Clean Water Act discharge permit · NPDES LA0006041
EQUILON ENTERPRISES LLC - SHELL OIL PRODUCTS US - CONVENT REFINERY, Convent, LA: NPDES LA0006041 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 29Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
EQUILON ENTERPRISES LLC - SHELL OIL PRODUCTS US - CONVENT REFINERY, held by Equilon Enterprises LLC- Convent Refinery, holds NPDES permit LA0006041, which discharges to Mississippi River/St. James Canal. EPA’s file records it issued August 25, 2017 and expiring August 24, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | EQUILON ENTERPRISES LLC - SHELL OIL PRODUCTS US - CONVENT REFINERY |
|---|---|
| Permittee as filed | Equilon Enterprises LLC- Convent Refinery |
| NPDES ID | LA0006041 |
| 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 | August 25, 2017 |
| Expiration date | August 24, 2022 |
| Address | Convent, LA 70723 |
| Receiving water | MISSISSIPPI RIVER/ST. JAMES CANAL |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Claiborne Island (HUC 080701000105) |
| SIC | 2911 – Petroleum Refining |
| Other EPA IDs (FRS) | RCRA handler LAD065485146; ICIS-AIR source LA0000002209300001 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 30Pollutants on file
- 29Under a numeric limit
- 16With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 11 | 11 | April 30, 2021 | 359% over the limit |
| pH range excursions, > 60 minutes | 1 | 4 | 4 | June 30, 2018 | 2,147,483,650% over the limit |
| pH range excursions, monthly total accum | 1 | 3 | 2 | January 31, 2013 | 539% over the limit |
| pH | 10 | 7 | 1 | December 31, 2013 | |
| Flow, in conduit or thru treatment plant | 10 | 6 | 0 | ||
| Alkalinity, phenolphthaline method | 4 | 2 | 0 | ||
| Phosphorus, total [as P] | 4 | 2 | 0 | ||
| Chromium, hexavalent [as Cr] | 4 | 2 | 0 | ||
| Chromium, total [as Cr] | 4 | 2 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 4 | 2 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 4 | 2 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | 2 | 2 | 0 | ||
| Lead, total [as Pb] | 1 | 2 | 0 | ||
| Oil and grease | 0 | 2 | 0 | ||
| Oil & Grease | 5 | 1 | 0 | ||
| Carbon, tot organic [TOC] | 3 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 8 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 8 | 0 | 0 | ||
| Whole Effluent Toxicity - Retest #3 | 8 | 0 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 4 | 0 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 4 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 0 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 0 | 0 | ||
| Sulfide, total [as S] | 2 | 0 | 0 | ||
| Phenolics, total recoverable | 2 | 0 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 2 | 0 | 0 | ||
| Benzene | 1 | 0 | 0 | ||
| BTEX | 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 |
|---|---|---|
| November 7, 2017 | Effluent Violations - Unapproved Bypass | 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.
Watch this permit
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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 LA0006041 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.