Clean Water Act discharge permit · NPDES MTG490024
TMC INC - COSCIK PIT, Belgrade, MT: NPDES MTG490024 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
TMC INC - COSCIK PIT, held by TMC INC, holds NPDES permit MTG490024, which discharges to Dry Creek. EPA’s file records it issued January 16, 2020 and expiring October 31, 2024. 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 | TMC INC - COSCIK PIT |
|---|---|
| Permittee as filed | TMC INC |
| NPDES ID | MTG490024 |
| 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 |
| Issued | January 16, 2020 |
| Expiration date | October 31, 2024 |
| Address | Belgrade, MT 59714 |
| Receiving water | DRY CREEK |
| Subwatershed | Lower Hyalite Creek (HUC 100200081002) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 4Under a numeric limit
- 7With 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 |
|---|---|---|---|---|---|
| Turbidity | 0 | 21 | 0 | ||
| pH | 2 | 10 | 0 | ||
| Solids, total suspended | 2 | 8 | 0 | ||
| Flow rate | 0 | 6 | 0 | ||
| Oil and grease, hexane extr method | 1 | 5 | 0 | ||
| Oil and grease visual | 1 | 4 | 0 | ||
| Duration of discharge | 0 | 3 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG490024.
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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 27, 2017 | Monitoring Violations - Analysis not Conducted | 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.
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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 MTG490024 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.