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Nonclassifiable Establishments, Powhatan Point, Ohio. NPDES permit OH0099660, in force until Jul 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Flow rate | monthly average | report only (gal/d) | all year | 002 |
| Flow rate | daily maximum | report only (gal/d) | all year | 002 |
| 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 |
| 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 |
| Rainfall | monthly average | report only (in) | all year | 002 |
| Rainfall | daily maximum | report only (in) | all year | 002 |
| Flow rate | monthly average | report only (gal/d) | all year | 003 |
| Flow rate | daily maximum | report only (gal/d) | all year | 003 |
| 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 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 003 |
| Chloride [as Cl] | daily maximum | report only (mg/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 |
| 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 |
| Rainfall | monthly average | report only (in) | all year | 003 |
| Rainfall | daily maximum | report only (in) | all year | 003 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 003 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 003 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 003 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 003 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 98 Nonclassifiable Establishments permits in Ohio.
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Your permit document is the final word. As JSON: /api/v1/permits/OH0099660 · MCP: https://passage-data.com/mcp