Erosion Control: Costa Mesa vs Garden Grove

Do I need a grading permit for minor landscaping in Costa Mesa?

Minor landscape fills less than three feet deep that do not exceed 50 cubic yards and do not obstruct a drainage course may be exempt from full grading permit requirements. Contact Development Services at (714) 754-5245 to confirm your project qualifies for an exemption.

What erosion controls are required during construction in Costa Mesa?

Construction sites must implement BMPs including silt fences, fiber rolls, stabilized construction entrances, dust control measures, and proper material storage. Projects disturbing one or more acres must also file a SWPPP with the State Water Resources Control Board.

What grading code does Costa Mesa follow?

Costa Mesa has adopted Article 8 of Title 7 of the Orange County Codified Ordinances, including the OC Grading Manual, with some local modifications specific to the city.

What erosion controls are needed for construction in Garden Grove?

All construction sites must use silt fences, fiber rolls, stabilized entrances, and soil covers to prevent sediment from reaching storm drains. Larger projects disturbing one or more acres also need a state Construction General Permit and SWPPP.

Are there seasonal erosion control requirements in Garden Grove?

Yes. During the rainy season from October through April, additional erosion and sediment controls may be required. Exposed soils should be stabilized and stockpiled materials must be covered or contained.

Who inspects erosion control compliance in Garden Grove?

Garden Grove building inspectors and Code Enforcement inspect construction sites for erosion control compliance. The State Water Resources Control Board oversees Construction General Permit compliance. Contact Community Development at (714) 741-5312.