Clean Water Act discharge permit · NPDES OK0000809
TINKER AFB, Oklahoma City, OK: NPDES OK0000809 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
TINKER AFB, held by USAF-Tinker AFB-OKC, holds NPDES permit OK0000809, which discharges to 520520 Unmd Trib/ Soldier Ck. EPA’s file records it issued August 31, 2012 and expiring August 31, 2017. 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 | TINKER AFB |
|---|---|
| Permittee as filed | USAF-Tinker AFB-OKC |
| NPDES ID | OK0000809 |
| 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 | August 31, 2012 |
| Expiration date | August 31, 2017 |
| Issuing agency | ODEQ |
| Address | Oklahoma City, OK 73145 |
| Receiving water | 520520 unmd trib/ Soldier Ck |
| Subwatershed | Crutcho Creek (HUC 111003020104) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 25Pollutants on file
- 17Under a numeric limit
- 23With a violation of any kind
- 11With 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 |
|---|---|---|---|---|---|
| Oxygen demand, chem. [high level] [COD] | 20 | 94 | 70 | January 31, 2026 | 5,600% over the limit |
| Solids, total suspended | 20 | 104 | 68 | April 30, 2025 | 686% over the limit |
| pH | 20 | 89 | 68 | November 30, 2025 | |
| Zinc, total [as Zn] | 3 | 62 | 60 | August 31, 2017 | 1,500% over the limit |
| Copper, total [as Cu] | 4 | 39 | 31 | June 30, 2019 | 394% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 17 | 15 | February 28, 2026 | 518% over the limit |
| Chlorine, total residual | 6 | 19 | 14 | June 30, 2025 | 1,112% over the limit |
| Oil and grease, hexane extr method | 20 | 30 | 9 | March 31, 2024 | 920% over the limit |
| Chloride [as Cl] | 5 | 9 | 5 | February 28, 2013 | 34% over the limit |
| Cadmium, total [as Cd] | 2 | 9 | 5 | June 30, 2016 | 11,321% over the limit |
| Oil & Grease | 0 | 5 | 5 | October 31, 2003 | 100% over the limit |
| Flow, in conduit or thru treatment plant | 20 | 20 | 0 | ||
| Solids, total dissolved- 180 deg. C | 4 | 6 | 0 | ||
| Manganese, total [as Mn] | 7 | 4 | 0 | ||
| Whole effluent toxicity | 0 | 3 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 2 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| Sulfate, total [as SO4] | 2 | 1 | 0 | ||
| Chromium, total [as Cr] | 1 | 0 | 0 | ||
| Silver, total [as Ag] | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 30, 2025 | Permit Violations - Failure to Submit Timely Permit Renewal Application | ST6 |
| May 4, 2024 | Effluent Violations - Unauthorized Discharge | ST6 |
| May 4, 2024 | Effluent Violations - Reported Fish Kill | ST6 |
| June 5, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 26, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| April 12, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
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.
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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 OK0000809 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.