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Bituminous Coal - Underground, Sesser, Illinois. NPDES permit IL0036021 expired Jan 31, 2005; its limits still apply. Last 12 months: over a limit 2 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| May 2026 | Solids, total suspended, 30-day average | 76.3 mg/L | ≤ 35 mg/L | 118% |
| May 2026 | Solids, total suspended, daily maximum | 97 mg/L | ≤ 70 mg/L | 39% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | quarterly minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| pH | quarterly maximum | ≤ 9 SU | all year | 003 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 003 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 003 |
| Solids, total suspended | monthly minimum | report only (mg/L) | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 003 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 003 |
| Chloride [as Cl] | monthly minimum | report only (mg/L) | all year | 003 |
| Chloride [as Cl] | 30-day average | report only (mg/L) | all year | 003 |
| Chloride [as Cl] | daily maximum | ≤ 2400 mg/L | all year | 003 |
| Iron, total [as Fe] | monthly minimum | report only (mg/L) | all year | 003 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 003 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | quarterly minimum | ≥ 6 SU | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| pH | quarterly maximum | ≤ 9 SU | all year | 005 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 005 |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 005 |
| Solids, total suspended | monthly minimum | report only (mg/L) | all year | 005 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 005 |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year | 005 |
| Iron, total [as Fe] | monthly minimum | report only (mg/L) | all year | 005 |
| Iron, total [as Fe] | 30-day average | ≤ 3.5 mg/L | all year | 005 |
| Iron, total [as Fe] | daily maximum | ≤ 7 mg/L | all year | 005 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 008 |
| pH | quarterly minimum | ≥ 6 SU | all year | 008 |
| pH | maximum | ≤ 9 SU | all year | 008 |
| pH | quarterly maximum | ≤ 9 SU | 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 |
| Solids, total suspended | monthly minimum | report only (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, settleable | quarterly maximum | ≤ .5 mL/L | all year | 008 |
| Chloride [as Cl] | monthly minimum | report only (mg/L) | all year | 008 |
| Chloride [as Cl] | 30-day average | report only (mg/L) | all year | 008 |
| Chloride [as Cl] | daily maximum | ≤ 1000 mg/L | all year | 008 |
| Sulfate, total [as SO4] | monthly minimum | report only (mg/L) | all year | 008 |
| Sulfate, total [as SO4] | 30-day average | report only (mg/L) | all year | 008 |
| Sulfate, total [as SO4] | daily maximum | ≤ 3500 mg/L | all year | 008 |
| Iron, total [as Fe] | monthly minimum | report only (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 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| pH | minimum | ≥ 6 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 |
| 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 |
| Solids, total suspended | monthly minimum | report only (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, settleable | quarterly maximum | ≤ .5 mL/L | all year | 009 |
| Chloride [as Cl] | monthly minimum | report only (mg/L) | all year | 009 |
| Chloride [as Cl] | 30-day average | report only (mg/L) | all year | 009 |
| Chloride [as Cl] | daily maximum | ≤ 1000 mg/L | all year | 009 |
| Sulfate, total [as SO4] | monthly minimum | report only (mg/L) | all year | 009 |
| Sulfate, total [as SO4] | 30-day average | report only (mg/L) | all year | 009 |
| Sulfate, total [as SO4] | daily maximum | ≤ 3500 mg/L | all year | 009 |
| Iron, total [as Fe] | monthly minimum | report only (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 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| pH | minimum | ≥ 6 SU | all year | 03A |
| pH | maximum | ≤ 9 SU | all year | 03A |
| Solids, total suspended | monthly minimum | report only (mg/L) | all year | 03A |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 03A |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 03A |
| Solids, total suspended | 30-day average | ≤ 2.5 lb/d | all year | 03A |
| Solids, total suspended | daily maximum | ≤ 5 lb/d | all year | 03A |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 03A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 03A |
| Chlorine, total residual | monthly minimum | report only (mg/L) | all year | 03A |
| Chlorine, total residual | 30-day average | report only (mg/L) | all year | 03A |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 03A |
| BOD, carbonaceous [5 day, 20 C] | monthly minimum | report only (mg/L) | all year | 03A |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 25 mg/L | all year | 03A |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 50 mg/L | all year | 03A |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 2.1 lb/d | all year | 03A |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 4.2 lb/d | all year | 03A |
| pH | minimum | ≥ 6 SU | all year | 06A |
| pH | maximum | ≤ 9 SU | all year | 06A |
| Solids, total suspended | monthly minimum | report only (mg/L) | all year | 06A |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 06A |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 06A |
| Solids, total suspended | 30-day average | ≤ 3.1 lb/d | all year | 06A |
| Solids, total suspended | daily maximum | ≤ 6.2 lb/d | all year | 06A |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 06A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 06A |
| Chlorine, total residual | monthly minimum | report only (mg/L) | all year | 06A |
| Chlorine, total residual | 30-day average | report only (mg/L) | all year | 06A |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 06A |
| BOD, carbonaceous [5 day, 20 C] | monthly minimum | report only (mg/L) | all year | 06A |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 25 mg/L | all year | 06A |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 50 mg/L | all year | 06A |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 2.6 lb/d | all year | 06A |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 5.2 lb/d | all year | 06A |
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/IL0036021 · MCP: https://passage-data.com/mcp