Clean Water Act discharge permit · NPDES MTR109132
I-90 EROSION REPAIR GARRISON, Garrison, MT: NPDES MTR109132 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
I-90 EROSION REPAIR GARRISON, held by Montana Department of Transportation, holds NPDES permit MTR109132, which discharges to Clark Fork. EPA’s file records it issued August 31, 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 I-90 EROSION REPAIR GARRISON: its NPDES ID, its permit type and status, its dates, its address in Garrison, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR109132.
Identity
| Facility as filed | I-90 EROSION REPAIR GARRISON |
|---|---|
| Permittee as filed | Montana Department of Transportation |
| NPDES ID | MTR109132 |
| 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 | August 31, 2021 |
| Expiration date | December 31, 2022 |
| Address | Garrison, MT 59731 |
| Receiving water | CLARK FORK |
| Subwatershed | Clark Fork River-Oneil Creek (HUC 170102010708) |
Cited to the EPA ICIS-NPDES permit file (ECHO 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 MTR109132.
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 MTR109132.
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, MTR109132.
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- One watershed — $2,990/year
- One state — $4,990/year
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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 MTR109132 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.