Compare Regulations
Compare state-level permit requirements side-by-side (up to 4 states)
OK(3 more)
Rows with an amber indicator differ across selected states.
| Field | OK Oklahoma |
|---|---|
| NPDES Program | State-Delegated |
| Permitting Agency | Oklahoma Department of Environmental Quality (ODEQ) |
| Permit Name | OPDES General Permit for Stormwater Discharges from Construction Activities (OKR10) |
| 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 | NOI must be submitted and acknowledged by ODEQ before construction activities begin; operators must wait for authorization acknowledgment (typically within 2–7 business days for online submissions) |
| Application Method | Online via ODEQ's Oklahoma Environmental Permitting System (OEPS); paper NOI (Form 605-007) also accepted via mail |
| Permit Fee | $300 for sites disturbing < 5 acres; $800 for sites disturbing ≥ 5 acres; no annual renewal fee for the duration of the project |
| SWPPP Required | Yes |
| PE Certification Required | No |
| SWPPP Template Available | Yes |
| Inspection Frequency | Every 7 days and within 24 hours of a precipitation event that causes a discharge from the site. Frequency may be reduced to every 14 days for sites where all disturbed areas have been temporarily or finally stabilized, or where runoff is unlikely due to winter conditions. |
| Inspector Qualification | No formal state certification is required by OKR10; inspections must be conducted by a 'qualified person' with knowledge of BMPs and the SWPPP. Oklahoma does not mandate a specific inspector certification credential under the general permit, though training through organizations such as CPESC or CESSWI is common practice. |
| Post-Construction Required | Yes |
| Turbidity Standard | No numeric NTU effluent limit specified in OKR10; discharges must not cause or contribute to violations of Oklahoma water quality standards |