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 |
|---|---|---|---|---|
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file | PARACHUTE 10.1 MI. W OF, Garfield, CO | Pass | State |
| 2021-10-26 | WES DJ GATHERING - FREDERICK CS — high-priority violation on file | DACONO AREA, Weld, CO | Pass | State |
| 2021-10-26 | FORT MYER PLANT II | WASHINGTON, District of Columbia, DC | Pass | State |
| 2021-10-26 | TPSI TERMINALS LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-26 | JAMES HARDIE BUILDING PRODUCTS, INC. — high-priority violation on file | PLANT CITY, Hillsborough, FL | Pass | State |
| 2021-10-26 | JAMES HARDIE BUILDING PRODUCTS, INC. — high-priority violation on file | PLANT CITY, Hillsborough, FL | Pass | State |
| 2021-10-26 | CERTAINTEED LLC — high-priority violation on file | ATHENS, Clarke, GA | Pass | State |
| 2021-10-26 | CERTAINTEED LLC — high-priority violation on file | ATHENS, Clarke, GA | N/A | State |
| 2021-10-26 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-26 | EMORY UNIVERSITY | ATLANTA, DeKalb, GA | Pass | State |
| 2021-10-26 | SOUTHERN NATURAL GAS COMPANY, L.L.C. - ALBANY COMP. STATION | ALBANY, Dougherty, GA | Pass | State |
| 2021-10-26 | TOYOTA INDUSTRIES COMPRESSOR PARTS AMERICA, CO. | PENDERGRASS, Jackson, GA | Pass | State |
| 2021-10-26 | VERMEER MFG CO INC | PELLA, Marion, IA | Pass | State |
| 2021-10-26 | MID-AMERICA PIPELINE CO-WHITING STATION | WHITING, Monona, IA | Pass | State |
| 2021-10-26 | BRIGHAM YOUNG UNIVERSITY IDAHO — high-priority violation on file | REXBURG, Madison, ID | Pass | State |
| 2021-10-26 | EXXON MOBIL OIL CORP — high-priority violation on file | CHANNAHON, Will, IL | Pass | State |
| 2021-10-26 | ARCHER DANIELS MIDLAND COMPANY — high-priority violation on file | FRANKFORT, Clinton, IN | Pass | State |
| 2021-10-26 | ARCHER DANIELS MIDLAND COMPANY — high-priority violation on file | FRANKFORT, Clinton, IN | Pass | State |
| 2021-10-26 | ARCHER DANIELS MIDLAND COMPANY — high-priority violation on file | FRANKFORT, Clinton, IN | Pass | State |
| 2021-10-26 | HOT MIX INC | GREENSBURG, Decatur, IN | Pass | State |
| 2021-10-26 | HOT MIX INC | GREENSBURG, Decatur, IN | Pass | State |
| 2021-10-26 | HOT MIX INC | GREENSBURG, Decatur, IN | Pass | State |
| 2021-10-26 | HOT MIX INC | GREENSBURG, Decatur, IN | Pass | State |
| 2021-10-26 | CLEVELAND-CLIFFS BURNS HARBOR LLC — high-priority violation on file | BURNS HARBOR, Porter, IN | Pass | State |
| 2021-10-26 | VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-26 | VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-26 | VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-26 | VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-26 | VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-26 | VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-26 | VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-26 | VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-26 | VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-26 | PRIMARY PRODUCTS INGREDIENTS AMERICAS, LLC | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-26 | PRIMARY PRODUCTS INGREDIENTS AMERICAS, LLC | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-26 | AMCOR FLEXIBLES NORTH AMERICA INCORPORATED | TERRE HAUTE, Vigo, IN | Fail | State |
| 2021-10-26 | DANIMER SCIENTIFIC KY | WINCHESTER, Clark, KY | Pass | State |
| 2021-10-26 | MILFORD REGIONAL MEDICAL CENTER INC | MILFORD, TOWN OF, Worcester, MA | Pass | State |
| 2021-10-26 | BREMBO NORTH AMERICA, INC. — high-priority violation on file | HOMER, Calhoun, MI | Fail | State |
| 2021-10-26 | WEST FRASER US EWP - BEMIDJI | SOLWAY, Beltrami, MN | Fail | State |
| 2021-10-26 | ANDERSEN CORPORATION | BAYPORT, Washington, MN | Pass | State |
| 2021-10-26 | CLAY COUNTY MATERIALS LLC | LIBERTY, Clay, MO | Pass | State |
| 2021-10-26 | CLAY COUNTY MATERIALS LLC | LIBERTY, Clay, MO | Pass | State |
| 2021-10-26 | CLAY COUNTY MATERIALS LLC | LIBERTY, Clay, MO | Pass | State |
| 2021-10-26 | CLAY COUNTY MATERIALS LLC | LIBERTY, Clay, MO | Pass | State |
| 2021-10-26 | CLAY COUNTY MATERIALS LLC | LIBERTY, Clay, MO | Pass | State |
| 2021-10-26 | BAYER CROPSCIENCE | KANSAS CITY, Jackson, MO | Pass | State |
| 2021-10-26 | THE BOEING COMPANY | SAINT LOUIS COUNTY, St. Louis, MO | Pass | State |
| 2021-10-26 | MISSISSIPPI POWER COMPANY, CHEVRON COGENERATING PLANT | PASCAGOULA, Jackson, MS | Pass | State |
| 2021-10-26 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2021-10-26 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2021-10-26 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2021-10-26 | NORTHWESTERN ENERGY MAINLINE #1 | CUT BANK, Glacier, MT | Pass | State |
| 2021-10-26 | NORTHWESTERN ENERGY MAINLINE #1 | CUT BANK, Glacier, MT | Pass | State |
| 2021-10-26 | NORTHWESTERN ENERGY MAINLINE #1 | CUT BANK, Glacier, MT | Pass | State |
| 2021-10-26 | NORTHWESTERN ENERGY MAINLINE #1 | CUT BANK, Glacier, MT | Pass | State |
| 2021-10-26 | NORTHWESTERN ENERGY MAINLINE #1 | CUT BANK, Glacier, MT | Pass | State |
| 2021-10-26 | NORTHWESTERN ENERGY MAINLINE #1 | CUT BANK, Glacier, MT | Pass | State |
| 2021-10-26 | PCS PHOSPHATE COMPANY, INC. - AURORA | AURORA, Beaufort, NC | Pass | State |
| 2021-10-26 | THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL | CHAPEL HILL, Orange, NC | Pass | State |
| 2021-10-26 | THARALDSON ETHANOL PLANT I, LLC - AQ | CASSELTON, Cass, ND | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.