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 |
|---|---|---|---|---|
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | OWENS BROCKWAY GLASS | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-25 | PLAINS END, LLC | ARVADA, Jefferson, CO | Pass | State |
| 2021-10-25 | PLAINS END, LLC | ARVADA, Jefferson, CO | Pass | State |
| 2021-10-25 | PLAINS END, LLC | ARVADA, Jefferson, CO | Pass | State |
| 2021-10-25 | PLAINS END, LLC | ARVADA, Jefferson, CO | Pass | State |
| 2021-10-25 | WES DJ GATHERING - FREDERICK CS — high-priority violation on file | DACONO AREA, Weld, CO | Pass | State |
| 2021-10-25 | MIAMI-DADE WATER AND SEWER DEPARTMENT | MIAMI, Miami-Dade, FL | Pass | State |
| 2021-10-25 | MIAMI-DADE WATER AND SEWER DEPARTMENT | MIAMI, Miami-Dade, FL | Pass | State |
| 2021-10-25 | MIAMI-DADE WATER AND SEWER DEPARTMENT | MIAMI, Miami-Dade, FL | Pass | State |
| 2021-10-25 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-25 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-25 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-25 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-25 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-25 | PRIMARY PRODUCTS INGREDIENTS AMERICAS, LLC | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-25 | APAC-KANSAS CITY SHEARS DIV (MASTER EQUIP LIST)(AIR) | LINCOLN, Lincoln, KS | Pass | State |
| 2021-10-25 | APAC-KANSAS CITY SHEARS DIV (MASTER EQUIP LIST)(AIR) | LINCOLN, Lincoln, KS | Pass | State |
| 2021-10-25 | GENTEX OPTICS | DUDLEY, Worcester, MA | Pass | State |
| 2021-10-25 | CADILLAC CASTING, INC | CADILLAC, Wexford, MI | Pass | State |
| 2021-10-25 | GREAT LAKES GAS TRANS STATION #11 (TRANSCANADA #11 | BOYNE FALLS, Charlevoix, MI | Pass | State |
| 2021-10-25 | GREDE LLC - SAINT CLOUD | SAINT CLOUD, Benton, MN | Pass | State |
| 2021-10-25 | JBS WORTHINGTON MN | WORTHINGTON, Nobles, MN | Pass | State |
| 2021-10-25 | BATESVILLE MANUFACTURING LLC, VICKSBURG | VICKSBURG, Warren, MS | Pass | State |
| 2021-10-25 | BATESVILLE MANUFACTURING LLC, VICKSBURG | VICKSBURG, Warren, MS | Pass | State |
| 2021-10-25 | BATESVILLE MANUFACTURING LLC, VICKSBURG | VICKSBURG, Warren, MS | Pass | State |
| 2021-10-25 | BATESVILLE MANUFACTURING LLC, VICKSBURG | VICKSBURG, Warren, MS | Pass | State |
| 2021-10-25 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2021-10-25 | NELIGH ELECTRIC GENERATION — high-priority violation on file | NELIGH, Antelope, NE | Pass | State |
| 2021-10-25 | OXY - CEDAR CANYON EAST COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-10-25 | OXY - CEDAR CANYON EAST COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-10-25 | OXY - CEDAR CANYON EAST COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-10-25 | OXY - CEDAR CANYON EAST COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-10-25 | LONGWOOD - BOUGAINVILLE COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-10-25 | LONGWOOD - BOUGAINVILLE COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-10-25 | MUTUAL REDEVELOPMENT HOUSES | NEW YORK, New York, NY | Pass | State |
| 2021-10-25 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2021-10-25 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2021-10-25 | MARKWEST ARROWHEAD COMPRESSOR STATION | ATHENS, TOWNSHIP OF, Harrison, OH | Pass | State |
| 2021-10-25 | CONTINENTAL RESOURCES / PARK PLACE 1 21 16 MXH FACILITY | TUSSY, Stephens, OK | Pass | State |
| 2021-10-25 | HILCORP ENERGY CO/NCD CENTRAL FAC | NEW CASTLE, Lawrence, PA | Pass | State |
| 2021-10-25 | NORTHWEST PIPELINE LLC SNOHOMISH | SNOHOMISH, Snohomish, WA | Pass | Local |
| 2021-10-25 | NORTHWEST PIPELINE LLC SNOHOMISH | SNOHOMISH, Snohomish, WA | Pass | Local |
| 2021-10-24 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-23 | NUCOR STEEL SEATTLE INC | SEATTLE, King, WA | Pass | Local |
| 2021-10-23 | NUCOR STEEL SEATTLE INC | SEATTLE, King, WA | Pass | Local |
| 2021-10-23 | NUCOR STEEL SEATTLE INC | SEATTLE, King, WA | Pass | Local |
| 2021-10-23 | NUCOR STEEL SEATTLE INC | SEATTLE, King, WA | Pass | Local |
| 2021-10-22 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2021-10-22 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2021-10-22 | VERTEX REFINING ALABAMA LLC | SARALAND, Mobile, AL | Pass | State |
| 2021-10-22 | SANDERS LEAD CO | TROY, Pike, AL | Pass | State |
| 2021-10-22 | SANDERS LEAD CO | TROY, Pike, AL | Pass | State |
| 2021-10-22 | SANDERS LEAD CO | TROY, Pike, AL | Pass | State |
| 2021-10-22 | SANDERS LEAD CO | TROY, Pike, AL | Pass | State |
| 2021-10-22 | FLYWHEEL ENERGY COMPANY - PUMA NORTH CPF-1 | WILBURN, Cleburne, AR | Pass | State |
| 2021-10-22 | BECKER SPECIALTY CORP | FONTANA, San Bernardino, CA | Pass | Local |
| 2021-10-22 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2021-10-22 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2021-10-22 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2021-10-22 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2021-10-22 | BARGATH LLC - COTTONWOOD POINT CS | RIFLE AREA, Garfield, CO | Pass | State |
| 2021-10-22 | NAUGATUCK WPCA/POTW | NAUGATUCK (HISTORICAL), New Haven, CT | Fail | State |
| 2021-10-22 | CRODA, INC — high-priority violation on file | NEW CASTLE, New Castle, DE | Pass | State |
| 2021-10-22 | CRODA, INC — high-priority violation on file | NEW CASTLE, New Castle, DE | Pass | State |
| 2021-10-22 | CRODA, INC — high-priority violation on file | NEW CASTLE, New Castle, DE | Pass | State |
| 2021-10-22 | CRODA, INC — high-priority violation on file | NEW CASTLE, New Castle, DE | N/A | State |
| 2021-10-22 | CRODA, INC — high-priority violation on file | NEW CASTLE, New Castle, DE | Pass | State |
| 2021-10-22 | CRODA, INC — high-priority violation on file | NEW CASTLE, New Castle, DE | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.