Clean Water Act discharge permit · NPDES MT0029891
BARRETTS MINERALS INC, Dillon, MT: NPDES MT0029891 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
BARRETTS MINERALS INC holds NPDES permit MT0029891, which discharges to Left Fork Stone Creek. EPA’s file records it issued August 22, 2006 and expiring September 30, 2011. 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 | BARRETTS MINERALS INC |
|---|---|
| Permittee as filed | BARRETTS MINERALS INC |
| NPDES ID | MT0029891 |
| 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 | August 22, 2006 |
| Expiration date | September 30, 2011 |
| Issuing agency | MONTANA DEQ |
| Address | Dillon, MT 59725 |
| Receiving water | LEFT FORK STONE CREEK |
| Subwatershed | Stone Creek (HUC 100200020604) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 9Under a numeric limit
- 10With a violation of any kind
- 3With 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 | 4 | 44 | 34 | January 31, 2026 | 956% over the limit |
| pH | 4 | 14 | 8 | January 31, 2025 | |
| Nitrogen, total [as N] | 2 | 8 | 2 | July 31, 2006 | 23% over the limit |
| Nitrite + Nitrate total [as N] | 2 | 6 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 5 | 0 | ||
| Phosphorus, total [as P] | 1 | 4 | 0 | ||
| Iron, total [as Fe] | 0 | 4 | 0 | ||
| Flow rate | 4 | 2 | 0 | ||
| Oil and grease, hexane extr method | 1 | 2 | 0 | ||
| Selenium, total recoverable | 1 | 1 | 0 |
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 |
|---|---|---|
| June 11, 2024 | Reporting Violations - Improper/ Incorrect Reporting | 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 MT0029891 there.
Nearby on the register
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- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.