EPA Air · stack tests by year

Air-emissions stack tests in 2026

11,110Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit.

States, 2026

Other years

Air-emissions stack tests recorded in 2026

Date	Facility	Where	Kind	Agency
2026-02-13	ALUMINUM DYNAMICS, LLC	COLUMBUS, Lowndes, MS	Pass	State
2026-02-13	ALUMINUM DYNAMICS, LLC	COLUMBUS, Lowndes, MS	Pass	State
2026-02-13	ALUMINUM DYNAMICS, LLC	COLUMBUS, Lowndes, MS	Pass	State
2026-02-13	DUKE ENERGY CORPORATION LCTS	STANLEY, Lincoln, NC	Pass	State
2026-02-13	CLARIOS	KERNERSVILLE, Forsyth, NC	Pass	Local
2026-02-13	CLARIOS	KERNERSVILLE, Forsyth, NC	Pass	Local
2026-02-13	HF SINCLAIR NAVAJO REFINING LLC (ARTESIA) — high-priority violation on file	ARTESIA, Eddy, NM	Pass	State
2026-02-13	BLOSSOM COMPRESSOR STATION	CARLSBAD, Eddy, NM	Pass	State
2026-02-13	EAGLE COMPRESSOR STATION	MALAGA, Eddy, NM	Pass	State
2026-02-13	LONGWOOD - STEBBINS COMPRESSOR STATION	CARLSBAD, Eddy, NM	Pass	State
2026-02-13	DAGGER LAKE NORTH TB	EUNICE, Lea, NM	Pass	State
2026-02-13	SNEAKY SNAKE 24 CTB 1	MALAGA, Lea, NM	Pass	State
2026-02-13	EXPAND OPERATING LLC/LU-06 FLICKS RUN EAST WELL PAD	TROUT RUN, Lycoming, PA	Pass	State
2026-02-13	GEORGIA-PACIFIC WOOD PRODUCTS LLC - CLARENDON OSB	ALCOLU, Clarendon, SC	Pass	State
2026-02-13	VALERO REFINING COMPANY-TN LLC	MEMPHIS, Shelby, TN	Pass	Local
2026-02-13	WESTROCK LONGVIEW LLC — high-priority violation on file	LONGVIEW, Cowlitz, WA	Pass	State
2026-02-12	HONDA MANUFACTURING OF ALABAMA LLC	LINCOLN, Talladega, AL	Pass	State
2026-02-12	GREEN BAY PACKAGING, INC. - ARKANSAS KRAFT DIVISION	MORRILTON, Conway, AR	Pass	State
2026-02-12	DESOTO GATHERING COMPANY, LLC - S. RAINBOW CPF-2	CLINTON, Conway, AR	Pass	State
2026-02-12	TESORO REFINING & MARKETING CO, LLC — high-priority violation on file	CARSON, Los Angeles, CA	Pass	Local
2026-02-12	KERN OIL & REFINING — high-priority violation on file	BAKERSFIELD, Kern, CA	Pass	Local
2026-02-12	KERN OIL & REFINING — high-priority violation on file	BAKERSFIELD, Kern, CA	Pass	Local
2026-02-12	KERN OIL & REFINING — high-priority violation on file	BAKERSFIELD, Kern, CA	Pass	Local
2026-02-12	KERN OIL & REFINING — high-priority violation on file	BAKERSFIELD, Kern, CA	Pass	Local
2026-02-12	KERN OIL & REFINING — high-priority violation on file	BAKERSFIELD, Kern, CA	Pass	Local
2026-02-12	KERN OIL & REFINING — high-priority violation on file	BAKERSFIELD, Kern, CA	Pass	Local
2026-02-12	COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Fail	State
2026-02-12	MONTEZUMA COUNTY LANDFILL	CORTEZ 2.3 MI. S OF, Montezuma, CO	Pass	State
2026-02-12	MOSAIC FERTILIZER, LLC — high-priority violation on file	BARTOW, Polk, FL	Pass	State
2026-02-12	MOSAIC FERTILIZER, LLC — high-priority violation on file	BARTOW, Polk, FL	Pass	State
2026-02-12	GRAPHIC PACKAGING INTERNATIONAL, LLC - MACON MILL	MACON, Bibb, GA	Pass	State
2026-02-12	ROBINS AIR FORCE BASE	WARNER ROBINS, Houston, GA	Pass	State
2026-02-12	ROBINS AIR FORCE BASE	WARNER ROBINS, Houston, GA	Pass	State
2026-02-12	ROBINS AIR FORCE BASE	WARNER ROBINS, Houston, GA	Pass	State
2026-02-12	PELLA CORP-CARROLL DIV	CARROLL, Carroll, IA	Pass	State
2026-02-12	NATURAL GAS PIPELINE CO OF AMERICA-#204	COLUMBUS JUNCTION, Louisa, IA	Pass	State
2026-02-12	ROLLS ROYCE CORPORATION	INDIANAPOLIS, Marion, IN	Pass	State
2026-02-12	ROLLS ROYCE CORPORATION	INDIANAPOLIS, Marion, IN	Pass	State
2026-02-12	INDIANA UNIVERSITY	BLOOMINGTON, Monroe, IN	Pass	State
2026-02-12	INDIANA UNIVERSITY	BLOOMINGTON, Monroe, IN	Pass	State
2026-02-12	INDIANA UNIVERSITY	BLOOMINGTON, Monroe, IN	Pass	State
2026-02-12	INDIANA UNIVERSITY	BLOOMINGTON, Monroe, IN	Pass	State
2026-02-12	INDIANA UNIVERSITY	BLOOMINGTON, Monroe, IN	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Fail	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-02-12	DOMINION ENERGY COVE POINT LNG, LP	LUSBY, Calvert, MD	Pass	State
2026-02-12	GERDAU MACSTEEL MONROE MILL — high-priority violation on file	MONROE, Monroe, MI	Pass	State
2026-02-12	HASTINGS LANDFILL	HASTINGS, Barry, MI	Pass	State
2026-02-12	MARYSVILLE ETHANOL, LLC	MARYSVILLE, St. Clair, MI	Pass	State
2026-02-12	CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY	PASCAGOULA, Jackson, MS	Pass	State
2026-02-12	LEAF RIVER CELLULOSE LLC — high-priority violation on file	NEW AUGUSTA, Perry, MS	Pass	State
2026-02-12	LEAF RIVER CELLULOSE LLC — high-priority violation on file	NEW AUGUSTA, Perry, MS	Pass	State
2026-02-12	LEAF RIVER CELLULOSE LLC — high-priority violation on file	NEW AUGUSTA, Perry, MS	Pass	State
2026-02-12	LEAF RIVER CELLULOSE LLC — high-priority violation on file	NEW AUGUSTA, Perry, MS	Pass	State
2026-02-12	LEAF RIVER CELLULOSE LLC — high-priority violation on file	NEW AUGUSTA, Perry, MS	Pass	State
2026-02-12	GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file	WAYNESBORO, Wayne, MS	Pass	State
2026-02-12	GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file	WAYNESBORO, Wayne, MS	Pass	State
2026-02-12	GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file	WAYNESBORO, Wayne, MS	Pass	State
2026-02-12	GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file	WAYNESBORO, Wayne, MS	Pass	State
2026-02-12	GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file	WAYNESBORO, Wayne, MS	Pass	State
2026-02-12	GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file	WAYNESBORO, Wayne, MS	Pass	State
2026-02-12	CLARIOS	KERNERSVILLE, Forsyth, NC	Pass	Local
2026-02-12	CLARIOS	KERNERSVILLE, Forsyth, NC	Pass	Local
2026-02-12	CLARIOS	KERNERSVILLE, Forsyth, NC	Pass	Local
2026-02-12	HF SINCLAIR NAVAJO REFINING LLC (ARTESIA) — high-priority violation on file	ARTESIA, Eddy, NM	Pass	State
2026-02-12	HF SINCLAIR NAVAJO REFINING LLC (ARTESIA) — high-priority violation on file	ARTESIA, Eddy, NM	Pass	State
2026-02-12	EAGLE COMPRESSOR STATION	MALAGA, Eddy, NM	Pass	State
2026-02-12	EAGLE COMPRESSOR STATION	MALAGA, Eddy, NM	Pass	State
2026-02-12	BLUE QUAIL COMPRESSOR STATION	LOCO HILLS, Eddy, NM	Pass	State
2026-02-12	JAL NO3 GAS PLANT	JAL, Lea, NM	Pass	State
2026-02-12	JAL NO3 GAS PLANT	JAL, Lea, NM	Pass	State
2026-02-12	AZTEC COMPRESSOR STATION — high-priority violation on file	MONUMENT, Lea, NM	Pass	State
2026-02-12	AZTEC COMPRESSOR STATION — high-priority violation on file	MONUMENT, Lea, NM	Pass	State
2026-02-12	RED TANK 26 BOO STATION	MONUMENT, Lea, NM	Pass	State
2026-02-12	RED TANK 26 BOO STATION	MONUMENT, Lea, NM	Pass	State
2026-02-12	EOG - POSEIDON LOCAL GAS LIFT	MALAGA, Lea, NM	Pass	State
2026-02-12	EOG - POSEIDON LOCAL GAS LIFT	MALAGA, Lea, NM	Pass	State
2026-02-12	EOG - POSEIDON LOCAL GAS LIFT	MALAGA, Lea, NM	Pass	State
2026-02-12	FINCH PAPER LLC	GLENS FALLS, Warren, NY	Pass	State
2026-02-12	EOG RESOURCES, INC. - SMELTZ 23-13-5 PAD	CARROLLTON, Carroll, OH	Pass	State
2026-02-12	EOG RESOURCES, INC. - SMELTZ 23-13-5 PAD	CARROLLTON, Carroll, OH	Pass	State
2026-02-12	EOG RESOURCES, INC. - SMELTZ 23-13-5 PAD	CARROLLTON, Carroll, OH	Pass	State
2026-02-12	BASF CORPORATION	ELYRIA, Lorain, OH	Pass	State
2026-02-12	BASF CORPORATION	ELYRIA, Lorain, OH	Pass	State
2026-02-12	MIAMI UNIVERSITY	OXFORD, Butler, OH	Pass	State
2026-02-12	MIAMI UNIVERSITY	OXFORD, Butler, OH	Pass	State
2026-02-12	TOWER HEALTH SYS/READING HOSP	READING, Berks, PA	Pass	State
2026-02-12	MARKWEST LIBERTY MIDSTREAM & RESOURCES/NANCY STEWART	MOUNT PLEASANT, Washington, PA	Pass	State
2026-02-12	REPSOL OIL & GAS USA LLC/WATKINS HILL RD	COLUMBIA CROSS ROADS, Bradford, PA	Pass	State
2026-02-12	GREYLOCK MIDSTREAM LLC/VERES COMP STA	WAYNESBURG, Greene, PA	Pass	State
2026-02-12	BOLLES SOUTH WELLPAD — high-priority violation on file	NEW MILFORD, Susquehanna, PA	Pass	State
2026-02-12	NAVAL SURFACE WARFARE CENTER - PHILADELPHIA DIVISION	PHILADELPHIA, Philadelphia, PA	Pass	Local
2026-02-12	MPLX TERMINALS LLC - BELTON TERMINAL	BELTON, Anderson, SC	Pass	State
2026-02-12	HIGH PLAINS PROCESSING, LLC, A DELAWARE LIMITED LIABILITY	MITCHELL, Davison, SD	Pass	State
2026-02-12	VALERO REFINING COMPANY-TN LLC	MEMPHIS, Shelby, TN	Pass	Local
2026-02-12	VALERO REFINING COMPANY-TN LLC	MEMPHIS, Shelby, TN	Pass	Local

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