Rohnert Park, CA Environmental Rules: Erosion Control (2026)

52, Erosion and Sediment Control, regulates grading on public and private property to control erosion and sedimentation and protect water quality. 030, an erosion and sediment control plan prepared by a registered civil engineer or other qualified professional must be submitted with any grading permit application, detailing vegetative and mechanical erosion measures, drainage control, tree and vegetation protection, dust control, and sediment retention devices, among other required elements. An interim plan is required before each rainy season for projects under a multi-season permit, and must be submitted early enough for city review and approval before September 15, with the plan's measures in place and operational before October 15.

040 sets the design standards: grading, erosion control and sediment control practices must follow the California Stormwater Quality Association Best Management Practice Handbook, and the ordinance's general housekeeping requirements are made special provisions of every grading permit issued. Sufficient erosion and sediment control supplies must be available on site during the rainy season, October through April, to protect areas susceptible to erosion during rain events, and contractors must be prepared year-round to deploy erosion and sediment treatment controls. Soil stabilization must be completed within five days of clearing or a pause in construction, and concrete washout areas must be set up at least fifty feet from storm drain inlets.

060 require two working days' notice to the city engineering department before key milestones such as start of construction, installation of sediment controls, and completion of rough and final grading, and grading permit holders must keep their own written inspection records on site.