Clean Water Act discharge permit · NPDES LA0126641
EXTEX OPERATING COMPANY-SHIP SHOAL 45 PRODUCTION FACILITY, Houma, LA: NPDES LA0126641 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 36Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
EXTEX OPERATING COMPANY-SHIP SHOAL 45 PRODUCTION FACILITY, held by EXTEX OPERATING COMPANY - SHIP SHOAL 45 PRODUCTION FACILITY, holds NPDES permit LA0126641. EPA’s file records it issued February 21, 2024 and expiring March 31, 2029. 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 | EXTEX OPERATING COMPANY-SHIP SHOAL 45 PRODUCTION FACILITY |
|---|---|
| Permittee as filed | EXTEX OPERATING COMPANY - SHIP SHOAL 45 PRODUCTION FACILITY |
| NPDES ID | LA0126641 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 21, 2024 |
| Expiration date | March 31, 2029 |
| Address | Houma, LA 70000 |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 37Pollutants on file
- 36Under a numeric limit
- 37With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Enterococci | 2 | 5 | 5 | June 30, 2023 | 99,999% over the limit |
| Oil & Grease | 5 | 39 | 2 | October 31, 2022 | 60% over the limit |
| Oil and grease | 0 | 3 | 1 | September 30, 2018 | 25% over the limit |
| Flow, in conduit or thru treatment plant | 15 | 39 | 0 | ||
| Benzene | 3 | 23 | 0 | ||
| Thallium, total [as Tl] | 2 | 20 | 0 | ||
| Phenolics, total recoverable | 2 | 18 | 0 | ||
| Produced water, Radium 226, total | 2 | 14 | 0 | ||
| Produced water, Radium 228, total | 2 | 14 | 0 | ||
| Chlorine, total residual | 2 | 13 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 12 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Menidia | 2 | 12 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 12 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 2 | 12 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 12 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 12 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 12 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 12 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 12 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Menidia menidia | 2 | 12 | 0 | ||
| Lead, total [as Pb] | 3 | 11 | 0 | ||
| Critical Dilution | 4 | 8 | 0 | ||
| Solids, total suspended | 5 | 6 | 0 | ||
| pH | 4 | 4 | 0 | ||
| Thallium, calculated limit | 2 | 4 | 0 | ||
| Benzene, calculated limit | 2 | 2 | 0 | ||
| Lead, calculated limit | 2 | 2 | 0 | ||
| Phenol, calculated limit | 2 | 2 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopis bahia) | 2 | 2 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia menidia | 2 | 2 | 0 | ||
| NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia) | 2 | 2 | 0 | ||
| NOAEC Lethal Static Renewal 48HR Acute Menidia menidia | 2 | 2 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 2 | 2 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute Menidia menidia | 2 | 2 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 2 | 0 | ||
| Carbon, tot organic [TOC] | 1 | 1 | 0 | ||
| BTEX | 1 | 1 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 23, 2024 | Management Practice Violations - Failure to Develop Adequate SPCC Plan | ST6 |
| October 23, 2024 | Management Practice Violations - Failure to Implement SPCC Plan | ST6 |
| October 23, 2024 | Management Practice Violations - Improper Operation and Maintenance | 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 LA0126641 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.