Environmental Rules in Vacaville, CA (2026)
6 verified environmental rules for Vacaville, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Vacaville's Urban Storm Water Quality, Management and Discharge Control Ordinance requires anyone whose activity could pollute storm water to follow best management practices tied to the City's NPDES General Permit CAS000004. Section 14.26.030.010 lets the City adopt and enforce BMPs for construction, new development, and ongoing operations, and makes compliance mandatory wherever the City, state, or a federal agency has promulgated a BMP requirement.
Vacaville Storm Water Pollution Control Rules
Some RestrictionsVacaville Municipal Code § 14.26.030.010(A)
A. Authorization to Adopt and Improve Best Management Practices (BMPs). The City is subject to and may enforce BMPs as specified in the State Water Resources Control Board NPDES Permit CAS000004 and will adopt further requirements identifying BMPs for any activity, operation, or facility which may cause or contribute to pollution or contamination of storm water, the storm drain system, or water...
Erosion Control
Vacaville regulates erosion and sediment control through Chapter 14.19's Grading, Erosion, and Sediment Control Ordinance. Under Section 14.19.244.010(D), the Building Official, City Engineer, or Director of Public Works can require erosion control on any graded slope, and disturbed slopes over three feet of erodible material must have approved erosion control installed by October 1st ahead of the rainy season.
Vacaville Grading Erosion Control Standards
Some RestrictionsVacaville Municipal Code § 14.19.244.010(D)
D. Erosion Control Measures. All grading shall be subject to erosion control measures as required by the Building Official, the City Engineer, or the Director of Public Works, as appropriate. Erosion control measure shall include the following: 1. Filter Materials. Filter materials shall be provided to prevent any debris and dirt from the construction activity from flowing into the City storm d...
Flood Zones
Any construction or development within a mapped area of special flood hazard in Vacaville requires a development permit issued by the Floodplain Administrator before work begins. The city's floodplain rules are keyed to the FEMA Flood Insurance Study and Flood Insurance Rate Maps dated January 17, 1997, and building without the required permit is a misdemeanor under the Vacaville Municipal Code.
Vacaville Floodplain Development Permit Rules
Some RestrictionsVacaville Municipal Code § 14.18.040.010
A development permit shall be obtained before any construction or other development begins within any area of special flood hazard established in Section 14.18.030.020. Application for a development permit shall be made on forms furnished by the Floodplain Administrator and may include, but not be limited to: plans in duplicate drawn to scale showing the nature, location, dimensions, and elevat...
Defensible Space
New residential development within 200 feet of open space lands where wildfire is a threat must provide a 50-foot noncombustible defensible-space buffer between residential yards and the open land, under Vacaville's local wildfire development standards chapter.
Vacaville Requires 50-Ft Buffer Near Open Space Lands
Some RestrictionsVacaville Municipal Code § 15.20.273.040
§ 15.20.273.040. Fire Buffer Zone. There shall be a total of 50 feet of noncombustible defensible space located between residential yards that are adjacent to open lands where wildfire is a threat. A. This space may be located within the parcel, outside the parcel, or a combination of both. B. Subject to the review and approval of the Fire Chief, the 50-foot fire buffer zone may include a combi...
Vehicle Idling Restrictions
Vacaville Municipal Code Section 10.20.020(Y) bars stopping, standing, or parking a commercial vehicle of 10,000 pounds gross vehicle weight or more within 500 feet of an occupied dwelling between 10:00 p.m. and 6:00 a.m. while its engine or refrigerator unit is running. The rule targets overnight truck and reefer-trailer noise in residential areas.
Vacaville Truck Idling Curfew Near Homes
Some RestrictionsVacaville Municipal Code Section 10.20.020(Y)
A person shall not stop, stand or park a vehicle: ... Y. Any commercial vehicle having a manufacturer's gross vehicle weight rating of 10,000 pounds or more on any street within 500 feet of any occupied dwelling between the hours of 10:00 p.m. and 6:00 a.m. while the vehicle's engine or refrigerator motor of any other kind is operating, running, idling, or is on;
Flood Elevation Requirements
Vacaville requires new residential construction and substantial improvements in a mapped flood zone to have the lowest floor, including any basement, built at or above the base flood elevation, with AO-zone structures elevated to the FIRM depth number or at least two feet above the highest adjacent grade. A licensed engineer or surveyor must certify the finished elevation to the Floodplain Administrator.
Vacaville Base Flood Elevation Standards
Some RestrictionsVacaville Municipal Code § 14.18.050.010(C)(1)-(2)
1. Residential construction, new or substantial improvement, shall have the lowest floor, including basement: a. In an AO zone, elevated above the highest adjacent grade to a height equal to or exceeding the depth number specified in feet on the FIRM, or elevated at least two feet above the highest adjacent grade if no depth number is specified. b. In an A zone, elevated to or above the base fl...
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