Clean Water Act discharge permit · NPDES WY0030911
O'BRIEN SPRINGS UNITS, WY: NPDES WY0030911 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
O'BRIEN SPRINGS UNITS, held by Mustang Resources, LLC, holds NPDES permit WY0030911. EPA’s file records it issued November 28, 2012 and expiring October 31, 2017. 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 | O'BRIEN SPRINGS UNITS |
|---|---|
| Permittee as filed | Mustang Resources, LLC |
| NPDES ID | WY0030911 |
| 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 | November 28, 2012 |
| Expiration date | October 31, 2017 |
| Issuing agency | WDEQ |
| Address | WY |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 7Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Flow | 8 | 138 | 0 | ||
| pH | 4 | 80 | 0 | ||
| Sulfide, total [as S] | 0 | 58 | 0 | ||
| Produced water, oil and grease | 4 | 34 | 0 | ||
| Specific conductance | 2 | 11 | 0 | ||
| Radium 226, total | 2 | 11 | 0 | ||
| Chloride | 2 | 11 | 0 | ||
| Sulfate | 0 | 10 | 0 | ||
| Sulfate, total [as SO4] | 2 | 1 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WY0030911.
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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 26, 2022 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 19, 2022 | Permit Violations - Violation Specified in Comment | 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.
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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 WY0030911 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.