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 |
|---|---|---|---|---|
| 2023-08-15 | MONTANA SULPHUR & CHEMICAL | BILLINGS, Yellowstone, MT | Pass | State |
| 2023-08-15 | MONTANA SULPHUR & CHEMICAL | BILLINGS, Yellowstone, MT | Pass | State |
| 2023-08-15 | NCEMC - ANSON PLANT | LILESVILLE, Anson, NC | Pass | State |
| 2023-08-15 | LENOIR MEMORIAL HOSPITAL INC | KINSTON, Lenoir, NC | Pass | State |
| 2023-08-15 | OPPD SARPY COUNTY STATION | BELLEVUE, Sarpy, NE | Pass | State |
| 2023-08-15 | NEWINGTON ENERGY | NEWINGTON, Rockingham, NH | Pass | State |
| 2023-08-15 | NEWINGTON ENERGY | NEWINGTON, Rockingham, NH | Pass | State |
| 2023-08-15 | ALAMO COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-08-15 | ALAMO COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-08-15 | ALAMO COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-08-15 | ALAMO COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-08-15 | DAGGER STATE SWD | MONUMENT, Lea, NM | Pass | State |
| 2023-08-15 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2023-08-15 | GOLD QUARRY OPERATIONS — high-priority violation on file | CARLIN, Eureka, NV | Fail | State |
| 2023-08-15 | HEMPSTEAD RESOURCE RECOVERY FACILITY | WESTBURY, Nassau, NY | Pass | State |
| 2023-08-15 | BCE MACH LLC / GRAHAM 1 27 12 STA | CHEROKEE, Alfalfa, OK | Pass | State |
| 2023-08-15 | MARKWEST OKLAHOMA GAS CO LLC / OKARCHE COMPRESSOR STATION | OKARCHE, Canadian, OK | Pass | State |
| 2023-08-15 | MARKWEST OKLAHOMA GAS CO LLC / OKARCHE COMPRESSOR STATION | OKARCHE, Canadian, OK | Pass | State |
| 2023-08-15 | DCP OPERATING CO LP / VIPER COMPRESSOR STATION | LINDSAY, Garvin, OK | Pass | State |
| 2023-08-15 | ET GATHERING PROCESSING LLC / ALEX COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2023-08-15 | ET GATHERING PROCESSING LLC / ALEX COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2023-08-15 | BCE MACH III MIDSTREAM HOLDINGS LLC / SOUTH OF LINCOLN COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-08-15 | BCE MACH III MIDSTREAM HOLDINGS LLC / SOUTH OF LINCOLN COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-08-15 | FW MIDCON I LLC / ALLEN 1H 29X MCCORN 1H 18X | DIBBLE, McClain, OK | Pass | State |
| 2023-08-15 | FW MIDCON I LLC / TOM 0604 1H 13X TDR 0604 1H 14X | CRINER, McClain, OK | Pass | State |
| 2023-08-15 | GREAT HORNED OWLS LLC / DORIS PAD | LEEDEY, Roger Mills, OK | Pass | State |
| 2023-08-15 | DCP OPERATING CO LP / YELLOW JACKET COMPRESSOR STATION | BRAY, Stephens, OK | Pass | State |
| 2023-08-15 | BCE MACH LLC / CLEARWATER 26 28 14 STATION | ALVA, Woods, OK | Pass | State |
| 2023-08-15 | GEORGIA-PACIFIC WAUNA LLC — high-priority violation on file | CLATSKANIE, Clatsop, OR | Pass | State |
| 2023-08-15 | PORTLAND GENERAL ELECTRIC COMPANY — high-priority violation on file | CLATSKANIE, Columbia, OR | Pass | State |
| 2023-08-15 | PORTLAND GENERAL ELECTRIC COMPANY — high-priority violation on file | CLATSKANIE, Columbia, OR | Pass | State |
| 2023-08-15 | US DOD/RAVEN ROCK MTN COMPLEX | BLUE RIDGE SUMMIT, Adams, PA | Pass | State |
| 2023-08-15 | JOHN MIDDLETON CO/KING OF PRUSSIA | KING OF PRUSSIA, Montgomery, PA | Pass | State |
| 2023-08-15 | MARKWEST LIBERTY BLUESTONE LLC/TRILLITH COMP STA | HARMONY, Butler, PA | Pass | State |
| 2023-08-15 | BKV OPR LLC/PLUSHANSKI WELL PAD | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2023-08-15 | WARREN EP INC/REIMILLER PAD | MESHOPPEN, Wyoming, PA | Pass | State |
| 2023-08-15 | EXPAND OPERATING LLC/BLYE WELL PAD | MONTROSE, Susquehanna, PA | Pass | State |
| 2023-08-15 | NUCOR STEEL - BERKELEY | HUGER, Berkeley, SC | Pass | State |
| 2023-08-15 | SANTEE COOPER WINYAH GENERATING STATION | GEORGETOWN, Georgetown, SC | Pass | State |
| 2023-08-15 | REEVES CONSTRUCTION COMPANY - PACOLET ASPHALT PLANT | PACOLET, Spartanburg, SC | Pass | State |
| 2023-08-15 | PETE LIEN & SONS, INC. MAIN PLANT | RAPID CITY, Pennington, SD | Pass | State |
| 2023-08-15 | ALLEN COMBINED CYCLE PLANT - TVA | MEMPHIS, Shelby, TN | Pass | Local |
| 2023-08-15 | LENZ ENTERPRISES INC | STANWOOD, Snohomish, WA | Pass | Local |
| 2023-08-15 | LENZ ENTERPRISES INC | STANWOOD, Snohomish, WA | Pass | Local |
| 2023-08-15 | LENZ ENTERPRISES INC | STANWOOD, Snohomish, WA | Fail | Local |
| 2023-08-15 | LENZ ENTERPRISES INC | STANWOOD, Snohomish, WA | Pass | Local |
| 2023-08-15 | LENZ ENTERPRISES INC | STANWOOD, Snohomish, WA | Fail | Local |
| 2023-08-15 | LENZ ENTERPRISES INC | STANWOOD, Snohomish, WA | Fail | Local |
| 2023-08-15 | XCEL ENERGY BAY FRONT GENERATING STATION | ASHLAND, Ashland, WI | Pass | State |
| 2023-08-15 | WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file | ROTHSCHILD, Marathon, WI | Pass | State |
| 2023-08-15 | WAUPACA FOUNDRY INC - PLANT 1 | WAUPACA, Waushara, WI | Pass | State |
| 2023-08-15 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-15 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-15 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-15 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-15 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-15 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-15 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-15 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-15 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-15 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-08-15 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-08-15 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-08-15 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-08-15 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-08-15 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-08-15 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-08-14 | LUNDAY-THAGARD CO DBA WORLD OIL REFINING — high-priority violation on file | SOUTH GATE, Los Angeles, CA | Pass | Local |
| 2023-08-14 | SO CAL GAS CO | VALENCIA, Los Angeles, CA | Fail | Local |
| 2023-08-14 | SO CAL GAS CO | VALENCIA, Los Angeles, CA | Fail | Local |
| 2023-08-14 | NRO - AEROSPACE DATA FACIITY (ADF-C) | AURORA, Arapahoe, CO | N/A | State |
| 2023-08-14 | INTERNATIONAL PAPER COMPANY - ROME MILL | ROME, Floyd, GA | Pass | State |
| 2023-08-14 | JOHN DEERE FOUNDRY WATERLOO | WATERLOO, Black Hawk, IA | Pass | State |
| 2023-08-14 | WARREN PAVING INC, HATTIESBURG PLANT | HATTIESBURG, Forrest, MS | Pass | State |
| 2023-08-14 | WARREN PAVING INC, HATTIESBURG PLANT | HATTIESBURG, Forrest, MS | Pass | State |
| 2023-08-14 | AQUEDUCT COMPRESSOR STATION | WHITES CITY, Eddy, NM | Pass | State |
| 2023-08-14 | INR MIDSTREAM, LLC - REUSSER | LEWISVILLE, Monroe, OH | Pass | State |
| 2023-08-14 | INR MIDSTREAM, LLC - REUSSER | LEWISVILLE, Monroe, OH | Pass | State |
| 2023-08-14 | INR MIDSTREAM, LLC - REUSSER | LEWISVILLE, Monroe, OH | Pass | State |
| 2023-08-14 | INR MIDSTREAM, LLC - REUSSER | LEWISVILLE, Monroe, OH | Pass | State |
| 2023-08-14 | INR MIDSTREAM, LLC - REUSSER | LEWISVILLE, Monroe, OH | Pass | State |
| 2023-08-14 | INR MIDSTREAM, LLC - REUSSER | LEWISVILLE, Monroe, OH | Pass | State |
| 2023-08-14 | INR MIDSTREAM, LLC - REUSSER | LEWISVILLE, Monroe, OH | Pass | State |
| 2023-08-14 | INR MIDSTREAM, LLC - REUSSER | LEWISVILLE, Monroe, OH | Pass | State |
| 2023-08-14 | INR MIDSTREAM, LLC - REUSSER | LEWISVILLE, Monroe, OH | Pass | State |
| 2023-08-14 | BCE MACH LLC / SCHOELING 5 26 12 1H AND MURROW 8 26 1 | CHEROKEE, Alfalfa, OK | Pass | State |
| 2023-08-14 | BCE MACH LLC / KLETKE 18 27 12 STA | BURLINGTON, Alfalfa, OK | Pass | State |
| 2023-08-14 | DCP OPERATING CO LP / SKIPPER COMPRESSOR STATION | FOSTER, Stephens, OK | Pass | State |
| 2023-08-14 | FW MIDCON I LLC / ELY 0104 6H 7H 8H 18X | VELMA, Stephens, OK | Pass | State |
| 2023-08-14 | DIVERSIFIED PRODUCTION LLC / HULL COMPRESSOR STATION | WAYNOKA, Woods, OK | Pass | State |
| 2023-08-14 | BKV OPR LLC/MIRABELLI PAD | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2023-08-14 | VULCAN CONSTRUCTION MATERIALS LLC BLACKSBURG QUARRY | BLACKSBURG, Cherokee, SC | Pass | State |
| 2023-08-14 | LENZ ENTERPRISES INC | STANWOOD, Snohomish, WA | Fail | Local |
| 2023-08-14 | LENZ ENTERPRISES INC | STANWOOD, Snohomish, WA | Fail | Local |
| 2023-08-14 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-08-14 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2023-08-14 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2023-08-14 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2023-08-14 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2023-08-12 | FREUND BAKING CO | GLENDALE, Los Angeles, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.