Erosion Control: Rialto vs Victorville
How do erosion control rules compare between Rialto, CA and Victorville, CA?
Rialto and Victorville have similar restriction levels.
Rialto, CA
San Bernardino County
Rialto requires erosion and sediment control Best Management Practices on all grading and construction sites under the California Building Code Appendix J (adopted in Title 15) and the city's grading ordinance. Projects disturbing 1 acre or more must obtain coverage under the State Construction General Permit (NPDES CAS000002) and implement a SWPPP. Wind-erosion (PM10) controls are also required by SCAQMD Rule 403 (Fugitive Dust) given Rialto's South Coast Air Basin location.
View full Rialto rules →Victorville, CA
San Bernardino County
Victorville requires erosion control plans for grading over 50 cubic yards or slopes. MDAQMD Rule 403 mandates dust suppression. Desert flash floods make sediment control critical.
View full Victorville rules →Key Facts Comparison
| Fact | Rialto | Victorville |
|---|---|---|
| Grading code | CBC Appendix J via Rialto Title 15 | - |
| SWPPP threshold | 1 acre disturbed (Construction General Permit) | - |
| Fugitive dust rule | SCAQMD Rule 403 (any active disturbance >0.1 ac) | - |
| BMP standard | CASQA BMP Handbook | - |
| Penalties | Cal. Water Code §13385; SCAQMD Rule 403 enforcement | - |
| Grading threshold | - | 50 cubic yards or 3:1 slopes |
| Plan required | - | Erosion control plan with permit |
| Dust rule | - | MDAQMD Rule 403 |
| BMPs | - | Silt fence, wattles, stabilization |
| Fines | - | Up to $10,000/day |
Highlighted rows indicate differences between cities.
Rialto FAQ
Do small backyard grading projects need erosion control?
Yes. Even sites under 1 acre must use BMPs such as silt fences or fiber rolls at the downhill edge under Title 15 and SCAQMD Rule 403. A grading permit is required for cuts/fills exceeding CBC Appendix J thresholds (generally 50 cubic yards).
What is a SWPPP and who can write one?
A Storm Water Pollution Prevention Plan is required for any construction site of 1 acre or larger under the State Construction General Permit. It must be prepared by a Qualified SWPPP Developer (QSD) and implemented by a Qualified SWPPP Practitioner (QSP).
How long must erosion controls remain in place?
Until disturbed soil is permanently stabilized (70% vegetative cover or approved hardscape) and the Notice of Termination is approved by the State Water Board.
Victorville FAQ
Do I need a plan for a small backyard project?
Under 50 cubic yards typically is exempt from grading permit, but MDAQMD dust rules still apply.
What counts as dust control?
Water application, gravel surfacing, polymer stabilizers, or vegetative cover on disturbed soil.
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