..................................................................... 128 5.2.7. Access to Utility Representatives ................................................................

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