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Bituminous Coal And Lignite - Surface, Arjay, Kentucky. NPDES permit KY0112267 expired Nov 30, 2025; its limits still apply. Last 12 months: no values over a limit, 48 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Specific conductance | monthly average | report only (uS/cm) | all year | 001 |
| Specific conductance | daily maximum | report only (uS/cm) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, settleable | maximum | ≤ .5 mL/L | all year | 001 |
| Solids, settleable | maximum | ≤ .5 mL/L | all year | 001 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | 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 |
| Date of Sample Collection | value | report only (date) | all year | 001 |
| Date of Sample Collection | value | report only (date) | all year | 001 |
| Date of Storm Event | value | report only (date) | all year | 001 |
| Date of Storm Event | value | report only (date) | all year | 001 |
| Precipitation volume | maximum | report only (in/d) | all year | 001 |
| Precipitation volume | maximum | report only (in/d) | all year | 001 |
| Specific conductance | monthly average | report only (uS/cm) | all year | 002 |
| Specific conductance | daily maximum | report only (uS/cm) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, settleable | maximum | ≤ .5 mL/L | all year | 002 |
| Solids, settleable | maximum | ≤ .5 mL/L | all year | 002 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 002 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | 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 |
| Date of Sample Collection | value | report only (date) | all year | 002 |
| Date of Sample Collection | value | report only (date) | all year | 002 |
| Date of Storm Event | value | report only (date) | all year | 002 |
| Date of Storm Event | value | report only (date) | all year | 002 |
| Precipitation volume | maximum | report only (in/d) | all year | 002 |
| Precipitation volume | maximum | report only (in/d) | all year | 002 |
| Specific conductance | monthly average | report only (uS/cm) | all year | 003 |
| Specific conductance | daily maximum | report only (uS/cm) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, settleable | maximum | ≤ .5 mL/L | all year | 003 |
| Solids, settleable | maximum | ≤ .5 mL/L | all year | 003 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 003 |
| Sulfate, total [as SO4] | daily maximum | report only (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 |
| Date of Sample Collection | value | report only (date) | all year | 003 |
| Date of Sample Collection | value | report only (date) | all year | 003 |
| Date of Storm Event | value | report only (date) | all year | 003 |
| Date of Storm Event | value | report only (date) | all year | 003 |
| Precipitation volume | maximum | report only (in/d) | all year | 003 |
| Precipitation volume | maximum | report only (in/d) | all year | 003 |
Cited limits by parameter: Kentucky's rules and the federal ones.
Same industry: the 66 Coal Mining permits in Kentucky.
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Your permit document is the final word. As JSON: /api/v1/permits/KY0112267 · MCP: https://passage-data.com/mcp