Clean Water Act discharge permit · NPDES WY0025950
BIG EAGLE MINE, WY: NPDES WY0025950 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
BIG EAGLE MINE, held by Kennecott Uranium Company, holds NPDES permit WY0025950. EPA’s file records it issued May 28, 2013 and expiring June 30, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | BIG EAGLE MINE |
|---|---|
| Permittee as filed | Kennecott Uranium Company |
| NPDES ID | WY0025950 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 28, 2013 |
| Expiration date | June 30, 2018 |
| Issuing agency | WDEQ |
| Address | WY |
| Subwatershed | Middle Crooks Creek (HUC 101800060603) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 15Under a numeric limit
- 15With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 6 | 80 | 0 | ||
| Radium 226, dissolved | 6 | 80 | 0 | ||
| Uranium, total | 6 | 80 | 0 | ||
| Flow | 6 | 80 | 0 | ||
| Radium 226, total | 4 | 41 | 0 | ||
| Zinc, dissolved [as Zn] | 3 | 40 | 0 | ||
| Produced water, oil and grease | 3 | 40 | 0 | ||
| Duration | 2 | 39 | 0 | ||
| Selenium, total [as Se] | 1 | 36 | 0 | ||
| pH | 6 | 24 | 0 | ||
| Zinc, total [as Zn] | 6 | 24 | 0 | ||
| Chemical Oxygen Demand [COD] | 6 | 24 | 0 | ||
| Pass/Fail Static 96 Hr Acute Pimephales Promelas | 3 | 12 | 0 | ||
| Pass/Fail Static 24Hr Acute Ceriodaphnia Dubia | 3 | 12 | 0 | ||
| Selenium, total recoverable | 2 | 3 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WY0025950.
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 WY0025950.
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
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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 WY0025950 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.