Castro Valley General Plan land use designation "Resource Management"; Alameda County zoning Agricultural. and consistent with Alameda County zoning "Conditional Uses," public utility uses.
The Project purpose is to improve the efficiency of EBMUD’s current trench soil management practices, reduce operational costs, and restore the former rock quarry. Site restoration would allow for the beneficial reuse of EBMUD trench soils by restoring environmentally sustainable native habitat and offering passive recreational uses with potential connections to existing public trails. EBMUD proactively replaces its water distribution system pipelines to improve water service, reduce water loss and the number of pipeline breaks. EBMUD excavates trench soils during pipeline repair and maintenance activities (mostly due to pipeline replacement and repair activities). Trench soils are currently transported to temporary stockpile sites for subsequent disposal at landfills. EBMUD estimates that it will generate approximately 50 percent more trench soils due to a planned increase in pipeline replacement rates. The Quarry Site would be used by EBMUD as a final location for trench soils with no interim stockpiling and subsequent transport to a landfill.
The Project requires EBMUD’s acquisition of the privately-owned property and restoration of the Quarry Site in stages over time. The first stage includes using trench soils for fill operations for long-term phased placement and stabilization of approximately 3.6 million cubic yards of trench soil at the Quarry Site over approximately 40 to 80 years. The pace of fill operations would depend on the pipeline repair and replacement rates and the number of trucks per day (or volume in cubic yards per year) of trench soils generated throughout EBMUD’s service area and transported to the Quarry Site. Trucks would access the Quarry Site from Lake Chabot Road. During fill operations, EBMUD would also use an area of the Quarry Site for temporary stockpiles of trench backfill materials and another area for the mechanical separation of the trench soil/water mixture generated during pipeline repair projects. The fill operations stage would be followed by the site restoration stage which would include planting of native trees and hydroseeding with native wildflower and grass species, followed by grading and installation of a public recreational trail. The final stage of the Project is the long-term use of the restored site for open space and passive recreation. Figure 3 shows a conceptual site restoration design. The restored site would be managed as public park land and/or open space, benefitting wildlife and providing open space and a recreational trail for communities in EBMUD’s service area.
Citywide, Northern California, San Francisco Bay Area
Lake Chabot Road
79-100-1-1/ -2; 79-100-2-1/ -2
580 & 880
San Leandro Creek
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), 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 Resources Recycling and Recovery, California Department of Transportation, District 4 (DOT), California Department of Water Resources (DWR), 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, San Francisco Bay Region 2 (RWQCB), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, California Native American Heritage Commission (NAHC)
State Reviewing Agency Comments
California Native American Heritage Commission (NAHC)
Recreational (Recreational uses with potential connections to public trails. )
Aesthetics, Air Quality, Biological Resources, Cultural Resources, Energy, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Wildfire
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