EPA Air · stack tests by year
Air-emissions stack tests in 2020
- 33,437Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2020
- California 15,352
- Ohio 2,194
- Florida 1,532
- Oklahoma 1,517
- Indiana 1,473
- Georgia 1,147
- New Mexico 846
- Pennsylvania 725
- Alabama 674
- Texas 617
- Missouri 607
- Arkansas 589
- Mississippi 438
- Colorado 429
- Washington 407
- Iowa 355
- North Carolina 274
- Wyoming 235
- Wisconsin 229
- Michigan 222
- South Carolina 221
- Montana 217
- Minnesota 213
- Delaware 211
- Kentucky 184
- West Virginia 175
- Utah 158
- Tennessee 149
- Kansas 144
- Nebraska 142
- Alaska 141
- Maine 136
- Nevada 134
- Virginia 132
- Illinois 129
- North Dakota 129
- New Jersey 122
- Connecticut 110
- Arizona 97
- New York 93
- Hawaii 84
- Louisiana 83
- Idaho 81
- New Hampshire 72
- Maryland 46
- South Dakota 46
- Oregon 39
- Rhode Island 30
- District of Columbia 30
- Vermont 17
- Massachusetts 7
- Puerto Rico 3
Other years
Air-emissions stack tests recorded in 2020
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | CERTAINTEED CORP — high-priority violation on file | CHOWCHILLA, Madera, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2020-09-15 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Pass | State |
| 2020-09-15 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Pass | State |
| 2020-09-15 | KERR MCGEE - MUSTANG Y-34 PRODUCTION FAC | KEENESBURG 10.3 MI. N OF, Weld, CO | Pass | State |
| 2020-09-15 | KERR MCGEE - MUSTANG Y-34 PRODUCTION FAC | KEENESBURG 10.3 MI. N OF, Weld, CO | Pass | State |
| 2020-09-15 | KERR MCGEE - MUSTANG Y-34 PRODUCTION FAC | KEENESBURG 10.3 MI. N OF, Weld, CO | Pass | State |
| 2020-09-15 | HANDYTUBE LLC | CAMDEN, Kent, DE | Pass | State |
| 2020-09-15 | HANDYTUBE LLC | CAMDEN, Kent, DE | Pass | State |
| 2020-09-15 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2020-09-15 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2020-09-15 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2020-09-15 | PREFERRED MATERIALS, INC. | MELBOURNE, Brevard, FL | Pass | State |
| 2020-09-15 | SEAPORT CANAVERAL CORP. | CAPE CANAVERAL, Brevard, FL | Pass | State |
| 2020-09-15 | CEMEX CONSTRUCTION MATERIALS FLORIDA,LLC | BROOKSVILLE, Hernando, FL | Pass | State |
| 2020-09-15 | CEMEX CONSTRUCTION MATERIALS FLORIDA,LLC | BROOKSVILLE, Hernando, FL | Pass | State |
| 2020-09-15 | CEMEX CONSTRUCTION MATERIALS FLORIDA,LLC | BROOKSVILLE, Hernando, FL | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in 2020. It lists 33,437 stack tests recorded nationwide in 2020.