EPA Air · stack tests by county and year

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

143Stack 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 Lake 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 Lake County facility page.

Lake County, Indiana, 2026

Air-emissions stack tests in Lake County, other years

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

Date	Facility	Kind	Agency
2026-04-16	BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file	Fail	State
2026-04-14	BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file	Pass	State
2026-04-14	BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file	Pass	State
2026-04-14	BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file	Pass	State
2026-04-14	BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file	Pass	State
2026-04-14	BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file	Pass	State
2026-04-14	BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file	Pass	State
2026-04-07	CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file	Pass	State
2026-04-07	CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file	Pass	State
2026-04-07	CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file	Pass	State
2026-04-02	BUCKEYE TERMINALS LLC EAST CHICAGO TERMINAL	Pass	State
2026-03-31	BUCKEYE TERMINALS LLC HAMMOND TERMINAL	Pass	State
2026-03-31	BUCKEYE TERMINALS LLC HAMMOND TERMINAL	Pass	State
2026-03-25	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-25	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-25	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-25	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-25	US STEEL CORPORATION GARY WORKS — high-priority violation on file	Pass	State
2026-03-25	US STEEL CORPORATION GARY WORKS — high-priority violation on file	Pass	State
2026-03-25	US STEEL CORPORATION GARY WORKS — high-priority violation on file	Pass	State
2026-03-24	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-24	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-24	US STEEL CORPORATION GARY WORKS — high-priority violation on file	Pass	State
2026-03-19	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-19	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-19	HAMMOND GROUP INCORPORATED	Pass	State
2026-03-18	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-18	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-18	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-18	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-17	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-17	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-03-17	CARMEUSE LIME INCORPORATED — high-priority violation on file	Pass	State
2026-02-18	CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file	Pass	State
2026-02-18	CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file	Pass	State
2026-02-13	MIDWEST AEROSPACE LLC — high-priority violation on file	Pass	State
2026-02-11	SILGAN CONTAINERS MANUFACTURING CORPORATION	Pass	State
2026-02-05	CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file	Pass	State
2026-02-05	CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file	Pass	State
2026-01-27	US STEEL CORPORATION GARY WORKS — high-priority violation on file	Pass	State
2026-01-27	US STEEL CORPORATION GARY WORKS — high-priority violation on file	Pass	State
2026-01-21	CARGILL INC — high-priority violation on file	Pass	State
2026-01-20	CARGILL INC — 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.