Compare Regulations
Compare state-level permit requirements side-by-side (up to 4 states)
DE(3 more)
Rows with an amber indicator differ across selected states.
| Field | DE Delaware |
|---|---|
| NPDES Program | State-Delegated |
| Permitting Agency | Delaware Department of Natural Resources and Environmental Control (DNREC) |
| Permit Name | NPDES General Permit for Stormwater Discharges from Construction Activities (Permit No. DE0050164 / DER10000) |
| Construction Threshold | ≥ 1 acre of land disturbance (or < 1 acre if part of a larger common plan of development or sale) |
| NOI Lead Time | NOI must be submitted and acknowledged by DNREC before earth disturbance begins; no fixed calendar lead time is specified, but DNREC recommends allowing several weeks for processing |
| Application Method | Paper NOI form submitted to DNREC Division of Watershed Stewardship; ePermitting portal (myDNREC) for some applications — verify current method with agency |
| Permit Fee | $200 application fee; annual compliance fee of $200 for sites < 5 acres, $400 for sites 5–10 acres, $600 for sites > 10 acres (verify current schedule with DNREC) |
| SWPPP Required | Yes |
| PE Certification Required | No |
| SWPPP Template Available | Yes |
| Inspection Frequency | At least every 7 days during active construction and within 24 hours after a storm event producing ≥ 0.5 inches of rainfall |
| Inspector Qualification | Inspector must be knowledgeable about the SWPPP and BMPs; Delaware does not have a state-specific inspector certification, but CPESC (Certified Professional in Erosion and Sediment Control) or equivalent is recommended |
| Post-Construction Required | Yes |
| Turbidity Standard | No numeric NTU limit specified in the construction general permit; narrative standard applies — discharges must not cause or contribute to violations of Delaware's water quality standards |