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 |
|---|---|---|---|---|
| 2023-10-23 | NORTHERN NATURAL GAS - FARMINGTON | FARMINGTON, Dakota, MN | Pass | State |
| 2023-10-23 | JBS WORTHINGTON MN | WORTHINGTON, Nobles, MN | Pass | State |
| 2023-10-23 | AG PARTNERS COOPERATIVE, INC. | TARKIO, Atchison, MO | Fail | State |
| 2023-10-23 | GENERAL MOTORS LLC | WENTZVILLE, St. Charles, MO | N/A | State |
| 2023-10-23 | GENERAL MOTORS LLC | WENTZVILLE, St. Charles, MO | N/A | State |
| 2023-10-23 | GENERAL MOTORS LLC | WENTZVILLE, St. Charles, MO | N/A | State |
| 2023-10-23 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-10-23 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-10-23 | AUBURN GENERATING PLANT | AUBURN, Nemaha, NE | N/A | State |
| 2023-10-23 | PAPAS FRITAS 27 CTB 2 | MALAGA, Eddy, NM | Pass | State |
| 2023-10-23 | DEVON- PAPAS FRITAS 27 CTB 1 | MALAGA, Eddy, NM | Pass | State |
| 2023-10-23 | GHOST COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-10-23 | GHOST COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-10-23 | SMALL'S SAND AND GRAVEL | GAMBIER, Knox, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2023-10-23 | EOG RESOURCES, INC. - ADDY 9-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-10-23 | EOG RESOURCES, INC. - ADDY 9-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-10-23 | EOG RESOURCES, INC. - ADDY 9-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-10-23 | EOG RESOURCES, INC. - APPLEGATH BOOSTER STATION | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2023-10-23 | EOG RESOURCES, INC. - APPLEGATH BOOSTER STATION | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2023-10-23 | EOG RESOURCES, INC. - APPLEGATH BOOSTER STATION | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2023-10-23 | IRON HORSE MIDSTREAM LLC / CRUSADER COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2023-10-23 | IRON HORSE MIDSTREAM LLC / CRUSADER COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2023-10-23 | IRON HORSE MIDSTREAM LLC / CRUSADER COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2023-10-23 | IRON HORSE MIDSTREAM LLC / CRUSADER COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2023-10-23 | IRON HORSE MIDSTREAM LLC / CRUSADER COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2023-10-23 | ET GATHERING PROCESSING LLC / GEARY COMPRESSOR STATION | GEARY, Canadian, OK | Pass | State |
| 2023-10-23 | BCE MACH III LLC / HUMPHREY 2 5H LNU 92 2HO LSEOU 10 2HO | DOVER, Kingfisher, OK | Pass | State |
| 2023-10-23 | BCE MACH III LLC / LSEOU 37 3HO LSEOU 37 4HO LSEOU 50 4HO | CRESCENT, Kingfisher, OK | Pass | State |
| 2023-10-23 | TARGA PIPELINE MIDCONTINENT LLC / KETCHUM RANCH COMPRESSOR STATION | VELMA, Stephens, OK | Pass | State |
| 2023-10-23 | PA GRAIN PROCESSING LLC/CLEARFIELD BORO ETHANOL PROD PLT — high-priority violation on file | CLEARFIELD, Clearfield, PA | Pass | State |
| 2023-10-23 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-23 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-23 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-23 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-23 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-23 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-23 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-23 | BEAUMONT GAS TO GASOLINE PLANT — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-23 | WI PUBLIC SERVICE WESTON POWER PLANT | KRONENWETTER, Marathon, WI | Pass | State |
| 2023-10-23 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2023-10-23 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2023-10-22 | KING ASPHALT, INC. - WILMINGTON ASPHALT PLANT | CASTLE HAYNE, New Hanover, NC | Pass | State |
| 2023-10-22 | MONONGAHELA POWER COMPANY, HARRISON STATION | HAYWOOD, Harrison, WV | Pass | State |
| 2023-10-21 | WAUPACA FOUNDRY INC PLANT 5 — high-priority violation on file | TELL CITY, Perry, IN | Pass | State |
| 2023-10-21 | WPL-SOUTH FOND DU LAC COMBUSTION TURBINE SITE | FOND DU LAC, Fond du Lac, WI | Pass | State |
| 2023-10-21 | WPL - EDGEWATER GENERATING STATION | SHEBOYGAN, Taylor, WI | Pass | State |
| 2023-10-20 | VANTIVE US HEALTHCARE, LLC. | MOUNTAIN HOME, Baxter, AR | Pass | State |
| 2023-10-20 | HIGH DESERT POWER PROJECT, LLC | VICTORVILLE, San Bernardino, CA | Pass | Local |
| 2023-10-20 | HIGH DESERT POWER PROJECT, LLC | VICTORVILLE, San Bernardino, CA | Pass | Local |
| 2023-10-20 | HIGH DESERT POWER PROJECT, LLC | VICTORVILLE, San Bernardino, CA | Pass | Local |
| 2023-10-20 | AMRIZE PORTLAND PLANT — high-priority violation on file | FLORENCE 3.8 MI. E OF, Fremont, CO | Pass | State |
| 2023-10-20 | BONANZA - LATHAM 11-13 PROD FACILITY | KERSEY 8.5 MI. N OF, Weld, CO | Pass | State |
| 2023-10-20 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2023-10-20 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2023-10-20 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2023-10-20 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2023-10-20 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2023-10-20 | WOLF CREEK LANDFILL | DRY BRANCH, Twiggs, GA | Pass | State |
| 2023-10-20 | ABSOLUTE ENERGY LLC-SAINT ANSGAR (MONA) | SAINT ANSGAR, Mitchell, IA | Pass | State |
| 2023-10-20 | LINWOOD MINING & MINERALS CORP | DAVENPORT, Scott, IA | Fail | State |
| 2023-10-20 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2023-10-20 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2023-10-20 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2023-10-20 | FEDERAL EXPRESS CORPORATION | INDIANAPOLIS, Marion, IN | Pass | State |
| 2023-10-20 | FEDERAL EXPRESS CORPORATION | INDIANAPOLIS, Marion, IN | Pass | State |
| 2023-10-20 | FEDERAL EXPRESS CORPORATION | INDIANAPOLIS, Marion, IN | Pass | State |
| 2023-10-20 | FEDERAL EXPRESS CORPORATION | INDIANAPOLIS, Marion, IN | Pass | State |
| 2023-10-20 | FEDERAL EXPRESS CORPORATION | INDIANAPOLIS, Marion, IN | Pass | State |
| 2023-10-20 | FEDERAL EXPRESS CORPORATION | INDIANAPOLIS, Marion, IN | Pass | State |
| 2023-10-20 | FEDERAL EXPRESS CORPORATION | INDIANAPOLIS, Marion, IN | Pass | State |
| 2023-10-20 | FEDERAL EXPRESS CORPORATION | INDIANAPOLIS, Marion, IN | Pass | State |
| 2023-10-20 | CONSTELLATION WEST MEDWAY LLC | MEDWAY, Norfolk, MA | Pass | State |
| 2023-10-20 | PIKE INDUSTRIES, INC. | NEWRY, Oxford, ME | Pass | State |
| 2023-10-20 | NORTH PEN COMPRESSOR STATION | ARTESIA, Eddy, NM | Pass | State |
| 2023-10-20 | UNIVERSITY OF NEW MEXICO-MAIN CAMPUS | ALBUQUERQUE, Bernalillo, NM | Pass | Local |
| 2023-10-20 | DCP OPERATING CO LP / CANTON BOOSTER | CANTON, Blaine, OK | Pass | State |
| 2023-10-20 | HARRISON GYPSUM LLC DBA ARCOSA SPECIALT / MOORELAND | MOORELAND, Woodward, OK | Pass | State |
| 2023-10-20 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2023-10-20 | WHEELABRATOR PORTSMOUTH INC - RDF FACILITY | PORTSMOUTH, Portsmouth (city), VA | Pass | State |
| 2023-10-20 | OMNIS PLEASANTS, LLC, PLEASANTS POWER STATION | WILLOW ISLAND, Pleasants, WV | Pass | State |
| 2023-10-19 | JOHNSON COMPRESSOR STATION | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2023-10-19 | EOG- CLARKS CREEK CENTRAL FACILITY | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2023-10-19 | EOG- CLARKS CREEK CENTRAL FACILITY | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2023-10-19 | EOG- CLARKS CREEK CENTRAL FACILITY | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2023-10-19 | EOG- CLARKS CREEK CENTRAL FACILITY | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2023-10-19 | EOG- CLARKS CREEK CENTRAL FACILITY | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2023-10-19 | EOG- CLARKS CREEK CENTRAL FACILITY | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2023-10-19 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | BUTLER, Choctaw, AL | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.