DATE:
June 10, 2026
04
TO:
Board of Supervisors
SUBJECT
Title
ADVERTISE AND AWARD A CONSTRUCTION CONTRACT FOR WOODSIDE WATER QUALITY BASIN MODIFICATIONS & TRASH CAPTURE PROJECT AND RELATED CEQA EXEMPTION (DISTRICT: 2)
Body
OVERVIEW
The State of California regulates stormwater pollution at the local level through a Regional Municipal Separate Storm Sewer System (MS4) Permit and Trash Amendments set by the Water Resources Control Board. These regulations require local agencies to control the discharge of bacteria, trash, and other pollutants. To meet these requirements, the Department of Public Works (DPW) developed a green infrastructure capital program to improve local water quality. The Woodside Water Quality Basin Modifications & Trash Capture Project (Project) was specifically designed to advance the County of San Diego's (County) regulatory compliance goals to improve water quality in local waterbodies and downstream receiving waters - in this case, within the San Diego River watershed. This Project was developed to optimize both the amount of stormwater that will be delivered to an existing flood control basin, as well as the treatment it will receive once there, supporting the County's stormwater compliance efforts.
The Project is located within the County's Woodside flood control basin property on the south side of Woodside Avenue in the community of Lakeside, between Winter Gardens Boulevard and Riverview Avenue. It incorporates structural best management practices (BMPs) that are designed to improve water quality during both wet and dry weather periods. Proposed BMPs include modifications to flood control basin structures to divert additional stormwater runoff during low flow periods into the existing basin for treatment while maintaining adequate capacity during storm events. In addition, a full capture trash screen that meets California's requirements will be retrofitted onto the existing trash racks. The combination of these BMPs will ...
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