Erosion Control: Anaheim vs Costa Mesa
How do erosion control rules compare between Anaheim, CA and Costa Mesa, CA?
Anaheim and Costa Mesa have similar restriction levels.
Anaheim, CA
Orange County
Anaheim requires erosion control measures for grading and construction projects under AMC Title 17 and the city's Storm Drainage Manual. Projects must comply with the Orange County MS4 stormwater permit requirements.
View full Anaheim rules →Costa Mesa, CA
Orange County
Costa Mesa requires erosion and sediment control measures for all construction and grading activities. The city has adopted Article 8 of Title 7 of the Orange County Codified Ordinances (Grading Manual) with local modifications, requiring developers to prevent soil erosion and sedimentation during and after construction.
View full Costa Mesa rules →Key Facts Comparison
| Fact | Anaheim | Costa Mesa |
|---|---|---|
| SWPPP | Required for 1+ acre | - |
| Rainy Season | Oct 1–Apr 15 BMPs | - |
| MS4 Permit | North OC program | - |
| Code | AMC Title 17 | - |
| Grading Code | - | OC Article 8, Title 7 (adopted) |
| SWPPP Threshold | - | 1+ acre disturbance |
| Fill Exemption | - | <1 ft deep, <50 cu yd, <5:1 slope |
| Planter Exemption | - | <3 ft deep, <50 cu yd |
| Contact | - | Development Services (714) 754-5245 |
Highlighted rows indicate differences between cities.
Anaheim FAQ
Do I need erosion control for my construction project?
Yes. All grading and construction projects must implement BMPs. Projects over one acre need a state NPDES permit with a SWPPP.
When must erosion controls be in place?
Before the rainy season starting October 1. BMPs must remain effective through April 15 and until final stabilization.
Costa Mesa FAQ
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.
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