Clean Water Act discharge permit · NPDES OKG270066
GRDA-GRAND RIVER ENERGY CENTER PROJECT, Chouteau, OK: NPDES OKG270066 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
GRDA-GRAND RIVER ENERGY CENTER PROJECT, held by GRDA-Grand River Energy Center Project (unit4), holds NPDES permit OKG270066, which discharges to 121500020280_10 Middle Arkansas River Basin. EPA’s file records it issued May 2, 2024 and expiring March 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for GRDA-GRAND RIVER ENERGY CENTER PROJECT: its NPDES ID, its permit type and status, its dates, its address in Chouteau, Oklahoma, its receiving water, and 9 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES OKG270066.
Identity
| Facility as filed | GRDA-GRAND RIVER ENERGY CENTER PROJECT |
|---|---|
| Permittee as filed | GRDA-Grand River Energy Center Project (unit4) |
| NPDES ID | OKG270066 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 2, 2024 |
| Expiration date | March 31, 2025 |
| Issuing agency | OKDEQ |
| Address | Chouteau, OK 74337 |
| Receiving water | 121500020280_10 Middle Arkansas River Basin |
| Subwatershed | Beaver Creek (HUC 111101040204) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| pH | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Solids, total suspended | 1 | 0 | 0 | ||
| Oil & Grease | 1 | 0 | 0 | ||
| Benzene | 1 | 0 | 0 | ||
| BTEX | 1 | 0 | 0 | ||
| Chlorine, total residual | 1 | 0 | 0 | ||
| Total Petroleum Hydrocarbons - Diesel | 1 | 0 | 0 | ||
| Total Petroleum Hydrocarbons - Gasoline | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES OKG270066.
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES OKG270066.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, OKG270066.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID OKG270066 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.