Clean Water Act discharge permit · NPDES MTR000502
JTL GROUP PATTEE CANYON PIT, Missoula, MT: NPDES MTR000502 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 2Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
JTL GROUP PATTEE CANYON PIT, held by JTL GROUP INC DBA KNIFE RIVER MISSOULA, holds NPDES permit MTR000502, which discharges to Canyon Creek. EPA’s file records it issued August 8, 2018 and expiring January 31, 2023. 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 | JTL GROUP PATTEE CANYON PIT |
|---|---|
| Permittee as filed | JTL GROUP INC DBA KNIFE RIVER MISSOULA |
| NPDES ID | MTR000502 |
| 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 | August 8, 2018 |
| Expiration date | January 31, 2023 |
| Address | Missoula, MT 59803 |
| Receiving water | CANYON CREEK |
| Subwatershed | Bitterroot River-Hayes Creek (HUC 170102051603) |
| SIC | 1442 – Construction Sand And Gravel |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 2Pollutants on file
- 2Under a numeric limit
- 2With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 1 | 2 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 2 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR000502.
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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 12, 2023 | WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
| May 12, 2023 | WW Storm Water Non-Construction - Failure to properly install/implement BMPs | ST6 |
| May 12, 2023 | WW Storm Water Non-Construction - Failure to properly operate and maintain BMPs | ST6 |
| May 12, 2023 | WW Storm Water Non-Construction - Failure to Conduct Inspections | ST6 |
| May 12, 2023 | WW Storm Water Non-Construction - Failure to Maintain Records | 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 MTR000502 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.