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4 Environmental Analysis 4.18 Wildfire submit an annual report of its inspections for the previous year under penalty of perjury (CPUC 2017a). General Order 166 General Order 166 Standard 1.E requires IOUs to develop a Fire Prevention Plan, which describes measures that the utility will implement to mitigate the threat of powerline fires generally. Additionally, this standard requires that IOUs outline a plan to mitigate powerline fires when wind conditions exceed the structural design standards of the line during a Red Flag Warning2 in a high fire threat area. Fire Prevention Plans created by IOUs are required to identify specific parts of the utility's service territory where the conditions described above may occur simultaneously. Standard 1 also requires that utilities prepare an emergency response plan. PG&E's Emergency Response Plan, prepared in compliance with Standard 1, is described below. Standard 11 requires that utilities report annually to the CPUC regarding compliance with General Order 166 (CPUC 2017b). PG&E Company Emergency Response Plan PG&E's Company Emergency Response Plan describes and formalizes PG&E's in-place plans and protocols for response to emergencies. The plan identifies potential hazards, available resources to respond to emergencies, internal communication protocols, and operational structure. Additionally, PG&E's Wildfire Safety Operations Center operates 24 hours per day during wildfire season (PG&E 2019). PG&E Wildfire Mitigation Plan Pursuant to Senate Bill (SB) 901 and SB 1028, PG&E submitted its 2022 Wildfire Mitigation Plan (WMP) to the California Office of Energy Infrastructure Safety (OEIS or Energy Safety) on February 25, 2022. The WMP describes PG&E's approach to mitigate wildfire risk and is characterized by undergrounding powerlines to harden the system, expanding its Enhanced Powerline Safety Settings (EPSS)to all risk areas, applying new mitigation technology, continuing aggressive vegetation management, performing enhanced risk inspections and risk modeling, utilizing cameras and weather stations to improve situational awareness, and utilizing Public Safety Power Shutoffs (PSPS) as a final safety action. The "over-arching objective of the [plan] is to is to reduce the risk and consequences of wildfires associated with utility electrical equipment, thereby avoiding catastrophic wildfires across central and northern California" (PG&E 2022). Senate Bill 1028 SB 1028 (2016) requires each electrical corporation to construct, maintain, and operate its electrical lines and equipment in a manner that will minimize the risk of catastrophic wildfire posed by those electrical lines and equipment, and makes a violation of these provisions by an electrical corporation a crime under state law. The bill also requires each electrical corporation to annually prepare a WMP and submit to the CPUC for review. The plan must include a statement of objectives, a description of preventive strategies and programs that are focused on minimizing 2 A "Red Flag Warning" is issued by the National Weather Service to alert fire departments of the onset, or possible onset, of critical weather and dry conditions that could lead to rapid or dramatic increases in wildfire activity. Griffith Energy Storage Project 4.18-8 Tetra Tech/SCH 2022120675 Draft Environmental Impact Report August 2023