Flume 45 Critical Water System Infrastructure Project

Flume 45 Critical Water System Infrastructure Project

The proposed Project would remove approximately 1,120 linear feet of an existing water conveyance structure (flume) constructed out of wood, which is highly susceptible to damage from wildfire and other natural hazards, and replace it with a more durable ignition resistant concrete conveyance structure (i.e., U shaped concrete canal). The Project would include mobilization, access improvements and site preparation, demolition and disposal of the existing wood structure, clearing and grubbing vegetation within the work area, excavation and slope stabilization, construction of a new canal bench using mechanically stabilized earth (MSE) walls, and construction of a U-shaped concrete canal. The Project would also incorporate nature-based solutions with the use of bioengineered natural and manmade materials to stabilize disturbed areas within the Project footprint. This water conveyance infrastructure (Flume 45) is part of EID’s El Dorado Federal Energy Regulatory Commission Project 184, which consists of a series of dams, canals, flumes, siphons, a penstock, and a powerhouse to deliver water from the South Fork of the American River for drinking water and power generation.

El Dorado

Countywide

California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Habitat Conservation Planning (CDFW), 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 State Parks, Division of Boating and Waterways, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 3 (DOT), California Department of Water Resources (DWR), California Energy Commission, California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Natural Resources Agency, California Public Utilities Commission (CPUC), California State Lands Commission (SLC), Central Valley Flood Protection Board, Delta Protection Commission, Delta Stewardship Council, Office of Historic Preservation, Sierra Nevada Conservancy, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Drinking Water, District 9, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)

California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)

Other (Water Conveyance - Flume Replacement)

Water Conveyance

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire