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 |
|---|---|---|---|---|
| 2023-09-26 | CONTINENTAL REFINING COMPANY LLC | SOMERSET, Pulaski, KY | Pass | State |
| 2023-09-26 | TOYOTA MOTOR MANUFACTURING, KENTUCKY | GEORGETOWN (SCOTT), Scott, KY | Pass | State |
| 2023-09-26 | LINAMAR MONTAGUE | MONTAGUE, Muskegon, MI | Pass | State |
| 2023-09-26 | FCA US LLC STERLING HEIGHTS ASSEMBLY PLANT | STERLING HEIGHTS, Macomb, MI | Pending | State |
| 2023-09-26 | DTE GAS COMPANY - KALKASKA COMPRESSOR STATION | KALKASKA, Kalkaska, MI | Pass | State |
| 2023-09-26 | MACLEAN POWER SYSTEMS MANKATO LLC | MANKATO, Blue Earth, MN | Fail | State |
| 2023-09-26 | US STEEL CORP - MINNTAC | MOUNTAIN IRON, St. Louis, MN | Pass | State |
| 2023-09-26 | ANDERSEN CORPORATION | BAYPORT, Washington, MN | Pass | State |
| 2023-09-26 | MASONITE CORPORATION — high-priority violation on file | LAUREL, Jones, MS | Pass | State |
| 2023-09-26 | MASONITE CORPORATION — high-priority violation on file | LAUREL, Jones, MS | Pass | State |
| 2023-09-26 | MASONITE CORPORATION — high-priority violation on file | LAUREL, Jones, MS | Pass | State |
| 2023-09-26 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, MOSELLE GENERATING PLANT | MOSELLE, Jones, MS | Pass | State |
| 2023-09-26 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, MOSELLE GENERATING PLANT | MOSELLE, Jones, MS | Pass | State |
| 2023-09-26 | COOPERATIVE ENERGY, A MISSISSIPPI ELECTRIC COOPERATIVE, MOSELLE GENERATING PLANT | MOSELLE, Jones, MS | Pass | State |
| 2023-09-26 | APAC MISSISSIPPI INC, VICKSBURG RIFLE RANGE ROAD | VICKSBURG, Warren, MS | Pass | State |
| 2023-09-26 | APAC MISSISSIPPI INC, VICKSBURG RIFLE RANGE ROAD | VICKSBURG, Warren, MS | Pass | State |
| 2023-09-26 | CANFOR SOUTHERN PINE - GRAHAM PLANT — high-priority violation on file | GRAHAM, Alamance, NC | Pass | State |
| 2023-09-26 | NCEMC - BUXTON | BUXTON, Dare, NC | Pass | State |
| 2023-09-26 | ONEOK ROCKIES MIDSTREAM, L.L.C. - ALEXANDER COMPRESSOR STATION | ALEXANDER, McKenzie, ND | Pass | State |
| 2023-09-26 | ONEOK ROCKIES MIDSTREAM, L.L.C. - BEAVERTAIL COMPRESSOR STATION - AQ | WATFORD CITY, McKenzie, ND | Pass | State |
| 2023-09-26 | LINCOLN INDUSTRIES | LINCOLN, Lancaster, NE | Pending | Local |
| 2023-09-26 | OSSIPEE AGGREGATES CORPORATION | OSSIPEE, Carroll, NH | Pass | State |
| 2023-09-26 | FOSTER MATERIALS, INC. | HENNIKER, Merrimack, NH | Pass | State |
| 2023-09-26 | NE RENEWABLE POWER SPRINGFIELD | SPRINGFIELD, Sullivan, NH | Pass | State |
| 2023-09-26 | NE RENEWABLE POWER SPRINGFIELD | SPRINGFIELD, Sullivan, NH | Pass | State |
| 2023-09-26 | OXY - CEDAR CANYON EAST COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-26 | OXY - CEDAR CANYON EAST COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-26 | OXY - CEDAR CANYON EAST COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-26 | OXY - CEDAR CANYON EAST COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-26 | PIRATE STATE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-09-26 | PIRATE STATE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-09-26 | CENTRAL OHIO ASPHALT | CHESTERVILLE, Morrow, OH | Pass | State |
| 2023-09-26 | EOG RESOURCES, INC. - ADDY 9-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-09-26 | EOG RESOURCES, INC. - ADDY 9-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-09-26 | CUYAHOGA ASPHALT MATERIALS - SHALERSVILLE | MANTUA, Portage, OH | Pass | State |
| 2023-09-26 | CARDINAL FG CO / CARDINAL GLASS PLANT | DURANT, Bryan, OK | Pass | State |
| 2023-09-26 | VALIDUS ENERGY II MIDCON LLC / RIVIERA 1405 PAD | PIEDMONT, Canadian, OK | Pass | State |
| 2023-09-26 | FW MIDCON I LLC / REDHEAD 1407 2H 3H 4H 9XX | OKARCHE, Canadian, OK | Pass | State |
| 2023-09-26 | CONTINENTAL RESOURCES / COURBET 2 21 27XHW COURBET 11 21 27XHM | RATLIFF CITY, Carter, OK | Pass | State |
| 2023-09-26 | CONTINENTAL RESOURCES / COURBET 7 22 9XHW 14 22 9XHM | RATLIFF CITY, Carter, OK | Pass | State |
| 2023-09-26 | ET GATHERING PROCESSING LLC / BARNITZ COMPRESSOR STATION | BUTLER, Custer, OK | Pass | State |
| 2023-09-26 | VALIDUS ENERGY II MIDCON LLC / RABBIT ROAD 9 10 PAD | TUTTLE, Grady, OK | Pass | State |
| 2023-09-26 | BCE MACH III LLC / HORN 3 5H LNU 94 3HO LNU 94 4HO PAD | DOVER, Kingfisher, OK | Pass | State |
| 2023-09-26 | FW MIDCON I LLC / CONNIE FIU 1608 2H 15X CONNIE FED 1608 | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-09-26 | PONDEROSA GATHERING LLC / PONDEROSA COMPRESSOR STATION 2 | QUINTON, Pittsburg, OK | Pass | State |
| 2023-09-26 | PONDEROSA GATHERING LLC / PONDEROSA COMPRESSOR STATION 2 | QUINTON, Pittsburg, OK | Pass | State |
| 2023-09-26 | TENNESSEE GAS PIPELINE CO/315 WELLSBORO | WELLSBORO, Tioga, PA | Pass | State |
| 2023-09-26 | EASTERN GAS TRANS & STORAGE INC/FINNEFROCK STA | RENOVO, Clinton, PA | Pass | State |
| 2023-09-26 | ELLWOOD QUALITY STEELS CO/NEW CASTLE PLT | NEW CASTLE, Lawrence, PA | Pass | State |
| 2023-09-26 | EQT ARO LLC/LARRYS CREEK COMP STA | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2023-09-26 | JKLM ENERGY LLC/HEADWATERS 145 WELL PAD | ULYSSES, Potter, PA | Pass | State |
| 2023-09-26 | BEAUFORT JASPER WATER & SEWER AUTHORITY - CHELSEA WWTP — high-priority violation on file | OKATIE, Beaufort, SC | Pass | State |
| 2023-09-26 | SANTEE COOPER CROSS GENERATING STATION — high-priority violation on file | PINEVILLE, Berkeley, SC | Pass | State |
| 2023-09-26 | SYLVAMO NORTH AMERICA LLC - EASTOVER MILL | EASTOVER, Richland, SC | Fail | State |
| 2023-09-26 | SYLVAMO NORTH AMERICA LLC - EASTOVER MILL | EASTOVER, Richland, SC | Pass | State |
| 2023-09-26 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2023-09-26 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2023-09-26 | INTERMOUNTAIN POWER SERVICE CORPORATION | DELTA, Millard, UT | Pass | State |
| 2023-09-26 | INTERMOUNTAIN POWER SERVICE CORPORATION | DELTA, Millard, UT | Pass | State |
| 2023-09-26 | EASTERN GAS TRANSMISSION AND STORAGE, INC., SCHUTTE STATION | SEDALIA, Doddridge, WV | Pass | State |
| 2023-09-26 | DTM APPALACHIA GATHERING, LLC, DAYBROOK STATION | FAIRVIEW, Marion, WV | Pass | State |
| 2023-09-26 | MONONGAHELA POWER COMPANY, FORT MARTIN STATION | MAIDSVILLE, Monongalia, WV | Pass | State |
| 2023-09-26 | MONONGAHELA POWER COMPANY, FORT MARTIN STATION | MAIDSVILLE, Monongalia, WV | Pass | State |
| 2023-09-26 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | GILLETTE, Campbell, WY | Pass | State |
| 2023-09-26 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | GILLETTE, Campbell, WY | Pass | State |
| 2023-09-26 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | GILLETTE, Campbell, WY | Pass | State |
| 2023-09-26 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | GILLETTE, Campbell, WY | Pass | State |
| 2023-09-25 | DESOTO GATHERING COMPANY, LLC - YELLOWSTONE CPF 1 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2023-09-25 | DESOTO GATHERING COMPANY, LLC - STEELHEAD CPF-3 | CLINTON, Van Buren, AR | Pass | State |
| 2023-09-25 | MCGEORGE CONSTRUCTION CO., INC. - CRANFORD PORTABLE PLANT | NORTH LITTLE ROCK, Pulaski, AR | Pass | State |
| 2023-09-25 | DELTA ASPHALT OF ARKANSAS, INC. | LUXORA, Mississippi, AR | Pass | State |
| 2023-09-25 | ULTRAMAR INC | WILMINGTON, Los Angeles, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.