City of Angels Water Treatment Plant Upgrade

City of Angels Water Treatment Plant Upgrade

Water treatment plant and transmission facilities improvements over a two-phase, approximately five-year period including, but not limited to: the addition of a second flocculation basin, repurposing the existing sediment basin, replacing three existing filters with two, demolishing and filling the existing clear well to accommodate a new reclaim tank and reclaim water processing equipment, installing a new water transmission line, culverting the open ditch channel providing Union Ditch water from the Angels Forebay to the property boundary and associated activities. Phase 2 includes expanding the plant’s capacity to meet the projected maximum daily demand flow for the year 2031 and includes demolishing and re-designing the sedimentation basin area to accommodate an additional flocculation basin and two new plate settler structures. Two new filter vessels will replace the existing three vessels to increase production, reduce backwash water by more than 50 percent, and allow the plant to remain online during backwashing. Additional sludge dewatering equipment and drying beds will be added to process the increased sludge volume and associated activities. A complete project description is available at City Hall.

Angels Camp

Calaveras

Northern California

California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, Central Valley Flood Protection Board, Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Drinking Water, District 5, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Department of Transportation, District 10 (DOT), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)

California Department of Transportation, District 10 (DOT), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)

Water Facilities (Type Treatment Plant, MGD 2 (1440 gpm))

Other

Aesthetics, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Recreation, Septic System, Solid Waste, Transportation, Tribal Cultural Resources, Vegetation, Wetland/Riparian, Wildfire, Wildlife