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Clean Water Act discharge permit · NPDES MTR109459

COMMERCIAL APRON EXPANSION - BOZEMAN AIRPORT, Belgrade, MT: NPDES MTR109459 discharge permit, effluent exceedances, inspections, penalties

COMMERCIAL APRON EXPANSION - BOZEMAN AIRPORT, held by KNIFE RIVER BELGRADE, holds NPDES permit MTR109459, which discharges to Mammoth Ditch. EPA’s file records it issued May 4, 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 COMMERCIAL APRON EXPANSION - BOZEMAN AIRPORT: its NPDES ID, its permit type and status, its dates, its address in Belgrade, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR109459.

Identity

Facility as filedCOMMERCIAL APRON EXPANSION - BOZEMAN AIRPORT
Permittee as filedKNIFE RIVER BELGRADE
NPDES IDMTR109459
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedMay 4, 2022
Expiration dateDecember 31, 2022
AddressBelgrade, MT 59714
Receiving waterMAMMOTH DITCH
SubwatershedEast Gallatin River-Belgrade (HUC 100200081302)

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 MTR109459.

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 MTR109459.

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, MTR109459.

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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 MTR109459 there.

Nearby on the register

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

What this page shows

The COMMERCIAL APRON EXPANSION - BOZEMAN AIRPORT permit, filed under the permittee KNIFE RIVER BELGRADE, is one of 600 storm water construction permits in Gallatin County, and 6.0% of those permits have a violation on file. Among the 79 NPDES permits in the East Gallatin River-Belgrade subwatershed, this permit has no pollutants under a numeric limit and no effluent exceedances recorded.