San Leandro, CA Environmental Rules: Erosion Control (2026)

5:1 (cut) slope, comes within 15 feet of a property line at a 2:1 grade, or strips natural vegetation from more than 5,000 square feet. Once a permit application crosses that line, Section 7-12-230 requires a civil engineer to prepare erosion control, sedimentation control, and drainage plans, subject to City Engineer approval, built to the current ABAG Manual of Standards for Erosion and Sediment Control Measures and the Handbook for Erosion and Sediment Control, and designed to keep site runoff within the water-quality limits of the City's Storm Water Management and Discharge Control Program Ordinance No.

92-011. The plans must cover two phases: interim measures such as short-term erosion-control planting, waterproof slope covering, check dams, interceptor ditches, and sediment traps to protect adjacent property, streets, and watercourses during wet-season grading, and permanent measures such as erosion-control planting, paved ditches, planted swales, rip rap, and retention basins once grading is done, on a schedule coordinated with the grading work itself. Section 7-12-235 layers on a separate pollutant control plan identifying construction pollutants like dust, fuels, pesticides, and fertilizers, and requires filing a Notice of Intent with the State Water Resources Control Board and preparing a Storm Water Pollutant Prevention Plan before the City Engineer will issue the grading permit, if state or federal law calls for an NOI.

Violating any part of Chapter 7-12, including a missing or unapproved erosion control plan, is an infraction under Section 7-12-900, and "each day the violation occurs shall be considered a separate offense," enforceable by any City officer or employee authorized to issue citations.