NPDES permit MI0058670 · Minor NON-POTW · effective, expires 2029-12-15 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-06-30.
Reports are due about 52 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 | Oxygen, dissolved [DO] | DAILY MN | >= 6 mg/L | May, Jun, Jul, Aug, Sep |
| 001 | Oxygen, dissolved [DO] | M5 | >= 5 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | pH | MINIMUM | >= 6.5 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | pH | DAILY MN | report only | all year |
| 001 | pH | DAILY MX | report only | all year |
| 001 | Solids, total suspended | MO AVG | <= 20 mg/L | May, Jun, Jul, Aug, Sep |
| 001 | Solids, total suspended | 30DA AVG | <= 30 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | Solids, total suspended | 7 DA AVG | <= 30 mg/L | May, Jun, Jul, Aug, Sep |
| 001 | Solids, total suspended | 7 DA AVG | <= 45 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | Solids, total suspended | 30DA AVG | <= 150 lb/d | May, Jun, Jul, Aug, Sep |
| 001 | Solids, total suspended | 30DA AVG | <= 225 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | Solids, total suspended | 7 DA AVG | <= 225 lb/d | May, Jun, Jul, Aug, Sep |
| 001 | Solids, total suspended | 7 DA AVG | <= 338 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | Solids, total suspended | 30DA AVG | report only | all year |
| 001 | Solids, total suspended | 30DA AVG | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 3.7 mg/L | Jan, Feb, Mar, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 1.9 mg/L | Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= .5 mg/L | May, Jun, Jul, Aug, Sep |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 2.5 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 2 mg/L | May, Jun, Jul, Aug, Sep |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 3.5 mg/L | Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 12 mg/L | Jan, Feb, Mar, Dec |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 5 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 2 mg/L | May, Jun, Jul, Aug, Sep |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 3.5 mg/L | Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 5 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 12 mg/L | Jan, Feb, Mar, Dec |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 3.8 lb/d | May, Jun, Jul, Aug, Sep |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 19 lb/d | Apr |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 14 lb/d | Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 28 lb/d | Jan, Feb, Mar, Dec |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 15 lb/d | May, Jun, Jul, Aug, Sep |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 26 lb/d | Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 90 lb/d | Jan, Feb, Mar, Dec |
| 001 | Nitrogen, ammonia total [as N] | 7 DA AVG | <= 38 lb/d | Apr |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 15 lb/d | May, Jun, Jul, Aug, Sep |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 26 lb/d | Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 38 lb/d | Apr |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 90 lb/d | Jan, Feb, Mar, Dec |
| 001 | Phosphorus, total [as P] | 30DA AVG | <= .1 mg/L | May, Jun, Jul, Aug, Sep |
| 001 | Phosphorus, total [as P] | 30DA AVG | <= 1 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | Phosphorus, total [as P] | 7 DA AVG | <= 2 mg/L | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | Phosphorus, total [as P] | 30DA AVG | <= .75 lb/d | May, Jun, Jul, Aug, Sep |
| 001 | Phosphorus, total [as P] | 30DA AVG | <= 7.5 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | Phosphorus, total [as P] | 7 DA AVG | <= 1.5 lb/d | May, Jun, Jul, Aug, Sep |
| 001 | Phosphorus, total [as P] | 7 DA AVG | <= 15 lb/d | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | Chloride [as Cl] | MO AVG | report only | all year |
| 001 | Chloride [as Cl] | DAILY MX | report only | all year |
| 001 | Chloride [as Cl] | MO AVG | report only | all year |
| 001 | Chloride [as Cl] | DAILY MX | report only | all year |
| 001 | Sulfate, total [as SO4] | MO AVG | report only | all year |
| 001 | Sulfate, total [as SO4] | 7 DA AVG | report only | all year |
| 001 | Sulfate, total [as SO4] | MO AVG | report only | all year |
| 001 | Sulfate, total [as SO4] | 7 DA AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | 30DA AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | 30DA AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | E. coli | 30DA GM | <= 126 #/100mL | all year |
| 001 | E. coli | DAILY MX | <= 410 #/100mL | all year |
| 001 | Mercury, total [as Hg] | MO AVG | <= 1.3 ng/L | all year |
| 001 | Mercury, total [as Hg] | MO AVG | <= .0000098 lb/d | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | 30DA AVG | <= 25 mg/L | Jan, Feb, Mar, Dec |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 15 mg/L | Oct, Nov |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 4 mg/L | May, Jun, Jul, Aug, Sep |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 29 mg/L | Apr |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 15 mg/L | Oct, Nov |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 29 mg/L | Apr |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 10 mg/L | May, Jun, Jul, Aug, Sep |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 10 mg/L | May, Jun, Jul, Aug, Sep |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 15 mg/L | Oct, Nov |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 40 mg/L | Jan, Feb, Mar, Dec |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 29 mg/L | Apr |
| 001 | BOD, carbonaceous [5 day, 20 C] | 30DA AVG | <= 30 lb/d | May, Jun, Jul, Aug, Sep |
| 001 | BOD, carbonaceous [5 day, 20 C] | 30DA AVG | <= 188 lb/d | Jan, Feb, Mar, Dec |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 113 lb/d | Oct, Nov |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 218 lb/d | Apr |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 75 lb/d | May, Jun, Jul, Aug, Sep |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 113 lb/d | Oct, Nov |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 218 lb/d | Apr |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 75 lb/d | May, Jun, Jul, Aug, Sep |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 113 lb/d | Oct, Nov |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 300 lb/d | Jan, Feb, Mar, Dec |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 218 lb/d | Apr |
| 001 | BOD, carbonaceous [5 day, 20 C] | 30DA AVG | report only | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | 30DA AVG | report only | all year |
| 001 | BOD, carb-5 day, 20 deg C, percent removal | MN % RMV | >= 85 % | Jan, Feb, Mar, Dec |
| 001 | Solids, suspended percent removal | MN % RMV | >= 85 % | Jan, Feb, Mar, Apr, Oct, Nov, Dec |
| 001 | Outfall observation,visual, y/n response | 7 DA AVG | report only | all year |
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