Erosion Control: Altadena vs Inglewood
How do erosion control rules compare between Altadena, CA and Inglewood, CA?
Altadena and Inglewood have similar restriction levels.
Altadena, CA
Los Angeles County
All grading and disturbed sites in Altadena must implement erosion controls under LA County Building Code Title 26 Appendix J and the County's MS4 permit. Rainy-season grading (Oct 15 – Apr 15) requires Best Management Practices approved by Public Works.
View full Altadena rules →Inglewood, CA
Los Angeles County
Construction sites must implement erosion and sediment control BMPs per the Municipal NPDES Permit. The City Building Official evaluates grading and erosion requirements before permits are issued. SWPPP required for sites over 1 acre.
View full Inglewood rules →Key Facts Comparison
| Fact | Altadena | Inglewood |
|---|---|---|
| Code Section | LA County Title 26 App. J + CSD 22.306.060.B.3.b | - |
| Rainy Season | Oct 15 – Apr 15 | - |
| BMPs Required | Silt fences, fiber rolls, hydroseed | - |
| SWPPP | - | Required for sites >1 acre |
| BMPs | - | Required for all construction |
| NPDES | - | Municipal permit compliance |
| Review | - | City Building Official evaluates |
Highlighted rows indicate differences between cities.
Altadena FAQ
Do I need erosion controls during winter construction in Altadena?
Yes — rainy-season grading (Oct 15 to Apr 15) must implement Public Works–approved BMPs per Altadena CSD 22.306.060.B.3.b.
Inglewood FAQ
Do I need erosion control for a small project?
Most jurisdictions require erosion control for any ground disturbance over 500 to 1,000 square feet. Check Inglewood grading permit requirements.
Who inspects erosion controls?
Inglewood building or public works department inspects during active construction. Federal EPA NPDES permits may also apply for sites over one acre.
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