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 |
|---|---|---|---|---|
| 2021-10-07 | EOG RESOURCES, INC. - JD CR AUG PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2021-10-07 | EOG RESOURCES, INC. - JD CR AUG PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2021-10-07 | FORD MOTOR COMPANY - OHIO ASSEMBLY PLANT — high-priority violation on file | AVON LAKE, Lorain, OH | Pass | State |
| 2021-10-07 | FORD MOTOR COMPANY - OHIO ASSEMBLY PLANT — high-priority violation on file | AVON LAKE, Lorain, OH | Pass | State |
| 2021-10-07 | ASCENT RESOURCES - UTICA LLC - DALRYMPLE SMF JF | ADENA, Jefferson, OH | Pass | State |
| 2021-10-07 | ASCENT RESOURCES - UTICA LLC - DALRYMPLE SMF JF | ADENA, Jefferson, OH | Pass | State |
| 2021-10-07 | ASCENT RESOURCES - UTICA LLC - DALRYMPLE SMF JF | ADENA, Jefferson, OH | Pass | State |
| 2021-10-07 | EMERY OLEOCHEMICALS LLC | CINCINNATI, Hamilton, OH | Pass | State |
| 2021-10-07 | EMERY OLEOCHEMICALS LLC | CINCINNATI, Hamilton, OH | Pass | State |
| 2021-10-07 | EMERY OLEOCHEMICALS LLC | CINCINNATI, Hamilton, OH | Pass | State |
| 2021-10-07 | CONTINENTAL RESOURCES / MCCLAIN 7 18 7XHW | MIDDLEBERG, Grady, OK | Pass | State |
| 2021-10-07 | CONTINENTAL RESOURCES / EMERY 4 16 9XHW MILLS 5 16 21XHW MILLS | MIDDLEBERG, Grady, OK | Pass | State |
| 2021-10-07 | TARGA PIPELINE MIDCONTINENT WESTOK LLC / WAYNOKA NATURAL GAS PROCESSING PLANT | ALVA, Woods, OK | Pass | State |
| 2021-10-07 | RAUSCH CREEK GENERATION LLC/FRAILEY TWP — high-priority violation on file | TREMONT, Schuylkill, PA | Pass | State |
| 2021-10-07 | WILLIAMS FIELD SVC CO LLC/ZICK COMP STA | KINGSLEY, Susquehanna, PA | Pass | State |
| 2021-10-07 | CNX GAS CO LLC/NV-62 WELLPAD | CLAYSVILLE, Washington, PA | Pass | State |
| 2021-10-07 | US MEDICAL NITRILE & POLYISOPRENE CHEMICAL COMPANY LLC | HONEA PATH, Anderson, SC | Pass | State |
| 2021-10-07 | SHAKESPEARE CO LLC DBA JARDEN APPLIED MATERIALS | COLUMBIA, Richland, SC | Pass | State |
| 2021-10-07 | RING NECK ENERGY & FEED LLC — high-priority violation on file | ONIDA, Sully, SD | Pass | State |
| 2021-10-07 | CEMEX CONSTRUCTION MATERIALS ATLANTIC, LLC - KNOXVILLE CEMENT PLANT | KNOXVILLE, Knox, TN | Pass | State |
| 2021-10-07 | CARLEX GLASS AMERICA, LLC - NASHVILLE GLASS PLANT | NASHVILLE, Davidson, TN | Pass | Local |
| 2021-10-07 | IRON MOUNTAIN QUARRY LLC | GRANITE FALLS, Snohomish, WA | Pass | Local |
| 2021-10-07 | NORTH PACIFIC PAPER CORP. — high-priority violation on file | LONGVIEW, Cowlitz, WA | Fail | Local |
| 2021-10-07 | APPALACHIA MIDSTREAM SERVICES, L.L.C., PIONEER FACILITY | WHEELING, Ohio, WV | Pass | State |
| 2021-10-07 | PRCC COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2021-10-07 | GREEN RIVER COMPRESSOR STATION (NORTHWEST PIPELINE) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2021-10-06 | BONANZA POWER PLANT | BONANZA, Uintah, UT | Pass | U.S. EPA |
| 2021-10-06 | BONANZA POWER PLANT | BONANZA, Uintah, UT | Pass | U.S. EPA |
| 2021-10-06 | GAS PROCESSORS INC | CASTLEBERRY, Conecuh, AL | Pass | State |
| 2021-10-06 | GAS PROCESSORS INC | CASTLEBERRY, Conecuh, AL | Pass | State |
| 2021-10-06 | CRESTWOOD CORPORATION | DOTHAN, Houston, AL | Pass | State |
| 2021-10-06 | DESOTO GATHERING COMPANY, LLC - STEELHEAD CPF-3 | CLINTON, Van Buren, AR | Pass | State |
| 2021-10-06 | DESOTO GATHERING COMPANY, LLC - STEELHEAD CPF-3 | CLINTON, Van Buren, AR | Pass | State |
| 2021-10-06 | EHRENBERG COMPRESSOR STATION | EHRENBERG, La Paz, AZ | Pass | State |
| 2021-10-06 | MITSUBISHI CHEMICAL CARBON FIBER AND COMPOSITES — high-priority violation on file | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2021-10-06 | ROHR, INC. | RIVERSIDE, Riverside, CA | Pass | Local |
| 2021-10-06 | CHEVRON USA — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-06 | CHEVRON USA — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-06 | CHEVRON USA — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-06 | CHEVRON USA — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-06 | CHEVRON USA — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-06 | CHEVRON USA — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-06 | ALGONQUIN GAS TRANSMISSION, LLC - CROMWELL COMPRESSOR STATION | CROMWELL, Middlesex, CT | Pass | State |
| 2021-10-06 | KRAFT HEINZ FOODS COMPANY | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-10-06 | CMC STEEL US, LLC | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-10-06 | CMC STEEL US, LLC | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-10-06 | CMC STEEL US, LLC | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-10-06 | CMC STEEL US, LLC | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-10-06 | CMC STEEL US, LLC | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-10-06 | CMC STEEL US, LLC | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-10-06 | CMC STEEL US, LLC | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-10-06 | ASCEND PERFORMANCE MATERIALS OPERATIONS — high-priority violation on file | CANTONMENT, Escambia, FL | Pass | State |
| 2021-10-06 | ASCEND PERFORMANCE MATERIALS OPERATIONS — high-priority violation on file | CANTONMENT, Escambia, FL | Pass | State |
| 2021-10-06 | ASCEND PERFORMANCE MATERIALS OPERATIONS — high-priority violation on file | CANTONMENT, Escambia, FL | Pass | State |
| 2021-10-06 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-06 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-06 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-06 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-06 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-06 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-06 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-06 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-06 | DART CONTAINER CORPORATION OF FLORIDA | PLANT CITY, Hillsborough, FL | Pass | State |
| 2021-10-06 | SEMINOLE ELECTRIC COOPERATIVE, INC. | PALATKA, Putnam, FL | Pass | State |
| 2021-10-06 | SEMINOLE ELECTRIC COOPERATIVE, INC. | PALATKA, Putnam, FL | Pass | State |
| 2021-10-06 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-06 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-06 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-06 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-06 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-06 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-06 | POWDER PROCESSING TECHNOLOGY LLC — high-priority violation on file | VALPARAISO, Porter, IN | Pass | State |
| 2021-10-06 | POWDER PROCESSING TECHNOLOGY LLC — high-priority violation on file | VALPARAISO, Porter, IN | Pass | State |
| 2021-10-06 | LINCOLN MUN. POWER PLANT | LINCOLN, Lincoln, KS | Pass | State |
| 2021-10-06 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 2 | SPRINGFIELD, Greene, MO | Pending | State |
| 2021-10-06 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 2 | SPRINGFIELD, Greene, MO | Pending | State |
| 2021-10-06 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2021-10-06 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2021-10-06 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2021-10-06 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2021-10-06 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2021-10-06 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2021-10-06 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2021-10-06 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2021-10-06 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2021-10-06 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2021-10-06 | USG INTERIORS LLC | GREENVILLE, Washington, MS | Pass | State |
| 2021-10-06 | USG INTERIORS LLC | GREENVILLE, Washington, MS | Pass | State |
| 2021-10-06 | USG INTERIORS LLC | GREENVILLE, Washington, MS | Pass | State |
| 2021-10-06 | USG INTERIORS LLC | GREENVILLE, Washington, MS | Pass | State |
| 2021-10-06 | APPALACHIAN STATE UNIVERSITY | BOONE, Watauga, NC | Pass | State |
| 2021-10-06 | LEGACY BIOGAS | FREMONT, Wayne, NC | Pending | State |
| 2021-10-06 | INGREDION, INC. — high-priority violation on file | WINSTON-SALEM, Forsyth, NC | Pass | Local |
| 2021-10-06 | INGREDION, INC. — high-priority violation on file | WINSTON-SALEM, Forsyth, NC | Pass | Local |
| 2021-10-06 | BASIN ELECTRIC POWER COOPERATIVE - LONESOME CREEK STATION - AQ | ALEXANDER, McKenzie, ND | Pass | State |
| 2021-10-06 | AMRIZE NORTHEAST INC. - RAYMOND | RAYMOND, Rockingham, NH | Pass | State |
| 2021-10-06 | PHILLIPS 66 (BAYWAY REF/CONOCO) — high-priority violation on file | LINDEN, Union, NJ | Pass | State |
| 2021-10-06 | GERKEN MATERIALS INC - PLANT 20A | PIONEER, Williams, OH | Pass | State |
| 2021-10-06 | GERKEN MATERIALS INC - PLANT 20A | PIONEER, Williams, OH | Pass | State |
| 2021-10-06 | ASCENT RESOURCES - UTICA LLC - OLIVER CLR BL | MARTINS FERRY, Belmont, OH | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.