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 |
|---|---|---|---|---|
| 2023-09-20 | PETE LIEN & SONS, INC. MAIN PLANT | RAPID CITY, Pennington, SD | Pass | State |
| 2023-09-20 | TENNESSEE OPERATIONS OF EASTMAN CHEMICAL COMPANY — high-priority violation on file | KINGSPORT, Sullivan, TN | Pass | State |
| 2023-09-20 | AXALTA COATING SYSTEMS USA LLC | FRONT ROYAL, Warren, VA | Pass | State |
| 2023-09-20 | NORTHWEST PIPELINE CORP SUMAS | SUMAS, Whatcom, WA | Pass | Local |
| 2023-09-20 | WAUPACA FOUNDRY, INC.-PLANT 4 | MARINETTE, Marinette, WI | Pass | State |
| 2023-09-20 | WAUPACA FOUNDRY INC - PLANT 2 & 3 | WAUPACA, Waushara, WI | Pass | State |
| 2023-09-20 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-09-20 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-09-20 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-09-20 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-09-20 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-09-20 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-09-20 | LOST CABIN GAS PLANT (CONTANGO RESOURCES, LLC.) — high-priority violation on file | LOST CABIN, Fremont, WY | Pass | State |
| 2023-09-20 | CHEYENNE PLANT (DYNO NOBEL INC) — high-priority violation on file | CHEYENNE, Laramie, WY | Pass | State |
| 2023-09-20 | CHEYENNE PLANT (DYNO NOBEL INC) — high-priority violation on file | CHEYENNE, Laramie, WY | Pass | State |
| 2023-09-20 | CHEYENNE PLANT (DYNO NOBEL INC) — high-priority violation on file | CHEYENNE, Laramie, WY | Pass | State |
| 2023-09-20 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2023-09-19 | SOUTHERN NATURAL GAS | GALLION, Hale, AL | Pass | State |
| 2023-09-19 | SOUTHERN NATURAL GAS | GALLION, Hale, AL | Pass | State |
| 2023-09-19 | WESTROCK COMPANY, LLC | STEVENSON, Jackson, AL | Pass | State |
| 2023-09-19 | OUTOKUMPU STAINLESS USA, LLC | CALVERT, Mobile, AL | Pass | State |
| 2023-09-19 | WESTROCK COATED BOARD LLC-MAHRT MILL | PHENIX CITY, Russell, AL | Pass | State |
| 2023-09-19 | ARCOSA LW BR, LLC | LIVINGSTON, Sumter, AL | Pass | State |
| 2023-09-19 | HONDA MANUFACTURING OF ALABAMA LLC | LINCOLN, Talladega, AL | Pass | State |
| 2023-09-19 | INTERNATIONAL PAPER | PINE HILL, Wilcox, AL | Pass | State |
| 2023-09-19 | UNIVERSITY OF ARKANSAS - FAYETTEVILLE CAMPUS | FAYETTEVILLE, Washington, AR | Pass | State |
| 2023-09-19 | UNIVERSITY OF ARKANSAS - FAYETTEVILLE CAMPUS | FAYETTEVILLE, Washington, AR | Pass | State |
| 2023-09-19 | DRAKE CEMENT- DRAKE ROAD SITE — high-priority violation on file | PAULDEN, Yavapai, AZ | Pass | State |
| 2023-09-19 | CMC STEEL FABRICATORS | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2023-09-19 | SNOW SUMMIT LLC | BIG BEAR LAKE, San Bernardino, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-19 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2023-09-19 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2023-09-19 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2023-09-19 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2023-09-19 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2023-09-19 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2023-09-19 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2023-09-19 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-19 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-19 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-19 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-19 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-19 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-19 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-19 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-19 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-19 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-19 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-19 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-19 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-19 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-19 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-19 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-19 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.