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 |
|---|---|---|---|---|
| 2021-12-21 | TIN TECH & REF LLC/WEST CHESTER | WEST CHESTER, Chester, PA | Pass | State |
| 2021-12-21 | UNIVERSITY OF RHODE ISLAND | KINGSTON, Washington, RI | Pass | State |
| 2021-12-21 | 3M COMPANY | CLINTON, Anderson, TN | Pass | State |
| 2021-12-21 | CHEVRON USA | UTAH, Undetermined, UT | Pass | State |
| 2021-12-21 | VAUGHAN-BASSETT FURNITURE COMPANY | GALAX, Galax (city), VA | Pass | State |
| 2021-12-20 | TURTLES/BUTTERFLIES PAD | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2021-12-20 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Fail | State |
| 2021-12-20 | NUCOR STEEL BIRMINGHAM,INC. | BIRMINGHAM, Jefferson, AL | Pass | Local |
| 2021-12-20 | RAZORBACK GATHERING COMPANY, LLC. - JUDSONIA CPF 1 | JUDSONIA, White, AR | Pass | State |
| 2021-12-20 | RAZORBACK GATHERING COMPANY, LLC. - JUDSONIA CPF 1 | JUDSONIA, White, AR | Pass | State |
| 2021-12-20 | HANDYTUBE LLC | CAMDEN, Kent, DE | N/A | State |
| 2021-12-20 | HANDYTUBE LLC | CAMDEN, Kent, DE | N/A | State |
| 2021-12-20 | MIAMI-DADE WATER AND SEWER DEPARTMENT | HIALEAH, Miami-Dade, FL | Pass | State |
| 2021-12-20 | MIAMI-DADE WATER AND SEWER DEPARTMENT | HIALEAH, Miami-Dade, FL | Pass | State |
| 2021-12-20 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2021-12-20 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2021-12-20 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2021-12-20 | HONDA DEVELOPMENT & MANUFACTURING OF AMERICA LLC INDIANA AUT — high-priority violation on file | GREENSBURG, Decatur, IN | Pass | State |
| 2021-12-20 | HONDA DEVELOPMENT & MANUFACTURING OF AMERICA LLC INDIANA AUT — high-priority violation on file | GREENSBURG, Decatur, IN | Pass | State |
| 2021-12-20 | CANAL 3 GENERATING LLC | SANDWICH, Barnstable, MA | Pass | State |
| 2021-12-20 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2021-12-20 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2021-12-20 | XCEL ENERGY - PRAIRIE ISLAND NUCLEAR PLANT | WELCH, Goodhue, MN | Pass | State |
| 2021-12-20 | NORTHERN NATURAL GAS CO - FARIBAULT | FARIBAULT, Rice, MN | Pass | State |
| 2021-12-20 | POET BIOREFINING-FAIRMONT LLC — high-priority violation on file | FAIRMONT, Fillmore, NE | Pass | State |
| 2021-12-20 | BOROS EAST FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2021-12-20 | BOROS EAST FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2021-12-20 | EOG RESOURCES, INC. - DEERSVILLE HN FRA PAD | DEERSVILLE, Harrison, OH | Pass | State |
| 2021-12-20 | EOG RESOURCES, INC. - DEERSVILLE HN FRA PAD | DEERSVILLE, Harrison, OH | Pass | State |
| 2021-12-20 | VALIDUS ENERGY II MIDCON LLC / BARBARO PAD | MUSTANG, Canadian, OK | Pass | State |
| 2021-12-20 | DIVERSIFIED PRODUCTION LLC / HOWARD 5 19 17 1H PAD | SEILING, Dewey, OK | Pass | State |
| 2021-12-20 | ENERFIN GATHERING EAST LLC / SOUTH OKEMAH COMPRESSOR STATION | OKEMAH, Okfuskee, OK | Pass | State |
| 2021-12-20 | MARKWEST OKLAHOMA GAS CO LLC / MYER MOUNTAIN COMPRESSOR STATION — high-priority violation on file | SCIPIO, Pittsburg, OK | Pass | State |
| 2021-12-20 | DIVERSIFIED PRODUCTION LLC / WHITNEY 9 11 17 2H STATION | CLINTON, Washita, OK | Pass | State |
| 2021-12-20 | CNTY LDFL INC/CNTY ENVIRONMENTAL OF CLARION | LEEPER, Clarion, PA | Pass | State |
| 2021-12-20 | BRASKEM AMER INC/MARCUS HOOK | MARCUS HOOK, Delaware, PA | Fail | State |
| 2021-12-20 | MARKWEST LIBERTY MIDSTREAM/BAKER COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2021-12-20 | REGENCY MARCELLUS GAS GATHERING LLC/OGONTZ WEST COMP STA | CUMMINS TWP, Lycoming, PA | Pass | State |
| 2021-12-20 | SMART SAND INC — high-priority violation on file | OAKDALE, Oconto, WI | Pass | State |
| 2021-12-19 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-12-19 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-12-18 | US AIR FORCE, PACAF REGIONAL SUPPORT C / EARECKSON AIR STATION, SHEMYA ISLAND | DUTCH HARBOR, Aleutians West (CA), AK | Pass | State |
| 2021-12-18 | US AIR FORCE, PACAF REGIONAL SUPPORT C / EARECKSON AIR STATION, SHEMYA ISLAND | DUTCH HARBOR, Aleutians West (CA), AK | N/A | State |
| 2021-12-18 | US AIR FORCE, PACAF REGIONAL SUPPORT C / EARECKSON AIR STATION, SHEMYA ISLAND | DUTCH HARBOR, Aleutians West (CA), AK | N/A | State |
| 2021-12-18 | US AIR FORCE, PACAF REGIONAL SUPPORT C / EARECKSON AIR STATION, SHEMYA ISLAND | DUTCH HARBOR, Aleutians West (CA), AK | N/A | State |
| 2021-12-18 | AES WARRIOR RUN | CUMBERLAND, Allegany, MD | Pass | State |
| 2021-12-18 | COLLINS TREE SERVICE PIT | NEWPORT, Carteret, NC | Pass | State |
| 2021-12-17 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Fail | State |
| 2021-12-17 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2021-12-17 | SOUTHWEST IOWA RENEWABLE ENERGY — high-priority violation on file | COUNCIL BLUFFS, Pottawattamie, IA | Fail | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | WAUPACA FOUNDRY INC PLANT 5 — high-priority violation on file | TELL CITY, Perry, IN | Pass | State |
| 2021-12-17 | WAUPACA FOUNDRY INC PLANT 5 — high-priority violation on file | TELL CITY, Perry, IN | Pass | State |
| 2021-12-17 | SABINE PASS LNG LP AND SABINE PASS LIQUEFACTION LLC - SABINE PASS LNG TERMINAL | CAMERON, Cameron, LA | Pass | State |
| 2021-12-17 | CHOCTAW GENERATION LIMITED PARTNERSHIP, RED HILLS GENERATION FACILITY | ACKERMAN, Choctaw, MS | Pass | State |
| 2021-12-17 | CHOCTAW GENERATION LIMITED PARTNERSHIP, RED HILLS GENERATION FACILITY | ACKERMAN, Choctaw, MS | Pass | State |
| 2021-12-17 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2021-12-17 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2021-12-17 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2021-12-17 | BLUE DIAMOND HILL GYPSUM — high-priority violation on file | BLUE DIAMOND, Clark, NV | Pass | Local |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.