NPDES permit WY0052370 · Minor NON-POTW · expired 2025-01-31 · EPA's file as of 2026-09-26
Keep this permit as a site — opens New site at EPA's facility point (43.754767, -105.840644); you set the radius.
Check this month's numbers before you fileSign-ups are not open yet. We counted that someone asked — not who, and not which permit — and we open them once enough people do. The check stays free.
These are the last limits EPA's file holds for this permit, from an earlier version of it (version 0 in EPA's file): its current version carries none yet. Read your permit: a renewal can change them.
Last period with anything received: 2025-12-31.
Reports are due about 46 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
Each concentration limit against the same limit in comparable permits. Where it appears more than once, its strictest value.
2 other limits: fewer than 20 comparable permits.
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 002 | Specific conductance | daily maximum | <= 2000 umho/cm | all year |
| 002 | pH | instantaneous minimum | >= 6.5 SU | all year |
| 002 | pH | instantaneous maximum | <= 9 SU | all year |
| 002 | Alkalinity, total [as CaCO3] | daily maximum | report only | all year |
| 002 | Calcium, dissolved [as Ca] | daily maximum | report only | all year |
| 002 | Magnesium, dissolved [as Mg] | daily maximum | report only | all year |
| 002 | Sodium, dissolved [as Na] | daily maximum | report only | all year |
| 002 | Sodium adsorption ratio | daily maximum | <= 14 Ratio | all year |
| 002 | Arsenic, total recoverable | daily maximum | <= 3.3 ug/L | all year |
| 002 | Barium, total recoverable | daily maximum | <= 1800 ug/L | all year |
| 002 | Iron, dissolved [as Fe] | daily maximum | <= 1000 ug/L | all year |
| 002 | Chloride | daily maximum | <= 46 mg/L | all year |
| 002 | Bicarbonate as [CaCO3] | daily maximum | report only | all year |
| 002 | Flow | daily maximum | report only | all year |
| 002 | Flow | monthly average | report only | all year |
| 005 | Specific conductance | daily maximum | <= 2000 umho/cm | all year |
| 005 | pH | instantaneous minimum | >= 6.5 SU | all year |
| 005 | pH | instantaneous maximum | <= 9 SU | all year |
| 005 | Alkalinity, total [as CaCO3] | daily maximum | report only | all year |
| 005 | Calcium, dissolved [as Ca] | daily maximum | report only | all year |
| 005 | Magnesium, dissolved [as Mg] | daily maximum | report only | all year |
| 005 | Sodium, dissolved [as Na] | daily maximum | report only | all year |
| 005 | Sodium adsorption ratio | daily maximum | <= 14 Ratio | all year |
| 005 | Arsenic, total recoverable | daily maximum | <= 3.3 ug/L | all year |
| 005 | Barium, total recoverable | daily maximum | <= 1800 ug/L | all year |
| 005 | Iron, dissolved [as Fe] | daily maximum | <= 1000 ug/L | all year |
| 005 | Chloride | daily maximum | <= 46 mg/L | all year |
| 005 | Bicarbonate as [CaCO3] | daily maximum | report only | all year |
| 005 | Flow | daily maximum | report only | all year |
| 005 | Flow | monthly average | report only | all year |
| 007 | Specific conductance | daily maximum | <= 2000 umho/cm | all year |
| 007 | pH | instantaneous minimum | >= 6.5 SU | all year |
| 007 | pH | instantaneous maximum | <= 9 SU | all year |
| 007 | Alkalinity, total [as CaCO3] | daily maximum | report only | all year |
| 007 | Calcium, dissolved [as Ca] | daily maximum | report only | all year |
| 007 | Magnesium, dissolved [as Mg] | daily maximum | report only | all year |
| 007 | Sodium, dissolved [as Na] | daily maximum | report only | all year |
| 007 | Sodium adsorption ratio | daily maximum | <= 14 Ratio | all year |
| 007 | Arsenic, total recoverable | daily maximum | <= 3.3 ug/L | all year |
| 007 | Barium, total recoverable | daily maximum | <= 1800 ug/L | all year |
| 007 | Iron, dissolved [as Fe] | daily maximum | <= 1000 ug/L | all year |
| 007 | Chloride | daily maximum | <= 46 mg/L | all year |
| 007 | Bicarbonate as [CaCO3] | daily maximum | report only | all year |
| 007 | Flow | daily maximum | report only | all year |
| 007 | Flow | monthly average | report only | all year |
| 009 | Specific conductance | daily maximum | <= 2000 umho/cm | all year |
| 009 | pH | instantaneous minimum | >= 6.5 SU | all year |
| 009 | pH | instantaneous maximum | <= 9 SU | all year |
| 009 | Alkalinity, total [as CaCO3] | daily maximum | report only | all year |
| 009 | Calcium, dissolved [as Ca] | daily maximum | report only | all year |
| 009 | Magnesium, dissolved [as Mg] | daily maximum | report only | all year |
| 009 | Sodium, dissolved [as Na] | daily maximum | report only | all year |
| 009 | Sodium adsorption ratio | daily maximum | <= 14 Ratio | all year |
| 009 | Arsenic, total recoverable | daily maximum | <= 3.3 ug/L | all year |
| 009 | Barium, total recoverable | daily maximum | <= 1800 ug/L | all year |
| 009 | Iron, dissolved [as Fe] | daily maximum | <= 1000 ug/L | all year |
| 009 | Chloride | daily maximum | <= 46 mg/L | all year |
| 009 | Bicarbonate as [CaCO3] | daily maximum | report only | all year |
| 009 | Flow | daily maximum | report only | all year |
| 009 | Flow | monthly average | report only | all year |
| 010 | Specific conductance | daily maximum | <= 2000 umho/cm | all year |
| 010 | pH | instantaneous minimum | >= 6.5 SU | all year |
| 010 | pH | instantaneous maximum | <= 9 SU | all year |
| 010 | Alkalinity, total [as CaCO3] | daily maximum | report only | all year |
| 010 | Calcium, dissolved [as Ca] | daily maximum | report only | all year |
| 010 | Magnesium, dissolved [as Mg] | daily maximum | report only | all year |
| 010 | Sodium, dissolved [as Na] | daily maximum | report only | all year |
| 010 | Sodium adsorption ratio | daily maximum | <= 14 Ratio | all year |
| 010 | Arsenic, total recoverable | daily maximum | <= 3.3 ug/L | all year |
| 010 | Barium, total recoverable | daily maximum | <= 1800 ug/L | all year |
| 010 | Iron, dissolved [as Fe] | daily maximum | <= 1000 ug/L | all year |
| 010 | Chloride | daily maximum | <= 46 mg/L | all year |
| 010 | Bicarbonate as [CaCO3] | daily maximum | report only | all year |
| 010 | Flow | daily maximum | report only | all year |
| 010 | Flow | monthly average | report only | all year |
| 011 | Specific conductance | daily maximum | <= 2000 umho/cm | all year |
| 011 | pH | instantaneous minimum | >= 6.5 SU | all year |
| 011 | pH | instantaneous maximum | <= 9 SU | all year |
| 011 | Alkalinity, total [as CaCO3] | daily maximum | report only | all year |
| 011 | Calcium, dissolved [as Ca] | daily maximum | report only | all year |
| 011 | Magnesium, dissolved [as Mg] | daily maximum | report only | all year |
| 011 | Sodium, dissolved [as Na] | daily maximum | report only | all year |
| 011 | Sodium adsorption ratio | daily maximum | <= 14 Ratio | all year |
| 011 | Arsenic, total recoverable | daily maximum | <= 3.3 ug/L | all year |
| 011 | Barium, total recoverable | daily maximum | <= 1800 ug/L | all year |
| 011 | Iron, dissolved [as Fe] | daily maximum | <= 1000 ug/L | all year |
| 011 | Chloride | daily maximum | <= 46 mg/L | all year |
| 011 | Bicarbonate as [CaCO3] | daily maximum | report only | all year |
| 011 | Flow | daily maximum | report only | all year |
| 011 | Flow | monthly average | report only | all year |
| 026 | Specific conductance | daily maximum | <= 2000 umho/cm | all year |
| 026 | pH | instantaneous minimum | >= 6.5 SU | all year |
| 026 | pH | instantaneous maximum | <= 9 SU | all year |
| 026 | Alkalinity, total [as CaCO3] | daily maximum | report only | all year |
| 026 | Calcium, dissolved [as Ca] | daily maximum | report only | all year |
| 026 | Magnesium, dissolved [as Mg] | daily maximum | report only | all year |
| 026 | Sodium, dissolved [as Na] | daily maximum | report only | all year |
| 026 | Sodium adsorption ratio | daily maximum | <= 14 Ratio | all year |
| 026 | Arsenic, total recoverable | daily maximum | <= 3.3 ug/L | all year |
| 026 | Barium, total recoverable | daily maximum | <= 1800 ug/L | all year |
| 026 | Iron, dissolved [as Fe] | daily maximum | <= 1000 ug/L | all year |
| 026 | Chloride | daily maximum | <= 46 mg/L | all year |
| 026 | Bicarbonate as [CaCO3] | daily maximum | report only | all year |
| 026 | Flow | daily maximum | report only | all year |
| 026 | Flow | monthly average | report only | all year |
| SUM | Flow | monthly average | report only | all year |
| SUM | Flow | daily maximum | <= 1.15 MGD | all year |
Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states