Clean Water Act discharge permit · NPDES WY0028231
FED. #2-26 & #1-26, W-19719, (Unknown City), WY: NPDES WY0028231 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
FED. #2-26 & #1-26, W-19719, held by Antler Energy, LLC, holds NPDES permit WY0028231. EPA’s file records it issued September 26, 2017 and expiring October 31, 2022. 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 | FED. #2-26 & #1-26, W-19719 |
|---|---|
| Permittee as filed | Antler Energy, LLC |
| NPDES ID | WY0028231 |
| 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 | September 26, 2017 |
| Expiration date | October 31, 2022 |
| Issuing agency | WDEQ |
| Address | (Unknown City), WY |
| Subwatershed | Willow Springs-Medicine Bow River (HUC 101800040105) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 7With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| pH | 2 | 5 | 1 | December 31, 2014 | |
| Flow | 4 | 24 | 0 | ||
| Sulfide, total [as S] | 2 | 6 | 0 | ||
| Produced water, oil and grease | 2 | 6 | 0 | ||
| Specific conductance | 1 | 2 | 0 | ||
| Sulfate, total [as SO4] | 1 | 2 | 0 | ||
| Chloride | 1 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WY0028231.
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 WY0028231 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.