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Bituminous Coal - Underground, Hillsboro, Illinois. NPDES permit IL0080039 expired Jan 31, 2020; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year | 008 |
| 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 | quarterly minimum | ≥ 6 SU | all year | 008 |
| pH | quarterly minimum | ≥ 6 SU | all year | 008 |
| pH | minimum | ≥ 6.5 SU | all year | 008 |
| pH | minimum | ≥ 6.5 SU | all year | 008 |
| pH | maximum | ≤ 9 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 | quarterly maximum | ≤ 9 SU | all year | 008 |
| pH | quarterly maximum | ≤ 9 SU | all year | 008 |
| pH | 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 |
| 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 |
| 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 | 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, 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 |
| 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] | 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] | 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 |
| 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] | 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] | 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 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 008 |
| Sulfate, total [as SO4] | daily maximum | ≤ 837 mg/L | all year | 008 |
| Sulfate, total [as SO4] | daily maximum | ≤ 837 mg/L | all year | 008 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 837 mg/L | all year | 008 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 837 mg/L | all year | 008 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 837 mg/L | all year | 008 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 837 mg/L | all year | 008 |
| Sulfate, total [as SO4] | daily maximum | ≤ 837 mg/L | all year | 008 |
| Sulfate, total [as SO4] | daily maximum | ≤ 837 mg/L | all year | 008 |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year | 008 |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year | 008 |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year | 008 |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 008 |
| Manganese, total [as Mn] | 30-day average | ≤ 2 mg/L | all year | 008 |
| Manganese, total [as Mn] | 30-day average | ≤ 2 mg/L | all year | 008 |
| Manganese, total [as Mn] | 30-day average | ≤ 2 mg/L | all year | 008 |
| Manganese, total [as Mn] | 30-day average | ≤ 2 mg/L | all year | 008 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 mg/L | all year | 008 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 mg/L | all year | 008 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 mg/L | all year | 008 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 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 | 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 |
| 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 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 008 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 008 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 008 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 008 |
| pH | minimum | ≥ 6.5 SU | all year | 009 |
| pH | minimum | ≥ 6.5 SU | all year | 009 |
| pH | quarterly minimum | ≥ 6 SU | all year | 009 |
| pH | quarterly minimum | ≥ 6 SU | all year | 009 |
| pH | quarterly minimum | ≥ 6 SU | all year | 009 |
| pH | quarterly minimum | ≥ 6 SU | all year | 009 |
| pH | minimum | ≥ 6.5 SU | all year | 009 |
| pH | minimum | ≥ 6.5 SU | all year | 009 |
| pH | maximum | ≤ 9 SU | all year | 009 |
| pH | maximum | ≤ 9 SU | all year | 009 |
| pH | quarterly maximum | ≤ 9 SU | all year | 009 |
| pH | quarterly maximum | ≤ 9 SU | all year | 009 |
| pH | quarterly maximum | ≤ 9 SU | all year | 009 |
| pH | quarterly maximum | ≤ 9 SU | all year | 009 |
| pH | maximum | ≤ 9 SU | all year | 009 |
| pH | 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 |
| 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 |
| 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 | 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, 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 |
| 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] | 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] | quarterly 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] | 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] | daily maximum | report only (mg/L) | all year | 009 |
| Chloride [as Cl] | daily 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 |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year | 009 |
| Chloride [as Cl] | quarterly 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] | daily maximum | ≤ 500 mg/L | all year | 009 |
| Sulfate, total [as SO4] | daily maximum | ≤ 837 mg/L | all year | 009 |
| Sulfate, total [as SO4] | daily maximum | ≤ 837 mg/L | all year | 009 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 837 mg/L | all year | 009 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 837 mg/L | all year | 009 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 837 mg/L | all year | 009 |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 837 mg/L | all year | 009 |
| Sulfate, total [as SO4] | daily maximum | ≤ 837 mg/L | all year | 009 |
| Sulfate, total [as SO4] | daily maximum | ≤ 837 mg/L | all year | 009 |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year | 009 |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year | 009 |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year | 009 |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year | 009 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 009 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 009 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 009 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 009 |
| Manganese, total [as Mn] | 30-day average | ≤ 2 mg/L | all year | 009 |
| Manganese, total [as Mn] | 30-day average | ≤ 2 mg/L | all year | 009 |
| Manganese, total [as Mn] | 30-day average | ≤ 2 mg/L | all year | 009 |
| Manganese, total [as Mn] | 30-day average | ≤ 2 mg/L | all year | 009 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 mg/L | all year | 009 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 mg/L | all year | 009 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 mg/L | all year | 009 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 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 | 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 |
| 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 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 009 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 009 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 009 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 009 |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 56 Coal Mining permits in Illinois.
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