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Ball And Roller Bearings, Aurora, Ohio. NPDES permit OH0117331, in force until Dec 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | report only (SU) | all year | 001 |
| pH | daily maximum | report only (SU) | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Zinc, total recoverable | daily maximum | report only (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 |
| 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 |
| 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 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 17 Industrial and Commercial Machinery and Computer Equipment permits in Ohio.
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On EPA ECHO: Facility report · DMR history
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