Compare Regulations
Compare state-level permit requirements side-by-side (up to 4 states)
CT(3 more)
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| Field | CT Connecticut |
|---|---|
| NPDES Program | State-Delegated |
| Permitting Agency | Connecticut Department of Energy and Environmental Protection (DEEP) |
| Permit Name | General Permit for the Discharge of Stormwater and Dewatering Wastewaters from Construction Activities (Permit No. 9-300-100, reissued 2021) |
| Construction Threshold | ≥ 1 acre of land disturbance, or < 1 acre if part of a larger common plan of development or sale; also applies to any dewatering discharges from construction sites of any size |
| NOI Lead Time | Registration (NOI equivalent) must be submitted at least 5 days before construction begins; DEEP issues a registration number upon receipt of a complete submission |
| Application Method | Online via CT DEEP eDEP (electronic submission portal) at https://www.ct.gov/deep/edep; paper registration form also accepted |
| Permit Fee | $625 for initial registration; no annual renewal fee for the term of the general permit |
| SWPPP Required | Yes |
| PE Certification Required | Yes |
| SWPPP Template Available | Yes |
| Inspection Frequency | At least every 7 calendar days and within 24 hours of any storm event that produces 0.5 inches or more of rainfall; sites that have achieved final stabilization may reduce inspection frequency |
| Inspector Qualification | Inspections must be conducted by a Certified Soil Erosion and Sediment Control (SESC) Inspector or a qualified professional with equivalent training. Connecticut's SESC Inspector certification is administered by the Connecticut DEEP and the University of Connecticut Extension. This certification is a notable state-specific requirement not common in other states. |
| Post-Construction Required | Yes |
| Turbidity Standard | No specific numeric NTU limit in the construction general permit; narrative water quality standard applies; dewatering discharges must meet a turbidity limit of 50 NTU or demonstrate best practicable treatment |