Clean Water Act discharge permit · NPDES LA0056171
OCCIDENTAL CHEMICAL CORPORATION -CONVENT PLANT, Convent, LA: NPDES LA0056171 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 87Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
OCCIDENTAL CHEMICAL CORPORATION -CONVENT PLANT, held by OCCIDENTAL CHEM CORP-CONVENT, holds NPDES permit LA0056171, which discharges to Mississippi River. EPA’s file records it issued October 5, 2016 and expiring October 31, 2021. 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 | OCCIDENTAL CHEMICAL CORPORATION -CONVENT PLANT |
|---|---|
| Permittee as filed | OCCIDENTAL CHEM CORP-CONVENT |
| NPDES ID | LA0056171 |
| 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 | October 5, 2016 |
| Expiration date | October 31, 2021 |
| Address | Convent, LA 70723 |
| Receiving water | 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
- 89Pollutants on file
- 87Under a numeric limit
- 26With 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; the 60 with the most exceedances of 89 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 2 | 6 | 6 | October 31, 2024 | 399% over the limit |
| pH | 10 | 6 | 2 | December 31, 2017 | |
| Coliform, fecal general | 2 | 5 | 1 | March 31, 2013 | 26% over the limit |
| Flow, in conduit or thru treatment plant | 14 | 28 | 0 | ||
| Chlorine, total residual | 2 | 20 | 0 | ||
| Nickel, total [as Ni] | 2 | 18 | 0 | ||
| Chloroform | 6 | 17 | 0 | ||
| 1,2-Dichloroethane | 4 | 14 | 0 | ||
| Tetrachloroethylene | 4 | 4 | 0 | ||
| 1,2-Dichloropropane | 4 | 4 | 0 | ||
| Trichloroethylene | 4 | 4 | 0 | ||
| Lead, total [as Pb] | 6 | 2 | 0 | ||
| Solids, total suspended | 4 | 2 | 0 | ||
| Cyanide, total [as CN] | 4 | 2 | 0 | ||
| Zinc, total [as Zn] | 4 | 2 | 0 | ||
| Carbon tetrachloride | 4 | 2 | 0 | ||
| Methylene chloride | 4 | 2 | 0 | ||
| 1,1,1-Trichloroethane | 4 | 2 | 0 | ||
| 1,1,2-Trichloroethane | 4 | 2 | 0 | ||
| Phosphorus, total [as P] | 2 | 2 | 0 | ||
| Mercury, total [as Hg] | 2 | 2 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 2 | 2 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | 2 | 2 | 0 | ||
| 1,3-Dichloropropylene | 0 | 2 | 0 | ||
| Carbon, tot organic [TOC] | 4 | 1 | 0 | ||
| Oil and grease | 0 | 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 | ||
| Benzene | 6 | 0 | 0 | ||
| Oil & Grease | 4 | 0 | 0 | ||
| Chromium, total [as Cr] | 4 | 0 | 0 | ||
| Toluene | 4 | 0 | 0 | ||
| Acenaphthylene | 4 | 0 | 0 | ||
| Acenaphthene | 4 | 0 | 0 | ||
| Acrylonitrile | 4 | 0 | 0 | ||
| Anthracene | 4 | 0 | 0 | ||
| Benzo[b]fluoranthene | 4 | 0 | 0 | ||
| Benzo[k]fluoranthene | 4 | 0 | 0 | ||
| Benzo[a]pyrene | 4 | 0 | 0 | ||
| Chlorobenzene | 4 | 0 | 0 | ||
| Chrysene | 4 | 0 | 0 | ||
| Diethyl phthalate | 4 | 0 | 0 | ||
| Dimethyl phthalate | 4 | 0 | 0 | ||
| Ethylbenzene | 4 | 0 | 0 | ||
| Fluoranthene | 4 | 0 | 0 | ||
| Fluorene | 4 | 0 | 0 | ||
| Hexachlorobutadiene | 4 | 0 | 0 | ||
| Hexachloroethane | 4 | 0 | 0 | ||
| Methyl chloride [Chloromethane] | 4 | 0 | 0 | ||
| Nitrobenzene | 4 | 0 | 0 | ||
| Phenanthrene | 4 | 0 | 0 | ||
| Pyrene | 4 | 0 | 0 | ||
| 1,1-Dichloroethane | 4 | 0 | 0 | ||
| 1,1-Dichloroethylene | 4 | 0 | 0 | ||
| Benzo[a]anthracene | 4 | 0 | 0 | ||
| 1,2-Dichlorobenzene | 4 | 0 | 0 | ||
| trans-1,2-Dichloroethylene | 4 | 0 | 0 | ||
| 1,2,4-Trichlorobenzene | 4 | 0 | 0 | ||
| 1,3-Dichlorobenzene | 4 | 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 LA0056171.
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.