Clean Water Act discharge permit · NPDES MT0030180
YELLOWSTONE ENERGY LIMITED PARTNERSHIP FACILITY, Billings, MT: NPDES MT0030180 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
YELLOWSTONE ENERGY LIMITED PARTNERSHIP FACILITY, held by YELLOWSTONE ENERGY LIMITED PARTNERSHIP, holds NPDES permit MT0030180, which discharges to Yellowstone River. EPA’s file records it issued July 22, 2008 and expiring August 31, 2013. 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.
Identity
| Facility as filed | YELLOWSTONE ENERGY LIMITED PARTNERSHIP FACILITY |
|---|---|
| Permittee as filed | YELLOWSTONE ENERGY LIMITED PARTNERSHIP |
| NPDES ID | MT0030180 |
| 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 | July 22, 2008 |
| Expiration date | August 31, 2013 |
| Issuing agency | MONTANA DEQ |
| Address | Billings, MT 59101 |
| Receiving water | YELLOWSTONE RIVER |
| Subwatershed | Yellowstone River-Sevenmile Creek (HUC 100700070403) |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | ICIS-AIR source MT0000003011100023 |
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
- 16Pollutants on file
- 11Under a numeric limit
- 14With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Copper, total recoverable | 1 | 112 | 50 | June 30, 2026 | 2,486% over the limit |
| Solids, total suspended | 3 | 57 | 24 | April 30, 2008 | 211% over the limit |
| pH | 2 | 34 | 5 | August 31, 2006 | |
| Zinc, total recoverable | 1 | 35 | 2 | November 30, 2024 | 202% over the limit |
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 2 | 1 | October 31, 2015 | |
| Oil and grease, hexane extr method | 0 | 30 | 0 | ||
| Flow rate | 2 | 28 | 0 | ||
| Chlorine, total residual | 1 | 19 | 0 | ||
| Solids, total dissolved | 2 | 17 | 0 | ||
| Oil and grease visual | 0 | 3 | 0 | ||
| Phosphorus, total [as P] | 1 | 2 | 0 | ||
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | 1 | 1 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 1 | 0 | ||
| Report due [yrmoda] | 0 | 1 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 0 | 0 | ||
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | 1 | 0 | 0 |
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 MT0030180.
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, MT0030180.
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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 MT0030180 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.