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 |
|---|---|---|---|---|
| 2024-08-19 | PHILLIPS 66 COMPANY/LA REFINERY | CARSON, Los Angeles, CA | Pass | Local |
| 2024-08-19 | TOMA-TEK | FIREBAUGH, Fresno, CA | Pass | Local |
| 2024-08-19 | TOMA-TEK | FIREBAUGH, Fresno, CA | Pass | Local |
| 2024-08-19 | TOMA-TEK | FIREBAUGH, Fresno, CA | Pass | Local |
| 2024-08-19 | TOMA-TEK | FIREBAUGH, Fresno, CA | Pass | Local |
| 2024-08-19 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-19 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-19 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-19 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-19 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-08-19 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-08-19 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-08-19 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-08-19 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-08-19 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-08-19 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-08-19 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-08-19 | LEPRINO FOODS | TRACY, San Joaquin, CA | Pass | Local |
| 2024-08-19 | LEPRINO FOODS | TRACY, San Joaquin, CA | Pass | Local |
| 2024-08-16 | HUMBOLDT SAWMILL COMPANY — high-priority violation on file | SCOTIA, Humboldt, CA | Pass | Local |
| 2024-08-16 | CITY OF ROSEVILLE POWER PLANT#2 | ROCKLIN, Placer, CA | Pass | Local |
| 2024-08-16 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-08-16 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-08-16 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-08-16 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-08-16 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-08-16 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-08-16 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-08-16 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-16 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2024-08-15 | SEARLES VALLEY MINERALS (IMC CHEMICALS) — high-priority violation on file | TRONA, San Bernardino, CA | Pass | Local |
| 2024-08-15 | SEARLES VALLEY MINERALS (IMC CHEMICALS) — high-priority violation on file | TRONA, San Bernardino, CA | Pass | Local |
| 2024-08-15 | USMC - YERMO LOGISTICS CNTR | BARSTOW, San Bernardino, CA | Pass | Local |
| 2024-08-15 | HUMBOLDT SAWMILL COMPANY — high-priority violation on file | SCOTIA, Humboldt, CA | Pass | Local |
| 2024-08-15 | MITSUBISHI CHEMICAL CARBON FIBER AND COMPOSITES — high-priority violation on file | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2024-08-15 | PHILLIPS 66 COMPANY/LA REFINERY | CARSON, Los Angeles, CA | Pass | Local |
| 2024-08-15 | EL SEGUNDO ENERGY CENTER LLC | EL SEGUNDO, Los Angeles, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
| 2024-08-15 | LIBERTY PACKING CO. | VOLTA, Merced, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.