EPA Air · stack tests by year
Air-emissions stack tests in 2025
- 26,291Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2025
- California 5,390
- Ohio 2,213
- New Mexico 1,801
- Indiana 1,619
- Florida 1,419
- Wyoming 1,362
- Georgia 1,233
- Oklahoma 1,229
- Pennsylvania 951
- Missouri 768
- Alabama 693
- Mississippi 688
- Arkansas 619
- Iowa 500
- Colorado 405
- Michigan 387
- Texas 308
- North Carolina 275
- Illinois 264
- Washington 251
- Wisconsin 245
- Minnesota 238
- West Virginia 224
- Delaware 212
- South Carolina 210
- Kentucky 204
- Kansas 202
- Connecticut 178
- Utah 175
- Montana 174
- Virginia 170
- Tennessee 168
- Alaska 152
- Nebraska 145
- North Dakota 143
- Maine 131
- New York 124
- Louisiana 117
- Arizona 116
- Idaho 111
- Nevada 73
- New Hampshire 59
- Massachusetts 59
- Oregon 56
- Hawaii 53
- Maryland 51
- South Dakota 46
- Rhode Island 30
- District of Columbia 28
- Puerto Rico 14
- Vermont 4
- New Jersey 4
Other years
Air-emissions stack tests recorded in 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-09 | KRAFT HEINZ FOODS COMPANY | JACKSONVILLE, Duval, FL | Pass | State |
| 2025-12-09 | ENVIROFOCUS TECHNOLOGIES DBA GOPHER RESO — high-priority violation on file | TAMPA, Hillsborough, FL | Pass | State |
| 2025-12-09 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2025-12-09 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2025-12-09 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2025-12-09 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2025-12-09 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2025-12-09 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2025-12-09 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2025-12-09 | CERTAINTEED GYPSUM PALATKA, LLC | PALATKA, Putnam, FL | Pass | State |
| 2025-12-09 | ATHENS-CLARKE COUNTY MSW LANDFILL | WINTERVILLE, Clarke, GA | Pass | State |
| 2025-12-09 | ATHENS-CLARKE COUNTY MSW LANDFILL | WINTERVILLE, Clarke, GA | Pass | State |
| 2025-12-09 | ATHENS-CLARKE COUNTY MSW LANDFILL | WINTERVILLE, Clarke, GA | Pass | State |
| 2025-12-09 | CII METHANE MANAGEMENT III LANDFILL GAS TO ENERGY PROJECT | ATHENS, Clarke, GA | Pass | State |
| 2025-12-09 | CII METHANE MANAGEMENT III LANDFILL GAS TO ENERGY PROJECT | ATHENS, Clarke, GA | Pass | State |
| 2025-12-09 | CII METHANE MANAGEMENT III LANDFILL GAS TO ENERGY PROJECT | ATHENS, Clarke, GA | Pass | State |
| 2025-12-09 | TALBOT ENERGY FACILITY | BOX SPRINGS, Talbot, GA | Pass | State |
| 2025-12-09 | TALBOT ENERGY FACILITY | BOX SPRINGS, Talbot, GA | Pass | State |
| 2025-12-09 | TALBOT ENERGY FACILITY | BOX SPRINGS, Talbot, GA | Pass | State |
| 2025-12-09 | TALBOT ENERGY FACILITY | BOX SPRINGS, Talbot, GA | Pass | State |
| 2025-12-09 | TALBOT ENERGY FACILITY | BOX SPRINGS, Talbot, GA | Pass | State |
| 2025-12-09 | TALBOT ENERGY FACILITY | BOX SPRINGS, Talbot, GA | Pass | State |
| 2025-12-09 | TALBOT ENERGY FACILITY | BOX SPRINGS, Talbot, GA | Pass | State |
| 2025-12-09 | TALBOT ENERGY FACILITY | BOX SPRINGS, Talbot, GA | Pass | State |
| 2025-12-09 | ACTIVE MINERALS INTERNATIONAL - MAIN PLANT | GORDON, Wilkinson, GA | Pass | State |
| 2025-12-09 | CARGILL INC-IOWA FALLS | IOWA FALLS, Hardin, IA | Pass | State |
| 2025-12-09 | MICRON TECHNOLOGY INC BOISE | BOISE, Ada, ID | Pass | State |
| 2025-12-09 | WEST POINT RNG LLC | WENDELL, Gooding, ID | Pass | State |
| 2025-12-09 | GRAIN CRAFT CORN LLC — high-priority violation on file | DANVILLE, Vermilion, IL | Fail | State |
| 2025-12-09 | GRAIN CRAFT CORN LLC — high-priority violation on file | DANVILLE, Vermilion, IL | Fail | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2025-12-09 | EVONIK CORP - HAYSVILLE (AIR) | HAYSVILLE, Sedgwick, KS | Pass | State |
| 2025-12-09 | HARSHMAN CONST (MASTER EQUIP LIST) (AIR) | CEDAR POINT, Marion, KS | Pass | State |
| 2025-12-09 | HARSHMAN CONST (MASTER EQUIP LIST) (AIR) | CEDAR POINT, Marion, KS | Pass | State |
| 2025-12-09 | DOW SILICONES CORP | CARROLLTON, Carroll, KY | Fail | State |
| 2025-12-09 | DART CONTAINER CORP OF KY | HORSE CAVE, Hart, KY | Pass | State |
| 2025-12-09 | DART CONTAINER CORP OF KY | HORSE CAVE, Hart, KY | Pass | State |
| 2025-12-09 | CF INDUSTRIES NITROGEN LLC - DONALDSONVILLE NITROGEN COMPLEX | DONALDSONVILLE, Ascension, LA | Pass | State |
| 2025-12-09 | CITY OF AUGUSTA - HATCH HILL LANDFILL | AUGUSTA, Kennebec, ME | Pass | State |
| 2025-12-09 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-12-09 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-12-09 | ANR PIPELINE COMPANY LINCOLN COMPRESSOR STATION | LAKE GEORGE, Clare, MI | Pass | State |
| 2025-12-09 | FLINT HILLS RESOURCES PINE BEND REFINERY | ROSEMOUNT, Dakota, MN | Pass | State |
| 2025-12-09 | SILGAN CONTAINERS MFG CORP | SAVAGE, Scott, MN | Pass | State |
| 2025-12-09 | PRECOAT METALS | WASHINGTON, Franklin, MO | Pending | State |
| 2025-12-09 | PRECOAT METALS | WASHINGTON, Franklin, MO | Pending | State |
| 2025-12-09 | NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, JOHN C STENNIS SPACE CENTER | STENNIS SPAC, Hancock, MS | Pass | State |
| 2025-12-09 | NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, JOHN C STENNIS SPACE CENTER | STENNIS SPAC, Hancock, MS | Pass | State |
| 2025-12-09 | AMAZON DATA SERVICES INC, MADISON MEGA SITE — high-priority violation on file | CANTON, Madison, MS | Pass | State |
| 2025-12-09 | AMAZON DATA SERVICES INC, MADISON MEGA SITE — high-priority violation on file | CANTON, Madison, MS | Pass | State |
| 2025-12-09 | AMAZON DATA SERVICES INC, MADISON MEGA SITE — high-priority violation on file | CANTON, Madison, MS | Pass | State |
| 2025-12-09 | AMAZON DATA SERVICES INC, MADISON MEGA SITE — high-priority violation on file | CANTON, Madison, MS | Pass | State |
| 2025-12-09 | IREDELL TRANSMISSION, LLC | STATESVILLE, Iredell, NC | Pass | State |
| 2025-12-09 | BITTER LAKE COMPRESSOR STATION | ROSWELL, Chaves, NM | Pass | State |
| 2025-12-09 | BITTER LAKE COMPRESSOR STATION | ROSWELL, Chaves, NM | Pass | State |
| 2025-12-09 | WILDCAT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2025-12-09 | WILDCAT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2025-12-09 | WELCOME TO GOLDEN | MALAGA, Eddy, NM | Pass | State |
| 2025-12-09 | WELCOME TO GOLDEN | MALAGA, Eddy, NM | Pass | State |
| 2025-12-09 | DEEP FLAT BOOSTER STATION | AVALON, Eddy, NM | Pass | State |
| 2025-12-09 | IRVIN WALL STATE COM NO131H | JAL, Lea, NM | Pass | State |
| 2025-12-09 | KRAKEN COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2025-12-09 | HOGNOSE VIPER 23 CTB 1 | EUNICE, Lea, NM | Pass | State |
| 2025-12-09 | JOHNS MANVILLE | DEFIANCE, Defiance, OH | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - FALDOWSKI SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - FALDOWSKI SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - FALDOWSKI SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - LORI SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - LORI SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - LORI SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2025-12-09 | P AND K STONE LLC / COLEMAN QUARRY | COLEMAN, Atoka, OK | Pass | State |
| 2025-12-09 | CUMMINGS LUMBER CO INC/TROY TWP PLT | TROY, Bradford, PA | Pass | State |
| 2025-12-09 | CALPINE MID MERIT II LLC/ YORK ENERGY CENTER BLOCK 2 — high-priority violation on file | DELTA, York, PA | Pass | State |
| 2025-12-09 | EQM GATHERING OPCO LLC/PIPERS RIDGE INTERCONNECT | WAYNESBURG, Greene, PA | Pass | State |
| 2025-12-09 | PA GEN ENERGY CO LLC/TRACT 729 COMPRESSOR STATION | WATERVILLE, Lycoming, PA | Pass | State |
| 2025-12-09 | RIDGEVILLE WOOD RECYCLING COMPOST FACILITY — high-priority violation on file | RIDGEVILLE, Dorchester, SC | Pass | State |
| 2025-12-09 | BASF METALS LLC | SENECA, Oconee, SC | Pass | State |
| 2025-12-09 | TENNESSEE GAS PIPELINE COMPANY, L.L.C. | MIDDLETON, Hardeman, TN | Pass | State |
| 2025-12-09 | COLOSSUS DATA CENTER | MEMPHIS, Shelby, TN | Pass | Local |
| 2025-12-09 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2025-12-09 | GLOBAL FORT WORTH TERMINAL | FORT WORTH, Tarrant, TX | N/A | State |
| 2025-12-09 | PACIFICORP HUNTER | UTAH, Undetermined, UT | Pass | State |
| 2025-12-09 | PACIFICORP HUNTER | UTAH, Undetermined, UT | Pass | State |
| 2025-12-09 | HRSD - BOAT HARBOR WASTEWATER TREATMENT PLANT | NEWPORT NEWS, Newport News (city), VA | Pass | State |
| 2025-12-09 | WALMART SUPERCENTER #4064 | VIRGINIA BEACH, Virginia Beach (city), VA | Fail | State |
| 2025-12-09 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2025-12-09 | HARDEL MUTUAL PLYWOOD CORPORATION — high-priority violation on file | CHEHALIS, Lewis, WA | Pass | Local |
| 2025-12-09 | GREEN MEADOWS RNG, LLC | CHILTON, Calumet, WI | Pass | State |
| 2025-12-09 | CASCADES TISSUE GROUP - WI INC | EAU CLAIRE, Eau Claire, WI | Pass | State |
| 2025-12-09 | MCKINLEY PAPER AND PACKAGING COMPANY — high-priority violation on file | COMBINED LOCKS, Ozaukee, WI | Pass | State |
| 2025-12-09 | MONONGAHELA POWER COMPANY, HARRISON STATION | HAYWOOD, Harrison, WV | Pass | State |
| 2025-12-09 | FONTENELLE STATION (MOUNTAIN GAS RESOURCES LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2025-12-09 | FONTENELLE STATION (MOUNTAIN GAS RESOURCES LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.