Livermore, CA Environmental Rules: Erosion Control (2026)

45), targets sediment and debris generated by active construction. Every contractor performing work in the City must place filter materials at the catch basin serving the site to keep debris and dirt out of the municipal storm sewer system defined in Sec. 020 as the network of roads, curbs, gutters, ditches, channels and storm drains that is not part of a treatment works. Beyond the catch-basin filter requirement, the city engineer and the water resources manager have standing authority to set additional controls on the volume and rate of stormwater runoff from new developments and redevelopments, sized to minimize the discharge and transport of pollutants leaving the site.

This construction-phase duty sits inside the chapter's broader scheme: Sec. 060 separately requires anyone whose activity may send pollutants into the storm sewer to take all practicable measures to reduce them, and Sec. 120 requires anyone with a watercourse on their property to keep it free of the trash, debris and excess vegetation that erosion can dislodge, and bars grading or other development within a watercourse setback without a written permit from the water resources manager. Authorized enforcement officials, defined in Sec. 020 as the Public Works Director, the water resources division manager, the source control coordinator and source control inspectors, may inspect a job site under Sec. 130 to confirm filter materials and runoff controls are in place, entering with consent or, if refused, a search warrant.