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 |
|---|---|---|---|---|
| 2021-10-28 | EQT ARO LLC/TRACT 289 COMP STA — high-priority violation on file | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2021-10-28 | NAVAL FOUNDRY AND PROPELLER CTR/PHILA | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2021-10-28 | SI GROUP INC ORANGEBURG | ORANGEBURG, Orangeburg, SC | Pass | State |
| 2021-10-28 | SAN MIGUEL ELECTRIC PLANT | CHRISTINE, Atascosa, TX | Pass | State |
| 2021-10-28 | CAPITOL AGGREGATES CEMENT PLANT | SAN ANTONIO, Bexar, TX | Pass | State |
| 2021-10-28 | CALAVERAS PLANT SITE | SAN ANTONIO, Bexar, TX | Pass | State |
| 2021-10-28 | CALAVERAS PLANT SITE | SAN ANTONIO, Bexar, TX | Pass | State |
| 2021-10-28 | SAN ANTONIO REFINED PRODUCTS TERMINAL SOUTH | SAN ANTONIO, Bexar, TX | Pass | State |
| 2021-10-28 | HUNTER FACILITY | NEW BRAUNFELS, Comal, TX | Pass | State |
| 2021-10-28 | HUNTER FACILITY | NEW BRAUNFELS, Comal, TX | Pass | State |
| 2021-10-28 | CEMEX CEMENT OF TEXAS | NEW BRAUNFELS, Comal, TX | Pass | State |
| 2021-10-28 | AREA 71 CGP FACILITY | KENEDY, Karnes, TX | Pass | State |
| 2021-10-28 | AREA 71 CGP FACILITY | KENEDY, Karnes, TX | Pass | State |
| 2021-10-28 | NORTH LONGHORN CENTRAL TANK BATTERY | KARNES CITY, Karnes, TX | Pass | State |
| 2021-10-28 | NORTHWEST PIPELINE GP SUMNER | SUMNER, Pierce, WA | Pass | Local |
| 2021-10-28 | NORTHWEST PIPELINE GP SUMNER | SUMNER, Pierce, WA | Pass | Local |
| 2021-10-28 | UNITED GRAIN CORPORATION — high-priority violation on file | VANCOUVER, Clark, WA | Pass | Local |
| 2021-10-28 | UNITED GRAIN CORPORATION — high-priority violation on file | VANCOUVER, Clark, WA | Pass | Local |
| 2021-10-28 | UNITED GRAIN CORPORATION — high-priority violation on file | VANCOUVER, Clark, WA | Pass | Local |
| 2021-10-28 | APPLETON GRP LLC — high-priority violation on file | SOUTH MILWAUKEE, Monroe, WI | Pass | State |
| 2021-10-28 | GREYBULL PLANT (WYO-BEN, INC.) | GREYBULL, Big Horn, WY | Pass | State |
| 2021-10-27 | EOG- CLARKS CREEK CENTRAL FACILITY | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2021-10-27 | EOG- CLARKS CREEK CENTRAL FACILITY | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2021-10-27 | EOG- CLARKS CREEK CENTRAL FACILITY | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2021-10-27 | SOUTHERN NATURAL GAS | ELMORE, Elmore, AL | Pass | State |
| 2021-10-27 | SOUTHERN NATURAL GAS | ELMORE, Elmore, AL | Pass | State |
| 2021-10-27 | HILCORP ENERGY COMPANY | CREOLA, Mobile, AL | Pass | State |
| 2021-10-27 | HILCORP ENERGY COMPANY | CREOLA, Mobile, AL | Pass | State |
| 2021-10-27 | RESOLUTE FP US INC. | COOSA PINES, Talladega, AL | Pass | State |
| 2021-10-27 | RESOLUTE FP US INC. | COOSA PINES, Talladega, AL | Pass | State |
| 2021-10-27 | RESOLUTE FP US INC. | COOSA PINES, Talladega, AL | Pass | State |
| 2021-10-27 | RESOLUTE FP US INC. | COOSA PINES, Talladega, AL | Pass | State |
| 2021-10-27 | BASF CORPORATION | HUNTSVILLE, Madison, AL | Pass | Local |
| 2021-10-27 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Fail | State |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-27 | WELLHEAD POWER PANOCHE, LLC — high-priority violation on file | FIREBAUGH, Fresno, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.