EPA Air · stack tests by year
Air-emissions stack tests in 2024
- 39,252Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2024
- California 18,905
- Ohio 2,721
- Oklahoma 1,804
- Indiana 1,704
- New Mexico 1,428
- Florida 1,427
- Wyoming 1,285
- Georgia 1,104
- Pennsylvania 905
- Alabama 721
- Arkansas 569
- Missouri 539
- Iowa 464
- Mississippi 437
- Colorado 400
- Washington 338
- Texas 271
- Wisconsin 269
- North Carolina 254
- Minnesota 250
- West Virginia 230
- South Carolina 223
- Kentucky 218
- Delaware 185
- Montana 180
- Michigan 159
- Virginia 159
- Alaska 158
- Utah 157
- Tennessee 155
- Nebraska 150
- North Dakota 138
- Arizona 126
- Connecticut 122
- New York 115
- Maine 114
- Louisiana 113
- Illinois 109
- Idaho 91
- Nevada 88
- Hawaii 67
- Kansas 64
- New Hampshire 61
- South Dakota 59
- Maryland 58
- Massachusetts 52
- Oregon 35
- Rhode Island 29
- District of Columbia 25
- New Jersey 8
- Puerto Rico 5
- Vermont 4
Other years
Air-emissions stack tests recorded in 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-10-01 | CARGILL, INC. - DAYTON | DAYTON, Montgomery, OH | Pass | State |
| 2024-10-01 | CARGILL, INC. - DAYTON | DAYTON, Montgomery, OH | Pass | State |
| 2024-10-01 | CARGILL, INC. - DAYTON | DAYTON, Montgomery, OH | Pass | State |
| 2024-10-01 | CARGILL, INC. - DAYTON | DAYTON, Montgomery, OH | Pass | State |
| 2024-10-01 | CARGILL, INC. - DAYTON | DAYTON, Montgomery, OH | Pass | State |
| 2024-10-01 | CARGILL, INC. - DAYTON | DAYTON, Montgomery, OH | Pass | State |
| 2024-10-01 | CARGILL, INC. - DAYTON | DAYTON, Montgomery, OH | Pass | State |
| 2024-10-01 | CARGILL, INC. - DAYTON | DAYTON, Montgomery, OH | Pass | State |
| 2024-10-01 | CARGILL, INC. - DAYTON | DAYTON, Montgomery, OH | Pass | State |
| 2024-10-01 | DCP OPERATING CO LP / CRUSADER COMPRESSOR STATION | ARNETT, Ellis, OK | Pass | State |
| 2024-10-01 | TOM STACK LLC / REPUBLIC STATION | TUTTLE, Grady, OK | Pass | State |
| 2024-10-01 | MARKWEST OKLAHOMA GAS CO LLC / ALPHA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2024-10-01 | ET GATHERING PROCESSING LLC / HOOK ECHO COMPRESSOR FACILITY | BRADLEY, McClain, OK | Pass | State |
| 2024-10-01 | ET GATHERING PROCESSING LLC / ROBBERSON COMPRESSOR STATION | BRAY, Stephens, OK | Pass | State |
| 2024-10-01 | ONEOK FIELD SERVICES CO LLC / COTTONWOOD COMPRESSOR STATION | VELMA, Stephens, OK | Pass | State |
| 2024-10-01 | ONEOK FIELD SERVICES CO LLC / COTTONWOOD COMPRESSOR STATION | VELMA, Stephens, OK | Pass | State |
| 2024-10-01 | ELLWOOD QUALITY STEELS CO/NEW CASTLE PLT | NEW CASTLE, Lawrence, PA | Pass | State |
| 2024-10-01 | YORK GROUP INC/BLACK BRIDGE RD | YORK, York, PA | Pass | State |
| 2024-10-01 | NFG MIDSTREAM COVINGTON LLC/KRAUSE COMP STA | MAINESBURG, Tioga, PA | Fail | State |
| 2024-10-01 | MARKWEST LIBERTY BLUESTONE LLC/SARSEN GAS PROC PLT | EVANS CITY, Butler, PA | Pass | State |
| 2024-10-01 | HERMITAGE MUNI AUTH/HERMITAGE WPCP | HERMITAGE, Mercer, PA | Pass | State |
| 2024-10-01 | CABOT OIL & GAS CORP/BISHOP, B PAD 1 | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2024-10-01 | RESONAC GRAPHITE AMERICA INC — high-priority violation on file | RIDGEVILLE, Dorchester, SC | Pass | State |
| 2024-10-01 | DAKOTA KITCHEN AND BATH INC | SIOUX FALLS, Minnehaha, SD | Pass | State |
| 2024-10-01 | GCC DACOTAH — high-priority violation on file | RAPID CITY, Pennington, SD | Pass | State |
| 2024-10-01 | ANR PIPELINE COMPANY | COTTAGE GROVE, Henry, TN | Pass | State |
| 2024-10-01 | DUPONT SPECIALTY PRODUCTS USA LLC - SPRUANCE PLANT | NORTH CHESTERFIELD, Chesterfield, VA | Fail | State |
| 2024-10-01 | CARDINAL FG COMPANY | MENOMONIE, Dunn, WI | Pass | State |
| 2024-10-01 | AMCOR WISCONSIN, LLC - NEW LONDON | NEW LONDON, Ozaukee, WI | Pass | State |
| 2024-10-01 | PLYMOUTH FOAM INCORPORATED — high-priority violation on file | PLYMOUTH, Sheboygan, WI | Pass | State |
| 2024-10-01 | EASTERN GAS TRANSMISSION AND STORAGE, INC., SCHUTTE STATION | SEDALIA, Doddridge, WV | Pass | State |
| 2024-10-01 | CNX MIDSTREAM OPERATING COMPANY LLC, SHIRLEY STATION | ALMA, Tyler, WV | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-01 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2024-09-30 | GEORGIA-PACIFIC SAVANNAH RIVER LLC | RINCON, Effingham, GA | Pass | State |
| 2024-09-30 | MECO - PALAAU | PALAAU, Maui, HI | Pass | State |
| 2024-09-30 | MID-STATES MATERIALS - PLUMMER CREEK QUARRY | PLUMMER CREEK QUARRY, Osage, KS | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | BUILDEX, INC. | DEARBORN, Platte, MO | Pass | State |
| 2024-09-30 | UNIVERSITY OF MISSISSIPPI, THE | UNIVERSITY, Lafayette, MS | Pass | State |
| 2024-09-30 | UNIVERSITY OF MISSISSIPPI, THE | UNIVERSITY, Lafayette, MS | Pass | State |
| 2024-09-30 | UNIVERSITY OF MISSISSIPPI, THE | UNIVERSITY, Lafayette, MS | Pass | State |
| 2024-09-30 | UNIVERSITY OF MISSISSIPPI, THE | UNIVERSITY, Lafayette, MS | Pass | State |
| 2024-09-30 | UNIVERSITY OF MISSISSIPPI, THE | UNIVERSITY, Lafayette, MS | Pass | State |
| 2024-09-30 | UNIVERSITY OF MISSISSIPPI, THE | UNIVERSITY, Lafayette, MS | Pass | State |
| 2024-09-30 | UNIVERSITY OF MISSISSIPPI, THE | UNIVERSITY, Lafayette, MS | Pass | State |
| 2024-09-30 | UNIVERSITY OF MISSISSIPPI, THE | UNIVERSITY, Lafayette, MS | Pass | State |
| 2024-09-30 | UNIVERSITY OF MISSISSIPPI, THE | UNIVERSITY, Lafayette, MS | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.