Los Angeles Groundwater Replenishment Project

Los Angeles Groundwater Replenishment Project

The modified Proposed Project consists of the installation of approximately 90 linear feet of buried 16-inch diameter stainless steel pipeline. This would link the existing outlet pipeline of the Japanese Garden Lake to the existing intake pipeline that routes wastewater to the DCTWRP headworks facility from the Additional Valley Outfall Relief Sewer. New diversion structures and valves would be installed at the outlet and on the DCTWRP wastewater intake pipeline to allow for the diversion of water from the Japanese Garden Lake to the DCTWRP, for eventual recharge to groundwater or other recycled water use consistent with the previously-approved LAGWR. The new pipeline would be buried approximately 25 feet below grade and would require excavation along its alignment. Installation of the pipeline and valves would take approximately 10 active working days to complete and would occur intermittently over a period of up to 3 months. As a result of the project modifications, there would be a decrease in flow of recycled water to the LA River. This change in the point of discharge, place of use, and purpose of use of recycled water from DCTWRP would result in an average decrease in flow of approximately 4 million gallons a day (MGD) to the LA River downstream of the Japanese Garden discharge point and is subject to the discretionary approval by the State Water Resources Control Board (SWRCB).

Los Angeles

Los Angeles

Citywide

California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Marin Region 7 (CDFW), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Department of Pesticide Regulation (DPR), California Department of Resources Recycling and Recovery, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 7 (DOT), California Department of Transportation, Division of Aeronautics (DOT), California Department of Transportation, Division of Transportation Planning (DOT), California Department of Water Resources (DWR), California Energy Commission, California Fish and Game Commission (CDFGC), 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, Los Angeles Region 4 (RWQCB), California Santa Monica Mountains Conservancy (SMMC), California State Coastal Conservancy (SCC), California State Lands Commission (SLC), Colorado River Board, Office of Historic Preservation, Santa Monica Bay Restoration, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Drinking Water, District 15, State Water Resources Control Board, Division of Drinking Water, District 16, State Water Resources Control Board, Division of Drinking Water, District 22, State Water Resources Control Board, Division of Drinking Water, District 7, 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, University of California Natural Reserve System (UCNRS)

Water Facilities (Pipeline Installation)(Type Reclamation Plan, MGD 4)

Board Approval

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Energy, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation, Vegetation, Wetland/Riparian