EPA Air · stack tests by state and year

Air-emissions stack tests in Louisiana, 2026

26Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Louisiana during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in Louisiana, 2026

Louisiana, other years

Air-emissions stack tests recorded in Louisiana, 2026

Date	Facility	Where	Kind	Agency
2026-07-06	CHENIERE CREOLE TRAIL PIPELINE LP - GILLIS COMPRESSOR STATION	RAGLEY, Beauregard, LA	Pass	State
2026-07-02	ET GATHERING & PROCESSING LLC - CLEAR LAKE AMINE PLANT	SHREVEPORT, Caddo, LA	Pass	State
2026-07-01	HOLLY COMMON POINT #3 COMPRESSOR STATION	GRAND CANE, De Soto, LA	Pass	State
2026-04-07	SUGARBERRY SOUTH FACILITY	BUTTE LAROSE, St. Martin, LA	Pass	State
2026-03-12	NEW GENERATION GAS GATHERING LLC - GROVE HILL BOOSTER STATION	PLEASANT HILL, Sabine, LA	Pass	State
2026-03-12	NEW GENERATION GAS GATHERING LLC - GROVE HILL BOOSTER STATION	PLEASANT HILL, Sabine, LA	Pass	State
2026-03-10	CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX	DONALDSONVILLE, Ascension, LA	Pass	State
2026-03-04	PHILLIPS 66 CO - LAKE CHARLES REFINERY — high-priority violation on file	WESTLAKE, Calcasieu, LA	Pass	State
2026-03-03	W R GRACE & CO-CONN - LAKE CHARLES FACILITY	SULPHUR, Calcasieu, LA	Pass	State
2026-02-25	LA MIDSTREAM GAS SERVICES LLC - NORTH DESOTO CENTRAL FACILITY	FRIERSON, De Soto, LA	Pass	State
2026-02-25	VENTURE GLOBAL PLAQUEMINES LNG LLC - PLAQUEMINES LNG TERMINAL	PORT SULPHUR, Plaquemines, LA	Pass	State
2026-02-10	KINETICA PARTNERS LLC - SEPARATION & DEHYDRATION STATION 523	COCODRIE, Terrebonne, LA	Pass	State
2026-02-04	TAMPA PORT SERVICES LLC - FAUSTINA PLANT	ST. JAMES, St. James, LA	Pass	State
2026-02-04	STERICYCLE INC - STERICYCLE SPRINGHILL FACILITY	SAREPTA, Webster, LA	Pass	State
2026-02-03	TAMPA PORT SERVICES LLC - FAUSTINA PLANT	ST. JAMES, St. James, LA	Pass	State
2026-01-14	ADM GRAIN RIVER SYSTEM INC - DESTREHAN FACILITY	DESTREHAN, St. Charles, LA	Pass	State
2026-01-14	TOKAI CARBON CB LTD - ADDIS FACILITY — high-priority violation on file	ADDIS, West Baton Rouge, LA	Pass	State
2026-01-08	CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX	DONALDSONVILLE, Ascension, LA	Pass	State
2026-01-08	CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX	DONALDSONVILLE, Ascension, LA	Pass	State
2026-01-07	CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX	DONALDSONVILLE, Ascension, LA	Pass	State
2026-01-07	CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX	DONALDSONVILLE, Ascension, LA	Pass	State
2026-01-06	CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX	DONALDSONVILLE, Ascension, LA	Pass	State
2026-01-06	MAGNOLIA MIDSTREAM GAS SERVICES LLC - SPRING RIDGE NORTH CENTRAL FACILITY	SPRING RIDGE, Caddo, LA	Pass	State
2026-01-06	RAIN CII CARBON LLC - NORCO COKE CALCINING PLANT	NORCO, St. Charles, LA	Pass	State
2026-01-05	CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX	DONALDSONVILLE, Ascension, LA	Pass	State
2026-01-05	WARD FP 18-13-12 ALT PAD	MANSFIELD, De Soto, LA	Pass	State

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