Clean Water Act discharge permit · NPDES MTG071307
SUNSET MINE DEWATERING, Red Lodge, MT: NPDES MTG071307 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
SUNSET MINE DEWATERING, held by MTDEQ/AML, holds NPDES permit MTG071307, which discharges to Rock Creek. EPA’s file records it issued July 26, 2024 and expiring February 28, 2025. 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 | SUNSET MINE DEWATERING |
|---|---|
| Permittee as filed | MTDEQ/AML |
| NPDES ID | MTG071307 |
| 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 | July 26, 2024 |
| Expiration date | February 28, 2025 |
| Address | Red Lodge, MT 59068 |
| Receiving water | ROCK CREEK |
| Subwatershed | Rock Creek-Stanley Draw (HUC 100700060906) |
| SIC | 1542 – Nonresidential Construction |
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
- 4Pollutants on file
- 4Under a numeric limit
- 4With 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 | 2 | 2 | 0 | ||
| Oil & Grease | 1 | 1 | 0 | ||
| Oil and grease visual | 1 | 1 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 1 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG071307.
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 MTG071307.
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 MTG071307 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.