Clean Water Act discharge permit · NPDES MTR111684

WESTATE MACHINERY, Missoula, MT: NPDES MTR111684 discharge permit, effluent exceedances, inspections, penalties

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

WESTATE MACHINERY, held by LANGLAS AND ASSOCIATES INC, holds NPDES permit MTR111684, which discharges to Grass Valley French Ditch. EPA’s file records it issued March 27, 2026 and expiring December 31, 2027. 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 WESTATE MACHINERY: 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 MTR111684.

Identity

Facility as filed	WESTATE MACHINERY
Permittee as filed	LANGLAS AND ASSOCIATES INC
NPDES ID	MTR111684
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 27, 2026
Expiration date	December 31, 2027
Address	Missoula, MT 59808
Receiving water	GRASS VALLEY FRENCH DITCH
Subwatershed	La Valle Creek (HUC 170102040202)
SIC	1542 – Nonresidential 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 MTR111684.

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 MTR111684.

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, MTR111684.

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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 MTR111684 there.

Nearby on the register

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

Among the 206 storm water construction permits on EPA's NPDES register in Missoula County, the WESTATE MACHINERY permit (NPDES ID MTR111684) is one of 194 in the same program in that county, and 88.1% of those 194 were issued earlier than its March 27, 2026 issue date. Of the 206 storm water construction permits in Missoula County, 13.1% carry a violation on file, whereas this permit has no pollutant with a numeric limit or an effluent exceedance recorded against it (both counted as 0). The permit also sits among 25 NPDES permits in the La Valle Creek subwatershed, this one included.