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Clean Water Act discharge permit · NPDES MTG070931

LOWER YELLOWSTONE FISH BYPASS CHANNEL & REPLACEMENT WEIR, Glendive, MT: NPDES MTG070931 discharge permit, effluent exceedances, inspections, penalties

LOWER YELLOWSTONE FISH BYPASS CHANNEL & REPLACEMENT WEIR, held by Ames Construction, holds NPDES permit MTG070931, which discharges to Yellowstone River. EPA’s file records it issued May 7, 2019 and expiring February 29, 2020. 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 LOWER YELLOWSTONE FISH BYPASS CHANNEL & REPLACEMENT WEIR: its NPDES ID, its permit type and status, its dates, its address in Glendive, Montana, its receiving water, and 5 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG070931.

Identity

Facility as filedLOWER YELLOWSTONE FISH BYPASS CHANNEL & REPLACEMENT WEIR
Permittee as filedAmes Construction
NPDES IDMTG070931
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedMay 7, 2019
Expiration dateFebruary 29, 2020
AddressGlendive, MT 59330
Receiving waterYELLOWSTONE RIVER
SubwatershedYellowstone River-Stipek (HUC 101000041903)

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
Turbidity1800
Oil & Grease800
Oil and grease visual800
Outfall observation,visual, y/n response800
Flowing, Receiving Stream600

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG070931.

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 MTG070931.

Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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, MTG070931.

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

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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 MTG070931 there.

Nearby on the register

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