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Clean Water Act discharge permit · NPDES MTR111077

MOUNTAIN GATEWAY, Bozeman, MT: NPDES MTR111077 discharge permit, effluent exceedances, inspections, penalties

MOUNTAIN GATEWAY, held by Headwaters Engineering, holds NPDES permit MTR111077, which discharges to Elk Grove Slough. EPA’s file records it issued November 27, 2024 and expiring December 31, 2027. 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 MOUNTAIN GATEWAY: its NPDES ID, its permit type and status, its dates, its address in Bozeman, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR111077.

Identity

Facility as filedMOUNTAIN GATEWAY
Permittee as filedHeadwaters Engineering
NPDES IDMTR111077
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedNovember 27, 2024
Expiration dateDecember 31, 2027
AddressBozeman, MT 59718
Receiving waterELK GROVE SLOUGH
SubwatershedGallatin River-Gallatin Gateway (HUC 100200080704)

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 MTR111077.

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 MTR111077.

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, MTR111077.

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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 MTR111077 there.

Nearby on the register

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

What this page shows

The MOUNTAIN GATEWAY storm water construction permit, MTR111077, is one of 600 storm water construction permits in Gallatin County, and the 6.0% of those with a violation on file is a figure against which it can be compared. Across the 579 storm water construction permits in Gallatin County, this permit, held by Headwaters Engineering, is among those issued later than 78.2% of its peers. It shares the Gallatin River-Gallatin Gateway subwatershed with 36 NPDES permits, and it has no pollutants under a numeric limit and no pollutants with an effluent exceedance on file.