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Airports, Flying Fields, & Services, Lexington, Kentucky. NPDES permit KY0101851, in force until Oct 31, 2030. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | Solids, total suspended, daily maximum | 173 mg/L | ≤ 100 mg/L | 73% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 001 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 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 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 002 |
| Oil & Grease | monthly average | report only (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) | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 783 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 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 |
| Propylene glycol, total | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Propylene glycol, total | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| pH | minimum | ≥ 6 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 | ≤ 100 mg/L | all year | 003 |
| Oil & Grease | monthly average | report only (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) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 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 |
| pH | minimum | ≥ 6 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 | ≤ 100 mg/L | all year | 004 |
| Oil & Grease | monthly average | report only (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) | Jan, Feb, Mar, Apr, Nov, Dec | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.7 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 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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Your permit document is the final word. As JSON: /api/v1/permits/KY0101851 · MCP: https://passage-data.com/mcp