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Clean Water Act discharge permit · NPDES MTG071459

MTR111780_WEAVER LS AND GS_DEWATERING, Belgrade, MT: NPDES MTG071459 discharge permit, effluent exceedances, inspections, penalties

MTR111780_WEAVER LS AND GS_DEWATERING, held by CK May Excavating, Inc., holds NPDES permit MTG071459, which discharges to Gibson Creek. EPA’s file records it issued July 21, 2026 and expiring April 30, 2030. 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 MTR111780_WEAVER LS AND GS_DEWATERING: its NPDES ID, its permit type and status, its dates, its address in Belgrade, Montana, its receiving water, and 6 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG071459.

Identity

Facility as filedMTR111780_WEAVER LS AND GS_DEWATERING
Permittee as filedCK May Excavating, Inc.
NPDES IDMTG071459
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJuly 21, 2026
Expiration dateApril 30, 2030
AddressBelgrade, MT 59714
Receiving waterGIBSON CREEK
SubwatershedEast Gallatin River-Nixon Gulch (HUC 100200081303)

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

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Turbidity200
Oil & Grease100
Duration100
Flowing, Receiving Stream100
Oil and grease visual100
Outfall observation,visual, y/n response100

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG071459.

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 MTG071459.

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 MTG071459 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 MTG071459, held by CK May Excavating, Inc. for the facility MTR111780_WEAVER LS AND GS_DEWATERING in Belgrade, MT, which discharges to Gibson Creek. The permit is listed as Effective with a Minor discharger class, issued July 21, 2026 and expiring April 30, 2030, and the page shows 6 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.