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 |
|---|---|---|---|---|
| 2023-09-11 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-11 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-11 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-11 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-11 | CHARLIE CREEK COMPRESSOR STATION | LAMBERT, Richland, MT | Pass | State |
| 2023-09-11 | CHARLIE CREEK COMPRESSOR STATION | LAMBERT, Richland, MT | Pass | State |
| 2023-09-11 | ASH GROVE CEMENT CO — high-priority violation on file | LOUISVILLE, Cass, NE | N/A | State |
| 2023-09-11 | ASH GROVE CEMENT CO — high-priority violation on file | LOUISVILLE, Cass, NE | N/A | State |
| 2023-09-11 | WOLVERINE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-11 | WOLVERINE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-11 | LEO THORSNESS FACILITY | JAL, Lea, NM | Pass | State |
| 2023-09-11 | FIREBIRD LGL STATION | JAL, Lea, NM | Pass | State |
| 2023-09-11 | MAR-ZANE PLANT #26 | COLUMBUS, Franklin, OH | Pass | State |
| 2023-09-11 | EOG RESOURCES, INC. - WILLIAM DENOON 17-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-09-11 | EOG RESOURCES, INC. - WILLIAM DENOON 17-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-09-11 | EOG RESOURCES, INC. - WILLIAM DENOON 17-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-09-11 | EOG RESOURCES, INC. - DENOON 5-10-3 PAD | RICHMOND, Jefferson, OH | Pass | State |
| 2023-09-11 | EOG RESOURCES, INC. - DENOON 5-10-3 PAD | RICHMOND, Jefferson, OH | Pass | State |
| 2023-09-11 | EOG RESOURCES, INC. - DENOON 5-10-3 PAD | RICHMOND, Jefferson, OH | Pass | State |
| 2023-09-11 | MARKWEST OKLAHOMA GAS CO LLC / WOMACK COMPRESSOR STATION | COALGATE, Coal, OK | Pass | State |
| 2023-09-11 | FW MIDCON I LLC / FERGUSON 1H 14X | LINDSAY, Garvin, OK | Pass | State |
| 2023-09-11 | VALIDUS ENERGY II MIDCON LLC / CLARK PAD | AMBER, Grady, OK | Pass | State |
| 2023-09-11 | BCE MACH III LLC / LNU 60 3HO | DOVER, Kingfisher, OK | Pass | State |
| 2023-09-11 | BCE MACH III LLC / LNU 87 2H | CRESCENT, Kingfisher, OK | Pass | State |
| 2023-09-11 | VALIDUS ENERGY II MIDCON LLC / COPELAND 6 36 1508MH 7 36 1508MH NANCY | OKARCHE, Kingfisher, OK | Pass | State |
| 2023-09-11 | MARKWEST OKLAHOMA GAS CO LLC / VERNER COMPRESSOR STATION | HAYWOOD, Pittsburg, OK | Pass | State |
| 2023-09-11 | SUSQUEHANNA GATHERING/NORTH RANGE CPF 1 COMP STA | SUSQUEHANNA, Susquehanna, PA | Fail | State |
| 2023-09-11 | GCC DACOTAH — high-priority violation on file | RAPID CITY, Pennington, SD | Pass | State |
| 2023-09-11 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2023-09-11 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | Pass | State |
| 2023-09-11 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | Pass | State |
| 2023-09-11 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | Pass | State |
| 2023-09-10 | SCHUYLKILL ENERGY RES/ST NICHOLAS COGEN — high-priority violation on file | SHENANDOAH, Schuylkill, PA | Pass | State |
| 2023-09-09 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2023-09-09 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2023-09-08 | BRECHAN CONSTRUCTION / AESCO MADSEN DM7228 DRUM MIX ASPHALT PL | KODIAK, Kodiak Island, AK | Pass | State |
| 2023-09-08 | BRECHAN CONSTRUCTION / AESCO MADSEN DM7228 DRUM MIX ASPHALT PL | KODIAK, Kodiak Island, AK | Pass | State |
| 2023-09-08 | WEST FRASER HUGULEY | HUGULEY, Chambers, AL | Pass | State |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-08 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-08 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-08 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-08 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-08 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-08 | QUIKRETE CONSTRUCTION MATERIALS, LLC | NEWBERRY, Alachua, FL | Pass | State |
| 2023-09-08 | QUIKRETE CONSTRUCTION MATERIALS, LLC | NEWBERRY, Alachua, FL | Pass | State |
| 2023-09-08 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2023-09-08 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2023-09-08 | HELCO - OULI | SOUTH KOHALA, Hawaii, HI | Pass | State |
| 2023-09-08 | POET BIOREFINING IOWA FALLS, LLC — high-priority violation on file | IOWA FALLS, Hardin, IA | Pass | State |
| 2023-09-08 | POET BIOREFINING IOWA FALLS, LLC — high-priority violation on file | IOWA FALLS, Hardin, IA | Pass | State |
| 2023-09-08 | POET BIOREFINING IOWA FALLS, LLC — high-priority violation on file | IOWA FALLS, Hardin, IA | Pass | State |
| 2023-09-08 | POET BIOREFINING IOWA FALLS, LLC — high-priority violation on file | IOWA FALLS, Hardin, IA | Pass | State |
| 2023-09-08 | J R SIMPLOT - CALDWELL (NEW) | CALDWELL, Canyon, ID | Pass | State |
| 2023-09-08 | DAVE OMARA CONTRACTOR INCORPORATED PLANT NO 7 | SAINT PAUL, Decatur, IN | Pass | State |
| 2023-09-08 | DAVE OMARA CONTRACTOR INCORPORATED PLANT NO 7 | SAINT PAUL, Decatur, IN | Pass | State |
| 2023-09-08 | DAVE OMARA CONTRACTOR INCORPORATED PLANT NO 7 | SAINT PAUL, Decatur, IN | Pass | State |
| 2023-09-08 | DAVE OMARA CONTRACTOR INCORPORATED PLANT NO 7 | SAINT PAUL, Decatur, IN | Pass | State |
| 2023-09-08 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2023-09-08 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-08 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-08 | FSC II, LLC - GARNER ASPHALT PLANT | RALEIGH, Wake, NC | Pass | State |
| 2023-09-08 | NUCOR STEEL | NORFOLK, Madison, NE | N/A | State |
| 2023-09-08 | TURNKEY RECYCLING & ENVIRONMENTAL ENTERPRISES | ROCHESTER, Strafford, NH | Pass | State |
| 2023-09-08 | TURNKEY RECYCLING & ENVIRONMENTAL ENTERPRISES | ROCHESTER, Strafford, NH | Pass | State |
| 2023-09-08 | GERKEN MATERIALS, INC. PLANT 8 | PAULDING, Paulding, OH | Pass | State |
| 2023-09-08 | WALLEYE POWER, LLC, BAY SHORE PLANT | OREGON, Lucas, OH | Pass | State |
| 2023-09-08 | NLS ASPHALT, INC. - PLANT #3 | CADIZ, Harrison, OH | Pass | State |
| 2023-09-08 | EOG RESOURCES, INC. - STOCKER HN MON PAD | BOWERSTON, Harrison, OH | Pass | State |
| 2023-09-08 | TRIAD HUNTER LLC - FORNI PAD | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2023-09-08 | TRIAD HUNTER LLC - FORNI PAD | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2023-09-08 | TRIAD HUNTER LLC - FORNI PAD | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2023-09-08 | DIVERSIFIED PRODUCTION LLC - POOL UNIT | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2023-09-08 | DIVERSIFIED PRODUCTION LLC - POOL UNIT | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2023-09-08 | DIVERSIFIED PRODUCTION LLC - POOL UNIT | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2023-09-08 | BCE MACH II LLC / ELEC 1 34H STATION | SWEETWATER, Beckham, OK | Pass | State |
| 2023-09-08 | IRON HORSE MIDSTREAM LLC / TERRITORY COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2023-09-08 | BCE MACH III LLC / LNU 13 3H | CRESCENT, Kingfisher, OK | Pass | State |
| 2023-09-08 | BCE MACH III LLC / LNU 15 4H | CRESCENT, Kingfisher, OK | Pass | State |
| 2023-09-08 | DCP OPERATING CO LP / CROSSROADS COMPRESSOR STATION | MARLOW, Stephens, OK | Pass | State |
| 2023-09-08 | COLUMBIA GAS TRANS CORP/DONEGAL COMP STA | WEST ALEXANDER, Washington, PA | Pass | State |
| 2023-09-08 | NFG MIDSTREAM COVINGTON LLC/DCNR TRACT 595 | ARNOT, Tioga, PA | Pass | State |
| 2023-09-08 | CHESAPEAKE APPALACHIA LLC/GREGERSON SUS PAD | LACEYVILLE, Susquehanna, PA | Pass | State |
| 2023-09-08 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2023-09-08 | DAVE JOHNSTON (PACIFICORP) | GLENROCK, Converse, WY | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.