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 |
|---|---|---|---|---|
| 2023-11-02 | LEAF RIVER CELLULOSE LLC — high-priority violation on file | NEW AUGUSTA, Perry, MS | Pass | State |
| 2023-11-02 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2023-11-02 | MONTANA SULPHUR & CHEMICAL | BILLINGS, Yellowstone, MT | Pass | State |
| 2023-11-02 | AMERICAN FUJI SEAL-NORTH CAROLINA | NEWTON, Catawba, NC | Pass | State |
| 2023-11-02 | CAMDEN COUNTY MUNI UTILITIES AUTH (CCMUA) (SM) | CAMDEN, Camden, NJ | Pass | State |
| 2023-11-02 | TIGER COMPRESSOR STATION — high-priority violation on file | MALAGA, Eddy, NM | Pass | State |
| 2023-11-02 | TIGER COMPRESSOR STATION — high-priority violation on file | MALAGA, Eddy, NM | Pass | State |
| 2023-11-02 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-11-02 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-11-02 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-11-02 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-11-02 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-11-02 | CARSON CITY SANITARY LANDFILL | CARSON CITY, Carson City (city), NV | Pass | State |
| 2023-11-02 | SUN PEAK GENERATING STATION | LAS VEGAS, Clark, NV | Pass | Local |
| 2023-11-02 | EOG RESOURCES, INC. - EDIE 17-13-6 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-11-02 | EOG RESOURCES, INC. - EDIE 17-13-6 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-11-02 | EOG RESOURCES, INC. - EDIE 17-13-6 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-11-02 | SUNRISE COOPERATIVE INC. | GALION, Crawford, OH | Pass | State |
| 2023-11-02 | FUCHS PAD 952477 | CLARINGTON, Monroe, OH | Pass | State |
| 2023-11-02 | FUCHS PAD 952477 | CLARINGTON, Monroe, OH | Pass | State |
| 2023-11-02 | FUCHS PAD 952477 | CLARINGTON, Monroe, OH | Pass | State |
| 2023-11-02 | MOSER PAD 952658 | CLARINGTON, Monroe, OH | Pass | State |
| 2023-11-02 | MOSER PAD 952658 | CLARINGTON, Monroe, OH | Pass | State |
| 2023-11-02 | MOSER PAD 952658 | CLARINGTON, Monroe, OH | Pass | State |
| 2023-11-02 | EMERY OLEOCHEMICALS LLC | CINCINNATI, Hamilton, OH | Pass | State |
| 2023-11-02 | EMERY OLEOCHEMICALS LLC | CINCINNATI, Hamilton, OH | Pass | State |
| 2023-11-02 | FW MIDCON I LLC / CALF ROPE 1 1 12MXH STRACK 1 2 11XH | WATONGA, Blaine, OK | Pass | State |
| 2023-11-02 | ET GATHERING PROCESSING LLC / SOLDIER COMPRESSOR STATION | BRADLEY, Grady, OK | Pass | State |
| 2023-11-02 | ET GATHERING PROCESSING LLC / SOLDIER COMPRESSOR STATION | BRADLEY, Grady, OK | Pass | State |
| 2023-11-02 | BCE MACH III LLC / EHU 234H 235H | HENNESSEY, Kingfisher, OK | Pass | State |
| 2023-11-02 | ET GATHERING PROCESSING LLC / CHEYENNE COMPRESSOR STATION | CHEYENNE, Roger Mills, OK | Pass | State |
| 2023-11-02 | ET GATHERING PROCESSING LLC / CANUTE COMPRESSOR STATION | BURNS FLAT, Washita, OK | Pass | State |
| 2023-11-02 | ETC NORTHEAST PIPELINE LLC/BARTO COMP STA | HUGHESVILLE, Lycoming, PA | Pass | State |
| 2023-11-02 | POET BIOREFINING- OBION, LLC | OBION, Obion, TN | Pass | State |
| 2023-11-02 | PACIFICORP HUNTER | UTAH, Undetermined, UT | Pass | State |
| 2023-11-02 | PORT TOWNSEND PAPER CORPORATION — high-priority violation on file | PORT TOWNSEND, Jefferson, WA | Pass | State |
| 2023-11-02 | 3M CUMBERLAND FACILITY | CUMBERLAND, Barron, WI | Pass | State |
| 2023-11-02 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Pass | State |
| 2023-11-02 | WAUPACA FOUNDRY INC - PLANT 2 & 3 | WAUPACA, Waushara, WI | Pass | State |
| 2023-11-02 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | Pass | State |
| 2023-11-02 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-11-02 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-11-02 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-11-02 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-11-01 | GEORGIA-PACIFIC BREWTON LLC | BREWTON, Escambia, AL | Pass | State |
| 2023-11-01 | GEORGIA-PACIFIC BREWTON LLC | BREWTON, Escambia, AL | Pass | State |
| 2023-11-01 | DCP MIDSTREAM | CODEN, Mobile, AL | Pass | State |
| 2023-11-01 | DCP MIDSTREAM | CODEN, Mobile, AL | Pass | State |
| 2023-11-01 | 3M COMPANY | DECATUR, Morgan, AL | Pass | State |
| 2023-11-01 | SANDERS LEAD CO | TROY, Pike, AL | Pass | State |
| 2023-11-01 | APACHE GENERATING STATION | COCHISE, Cochise, AZ | Pass | State |
| 2023-11-01 | CITY OF SACRAMENTO - 28TH ST LANDFILL | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2023-11-01 | MCCLELLAN BUSINESS PARK — high-priority violation on file | MCCLELLAN, Sacramento, CA | Pass | Local |
| 2023-11-01 | LUNDAY-THAGARD CO DBA WORLD OIL REFINING — high-priority violation on file | SOUTH GATE, Los Angeles, CA | Pass | Local |
| 2023-11-01 | LUNDAY-THAGARD CO DBA WORLD OIL REFINING — high-priority violation on file | SOUTH GATE, Los Angeles, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2023-11-01 | ELK HILLS POWER LLC | TUPMAN, Kern, CA | Pass | Local |
| 2023-11-01 | ELK HILLS POWER LLC | TUPMAN, Kern, CA | Pass | Local |
| 2023-11-01 | ELK HILLS POWER LLC | TUPMAN, Kern, CA | Pass | Local |
| 2023-11-01 | ELK HILLS POWER LLC | TUPMAN, Kern, CA | Pass | Local |
| 2023-11-01 | ELK HILLS POWER LLC | TUPMAN, Kern, CA | Pass | Local |
| 2023-11-01 | ELK HILLS POWER LLC | TUPMAN, Kern, CA | Pass | Local |
| 2023-11-01 | ELK HILLS POWER LLC | TUPMAN, Kern, CA | Pass | Local |
| 2023-11-01 | ELK HILLS POWER LLC | TUPMAN, Kern, CA | Pass | Local |
| 2023-11-01 | ELK HILLS POWER LLC | TUPMAN, Kern, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.