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Clean Water Act discharge permit · NPDES OK0035203

TINKER AIR FORCE BASE, Oklahoma City, OK: NPDES OK0035203 discharge permit, effluent exceedances, inspections, penalties

TINKER AIR FORCE BASE, held by General Motors, holds NPDES permit OK0035203, which discharges to 520520000090 Unmd Trib/Crutcho Ck. EPA’s file records it issued August 29, 2003 and expiring August 31, 2008.

TINKER AIR FORCE BASE, Oklahoma City, Oklahoma: Individual permit OK0035203, held by General Motors; Administratively continued (past its expiration date and still in force until reissued); issued August 29, 2003, term to August 31, 2008, by ODEQ; discharges to 520520000090 unmd trib/Crutcho Ck.

  • Solids, total suspended: 1 limit, 22 violations of any kind, 20 effluent exceedances, latest October 31, 2013, largest 1,104% over the limit.
  • pH: 2 limits, 18 violations of any kind, 7 effluent exceedances, latest June 30, 2005.
  • Flow, in conduit or thru treatment plant: 1 limit, 4 violations of any kind, 0 effluent exceedances.
  • Oil and grease, hexane extr method: 1 limit, 3 violations of any kind, 0 effluent exceedances.
  • Oil & Grease: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Carbon, tot organic [TOC]: 0 limits, 1 violation of any kind, 0 effluent exceedances.

TINKER AIR FORCE BASE among its neighbors

EPA’s permit file holds 4 discharge permits in the Crutcho Creek subwatershed (HUC 111003020104), OK0035203 among them. Its county holds 30, 9 of them major permits; OK0035203 is a minor permit.

Other permits in the Crutcho Creek subwatershed (HUC 111003020104)

  • B9201 SOFTWARE INTEGRATION LAB TINKER AFB, Oklahoma City: OKR10F03A, minor permit, permit term to February 16, 2027
  • MIDWEST CITY, CITY OF - NORTH, Midwest City: OK0026841, major permit, discharging to 520520000060_00 Crutcho Ck/ North Canadian River, permit term to April 30, 2020
  • TINKER AFB, Oklahoma City: OK0000809, major permit, discharging to 520520 unmd trib/ Soldier Ck, permit term to August 31, 2017

Identity

Facility as filedTINKER AIR FORCE BASE
Permittee as filedGeneral Motors
NPDES IDOK0035203
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedAugust 29, 2003
Expiration dateAugust 31, 2008
Issuing agencyODEQ
AddressOklahoma City, OK 73135
Receiving water520520000090 unmd trib/Crutcho Ck
SubwatershedCrutcho Creek (HUC 111003020104)
SIC3479 – Metal Coating And Allied Services
Other EPA IDs (FRS)RCRA handler OKD082565714

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended12220October 31, 20131,104% over the limit
pH2187June 30, 2005
Flow, in conduit or thru treatment plant140
Oil and grease, hexane extr method130
Oil & Grease010
Carbon, tot organic [TOC]010

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES OK0035203.

Inspections

EPA’s inspection file holds no inspection for NPDES OK0035203.

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 OK0035203.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers NPDES permit OK0035203 for TINKER AIR FORCE BASE in Oklahoma City, OK, with permittee listed as General Motors, discharging to 520520000090 unmd trib/Crutcho Ck in the Crutcho Creek watershed (HUC 111003020104). The permit is administratively continued, shows a Minor Discharger class 4 status, has 2 pollutants under a numeric limit, and has 2 pollutants with an effluent exceedance.