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 |
|---|---|---|---|---|
| 2021-12-31 | LHOIST NORTH AMERICA OF ARIZONA - APEX PLANT — high-priority violation on file | LAS VEGAS, Clark, NV | Pass | Local |
| 2021-12-31 | LHOIST NORTH AMERICA OF ARIZONA - APEX PLANT — high-priority violation on file | LAS VEGAS, Clark, NV | Pass | Local |
| 2021-12-31 | LHOIST NORTH AMERICA OF ARIZONA - APEX PLANT — high-priority violation on file | LAS VEGAS, Clark, NV | Pass | Local |
| 2021-12-31 | CLEVELAND CLIFFS STEELTON LLC/STEELTON | STEELTON, Dauphin, PA | Pass | State |
| 2021-12-30 | PAR MONTANA BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2021-12-30 | LONGWOOD - STEBBINS COMPRESSOR STATION | CARLSBAD, Eddy, NM | Pass | State |
| 2021-12-30 | LONGWOOD - STEBBINS COMPRESSOR STATION | CARLSBAD, Eddy, NM | Pass | State |
| 2021-12-30 | LONGWOOD - STEBBINS COMPRESSOR STATION | CARLSBAD, Eddy, NM | Pass | State |
| 2021-12-30 | JR SIMPLOT COMPANY | OVERTON, Clark, NV | Pass | Local |
| 2021-12-30 | MOUNTAIN STATE CLEAN ENERGY, LLC, MAIDSVILLE | MAIDSVILLE, Monongalia, WV | Pass | State |
| 2021-12-29 | INTERIOR GAS UTILITY (FORMERLY TITAN A / LIQUEFIED NATURAL GAS PLANT #1 | WASILLA, Matanuska-Susitna, AK | Pass | State |
| 2021-12-29 | INTERIOR GAS UTILITY (FORMERLY TITAN A / LIQUEFIED NATURAL GAS PLANT #1 | WASILLA, Matanuska-Susitna, AK | Pass | State |
| 2021-12-29 | HENKEL ELECTRONIC MATERIALS LLC | COMPTON, Los Angeles, CA | Pass | Local |
| 2021-12-29 | TEVA PHARMACEUTICALS | DAVIE, Broward, FL | Pass | State |
| 2021-12-29 | TEVA PHARMACEUTICALS | DAVIE, Broward, FL | Pass | State |
| 2021-12-29 | CLEARWATER PAPER CORPORATION - AUGUSTA MILL — high-priority violation on file | AUGUSTA, Richmond, GA | Pass | State |
| 2021-12-29 | GLEN-GERY CORP | MARSEILLES, La Salle, IL | Pass | State |
| 2021-12-29 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2021-12-29 | ANR PIPELINE COMPANY SHELBYVILLE COMPRESSOR STATION | SHELBYVILLE, Shelby, IN | Pass | State |
| 2021-12-29 | ANR PIPELINE COMPANY SHELBYVILLE COMPRESSOR STATION | SHELBYVILLE, Shelby, IN | Pass | State |
| 2021-12-29 | THE CHEMOURS COMPANY FC, LLC | LOUISVILLE, Jefferson, KY | Pass | Local |
| 2021-12-29 | MAGNITUDE 7 METALS, LLC | MARSTON, New Madrid, MO | Pending | State |
| 2021-12-29 | MAGNITUDE 7 METALS, LLC | MARSTON, New Madrid, MO | Pending | State |
| 2021-12-29 | LONGWOOD - STEBBINS COMPRESSOR STATION | CARLSBAD, Eddy, NM | Pass | State |
| 2021-12-29 | LONGWOOD - STEBBINS COMPRESSOR STATION | CARLSBAD, Eddy, NM | Pass | State |
| 2021-12-29 | SALL'S BROTHERS CONSTRUCTION | ALBUQUERQUE, Bernalillo, NM | Pass | Local |
| 2021-12-29 | JR SIMPLOT COMPANY | OVERTON, Clark, NV | Pass | Local |
| 2021-12-29 | JR SIMPLOT COMPANY | OVERTON, Clark, NV | Pass | Local |
| 2021-12-29 | JR SIMPLOT COMPANY | OVERTON, Clark, NV | Pass | Local |
| 2021-12-29 | TEXAS EASTERN TRANS LP/MARIETTA | MARIETTA, Lancaster, PA | Pass | State |
| 2021-12-29 | ETC NORTHEAST PIPELINE LLC/BARTO COMP STA | HUGHESVILLE, Lycoming, PA | Pass | State |
| 2021-12-29 | APPALACHIAN POWER COMPANY, JOHN AMOS PLANT | WINFIELD, Putnam, WV | Pass | State |
| 2021-12-28 | R.E.C. TRANSPORT, INC. | RUSSELLVILLE, Pope, AR | Pass | State |
| 2021-12-28 | UTAH GAS - DRAGON TRAIL — high-priority violation on file | RANGELY 16.7 MI. S OF, Rio Blanco, CO | Pass | State |
| 2021-12-28 | EXPEDITION WATER SOLUTIONS - EWS #13 | KERSEY AREA, Weld, CO | Fail | State |
| 2021-12-28 | TEVA PHARMACEUTICALS | DAVIE, Broward, FL | Pass | State |
| 2021-12-28 | OSCEOLA FARMS | PAHOKEE, Palm Beach, FL | Pass | State |
| 2021-12-28 | OSCEOLA FARMS | PAHOKEE, Palm Beach, FL | Pass | State |
| 2021-12-28 | OSCEOLA FARMS | PAHOKEE, Palm Beach, FL | Pass | State |
| 2021-12-28 | OSCEOLA FARMS | PAHOKEE, Palm Beach, FL | Pass | State |
| 2021-12-28 | OSCEOLA FARMS | PAHOKEE, Palm Beach, FL | Pass | State |
| 2021-12-28 | OSCEOLA FARMS | PAHOKEE, Palm Beach, FL | Pass | State |
| 2021-12-28 | OSCEOLA FARMS | PAHOKEE, Palm Beach, FL | Pass | State |
| 2021-12-28 | ATLANTA GAS LIGHT COMPANY - MACON LNG PLANT | MACON, Jones, GA | Pass | State |
| 2021-12-28 | ATLANTA GAS LIGHT COMPANY - MACON LNG PLANT | MACON, Jones, GA | Pass | State |
| 2021-12-28 | ATLANTA GAS LIGHT COMPANY - MACON LNG PLANT | MACON, Jones, GA | Pass | State |
| 2021-12-28 | CARGILL INC-CEDAR RAPIDS_SW_SOYBEAN | CEDAR RAPIDS, Linn, IA | Pass | Local |
| 2021-12-28 | ORION ENGINEERED CARBONS LLC - IVANHOE CARBON BLACK PLANT — high-priority violation on file | FRANKLIN, St. Mary, LA | Pass | State |
| 2021-12-28 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | CHINA, St. Clair, MI | Pass | State |
| 2021-12-28 | KAO SPECIALTIES AMERICAS, LLC | HIGH POINT, Guilford, NC | Pass | State |
| 2021-12-28 | NPPD SHELDON STATION | HALLAM, Lancaster, NE | Pass | Local |
| 2021-12-28 | CUNNINGHAM STATION POWER PLANT | HOBBS, Lea, NM | Pass | State |
| 2021-12-28 | CUNNINGHAM STATION POWER PLANT | HOBBS, Lea, NM | Pass | State |
| 2021-12-28 | NINA CORTELL WEST FED COM TB | LOVING, Lea, NM | Pass | State |
| 2021-12-28 | IRON HORSE MIDSTREAM LLC / SILVER PIGEON COMPRESSOR STATION | NINNEKAH, Grady, OK | Pass | State |
| 2021-12-28 | TARGA PIPELINE MIDCONTINENT LLC / GOFF COMPRESSOR STATION | LITTLE CITY, Marshall, OK | Pass | State |
| 2021-12-28 | LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file | WHEATLAND, Platte, WY | Pass | State |
| 2021-12-27 | JASCO CRUSHING 00632 | BUHL, Twin Falls, ID | Pass | State |
| 2021-12-27 | CARGILL LACTIC ACID PLANT | BLAIR, Washington, NE | Pass | State |
| 2021-12-27 | DR. LANA WHITE FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2021-12-27 | MUSTANG GAS PRODUCTS LLC / BINGER GAS PLANT | BINGER, Caddo, OK | Pass | State |
| 2021-12-27 | 3M CO - GREYSTONE — high-priority violation on file | WAUSAU, Marathon, WI | Fail | State |
| 2021-12-23 | JOHNSON COMPRESSOR STATION | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2021-12-23 | JOHNSON COMPRESSOR STATION | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2021-12-23 | PUBLIC SERVICE CO - HAYDEN PLT | HAYDEN, Routt, CO | Pass | State |
| 2021-12-23 | SABINE PASS LNG LP AND SABINE PASS LIQUEFACTION LLC - SABINE PASS LNG TERMINAL | CAMERON, Cameron, LA | Pass | State |
| 2021-12-23 | SABINE PASS LNG LP AND SABINE PASS LIQUEFACTION LLC - SABINE PASS LNG TERMINAL | CAMERON, Cameron, LA | Pass | State |
| 2021-12-23 | CROWELL L&M #11 12 13 20 & 21 PRODUCTION FACILITY | PINE PRAIRIE, Evangeline, LA | Pass | State |
| 2021-12-23 | AMRIZE CEMENT INC. — high-priority violation on file | ALPENA, Alpena, MI | Pending | State |
| 2021-12-23 | BLACK RIVER GAS PROCESSING PLANT — high-priority violation on file | LOVING, Eddy, NM | Pass | State |
| 2021-12-23 | PPG - TESLIN | BARBERTON, Summit, OH | Pass | State |
| 2021-12-23 | ET GATHERING PROCESSING LLC / FRISCO COMPRESSOR STATION | CHICKASHA, Grady, OK | Pass | State |
| 2021-12-23 | RAUSCH CREEK GENERATION LLC/FRAILEY TWP — high-priority violation on file | TREMONT, Schuylkill, PA | Pass | State |
| 2021-12-23 | LPR ENERGY LLC/HENRY CLAY MIDSTREAM FAC | MARKLEYSBURG, Fayette, PA | Pass | State |
| 2021-12-22 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-22 | GRP MADISON, LLC — high-priority violation on file | COLBERT, Madison, GA | Pass | State |
| 2021-12-22 | GRP MADISON, LLC — high-priority violation on file | COLBERT, Madison, GA | Pass | State |
| 2021-12-22 | GRP MADISON, LLC — high-priority violation on file | COLBERT, Madison, GA | Pass | State |
| 2021-12-22 | GRP MADISON, LLC — high-priority violation on file | COLBERT, Madison, GA | Pass | State |
| 2021-12-22 | GRP MADISON, LLC — high-priority violation on file | COLBERT, Madison, GA | Pass | State |
| 2021-12-22 | GRP MADISON, LLC — high-priority violation on file | COLBERT, Madison, GA | Pass | State |
| 2021-12-22 | HAMILTON CO COAL LLC | MCLEANSBORO, Hamilton, IL | Pass | State |
| 2021-12-22 | PVS TECHNOLOGIES INC — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2021-12-22 | PVS TECHNOLOGIES INC — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2021-12-22 | THOMAS CRUSHING (PORTABLE) | SHAWNEE, Johnson, KS | Pass | State |
| 2021-12-22 | SABINE PASS LNG LP AND SABINE PASS LIQUEFACTION LLC - SABINE PASS LNG TERMINAL | CAMERON, Cameron, LA | Pass | State |
| 2021-12-22 | GERDAU MACSTEEL MONROE MILL — high-priority violation on file | MONROE, Monroe, MI | Pass | State |
| 2021-12-22 | WESTERN SUGAR COOPERATIVE — high-priority violation on file | BILLINGS, Yellowstone, MT | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.