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Clean Water Act discharge permit · NPDES MTR109831

ANDREINI, Boulder, MT: NPDES MTR109831 discharge permit, effluent exceedances, inspections, penalties

ANDREINI, held by Gruber Excavating Inc, holds NPDES permit MTR109831, which discharges to Muskrat Creek. EPA’s file records it issued October 18, 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 ANDREINI: its NPDES ID, its permit type and status, its dates, its address in Boulder, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR109831.

Identity

Facility as filedANDREINI
Permittee as filedGruber Excavating Inc
NPDES IDMTR109831
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
ProgramConstruction stormwater
IssuedOctober 18, 2022
Expiration dateDecember 31, 2022
AddressBoulder, MT 59632
Receiving waterMUSKRAT CREEK
SubwatershedMuskrat Creek (HUC 100200060501)

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 MTR109831.

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 MTR109831.

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.

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, MTR109831.

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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 MTR109831 there.

Nearby on the register

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

What this page shows

The ANDREINI permit is the only NPDES permit in the Muskrat Creek subwatershed, and it is one of 17 storm water construction permits in Jefferson County. Of those 17 county permits, 11.8% carry a violation on file. This permit records zero pollutants under a numeric limit and zero pollutants with an effluent exceedance.