Clean Water Act discharge permit · NPDES COR900849
MATHESON TRI GAS, Longmont, CO: NPDES COR900849 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 3Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MATHESON TRI GAS, held by Matheson Tri Gas Inc, holds NPDES permit COR900849, which discharges to St Vrain Creek / South Platte River. EPA’s file records it issued June 19, 2012 and expiring June 30, 2017. 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 | MATHESON TRI GAS |
|---|---|
| Permittee as filed | Matheson Tri Gas Inc |
| NPDES ID | COR900849 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | June 19, 2012 |
| Expiration date | June 30, 2017 |
| Address | Longmont, CO 80501 |
| Receiving water | St Vrain Creek / South Platte River |
| Subwatershed | Lower Left Hand Creek (HUC 101900050304) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 3Pollutants on file
- 3Under a numeric limit
- 3With 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 |
|---|---|---|---|---|---|
| Nitrite + Nitrate total [as N] | 1 | 7 | 0 | ||
| Iron, total [as Fe] | 1 | 7 | 0 | ||
| Aluminum, total [as Al] | 1 | 7 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COR900849.
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 COR900849.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 COR900849 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.