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Clean Water Act discharge permit · NPDES MTR109402

OLSON NORTH #2 PI SITE, Cascade, MT: NPDES MTR109402 discharge permit, effluent exceedances, inspections, penalties

OLSON NORTH #2 PI SITE, held by MK WEEDEN CONSTRUCTION INC, holds NPDES permit MTR109402, which discharges to Missouri River. EPA’s file records it issued March 14, 2022 and expiring December 31, 2022. 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 OLSON NORTH #2 PI SITE: its NPDES ID, its permit type and status, its dates, its address in Cascade, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR109402.

Identity

Facility as filedOLSON NORTH #2 PI SITE
Permittee as filedMK WEEDEN CONSTRUCTION INC
NPDES IDMTR109402
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedMarch 14, 2022
Expiration dateDecember 31, 2022
AddressCascade, MT 59421
Receiving waterMISSOURI RIVER
SubwatershedMissouri River-Lower Chestnut Valley (HUC 100301020608)

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 MTR109402.

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 MTR109402.

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 MTR109402 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 MTR109402 for OLSON NORTH #2 PI SITE in Cascade, MT, held by MK WEEDEN CONSTRUCTION INC, which discharges to the MISSOURI RIVER under a construction stormwater program. The permit is listed as Effective, with a Minor discharger class, 0 pollutants under a numeric limit, and 0 pollutants with an effluent exceedance, and it was issued March 14, 2022 and expires December 31, 2022.