Mesmer Low Flow Diversion and Burton Way Median Green Street

Throughout Los Angeles County, municipalities are responsible for improving water quality in alignment with the Municipal Separate Storm Sewer System (MS4) Permit. Watershed Management Programs (WMPs) were developed to help guide implementation efforts over the next several decades. This presentation will focus on two constructed water quality improvement projects in the Ballona Creek Watershed that improve water quality while providing multiple benefits. The Mesmer Low Flow Diversion Project in Culver City is a regional dry-weather capture project that conveys runoff to the sewer for treatment at the Hyperion Water Reclamation Plant, which will lead to eventual reuse. The Burton Way Median Green Street in Beverly Hills includes three storm drain diversions, just under a mile of bioswales for infiltration, and a subsurface storage system that allows runoff to be used for median irrigation. The presentation will include discussion on the background (why these projects are needed), proposed improvements, water quality benefits, construction, and lessons learned.