EPA Air · stack tests by county and year

Air-emissions stack tests in Warrick County, Indiana, 2026

42Stack 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 Warrick County, Indiana 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 Warrick County facility page.

Warrick County, Indiana, 2026

Air-emissions stack tests in Warrick County, other years

Air-emissions stack tests recorded in Warrick County, Indiana, 2026

Date	Facility	Kind	Agency
2026-07-31	SIGECO - FB CULLEY GENERATING STATION	Pass	State
2026-06-26	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Pass	State
2026-06-26	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Pass	State
2026-06-26	WARRICK NEWCO LLC — high-priority violation on file	Fail	State
2026-06-26	WARRICK NEWCO LLC — high-priority violation on file	Pass	State
2026-06-26	WARRICK NEWCO LLC — high-priority violation on file	Fail	State
2026-06-25	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Fail	State
2026-06-25	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Pass	State
2026-06-24	WARRICK NEWCO LLC — high-priority violation on file	Fail	State
2026-06-24	WARRICK NEWCO LLC — high-priority violation on file	Pass	State
2026-06-24	WARRICK NEWCO LLC — high-priority violation on file	Fail	State
2026-06-17	SIGECO - FB CULLEY GENERATING STATION	Pass	State
2026-05-20	WARRICK NEWCO LLC — high-priority violation on file	Pass	State
2026-05-20	WARRICK NEWCO LLC — high-priority violation on file	Pass	State
2026-05-18	SIGECO - FB CULLEY GENERATING STATION	Pass	State
2026-05-14	WARRICK NEWCO LLC — high-priority violation on file	Fail	State
2026-05-14	WARRICK NEWCO LLC — high-priority violation on file	Pass	State
2026-05-14	WARRICK NEWCO LLC — high-priority violation on file	Fail	State
2026-04-21	METZGER CONSTRUCTION COMPANY INCORPORATED	Pass	State
2026-04-21	METZGER CONSTRUCTION COMPANY INCORPORATED	Pass	State
2026-04-21	METZGER CONSTRUCTION COMPANY INCORPORATED	Pass	State
2026-04-21	METZGER CONSTRUCTION COMPANY INCORPORATED	Pass	State
2026-04-07	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Pass	State
2026-03-25	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Fail	State
2026-03-25	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Fail	State
2026-03-25	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Fail	State
2026-03-25	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Pass	State
2026-03-24	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Fail	State
2026-03-24	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Pass	State
2026-03-20	SIGECO - FB CULLEY GENERATING STATION	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	Fail	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	Pass	State
2026-02-04	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Pass	State
2026-02-02	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	Pass	State
2026-02-02	KAISER ALUMINUM WARRICK LLC — high-priority violation on file	Pass	State
2026-02-02	KAISER ALUMINUM WARRICK LLC — high-priority violation on file	Pass	State
2026-01-16	SIGECO - FB CULLEY GENERATING STATION	Pass	State
2026-01-06	ALCOA POWER GENERATING INC WARRICK POWER PLANT — 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.

What this page shows

This page covers Clean Air Act facilities in the EPA air register with stack tests in Warrick county, IN, in 2026. The stack tests recorded in 2026 total 42.