Clean Water Act discharge permit · NPDES WYG720468
COWBOY STATE MINE, (Unknown City), WY: NPDES WYG720468 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
COWBOY STATE MINE, held by Wyoming Rare (USA) Inc., holds NPDES permit WYG720468. EPA’s file records it issued June 25, 2025 and expiring June 24, 2026. 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 | COWBOY STATE MINE |
|---|---|
| Permittee as filed | Wyoming Rare (USA) Inc. |
| NPDES ID | WYG720468 |
| 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 | June 25, 2025 |
| Expiration date | June 24, 2026 |
| Issuing agency | Wyoming Department of Environmental Quality |
| Address | (Unknown City), WY |
| Subwatershed | Canyon Creek-Sybille Creek (HUC 101800110204) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 5Pollutants on file
- 5Under a numeric limit
- 5With 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 | 14 | 182 | 0 | ||
| pH | 12 | 156 | 0 | ||
| Flow | 12 | 156 | 0 | ||
| Duration | 6 | 78 | 0 | ||
| Solids, total dissolved | 6 | 78 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WYG720468.
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 WYG720468.
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.
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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 WYG720468 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.