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Airports, Flying Fields, & Services, Nashville, Tennessee. NPDES permit TN0064041, in force until Jul 31, 2030. Last 12 months: no values over a limit, 4 required values missing, 7 of 42 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| Oxygen, dissolved [DO] | minimum | ≥ 6 mg/L | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .9 mg/L | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.7 mg/L | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Oil and grease | monthly average | ≤ 10 mg/L | all year | 002 |
| Oil and grease | daily maximum | ≤ 15 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 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 3 mg/L | May–Oct | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 37.5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 4.5 mg/L | May–Oct | 002 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 002 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | > 100 % | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 002 |
| LC50 Static 48Hr Acute Pimephales promelas | minimum | > 100 % | Jan, Feb, Mar, Apr, Oct, Nov, Dec | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 003A |
| pH | maximum | ≤ 9 SU | all year | 003A |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year | 003A |
| Oil and grease | daily maximum | ≤ 15 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 |
| Total Petroleum Hydrocarbons - Diesel | daily maximum | report only (mg/L) | all year | 003A |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 003A |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 003A |
| Oil and grease visual | monthly total | report only (N=0;Y=1) | all year | 003A |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | > 100 % | all year | 003A |
| LC50 Static 48Hr Acute Pimephales promelas | minimum | > 100 % | all year | 003A |
| pH | maximum | report only (SU) | all year | 004 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 004 |
| Oil and grease | daily maximum | report only (mg/L) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 004 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 004 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | SW1 |
| pH | maximum | report only (SU) | all year | SW1 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | SW1 |
| Oil and grease | daily maximum | report only (mg/L) | all year | SW1 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | SW1 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | SW1 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | SW2 |
| pH | maximum | report only (SU) | all year | SW2 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | SW2 |
| Oil and grease | daily maximum | report only (mg/L) | all year | SW2 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | SW2 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | SW2 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | SW7 |
| pH | maximum | report only (SU) | all year | SW7 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | SW7 |
| Oil and grease | daily maximum | report only (mg/L) | all year | SW7 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | SW7 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | SW7 |
Cited limits by parameter: Tennessee's rules and the federal ones.
Same industry: the 3 Transportation by Air permits in Tennessee.
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On EPA ECHO: Facility report · DMR history
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