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Bituminous Coal - Underground, Keensburg, Illinois. NPDES permit IL0036960 expired Mar 31, 2022; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | quarterly minimum | ≥ 6 SU | all year | 001 |
| pH | quarterly minimum | ≥ 6 SU | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | quarterly minimum | ≥ 6 SU | all year | 001 |
| pH | quarterly minimum | ≥ 6 SU | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | quarterly maximum | ≤ 9 SU | all year | 001 |
| pH | quarterly maximum | ≤ 9 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| pH | quarterly maximum | ≤ 9 SU | all year | 001 |
| pH | quarterly maximum | ≤ 9 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 001 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 001 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 001 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 001 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 001 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 001 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 001 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 001 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 001 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 001 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1712 mg/L | all year | 001 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1712 mg/L | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1712 mg/L | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1712 mg/L | all year | 001 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1712 mg/L | all year | 001 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1712 mg/L | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1712 mg/L | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1712 mg/L | all year | 001 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 001 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 001 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 001 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 001 |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year | 001 |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year | 001 |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year | 001 |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Chloride [as Cl] | daily maximum | ≤ 12000 mg/L | all year | 002 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1600 mg/L | all year | 002 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 002 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 002 |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 003 |
| pH | quarterly minimum | ≥ 6 SU | all year | 003 |
| pH | quarterly minimum | ≥ 6 SU | all year | 003 |
| pH | minimum | ≥ 6.5 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| pH | quarterly maximum | ≤ 9 SU | all year | 003 |
| pH | quarterly maximum | ≤ 9 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 003 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 003 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 003 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 003 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 003 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 003 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 003 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 003 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 003 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 003 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 003 |
| Sulfate, total [as SO4] | daily maximum | ≤ 2157 mg/L | all year | 003 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 2157 mg/L | all year | 003 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 2157 mg/L | all year | 003 |
| Sulfate, total [as SO4] | daily maximum | ≤ 2157 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| pH | quarterly minimum | ≥ 6 SU | all year | 006 |
| pH | minimum | ≥ 6.5 SU | all year | 006 |
| pH | quarterly minimum | ≥ 6 SU | all year | 006 |
| pH | minimum | ≥ 6.5 SU | all year | 006 |
| pH | quarterly maximum | ≤ 9 SU | all year | 006 |
| pH | maximum | ≤ 9 SU | all year | 006 |
| pH | quarterly maximum | ≤ 9 SU | all year | 006 |
| pH | maximum | ≤ 9 SU | all year | 006 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 006 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 006 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 006 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 006 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 006 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 006 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 006 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 006 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 006 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 006 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 006 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 006 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 006 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 006 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 006 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 006 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 006 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1712 mg/L | all year | 006 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1712 mg/L | all year | 006 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1712 mg/L | all year | 006 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1712 mg/L | all year | 006 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 006 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 006 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 006 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| pH | minimum | ≥ 6.5 SU | all year | 007 |
| pH | quarterly minimum | ≥ 6 SU | all year | 007 |
| pH | minimum | ≥ 6.5 SU | all year | 007 |
| pH | quarterly minimum | ≥ 6 SU | all year | 007 |
| pH | maximum | ≤ 9 SU | all year | 007 |
| pH | quarterly maximum | ≤ 9 SU | all year | 007 |
| pH | maximum | ≤ 9 SU | all year | 007 |
| pH | quarterly maximum | ≤ 9 SU | all year | 007 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 007 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 007 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 007 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 007 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 007 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 007 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 007 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 007 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 007 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 007 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 007 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 007 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 007 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 007 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 007 |
| Sulfate, total [as SO4] | daily maximum | ≤ 2000 mg/L | all year | 007 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 2000 mg/L | all year | 007 |
| Sulfate, total [as SO4] | daily maximum | ≤ 2000 mg/L | all year | 007 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 2000 mg/L | all year | 007 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 007 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 007 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 007 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| pH | minimum | ≥ 6.5 SU | all year | 008 |
| pH | quarterly minimum | ≥ 6 SU | all year | 008 |
| pH | quarterly minimum | ≥ 6 SU | all year | 008 |
| pH | minimum | ≥ 6.5 SU | all year | 008 |
| pH | maximum | ≤ 9 SU | all year | 008 |
| pH | quarterly maximum | ≤ 9 SU | all year | 008 |
| pH | quarterly maximum | ≤ 9 SU | all year | 008 |
| pH | maximum | ≤ 9 SU | all year | 008 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 008 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 008 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 008 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 008 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 008 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 008 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 008 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 008 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 008 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 008 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 008 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 008 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 008 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 008 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 008 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 008 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 008 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1612 mg/L | all year | 008 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1612 mg/L | all year | 008 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1612 mg/L | all year | 008 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1612 mg/L | all year | 008 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 008 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 008 |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year | 008 |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| pH | minimum | ≥ 6.5 SU | all year | 009 |
| pH | quarterly minimum | ≥ 6 SU | all year | 009 |
| pH | minimum | ≥ 6.5 SU | all year | 009 |
| pH | quarterly minimum | ≥ 6 SU | all year | 009 |
| pH | maximum | ≤ 9 SU | all year | 009 |
| pH | quarterly maximum | ≤ 9 SU | all year | 009 |
| pH | maximum | ≤ 9 SU | all year | 009 |
| pH | quarterly maximum | ≤ 9 SU | all year | 009 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 009 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 009 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 009 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 009 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 009 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 009 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 009 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 009 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 009 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 009 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 009 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 009 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 009 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 009 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 009 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 009 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 009 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1884 mg/L | all year | 009 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1884 mg/L | all year | 009 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1884 mg/L | all year | 009 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1884 mg/L | all year | 009 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 009 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 009 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 009 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 009 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| pH | quarterly minimum | ≥ 6 SU | all year | 010 |
| pH | minimum | ≥ 6.5 SU | all year | 010 |
| pH | quarterly minimum | ≥ 6 SU | all year | 010 |
| pH | minimum | ≥ 6.5 SU | all year | 010 |
| pH | quarterly maximum | ≤ 9 SU | all year | 010 |
| pH | maximum | ≤ 9 SU | all year | 010 |
| pH | quarterly maximum | ≤ 9 SU | all year | 010 |
| pH | maximum | ≤ 9 SU | all year | 010 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 010 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 010 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 010 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 010 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 010 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 010 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 010 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 010 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 010 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 010 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 010 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 010 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 010 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 010 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 010 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 010 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 010 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1533 mg/L | all year | 010 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1533 mg/L | all year | 010 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1533 mg/L | all year | 010 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1533 mg/L | all year | 010 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 010 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 010 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 010 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 010 |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year | 010 |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| pH | quarterly minimum | ≥ 6 SU | all year | 011 |
| pH | minimum | ≥ 6.5 SU | all year | 011 |
| pH | quarterly minimum | ≥ 6 SU | all year | 011 |
| pH | minimum | ≥ 6.5 SU | all year | 011 |
| pH | quarterly maximum | ≤ 9 SU | all year | 011 |
| pH | maximum | ≤ 9 SU | all year | 011 |
| pH | quarterly maximum | ≤ 9 SU | all year | 011 |
| pH | maximum | ≤ 9 SU | all year | 011 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 011 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 011 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 011 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 011 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 011 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 011 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 011 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 011 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 011 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 011 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 011 |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year | 011 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 011 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 011 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 011 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 011 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 011 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 2390 mg/L | all year | 011 |
| Sulfate, total [as SO4] | daily maximum | ≤ 2390 mg/L | all year | 011 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 2390 mg/L | all year | 011 |
| Sulfate, total [as SO4] | daily maximum | ≤ 2390 mg/L | all year | 011 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 011 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 011 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 011 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 011 |
| Manganese, total [as Mn] | 30-day average | ≤ 2 mg/L | all year | 011 |
| Manganese, total [as Mn] | 30-day average | ≤ 2 mg/L | all year | 011 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 mg/L | all year | 011 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 mg/L | all year | 011 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| pH | monthly minimum | ≥ 6 SU | all year | A01 |
| pH | monthly maximum | ≤ 9 SU | all year | A01 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | A01 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | A01 |
| Solids, total suspended | 30-day average | ≤ 8.86 lb/d | all year | A01 |
| Solids, total suspended | daily maximum | ≤ 17.72 lb/d | all year | A01 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | A01 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | A01 |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 25 mg/L | all year | A01 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 50 mg/L | all year | A01 |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 10.63 lb/d | all year | A01 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 21.26 lb/d | all year | A01 |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 56 Coal Mining permits in Illinois.
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Your permit document is the final word. As JSON: /api/v1/permits/IL0036960 · MCP: https://passage-data.com/mcp