Clean Water Act discharge permit · NPDES OK0036161
TERRA INTERNATIONAL (OKLAHOMA) INC-WOODWARD, Woodward, OK: NPDES OK0036161 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 33Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
TERRA INTERNATIONAL (OKLAHOMA) INC-WOODWARD, held by Terra International (Oklahoma) -Woodward, holds NPDES permit OK0036161, which discharges to 720500010140 N Canadian R. EPA’s file records it issued April 22, 2015 and expiring June 30, 2020. 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 | TERRA INTERNATIONAL (OKLAHOMA) INC-WOODWARD |
|---|---|
| Permittee as filed | Terra International (Oklahoma) -Woodward |
| NPDES ID | OK0036161 |
| 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 | April 22, 2015 |
| Expiration date | June 30, 2020 |
| Issuing agency | ODEQ |
| Address | Woodward, OK 73801 |
| Receiving water | 720500010140 N Canadian R |
| Subwatershed | Sand Creek-North Canadian River (HUC 111003010202) |
| Other EPA IDs (FRS) | RCRA handler OKD079984480; ICIS-AIR source OK0000004015300009 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 34Pollutants on file
- 33Under a numeric limit
- 21With a violation of any kind
- 5With 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, carbonaceous [5 day, 20 C] | 12 | 29 | 17 | July 31, 2017 | 297% over the limit |
| Solids, total suspended | 4 | 61 | 5 | March 31, 2013 | 67% over the limit |
| pH | 6 | 16 | 2 | December 31, 2005 | |
| Solids, total dissolved- 180 deg. C | 3 | 10 | 1 | June 30, 2008 | 20% over the limit |
| Oxygen, dissolved [DO] | 2 | 2 | 1 | July 31, 2017 | 7% over the limit |
| Nitrogen, ammonia total [as N] | 9 | 67 | 0 | ||
| Phosphorus, total [as P] | 4 | 44 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 2 | 26 | 0 | ||
| Oil & Grease | 0 | 24 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 1 | 10 | 0 | ||
| Selenium, total [as Se] | 12 | 6 | 0 | ||
| Oil and grease, hexane extr method | 6 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 5 | 0 | ||
| Solids, total dissolved | 4 | 4 | 0 | ||
| %Mortality Static Renewal 7Day Chronic Pimephales Promelas | 1 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 1 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 1 | 2 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 2 | 0 | ||
| Oxidants, total residual | 1 | 1 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 1 | 1 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 1 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 2 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 2 | 0 | 0 | ||
| LC50 Static Renewal 48Hr Acute Daphnia pulex | 1 | 0 | 0 | ||
| LC50 Static Renewal 48Hr Acute Pimephales promelas | 1 | 0 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 0 | 0 | ||
| LC50 Pass/Fail Static Renewal 48Hr Acute Daphnia Pulex | 1 | 0 | 0 | ||
| LC50 Static Renewal 48Hr Acute Pimephales promelas | 1 | 0 | 0 | ||
| %Mortality Static Renewal 48Hr Acute Daphnia Pulex | 1 | 0 | 0 | ||
| % Mortality Static Renewal 48 Hr Pimephales promelas or use TJA6C | 1 | 0 | 0 | ||
| %Mortality 7Day Chronic Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 27, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES OK0036161.
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 OK0036161.
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, OK0036161.
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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 OK0036161 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.