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 |
|---|---|---|---|---|
| 2023-09-18 | GORDITA & TOSTADA CTB | EUNICE, Lea, NM | Pass | State |
| 2023-09-18 | GERKEN MATERIALS-DAMASCUS TWP. PLANT 12 | DAMASCUS, TOWNSHIP OF, Henry, OH | Pass | State |
| 2023-09-18 | GM CEREALS PROPERTIES, INC. | CINCINNATI, Hamilton, OH | Pass | State |
| 2023-09-18 | GM CEREALS PROPERTIES, INC. | CINCINNATI, Hamilton, OH | Pass | State |
| 2023-09-18 | BCE MACH LLC / DON STEIN 12 26 11 1H AND PACKARD 13 2 | CHEROKEE, Alfalfa, OK | Pass | State |
| 2023-09-18 | BCE MACH LLC / DON STEIN 12 26 11 1H AND PACKARD 13 2 | CHEROKEE, Alfalfa, OK | Pass | State |
| 2023-09-18 | BCE MACH LLC / ROUSH 10 25 12 1H STATION | CARMEN, Alfalfa, OK | Pass | State |
| 2023-09-18 | BCE MACH LLC / CBT 8 27 12 STATION | BURLINGTON, Alfalfa, OK | Pass | State |
| 2023-09-18 | BCE MACH LLC / CBT 8 27 12 STATION | BURLINGTON, Alfalfa, OK | Pass | State |
| 2023-09-18 | XTO ENERGY INC / COOK CDP | ARDMORE, Carter, OK | Pass | State |
| 2023-09-18 | XTO ENERGY INC / COOK CDP | ARDMORE, Carter, OK | Pass | State |
| 2023-09-18 | BCE MACH III LLC / LSEOU 92 3HO LSEOU 93 6HO LSEOU 93 8HO | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-09-18 | EXPAND OPERATING LLC/INNES PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2023-09-18 | NORTHWEST PIPELINE CORP SUMAS | SUMAS, Whatcom, WA | Pass | Local |
| 2023-09-18 | PROCTER & GAMBLE PAPER PRODUCTS CO | GREEN BAY, Brown, WI | Pass | State |
| 2023-09-17 | HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU) | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2023-09-17 | CONNECTICUT JET POWER - COS COB STATION | GREENWICH, Fairfield, CT | Pass | State |
| 2023-09-17 | VENTURE GLOBAL CALCASIEU PASS LLC - CALCASIEU PASS LNG PROJECT | CAMERON, Cameron, LA | Pass | State |
| 2023-09-16 | STANISLAUS FOOD PRODUCTS CO — high-priority violation on file | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-16 | STANISLAUS FOOD PRODUCTS CO — high-priority violation on file | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-16 | STANISLAUS FOOD PRODUCTS CO — high-priority violation on file | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-16 | TRI STATE GENERATION & TRANS - CRAIG | CRAIG 2.9 MI. SW OF, Moffat, CO | N/A | State |
| 2023-09-16 | CONNECTICUT JET POWER - COS COB STATION | GREENWICH, Fairfield, CT | Pass | State |
| 2023-09-16 | CONNECTICUT JET POWER - COS COB STATION | GREENWICH, Fairfield, CT | Pass | State |
| 2023-09-16 | YAMAHA MOTOR MANUFACTURING CORPORATION | NEWNAN, Coweta, GA | Pass | State |
| 2023-09-16 | VENTURE GLOBAL CALCASIEU PASS LLC - CALCASIEU PASS LNG PROJECT | CAMERON, Cameron, LA | Pass | State |
| 2023-09-16 | SANTEE COOPER WINYAH GENERATING STATION | GEORGETOWN, Georgetown, SC | Pass | State |
| 2023-09-15 | DESOTO GATHERING COMPANY, LLC - PHILLIPS MOUNTAIN CPF-1 | CLEVELAND, Conway, AR | Pass | State |
| 2023-09-15 | DESOTO GATHERING COMPANY, LLC - PHILLIPS MOUNTAIN CPF-2 | CLEVELAND, Conway, AR | Pass | State |
| 2023-09-15 | SO CAL GAS CO | VALENCIA, Los Angeles, CA | Pass | Local |
| 2023-09-15 | SO CAL GAS CO | VALENCIA, Los Angeles, CA | Pass | Local |
| 2023-09-15 | SO CAL GAS CO | VALENCIA, Los Angeles, CA | Pass | Local |
| 2023-09-15 | DCP OPERATING CO - CROSSROADS FACILITY | KERSEY 5.0 MI. N OF, Weld, CO | N/A | State |
| 2023-09-15 | DCP OPERATING CO - CROSSROADS FACILITY | KERSEY 5.0 MI. N OF, Weld, CO | Pass | State |
| 2023-09-15 | PDC ENERGY - EVANS 7-26 PAD | EVANS, Weld, CO | Fail | State |
| 2023-09-15 | ALOHA-PETROLEUM - KAHULUI | KAHULUI, Maui, HI | Pass | State |
| 2023-09-15 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-15 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-15 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-15 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-15 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-15 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-15 | E & B PAVING LLC | ANGOLA, Steuben, IN | Pass | State |
| 2023-09-15 | E & B PAVING LLC | ANGOLA, Steuben, IN | Pass | State |
| 2023-09-15 | E & B PAVING LLC | ANGOLA, Steuben, IN | Pass | State |
| 2023-09-15 | E & B PAVING LLC | ANGOLA, Steuben, IN | Pass | State |
| 2023-09-15 | VENTURE GLOBAL CALCASIEU PASS LLC - CALCASIEU PASS LNG PROJECT | CAMERON, Cameron, LA | Pass | State |
| 2023-09-15 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2023-09-15 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2023-09-15 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2023-09-15 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2023-09-15 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2023-09-15 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2023-09-15 | DOMTAR PAPER COMPANY, LLC | PLYMOUTH, Martin, NC | Pass | State |
| 2023-09-15 | CARGILL INC — high-priority violation on file | BLAIR, Washington, NE | N/A | State |
| 2023-09-15 | CARGILL INC — high-priority violation on file | BLAIR, Washington, NE | N/A | State |
| 2023-09-15 | DOVE LGL STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-15 | UNIVERSITY OF NEW MEXICO-MAIN CAMPUS | ALBUQUERQUE, Bernalillo, NM | Pass | Local |
| 2023-09-15 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Incomplete | State |
| 2023-09-15 | NORLITE LLC | COHOES, Albany, NY | Pass | State |
| 2023-09-15 | APAC CENTRAL INC / WEST 21ST STREET ASPHALT | SAND SPRINGS, Tulsa, OK | Pass | State |
| 2023-09-15 | MARKWEST LIBERTY MID & RES / HOSKINS BOOSTER COMP STA | CLAYSVILLE, Washington, PA | Pass | State |
| 2023-09-15 | REGENCY MARCELLUS GAS GATHERING LLC/QUAKER STATE RD COMP STA | MONTOURSVILLE, Lycoming, PA | Pass | State |
| 2023-09-15 | USS/CLAIRTON WORKS — high-priority violation on file | CLAIRTON, Allegheny, PA | Pass | Local |
| 2023-09-15 | MANCHESTER STREET, LLC | PROVIDENCE, Providence, RI | Pass | State |
| 2023-09-15 | DOMINION ENERGY - BRUNSWICK | FREEMAN, Brunswick, VA | Pass | State |
| 2023-09-15 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2023-09-15 | QUAD/GRAPHICS, INC., HEDGESVILLE | MARTINSBURG, Berkeley, WV | Pass | State |
| 2023-09-14 | DESOTO GATHERING COMPANY, LLC - CHARLEY CPF-4 | HEBER SPRINGS, Cleburne, AR | Pass | State |
| 2023-09-14 | ENTERGY ARKANSAS, LLC - INDEPENDENCE PLANT | NEWARK, Independence, AR | Pass | State |
| 2023-09-14 | ENTERGY ARKANSAS, LLC - INDEPENDENCE PLANT | NEWARK, Independence, AR | Pass | State |
| 2023-09-14 | BIG RIVER STEEL LLC | OSCEOLA, Mississippi, AR | Pass | State |
| 2023-09-14 | BIG RIVER STEEL LLC | OSCEOLA, Mississippi, AR | Pass | State |
| 2023-09-14 | DRAKE CEMENT- DRAKE ROAD SITE — high-priority violation on file | PAULDEN, Yavapai, AZ | Pass | State |
| 2023-09-14 | CEMEX LLC - BLACK MT. QUARRY | APPLE VALLEY, San Bernardino, CA | Pass | Local |
| 2023-09-14 | AES ALAMITOS STATION, LLC | LONG BEACH, Los Angeles, CA | Pass | Local |
| 2023-09-14 | SHULTZ STEEL CO | SOUTH GATE, Los Angeles, CA | Pass | Local |
| 2023-09-14 | CALPEAK POWER BORDER LLC | SAN DIEGO, San Diego, CA | Pending | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-14 | LAND O' LAKES, INC — high-priority violation on file | TULARE, Tulare, CA | Pass | Local |
| 2023-09-14 | LAND O' LAKES, INC — high-priority violation on file | TULARE, Tulare, CA | Pass | Local |
| 2023-09-14 | LAND O' LAKES, INC — high-priority violation on file | TULARE, Tulare, CA | Pass | Local |
| 2023-09-14 | LAND O' LAKES, INC — high-priority violation on file | TULARE, Tulare, CA | Pass | Local |
| 2023-09-14 | LAND O' LAKES, INC — high-priority violation on file | TULARE, Tulare, CA | Pass | Local |
| 2023-09-14 | ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS | NUNN 14.3 MI. N OF, Weld, CO | Pass | State |
| 2023-09-14 | BONANZA CREEK - STATE NORTH PLATTE T-36 | KERSEY 8.3 MI. E OF, Weld, CO | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.