EPA Air · stack tests by county and year

Air-emissions stack tests in Jefferson County, Kentucky, 2026

23Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Jefferson County, Kentucky during 2026. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Jefferson County facility page.

Jefferson County, Kentucky, 2026

Air-emissions stack tests in Jefferson County, other years

Air-emissions stack tests recorded in Jefferson County, Kentucky, 2026

Date	Facility	Kind	Agency
2026-06-11	LOUISVILLE GAS & ELECTRIC COMPANY, MILL CREEK GENERATING STATION	Pass	Local
2026-05-28	ROHM & HAAS - LOUISVILLE PLANT	Pass	Local
2026-05-27	ROHM & HAAS - LOUISVILLE PLANT	Pass	Local
2026-05-06	AMERICAN SYNTHETIC RUBBER COMPANY — high-priority violation on file	Pass	Local
2026-05-05	AMERICAN SYNTHETIC RUBBER COMPANY — high-priority violation on file	Fail	Local
2026-04-23	KOSMOS CEMENT COMPANY LLC	Pass	Local
2026-04-23	KOSMOS CEMENT COMPANY LLC	Pass	Local
2026-04-23	SWIFT PORK COMPANY	Pass	Local
2026-04-22	KOSMOS CEMENT COMPANY LLC	Pass	Local
2026-04-22	KOSMOS CEMENT COMPANY LLC	Pass	Local
2026-04-22	KOSMOS CEMENT COMPANY LLC	Pass	Local
2026-04-22	KOSMOS CEMENT COMPANY LLC	Pass	Local
2026-04-22	KOSMOS CEMENT COMPANY LLC	Pass	Local
2026-04-22	KOSMOS CEMENT COMPANY LLC	Pass	Local
2026-04-21	KOSMOS CEMENT COMPANY LLC	Pass	Local
2026-04-21	KOSMOS CEMENT COMPANY LLC	Pass	Local
2026-02-27	AMERICAN SYNTHETIC RUBBER COMPANY — high-priority violation on file	Pass	Local
2026-02-17	LOUISVILLE GAS & ELECTRIC COMPANY, MILL CREEK GENERATING STATION	Pass	Local
2026-02-11	LOUISVILLE GAS & ELECTRIC COMPANY, MILL CREEK GENERATING STATION	Pass	Local
2026-02-09	FORD MOTOR COMPANY KENTUCKY TRUCK PLANT	Pass	Local
2026-02-05	LOUISVILLE GAS & ELECTRIC COMPANY, MILL CREEK GENERATING STATION	Pass	Local
2026-02-04	LOUISVILLE GAS & ELECTRIC COMPANY, MILL CREEK GENERATING STATION	Pass	Local
2026-02-03	LOUISVILLE GAS & ELECTRIC COMPANY, MILL CREEK GENERATING STATION	Pass	Local

Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.

What this page shows

This page covers Clean Air Act facilities in the EPA air register with stack tests in Jefferson county, KY, for 2026. It lists 23 stack tests recorded in 2026.