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
- 0Inspections on file
- 0Formal enforcement actions
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.
COWBOY STATE MINE, (Unknown City), Wyoming: Coverage under a general permit WYG720468, held by Wyoming Rare (USA) Inc.; Administratively continued (past its expiration date and still in force until reissued); issued June 25, 2025, term to June 24, 2026, by Wyoming Department of Environmental Quality.
- Solids, total suspended: 14 limits, 182 violations of any kind, 0 effluent exceedances.
- pH: 12 limits, 156 violations of any kind, 0 effluent exceedances.
- Flow: 12 limits, 156 violations of any kind, 0 effluent exceedances.
- Duration: 6 limits, 78 violations of any kind, 0 effluent exceedances.
- Solids, total dissolved: 6 limits, 78 violations of any kind, 0 effluent exceedances.
COWBOY STATE MINE among its neighbors
EPA’s permit file holds 1 discharge permits in the Canyon Creek-Sybille Creek subwatershed (HUC 101800110204), WYG720468 among them. Its county holds 45, 1 of them major permits; WYG720468 is a minor permit.
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) |
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.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WYG720468.
Inspections
EPA’s inspection file holds no inspection for NPDES WYG720468.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES WYG720468.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.