Compare Regulations
Compare state-level permit requirements side-by-side (up to 4 states)
CO(3 more)
Rows with an amber indicator differ across selected states.
| Field | CO Colorado |
|---|---|
| NPDES Program | State-Delegated |
| Permitting Agency | Colorado Department of Public Health and Environment, Water Quality Control Division (CDPHE WQCD) |
| Permit Name | Construction Dewatering and Stormwater General Permit (COR400000) |
| Construction Threshold | ≥ 1 acre of land disturbance (or < 1 acre if part of a larger common plan of development exceeding 1 acre) |
| NOI Lead Time | Stormwater Management Plan (SWMP) must be developed before construction; permit coverage active upon filing NOI |
| Application Method | Online via CDPHE's Stormwater Compliance Assistance Program (SCAP) portal |
| Permit Fee | $340 annual fee; $170 for < 1 year of coverage |
| SWPPP Required | Yes |
| PE Certification Required | No |
| SWPPP Template Available | Yes |
| Inspection Frequency | Every 14 days and within 24 hours of precipitation events producing ≥ 0.5 inches (or ≥ 0.1 inches in the semiarid zone) |
| Inspector Qualification | Stormwater Management Plan Inspector (SMPI) — must complete CDPHE-approved training course. Certification must be renewed every 3 years. |
| Post-Construction Required | Yes |
| Turbidity Standard | Not specified as a numeric limit in the General Permit; discharges must comply with narrative water quality standards |