Santa Anita Sediment Removal Project

Santa Anita Sediment Removal Project

The proposed project consists of draining the Santa Anita Reservoir, removing sediment and debris from the reservoir by dry excavation, transporting the sediment from the reservoir (via conveyor belt and truck), and placing it in an existing sediment placement site. The sediment transport route extends approximately 1.5 miles from the reservoir on the north to the sediment placement site on the south. The proposed project also includes improvements to the Santa Anita Dam, which would involve modifications to the dam's inlet/outlet works, including the construction of a new riser. Sediment removal activities are anticipated to occur over two years from April through December of 2009 and 2010 (weather permitting). The removal of native vegetation in the sediment placement site is anticipated to occur during after September 2008 and prior to March 2009. The riser construction would likely occur from May to December 2009. Dewatering of the reservoir would occur before the riser construction and would last for approximately two weeks. The dry-out of the reservoir would start at the end of the dewatering cycle, which is anticipated to last up to three weeks, depending on the magnitude of recession flows and the weather.

Arcadia

Los Angeles

California Department of Conservation (DOC), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 7 (DOT), California Highway Patrol, California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), California State Lands Commission (SLC), Central Valley Flood Protection Board, Office of Historic Preservation, Resources Agency, San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy (RMC), State Water Resources Control Board, Division of Water Rights, California Native American Heritage Commission (NAHC), Department of Water Resources

California Native American Heritage Commission (NAHC), Department of Water Resources

Other (Sediment Removal)

Sediment Removal

Aesthetics, Agriculture and Forestry Resources, Air Quality, Cultural Resources, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Sewer Capacity, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildfire, Wildlife