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Coal Mining Services, Princeton, Indiana. NPDES permit IN0061786, in force until Mar 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year | 003 |
| pH | daily maximum | ≤ 9 SU | all year | 003 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 003 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 003 |
| Chloride [as Cl] | monthly average | ≤ 739 mg/L | all year | 003 |
| Chloride [as Cl] | daily maximum | ≤ 1700 mg/L | all year | 003 |
| Sulfate, total [as SO4] | monthly average | ≤ 524 mg/L | all year | 003 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1219 mg/L | all year | 003 |
| Iron, total recoverable | monthly average | ≤ 2.4 mg/L | all year | 003 |
| Iron, total recoverable | daily maximum | ≤ 5.5 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 | daily maximum | report only (MGD) | all year | 003 |
| Solids, total dissolved | monthly average | ≤ 2055 mg/L | all year | 003 |
| Solids, total dissolved | daily maximum | ≤ 4782 mg/L | all year | 003 |
| Flow, augmented water | monthly average | report only (MGD) | all year | 003 |
| Flow, augmented water | daily maximum | report only (MGD) | all year | 003 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 003 |
| pH | daily minimum | ≥ 6 SU | all year | 005 |
| pH | daily maximum | ≤ 9 SU | all year | 005 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 005 |
| Hardness, total [as CaCO3] | daily minimum | report only (mg/L) | all year | 005 |
| Chloride [as Cl] | monthly average | ≤ 739 mg/L | all year | 005 |
| Chloride [as Cl] | daily maximum | ≤ 1700 mg/L | all year | 005 |
| Sulfate, total [as SO4] | monthly average | ≤ 524 mg/L | all year | 005 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1219 mg/L | all year | 005 |
| Iron, total recoverable | monthly average | ≤ 2.4 mg/L | all year | 005 |
| Iron, total recoverable | daily maximum | ≤ 5.5 mg/L | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Solids, total dissolved | monthly average | ≤ 2055 mg/L | all year | 005 |
| Solids, total dissolved | daily maximum | ≤ 4782 mg/L | all year | 005 |
| Flow, augmented water | monthly average | report only (MGD) | all year | 005 |
| Flow, augmented water | daily maximum | report only (MGD) | all year | 005 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 005 |
| pH | daily minimum | ≥ 6 SU | all year | 006 |
| pH | daily maximum | ≤ 9 SU | all year | 006 |
| Solids, total suspended | monthly average | ≤ 12 mg/L | all year | 006 |
| Solids, total suspended | maximum weekly average | ≤ 18 mg/L | all year | 006 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.1 mg/L | May–Nov | 006 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.6 mg/L | Jan, Feb, Mar, Apr, Dec | 006 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 1.6 mg/L | May–Nov | 006 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2.4 mg/L | Jan, Feb, Mar, Apr, Dec | 006 |
| Phosphorus, total [as P] | monthly average | ≤ 1 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 | maximum weekly average | report only (MGD) | all year | 006 |
| Chlorine, total residual | monthly average | < .06 mg/L | Apr–Oct | 006 |
| Chlorine, total residual | daily maximum | < .06 mg/L | Apr–Oct | 006 |
| Chlorine, total residual | daily minimum | ≥ .5 mg/L | Apr–Oct | 006 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct | 006 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 006 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year | 006 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 15 mg/L | all year | 006 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 006 |
| Chloride [as Cl] | monthly average | ≤ 12334 lb/d | all year | 100 |
| Chloride [as Cl] | daily maximum | ≤ 28000 lb/d | all year | 100 |
| Sulfate, total [as SO4] | monthly average | ≤ 8746 lb/d | all year | 100 |
| Sulfate, total [as SO4] | daily maximum | ≤ 20345 lb/d | all year | 100 |
| Iron, total recoverable | monthly average | ≤ 40 lb/d | all year | 100 |
| Iron, total recoverable | daily maximum | ≤ 92 lb/d | all year | 100 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 100 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 2 MGD | all year | 100 |
| pH | daily minimum | ≥ 6 SU | all year | 103 |
| pH | daily maximum | ≤ 9 SU | all year | 103 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 103 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 103 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 103 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 103 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 103 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 103 |
| pH | daily minimum | ≥ 6 SU | all year | 105 |
| pH | daily maximum | ≤ 9 SU | all year | 105 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 105 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 105 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 105 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 105 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 105 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 105 |
Cited limits by parameter: Indiana's rules and the federal ones.
Same industry: the 38 Coal Mining permits in Indiana.
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Your permit document is the final word. As JSON: /api/v1/permits/IN0061786 · MCP: https://passage-data.com/mcp