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Airports, Flying Fields, & Services, Louisville, Kentucky. NPDES permit KY0092185, in force until Jan 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 002 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 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 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 003 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | daily maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 003 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 003 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 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 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 003A |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 003A |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 003A |
| pH | minimum | ≥ 6 SU | all year | 003A |
| pH | daily maximum | ≤ 9 SU | all year | 003A |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 003A |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 003A |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 003A |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003A |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 003A |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 mg/L | all year | 003A |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003A |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 003B |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 003B |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 003B |
| pH | minimum | ≥ 6 SU | all year | 003B |
| pH | daily maximum | ≤ 9 SU | all year | 003B |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 003B |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 003B |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 003B |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003B |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 003B |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 mg/L | all year | 003B |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003B |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003B |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 003C |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 003C |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 003C |
| pH | minimum | ≥ 6 SU | all year | 003C |
| pH | daily maximum | ≤ 9 SU | all year | 003C |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 003C |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 003C |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 003C |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003C |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 003C |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 mg/L | all year | 003C |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003C |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003C |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 004 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 004 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | daily maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 004 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 004 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
Cited limits by parameter: Kentucky's rules and the federal ones.
Same industry: the 8 Transportation by Air permits in Kentucky.
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