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Air Transportation, Scheduled, Vandalia, Ohio. NPDES permit OH0096393 expired Mar 31, 2022; its limits still apply. Last 12 months: no values over a limit, 6 of 33 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 002 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/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 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | May–Oct | 003 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Oxygen demand, chem. [low level] [COD] | monthly average | report only (mg/L) | May–Oct | 003 |
| Oxygen demand, chem. [low level] [COD] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Oxygen demand, chem. [low level] [COD] | daily maximum | report only (mg/L) | May–Oct | 003 |
| Oxygen demand, chem. [low level] [COD] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| pH | daily minimum | ≥ 6.5 SU | May–Oct | 003 |
| pH | daily minimum | ≥ 6.5 SU | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| pH | daily maximum | ≤ 9 SU | May–Oct | 003 |
| pH | daily maximum | ≤ 9 SU | Jan, Feb, Mar, Apr, Nov, Dec | 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) | May–Oct | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | May–Oct | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 017 |
| Oxygen demand, chem. [low level] [COD] | daily maximum | ≤ 200 mg/L | all year | 017 |
| pH | daily minimum | ≥ 6.5 SU | all year | 017 |
| pH | daily maximum | ≤ 9 SU | all year | 017 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 017 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 017 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 12 Transportation by Air permits in Ohio.
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