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City of Riverside(3 more)
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| Field | Local City of Riverside City of Riverside Public Works Department / Community and Economic Development Department |
|---|---|
| Permit | |
| Permit / Authorization | Grading Permit with Water Quality Management Plan (WQMP) |
| Submit To | City of Riverside Public Works Department / Community and Economic Development Department |
| Lead Time | Plan review 4–6 weeks; WQMP reviewed concurrently with grading/building permit |
| Application Method | Online or in-person via City of Riverside permit center; WQMP submitted as part of permit application |
| Fee | Grading permit fees per project scope; WQMP review fee included |
| Water Quality | |
| Impervious Cover Limit | No citywide cap; projects creating ≥ 5,000 sq ft of new impervious surface require a project-specific WQMP |
| On-Site Treatment Required | Yes |
| Detention Required | Yes — Retain the 85th-percentile 24-hour storm event using LID BMPs; infiltration preferred in areas with suitable soils; bioretention or proprietary treatment accepted elsewhere |
| Turbidity / Discharge Standard | Must comply with state CGP and Santa Ana Regional Water Board Basin Plan objectives |
| SWPPP | |
| SWPPP / Local Plan Required | Yes — Project-specific Water Quality Management Plan (WQMP) for post-construction; SWPPP per state CGP for construction |
| PE Stamp Required | Yes |
| Inspections | |
| Inspection Requirements | City conducts grading inspections and BMP installation verification. Post-construction BMPs require recorded maintenance agreements with annual self-inspection. |
| Inspector Qualification | QSP/QSD per state CGP; no additional city certification |
| Design & Zones | |
| Local Design Manual | Riverside County WQMP Guidance / Santa Ana Region BMP Design Manual |
| Special Overlay Zones | Santa Ana River Watershed, Hillside / Steep Slope Overlay |