Clean Water Act discharge permit · NPDES MTR300157
ASARCO - METG - UPPER BLACKFOOT MINING COMPLEX, Lincoln Division, MT: NPDES MTR300157 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ASARCO - METG - UPPER BLACKFOOT MINING COMPLEX, held by ASARCO LLC, holds NPDES permit MTR300157, which discharges to Mike Horse Creek. EPA’s file records it issued March 5, 2003 and expiring November 16, 2007. 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 | ASARCO - METG - UPPER BLACKFOOT MINING COMPLEX |
|---|---|
| Permittee as filed | ASARCO LLC |
| NPDES ID | MTR300157 |
| 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 | March 5, 2003 |
| Expiration date | November 16, 2007 |
| Issuing agency | MONTANA DEQ |
| Address | Lincoln Division, MT 59639 |
| Receiving water | MIKE HORSE CREEK |
| Subwatershed | Blackfoot River-Anaconda Creek (HUC 170102030202) |
| SIC | 1031 – Lead And Zinc Ores |
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
- 1Pollutants on file
- 0Under a numeric limit
- 1With 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 |
|---|---|---|---|---|---|
| Silver total recoverable | 0 | 2 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR300157.
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 MTR300157.
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 MTR300157 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.