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Bituminous Coal And Lignite - Surface, Hamden, Ohio. NPDES permit OH0076431 expired Jan 31, 2025; its limits still apply. Last 12 months: no values over a limit, 858 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Cobalt, total recoverable | monthly average | ≤ 24 ug/L | all year | 001 |
| Cobalt, total recoverable | daily maximum | ≤ 220 ug/L | all year | 001 |
| Iron, total [as Fe] | monthly average | ≤ 3000 ug/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 6000 ug/L | all year | 001 |
| Manganese, total [as Mn] | monthly average | ≤ 2000 ug/L | all year | 001 |
| Manganese, total [as Mn] | daily maximum | ≤ 4000 ug/L | all year | 001 |
| Nickel, total recoverable | monthly average | ≤ 31 ug/L | all year | 001 |
| Nickel, total recoverable | daily maximum | ≤ 280 ug/L | all year | 001 |
| Zinc, total recoverable | daily maximum | ≤ 71 ug/L | all year | 001 |
| Aluminum, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Copper, total recoverable | monthly average | ≤ 5.5 ug/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ 7.8 ug/L | all year | 001 |
| Rainfall | monthly average | report only (in) | all year | 001 |
| Rainfall | daily maximum | report only (in) | 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 |
| Mercury, total low level | monthly average | ≤ 12 ng/L | Mar, Jun, Sep, Dec | 001 |
| Mercury, total low level | daily maximum | ≤ 1700 ng/L | Mar, Jun, Sep, Dec | 001 |
| Solids, total dissolved- 180 deg. C | monthly average | ≤ 1500 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 002 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Cobalt, total recoverable | monthly average | ≤ 24 ug/L | all year | 002 |
| Cobalt, total recoverable | daily maximum | ≤ 220 ug/L | all year | 002 |
| Iron, total [as Fe] | monthly average | ≤ 3000 ug/L | all year | 002 |
| Iron, total [as Fe] | daily maximum | ≤ 6000 ug/L | all year | 002 |
| Manganese, total [as Mn] | monthly average | ≤ 2000 ug/L | all year | 002 |
| Manganese, total [as Mn] | daily maximum | ≤ 4000 ug/L | all year | 002 |
| Nickel, total recoverable | monthly average | ≤ 31 ug/L | all year | 002 |
| Nickel, total recoverable | daily maximum | ≤ 280 ug/L | all year | 002 |
| Zinc, total recoverable | daily maximum | ≤ 71 ug/L | all year | 002 |
| Aluminum, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total recoverable | monthly average | ≤ 5.5 ug/L | all year | 002 |
| Copper, total recoverable | daily maximum | ≤ 7.8 ug/L | all year | 002 |
| Rainfall | monthly average | report only (in) | all year | 002 |
| Rainfall | daily maximum | report only (in) | 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 |
| Mercury, total low level | monthly average | ≤ 12 ng/L | Mar, Jun, Sep, Dec | 002 |
| Mercury, total low level | daily maximum | ≤ 1700 ng/L | Mar, Jun, Sep, Dec | 002 |
| Solids, total dissolved- 180 deg. C | monthly average | ≤ 1500 mg/L | all year | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 003 |
| pH | daily maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | 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 |
| Cobalt, total recoverable | monthly average | ≤ 24 ug/L | all year | 003 |
| Cobalt, total recoverable | daily maximum | ≤ 220 ug/L | all year | 003 |
| Iron, total [as Fe] | monthly average | ≤ 3000 ug/L | all year | 003 |
| Iron, total [as Fe] | daily maximum | ≤ 6000 ug/L | all year | 003 |
| Manganese, total [as Mn] | monthly average | ≤ 2000 ug/L | all year | 003 |
| Manganese, total [as Mn] | daily maximum | ≤ 4000 ug/L | all year | 003 |
| Nickel, total recoverable | monthly average | ≤ 31 ug/L | all year | 003 |
| Nickel, total recoverable | daily maximum | ≤ 280 ug/L | all year | 003 |
| Zinc, total recoverable | daily maximum | ≤ 71 ug/L | all year | 003 |
| Aluminum, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Copper, total recoverable | monthly average | ≤ 5.5 ug/L | all year | 003 |
| Copper, total recoverable | daily maximum | ≤ 7.8 ug/L | all year | 003 |
| Rainfall | monthly average | report only (in) | all year | 003 |
| Rainfall | daily maximum | report only (in) | 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 |
| Mercury, total low level | monthly average | ≤ 12 ng/L | Mar, Jun, Sep, Dec | 003 |
| Mercury, total low level | daily maximum | ≤ 1700 ng/L | Mar, Jun, Sep, Dec | 003 |
| Solids, total dissolved- 180 deg. C | monthly average | ≤ 1500 mg/L | all year | 003 |
| pH | daily minimum | report only (SU) | all year | 601 |
| pH | daily maximum | report only (SU) | all year | 601 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 601 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 601 |
| Iron, total [as Fe] | monthly average | report only (ug/L) | all year | 601 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 601 |
| Manganese, total [as Mn] | monthly average | report only (ug/L) | all year | 601 |
| Manganese, total [as Mn] | daily maximum | report only (ug/L) | all year | 601 |
| Rainfall | monthly average | report only (in) | all year | 601 |
| Rainfall | daily maximum | report only (in) | all year | 601 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 601 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 601 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 38 Coal Mining permits in Ohio.
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Your permit document is the final word. As JSON: /api/v1/permits/OH0076431 · MCP: https://passage-data.com/mcp