Clean Water Act discharge permit · NPDES WY0025887
SHEEP CREEK FIELD CHEYENNE, (Unknown City), WY: NPDES WY0025887 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
SHEEP CREEK FIELD CHEYENNE, held by Meerkat Logistics & Operations, LLC, holds NPDES permit WY0025887. EPA’s file records it issued March 12, 2018 and expiring April 30, 2023. 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 | SHEEP CREEK FIELD CHEYENNE |
|---|---|
| Permittee as filed | Meerkat Logistics & Operations, LLC |
| NPDES ID | WY0025887 |
| 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 | March 12, 2018 |
| Expiration date | April 30, 2023 |
| Issuing agency | WDEQ |
| Address | (Unknown City), WY |
| Subwatershed | Lower Crooks Creek (HUC 101800060604) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 12Pollutants on file
- 9Under a numeric limit
- 12With 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 |
|---|---|---|---|---|---|
| Radium 226 + radium 228, total | 1 | 19 | 9 | June 30, 2026 | 386% over the limit |
| Arsenic, total [as As] | 1 | 16 | 6 | December 31, 2025 | 360% over the limit |
| Produced water, oil and grease | 2 | 38 | 5 | December 31, 2025 | 8,980% over the limit |
| Sulfate, total [as SO4] | 1 | 16 | 4 | June 30, 2025 | 15% over the limit |
| Solids, total dissolved | 0 | 6 | 4 | December 31, 2025 | 11% over the limit |
| Flow | 4 | 132 | 0 | ||
| pH | 2 | 36 | 0 | ||
| Sulfide, total [as S] | 2 | 34 | 0 | ||
| Specific conductance | 1 | 12 | 0 | ||
| Chloride | 1 | 12 | 0 | ||
| Arsenic, total recoverable | 0 | 2 | 0 | ||
| Radium 226, total | 0 | 2 | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 5, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| March 5, 2024 | Reporting Violations - Failure to Submit DMRs | ST6 |
| May 15, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| May 14, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
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 WY0025887 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.