Sun Valley Watershed Management Plan

The Sun Valley Watershed Management Plan encompasses two major infrastructure projects—the Park Project and the Drain Project—designed to manage stormwater runoff, reduce flooding, and enhance environmental and community resilience in the Sun Valley area of Los Angeles County. The Park Project transforms a 46-acre inactive construction debris landfill into a multi-use wetlands park featuring a 21-acre detention pond, 10 acres of constructed wetlands, and 15 acres of recreational space, delivering flood control, habitat restoration, and public access benefits. The Drain Project involves installing approximately 28,200 linear feet of storm drain lines, catch basins, and associated drainage structures beneath existing roads in Sun Valley across Phases 2 through 4 to improve stormwater conveyance. Both projects were originally evaluated in the 2004 Program Environmental Impact Report (PEIR), certified by the Los Angeles County Board of Supervisors, and subsequently reviewed through 2013 and 2020 Addenda, which confirmed that proposed updates do not constitute substantial changes or introduce new significant environmental impacts under the California Environmental Quality Act (CEQA) Guidelines Section 15162. Environmental compliance remains central to the project’s execution, with oversight guided by CEQA requirements, mitigation measures adopted as conditions of approval, and monitoring protocols established for ongoing compliance. Administrative and project leadership are managed by the Los Angeles County Flood Control District through the Department of Public Works, with key contacts including the Assistant Deputy Director and Senior Civil Engineer responsible for coordination and oversight. Performance is localized to the Sun Valley community within ZIP code 91352, with final acceptance and documentation handled by the County’s Watershed Management Division in Alhambra and filed with the County Clerk in Norwalk. No federal contract clauses, pricing data, or formal solicitation terms are present; the effort operates under state environmental planning and administrative authority, with funding and execution derived from local agency resources and compliance-driven fees, not federal procurement mechanisms.