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Clean Water Act discharge permit · NPDES MTR111462

FLATHEAD R - 3 M NW BIGFORK, Bigfork, MT: NPDES MTR111462 discharge permit, effluent exceedances, inspections, penalties

FLATHEAD R - 3 M NW BIGFORK, held by SLETTEN CONSTRUCTION COMPANY, holds NPDES permit MTR111462, which discharges to Flathead River. EPA’s file records it issued July 29, 2025 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.

Identity

Facility as filedFLATHEAD R - 3 M NW BIGFORK
Permittee as filedSLETTEN CONSTRUCTION COMPANY
NPDES IDMTR111462
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJuly 29, 2025
Expiration dateDecember 31, 2027
AddressBigfork, MT 59911
Receiving waterFLATHEAD RIVER
SubwatershedFlathead River-Rose Creek (HUC 170102080108)

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 MTR111462.

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

DateWhat EPA recordedAgency
April 9, 2026WW Storm Water Construction - Failure to properly operate and maintain BMPsST6
April 9, 2026WW Storm Water Construction - Failure to properly install/implement BMPsST6
October 6, 2025WW Storm Water Construction - Failure to properly operate and maintain BMPsST6
October 6, 2025WW Storm Water Construction - Failure to properly install/implement BMPsST6

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 MTR111462 there.

Nearby on the register

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

What this page shows

This public-records page covers NPDES permit MTR111462 for the FLATHEAD R - 3 M NW BIGFORK facility in Bigfork, MT, held by SLETTEN CONSTRUCTION COMPANY and discharging to the Flathead River within the Flathead River-Rose Creek subwatershed (HUC 170102080108). The permit is listed as Effective, issued July 29, 2025 and expiring December 31, 2027, under a construction stormwater program as a minor discharger. The page reports 0 pollutants on file, 0 under a numeric limit, 0 with a violation of any kind, and 0 with an effluent exceedance.