Los Angeles Groundwater Replenishment Project

The Los Angeles Groundwater Replenishment Project involves the installation of approximately 90 linear feet of 16-inch diameter stainless steel pipeline to reroute recycled water from the Japanese Garden Lake to the Donald C. Tillman Water Reclamation Plant (DCTWRP) intake, redirecting an average of 4 million gallons per day away from discharge into the LA River toward groundwater recharge in accordance with the previously approved Los Angeles Groundwater Replenishment Program. This reconfiguration requires new diversion structures and valves at both the lake outlet and DCTWRP intake, with construction activities scheduled over a 3-month period, involving only about 10 active working days, and the pipeline to be buried approximately 25 feet below grade. The project is subject to discretionary approval by the State Water Resources Control Board due to changes in the point of discharge, place of use, and purpose of the recycled water. All work is constrained to the DCTWRP property boundaries at 6100 Woodley Avenue, Los Angeles, CA 91406, with inspections conducted on-site and formal acceptance processed at LADWP’s administrative headquarters in downtown Los Angeles. Environmental compliance is governed by CEQA guidelines, California Fish and Game Code, and Regional Water Quality Control Board waste discharge requirements, with strict adherence to a Mitigation Monitoring and Reporting Program that includes pre-construction bird nesting surveys, prohibited work hours between 9 p.m. and 7 a.m. near residences, a Stormwater Pollution Prevention Plan, and restrictions on equipment maintenance near wetlands. A public liaison is mandated to address community concerns, particularly regarding noise, and all material handling and vegetation clearance must comply with ecological protection measures to avoid impacts on biological resources. The project is funded and administered by the Los Angeles Department of Water and Power, with environmental documentation submitted via CEQAnet and regulatory compliance overseen by LADWP, though no formal contract value, pricing structure, or federal acquisition clauses are specified in the available documentation.