EPA Air · stack tests by year
Air-emissions stack tests in 2023
- 26,911Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2023
- California 7,676
- Ohio 2,800
- Florida 1,589
- Indiana 1,487
- Oklahoma 1,420
- New Mexico 1,087
- Georgia 1,057
- Pennsylvania 889
- Alabama 689
- Wyoming 670
- Mississippi 625
- Arkansas 602
- Iowa 453
- Colorado 436
- Texas 395
- Missouri 328
- North Carolina 302
- Washington 283
- Wisconsin 251
- Michigan 229
- Minnesota 228
- Delaware 224
- South Carolina 222
- West Virginia 218
- Kentucky 210
- Tennessee 200
- Utah 196
- Montana 177
- Virginia 170
- North Dakota 157
- Illinois 152
- Nebraska 152
- Alaska 140
- Nevada 127
- New York 123
- Maine 111
- Connecticut 108
- Arizona 102
- Louisiana 77
- Idaho 77
- Hawaii 72
- New Hampshire 58
- New Jersey 56
- South Dakota 54
- Maryland 49
- Kansas 45
- Oregon 44
- District of Columbia 36
- Massachusetts 27
- Rhode Island 20
- Puerto Rico 6
- Vermont 5
Other years
Air-emissions stack tests recorded in 2023
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2023-11-28 | MOLSON COORS USA LLC | MILWAUKEE, Monroe, WI | Pass | State |
| 2023-11-28 | MONONGAHELA POWER COMPANY, HARRISON STATION | HAYWOOD, Harrison, WV | Pass | State |
| 2023-11-28 | COLUMBIA GAS TRANSMISSION, LLC, HUBBALL | BRANCHLAND, Lincoln, WV | Pass | State |
| 2023-11-28 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-11-28 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-11-28 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-11-27 | TESORO REFINING AND MARKETING CO — high-priority violation on file | WILMINGTON, Los Angeles, CA | Pass | Local |
| 2023-11-27 | TESORO REFINING AND MARKETING CO — high-priority violation on file | WILMINGTON, Los Angeles, CA | Pass | Local |
| 2023-11-27 | TESORO REFINING AND MARKETING CO — high-priority violation on file | WILMINGTON, Los Angeles, CA | Pass | Local |
| 2023-11-27 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-27 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-27 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-27 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-27 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-27 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-27 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-27 | DAVIESS CO FISCAL COURT | OWENSBORO, Daviess, KY | Pass | State |
| 2023-11-27 | DIMENSIONS 6 SECTION 8 GAS SALES COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-11-27 | DIMENSIONS 6 SECTION 8 GAS SALES COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-11-27 | CYPRESS 33 B CTB | MALAGA, Eddy, NM | Pass | State |
| 2023-11-27 | EOG RESOURCES, INC. - WILLIAMS CR MON PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2023-11-27 | EOG RESOURCES, INC. - WILLIAMS CR MON PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2023-11-27 | EOG RESOURCES, INC. - WILLIAMS CR MON PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2023-11-27 | EOG RESOURCES, INC. - LLOYD SMITH 1-15-7 PAD | SHERRODSVILLE, Carroll, OH | Pass | State |
| 2023-11-27 | EOG RESOURCES, INC. - LLOYD SMITH 1-15-7 PAD | SHERRODSVILLE, Carroll, OH | Pass | State |
| 2023-11-27 | EOG RESOURCES, INC. - LLOYD SMITH 1-15-7 PAD | SHERRODSVILLE, Carroll, OH | Pass | State |
| 2023-11-27 | VALIDUS ENERGY II MIDCON LLC / BRANNAN 1 34 27XH | AMBER, Grady, OK | Pass | State |
| 2023-11-27 | ENERFIN GATHERING EAST LLC / DUSTIN COMPRESSOR STATION | DUSTIN, Hughes, OK | Pass | State |
| 2023-11-27 | FW MIDCON I LLC / LUCILE 1708 4H 5H 6H 27X EMORY 1708 2H | LOYAL, Kingfisher, OK | Pass | State |
| 2023-11-27 | DCP OPERATING CO LP / THUNDER COMPRESSOR STATION | BRAY, Stephens, OK | Pass | State |
| 2023-11-27 | SEWARD GENERATING STATION/SEWARD | NEW FLORENCE, Indiana, PA | Pass | State |
| 2023-11-27 | WILLIAMS FIELD SVC CO LLC/SHIELDS COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2023-11-27 | EXPAND OPERATING LLC/MARIS SUS PAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2023-11-26 | GRAIN PROCESSING CORP — high-priority violation on file | MUSCATINE, Muscatine, IA | Pass | State |
| 2023-11-23 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2023-11-22 | WESTERN FOODS DELTA REGION | PINE BLUFF, Jefferson, AR | Pass | State |
| 2023-11-22 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2023-11-22 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2023-11-22 | PVS TECHNOLOGIES INC — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2023-11-22 | TROSPER 3H #1 TANK BATTERY - GREENWOOD-WASKOM FIELD | GREENWOOD, Caddo, LA | Pass | State |
| 2023-11-22 | TROSPER 3H #1 TANK BATTERY - GREENWOOD-WASKOM FIELD | GREENWOOD, Caddo, LA | Pass | State |
| 2023-11-22 | TROSPER 3H #1 TANK BATTERY - GREENWOOD-WASKOM FIELD | GREENWOOD, Caddo, LA | Pass | State |
| 2023-11-22 | UNIVERSITY OF MISSOURI POWER PLANT | COLUMBIA, Boone, MO | Pass | State |
| 2023-11-22 | UNIVERSITY OF MISSOURI POWER PLANT | COLUMBIA, Boone, MO | Pass | State |
| 2023-11-22 | CITY OF HIGH POINT - WARD WATER PLANT | HIGH POINT, Guilford, NC | Pass | State |
| 2023-11-22 | BLUE STEEL 21 FED CTB | LOVING, Eddy, NM | Pass | State |
| 2023-11-22 | VALDEZ BOOSTER STATION | LOVING, Eddy, NM | Pass | State |
| 2023-11-22 | GULFPORT APPALACHIA, LLC - SHIMBLE PAD | BELLAIRE, Belmont, OH | Pass | State |
| 2023-11-22 | GULFPORT APPALACHIA, LLC - SHIMBLE PAD | BELLAIRE, Belmont, OH | Pass | State |
| 2023-11-22 | GULFPORT APPALACHIA, LLC - SHIMBLE PAD | BELLAIRE, Belmont, OH | Pass | State |
| 2023-11-22 | ASCENT RESOURCES - UTICA LLC - SIDWELL WHL BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2023-11-22 | ASCENT RESOURCES - UTICA LLC - SIDWELL WHL BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2023-11-22 | ASCENT RESOURCES - UTICA LLC - SIDWELL WHL BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2023-11-22 | GULFPORT APPALACHIA, LLC - MILLER WELL PAD | LONDONDERRY, TOWNSHIP OF, Guernsey, OH | Pass | State |
| 2023-11-22 | GULFPORT APPALACHIA, LLC - MILLER WELL PAD | LONDONDERRY, TOWNSHIP OF, Guernsey, OH | Pass | State |
| 2023-11-22 | GULFPORT APPALACHIA, LLC - MILLER WELL PAD | LONDONDERRY, TOWNSHIP OF, Guernsey, OH | Pass | State |
| 2023-11-22 | UNIVERSITY OF CINCINNATI | CINCINNATI, Hamilton, OH | Pass | State |
| 2023-11-22 | UNIVERSITY OF CINCINNATI | CINCINNATI, Hamilton, OH | Pass | State |
| 2023-11-22 | CARGILL, INCORPORATED - SALT DIVISION | AKRON, Summit, OH | Pass | State |
| 2023-11-22 | SUNNYSIDE COGENERATION | SUNNYSIDE, Carbon, UT | Pass | State |
| 2023-11-22 | SAINT-GOBAIN CERAMICS & PLASTICS, INC., BUCKHANNO — high-priority violation on file | BUCKHANNON, Upshur, WV | Pass | State |
| 2023-11-22 | COLONY PLANT (BENTONITE PERFORMANCE MINERALS) | COLONY, Crook, WY | Pass | State |
| 2023-11-21 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2023-11-21 | TARGA BADLANDS JUNCTION COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2023-11-21 | COLORMASTERS INC | ALBERTVILLE, Marshall, AL | Pass | State |
| 2023-11-21 | WESTERN FOODS DELTA REGION | PINE BLUFF, Jefferson, AR | Pass | State |
| 2023-11-21 | CMC STEEL FABRICATORS | MARICOPA COUNTY, Maricopa, AZ | Fail | Local |
| 2023-11-21 | METAL CONTAINER CORP | MIRA LOMA, Riverside, CA | Pass | Local |
| 2023-11-21 | AMRIZE PORTLAND PLANT — high-priority violation on file | FLORENCE 3.8 MI. E OF, Fremont, CO | Pass | State |
| 2023-11-21 | VERICO TECHNOLOGIES | ENFIELD, Hartford, CT | Fail | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | CHARLOTTE COUNTY DEPT OF PUBLIC WORKS | PUNTA GORDA, Charlotte, FL | Pass | State |
| 2023-11-21 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-21 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-21 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-21 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-21 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-21 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-21 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2023-11-21 | MID AMERICAN ENERGY CO-COUNCIL BLUFFS | COUNCIL BLUFFS, Pottawattamie, IA | Pass | State |
| 2023-11-21 | POET BIOREFINING - GOWRIE, LLC — high-priority violation on file | GOWRIE, Webster, IA | Pass | State |
| 2023-11-21 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2023-11-21 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2023-11-21 | ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file | NEWBURGH, Warrick, IN | Pass | State |
| 2023-11-21 | 3A COMPOSITES USA INC | BENTON, Marshall, KY | Pass | State |
| 2023-11-21 | TROSPER 2H #1 TANK BATTERY - GREENWOOD-WASKOM FIELD | GREENWOOD, Caddo, LA | Fail | State |
| 2023-11-21 | TROSPER 2H #1 TANK BATTERY - GREENWOOD-WASKOM FIELD | GREENWOOD, Caddo, LA | Fail | State |
| 2023-11-21 | TROSPER 2H #1 TANK BATTERY - GREENWOOD-WASKOM FIELD | GREENWOOD, Caddo, LA | Pass | State |
| 2023-11-21 | PLEASANT RIVER LUMBER ENFIELD, LLC | ENFIELD, Penobscot, ME | Pass | State |
| 2023-11-21 | CLEVELAND-CLIFFS STEEL CORPORATION DEARBORN WORKS | DEARBORN, Wayne, MI | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.