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 |
|---|---|---|---|---|
| 2021-11-11 | GEORGIA PACIFIC WOOD PRODUCTS LLC | HOSFORD, Liberty, FL | Pass | State |
| 2021-11-11 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-11 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-11 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-11 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-11 | QUALITY FOOD PROCESSORS LLC | DENISON, Crawford, IA | Pass | State |
| 2021-11-11 | QUALITY FOOD PROCESSORS LLC | DENISON, Crawford, IA | Pass | State |
| 2021-11-11 | NATURAL GAS PIPELINE CO OF AMERICA-#107 | EMERSON, Mills, IA | Pass | State |
| 2021-11-11 | NATURAL GAS PIPELINE CO OF AMERICA-#107 | EMERSON, Mills, IA | Pass | State |
| 2021-11-11 | NATURAL GAS PIPELINE CO OF AMERICA-#107 | EMERSON, Mills, IA | Pass | State |
| 2021-11-11 | NATURAL GAS PIPELINE CO OF AMERICA-#107 | EMERSON, Mills, IA | Pass | State |
| 2021-11-11 | RUVEON - SODA SPRINGS PLANT (TV FACILITY) | SODA SPRINGS, Caribou, ID | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-11 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2021-11-11 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2021-11-11 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2021-11-11 | SIGECO - FB CULLEY GENERATING STATION | NEWBURGH, Warrick, IN | Pass | State |
| 2021-11-11 | LIBERTY LANDFILL LLC | MONTICELLO, White, IN | Pass | State |
| 2021-11-11 | LIBERTY LANDFILL LLC | MONTICELLO, White, IN | Pass | State |
| 2021-11-11 | LIBERTY LANDFILL LLC | MONTICELLO, White, IN | Pass | State |
| 2021-11-11 | LIBERTY LANDFILL LLC | MONTICELLO, White, IN | Pass | State |
| 2021-11-11 | LIBERTY LANDFILL LLC | MONTICELLO, White, IN | Pass | State |
| 2021-11-11 | LIBERTY LANDFILL LLC | MONTICELLO, White, IN | Pass | State |
| 2021-11-11 | NATURAL GAS PIPELINE OF AMERICA - WILSON STATION 194 (AIR) | WILSON, Ellsworth, KS | Pass | State |
| 2021-11-11 | ANGSTROM FIBER AUBURN, LLC | AUBURN, Androscoggin, ME | Pass | State |
| 2021-11-11 | ULLAND BROTHERS INC | CLOQUET, Carlton, MN | Pass | State |
| 2021-11-11 | OWENS-CORNING STATELINE | JOPLIN, Jasper, MO | Pass | State |
| 2021-11-11 | 3M PITTSBORO - INDUSTRIAL MINERAL PRODUCTS | MONCURE, Chatham, NC | Pass | State |
| 2021-11-11 | TEXAS EASTERN PIPELINE-LAMBERTVILLE STA. | MOUNT AIRY, Hunterdon, NJ | Pass | State |
| 2021-11-11 | MARKWEST PIONEER LLC / ARKOMA COMPRESSOR STATION | COALGATE, Coal, OK | Pass | State |
| 2021-11-11 | MARKWEST OKLAHOMA GAS CO LLC / ALPHA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-11-11 | MARKWEST OKLAHOMA GAS CO LLC / HELEN MEIER COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-11-11 | ET GATHERING PROCESSING LLC / CANUTE COMPRESSOR STATION | BURNS FLAT, Washita, OK | Pass | State |
| 2021-11-11 | COLUMBIA GAS TRANS LLC/EAGLE | CHESTER SPRINGS, Chester, PA | Pass | State |
| 2021-11-11 | SCHUYLKILL ENERGY RES/ST NICHOLAS COGEN — high-priority violation on file | SHENANDOAH, Schuylkill, PA | Pass | State |
| 2021-11-11 | LANCASTER CNTY SWMA/SUSQ RESOURCE MGMT COMPLEX — high-priority violation on file | HARRISBURG, Dauphin, PA | Pass | State |
| 2021-11-11 | REGENCY MARCELLUS GATHERING LLC/BRADFORD WEST COMP STA | GRANVILLE SUMMIT, Bradford, PA | Pass | State |
| 2021-11-11 | RESONAC GRAPHITE AMERICA INC — high-priority violation on file | RIDGEVILLE, Dorchester, SC | Pass | State |
| 2021-11-11 | KIMBERLY-CLARK CORPORATION | LOUDON, Loudon, TN | Pass | State |
| 2021-11-11 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2021-11-11 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2021-11-10 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | BUTLER, Choctaw, AL | Pass | State |
| 2021-11-10 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC | BUTLER, Choctaw, AL | Pass | State |
| 2021-11-10 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC | BUTLER, Choctaw, AL | Pass | State |
| 2021-11-10 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC | BUTLER, Choctaw, AL | Pass | State |
| 2021-11-10 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC | BUTLER, Choctaw, AL | Pass | State |
| 2021-11-10 | BOISE WHITE PAPER LLC | JACKSON, Clarke, AL | Pass | State |
| 2021-11-10 | BOISE WHITE PAPER LLC | JACKSON, Clarke, AL | Pass | State |
| 2021-11-10 | DCP MIDSTREAM | CODEN, Mobile, AL | Pass | State |
| 2021-11-10 | ACME BRICK TILE & STONE, INC. | MONTGOMERY, Montgomery, AL | Pass | State |
| 2021-11-10 | ACME BRICK TILE & STONE, INC. | MONTGOMERY, Montgomery, AL | Pass | State |
| 2021-11-10 | SOUTHERN NATURAL GAS | REFORM, Pickens, AL | Pass | State |
| 2021-11-10 | APACHE GENERATING STATION | COCHISE, Cochise, AZ | Pass | State |
| 2021-11-10 | REAL ALLOY ARIZONA | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2021-11-10 | EASTERN MUNICIPAL WATER DIST-PERRIS | PERRIS, Riverside, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.