Clean Water Act discharge permit · NPDES TX0144576
DIAMOND GREEN DIESEL, City Of Port Arthur, TX: NPDES TX0144576 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
DIAMOND GREEN DIESEL, held by GT LOGISTICS LLC, holds NPDES permit TX0144576, which discharges to Intracoastal Waterway Tidal. EPA’s file records it issued December 8, 2023 and expiring December 8, 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 | DIAMOND GREEN DIESEL |
|---|---|
| Permittee as filed | GT LOGISTICS LLC |
| NPDES ID | TX0144576 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 8, 2023 |
| Expiration date | December 8, 2028 |
| Address | City Of Port Arthur, TX 7764 |
| Receiving water | Intracoastal Waterway Tidal |
| Subwatershed | Salt Bayou (HUC 120402010300) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 6Pollutants on file
- 6Under a numeric limit
- 2With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Oxygen demand, chem. [high level] [COD] | 1 | 2 | 2 | April 30, 2026 | 14% over the limit |
| pH | 2 | 1 | 1 | April 30, 2026 | |
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| Copper, total [as Cu] | 2 | 0 | 0 | ||
| Zinc, total [as Zn] | 2 | 0 | 0 | ||
| Oil & Grease | 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 |
|---|---|---|
| January 29, 2026 | Permit Violations - Violation Specified in Comment | 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 TX0144576 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.