Compare Regulations
Compare state-level permit requirements side-by-side (up to 4 states)
WY(3 more)
Rows with an amber indicator differ across selected states.
| Field | WY Wyoming |
|---|---|
| NPDES Program | State-Delegated |
| Permitting Agency | Wyoming Department of Environmental Quality (WDEQ) |
| Permit Name | Wyoming NPDES General Permit for Stormwater Discharges Associated with Construction Activity (WYR10-0000) |
| Construction Threshold | ≥ 1 acre of land disturbance (or < 1 acre if part of a larger common plan of development or sale that will ultimately disturb ≥ 1 acre) |
| NOI Lead Time | A Notice of Intent (NOI) must be submitted to WDEQ at least 10 days before land disturbance begins; permit coverage is not automatic and operators must receive a permit coverage acknowledgment letter before commencing disturbance |
| Application Method | Paper NOI submitted to WDEQ Water Quality Division, Construction Program; online submission is available through the WDEQ Online Permit System (WDEQ ePermit); the NOI must be accompanied by the SWPPP certification statement |
| Permit Fee | $500 for projects disturbing < 5 acres; $1,000 for projects disturbing 5–25 acres; $2,000 for projects disturbing > 25 acres; fee payable to WDEQ; no annual renewal fee for projects completing disturbance and stabilization within one permit term |
| SWPPP Required | Yes |
| PE Certification Required | No |
| SWPPP Template Available | Yes |
| Inspection Frequency | At least once every 14 calendar days and within 24 hours of a precipitation or snowmelt event that causes stormwater runoff; during periods of frozen conditions where runoff is not likely, inspection frequency may be reduced to once per month; inspection records must be retained for at least 3 years |
| Inspector Qualification | Inspections must be conducted by a qualified person as defined in the permit — someone knowledgeable in the principles and practice of erosion and sediment control. Wyoming does not have a separate mandatory state inspector certification program; however, WDEQ recommends training through nationally recognized programs such as CPESC (Certified Professional in Erosion and Sediment Control) or equivalent courses. Some local jurisdictions may require specific credentials. |
| Post-Construction Required | Yes |
| Turbidity Standard | No specific numeric NTU limit in the construction general permit; discharges must comply with Wyoming water quality standards (Chapter 1, Wyoming Surface Water Quality Standards) |