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 |
|---|---|---|---|---|
| 2023-08-08 | EASTERN GAS TRANS & STORAGE INC/CENTRE COMP STA | PLEASANT GAP, Centre, PA | Pass | State |
| 2023-08-08 | MARKWEST LIBERTY MIDSTREAM/BRIGICH COMP STA | CANONSBURG, Washington, PA | Pass | State |
| 2023-08-08 | SANTEE COOPER CROSS GENERATING STATION — high-priority violation on file | PINEVILLE, Berkeley, SC | Pass | State |
| 2023-08-08 | ARAUCO NORTH AMERICA INC — high-priority violation on file | BENNETTSVILLE, Marlboro, SC | Pass | State |
| 2023-08-08 | OTTER TAIL POWER COMPANY | BIG STONE CITY, Grant, SD | Pass | State |
| 2023-08-08 | GRAYMONT WESTERN (CONTINENTAL LIME) | DELTA, Millard, UT | Pass | State |
| 2023-08-08 | ENVIVA SOUTHAMPTON | FRANKLIN, Southampton, VA | Fail | State |
| 2023-08-08 | MANITOWOC PUBLIC UTILITIES | MANITOWOC, Manitowoc, WI | Pass | State |
| 2023-08-08 | WISCONSIN PUBLIC SERVICE CORP-WEST MARIN | PESHTIGO, Marinette, WI | Pass | State |
| 2023-08-08 | MARKWEST LIBERTY MIDSTREAM & RESOURCES, L.L.C., SHERWOOD | WEST UNION, Doddridge, WV | Pass | State |
| 2023-08-08 | AMERICAN BITUMINOUS POWER PARTNERS, L. P., GRANT | GRANT TOWN, Marion, WV | Pass | State |
| 2023-08-08 | APPALACHIAN POWER COMPANY, JOHN AMOS PLANT | WINFIELD, Putnam, WV | Pass | State |
| 2023-08-08 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-07 | BLUE BUTTES COMPRESSOR STATION AND PUMP STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2023-08-07 | GOLDEN VALLEY ELECTRIC ASSOCIATION / HEALY POWER PLANT — high-priority violation on file | HEALY, Denali, AK | Fail | State |
| 2023-08-07 | DESOTO GATHERING COMPANY, LLC - YELLOWSTONE CPF 1 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2023-08-07 | DESOTO GATHERING COMPANY, LLC - YELLOWSTONE CPF 1 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2023-08-07 | ENABLE GAS TRANSMISSION, LLC - SEARCY COMPRESSOR STATION | LETONA, White, AR | Pass | State |
| 2023-08-07 | ENABLE GAS TRANSMISSION, LLC - SEARCY COMPRESSOR STATION | LETONA, White, AR | Pass | State |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-07 | PRAIRIE OPERATING - CALVARY FARMS NORTH | EATON AREA, Weld, CO | N/A | State |
| 2023-08-07 | PRAIRIE OPERATING CO - CALVARY FARMS S | EATON AREA, Weld, CO | Pass | State |
| 2023-08-07 | JEA | JACKSONVILLE, Duval, FL | Pass | State |
| 2023-08-07 | MAINE WOODS PELLET COMPANY, LLC | ATHENS, Somerset, ME | Pass | State |
| 2023-08-07 | ALLIANCE CODY SUBSTATION PLANT | ALLIANCE, Box Butte, NE | N/A | State |
| 2023-08-07 | WILDCAT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-08-07 | WILDCAT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-08-07 | WILDCAT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-08-07 | WILDCAT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-08-07 | JANIE CONNER FACILITY — high-priority violation on file | MALAGA, Eddy, NM | Pass | State |
| 2023-08-07 | TWISTED SISTER COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-08-07 | LIMESTONE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-08-07 | ROLLAND PAD 952787 | SARDIS, Monroe, OH | Pass | State |
| 2023-08-07 | ROLLAND PAD 952787 | SARDIS, Monroe, OH | Pass | State |
| 2023-08-07 | ROLLAND PAD 952787 | SARDIS, Monroe, OH | Pass | State |
| 2023-08-07 | YELLOW ROSE PAD 953034 | WOODSFIELD, Monroe, OH | Pass | State |
| 2023-08-07 | YELLOW ROSE PAD 953034 | WOODSFIELD, Monroe, OH | Pass | State |
| 2023-08-07 | YELLOW ROSE PAD 953034 | WOODSFIELD, Monroe, OH | Pass | State |
| 2023-08-07 | BCE MACH III LLC / EHU 216H | HENNESSEY, Kingfisher, OK | Pass | State |
| 2023-08-07 | BCE MACH III LLC / EHU 268 271HO PAD | HENNESSEY, Kingfisher, OK | Pass | State |
| 2023-08-07 | COTERRA ENERGY INC/MYERS R PAD 1 | HOP BOTTOM, Susquehanna, PA | Fail | State |
| 2023-08-07 | VULCAN CONSTRUCTION MATERIALS LLC PACOLET QUARRY | PACOLET, Spartanburg, SC | Pass | State |
| 2023-08-07 | FRANZ SEATTLE DIVISION - WELLER ST. | SEATTLE, King, WA | Pass | Local |
| 2023-08-07 | AHLSTROM NA SPECIALTY SOLUTIONS LLC — high-priority violation on file | KAUKAUNA, Ozaukee, WI | Pass | State |
| 2023-08-07 | QUAD/GRAPHICS INC | SUSSEX, Waupaca, WI | Pass | State |
| 2023-08-07 | GRANGER SODA ASH FACILITY (WE SODA WYOMING LP) | GRANGER, Sweetwater, WY | Pass | State |
| 2023-08-07 | GRANGER SODA ASH FACILITY (WE SODA WYOMING LP) | GRANGER, Sweetwater, WY | Pass | State |
| 2023-08-07 | ROCK SPRINGS FERTILIZER COMPLEX (SIMPLOT PHOSPHATES) | ROCK SPRINGS, Sweetwater, WY | Pass | State |
| 2023-08-05 | GOLDEN VALLEY ELECTRIC ASSOCIATION / HEALY POWER PLANT — high-priority violation on file | HEALY, Denali, AK | Pass | State |
| 2023-08-05 | GERKEN MATERIALS INC PLANT #10 | CASTALIA, Erie, OH | Pass | State |
| 2023-08-05 | A M WILLIAMS STATION | GOOSE CREEK, Berkeley, SC | Pass | State |
| 2023-08-04 | MARTIN MARIETTA MATERIALS, INC. - HATTON QUARRY | COVE, Polk, AR | Pass | State |
| 2023-08-04 | MARTIN MARIETTA MATERIALS, INC. - HATTON QUARRY | COVE, Polk, AR | Pass | State |
| 2023-08-04 | MARTIN MARIETTA MATERIALS, INC. - HATTON QUARRY | COVE, Polk, AR | Pass | State |
| 2023-08-04 | APS WEST PHX POWER PLANT | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | SYCAMORE COGEN CO — high-priority violation on file | OILDALE, Kern, CA | Pass | Local |
| 2023-08-04 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Fail | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.