Clean Water Act discharge permit · NPDES LA0122475
AIR LIQUIDE LARGE INDUSTRIES US LP - TAFT ASU, Hahnville, LA: NPDES LA0122475 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
AIR LIQUIDE LARGE INDUSTRIES US LP - TAFT ASU, held by AIR LIQUIDE LARGE INDUSTRIES US LP, holds NPDES permit LA0122475. EPA’s file records it issued September 22, 2017 and expiring November 30, 2022. 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 | AIR LIQUIDE LARGE INDUSTRIES US LP - TAFT ASU |
|---|---|
| Permittee as filed | AIR LIQUIDE LARGE INDUSTRIES US LP |
| NPDES ID | LA0122475 |
| 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 | September 22, 2017 |
| Expiration date | November 30, 2022 |
| Address | Hahnville, LA 70057 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Bayou Fortier (HUC 080903010206) |
| SIC | 2813 – Industrial Gases |
| Other EPA IDs (FRS) | RCRA handler LAR000053504; ICIS-AIR source LA0000002208900093 |
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
- 5Pollutants on file
- 4Under a numeric limit
- 5With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| pH | 10 | 12 | 0 | ||
| Flow, in conduit or thru treatment plant | 10 | 12 | 0 | ||
| Oil & Grease | 9 | 12 | 0 | ||
| Carbon, tot organic [TOC] | 5 | 6 | 0 | ||
| Oil and grease | 0 | 6 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES LA0122475.
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 LA0122475.
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 LA0122475 there.
Nearby on the register
- Discharge permits in Hahnville
- Every permit record in Hahnville, A to Z
- Discharge permits in Louisiana
- Every permit record in Louisiana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.