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 |
|---|---|---|---|---|
| 2021-10-28 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-28 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-28 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2021-10-28 | LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file | PARACHUTE 10.1 MI. W OF, Garfield, CO | Pass | State |
| 2021-10-28 | WES DJ GATHERING - FREDERICK CS — high-priority violation on file | DACONO AREA, Weld, CO | Pass | State |
| 2021-10-28 | BONANZA CRK ENERGY - NORTH PLATTE 24-34 | KERSEY 6.1 MI. N OF, Weld, CO | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | N/A | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | N/A | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | N/A | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | N/A | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2021-10-28 | FIRST STATE GENERATION, LLC | WILMINGTON, New Castle, DE | Pass | State |
| 2021-10-28 | FIRST STATE GENERATION, LLC | WILMINGTON, New Castle, DE | Pass | State |
| 2021-10-28 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-28 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-28 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-28 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-28 | ENVIROFOCUS TECHNOLOGIES DBA GOPHER RESO — high-priority violation on file | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-28 | SR 151 MUNICIPAL SOLID WASTE LANDFILL | RINGGOLD, Catoosa, GA | Pass | State |
| 2021-10-28 | SR 151 MUNICIPAL SOLID WASTE LANDFILL | RINGGOLD, Catoosa, GA | Pass | State |
| 2021-10-28 | SR 151 MUNICIPAL SOLID WASTE LANDFILL | RINGGOLD, Catoosa, GA | Pass | State |
| 2021-10-28 | AMALGAMATED SUGAR COMPANY - PAUL | PAUL, Minidoka, ID | Pass | State |
| 2021-10-28 | NLMK INDIANA — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2021-10-28 | NLMK INDIANA — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2021-10-28 | NLMK INDIANA — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2021-10-28 | CONSOLIDATED TERMINALS AND LOGISTICS COMPANY | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-28 | EVONIK CORPORATION TIPPECANOE LABORATORIES — high-priority violation on file | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-28 | EVONIK CORPORATION TIPPECANOE LABORATORIES — high-priority violation on file | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-28 | EVONIK CORPORATION TIPPECANOE LABORATORIES — high-priority violation on file | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-28 | EVONIK CORPORATION TIPPECANOE LABORATORIES — high-priority violation on file | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-28 | EVONIK CORPORATION TIPPECANOE LABORATORIES — high-priority violation on file | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-28 | EVONIK CORPORATION TIPPECANOE LABORATORIES — high-priority violation on file | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-28 | EVONIK CORPORATION TIPPECANOE LABORATORIES — high-priority violation on file | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-28 | PRIMARY PRODUCTS INGREDIENTS AMERICAS, LLC | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2021-10-28 | CURTIS BAY ENERGY, LP — high-priority violation on file | BALTIMORE, Baltimore (city), MD | Pass | State |
| 2021-10-28 | GLOBAL COMPANIES LLC | SOUTH PORTLAND, Cumberland, ME | Pass | State |
| 2021-10-28 | PLAYER HOLDINGS, LLC | ASHLAND, Aroostook, ME | Pass | State |
| 2021-10-28 | PLAYER HOLDINGS, LLC | ASHLAND, Aroostook, ME | Pass | State |
| 2021-10-28 | DAKOTA AGGREGATES - UMORE PARK FACILITY | ROSEMOUNT, Dakota, MN | Pass | State |
| 2021-10-28 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2021-10-28 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2021-10-28 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2021-10-28 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2021-10-28 | STILLWATER MINING CO SMELTER | COLUMBUS, Stillwater, MT | Pass | State |
| 2021-10-28 | YELLOWSTONE POWER PLANT — high-priority violation on file | BILLINGS, Yellowstone, MT | Pass | State |
| 2021-10-28 | FUTURE FOAM, INC. | HIGH POINT, Guilford, NC | Pass | State |
| 2021-10-28 | STATE METAL INDUSTRIES | CAMDEN, Camden, NJ | Fail | State |
| 2021-10-28 | RDX 17-35H PAD (RDX 17-12H, 16H, 25H, 35H, 36H, 37H) | MALAGA, Eddy, NM | Pass | State |
| 2021-10-28 | SAND DUNES NORTH CORRIDOR WEST COMPRESSION STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-10-28 | SAND DUNES NORTH CORRIDOR WEST COMPRESSION STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-10-28 | SAND DUNES NORTH CORRIDOR WEST COMPRESSION STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-10-28 | SAND DUNES NORTH CORRIDOR WEST COMPRESSION STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-10-28 | CHARLES LING WEST FED TANK BATTERY | JAL, Lea, NM | Pass | State |
| 2021-10-28 | WHITE HORSE COMPRESSOR STATION | JAL, Lea, NM | Incomplete | State |
| 2021-10-28 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2021-10-28 | EMD ACQUISITION, LLC — high-priority violation on file | HENDERSON, Clark, NV | Pass | Local |
| 2021-10-28 | ANR PIPELINE COMPANY | DEFIANCE, Defiance, OH | Pass | State |
| 2021-10-28 | ANR PIPELINE COMPANY | DEFIANCE, Defiance, OH | Pass | State |
| 2021-10-28 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2021-10-28 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2021-10-28 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2021-10-28 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2021-10-28 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2021-10-28 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2021-10-28 | PILKINGTON NORTH AMERICA INC — high-priority violation on file | ROSSFORD, Wood, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2021-10-28 | THE LINCOLN ELECTRIC COMPANY | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2021-10-28 | THE LINCOLN ELECTRIC COMPANY | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2021-10-28 | MARKWEST OKLAHOMA GAS CO LLC / WATONGA COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2021-10-28 | MARKWEST OKLAHOMA GAS CO LLC / OKARCHE COMPRESSOR STATION | OKARCHE, Canadian, OK | Pass | State |
| 2021-10-28 | ONEOK FIELD SERVICES CO LLC / CHEROKEE COMPRESSOR STATION | ERIN SPRINGS, Garvin, OK | Pass | State |
| 2021-10-28 | ONEOK FIELD SERVICES CO LLC / RIDDLE COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2021-10-28 | ONEOK FIELD SERVICES CO LLC / RIDDLE COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2021-10-28 | PETROLINK ENERGY LLC / CABLE COMPRESSOR STATION | BLOCKER, Pittsburg, OK | Pass | State |
| 2021-10-28 | PETROLINK ENERGY LLC / CABLE COMPRESSOR STATION | BLOCKER, Pittsburg, OK | Pass | State |
| 2021-10-28 | CONSOL PA COAL CO LLC/BAILEY PREP PLT — high-priority violation on file | WEST FINLEY, Greene, PA | Pass | State |
| 2021-10-28 | GRAYMONT PA INC/PLEASANT GAP & CON-LIME & BELLEFONTE PLTS | BELLEFONTE, Centre, PA | Pass | State |
| 2021-10-28 | EQT ARO LLC/TRACT 285 COMP STA | NORTH BEND, Clinton, PA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.