Clean Water Act discharge permit · NPDES OK0045250
OG&E-MCCLAIN, Newcastle, OK: NPDES OK0045250 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 18Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
- 1Inspections on file
- 0Formal enforcement actions
OG&E-MCCLAIN, held by OG&E-McClain Generating Station, holds NPDES permit OK0045250, which discharges to 520610010010_20 South Canadian. EPA’s file records it issued December 9, 2013 and expiring January 31, 2019. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | OG&E-MCCLAIN |
|---|---|
| Permittee as filed | OG&E-McClain Generating Station |
| NPDES ID | OK0045250 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 9, 2013 |
| Expiration date | January 31, 2019 |
| Issuing agency | ODEQ |
| Address | Newcastle, OK 73065 |
| Receiving water | 520610010010_20 South Canadian |
| Subwatershed | Pond Creek-Canadian River (HUC 110902020303) |
| NAICS | 221121 – Electric Bulk Power Transmission and Control |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler OKR000017244; ICIS-AIR source OK0000004008700026 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 18Pollutants on file
- 18Under a numeric limit
- 14With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Oxidants, total residual | 1 | 5 | 5 | June 30, 2017 | 1,900% over the limit |
| Solids, total suspended | 2 | 3 | 1 | May 31, 2012 | 2% over the limit |
| pH | 2 | 1 | 1 | June 30, 2015 | |
| Solids, total dissolved- 180 deg. C | 3 | 9 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 3 | 0 | ||
| LC50 Static Renewal 48Hr Acute Daphnia pulex | 1 | 3 | 0 | ||
| LC50 Static Renewal 48Hr Acute Pimephales promelas | 1 | 3 | 0 | ||
| LC50 Pass/Fail Static Renewal 48Hr Acute Daphnia Pulex | 1 | 3 | 0 | ||
| LC50 Static Renewal 48Hr Acute Pimephales promelas | 1 | 3 | 0 | ||
| %Mortality Static Renewal 48Hr Acute Daphnia Pulex | 1 | 3 | 0 | ||
| % Mortality Static Renewal 48 Hr Pimephales promelas or use TJA6C | 1 | 3 | 0 | ||
| Oil and grease, hexane extr method | 2 | 2 | 0 | ||
| Chlorine, free available | 2 | 2 | 0 | ||
| Whole effluent toxicity - retest #2 | 1 | 2 | 0 | ||
| Temperature, water deg. centigrade | 2 | 0 | 0 | ||
| Selenium, total [as Se] | 2 | 0 | 0 | ||
| Mercury, total [as Hg] | 2 | 0 | 0 | ||
| Whole effluent toxicity - retest #1 | 1 | 0 | 0 |
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 OK0045250.
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| July 23, 2026 | Evaluation | S |
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES OK0045250.
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, OK0045250.
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 OK0045250 there.
OG&E-MCCLAIN, Newcastle, Oklahoma: Individual permit OK0045250, held by OG&E-McClain Generating Station; Administratively continued (past its expiration date and still in force until reissued); issued December 9, 2013, term to January 31, 2019, by ODEQ; discharges to 520610010010_20 South Canadian; Electric Bulk Power Transmission and Control.
4 of the 18 pollutants listed for NPDES OK0045250 have no violation or effluent exceedance.
- Oxidants, total residual: 1 limit, 5 violations of any kind, 5 effluent exceedances, latest June 30, 2017, largest 1,900% over the limit.
- Solids, total suspended: 2 limits, 3 violations of any kind, 1 effluent exceedance, latest May 31, 2012, largest 2% over the limit.
- pH: 2 limits, 1 violation of any kind, 1 effluent exceedance, latest June 30, 2015.
- Solids, total dissolved- 180 deg. C: 3 limits, 9 violations of any kind.
- Flow, in conduit or thru treatment plant: 4 limits, 3 violations of any kind.
- LC50 Static Renewal 48Hr Acute Daphnia pulex: 1 limit, 3 violations of any kind.
- LC50 Static Renewal 48Hr Acute Pimephales promelas: 1 limit, 3 violations of any kind.
- LC50 Pass/Fail Static Renewal 48Hr Acute Daphnia Pulex: 1 limit, 3 violations of any kind.
- LC50 Static Renewal 48Hr Acute Pimephales promelas: 1 limit, 3 violations of any kind.
- %Mortality Static Renewal 48Hr Acute Daphnia Pulex: 1 limit, 3 violations of any kind.
- % Mortality Static Renewal 48 Hr Pimephales promelas or use TJA6C: 1 limit, 3 violations of any kind.
- Oil and grease, hexane extr method: 2 limits, 2 violations of any kind.
- Chlorine, free available: 2 limits, 2 violations of any kind.
- Whole effluent toxicity - retest #2: 1 limit, 2 violations of any kind.
- Temperature, water deg. centigrade: 2 limits.
- Selenium, total [as Se]: 2 limits.
- Mercury, total [as Hg]: 2 limits.
- Whole effluent toxicity - retest #1: 1 limit.
- July 23, 2026: Evaluation (S).
OG&E-MCCLAIN among its neighbors
4 discharge permits are in the Pond Creek-Canadian River subwatershed (HUC 110902020303); OK0045250 is one. Its county: 5, 1 major; OK0045250 is major permit.
Other permits in the Pond Creek-Canadian River subwatershed (HUC 110902020303)
- MOORE, CITY OF, Moore: OK0027391, major, term to 2021-02-28
- NEWCASTLE PUBLIC WORKS AUTH., Newcastle: OK0028614, minor, term to 2020-12-31
- OKLAHOMA CITY- S CANADIAN, Oklahoma City: OK0038385, major, term to 2014-04-30
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.
What this page shows
This public-records page covers the Clean Water Act discharge permit NPDES OK0045250, held by OG&E-McClain Generating Station at OG&E-MCCLAIN in Newcastle, OK, which discharges to 520610010010_20 South Canadian and is listed as a Major Discharger administratively continued. The page lists 3 pollutants under a numeric limit and 3 pollutants with an effluent exceedance, with the permit issued December 9, 2013 and expiring January 31, 2019.