Erosion Control: Bonsall vs San Marcos
How do erosion control rules compare between Bonsall, CA and San Marcos, CA?
Bonsall and San Marcos have similar restriction levels.
Bonsall, CA
San Diego County
San Diego County's Grading Ordinance requires erosion and sediment control measures for all grading and construction activities. Physical or vegetation BMPs must be deployed immediately upon completion of grading. The area cleared and left exposed at one time is limited.
View full Bonsall rules →San Marcos, CA
San Diego County
San Marcos requires erosion and sediment control for all grading and construction activities under SMMC Chapter 14.15 and the grading ordinance. Plans must be approved before ground disturbance begins.
View full San Marcos rules →Key Facts Comparison
| Fact | Bonsall | San Marcos |
|---|---|---|
| BMP Deployment | Immediately upon grading completion | - |
| Exposed Area | Limited to protectable amount | - |
| Grading Permit | Required for 200+ cubic yards or 8+ ft cuts | - |
| Slope Planting | Required to prevent erosion | - |
| Ordinance | Division 7 — Grading, Clearing, Watercourses | - |
| State Threshold | - | 1 acre triggers CGP |
| Rainy Season | - | Oct 1 - Apr 30 enhanced BMPs |
| Governing Code | - | SMMC Ch. 14.15 & Title 17 |
| Plan Required | - | Erosion control plan with grading permit |
Highlighted rows indicate differences between cities.
Bonsall FAQ
Do I need erosion control on my construction site in San Diego County?
Yes. All grading and construction activities require erosion and sediment control BMPs. These must be deployed immediately as each portion of grading is completed.
When is a grading permit required?
Grading permits are required when excavation or fill exceeds 200 cubic yards of material movement, or when cuts or fills exceed 8 feet in vertical height.
What are common erosion control BMPs?
Common measures include silt fences, fiber rolls, erosion control blankets, gravel bags, hydroseeding, and temporary detention basins. The specific BMPs depend on site conditions and project scope.
San Marcos FAQ
When do I need erosion control measures in San Marcos?
All construction and grading activities require erosion and sediment control. Projects disturbing 1+ acres need a state SWPPP. Enhanced measures are required during the rainy season (Oct 1 - Apr 30).
What erosion control BMPs are required?
Common required BMPs include silt fences, fiber rolls, gravel bag barriers, stabilized construction entrances, soil cover for stockpiles, and dust control measures.
Do I need a grading permit for erosion control work?
A grading permit from Development Services is required for earthwork. The permit application must include an erosion control plan.
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