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Clean Water Act discharge permit · NPDES MTR000741

GIUNNANE OPENCUT SITE OPENCUT #1838, Sheridan, MT: NPDES MTR000741 discharge permit, effluent exceedances, inspections, penalties

GIUNNANE OPENCUT SITE OPENCUT #1838, held by MADISON COUNTY, holds NPDES permit MTR000741, which discharges to Thompson Ditch. EPA’s file records it issued May 9, 2022 and expiring January 31, 2023. 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 GIUNNANE OPENCUT SITE OPENCUT #1838: its NPDES ID, its permit type and status, its dates, its address in Sheridan, Montana, its receiving water, and 2 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR000741.

Identity

Facility as filedGIUNNANE OPENCUT SITE OPENCUT #1838
Permittee as filedMADISON COUNTY
NPDES IDMTR000741
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
ProgramIndustrial stormwater
IssuedMay 9, 2022
Expiration dateJanuary 31, 2023
AddressSheridan, MT 59749
Receiving waterTHOMPSON DITCH
SubwatershedBeaverhead River-Twin Bridges (HUC 100200020706)

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
Solids, total suspended100
Nitrite + Nitrate total [as N]100

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR000741.

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 MTR000741.

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, MTR000741.

Start the watch

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

How we handle your data → Privacy

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 MTR000741 there.

Nearby on the register

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