Clean Water Act discharge permit · NPDES LA0005983
OCCIDENTAL CHEMICAL CORP-TAFT PLANT, Taft, LA: NPDES LA0005983 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 28Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
OCCIDENTAL CHEMICAL CORP-TAFT PLANT, held by Occidental Chemical Corporation, holds NPDES permit LA0005983, which discharges to Mississippi River. EPA’s file records it issued September 16, 2016 and expiring October 31, 2021. 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 | OCCIDENTAL CHEMICAL CORP-TAFT PLANT |
|---|---|
| Permittee as filed | Occidental Chemical Corporation |
| NPDES ID | LA0005983 |
| 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 16, 2016 |
| Expiration date | October 31, 2021 |
| Address | Taft, LA 70057 |
| Receiving water | MISSISSIPPI RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mississippi River-Bonnet Carre Spillway (HUC 080901000101) |
| SIC | 2812 – Alkalies And Chlorine |
| Other EPA IDs (FRS) | RCRA handler LAD003913316; ICIS-AIR source LA0000002208900007 |
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
- 28Under a numeric limit
- 26With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 101 | 15 | December 31, 2005 | 301% over the limit |
| Coliform, fecal general | 2 | 98 | 4 | June 30, 2021 | 99,999% over the limit |
| pH range excursions, > 60 minutes | 1 | 4 | 4 | September 30, 2021 | 2,147,483,650% over the limit |
| pH range excursions, monthly total accum | 1 | 4 | 4 | September 30, 2021 | 1,833% over the limit |
| Nickel, total [as Ni] | 2 | 5 | 1 | May 31, 2000 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 14 | 104 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 98 | 0 | ||
| pH | 8 | 8 | 0 | ||
| Copper, total [as Cu] | 4 | 6 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 4 | 6 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 4 | 4 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 4 | 4 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 4 | 4 | 0 | ||
| Oil & Grease | 5 | 3 | 0 | ||
| Carbon, tot organic [TOC] | 3 | 3 | 0 | ||
| Lead, total [as Pb] | 6 | 2 | 0 | ||
| Chloride [as Cl] | 2 | 2 | 0 | ||
| Zinc, total [as Zn] | 2 | 2 | 0 | ||
| Chlorine, total residual | 2 | 2 | 0 | ||
| Chromium, total [as Cr] | 0 | 2 | 0 | ||
| Cycles Of Concentration | 0 | 2 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 2 | 1 | 0 | ||
| 1,2-Dichloroethane | 1 | 1 | 0 | ||
| Chloroform | 1 | 1 | 0 | ||
| 1,1,2,2-Tetrachloroethane | 1 | 1 | 0 | ||
| Trichloroethylene | 1 | 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 | ||
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | 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 LA0005983.
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 LA0005983 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.