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 |
|---|---|---|---|---|
| 2021-10-27 | ONEOK FIELD SERVICES CO LLC / RIDDLE COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2021-10-27 | VALIDUS ENERGY II MIDCON LLC / COMMANDO PAD | PAYNE, McClain, OK | Pass | State |
| 2021-10-27 | PETROLINK ENERGY LLC / BLOCKER COMPRESSOR STATION | BLOCKER, Pittsburg, OK | Pass | State |
| 2021-10-27 | PETROLINK ENERGY LLC / CABLE COMPRESSOR STATION | BLOCKER, Pittsburg, OK | Pass | State |
| 2021-10-27 | PROCTER & GAMBLE PAPER PROD CO/MEHOOPANY | MEHOOPANY, Wyoming, PA | Pass | State |
| 2021-10-27 | EQM GATHERING OPCO LLC/TWILIGHT COMP STA | DAISYTOWN, Washington, PA | Pass | State |
| 2021-10-27 | ONEIDA VALLEY MIDSTRAM LLC/CONSTELLATION COMP STA | WEST SUNBURY, Butler, PA | Pass | State |
| 2021-10-27 | NAVAL FOUNDRY AND PROPELLER CTR/PHILA | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2021-10-27 | AB MAURI FOOD INC | MEMPHIS, Shelby, TN | Pass | Local |
| 2021-10-27 | MUNSON COMPRESSOR STATION | KRUM, Denton, TX | Pass | State |
| 2021-10-27 | TOOELE ARMY DEPOT | TOOELE, Tooele, UT | Pass | State |
| 2021-10-27 | PORT TOWNSEND PAPER CORPORATION — high-priority violation on file | PORT TOWNSEND, Jefferson, WA | Pass | State |
| 2021-10-27 | PACIFIC CREST INDUSTRIES, INC. DBA BELLMONT CABINETS COMPANY | SUMNER, Pierce, WA | Pass | Local |
| 2021-10-27 | UNITED GRAIN CORPORATION — high-priority violation on file | VANCOUVER, Clark, WA | Pass | Local |
| 2021-10-27 | QUAD/GRAPHICS INC - LOMIRA | LOMIRA, Dodge, WI | Pass | State |
| 2021-10-27 | APPALACHIA MIDSTREAM SERVICES, L.L.C., PLEASANTS | ADALINE, Marshall, WV | Pass | State |
| 2021-10-26 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2021-10-26 | KRONOSPAN USA — high-priority violation on file | EASTABOGA, Calhoun, AL | Pass | State |
| 2021-10-26 | KRONOSPAN USA — high-priority violation on file | EASTABOGA, Calhoun, AL | Pass | State |
| 2021-10-26 | HILCORP ENERGY COMPANY | CREOLA, Mobile, AL | Pass | State |
| 2021-10-26 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | WADLEY, Randolph, AL | Pass | State |
| 2021-10-26 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | WADLEY, Randolph, AL | Pass | State |
| 2021-10-26 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | WADLEY, Randolph, AL | Pass | State |
| 2021-10-26 | RESOLUTE FP US INC. | COOSA PINES, Talladega, AL | Pass | State |
| 2021-10-26 | RESOLUTE FP US INC. | COOSA PINES, Talladega, AL | Pass | State |
| 2021-10-26 | ENABLE MISSISSIPPI RIVER TRANSMISSION, LLC - FOUNTAIN HILL COMPRESSOR STATION | HAMBURG, Ashley, AR | Pass | State |
| 2021-10-26 | ALBEMARLE CORPORATION-SOUTH PLANT | MAGNOLIA, Columbia, AR | Pass | State |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
| 2021-10-26 | LODI GAS STORAGE LLC | ACAMPO, San Joaquin, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.