NPDES permit WY0023761 · Minor NON-POTW · effective, expires 2031-03-31 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-06-30.
Reports are due about 28 days after each monitoring period ends (the most common figure among WY permits in EPA's filings — check your permit).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 30 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | WKLY AVG | <= 45 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 90 mg/L | 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 | <= 35 mg/L | all year |
| 001 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 001 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 001 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 001 | Iron, total [as Fe] | DAILY MX | <= 6 mg/L | all year |
| 001 | Iron, total [as Fe] | INST MAX | <= 9 mg/L | all year |
| 001 | Iron, dissolved [as Fe] | INST MAX | <= 200 ug/L | all year |
| 001 | Manganese, dissolved [as Mn] | INST MAX | <= 292 ug/L | all year |
| 001 | Duration | MO TOTAL | report only | all year |
| 001 | E. coli | MO GEOMN | <= 126 #/100mL | Apr, May, Jun, Jul, Aug, Sep |
| 001 | E. coli | MO GEOMN | <= 630 #/100mL | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | E. coli | DAILY MX | <= 576 #/100mL | Apr, May, Jun, Jul, Aug, Sep |
| 001 | E. coli | DAILY MX | <= 630 #/100mL | Jan, Feb, Mar, Oct, Nov, Dec |
| 001 | Flow | MO AVG | report only | all year |
| 001 | Flow | DAILY MX | report only | all year |
| 002 | pH | INST MIN | >= 6.5 SU | all year |
| 002 | pH | INST MAX | <= 9 SU | all year |
| 002 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 002 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 002 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 002 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 002 | Iron, total [as Fe] | DAILY MX | <= 6 mg/L | all year |
| 002 | Iron, total [as Fe] | INST MAX | <= 9 mg/L | all year |
| 002 | Iron, dissolved [as Fe] | INST MAX | <= 200 ug/L | all year |
| 002 | Manganese, dissolved [as Mn] | INST MAX | <= 292 ug/L | all year |
| 002 | Duration | MO TOTAL | report only | all year |
| 002 | Flow | MO AVG | report only | all year |
| 002 | Flow | DAILY MX | report only | all year |
| 004 | pH | INST MIN | >= 6.5 SU | all year |
| 004 | pH | INST MAX | <= 9 SU | all year |
| 004 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 004 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 004 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 004 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 004 | Iron, total [as Fe] | WKLY AVG | <= 6 mg/L | all year |
| 004 | Iron, total [as Fe] | DAILY MX | <= 9 mg/L | all year |
| 004 | Manganese, dissolved [as Mn] | INST MAX | <= 3110 ug/L | all year |
| 004 | Duration | MO TOTAL | report only | all year |
| 004 | Flow | MO AVG | report only | all year |
| 004 | Flow | DAILY MX | report only | all year |
| 006 | pH | INST MIN | >= 6.5 SU | all year |
| 006 | pH | INST MAX | <= 9 SU | all year |
| 006 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 006 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 006 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 006 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 006 | Iron, total [as Fe] | DAILY MX | <= 6 mg/L | all year |
| 006 | Iron, total [as Fe] | INST MAX | <= 9 mg/L | all year |
| 006 | Iron, dissolved [as Fe] | INST MAX | <= 200 ug/L | all year |
| 006 | Manganese, dissolved [as Mn] | INST MAX | <= 292 ug/L | all year |
| 006 | Duration | MO TOTAL | report only | all year |
| 006 | Flow | MO AVG | report only | all year |
| 006 | Flow | DAILY MX | report only | all year |
| 007 | pH | INST MIN | >= 6.5 SU | all year |
| 007 | pH | INST MAX | <= 9 SU | all year |
| 007 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 007 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 007 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 007 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 007 | Iron, total [as Fe] | DAILY MX | <= 6 mg/L | all year |
| 007 | Iron, total [as Fe] | INST MAX | <= 9 mg/L | all year |
| 007 | Iron, dissolved [as Fe] | INST MAX | <= 200 ug/L | all year |
| 007 | Manganese, dissolved [as Mn] | INST MAX | <= 292 ug/L | all year |
| 007 | Duration | MO TOTAL | report only | all year |
| 007 | Flow | MO AVG | report only | all year |
| 007 | Flow | DAILY MX | report only | all year |
| 010 | pH | INST MIN | >= 6.5 SU | all year |
| 010 | pH | INST MAX | <= 9 SU | all year |
| 010 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 010 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 010 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 010 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 010 | Iron, total [as Fe] | WKLY AVG | <= 6 mg/L | all year |
| 010 | Iron, total [as Fe] | DAILY MX | <= 9 mg/L | all year |
| 010 | Manganese, dissolved [as Mn] | INST MAX | <= 3110 ug/L | all year |
| 010 | Duration | MO TOTAL | report only | all year |
| 010 | Flow | MO AVG | report only | all year |
| 010 | Flow | DAILY MX | report only | all year |
| 016 | pH | INST MIN | >= 6.5 SU | all year |
| 016 | pH | INST MAX | <= 9 SU | all year |
| 016 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 016 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 016 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 016 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 016 | Iron, total [as Fe] | DAILY MX | <= 6 mg/L | all year |
| 016 | Iron, total [as Fe] | INST MAX | <= 9 mg/L | all year |
| 016 | Iron, dissolved [as Fe] | INST MAX | <= 200 ug/L | all year |
| 016 | Manganese, dissolved [as Mn] | INST MAX | <= 292 ug/L | all year |
| 016 | Duration | MO TOTAL | report only | all year |
| 016 | Flow | MO AVG | report only | all year |
| 016 | Flow | DAILY MX | report only | all year |
| 017 | pH | INST MIN | >= 6.5 SU | all year |
| 017 | pH | INST MAX | <= 9 SU | all year |
| 017 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 017 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 017 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 017 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 017 | Iron, total [as Fe] | DAILY MX | <= 6 mg/L | all year |
| 017 | Iron, total [as Fe] | INST MAX | <= 9 mg/L | all year |
| 017 | Iron, dissolved [as Fe] | INST MAX | <= 200 ug/L | all year |
| 017 | Manganese, dissolved [as Mn] | INST MAX | <= 292 ug/L | all year |
| 017 | Duration | MO TOTAL | report only | all year |
| 017 | Flow | MO AVG | report only | all year |
| 017 | Flow | DAILY MX | report only | all year |
| 020 | pH | INST MIN | >= 6.5 SU | all year |
| 020 | pH | INST MAX | <= 9 SU | all year |
| 020 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 020 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 020 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 020 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 020 | Iron, total [as Fe] | WKLY AVG | <= 6 mg/L | all year |
| 020 | Iron, total [as Fe] | DAILY MX | <= 9 mg/L | all year |
| 020 | Manganese, dissolved [as Mn] | INST MAX | <= 3110 ug/L | all year |
| 020 | Duration | MO TOTAL | report only | all year |
| 020 | Flow | MO AVG | report only | all year |
| 020 | Flow | DAILY MX | report only | all year |
| 022 | pH | INST MIN | >= 6.5 SU | all year |
| 022 | pH | INST MAX | <= 9 SU | all year |
| 022 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 022 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 022 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 022 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 022 | Iron, total [as Fe] | WKLY AVG | <= 6 mg/L | all year |
| 022 | Iron, total [as Fe] | DAILY MX | <= 9 mg/L | all year |
| 022 | Manganese, dissolved [as Mn] | INST MAX | <= 3110 ug/L | all year |
| 022 | Duration | MO TOTAL | report only | all year |
| 022 | Flow | MO AVG | report only | all year |
| 022 | Flow | DAILY MX | report only | all year |
| 023 | pH | INST MIN | >= 6.5 SU | all year |
| 023 | pH | INST MAX | <= 9 SU | all year |
| 023 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 023 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 023 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 023 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 023 | Iron, total [as Fe] | WKLY AVG | <= 6 mg/L | all year |
| 023 | Iron, total [as Fe] | DAILY MX | <= 9 mg/L | all year |
| 023 | Manganese, dissolved [as Mn] | INST MAX | <= 3110 ug/L | all year |
| 023 | Duration | MO TOTAL | report only | all year |
| 023 | Flow | MO AVG | report only | all year |
| 023 | Flow | DAILY MX | report only | all year |
| 026 | pH | INST MIN | >= 6.5 SU | all year |
| 026 | pH | INST MAX | <= 9 SU | all year |
| 026 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 026 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 026 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 026 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 026 | Iron, total [as Fe] | WKLY AVG | <= 6 mg/L | all year |
| 026 | Iron, total [as Fe] | DAILY MX | <= 9 mg/L | all year |
| 026 | Manganese, dissolved [as Mn] | INST MAX | <= 3110 ug/L | all year |
| 026 | Duration | MO TOTAL | report only | all year |
| 026 | Flow | MO AVG | report only | all year |
| 026 | Flow | DAILY MX | report only | all year |
| 031 | pH | INST MIN | >= 6.5 SU | all year |
| 031 | pH | INST MAX | <= 9 SU | all year |
| 031 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 031 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 031 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 031 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 031 | Iron, total [as Fe] | DAILY MX | <= 6 mg/L | all year |
| 031 | Iron, total [as Fe] | INST MAX | <= 9 mg/L | all year |
| 031 | Iron, dissolved [as Fe] | INST MAX | <= 200 ug/L | all year |
| 031 | Manganese, dissolved [as Mn] | INST MAX | <= 292 ug/L | all year |
| 031 | Duration | MO TOTAL | report only | all year |
| 031 | Flow | MO AVG | report only | all year |
| 031 | Flow | DAILY MX | report only | all year |
| 032 | pH | INST MIN | >= 6.5 SU | all year |
| 032 | pH | INST MAX | <= 9 SU | all year |
| 032 | Solids, total suspended | MO AVG | <= 35 mg/L | all year |
| 032 | Solids, total suspended | DAILY MX | <= 70 mg/L | all year |
| 032 | Solids, settleable | INST MAX | <= .5 mL/L | all year |
| 032 | Iron, total [as Fe] | MO AVG | <= 3 mg/L | all year |
| 032 | Iron, total [as Fe] | DAILY MX | <= 6 mg/L | all year |
| 032 | Iron, total [as Fe] | INST MAX | <= 9 mg/L | all year |
| 032 | Iron, dissolved [as Fe] | INST MAX | <= 200 ug/L | all year |
| 032 | Manganese, dissolved [as Mn] | INST MAX | <= 292 ug/L | all year |
| 032 | Duration | MO TOTAL | report only | all year |
| 032 | Flow | MO AVG | report only | all year |
| 032 | Flow | 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