Culvert 10 Repairs at Vandenberg Space Force Base, California

Culvert 10 Repairs at Vandenberg Space Force Base, California

Coast Road on Vandenberg Space Force Base (VSFB) crosses multiple named and unnamed drainage features, including an unnamed erosional channel that drains stormwater discharges through Culvert 10. Severe stormwater flows have damaged Culvert 10, which could lead to the collapse of Coast Road. Culvert 10 provides proper stormwater drainage beneath Coast Road. Coast Road provides the only access to critical infrastructure on South VSFB that supports space and missile launch activities as an access route for the delivery of assets to mission critical launch sites. The Proposed Action consists of the necessary repairs to Culvert 10 to ensure it functions adequately to move stormwater discharges beneath Coast Road. Space Launch Delta (SLD) 30 would repair Culvert 10 in its current alignment beneath Coast Road. Additionally, SLD 30 would install stormwater flow dissipation at the outfall of Culvert 10 to decrease water flow velocities and associated downstream erosion. SLD 30 would construct a temporary access road to Culvert 10 for all repair activities. This would involve the use of a combination of temporary and existing staging, equipment parking, and laydown yards for the Culvert 10 repairs. It is anticipated that 10 feet from the centerline of the culvert and 50 feet from the end of the culvert would be impacted by the culvert repair efforts. Following the completion of Culvert 10 repair activities, SLD 30 would restore all temporarily disturbed areas.

Lompoc, Vandenberg SFB

Santa Barbara

Southern California

California Air Resources Board (ARB), California Coastal Commission (CCC), California Department of Fish and Wildlife, Marin Region 7 (CDFW), 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 Toxic Substances Control (DTSC), California Department of Transportation, District 5 (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 Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Central Coast Region 3 (RWQCB), California State Lands Commission (SLC), Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality

Transportation:Local Road (Culvert repair beneath Coast Road on Vandenberg Space Force Base)

Culvert repair on federal lands, federal action

Air Quality, Biological Resources, Coastal Zone, Cultural Resources, Cumulative Effects, Drainage/Absorption, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise, Solid Waste, Transportation, Tribal Cultural Resources, Vegetation