Valley Generating Station Demolition Project (Units 1-4 and Associated Structures)

Valley Generating Station Demolition Project (Units 1-4 and Associated Structures)

This document consists of both the Initial Study for the project and the MND. The Initial Study determined that the implementation of the proposed project could cause some potentially significant impacts on the environment but, as shown in the environmental analysis contained in this Initial Study/Mitigated Negative Declaration (IS/MND), all of the project’s potentially significant impacts would be reduced to less than significant levels through the implementation of mitigation measures. Consequently, the analysis contained herein concludes that an MND shall be prepared for the proposed project. The Los Angeles Department of Water and Power (LADWP) proposes to demolish Units 1–4 and associated structures and systems, the bearing cooling tower foundation, skim pond, and four concrete foundations of demolished cooling towers within the Valley Generating Station (VGS) (project or proposed project). The associated structures and systems adjacent to Units 1–4 that would also be demolished include the external connected turbine deck, circulating water piping connections, the oil water separator, the Fifth Street pipe trench, and the weld shop. The A/B Basins would remain in service, and the reverse osmosis (RO) trailer would not be demolished but would be removed from its current location. Units 1–4 were decommissioned in 2002, and the four cooling towers were demolished in 2017.

Los Angeles

Los Angeles

Southern California

Other (Utility Demolition Project)

Other

Biological Resources, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Tribal Cultural Resources

California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Resources Recycling and Recovery, California Department of Transportation, District 7 (DOT), California Department of Transportation, Division of Aeronautics (DOT), California Department of Transportation, Division of Transportation Planning (DOT), California Department of Water Resources (DWR), California Energy Commission, California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy (RMC), State Water Resources Control Board, Division of Water Quality