CWE designed the region’s first Public Private Partnership (P3) project for stormwater purposes. This P3 project with Costco included a diversion system to capture stormwater and urban runoff from a drainage area of approximately 40 acres for the City of Culver City. The project is located on Washington Boulevard near Walnut Avenue at the City boundary. The drainage area is comprised of commercial and residential land uses completely within the City boundaries. The system captures approximately 122,000 cubic feet of stormwater runoff. Tasks included: developing project concepts for diversion and bio-filtration systems; conducting an environmental study; performing hydrologic and hydraulic analyses; coordinating with the City of Los Angeles and Los Angeles County Public Works (LACPW); topographic survey; conducting a utility search for the project site to identify existing or planned future utility conflicts along the proposed project components; preparing Plans, Specifications, and Estimates (PS&E); providing community outreach support; and construction support.