Clean Water Act discharge permit · NPDES MT0031780
ROSEBUD POWER PLANT COAL PILE RUNOFF, Colstrip, MT: NPDES MT0031780 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ROSEBUD POWER PLANT COAL PILE RUNOFF, held by COLSTRIP ENERGY LIMITED PARTNERSHIP, holds NPDES permit MT0031780, which discharges to E Fork Armells Creek. EPA’s file records it issued October 30, 2015 and expiring December 31, 2020. 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 ROSEBUD POWER PLANT COAL PILE RUNOFF: its NPDES ID, its permit type and status, its dates, its address in Colstrip, Montana, its receiving water, and 10 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MT0031780.
Identity
| Facility as filed | ROSEBUD POWER PLANT COAL PILE RUNOFF |
|---|---|
| Permittee as filed | COLSTRIP ENERGY LIMITED PARTNERSHIP |
| NPDES ID | MT0031780 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | October 30, 2015 |
| Expiration date | December 31, 2020 |
| Address | Colstrip, MT 59323 |
| Receiving water | E FORK ARMELLS CREEK |
| Subwatershed | East Fork Armells Creek-Sevenmile Creek (HUC 101000011004) |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler MTR000004879; ICIS-AIR source MT0000003008700007 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 10Pollutants on file
- 10Under 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 |
|---|---|---|---|---|---|
| Flow rate | 4 | 0 | 0 | ||
| pH | 4 | 0 | 0 | ||
| Oil and grease, hexane extr method | 4 | 0 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Solids, total dissolved [TDS] | 4 | 0 | 0 | ||
| Solids, total suspended | 2 | 0 | 0 | ||
| Precipitation, monthly accumulation | 2 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MT0031780.
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 MT0031780.
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, MT0031780.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
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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 MT0031780 there.
Nearby on the register
- Discharge permits in Colstrip
- Every permit record in Colstrip, 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.