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 |
|---|---|---|---|---|
| 2021-10-05 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-05 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-05 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-05 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-05 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-05 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2021-10-05 | NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC MICHIGAN CITY GE — high-priority violation on file | MICHIGAN CITY, LaPorte, IN | Pass | State |
| 2021-10-05 | NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC MICHIGAN CITY GE — high-priority violation on file | MICHIGAN CITY, LaPorte, IN | Pass | State |
| 2021-10-05 | NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC MICHIGAN CITY GE — high-priority violation on file | MICHIGAN CITY, LaPorte, IN | Pass | State |
| 2021-10-05 | NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC MICHIGAN CITY GE — high-priority violation on file | MICHIGAN CITY, LaPorte, IN | Pass | State |
| 2021-10-05 | NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC MICHIGAN CITY GE — high-priority violation on file | MICHIGAN CITY, LaPorte, IN | Pass | State |
| 2021-10-05 | NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC MICHIGAN CITY GE — high-priority violation on file | MICHIGAN CITY, LaPorte, IN | Pass | State |
| 2021-10-05 | POWDER PROCESSING TECHNOLOGY LLC — high-priority violation on file | VALPARAISO, Porter, IN | Pass | State |
| 2021-10-05 | THE FORD METER BOX COMPANY INC | WABASH, Wabash, IN | Pass | State |
| 2021-10-05 | THE FORD METER BOX COMPANY INC | WABASH, Wabash, IN | Pass | State |
| 2021-10-05 | THE FORD METER BOX COMPANY INC | WABASH, Wabash, IN | Pass | State |
| 2021-10-05 | THE FORD METER BOX COMPANY INC | WABASH, Wabash, IN | Pass | State |
| 2021-10-05 | THE FORD METER BOX COMPANY INC | WABASH, Wabash, IN | Pass | State |
| 2021-10-05 | LIBERTY LANDFILL LLC | MONTICELLO, White, IN | Pass | State |
| 2021-10-05 | LIBERTY LANDFILL LLC | MONTICELLO, White, IN | Fail | State |
| 2021-10-05 | KOCH FERTILIZER DODGE CITY (AIR) | DODGE CITY, Ford, KS | Pass | State |
| 2021-10-05 | MID-AMERICA PIPELINE - MCLOUTH PUMP STATION | MCLOUTH STATION, Jefferson, KS | Pass | State |
| 2021-10-05 | CENTURY ALUMINUM OF KY LLC | HAWESVILLE, Hancock, KY | Pass | State |
| 2021-10-05 | CENTURY ALUMINUM OF KY LLC | HAWESVILLE, Hancock, KY | Pass | State |
| 2021-10-05 | CENTURY ALUMINUM SEBREE LLC | ROBARDS, Henderson, KY | Pass | State |
| 2021-10-05 | LOGAN ALUMINUM INC | RUSSELLVILLE, Logan, KY | Pending | State |
| 2021-10-05 | EMERY LEE AND SONS INCORPORATED | EAST MILLINOCKET, Penobscot, ME | Pass | State |
| 2021-10-05 | EMERY LEE AND SONS INCORPORATED | EAST MILLINOCKET, Penobscot, ME | Pass | State |
| 2021-10-05 | GUARDIAN INDUSTRIES-CARLETON | CARLETON, Monroe, MI | Pass | State |
| 2021-10-05 | TES FILER CITY STATION | FILER CITY, Manistee, MI | Pending | State |
| 2021-10-05 | SAPPI CLOQUET LLC | CLOQUET, Carlton, MN | Pass | State |
| 2021-10-05 | AG PROCESSING INC - DAWSON | DAWSON, Lac qui Parle, MN | Pass | State |
| 2021-10-05 | WORTHINGTON DIESEL GENERATING PLANT | WORTHINGTON, Nobles, MN | Pass | State |
| 2021-10-05 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 2 | SPRINGFIELD, Greene, MO | Pending | State |
| 2021-10-05 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 2 | SPRINGFIELD, Greene, MO | Pending | State |
| 2021-10-05 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 2 | SPRINGFIELD, Greene, MO | Pending | State |
| 2021-10-05 | GULF SOUTH PIPELINE COMPANY LLC, PETAL COMPRESSOR STATION | PETAL, Forrest, MS | Pass | State |
| 2021-10-05 | GULF SOUTH PIPELINE COMPANY LLC, PETAL COMPRESSOR STATION | PETAL, Forrest, MS | Pass | State |
| 2021-10-05 | GULF SOUTH PIPELINE COMPANY LLC, PETAL COMPRESSOR STATION | PETAL, Forrest, MS | Pass | State |
| 2021-10-05 | GULF SOUTH PIPELINE COMPANY LLC, PETAL COMPRESSOR STATION | PETAL, Forrest, MS | Pass | State |
| 2021-10-05 | GULF SOUTH PIPELINE COMPANY LLC, PETAL COMPRESSOR STATION | PETAL, Forrest, MS | Pass | State |
| 2021-10-05 | GULF SOUTH PIPELINE COMPANY LLC, PETAL COMPRESSOR STATION | PETAL, Forrest, MS | Pass | State |
| 2021-10-05 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2021-10-05 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2021-10-05 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2021-10-05 | USG INTERIORS LLC | GREENVILLE, Washington, MS | Pass | State |
| 2021-10-05 | N. BORDER PIPELINE CO STA. 3 | CULBERTSON, Roosevelt, MT | Pass | State |
| 2021-10-05 | LAMPE & MALPHRUS LUMBER COMPANY | SMITHFIELD, Johnston, NC | Pass | State |
| 2021-10-05 | PRESTAGE FARMS - MOLTONVILLE | CLINTON, Sampson, NC | Pending | State |
| 2021-10-05 | PRESTAGE AGENERGY - MOLTONVILLE | CLINTON, Sampson, NC | Pass | State |
| 2021-10-05 | INGREDION, INC. — high-priority violation on file | WINSTON-SALEM, Forsyth, NC | Pass | Local |
| 2021-10-05 | INGREDION, INC. — high-priority violation on file | WINSTON-SALEM, Forsyth, NC | Pass | Local |
| 2021-10-05 | DAKOTA SPIRIT AGENERGY, LLC - DAKOTA SPIRIT AGENERGY | SPIRITWOOD, Stutsman, ND | Pass | State |
| 2021-10-05 | BENNETVILLE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-10-05 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2021-10-05 | SCIOTO MATERIALS LLC ST. LOUISVILLE | SAINT LOUISVILLE, Licking, OH | Pass | State |
| 2021-10-05 | SCIOTO MATERIALS LLC ST. LOUISVILLE | SAINT LOUISVILLE, Licking, OH | Fail | State |
| 2021-10-05 | SCIOTO MATERIALS LLC ST. LOUISVILLE | SAINT LOUISVILLE, Licking, OH | Pass | State |
| 2021-10-05 | SOFIDEL AMERICA — high-priority violation on file | CIRCLEVILLE, Pickaway, OH | Pass | State |
| 2021-10-05 | SOFIDEL AMERICA — high-priority violation on file | CIRCLEVILLE, Pickaway, OH | Pass | State |
| 2021-10-05 | CARMEUSE LIME, INC. - MAPLE GROVE OPERATIONS — high-priority violation on file | BETTSVILLE, Seneca, OH | Fail | State |
| 2021-10-05 | CARMEUSE LIME, INC. - MAPLE GROVE OPERATIONS — high-priority violation on file | BETTSVILLE, Seneca, OH | Fail | State |
| 2021-10-05 | GERKEN MATERIALS INC - PLANT 20A | PIONEER, Williams, OH | Pass | State |
| 2021-10-05 | ASCENT RESOURCES -UTICA LLC - KUNGLE A N YRK BL WELLPAD | POWHATAN POINT, Belmont, OH | Pass | State |
| 2021-10-05 | ASCENT RESOURCES -UTICA LLC - KUNGLE A N YRK BL WELLPAD | POWHATAN POINT, Belmont, OH | Pass | State |
| 2021-10-05 | ASCENT RESOURCES -UTICA LLC - KUNGLE A N YRK BL WELLPAD | POWHATAN POINT, Belmont, OH | Pass | State |
| 2021-10-05 | ASCENT RESOURCES -UTICA LLC - KUNGLE B N YRK BL WELLPAD | POWHATAN POINT, Belmont, OH | Pass | State |
| 2021-10-05 | ASCENT RESOURCES -UTICA LLC - KUNGLE B N YRK BL WELLPAD | POWHATAN POINT, Belmont, OH | Pass | State |
| 2021-10-05 | ASCENT RESOURCES -UTICA LLC - KUNGLE B N YRK BL WELLPAD | POWHATAN POINT, Belmont, OH | Pass | State |
| 2021-10-05 | ZIMMER POWER COMPANY LLC | MOSCOW, Clermont, OH | Pass | State |
| 2021-10-05 | ZIMMER POWER COMPANY LLC | MOSCOW, Clermont, OH | Pass | State |
| 2021-10-05 | ONEOK FIELD SERVICES CO LLC / WARD COMPRESSOR STATION NORTHERN ROWS | GEARY, Canadian, OK | Pass | State |
| 2021-10-05 | ONEOK FIELD SERVICES CO LLC / WARD COMPRESSOR STATION NORTHERN ROWS | GEARY, Canadian, OK | Pass | State |
| 2021-10-05 | TALL OAK WOODFORD LLC / PANTHER CREEK PROCESSING FACILITY | COALGATE, Coal, OK | Pass | State |
| 2021-10-05 | TALL OAK WOODFORD LLC / PANTHER CREEK PROCESSING FACILITY | COALGATE, Coal, OK | Pass | State |
| 2021-10-05 | ET GATHERING PROCESSING LLC / TABLER COMPRESSOR STATION | TABLER, Grady, OK | Pass | State |
| 2021-10-05 | ET GATHERING PROCESSING LLC / TABLER COMPRESSOR STATION | TABLER, Grady, OK | Pass | State |
| 2021-10-05 | ET GATHERING PROCESSING LLC / TABLER COMPRESSOR STATION | TABLER, Grady, OK | Pass | State |
| 2021-10-05 | ET GATHERING PROCESSING LLC / TABLER COMPRESSOR STATION | TABLER, Grady, OK | Pass | State |
| 2021-10-05 | CONTINENTAL RESOURCES / UMBACH 6 21 28 33XHW UMBACH 8 21 28 33 | ALEX, Grady, OK | Pass | State |
| 2021-10-05 | ET GATHERING PROCESSING LLC / CHEYENNE COMPRESSOR STATION | CHEYENNE, Roger Mills, OK | Pass | State |
| 2021-10-05 | ET GATHERING PROCESSING LLC / CHEYENNE COMPRESSOR STATION | CHEYENNE, Roger Mills, OK | Pass | State |
| 2021-10-05 | H&K GROUP INC/SANATOGA BLACKTOP — high-priority violation on file | POTTSTOWN, Montgomery, PA | Pass | State |
| 2021-10-05 | COLUMBIA GAS TRANS CORP/ELLWOOD CITY STA | ELLWOOD CITY, Beaver, PA | Pass | State |
| 2021-10-05 | WILLIAMS FIELD SVC CO LLC/CENTRAL COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2021-10-05 | MTN GATHERING LLC/FORWARD COMP STA | RENFREW, Butler, PA | Pass | State |
| 2021-10-05 | JKLM ENERGY LLC/REESE HOLLOW 117 WELL PAD | COUDERSPORT, Potter, PA | Pass | State |
| 2021-10-05 | JKLM ENERGY/SWEDEN VALLEY 105 WELL PAD | COUDERSPORT, Potter, PA | Pass | State |
| 2021-10-05 | BRIGHTSMITH LLC/FALLS TWP | MORRISVILLE, Bucks, PA | Fail | State |
| 2021-10-05 | JACK LINK'S BEEF JERKY | ALPENA, Jerauld, SD | Pass | State |
| 2021-10-05 | SIMCOE - SALVADOR I / II CENTRAL DELIVERY POINT | DURANGO, La Plata, CO | Pass | U.S. EPA |
| 2021-10-05 | SIMCOE - SALVADOR I / II CENTRAL DELIVERY POINT | DURANGO, La Plata, CO | Pass | U.S. EPA |
| 2021-10-05 | SIMCOE - SALVADOR I / II CENTRAL DELIVERY POINT | DURANGO, La Plata, CO | Pass | U.S. EPA |
| 2021-10-05 | BIG WEST OIL | NORTH SALT LAKE, Davis, UT | Pass | State |
| 2021-10-05 | NORTHWEST PIPELINE CORP SUMAS | SUMAS, Whatcom, WA | Pass | Local |
| 2021-10-05 | BP WEST COAST PRODUCTS LLC — high-priority violation on file | BLAINE, Whatcom, WA | Pass | Local |
| 2021-10-05 | WILLIAMS OHIO VALLEY MIDSTREAM LLC, CORLEY STATION | DALLAS, Marshall, WV | Pass | State |
| 2021-10-05 | WILLIAMS OHIO VALLEY MIDSTREAM LLC, OAK GROVE | MOUNDSVILLE, Marshall, WV | Pass | State |
| 2021-10-05 | LOVELL PLANT (AMERICAN COLLOID CO) | LOVELL, Big Horn, WY | Pending | State |
| 2021-10-05 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.