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Clean Water Act discharge permit · NPDES MT0031852

OTTER CREEK COAL LLC - OTTER CREEK MINE, Ashland, MT: NPDES MT0031852 discharge permit, effluent exceedances, inspections, penalties

OTTER CREEK COAL LLC - OTTER CREEK MINE, held by OTTER CREEK COAL LLC, holds NPDES permit MT0031852, which discharges to Otter Creek. 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 OTTER CREEK COAL LLC - OTTER CREEK MINE: its NPDES ID, its permit type and status, its its address in Ashland, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MT0031852.

Identity

Facility as filedOTTER CREEK COAL LLC - OTTER CREEK MINE
Permittee as filedOTTER CREEK COAL LLC
NPDES IDMT0031852
Permit statusNot needed
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
AddressAshland, MT 59106
Receiving waterOTTER CREEK
Receiving water impaired303(D) Listed
SubwatershedOtter Creek-Newell Creek (HUC 100901020305)

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 MT0031852.

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 MT0031852.

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, MT0031852.

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How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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 MT0031852 there.

Nearby on the register

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