Clean Water Act discharge permit · NPDES OK0036081
YALE SOUTH CORPORATION, Tulsa, OK: NPDES OK0036081 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
YALE SOUTH CORPORATION, held by Keystone Manor WWTF, holds NPDES permit OK0036081, which discharges to 620900010020_00 Trib/Keystone Reservoir. EPA’s file records it issued November 7, 2017 and expiring November 30, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | YALE SOUTH CORPORATION |
|---|---|
| Permittee as filed | Keystone Manor WWTF |
| NPDES ID | OK0036081 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | November 7, 2017 |
| Expiration date | November 30, 2022 |
| Issuing agency | ODEQ |
| Address | Tulsa, OK 74044 |
| Receiving water | 620900010020_00 trib/Keystone Reservoir |
| Subwatershed | Lower Salt Creek-Cimarron River (HUC 110500030509) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 7Under a numeric limit
- 7With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 3 | 231 | 207 | May 31, 2026 | 2,400% over the limit |
| Solids, total suspended | 3 | 167 | 140 | June 30, 2026 | 1,718% over the limit |
| Oxygen, dissolved [DO] | 1 | 46 | 37 | August 31, 2025 | 80% over the limit |
| Coliform, fecal general | 0 | 27 | 27 | September 30, 2017 | 50,350% over the limit |
| E. coli | 2 | 9 | 9 | May 31, 2025 | 33,091% over the limit |
| pH | 2 | 12 | 4 | September 30, 2020 | |
| Flow, in conduit or thru treatment plant | 2 | 13 | 0 | ||
| Chlorine, total residual | 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 |
|---|---|---|
| April 18, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| April 18, 2024 | Monitoring Violations - No Flow Measurement Device | 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 OK0036081 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.