Clean Water Act discharge permit · NPDES LA0094587
MATHESON TRI-GAS, INC., Westlake, LA: NPDES LA0094587 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MATHESON TRI-GAS, INC. holds NPDES permit LA0094587, which discharges to Bayou Verdine-Calcasieu River. EPA’s file records it issued October 24, 2008 and expiring November 30, 2013. 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.
What the register holds for MATHESON TRI-GAS, INC.: its NPDES ID, its permit type and status, its dates, its address in Westlake, Louisiana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES LA0094587.
Identity
| Facility as filed | MATHESON TRI-GAS, INC. |
|---|---|
| Permittee as filed | MATHESON TRI-GAS, INC. |
| NPDES ID | LA0094587 |
| 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 | October 24, 2008 |
| Expiration date | November 30, 2013 |
| Address | Westlake, LA 70669 |
| Receiving water | BAYOU VERDINE-CALCASIEU RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Bayou Verdine-Calcasieu River (HUC 080802060302) |
| Other EPA IDs (FRS) | RCRA handler LAR000013227 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES LA0094587.
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 LA0094587.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, LA0094587.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 LA0094587 there.
Nearby on the register
- Discharge permits in Westlake
- Every permit record in Westlake, A to Z
- Discharge permits in Louisiana
- Every permit record in Louisiana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.