Rocklin, CA Environmental Rules: Erosion Control (2026)

Section 15.28.230 of the Rocklin Municipal Code, part of the Grading and Erosion chapter's Article IV, requires every grading approval to carry an erosion and sediment control (ESC) plan. The plan must list the protective measures used during construction, the permanent revegetation method planned once grading finishes, and the sequence and timing of grading against revegetation work. Cut and fill faces need erosion protection installed before the city engineer will sign off on final approval, unless the applicant demonstrates the material itself resists erosion. Revegetation must start within twelve months of reaching final grade, disturbed surfaces must be prepared for revegetation within fourteen days of finishing grading or vegetation removal, and topsoil stripped for construction has to be stockpiled away from drainage structures and tree root systems for later reuse on cut and fill embankments.

Temporary sedimentation controls go in with the initial grading and stay through construction; permanent sediment catchment basins are required wherever needed to keep sediment out of state waters and must follow a regular inspection and cleaning schedule. Projects with construction between October 15 and April 15 must also file a winterization certification with the city engineer by September 15 under Section 15.28.270, or the grading approval is suspended until one is filed. The permittee remains responsible for maintaining slope vegetation until it is established, per Section 15.28.230(C)(10), and for preventing any sediment discharge above pre-grading levels under Section 15.28.260(D).