Clean Water Act discharge permit · NPDES MTR109395

STILLWATERS ON THE CLARK FORK #3, PHASES 1-12, Missoula, MT: NPDES MTR109395 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

STILLWATERS ON THE CLARK FORK #3, PHASES 1-12, held by Greg Thomson - Stillwaters Phases 1-12, holds NPDES permit MTR109395, which discharges to Clark Fork. EPA’s file records it issued March 18, 2022 and expiring December 31, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for STILLWATERS ON THE CLARK FORK #3, PHASES 1-12: 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 MTR109395.

Identity

Facility as filed	STILLWATERS ON THE CLARK FORK #3, PHASES 1-12
Permittee as filed	Greg Thomson - Stillwaters Phases 1-12
NPDES ID	MTR109395
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	March 18, 2022
Expiration date	December 31, 2022
Address	Missoula, MT 59802
Receiving water	CLARK FORK
Subwatershed	Clark Fork River-Rock Creek (HUC 170102040205)
SIC	1522 – Residential Construction

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR109395.

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTR109395.

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, MTR109395.

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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 MTR109395 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

Of the 206 storm water construction permits in Missoula County, 13.1% have a violation on file. The Clark Fork River-Rock Creek subwatershed counts 10 NPDES permits, this permit included. STILLWATERS ON THE CLARK FORK #3, PHASES 1-12 is among the 194 storm water construction permits in Missoula County counting this permit, and 51.5% of that group were issued before this permit.