EPA Air · stack tests by year
Air-emissions stack tests in 2021
- 35,950Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2021
- California 17,676
- Ohio 2,582
- Florida 1,540
- Indiana 1,495
- Oklahoma 1,318
- Georgia 1,189
- New Mexico 841
- Pennsylvania 788
- Alabama 621
- Mississippi 589
- Texas 574
- Arkansas 518
- Missouri 515
- Colorado 407
- Iowa 368
- Washington 334
- North Carolina 273
- Michigan 256
- Wisconsin 239
- Wyoming 235
- West Virginia 225
- Kentucky 222
- Delaware 222
- Montana 220
- South Carolina 217
- Minnesota 209
- Kansas 177
- Alaska 143
- Illinois 142
- Utah 140
- Nevada 136
- Virginia 131
- Nebraska 117
- Maine 110
- New Jersey 110
- New York 103
- Connecticut 99
- Tennessee 98
- North Dakota 93
- Arizona 93
- Idaho 90
- Louisiana 69
- Hawaii 64
- Maryland 56
- South Dakota 55
- District of Columbia 54
- New Hampshire 53
- Oregon 45
- Rhode Island 34
- Massachusetts 29
- Puerto Rico 19
- Vermont 17
Other years
Air-emissions stack tests recorded in 2021
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2021-12-22 | DIVERSIFIED PRODUCTION LLC - POOL UNIT | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2021-12-22 | DIVERSIFIED PRODUCTION LLC - POOL UNIT | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2021-12-22 | DIVERSIFIED PRODUCTION LLC - POOL UNIT | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2021-12-22 | DIVERSIFIED PRODUCTION LLC / MURPHY 1 18 STATION | WEATHERFORD, Custer, OK | Pass | State |
| 2021-12-22 | CALPINE MID MERIT II LLC/ YORK ENERGY CENTER BLOCK 2 — high-priority violation on file | DELTA, York, PA | Pass | State |
| 2021-12-22 | SUSQUEHANNA GATHERING/NORTH RANGE CPF 1 COMP STA | SUSQUEHANNA, Susquehanna, PA | Pass | State |
| 2021-12-22 | HAMPTON/NASA STEAM PLANT | HAMPTON, Hampton (city), VA | Pass | State |
| 2021-12-21 | BLUE BUTTES COMPRESSOR STATION AND PUMP STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2021-12-21 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Pass | State |
| 2021-12-21 | CHEVRON PRODUCTS CO — high-priority violation on file | EL SEGUNDO, Los Angeles, CA | Pass | Local |
| 2021-12-21 | TESORO LOGISTICS MARINE TERMINAL 2 | LONG BEACH, Los Angeles, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-21 | PACIFIC PIPELINE SYSTEM, LLC — high-priority violation on file | METTLER, Kern, CA | Pass | Local |
| 2021-12-21 | PACIFIC PIPELINE SYSTEM, LLC — high-priority violation on file | METTLER, Kern, CA | Pass | Local |
| 2021-12-21 | KIMBERLY-CLARK CORPORATION, NEW MILFORD MILL — high-priority violation on file | NEW MILFORD, Litchfield, CT | Pass | State |
| 2021-12-21 | GRP FRANKLIN, LLC | CARNESVILLE, Franklin, GA | Pass | State |
| 2021-12-21 | GRP FRANKLIN, LLC | CARNESVILLE, Franklin, GA | Pass | State |
| 2021-12-21 | GRP FRANKLIN, LLC | CARNESVILLE, Franklin, GA | Pass | State |
| 2021-12-21 | GRP FRANKLIN, LLC | CARNESVILLE, Franklin, GA | Pass | State |
| 2021-12-21 | GRP FRANKLIN, LLC | CARNESVILLE, Franklin, GA | Pass | State |
| 2021-12-21 | GRP FRANKLIN, LLC | CARNESVILLE, Franklin, GA | Pass | State |
| 2021-12-21 | BD GLOBAL DISTRIBUTION CENTER | COVINGTON, Newton, GA | Pass | State |
| 2021-12-21 | JAS. W. GLOVER (0257) | PUHI, Kauai, HI | Pass | State |
| 2021-12-21 | BAYER CROPSCIENCE LP 3670/6908/6909 | MUSCATINE, Muscatine, IA | Pass | State |
| 2021-12-21 | BAYER CROPSCIENCE LP 3670/6908/6909 | MUSCATINE, Muscatine, IA | Pass | State |
| 2021-12-21 | BAYER CROPSCIENCE LP 3670/6908/6909 | MUSCATINE, Muscatine, IA | Pass | State |
| 2021-12-21 | CARPENTER COMPANY | ELKHART, Elkhart, IN | Pass | State |
| 2021-12-21 | SIGECO AB BROWN GENERATING STATION | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-12-21 | FREUDENBERG NOK GENERAL PARTNERSHIP | MORRISTOWN, Shelby, IN | Pass | State |
| 2021-12-21 | FREUDENBERG NOK GENERAL PARTNERSHIP | MORRISTOWN, Shelby, IN | Pass | State |
| 2021-12-21 | BAVARIAN TRUCKING COMPANY INC | WALTON, Boone, KY | Pass | State |
| 2021-12-21 | SABINE PASS LNG LP AND SABINE PASS LIQUEFACTION LLC - SABINE PASS LNG TERMINAL | CAMERON, Cameron, LA | Pass | State |
| 2021-12-21 | BELDEN FARMS ORGANIC RECYCLERY | HATFIELD, Hampshire, MA | N/A | State |
| 2021-12-21 | GREDE IRON MOUNTAIN, LLC — high-priority violation on file | KINGSFORD, Dickinson, MI | Pass | State |
| 2021-12-21 | BETZ INDUSTRIES, INC. | GRAND RAPIDS, Kent, MI | Pending | State |
| 2021-12-21 | UNITED STATES GYPSUM COMPANY | RIVER ROUGE, Wayne, MI | Pass | State |
| 2021-12-21 | NORTHERN BORDER PIPELINE - COMPRESSOR 13 | TRIMONT, Martin, MN | Pass | State |
| 2021-12-21 | OWENS-CORNING STATELINE | JOPLIN, Jasper, MO | Fail | State |
| 2021-12-21 | OWENS-CORNING STATELINE | JOPLIN, Jasper, MO | Fail | State |
| 2021-12-21 | OWENS-CORNING STATELINE | JOPLIN, Jasper, MO | Fail | State |
| 2021-12-21 | MDU - GLENDIVE | GLENDIVE, Dawson, MT | Pass | State |
| 2021-12-21 | MDU - GLENDIVE | GLENDIVE, Dawson, MT | Pass | State |
| 2021-12-21 | BLYTHE BROTHERS ASPHALT COMPANY, LLC | CHARLOTTE, Mecklenburg, NC | Pass | Local |
| 2021-12-21 | COLD RIVER MATERIALS - WALPOLE (S&G) | WALPOLE, Cheshire, NH | Pass | State |
| 2021-12-21 | COLD RIVER MATERIALS - WALPOLE (S&G) | WALPOLE, Cheshire, NH | Pass | State |
| 2021-12-21 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2021-12-21 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2021-12-21 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2021-12-21 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2021-12-21 | PPG - TESLIN | BARBERTON, Summit, OH | Pass | State |
| 2021-12-21 | ONEOK FIELD SERVICES CO LLC / PAYNE COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2021-12-21 | CONTINENTAL RESOURCES / LEXINGTON 1 32 29XHW GRAMERCY 1 32 5 8 | POOLEVILLE, Carter, OK | Pass | State |
| 2021-12-21 | CONTINENTAL RESOURCES / AMSTERDAM 1 35 26XHW | RATLIFF CITY, Carter, OK | Pass | State |
| 2021-12-21 | ET GATHERING PROCESSING LLC / CYCLONE COMPRESSOR STATION | SEILING, Dewey, OK | Pass | State |
| 2021-12-21 | ET GATHERING PROCESSING LLC / CYCLONE COMPRESSOR STATION | SEILING, Dewey, OK | Pass | State |
| 2021-12-21 | ENERFIN GATHERING EAST LLC / SEMINOLE COMPRESSOR STATION | SEMINOLE, Seminole, OK | Pass | State |
| 2021-12-21 | ENERFIN GATHERING EAST LLC / SEMINOLE COMPRESSOR STATION | SEMINOLE, Seminole, OK | Pass | State |
| 2021-12-21 | PENN MED LANCASTER GEN HOSP/LANCASTER GEN HOSP | LANCASTER, Lancaster, PA | Pass | State |
| 2021-12-21 | BRADFORD FOREST/MCKEAN | BRADFORD, McKean, PA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in 2021. It lists 35,950 stack tests recorded nationwide in 2021.