EPA Air · stack tests by year
Air-emissions stack tests in 2023
- 26,911Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2023
- California 7,676
- Ohio 2,800
- Florida 1,589
- Indiana 1,487
- Oklahoma 1,420
- New Mexico 1,087
- Georgia 1,057
- Pennsylvania 889
- Alabama 689
- Wyoming 670
- Mississippi 625
- Arkansas 602
- Iowa 453
- Colorado 436
- Texas 395
- Missouri 328
- North Carolina 302
- Washington 283
- Wisconsin 251
- Michigan 229
- Minnesota 228
- Delaware 224
- South Carolina 222
- West Virginia 218
- Kentucky 210
- Tennessee 200
- Utah 196
- Montana 177
- Virginia 170
- North Dakota 157
- Illinois 152
- Nebraska 152
- Alaska 140
- Nevada 127
- New York 123
- Maine 111
- Connecticut 108
- Arizona 102
- Louisiana 77
- Idaho 77
- Hawaii 72
- New Hampshire 58
- New Jersey 56
- South Dakota 54
- Maryland 49
- Kansas 45
- Oregon 44
- District of Columbia 36
- Massachusetts 27
- Rhode Island 20
- Puerto Rico 6
- Vermont 5
Other years
Air-emissions stack tests recorded in 2023
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2023-12-05 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | KERSEY 7.1 MI. N OF, Weld, CO | Fail | State |
| 2023-12-05 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | KERSEY 7.1 MI. N OF, Weld, CO | Fail | State |
| 2023-12-05 | MANATEE COUNTY UTILITY OPERATIONS DEPT. | BRADENTON, Manatee, FL | Pass | State |
| 2023-12-05 | MANATEE COUNTY UTILITY OPERATIONS DEPT. | BRADENTON, Manatee, FL | Pass | State |
| 2023-12-05 | LX HAUSYS AMERICA, INC. — high-priority violation on file | ADAIRSVILLE, Gordon, GA | Pass | State |
| 2023-12-05 | LX HAUSYS AMERICA, INC. — high-priority violation on file | ADAIRSVILLE, Gordon, GA | N/A | State |
| 2023-12-05 | CLEARWATER PAPER CORPORATION - AUGUSTA MILL — high-priority violation on file | AUGUSTA, Richmond, GA | Pass | State |
| 2023-12-05 | IES - HONOLULU TRANSPORTATION | HONOLULU, Honolulu, HI | Pass | State |
| 2023-12-05 | POET BIOREFINING - LIBERTY (EMMETSBURG) — high-priority violation on file | EMMETSBURG, Palo Alto, IA | Pass | State |
| 2023-12-05 | TEMPLETON RYE SPIRITS, LLC — high-priority violation on file | TEMPLETON, Carroll, IA | Pass | State |
| 2023-12-05 | TEMPLETON RYE SPIRITS, LLC — high-priority violation on file | TEMPLETON, Carroll, IA | Pass | State |
| 2023-12-05 | BIOSPRINGER NORTH AMERICA CORPORATION | CEDAR RAPIDS, Linn, IA | Fail | Local |
| 2023-12-05 | WR GRACE | CHICAGO, Cook, IL | Fail | State |
| 2023-12-05 | WR GRACE | CHICAGO, Cook, IL | Pass | State |
| 2023-12-05 | WR GRACE | CHICAGO, Cook, IL | Pass | State |
| 2023-12-05 | MCFONA | GENEVA, Kane, IL | Pass | State |
| 2023-12-05 | NORTH SHORE GAS CO | LIBERTYVILLE, Lake, IL | Pass | State |
| 2023-12-05 | NORTH SHORE GAS CO | LIBERTYVILLE, Lake, IL | Pass | State |
| 2023-12-05 | NORTH SHORE GAS CO | LIBERTYVILLE, Lake, IL | Pass | State |
| 2023-12-05 | NORTH SHORE GAS CO | LIBERTYVILLE, Lake, IL | Pass | State |
| 2023-12-05 | NORTH SHORE GAS CO | LIBERTYVILLE, Lake, IL | Pass | State |
| 2023-12-05 | 3M HARTFORD CITY | HARTFORD CITY, Blackford, IN | Pass | State |
| 2023-12-05 | 3M HARTFORD CITY | HARTFORD CITY, Blackford, IN | Pass | State |
| 2023-12-05 | DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file | WARSAW, Kosciusko, IN | Pass | State |
| 2023-12-05 | DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file | WARSAW, Kosciusko, IN | Pass | State |
| 2023-12-05 | ANR PIPELINE COMPANY LAGRANGE COMPRESSOR STATION — high-priority violation on file | LAGRANGE, LaGrange, IN | Pass | State |
| 2023-12-05 | ANR PIPELINE COMPANY LAGRANGE COMPRESSOR STATION — high-priority violation on file | LAGRANGE, LaGrange, IN | Pass | State |
| 2023-12-05 | US STEEL CORPORATION GARY WORKS — high-priority violation on file | GARY, Lake, IN | Pass | State |
| 2023-12-05 | US STEEL CORPORATION GARY WORKS — high-priority violation on file | GARY, Lake, IN | Pass | State |
| 2023-12-05 | US STEEL CORPORATION GARY WORKS — high-priority violation on file | GARY, Lake, IN | Pass | State |
| 2023-12-05 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2023-12-05 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2023-12-05 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2023-12-05 | LOGAN ALUMINUM INC | RUSSELLVILLE, Logan, KY | Pass | State |
| 2023-12-05 | WESTLAKE VINYLS INC | CALVERT CITY, Marshall, KY | Pass | State |
| 2023-12-05 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2023-12-05 | THE DOW CHEMICAL COMPANY U.S.A., MIDLAND — high-priority violation on file | MIDLAND, Midland, MI | Pass | State |
| 2023-12-05 | DEARBORN INDUSTRIAL GENERATION | DEARBORN, Wayne, MI | Pending | State |
| 2023-12-05 | GREDE LLC - SAINT CLOUD | SAINT CLOUD, Benton, MN | Pass | State |
| 2023-12-05 | NORTHERN NATURAL GAS CO - FARIBAULT | FARIBAULT, Rice, MN | Pass | State |
| 2023-12-05 | HEARTLAND CORN PRODUCTS | WINTHROP, Sibley, MN | Pass | State |
| 2023-12-05 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2023-12-05 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2023-12-05 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2023-12-05 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2023-12-05 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2023-12-05 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2023-12-05 | NIEHS | RESEARCH TRIANGLE PARK, Durham, NC | Pass | State |
| 2023-12-05 | IREDELL TRANSMISSION, LLC | STATESVILLE, Iredell, NC | Pass | State |
| 2023-12-05 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2023-12-05 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2023-12-05 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2023-12-05 | CITY OF DICKINSON PUBLIC WORKS DEPARTMENT - CITY OF DICKINSON LANDFILL - AQ | DICKINSON, Stark, ND | Pass | State |
| 2023-12-05 | UNION PACIFIC RAILROAD — high-priority violation on file | NORTH PLATTE, Lincoln, NE | Pass | State |
| 2023-12-05 | FALLS CITY POWER PLANT — high-priority violation on file | FALLS CITY, Richardson, NE | Pass | State |
| 2023-12-05 | SARGENT CORPORATION | ROCHESTER, Strafford, NH | Pass | State |
| 2023-12-05 | MAVERICK COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-12-05 | HOLMES COMPRESSOR STATION | WASHINGTON, TOWNSHIP OF, Holmes, OH | Pass | State |
| 2023-12-05 | HOLMES COMPRESSOR STATION | WASHINGTON, TOWNSHIP OF, Holmes, OH | Pass | State |
| 2023-12-05 | ASCENT RESOURCES - UTICA LLC - SMITH CLR BL | BRIDGEPORT, Belmont, OH | Pass | State |
| 2023-12-05 | ASCENT RESOURCES - UTICA LLC - SMITH CLR BL | BRIDGEPORT, Belmont, OH | Pass | State |
| 2023-12-05 | ASCENT RESOURCES - UTICA LLC - SMITH CLR BL | BRIDGEPORT, Belmont, OH | Pass | State |
| 2023-12-05 | EQM OLYMPUS MIDSTREAM, LLC - CATAPULT CS | MARTINS FERRY, Belmont, OH | Pass | State |
| 2023-12-05 | EQM OLYMPUS MIDSTREAM, LLC - CATAPULT CS | MARTINS FERRY, Belmont, OH | Pass | State |
| 2023-12-05 | EQM OLYMPUS MIDSTREAM, LLC - CATAPULT CS | MARTINS FERRY, Belmont, OH | Pass | State |
| 2023-12-05 | ASCENT RESOURCES - UTICA LLC - HARR MTP JF | RAYLAND, Jefferson, OH | Pass | State |
| 2023-12-05 | ASCENT RESOURCES - UTICA LLC - HARR MTP JF | RAYLAND, Jefferson, OH | Pass | State |
| 2023-12-05 | ASCENT RESOURCES - UTICA LLC - HARR MTP JF | RAYLAND, Jefferson, OH | Pass | State |
| 2023-12-05 | DTE MARIETTA | MARIETTA, Washington, OH | Pass | State |
| 2023-12-05 | CLEVELAND-CLIFFS CLEVELAND WORKS LLC — high-priority violation on file | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2023-12-05 | ALTERRA ENERGY, LLC | AKRON, Summit, OH | Pass | State |
| 2023-12-05 | ALTERRA ENERGY, LLC | AKRON, Summit, OH | Fail | State |
| 2023-12-05 | ALTERRA ENERGY, LLC | AKRON, Summit, OH | Pass | State |
| 2023-12-05 | BCE MACH LLC / SCHOELING 5 26 12 1H AND MURROW 8 26 1 | CHEROKEE, Alfalfa, OK | Pass | State |
| 2023-12-05 | BCE MACH LLC / THORP 4 24 10 1H AND CYNDA LOU 9 24 10 | HELENA, Alfalfa, OK | Pass | State |
| 2023-12-05 | ET GATHERING PROCESSING LLC / DRY CREEK COMPRESSOR STATION | BURLINGTON, Alfalfa, OK | Pass | State |
| 2023-12-05 | ET GATHERING PROCESSING LLC / DRY CREEK COMPRESSOR STATION | BURLINGTON, Alfalfa, OK | Pass | State |
| 2023-12-05 | ET GATHERING PROCESSING LLC / DRY CREEK COMPRESSOR STATION | BURLINGTON, Alfalfa, OK | Pass | State |
| 2023-12-05 | ET GATHERING PROCESSING LLC / BEAR CREEK COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pass | State |
| 2023-12-05 | ET GATHERING PROCESSING LLC / BEAR CREEK COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pass | State |
| 2023-12-05 | BCE MACH III LLC / EHU 219H | HENNESSEY, Kingfisher, OK | Pass | State |
| 2023-12-05 | BCE MACH III LLC / LSEOU 92 3HO LSEOU 93 6HO LSEOU 93 8HO | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-12-05 | BCE MACH III LLC / WHISKEYFEET 1606 3 2MH PAD | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-12-05 | BCE MACH III LLC / LSEOU 18 1HO 19 4HO 24 4HO 25 4HO PAD | DOVER, Kingfisher, OK | Pass | State |
| 2023-12-05 | TULSA LFG LLC / AMERICAN ENVIRONMENTAL LANDFILL | SAND SPRINGS, Osage, OK | Pass | State |
| 2023-12-05 | TULSA LFG LLC / AMERICAN ENVIRONMENTAL LANDFILL | SAND SPRINGS, Osage, OK | Pass | State |
| 2023-12-05 | MARKWEST OKLAHOMA GAS CO LLC / KERNS CANAAN POD 5 COMPRESSOR STATION | MCALESTER, Pittsburg, OK | Pass | State |
| 2023-12-05 | ET GATHERING PROCESSING LLC / CHEYENNE COMPRESSOR STATION | CHEYENNE, Roger Mills, OK | Pass | State |
| 2023-12-05 | ET GATHERING PROCESSING LLC / ROLL COMPRESSOR STATION | CRAWFORD, Roger Mills, OK | Pass | State |
| 2023-12-05 | BCE MACH LLC / JOHN 13 28 13 STA | CAPRON, Woods, OK | Pass | State |
| 2023-12-05 | KINGSFORD MANUFACTURING CO. | SPRINGFIELD, Lane, OR | Pass | Local |
| 2023-12-05 | GUTHRIE ROBERT PACKER/SAYRE | SAYRE, Bradford, PA | Fail | State |
| 2023-12-05 | EASTERN GAS TRANS & STORAGE INC/CENTRE COMP STA | PLEASANT GAP, Centre, PA | Pass | State |
| 2023-12-05 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/GODWIN COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2023-12-05 | ETC NORTHEAST FLD SVC LLC/PIKE COMP STA | ROCHESTER, Beaver, PA | Pass | State |
| 2023-12-05 | NFG MIDSTREAM TROUT RUN LLC/TROUT RUN MTN COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2023-12-05 | NFG MIDSTREAM COVINGTON LLC/KINNAN 845 WELL PAD | MIDDLEBURY, Tioga, PA | Pass | State |
| 2023-12-05 | EXPAND OPERATING LLC/RU-75 SGL-A WELLPAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2023-12-05 | DOMTAR PAPER COMPANY LLC | BENNETTSVILLE, Marlboro, SC | Pass | State |
| 2023-12-05 | RICHLAND COUNTY LANDFILL INC — high-priority violation on file | ELGIN, Kershaw, SC | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.