Clean Water Act discharge permit · NPDES WY0096946
ELK MOUNTAIN LEASE - UPRR ANSCHUTZ RANCH #1, (Unknown City), WY: NPDES WY0096946 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ELK MOUNTAIN LEASE - UPRR ANSCHUTZ RANCH #1, held by Diamond Oil & Gas, holds NPDES permit WY0096946. EPA’s file records it issued April 25, 2023 and expiring March 31, 2028. 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 | ELK MOUNTAIN LEASE - UPRR ANSCHUTZ RANCH #1 |
|---|---|
| Permittee as filed | Diamond Oil & Gas |
| NPDES ID | WY0096946 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 25, 2023 |
| Expiration date | March 31, 2028 |
| Issuing agency | Wyoming Department of Environmental Quality |
| Address | (Unknown City), WY |
| Subwatershed | Bear Creek-Medicine Bow River (HUC 101800040103) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 7With 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 |
|---|---|---|---|---|---|
| pH | 8 | 12 | 0 | ||
| Flow | 4 | 12 | 0 | ||
| Sulfide, total [as S] | 4 | 6 | 0 | ||
| Produced water, oil and grease | 2 | 3 | 0 | ||
| Specific conductance | 1 | 1 | 0 | ||
| Chloride | 1 | 1 | 0 | ||
| Sulfate | 1 | 1 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Pass/Fail Static 96 Hr Acute Pimephales Promelas | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WY0096946.
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 WY0096946.
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 WY0096946 there.
Nearby on the register
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- Discharge permits in Wyoming
- Every permit record in Wyoming, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.