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 |
|---|---|---|---|---|
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-08 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-08 | PACIFIC ETHANOL STOCKTON — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-08 | PACIFIC ETHANOL STOCKTON — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-08 | PACIFIC ETHANOL STOCKTON — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-08 | PACIFIC ETHANOL STOCKTON — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-08 | PACIFIC ETHANOL STOCKTON — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-08 | PACIFIC ETHANOL STOCKTON — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-08 | PACIFIC ETHANOL STOCKTON — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-08 | PACIFIC ETHANOL STOCKTON — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-08 | PACIFIC ETHANOL STOCKTON — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-08 | PACIFIC ETHANOL STOCKTON — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-08 | SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file | COMMERCE CITY, Adams, CO | Pass | State |
| 2021-12-08 | ROCKY MOUNTAIN NAT GAS - PICEANCE | MEEKER 17.4 MI. W OF, Rio Blanco, CO | N/A | State |
| 2021-12-08 | ROCKY MOUNTAIN NAT GAS - PICEANCE | MEEKER 17.4 MI. W OF, Rio Blanco, CO | N/A | State |
| 2021-12-08 | ROCKY MOUNTAIN NAT GAS - PICEANCE | MEEKER 17.4 MI. W OF, Rio Blanco, CO | Pass | State |
| 2021-12-08 | ROCKY MOUNTAIN NAT GAS - PICEANCE | MEEKER 17.4 MI. W OF, Rio Blanco, CO | Pass | State |
| 2021-12-08 | DUKE ENERGY FLORIDA, LLC | CRYSTAL RIVER, Citrus, FL | Pass | State |
| 2021-12-08 | DUKE ENERGY FLORIDA, LLC | CRYSTAL RIVER, Citrus, FL | Pass | State |
| 2021-12-08 | ASCEND PERFORMANCE MATERIALS OPERATIONS — high-priority violation on file | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-08 | ASCEND PERFORMANCE MATERIALS OPERATIONS — high-priority violation on file | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-08 | ASCEND PERFORMANCE MATERIALS OPERATIONS — high-priority violation on file | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-08 | ASCEND PERFORMANCE MATERIALS OPERATIONS — high-priority violation on file | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-08 | INTERNATIONAL PAPER COMPANY | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-08 | INTERNATIONAL PAPER COMPANY | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-08 | INTERNATIONAL PAPER COMPANY | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-08 | INTERNATIONAL PAPER COMPANY | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-08 | INTERNATIONAL PAPER COMPANY | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-08 | INTERNATIONAL PAPER COMPANY | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-08 | MOSAIC FERTILIZER, LLC | PLANT CITY, Hillsborough, FL | Pass | State |
| 2021-12-08 | MOSAIC FERTILIZER, LLC | PLANT CITY, Hillsborough, FL | Pass | State |
| 2021-12-08 | MOSAIC FERTILIZER, LLC | PLANT CITY, Hillsborough, FL | Pass | State |
| 2021-12-08 | FLORIDA GAS TRANSMISSION COMPANY | ORLANDO, Orange, FL | Pass | State |
| 2021-12-08 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-08 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-08 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-08 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-08 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-08 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-08 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-08 | DUKE ENERGY FLORIDA, LLC | LIVE OAK, Suwannee, FL | Pass | State |
| 2021-12-08 | DUKE ENERGY FLORIDA, LLC | LIVE OAK, Suwannee, FL | Pass | State |
| 2021-12-08 | DUKE ENERGY FLORIDA, LLC | LIVE OAK, Suwannee, FL | Pass | State |
| 2021-12-08 | DUKE ENERGY FLORIDA, LLC | LIVE OAK, Suwannee, FL | Pass | State |
| 2021-12-08 | GA POWER CO. PLANT YATES | NEWNAN, Coweta, GA | Pass | State |
| 2021-12-08 | GA POWER CO. PLANT YATES | NEWNAN, Coweta, GA | Pass | State |
| 2021-12-08 | INTERNATIONAL PAPER COMPANY - ROME MILL | ROME, Floyd, GA | Pass | State |
| 2021-12-08 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC - COMPRESSOR STATION 120 | STOCKBRIDGE, Henry, GA | Pass | State |
| 2021-12-08 | USDA-NATIONAL ANIMAL DISEASE CENTER & NATIONAL VETERINARY SERVICE LABORATORY | AMES, Story, IA | Pass | State |
| 2021-12-08 | USDA-NATIONAL ANIMAL DISEASE CENTER & NATIONAL VETERINARY SERVICE LABORATORY | AMES, Story, IA | Pass | State |
| 2021-12-08 | USDA-NATIONAL ANIMAL DISEASE CENTER & NATIONAL VETERINARY SERVICE LABORATORY | AMES, Story, IA | Pass | State |
| 2021-12-08 | SUPERIOR BLASTING 00620 | BOISE, Ada, ID | Pass | State |
| 2021-12-08 | HEIDELBERG MATERIALS US CEMENT LLC | SELLERSBURG, Clark, IN | Pass | State |
| 2021-12-08 | GARFIELD FACILITY LLC — high-priority violation on file | MUNCIE, Delaware, IN | Pass | State |
| 2021-12-08 | HARRISON STEEL CASTINGS COMPANY — high-priority violation on file | ATTICA, Fountain, IN | Pass | State |
| 2021-12-08 | GREDE LLC — high-priority violation on file | NEW CASTLE, Henry, IN | Pass | State |
| 2021-12-08 | MCPHERSON AREA SOLID WASTE TRANSFER STATION (AIR CURT CMB)(AIR) | MCPHERSON, McPherson, KS | Pass | State |
| 2021-12-08 | CHANUTE MUN. POWER PLANT #3 (AIR) | CHANUTE, Neosho, KS | Pass | State |
| 2021-12-08 | CENTRAL MOTOR WHEEL OF AMERICA INC | PARIS, Bourbon, KY | Pass | State |
| 2021-12-08 | KY UTILITIES CO - GHENT STATION | GHENT, Carroll, KY | Pass | State |
| 2021-12-08 | PHILLIPS 66 CO - LAKE CHARLES REFINERY — high-priority violation on file | WESTLAKE, Calcasieu, LA | Pass | State |
| 2021-12-08 | INDORAMA VENTURES OLEFINS LLC - WESTLAKE ETHYLENE PLANT | WESTLAKE, Calcasieu, LA | Pass | State |
| 2021-12-08 | TRANSCONTINENTAL GAS PIPELINE | ELLICOTT CITY, Howard, MD | Pass | State |
| 2021-12-08 | WESTBROOK ENERGY CENTER, LLC | WESTBROOK, Cumberland, ME | Pass | State |
| 2021-12-08 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2021-12-08 | BREMBO NORTH AMERICA, INC. — high-priority violation on file | HOMER, Calhoun, MI | Fail | State |
| 2021-12-08 | FLINT HILLS RESOURCES PINE BEND REFINERY | ROSEMOUNT, Dakota, MN | Pass | State |
| 2021-12-08 | HIGHWATER ETHANOL LLC | LAMBERTON, Redwood, MN | Pass | State |
| 2021-12-08 | SOUTHERN STAR CENTRAL PIPELINE-PECULIAR | PECULIAR, Cass, MO | Pass | State |
| 2021-12-08 | SOUTHERN STAR CENTRAL PIPELINE-PECULIAR | PECULIAR, Cass, MO | Pass | State |
| 2021-12-08 | SOUTHERN STAR CENTRAL PIPELINE-PECULIAR | PECULIAR, Cass, MO | Pass | State |
| 2021-12-08 | EMPIRE DISTRICT ELECTRIC CO. - STATE LINE POWER PLANT | JOPLIN, Jasper, MO | Pass | State |
| 2021-12-08 | NEW MADRID POWER PLANT-ASSOC ELEC COOP | MARSTON, New Madrid, MO | Pass | State |
| 2021-12-08 | NEW MADRID POWER PLANT-ASSOC ELEC COOP | MARSTON, New Madrid, MO | Pass | State |
| 2021-12-08 | NEW MADRID POWER PLANT-ASSOC ELEC COOP | MARSTON, New Madrid, MO | Pending | State |
| 2021-12-08 | MAGNITUDE 7 METALS, LLC | MARSTON, New Madrid, MO | Pending | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.