EPA Air · stack tests by county and year

Air-emissions stack tests in Butler County, Ohio, 2023

17Stack 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 Butler County, Ohio during 2023. 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 Butler County facility page.

Butler County, Ohio, 2023

Air-emissions stack tests in Butler County, other years

Air-emissions stack tests recorded in Butler County, Ohio, 2023

Date	Facility	Kind	Agency
2023-12-19	MIAMI UNIVERSITY	Pass	State
2023-12-19	MIAMI UNIVERSITY	Pass	State
2023-12-15	CLEVELAND-CLIFFS STEEL CORPORATION — high-priority violation on file	Fail	State
2023-12-14	CLEVELAND-CLIFFS STEEL CORPORATION — high-priority violation on file	Pass	State
2023-10-18	MIDDLETOWN COKE COMPANY, LLC — high-priority violation on file	Pass	State
2023-07-17	MARTIN MARIETTA AGGREGATES - FAIRFIELD	Pass	State
2023-06-23	DUKE ENERGY INDIANA, MADISON GENERATING STATION	Pass	State
2023-06-23	DUKE ENERGY INDIANA, MADISON GENERATING STATION	Pass	State
2023-06-23	DUKE ENERGY INDIANA, MADISON GENERATING STATION	Pass	State
2023-06-23	DUKE ENERGY INDIANA, MADISON GENERATING STATION	Pass	State
2023-06-23	DUKE ENERGY INDIANA, MADISON GENERATING STATION	Pass	State
2023-06-23	DUKE ENERGY INDIANA, MADISON GENERATING STATION	Pass	State
2023-06-23	DUKE ENERGY INDIANA, MADISON GENERATING STATION	Pass	State
2023-06-23	DUKE ENERGY INDIANA, MADISON GENERATING STATION	Pass	State
2023-03-08	OHIO POWER PARTNERS, LLC	Pass	State
2023-02-28	CLEVELAND-CLIFFS STEEL CORPORATION — high-priority violation on file	Pass	State
2023-01-17	CLEVELAND-CLIFFS STEEL CORPORATION — high-priority violation on file	Pass	State

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