The City of Orange requires erosion control measures for all grading and construction projects under OMC Title 15 (Building and Construction) and the city's NPDES stormwater permit. A Water Quality Management Plan (WQMP) is required for most development projects.
Under the City of Orange's NPDES permit (R8-2009-0030) and OMC Title 15, all construction and grading projects must implement erosion control best management practices (BMPs) to prevent sediment discharge into storm drains and waterways. Prior to grading permit issuance, applicants must submit a Project WQMP for review and approval by the Public Works Department. Construction site BMPs include silt fences, fiber rolls, stabilized construction entrances, soil stockpile covers, and revegetation of disturbed areas. The city's Local Implementation Plan (LIP) under the Orange County Drainage Area Management Plan (DAMP) specifies requirements. All projects exceeding certain thresholds must prepare a Stormwater Pollution Prevention Plan (SWPPP).
Failure to implement erosion control may result in stop-work orders, fines, and required remediation. Discharging sediment into storm drains violates federal and state clean water laws.
Orange, CA
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Orange, CA
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Orange, CA
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Orange, CA
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Orange, CA
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Orange, CA
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Side-by-side rule comparisons with other cities in Orange County.
See how other cities in Orange County handle erosion control.
See how Orange's erosion control rules stack up against other locations.
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