Clean Water Act discharge permit · NPDES OK0000523
USA-MCALESTER ARMY AMMUNITION, Mcalester, OK: NPDES OK0000523 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 33Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
USA-MCALESTER ARMY AMMUNITION, held by USA-McAlester Army Ammunition, holds NPDES permit OK0000523, which discharges to 220600030080 Bull Ck Below Brown Dam. EPA’s file records it issued July 22, 2015 and expiring July 31, 2020. 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.
Identity
| Facility as filed | USA-MCALESTER ARMY AMMUNITION |
|---|---|
| Permittee as filed | USA-McAlester Army Ammunition |
| NPDES ID | OK0000523 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Federal facility |
| Issued | July 22, 2015 |
| Expiration date | July 31, 2020 |
| Issuing agency | ODEQ |
| Address | Mcalester, OK 74501 |
| Receiving water | 220600030080 Bull Ck Below Brown Dam |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Bull Creek & Brown Lake (HUC 110902040402) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 36Pollutants on file
- 33Under a numeric limit
- 27With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 51 | 27 | July 31, 2026 | 101% over the limit |
| Coliform, fecal general | 2 | 19 | 11 | July 31, 2021 | 99,999% over the limit |
| E. coli | 0 | 9 | 9 | July 31, 2026 | 855% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 8 | 4 | January 31, 2005 | 156% over the limit |
| Whole effluent toxicity | 3 | 5 | 4 | January 31, 2019 | 100% over the limit |
| Trinitrotoluene [TNT], total | 8 | 43 | 3 | April 30, 2002 | 262% over the limit |
| Oil & Grease | 4 | 26 | 2 | October 31, 2004 | 300% over the limit |
| pH | 8 | 16 | 2 | October 31, 2004 | |
| Whole Effluent Toxicity [WET] - C. dubia | 0 | 1 | 1 | July 31, 2026 | 44% over the limit |
| RDX, total | 8 | 40 | 0 | ||
| HMX | 8 | 40 | 0 | ||
| Ammonium picrate | 8 | 36 | 0 | ||
| Flow, in conduit or thru treatment plant | 8 | 36 | 0 | ||
| Perchlorate [ClO4] | 8 | 36 | 0 | ||
| Nitrogen, ammonia total [as N] | 14 | 20 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 14 | 0 | ||
| 2,4-Dinitroanisole | 2 | 14 | 0 | ||
| Nitroguanidine | 2 | 14 | 0 | ||
| Chlorine, total residual | 1 | 4 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 3 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 2 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 1 | 0 | ||
| %Mortality 7Day Chronic Ceriodaphnia dubia | 3 | 1 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 1 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 1 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 3 | 1 | 0 | ||
| Zinc, total [as Zn] | 1 | 1 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| %Mortality Static Renewal 7Day Chronic Pimephales Promelas | 2 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| Copper, total [as Cu] | 1 | 0 | 0 | ||
| Whole effluent toxicity - retest #1 | 1 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 17, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 17, 2019 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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.
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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 OK0000523 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.