Dublin, CA Environmental Rules: Erosion Control (2026)

580 sets nine standing requirements for grading operations: plans must treat long-term erosion and sediment control as a primary design consideration; no grading may occur during the rainy season unless the applicant demonstrates to the Director of Public Works that no stage of work poses a substantial risk of increased sediment discharge; if rainy-season grading is allowed, the smallest practicable area of erodible land must be exposed and exposure time minimized; natural vegetation, terrain and watercourses must be preserved where possible with grading limits clearly marked; permanent vegetation and erosion structures must go in as soon as possible with provision for their long-term maintenance; topsoil may not leave the site without Director approval and stockpiles must be protected from erosion; runoff cannot be discharged at rates or velocities substantially above pre-grading levels except through approved drainage facilities; and permittees must keep vehicles from tracking earth material onto public streets, removing it immediately if it happens.

600 requires a written erosion and sediment control plan whenever the graded area exceeds 10,000 square feet on a slope over 5 percent, more than 2,500 square feet risks inadequate protection during the rainy season, grading occurs within 20 feet of a watercourse, or the Director determines a significant hazard exists; the plan must include a revegetation program with disturbed areas planted by October 15th if graded between April 1 and October 1, or within 15 days otherwise, and must be inspected and repaired at the close of each working day during the rainy season. 740 available if the permittee fails to act.