Stormwater Management: Isleton vs Vineyard
How do stormwater management rules compare between Isleton, CA and Vineyard, CA?
Isleton has fewer restrictions than Vineyard.
Isleton, CA
Sacramento County
Isleton operates under a state general NPDES MS4 permit for small communities. Illicit discharges to storm drains, sloughs, and the Sacramento River are prohibited. Construction sites over 1 acre require coverage under the Construction General Permit with a SWPPP.
View full Isleton rules →Vineyard, CA
Sacramento County
Sacramento County operates under a joint NPDES MS4 Permit (R5-2016-0040) with the City of Sacramento and other co-permittees. County Code Chapter 15.12 implements stormwater pollution prevention. New and redevelopment projects over 1 acre (or smaller in some cases) must comply with Post-Construction Stormwater Standards including LID and hydromodification controls.
View full Vineyard rules →Key Facts Comparison
| Fact | Isleton | Vineyard |
|---|---|---|
| Permit Type | State MS4 Phase II | - |
| Discharge Threshold | 1 acre construction | - |
| Required Plan | SWPPP | - |
| Max Fine | 25,000 per day | - |
| Receiving Water | Sacramento River | - |
| Permit | - | NPDES R5-2016-0040 |
| County Code | - | Chapter 15.12 |
| SWPPP | - | 1+ acre disturbance |
| LID | - | 5,000+ sq ft impervious |
| Penalty | - | Up to $10,000/day |
Highlighted rows indicate differences between cities.
Isleton FAQ
Can I drain my pool into the street?
Not if it contains chlorine or cleaning chemicals. Dechlorinate first or discharge to landscaping to avoid an illicit discharge violation.
Do I need a SWPPP for a house remodel?
Only if the disturbed ground area exceeds 1 acre. Most residential projects fall well below that threshold.
Vineyard FAQ
Can I wash my car in my driveway?
Residential car washing is allowed but soapy water should be directed to landscaped areas, not the street or storm drain.
Do I need a SWPPP for my home remodel?
Only if construction disturbs 1 acre or more. Smaller sites still need erosion and sediment control Best Management Practices.
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