NPDES permit WY0021458 · Major POTW · effective, expires 2029-10-31 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31.
Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Temperature, water deg. centigrade | DAILY MX | report only | all year |
| 001 | Temperature, water deg. centigrade | MO AVG | report only | all year |
| 001 | Oxygen, dissolved [DO] | DAILY MX | report only | all year |
| 001 | pH | INST MIN | >= 6.5 SU | all year |
| 001 | pH | INST MAX | <= 9 SU | all year |
| 001 | Solids, total suspended | MO AVG | report only | all year |
| 001 | Solids, total suspended | WKLY AVG | report only | all year |
| 001 | Solids, total suspended | DAILY MX | report only | all year |
| 001 | Solids, total suspended | MO AVG | <= 100 mg/L | all year |
| 001 | Solids, total suspended | WKLY AVG | report only | all year |
| 001 | Solids, total suspended | DAILY MX | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | report only | all year |
| 001 | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| 001 | Phosphate, ortho [as P] | DAILY MX | report only | all year |
| 001 | Duration | MO TOTAL | report only | all year |
| 001 | Chlorine, total residual | MO AVG | <= .011 mg/L | all year |
| 001 | Chlorine, total residual | DAILY MX | <= .019 mg/L | all year |
| 001 | E. coli | MO AVG | <= 630 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | E. coli | MO AVG | <= 126 #/100mL | May, Jun, Jul, Aug, Sep |
| 001 | E. coli | DAILY MX | <= 630 #/100mL | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | E. coli | DAILY MX | <= 235 #/100mL | May, Jun, Jul, Aug, Sep |
| 001 | Solids, total dissolved | DAILY MX | report only | all year |
| 001 | Flow | MO AVG | <= 5 MGD | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 25 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | WKLY AVG | <= 40 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | WKLY AVG | report only | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | report only | all year |
| 001 | BOD, carbonaceous, percent removal | MO AV MN | >= 85 % | all year |
| 001 | Solids, suspended percent removal | MO AV MN | >= 85 % | all year |
| 001 | Produced water, oil and grease | DAILY MX | <= 10 mg/L | all year |
| 001 | Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 4C | <= 0 pass=0;fail=1 | all year |
| 001 | Pass/Fail Static 96 Hr Acute Pimephales Promelas | 9D | <= 0 pass=0;fail=1 | all year |
| BHR | Temperature, water deg. centigrade | DAILY MX | report only | all year |
| BHR | pH | INST MIN | report only | all year |
| BHR | pH | INST MAX | report only | all year |
| BHR | Nitrogen, total [as N] | DAILY MX | report only | all year |
| BHR | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| BHR | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| BHR | Phosphorus, total [as P] | DAILY MX | report only | all year |
| BHR | Phosphate, ortho [as P] | DAILY MX | report only | all year |
| DFC | Temperature, water deg. centigrade | DAILY MX | report only | all year |
| DFC | pH | INST MIN | report only | all year |
| DFC | pH | INST MAX | report only | all year |
| DFC | Nitrogen, total [as N] | DAILY MX | report only | all year |
| DFC | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| DFC | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| DFC | Phosphorus, total [as P] | DAILY MX | report only | all year |
| DFC | Phosphate, ortho [as P] | DAILY MX | report only | all year |
| SR1 | Temperature, water deg. centigrade | DAILY MX | report only | all year |
| SR1 | pH | INST MIN | report only | all year |
| SR1 | pH | INST MAX | report only | all year |
| SR1 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| SR1 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| SR1 | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| SR1 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| SR1 | Phosphate, ortho [as P] | DAILY MX | report only | all year |
| SR2 | Temperature, water deg. centigrade | DAILY MX | report only | all year |
| SR2 | pH | INST MIN | report only | all year |
| SR2 | pH | INST MAX | report only | all year |
| SR2 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| SR2 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| SR2 | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| SR2 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| SR2 | Phosphate, ortho [as P] | DAILY MX | report only | all year |
| UFC | Temperature, water deg. centigrade | DAILY MX | report only | all year |
| UFC | pH | INST MIN | report only | all year |
| UFC | pH | INST MAX | report only | all year |
| UFC | Nitrogen, total [as N] | DAILY MX | report only | all year |
| UFC | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| UFC | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| UFC | Phosphorus, total [as P] | DAILY MX | report only | all year |
| UFC | Phosphate, ortho [as P] | DAILY MX | report only | 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