Clean Water Act discharge permit · NPDES LA0003751
TOTALENERGIES PETROCHEMICALS & REFINING USA INC.- COSMAR STYRENE MONOMER PLANT, Carville, LA: NPDES LA0003751 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 75Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
TOTALENERGIES PETROCHEMICALS & REFINING USA INC.- COSMAR STYRENE MONOMER PLANT, held by TotalEnergies Petrochemicals & Refining USA Inc.- CosMar Styrene Monomer Plant, holds NPDES permit LA0003751, which discharges to Seg 070301, Mississippi River. EPA’s file records it issued September 24, 2018 and expiring September 23, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | TOTALENERGIES PETROCHEMICALS & REFINING USA INC.- COSMAR STYRENE MONOMER PLANT |
|---|---|
| Permittee as filed | TotalEnergies Petrochemicals & Refining USA Inc.- CosMar Styrene Monomer Plant |
| NPDES ID | LA0003751 |
| 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 | September 24, 2018 |
| Expiration date | September 23, 2023 |
| Address | Carville, LA 70721 |
| Receiving water | SEG 070301, MISSISSIPPI RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Claiborne Island (HUC 080701000105) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 80Pollutants on file
- 75Under a numeric limit
- 21With 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; the 60 with the most exceedances of 80 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Toluene | 3 | 11 | 8 | March 31, 2021 | 61,171% over the limit |
| Benzene | 4 | 10 | 5 | June 30, 2015 | 79,981% over the limit |
| Ethylbenzene | 3 | 15 | 4 | March 31, 2021 | 7,557% over the limit |
| pH range excursions, > 60 minutes | 1 | 7 | 4 | September 30, 2012 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 9 | 2 | June 30, 2015 | 27% over the limit |
| Zinc, total [as Zn] | 5 | 6 | 1 | March 31, 2006 | 12% over the limit |
| Flow, in conduit or thru treatment plant | 12 | 16 | 0 | ||
| pH | 6 | 8 | 0 | ||
| Phenol | 4 | 6 | 0 | ||
| Solids, total suspended | 5 | 4 | 0 | ||
| pH range excursions, monthly total accum | 1 | 4 | 0 | ||
| Carbon, tot organic [TOC] | 2 | 3 | 0 | ||
| Oil and grease | 0 | 3 | 0 | ||
| Chromium, total [as Cr] | 2 | 2 | 0 | ||
| Lead, total [as Pb] | 1 | 2 | 0 | ||
| BTEX | 1 | 2 | 0 | ||
| Oil & Grease | 2 | 1 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 1 | 0 | ||
| Nitrogen, nitrite total [as N] | 0 | 1 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 1 | 0 | ||
| Phosphorus, total [as P] | 0 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 4 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 4 | 0 | 0 | ||
| Whole Effluent Toxicity - Retest #3 | 4 | 0 | 0 | ||
| Cycles Of Concentration | 3 | 0 | 0 | ||
| Chloride [as Cl] | 2 | 0 | 0 | ||
| Carbon tetrachloride | 2 | 0 | 0 | ||
| 1,2-Dichloroethane | 2 | 0 | 0 | ||
| Chloroform | 2 | 0 | 0 | ||
| Acenaphthylene | 2 | 0 | 0 | ||
| Acenaphthene | 2 | 0 | 0 | ||
| Acrylonitrile | 2 | 0 | 0 | ||
| Anthracene | 2 | 0 | 0 | ||
| Benzo[b]fluoranthene | 2 | 0 | 0 | ||
| Benzo[k]fluoranthene | 2 | 0 | 0 | ||
| Benzo[a]pyrene | 2 | 0 | 0 | ||
| Chlorobenzene | 2 | 0 | 0 | ||
| Chrysene | 2 | 0 | 0 | ||
| Diethyl phthalate | 2 | 0 | 0 | ||
| Dimethyl phthalate | 2 | 0 | 0 | ||
| Fluoranthene | 2 | 0 | 0 | ||
| Fluorene | 2 | 0 | 0 | ||
| Hexachlorobutadiene | 2 | 0 | 0 | ||
| Hexachloroethane | 2 | 0 | 0 | ||
| Methyl chloride [Chloromethane] | 2 | 0 | 0 | ||
| Methylene chloride | 2 | 0 | 0 | ||
| Nitrobenzene | 2 | 0 | 0 | ||
| Phenanthrene | 2 | 0 | 0 | ||
| Pyrene | 2 | 0 | 0 | ||
| Tetrachloroethylene | 2 | 0 | 0 | ||
| 1,1-Dichloroethane | 2 | 0 | 0 | ||
| 1,1-Dichloroethylene | 2 | 0 | 0 | ||
| 1,1,1-Trichloroethane | 2 | 0 | 0 | ||
| 1,1,2-Trichloroethane | 2 | 0 | 0 | ||
| Benzo[a]anthracene | 2 | 0 | 0 | ||
| 1,2-Dichlorobenzene | 2 | 0 | 0 | ||
| 1,2-Dichloropropane | 2 | 0 | 0 | ||
| trans-1,2-Dichloroethylene | 2 | 0 | 0 | ||
| 1,2,4-Trichlorobenzene | 2 | 0 | 0 | ||
| 1,3-Dichlorobenzene | 2 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES LA0003751.
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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.