Collinsville 500/230 Kilovolt Substation Project

Collinsville 500/230 Kilovolt Substation Project

LS Power Grid California, LLC (LSPGC) filed an application for a Certificate of Public Convenience and Necessity (CPCN) (Application No. A.24-07-018) with the California Public Utilities Commission (CPUC) for the Collinsville 500/230 Kilovolt (kV) Substation Project, referred to as the Proposed Project. The CPUC, pursuant to the California Environmental Quality Act (CEQA), will prepare an Environmental Impact Report (EIR) to analyze environmental effects that would result from the Proposed Project if LSPGC’s application is approved. The California Independent System Operators (CAISO) 2021-2022 Transmission Plan identified the Proposed Project as a needed upgrade to the California electric grid. The main components of the Proposed Project include: - Constructing a new 500/230 kV substation (“Collinsville Substation”). The proposed substation site is located adjacent to Stratton Lane approximately 0.8-mile northeast of the unincorporated community of Collinsville. - Constructing two self-supporting segments of new 500 kV conductor and structures roughly parallel along the approximately 1.2-mile interconnection route (or “loop”) between the proposed LSPGC Collinsville Substation and Pacific Gas and Electric Company’s (PG&E) existing Vaca Dixon-Tesla 500 kV Transmission Line, resulting in the addition of approximately 2.4 miles of new 500 kV transmission lines. - Constructing a new approximately 6-mile-long, double-circuit 230 kV transmission line that would connect the proposed LSPGC Collinsville Substation to PG&E’s existing Pittsburg Substation, with approximately 4.5 miles of submarine cables running beneath the Sacramento-San Joaquin River Delta waterways. The submarine cables would be buried to a depth of approximately 6 to 15 feet below the sediment surface between an in-river transition structure just off the northern shore of the Sacramento River and an underground utility vault on the southern shore of the Sacramento River near the Pittsburg Substation. - Extending and connecting an existing PG&E 12 kV distribution line to the proposed substation (approximately 0.9 mile long and parallel to Stratton Lane). - Constructing new telecommunications paths collocated with the new transmission lines, a new microwave tower immediately adjacent to the proposed substation, and a new fiber optic path between existing fiber in the City of Pittsburg and the proposed Collinsville Substation (approximately 1.2 miles). - Modifying PG&E’s existing Pittsburg, Vaca Dixon, and Tesla substations to support the proposed substation interconnection. All PG&E substation modifications would occur within the existing substation footprints. The proposed substation and 230 kV transmission line would be constructed by LSPGC. PG&E would construct the 500 kV transmission interconnection, 12 kV distribution line, and microwave tower, and modify their existing substations. Construction is proposed to begin in early 2026 and would take approximately 24 months to complete. The project’s proposed in-service date is June 1, 2028, per the CAISO’s technical specifications. Proposed substation, 230 and 500 kV transmission lines, 12 kV distribution line, communication equipment, and associated infrastructure. Refer to NOP for additional details. Additional information about the Proposed Project and CEQA review process is available on the CPUC’s website: https://ia.cpuc.ca.gov/environment/info/panoramaenv/collinsville/index.html

Pittsburg, Suisun City, Unincorporated Areas; Collinsville, Vacaville

Alameda, Contra Costa, Sacramento, Solano

San Francisco Bay Area

California Air Resources Board (ARB), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 4 (DOT), California Department of Water Resources (DWR), California Energy Commission, California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California San Joaquin River Conservancy (SJRC), California State Lands Commission (SLC), Central Valley Flood Protection Board, Delta Protection Commission, Delta Stewardship Council, Office of Historic Preservation, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, California Native American Heritage Commission (NAHC)

California Native American Heritage Commission (NAHC)

Power (Substation, Transmission, and Distribution Infrastructure)(Megawatts 0.001)

Scoping Review

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Coastal Zone, Cultural Resources, Cumulative Effects, Drainage/Absorption, Economics/Jobs, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire