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Clean Water Act discharge permit · NPDES MTR111776

COLUMBIA MINE PROJECT, Lincoln, MT: NPDES MTR111776 discharge permit, effluent exceedances, inspections, penalties

COLUMBIA MINE PROJECT, held by GREAT PLAINS MINING LLC, holds NPDES permit MTR111776, which discharges to Seven-Up-Pete Creek. EPA’s file records it issued May 7, 2026 and expiring December 31, 2027. 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.

What the register holds for COLUMBIA MINE PROJECT: its NPDES ID, its permit type and status, its dates, its address in Lincoln, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR111776.

Identity

Facility as filedCOLUMBIA MINE PROJECT
Permittee as filedGREAT PLAINS MINING LLC
NPDES IDMTR111776
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedMay 7, 2026
Expiration dateDecember 31, 2027
AddressLincoln, MT 59639
Receiving waterSEVEN-UP-PETE CREEK
SubwatershedHumbug Creek (HUC 170102030301)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR111776.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTR111776.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MTR111776.

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  • One permit holder — $99/month
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How we handle your data → Privacy

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 MTR111776 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

The COLUMBIA MINE PROJECT is one of 1 NPDES permits in the Humbug Creek subwatershed, the only one in that watershed, and it sits among 133 storm water construction permits in Lewis and Clark County, with 91.0% of those issued earlier than this one. Across the county's 145 storm water construction permits, 13.1% carry a violation on file, while this permit has no pollutants under a numeric limit and no effluent exceedances, both recorded as 0.