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Airports, Flying Fields, & Services, Columbus, Ohio. NPDES permit OH0081639, in force until Oct 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | Jun, Aug | 003 |
| pH | daily minimum | ≥ 6.5 SU | all year | 003 |
| pH | daily maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Oil and grease, hexane extr method | monthly average | ≤ 15 mg/L | all year | 003 |
| Oil and grease, hexane extr method | daily maximum | ≤ 20 mg/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) | 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 |
| Propylene glycol, total | monthly average | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Propylene glycol, total | daily maximum | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Ethylene glycol | monthly average | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Ethylene glycol | daily maximum | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | Jun, Aug | 003 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | Jun, Aug | 003 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 004 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | Jun, Aug | 004 |
| pH | daily minimum | ≥ 6.5 SU | all year | 004 |
| pH | daily maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 004 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 004 |
| Oil and grease, hexane extr method | monthly average | ≤ 15 mg/L | all year | 004 |
| Oil and grease, hexane extr method | daily maximum | ≤ 20 mg/L | all year | 004 |
| Rainfall | monthly average | report only (in) | all year | 004 |
| Rainfall | daily maximum | report only (in) | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | May–Oct | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Jan, Feb, Mar, Apr, Nov, Dec | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | May–Oct | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Jan, Feb, Mar, Apr, Nov, Dec | 004 |
| Propylene glycol, total | monthly average | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 004 |
| Propylene glycol, total | daily maximum | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 004 |
| Ethylene glycol | monthly average | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 004 |
| Ethylene glycol | daily maximum | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 004 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | Jun, Aug | 004 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 004 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | Jun, Aug | 004 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 004 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | Jun, Aug | 010 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 010 |
| pH | daily minimum | ≥ 6.5 SU | all year | 010 |
| pH | daily maximum | ≤ 9 SU | all year | 010 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 010 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 010 |
| Oil and grease, hexane extr method | monthly average | ≤ 15 mg/L | all year | 010 |
| Oil and grease, hexane extr method | daily maximum | ≤ 20 mg/L | all year | 010 |
| Rainfall | monthly average | report only (in) | all year | 010 |
| Rainfall | daily maximum | report only (in) | all year | 010 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| Propylene glycol, total | monthly average | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 010 |
| Propylene glycol, total | daily maximum | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 010 |
| Ethylene glycol | monthly average | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 010 |
| Ethylene glycol | daily maximum | report only (ug/L) | Jan, Feb, Mar, Apr, Nov, Dec | 010 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | Jun, Aug | 010 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 010 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | Jun, Aug | 010 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 010 |
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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