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Clean Water Act discharge permit · NPDES MTR108236

JUNCTION S - 437 - N & S, Toston, MT: NPDES MTR108236 discharge permit, effluent exceedances, inspections, penalties

JUNCTION S - 437 - N & S, held by Montana Department of Transportation, holds NPDES permit MTR108236, which discharges to Warm Springs Creek. EPA’s file records it issued February 18, 2020 and expiring December 31, 2022. 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 filedJUNCTION S - 437 - N & S
Permittee as filedMontana Department of Transportation
NPDES IDMTR108236
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedFebruary 18, 2020
Expiration dateDecember 31, 2022
AddressToston, MT 59643
Receiving waterWARM SPRINGS CREEK
SubwatershedWarm Springs Creek (HUC 100301010605)
SIC1611 – Highway And Street Construction

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

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR108236.

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
August 5, 2020WW Storm Water Construction - Failure to Implement SWPPP/SWMPST6
August 5, 2020WW Storm Water Construction - Failure to Maintain RecordsST6
August 5, 2020WW Storm Water Construction - Failure to Conduct InspectionsST6
August 5, 2020WW Storm Water Construction - Failure to properly operate and maintain BMPsST6
August 5, 2020WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMPST6
August 5, 2020WW 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 MTR108236 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers the Clean Water Act NPDES permit MTR108236 held by Montana Department of Transportation for JUNCTION S - 437 - N & S in Toston, MT, which discharges to Warm Springs Creek within watershed HUC 100301010605. The permit is listed as Effective and issued February 18, 2020, with an expiration date of December 31, 2022, and the page reports 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.