Delta Diablo Secondary Process Improvements

Delta Diablo Secondary Process Improvements

The Project would include a new secondary clarifier, new aeration basin, new 42-inch air header, new return activated sludge pump station, improvements to the primary influent pump station and blower building, secondary clarifier splitter box, and pipelines. All construction activity would be conducted within the existing treatment plant boundary; a vacant parcel owned by the District near the entrance to the WWTP would be used for staging, stockpiling of materials, and construction office trailers and parking. The District intends to construct these facilities as a single project, however given the uncertainty with project costs, may elect to construct the facilities in phases.

Antioch, Bay Point (Unincorporated), Pittsburg

Contra Costa

Citywide

California Air Resources Board (ARB), California Coastal Commission (CCC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Fish and Wildlife, North Central Region 2 (CDFW), 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 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, Central Valley Sacramento Region 5 (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, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Drinking Water, District 4, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Divison of Financial Assistance

Waste Treatment:Sewer (Improvements to secondary processes within existing facility.)(MGD 19.5)

Wastewater Treatment Improvements

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Energy, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Wildfire