NPDES permit MI0003468 · Major NON-POTW · effective, expires 2026-10-01 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31.
Reports are due about 21 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. fahrenheit | DAILY MX | report only | all year |
| 001 | Conductivity | DAILY MX | report only | all year |
| 001 | Oxygen, dissolved [DO] | DAILY MN | >= 4 mg/L | all year |
| 001 | pH | DAILY MN | >= 6.5 SU | all year |
| 001 | pH | DAILY MX | <= 9 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 20 mg/L | all year |
| 001 | Solids, total suspended | DAILY MX | <= 30 mg/L | all year |
| 001 | Solids, total suspended | MO AVG | <= 2200 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 3300 lb/d | all year |
| 001 | Sulfide, dissolved, [as S] | DAILY MX | report only | all year |
| 001 | Sulfide, dissolved, [as S] | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Outfall observation,visual, y/n response | VALUE | report only | all year |
| 002 | Temperature, water deg. fahrenheit | DAILY MX | report only | all year |
| 002 | Conductivity | DAILY MX | report only | all year |
| 002 | Oxygen, dissolved [DO] | DAILY MN | >= 4 mg/L | all year |
| 002 | pH | DAILY MN | >= 6.5 SU | all year |
| 002 | pH | DAILY MN | >= 6.5 SU | all year |
| 002 | pH | DAILY MX | <= 9 SU | all year |
| 002 | pH | DAILY MX | <= 9 SU | all year |
| 002 | Solids, total suspended | MO AVG | <= 20 mg/L | all year |
| 002 | Solids, total suspended | DAILY MX | <= 30 mg/L | all year |
| 002 | Solids, total suspended | MO AVG | <= 1300 lb/d | all year |
| 002 | Solids, total suspended | DAILY MX | <= 2000 lb/d | all year |
| 002 | Sulfide, dissolved, [as S] | DAILY MX | report only | all year |
| 002 | Sulfide, dissolved, [as S] | DAILY MX | report only | all year |
| 002 | Benzene, ethylbenzene, toluene, xylene combination | DAILY MX | <= 20 ug/L | all year |
| 002 | Benzene, ethylbenzene, toluene, xylene combination | DAILY MX | report only | all year |
| 002 | Equipment inspection - visual | VALUE | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 002 | Chlorine, total residual | DAILY MX | = 38 ug/L | all year |
| 002 | Chlorine, total residual | DA | = 200 ug/L | all year |
| 002 | Chlorine, total residual | INST MAX | = 300 ug/L | all year |
| 002 | Chlorination duration | DAILY MX | report only | all year |
| 002 | Chlorination duration | DAILY MX | = 160 min/d | all year |
| 002 | Outfall observation,visual, y/n response | VALUE | report only | all year |
| 003 | Oxygen, dissolved [DO] | DAILY MN | >= 3 mg/L | all year |
| 003 | pH | DAILY MN | >= 6.5 SU | all year |
| 003 | pH | DAILY MX | <= 9 SU | all year |
| 003 | Solids, total suspended | MO AVG | <= 20 mg/L | all year |
| 003 | Solids, total suspended | DAILY MX | <= 30 mg/L | all year |
| 003 | Solids, total suspended | MO AVG | <= 1000 lb/d | all year |
| 003 | Solids, total suspended | DAILY MX | <= 1500 lb/d | all year |
| 003 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 003 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 003 | Outfall observation,visual, y/n response | VALUE | report only | all year |
| 004 | Temperature, water deg. fahrenheit | DAILY MX | report only | all year |
| 004 | Conductivity | DAILY MX | report only | all year |
| 004 | Oxygen, dissolved [DO] | DAILY MN | >= 3 mg/L | all year |
| 004 | pH | DAILY MN | >= 6.5 SU | all year |
| 004 | pH | DAILY MX | <= 9 SU | all year |
| 004 | Solids, total suspended | MO AVG | <= 20 mg/L | all year |
| 004 | Solids, total suspended | DAILY MX | <= 30 mg/L | all year |
| 004 | Solids, total suspended | MO AVG | <= 7300 lb/d | all year |
| 004 | Solids, total suspended | DAILY MX | <= 11000 lb/d | all year |
| 004 | Sulfide, dissolved, [as S] | DAILY MX | report only | all year |
| 004 | Sulfide, dissolved, [as S] | DAILY MX | report only | all year |
| 004 | Chloride [as Cl] | DAILY MX | report only | all year |
| 004 | Sulfate, total [as SO4] | DAILY MX | report only | all year |
| 004 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 004 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 004 | Solids, total dissolved | DAILY MX | report only | all year |
| 004 | Solids, total dissolved | DAILY MX | report only | all year |
| 004 | Outfall observation,visual, y/n response | VALUE | report only | all year |
| 005 | Temperature, water deg. fahrenheit | DAILY MX | report only | all year |
| 005 | Conductivity | DAILY MX | report only | all year |
| 005 | Oxygen, dissolved [DO] | DAILY MN | >= 3 mg/L | all year |
| 005 | pH | DAILY MN | >= 6.5 SU | all year |
| 005 | pH | DAILY MX | <= 9 SU | all year |
| 005 | Solids, total suspended | MO AVG | <= 20 mg/L | all year |
| 005 | Solids, total suspended | DAILY MX | <= 30 mg/L | all year |
| 005 | Solids, total suspended | MO AVG | <= 1300 lb/d | all year |
| 005 | Solids, total suspended | DAILY MX | <= 2000 lb/d | all year |
| 005 | Sulfide, dissolved, [as S] | DAILY MX | report only | all year |
| 005 | Sulfide, dissolved, [as S] | DAILY MX | report only | all year |
| 005 | Selenium, total [as Se] | MO AVG | = 55 ug/L | all year |
| 005 | Selenium, total [as Se] | MO AVG | = 3.7 lb/d | all year |
| 005 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 005 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 005 | Outfall observation,visual, y/n response | VALUE | report only | all year |
| 006 | Oxygen, dissolved [DO] | DAILY MN | >= 3 mg/L | all year |
| 006 | pH | DAILY MN | >= 6.5 SU | all year |
| 006 | pH | DAILY MX | <= 9 SU | all year |
| 006 | Solids, total suspended | MO AVG | <= 20 mg/L | all year |
| 006 | Solids, total suspended | DAILY MX | <= 30 mg/L | all year |
| 006 | Solids, total suspended | MO AVG | <= 330 lb/d | all year |
| 006 | Solids, total suspended | DAILY MX | <= 500 lb/d | all year |
| 006 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 006 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 006 | Outfall observation,visual, y/n response | VALUE | report only | all year |
| INT | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| INT | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
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