El Monte, CA Environmental Rules: Erosion Control (2026)

050, its terms supersede any conflicting permit provision, and the application must include plans and specifications stamped by a registered civil engineer. The code favors vegetation-based prevention, directing developers to retain natural vegetation wherever possible and to install temporary vegetation or mulching promptly if it must be removed, and requires erosion control elements to be in place no later than 60 days after grading stops, whichever comes first. Developers must also plan for increased stormwater runoff after development, including sediment basins, debris basins, desilting basins or silt traps to cut sediment from runoff.

A security deposit tied to the current Public Works-Engineering Division fee schedule guarantees compliance with the permit; temporary and portable measures such as sandbags and Visqueen sheeting can be stored on site during dry weather, but any measures shown on the approved plan must be deployed for every storm event. S. Weather Service storm prediction, or if sediment collects in the public right-of-way and isn't cleaned up within 24 hours of the storm ending, the City Engineer can issue a stop-work notice until the erosion controls and stormwater pollution prevention plan are fully implemented.