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Bituminous Coal And Lignite - Surface, Oakland City, Indiana. NPDES permit ING040217, in force until Aug 31, 2031. Last 12 months: over a limit 2 times (last November 2025). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Iron, total [as Fe], daily average | 3.188 mg/L | ≤ 3 mg/L | 6% |
| November 2025 | Iron, total [as Fe], daily maximum | 9.3 mg/L | ≤ 6 mg/L | 55% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, settleable | daily average | report only (mL/L) | all year | 001 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 001 |
| Copper, total [as Cu] | daily average | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | daily average | ≤ 3 mg/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 001 |
| Manganese, total [as Mn] | daily average | ≤ 2 mg/L | all year | 001 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 mg/L | all year | 001 |
| Nickel, total [as Ni] | daily average | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily average | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Aluminum, total [as Al] | daily average | report only (mg/L) | all year | 001 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 001 |
| Duration | monthly total | report only (d/mo) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Precipitation volume | monthly total | report only (in/mo) | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | daily average | ≤ 35 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 002 |
| Solids, settleable | daily average | report only (mL/L) | all year | 002 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 002 |
| Iron, total [as Fe] | daily average | ≤ 3 mg/L | all year | 002 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 002 |
| Duration | monthly total | report only (d/mo) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Precipitation volume | monthly total | report only (in/mo) | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 007 |
| pH | daily maximum | ≤ 9 SU | all year | 007 |
| Solids, total suspended | daily average | ≤ 35 mg/L | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 007 |
| Solids, settleable | daily average | report only (mL/L) | all year | 007 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 007 |
| Iron, total [as Fe] | daily average | ≤ 3 mg/L | all year | 007 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 007 |
| Duration | monthly total | report only (d/mo) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Precipitation volume | monthly total | report only (in/mo) | all year | 007 |
| pH | daily minimum | ≥ 6 SU | all year | 008 |
| pH | daily maximum | ≤ 9 SU | all year | 008 |
| Solids, total suspended | daily average | ≤ 35 mg/L | all year | 008 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 008 |
| Solids, settleable | daily average | report only (mL/L) | all year | 008 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 008 |
| Iron, total [as Fe] | daily average | ≤ 3 mg/L | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 008 |
| Duration | monthly total | report only (d/mo) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| Precipitation volume | monthly total | report only (in/mo) | all year | 008 |
| pH | daily minimum | ≥ 6 SU | all year | 009 |
| pH | daily maximum | ≤ 9 SU | all year | 009 |
| Solids, total suspended | daily average | ≤ 35 mg/L | all year | 009 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 009 |
| Solids, settleable | daily average | report only (mL/L) | all year | 009 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 009 |
| Iron, total [as Fe] | daily average | ≤ 3 mg/L | all year | 009 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 009 |
| Duration | monthly total | report only (d/mo) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Precipitation volume | monthly total | report only (in/mo) | all year | 009 |
| pH | daily minimum | ≥ 6 SU | all year | 020 |
| pH | daily maximum | ≤ 9 SU | all year | 020 |
| Solids, total suspended | daily average | ≤ 35 mg/L | all year | 020 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 020 |
| Solids, settleable | daily average | report only (mL/L) | all year | 020 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 020 |
| Iron, total [as Fe] | daily average | ≤ 3 mg/L | all year | 020 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 020 |
| Duration | monthly total | report only (d/mo) | all year | 020 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 020 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 020 |
| Precipitation volume | monthly total | report only (in/mo) | all year | 020 |
Cited limits by parameter: Indiana's rules and the federal ones.
Same industry: the 38 Coal Mining permits in Indiana.
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