Clean Water Act discharge permit · NPDES WY0052426
FOURMILE CREEK PORTION OF THE CAT CREEK POD, (Unknown City), WY: NPDES WY0052426 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
FOURMILE CREEK PORTION OF THE CAT CREEK POD, held by Carbon Creek Energy, LLC, holds NPDES permit WY0052426. EPA’s file records it issued December 11, 2023 and expiring August 31, 2025. 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 | FOURMILE CREEK PORTION OF THE CAT CREEK POD |
|---|---|
| Permittee as filed | Carbon Creek Energy, LLC |
| NPDES ID | WY0052426 |
| 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 | December 11, 2023 |
| Expiration date | August 31, 2025 |
| Issuing agency | Wyoming Department of Environmental Quality |
| Address | (Unknown City), WY |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Red Draw-Powder River (HUC 100902020401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 20Pollutants on file
- 14Under a numeric limit
- 17With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Radium 226, total | 0 | 3 | 3 | December 31, 2012 | 67% over the limit |
| Flow | 19 | 288 | 1 | May 31, 2011 | 14% over the limit |
| Sodium, dissolved [as Na] | 12 | 16 | 0 | ||
| Specific conductance | 12 | 13 | 0 | ||
| Calcium, dissolved [as Ca] | 12 | 13 | 0 | ||
| Magnesium, dissolved [as Mg] | 12 | 13 | 0 | ||
| Sodium adsorption ratio | 12 | 13 | 0 | ||
| Solids, total dissolved | 9 | 3 | 0 | ||
| Flow, total | 0 | 2 | 0 | ||
| Pass/Fail Static 96 Hr Acute Pimephales Promelas | 0 | 2 | 0 | ||
| Alkalinity, total [as CaCO3] | 9 | 1 | 0 | ||
| Iron, dissolved [as Fe] | 9 | 1 | 0 | ||
| Chloride | 9 | 1 | 0 | ||
| Bicarbonate as [CaCO3] | 9 | 1 | 0 | ||
| Arsenic, total recoverable | 0 | 1 | 0 | ||
| Barium, total recoverable | 0 | 1 | 0 | ||
| Pass/Fail Static 48Hr Acute Daphnia Magna | 0 | 1 | 0 | ||
| pH | 18 | 0 | 0 | ||
| Arsenic, total [as As] | 9 | 0 | 0 | ||
| Barium, total [as Ba] | 9 | 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 WY0052426.
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 WY0052426 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.