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Clean Water Act discharge permit · NPDES MTR108730

TRINITY APARTMENTS - COOLEY SITE, Missoula, MT: NPDES MTR108730 discharge permit, effluent exceedances, inspections, penalties

TRINITY APARTMENTS - COOLEY SITE, held by HEADWATERS CONSTRUCTION CO, holds NPDES permit MTR108730, which discharges to Flynn Lowney Ditch. EPA’s file records it issued January 28, 2021 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 TRINITY APARTMENTS - COOLEY SITE: its NPDES ID, its permit type and status, its dates, its address in Missoula, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR108730.

Identity

Facility as filedTRINITY APARTMENTS - COOLEY SITE
Permittee as filedHEADWATERS CONSTRUCTION CO
NPDES IDMTR108730
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJanuary 28, 2021
Expiration dateDecember 31, 2022
AddressMissoula, MT 59802
Receiving waterFLYNN LOWNEY DITCH
SubwatershedClark Fork River-Marshall Creek (HUC 170102040104)

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 MTR108730.

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 MTR108730.

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, MTR108730.

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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 MTR108730 there.

Nearby on the register

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

What this page shows

The TRINITY APARTMENTS - COOLEY SITE permit is one of 206 storm water construction permits in Missoula County on EPA's NPDES register, and 13.1% of those permits have a violation on file. Among the 194 storm water construction permits in Missoula County, 40.2% were issued earlier than this one, and it shares the Clark Fork River-Marshall Creek subwatershed with 82 NPDES permits, this one included.