Clean Water Act discharge permit · NPDES TX0125831
LINDE PORT ARTHUR HYDROGEN FACILITY, Port Arthur, TX: NPDES TX0125831 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
LINDE PORT ARTHUR HYDROGEN FACILITY, held by LINDE INC, holds NPDES permit TX0125831, which discharges to Seg No 0702 Neches-Trinity Coastal. EPA’s file records it issued May 13, 2019 and expiring May 13, 2024. 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 | LINDE PORT ARTHUR HYDROGEN FACILITY |
|---|---|
| Permittee as filed | LINDE INC |
| NPDES ID | TX0125831 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 13, 2019 |
| Expiration date | May 13, 2024 |
| Address | Port Arthur, TX 77641 |
| Receiving water | SEG NO 0702 NECHES-TRINITY COASTAL |
| Subwatershed | Salt Bayou (HUC 120402010300) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 23Pollutants on file
- 5Under a numeric limit
- 23With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 2 | 20 | 4 | July 31, 2026 | 208% over the limit |
| Oil & Grease | 2 | 16 | 2 | January 31, 2015 | 96% over the limit |
| pH | 2 | 13 | 1 | November 30, 2004 | |
| Temperature, water deg. fahrenheit | 0 | 13 | 1 | September 30, 2016 | 0% over the limit |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 0 | 17 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 0 | 17 | 0 | ||
| Carbon, tot organic [TOC] | 2 | 15 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 15 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 15 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 0 | 14 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 13 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 0 | 10 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 8 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 8 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 6 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 6 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 4 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 0 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 0 | 2 | 0 | ||
| Whole effluent toxicity - retest #1 | 0 | 1 | 0 | ||
| Whole effluent toxicity - retest #2 | 0 | 1 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 13, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| May 30, 2018 | 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 TX0125831 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.