Clean Water Act discharge permit · NPDES MTR103042
MONTANA DEPT OF TRANSPORTATION - SLOPE FLATTENING / WIDENING GALLATIN CANYON, Big Sky, MT: NPDES MTR103042 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
MONTANA DEPT OF TRANSPORTATION - SLOPE FLATTENING / WIDENING GALLATIN CANYON, held by MONTANA DEPT OF TRANSPORTATION, holds NPDES permit MTR103042, which discharges to 5 Water Bodies (See Permitted Features Screen). EPA’s file records it issued May 23, 2008 and expiring December 31, 2011. 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 MONTANA DEPT OF TRANSPORTATION - SLOPE FLATTENING / WIDENING GALLATIN CANYON: its NPDES ID, its permit type and status, its dates, its address in Big Sky, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR103042.
Identity
| Facility as filed | MONTANA DEPT OF TRANSPORTATION - SLOPE FLATTENING / WIDENING GALLATIN CANYON |
|---|---|
| Permittee as filed | MONTANA DEPT OF TRANSPORTATION |
| NPDES ID | MTR103042 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issued | May 23, 2008 |
| Expiration date | December 31, 2011 |
| Issuing agency | MONTANA DEQ |
| Address | Big Sky, MT 59716 |
| Receiving water | 5 WATER BODIES (SEE PERMITTED FEATURES SCREEN) |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | West Fork Gallatin River (HUC 100200080202) |
| SIC | 1622 – Bridge, Tunnel, & Elevated Highway |
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 MTR103042.
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 MTR103042.
Inspections
EPA’s inspection file holds no inspection for NPDES MTR103042.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES MTR103042.
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, MTR103042.
Start the watch
- 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 MTR103042 there.
Nearby on the register
- Discharge permits in Big Sky
- Every permit record in Big Sky, A to Z
- Discharge permits in Montana
- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.