EPA Air · stack tests by county and year

Air-emissions stack tests in Lowndes County, Mississippi, 2026

34Stack 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 Lowndes County, Mississippi 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 Lowndes County facility page.

Lowndes County, Mississippi, 2026

Air-emissions stack tests in Lowndes County, other years

Air-emissions stack tests recorded in Lowndes County, Mississippi, 2026

Date	Facility	Kind	Agency
2026-05-28	GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file	Pass	State
2026-05-28	GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file	Pass	State
2026-05-14	GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file	Pass	State
2026-04-10	ALUMINUM DYNAMICS, LLC	Pass	State
2026-04-10	ALUMINUM DYNAMICS, LLC	Pass	State
2026-04-10	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-31	GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file	Pass	State
2026-03-19	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-19	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-19	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-19	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-17	ALUMINUM DYNAMICS, LLC	Fail	State
2026-03-17	ALUMINUM DYNAMICS, LLC	Fail	State
2026-03-17	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-17	ALUMINUM DYNAMICS, LLC	Fail	State
2026-03-12	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-12	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-11	GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file	Pass	State
2026-03-05	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-05	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-05	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-05	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-05	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-05	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-05	ALUMINUM DYNAMICS, LLC	Pass	State
2026-03-05	ALUMINUM DYNAMICS, LLC	Pass	State
2026-02-13	ALUMINUM DYNAMICS, LLC	Pass	State
2026-02-13	ALUMINUM DYNAMICS, LLC	Pass	State
2026-02-13	ALUMINUM DYNAMICS, LLC	Pass	State
2026-02-13	ALUMINUM DYNAMICS, LLC	Pass	State
2026-02-13	ALUMINUM DYNAMICS, LLC	Pass	State
2026-02-13	ALUMINUM DYNAMICS, LLC	Pass	State
2026-02-13	ALUMINUM DYNAMICS, LLC	Pass	State
2026-02-13	ALUMINUM DYNAMICS, LLC	Pass	State

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