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4 Environmental Analysis <br /> 4.18 Wildfire <br /> safety standards. Such measures would reduce wildfire risk onsite, thereby reducing the <br /> secondary risk of runoff, post-fire slope instability, or drainage changes due to onsite fires. <br /> Other people and structures with the potential to be exposed to runoff, post-fire slope instability, <br /> or drainage changes include rural residences west, southwest, and north of the Project site. <br /> However, for the reasons previously discussed, these residences would not be exposed to <br /> significant risks, including downslope or downstream flooding or landslides, as a result of runoff, <br /> post-fire slope instability, or drainage changes. Therefore, the Project would have a less-than- <br /> significant impact with regard to the exposure of people or structures to significant risks, including <br /> downslope or downstream flooding or landslides, as a result of runoff, post-fire slope instability, <br /> or drainage changes. <br /> Mitigation: GEO-1. <br /> 4.18.5 PG&E Tesla Substation Improvements and Gen-tie <br /> To accommodate the Project, PG&E would be responsible for siting, design, and construction of <br /> the gen-tie transmission line from the point of change of ownership (POCO) to their substation. <br /> Two options are available for the gen-tie line route from this point. The first option would be to <br /> connect via an aboveground line from the POCO to a point on the west side of the southwestern <br /> boundary of the substation. The second option is to enter the substation on the southwestern <br /> edge by way of a belowground line as shown in Figure 2-1 of Chapter 2, Project Description. <br /> Either right-of-way corridor is assumed to be up to 100 feet in width. <br /> Additionally, PG&E would upgrade the Tesla Substation, and the improvements would include <br /> the installation of a grounding system, disconnect switches, surge arresters, outdoor lighting and <br /> outlets, and fiber termination for the gen-tie line. The improvements made would be within the <br /> existing Tesla Substation footprint. <br /> As a result of these substation improvements and PG&E construction of the gen-tie from the <br /> POCO to their substation, it is anticipated that there would be minimal impacts related to wildfire <br /> hazards. These improvements are not likely to impede or conflict with any emergency plans or <br /> evacuation routes, nor would the impacts exacerbate wildfire risks and the potential pollutants <br /> caused by wildfires. The improvements would not build any housing facilities and, thus, would not <br /> increase the risk of direct impacts caused by wildfires. Construction impacts would be similar to <br /> those of the battery energy storage facility and would be regulated by the same regulations as <br /> previously discussed. Operation and decommissioning impacts would also be similar to those of <br /> the battery energy storage facility, which would be less than significant. The gen-tie line is also <br /> within a relatively flat area and would not result in significant impacts related to flooding or <br /> landslides as a result of runoff, post-fire slope instability, or drainage changes. The gen-tie line <br /> and Tesla Substation improvements would also be designed, operated, and ultimately disposed <br /> of in compliance with all applicable requirements, including the CFC. Therefore, there would be <br /> no significant impacts and no mitigation would be required. <br /> 4.18.6 Cumulative Impacts <br /> The Project would not impair the ability to implement an emergency response or emergency <br /> evacuation plan. Therefore, the Project would not cause or contribute to any cumulative impacts <br /> Griffith Energy Storage Project 4.18-18 Tetra Tech/SCH 2022120675 <br /> Draft Environmental Impact Report August 2023 <br />