EPA Air · stack tests by state and year
Air-emissions stack tests in California, 2024
- 18,905Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in California during 2024; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in California, 2024
- Kern County 7,524
- San Joaquin County 5,176
- Stanislaus County 3,977
- Fresno County 597
- Merced County 538
- Madera County 235
- Kings County 204
- Tulare County 195
- Los Angeles County 169
- San Bernardino County 90
- Monterey County 36
- Orange County 35
- Riverside County 31
- Ventura County 27
- Sacramento County 25
- San Diego County 15
- Placer County 12
- Undetermined County 10
- Santa Cruz County 5
- Humboldt County 3
California, other years
Air-emissions stack tests recorded in California, 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2024-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-08 | FOAM FABRICATORS | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-10-08 | FOAM FABRICATORS | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-10-08 | FOAM FABRICATORS | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-10-08 | FOAM FABRICATORS | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-10-08 | FOAM FABRICATORS | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-10-08 | FOAM FABRICATORS | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-10-07 | GATX CORPORATION | COLTON, San Bernardino, CA | Pass | Local |
| 2024-10-07 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-07 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-07 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-07 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-07 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-07 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-07 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-07 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-04 | TREND OFFSET PRINTING SERVICES INC — high-priority violation on file | LOS ALAMITOS, Orange, CA | Pass | Local |
| 2024-10-04 | SIMI VALLEY LANDFILL & RECYCLING CENTER — high-priority violation on file | SIMI VALLEY, Ventura, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-03 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-02 | SO CAL GAS CO | VALENCIA, Los Angeles, CA | Pass | Local |
| 2024-10-02 | CAMPOS BROTHERS | CARUTHERS, Fresno, CA | Pass | Local |
| 2024-10-02 | CAMPOS BROTHERS | CARUTHERS, Fresno, CA | Pass | Local |
| 2024-10-02 | CAMPOS BROTHERS | CARUTHERS, Fresno, CA | Pass | Local |
| 2024-10-02 | CAMPOS BROTHERS | CARUTHERS, Fresno, CA | Pass | Local |
| 2024-10-02 | EF OXNARD LLC | OXNARD, Ventura, CA | Pass | Local |
| 2024-10-01 | MONTEREY ONE WATER (PREVIOUSLY MONTEREY REGIONAL WTR POLLUTION CTRL) | MARINA, Monterey, CA | Pass | Local |
| 2024-10-01 | MONTEREY ONE WATER (PREVIOUSLY MONTEREY REGIONAL WTR POLLUTION CTRL) | MARINA, Monterey, CA | Pass | Local |
| 2024-10-01 | MONTEREY ONE WATER (PREVIOUSLY MONTEREY REGIONAL WTR POLLUTION CTRL) | MARINA, Monterey, CA | Pass | Local |
| 2024-10-01 | B BRAUN MEDICAL | IRVINE, Orange, CA | Pass | Local |
| 2024-10-01 | B BRAUN MEDICAL | IRVINE, Orange, CA | Pass | Local |
| 2024-10-01 | SDG&E MIRAMAR | SAN DIEGO, San Diego, CA | Pass | Local |
| 2024-09-29 | TESORO LOGISTICS, WILMINGTON TERMINAL | WILMINGTON, Los Angeles, CA | Pass | Local |
| 2024-09-28 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-28 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-28 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-28 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | B BRAUN MEDICAL | IRVINE, Orange, CA | Pass | Local |
| 2024-09-27 | BETA OFFSHORE | HUNTINGTON BEACH, Orange, CA | Pending | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | ALL AMERICAN OIL & GAS CO | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-27 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2024-09-27 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2024-09-27 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2024-09-27 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2024-09-27 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2024-09-27 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2024-09-27 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2024-09-27 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
| 2024-09-27 | CHEVRON USA PRODUCTS INC | TRACY, San Joaquin, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.