Clean Water Act discharge permit · NPDES MTR000058
ROSEBUD POWER PLANT, Colstrip, MT: NPDES MTR000058 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 1Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ROSEBUD POWER PLANT, held by COLSTRIP ENERGY LIMITED PARTNERSHIP, holds NPDES permit MTR000058, which discharges to East Fork Armells Creek. EPA’s file records it issued June 1, 2018 and expiring January 31, 2023. 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.
Identity
| Facility as filed | ROSEBUD POWER PLANT |
|---|---|
| Permittee as filed | COLSTRIP ENERGY LIMITED PARTNERSHIP |
| NPDES ID | MTR000058 |
| 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 | Industrial stormwater |
| Issued | June 1, 2018 |
| Expiration date | January 31, 2023 |
| Address | Colstrip, MT 59323 |
| Receiving water | EAST FORK ARMELLS CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | East Fork Armells Creek-Sevenmile Creek (HUC 101000011004) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 1Pollutants on file
- 1Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Iron, total [as Fe] | 3 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR000058.
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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 11, 2023 | WW Storm Water Non-Construction - Failure to properly install/implement BMPs | ST6 |
| January 11, 2023 | WW Storm Water Non-Construction - Failure to submit required report (non-DMR) | ST6 |
| January 11, 2023 | WW Storm Water Non-Construction - Failure to properly operate and maintain BMPs | ST6 |
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, MTR000058.
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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 MTR000058 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.