Clean Water Act discharge permit · NPDES MTG070978
MADISON DAM TURBINE REPLACEMENT, Ennis, MT: NPDES MTG070978 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MADISON DAM TURBINE REPLACEMENT, held by IMCO GENERAL CONSTRUCTION, holds NPDES permit MTG070978, which discharges to Silver Bow Creek. EPA’s file records it issued February 20, 2020 and expiring February 29, 2020. 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 MADISON DAM TURBINE REPLACEMENT: its NPDES ID, its permit type and status, its dates, its address in Ennis, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG070978.
Identity
| Facility as filed | MADISON DAM TURBINE REPLACEMENT |
|---|---|
| Permittee as filed | IMCO GENERAL CONSTRUCTION |
| NPDES ID | MTG070978 |
| 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 |
| Issued | February 20, 2020 |
| Expiration date | February 29, 2020 |
| Address | Ennis, MT 59729 |
| Receiving water | SILVER BOW CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Madison River-Bear Trap Canyon (HUC 100200071501) |
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 MTG070978.
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 MTG070978.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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
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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 MTG070978 there.
Nearby on the register
- Discharge permits in Ennis
- Every permit record in Ennis, A to Z
- Discharge permits in Montana
- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.