Clean Water Act discharge permit · NPDES KY0082864
CINCINNATI-NORTHERN KENTUCKY INTERNATIONAL AIRPORT, Hebron, KY: NPDES KY0082864 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
CINCINNATI-NORTHERN KENTUCKY INTERNATIONAL AIRPORT, held by Cincinnati-Northern Kentucky International Airport, holds NPDES permit KY0082864, which discharges to Elijah Crk / Gunpowder Crk. EPA’s file records it issued April 19, 2016 and expiring May 31, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CINCINNATI-NORTHERN KENTUCKY INTERNATIONAL AIRPORT |
|---|---|
| Permittee as filed | Cincinnati-Northern Kentucky International Airport |
| NPDES ID | KY0082864 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 19, 2016 |
| Expiration date | May 31, 2021 |
| Address | Hebron, KY 41048 |
| Receiving water | ELIJAH CRK / GUNPOWDER CRK |
| Subwatershed | Upper Gunpowder Creek (HUC 050902030806) |
| NAICS | 488111 – Air Traffic Control |
| SIC | 4581 – Airports, Flying Fields, & Services |
| Other EPA IDs (FRS) | RCRA handler KYD980557516; ICIS-AIR source KY0000002101500148 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 12Pollutants on file
- 11Under a numeric limit
- 12With a violation of any kind
- 7With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Oxygen, dissolved [DO] | 10 | 330 | 306 | March 31, 2023 | 172% over the limit |
| Solids, total suspended | 18 | 89 | 75 | February 28, 2026 | 1,317% over the limit |
| pH | 20 | 82 | 53 | July 31, 2017 | |
| BOD, 5-day, 20 deg. C | 18 | 37 | 20 | February 28, 2026 | 99,999% over the limit |
| Oil and grease | 0 | 27 | 10 | April 30, 2008 | 348% over the limit |
| Oil & Grease | 18 | 4 | 4 | December 31, 2025 | 241% over the limit |
| Nitrogen, ammonia total [as N] | 18 | 15 | 1 | January 31, 2020 | 29% over the limit |
| Flow, in conduit or thru treatment plant | 24 | 42 | 0 | ||
| Carbon, tot organic [TOC] | 18 | 19 | 0 | ||
| Potassium, total [as K] | 18 | 16 | 0 | ||
| Ethylene glycol | 18 | 16 | 0 | ||
| Propylene glycol, total | 18 | 14 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 26, 2017 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID KY0082864 there.
Nearby on the register
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- Every permit record in Kentucky, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.