Los Angeles River and Arroyo Seco Low Flow Diversion Projects (TOS-14)
Award
Environmental Engineering Project
Description
The Department of Public Works Bureau of Engineering, Los Angeles Sanitation and Environment, and Stantec Consulting Services have designed five (5) Low Flow Diversion (LFD) systems: two (2) LFD systems to divert dry-weather flows discharging to the Arroyo Seco and three (3) LFD systems to divert dry-weather flows discharging to an area known as Reach 2 of the Los Angeles River (LA River), which runs upstream to downstream from Figueroa Street, Los Angeles to Carson Street, Long Beach. Thus, the Los Angeles River and Arroyo Seco Low Flow Diversion Projects (Project) capture dry-weather flows from the prioritized stormwater outfalls before discharge into adjacent water bodies and divert the dry-weather flows to sanitary sewers for treatment at the Hyperion Water Reclamation Plant (HWRP). Project construction consisted of installing storm drain diversions and pipelines, trash collection structures, maintenance holes, junction structures, diversion structures with weirs, pretreatment units, pump stations, pressurized pipes, valve and meter vaults, power supplies for pump stations, a supervisory control and data acquisition (SCADA) system, and instrumentation. The intent of the Project is to help improve water quality of the Los Angeles River and its tributaries (including the Arroyo Seco) by reducing the dry-weather flows, which have been identified to have high levels of bacteria. The Project consists of five (5) distinct Project sites in the City of Los Angeles and are generally categorized as being adjacent to the Arroyo Seco or Los Angeles River. These sites are located on Figueroa Street, Via Marisol, Rose Street, Mission Road and Palmetto Street.
Branch
