Clean Water Act discharge permit · NPDES GMG29062Y
CHEVRON USA, INC. DECOMMISSIONING, Covington, LA: NPDES GMG29062Y discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 33Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
CHEVRON USA, INC. DECOMMISSIONING, held by CHEVRON USA, INC. Decommissioning, holds NPDES permit GMG29062Y. EPA’s file records it issued March 13, 2024 and expiring May 10, 2028. 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 | CHEVRON USA, INC. DECOMMISSIONING |
|---|---|
| Permittee as filed | CHEVRON USA, INC. Decommissioning |
| NPDES ID | GMG29062Y |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 13, 2024 |
| Expiration date | May 10, 2028 |
| Issuing agency | U.S. EPA |
| Address | Covington, LA 70433 |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 33Pollutants on file
- 33Under a numeric limit
- 1With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Deck drainage, free oil | 97 | 1 | 1 | April 30, 2026 | 2,147,483,650% over the limit |
| Critical Dilution | 752 | 0 | 0 | ||
| Flow | 388 | 0 | 0 | ||
| Whole Effluent Toxicity [WET] - M. beryllina | 291 | 0 | 0 | ||
| Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia) | 291 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 279 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina | 279 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 279 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 279 | 0 | 0 | ||
| Misc. free oil in Western GOM, OCS | 194 | 0 | 0 | ||
| Well fluids, oil & grease | 194 | 0 | 0 | ||
| NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia) | 194 | 0 | 0 | ||
| NOAEC Lethal Static Renewal 48HR Acute Menidia beryllina | 194 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 182 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina | 182 | 0 | 0 | ||
| Miscellaneous Discharge Toxicity [Subsea Discharges] [Americamysis bahia (Mysidopsis bahia)] | 97 | 0 | 0 | ||
| Miscellaneous Discharge Toxicity [Subsea Discharges] [Menidia beryllina] | 97 | 0 | 0 | ||
| Miscellaneous Discharges [Pipeline Brine] [Free Oil] | 97 | 0 | 0 | ||
| Miscellaneous Discharges [Pipeline Brine] [Oil & Grease] | 97 | 0 | 0 | ||
| Well fluids, free oil | 97 | 0 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 97 | 0 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 97 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 97 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina | 97 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 97 | 0 | 0 | ||
| LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina | 97 | 0 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 85 | 0 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Menidia beryllina | 85 | 0 | 0 | ||
| Sanitary Waste Inspection | 29 | 0 | 0 | ||
| Sanitary Waste Inspection Conducted | 29 | 0 | 0 | ||
| Sanitary waste, residual chlorine | 29 | 0 | 0 | ||
| Sanitary waste, solids | 29 | 0 | 0 | ||
| Domestic waste, foam and floating solids | 29 | 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 GMG29062Y.
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 GMG29062Y there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.