EPA Air · stack tests by county and year
Air-emissions stack tests in Kern County, California, 2026
- 320Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Kern County, California during 2026. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Kern County facility page.
Kern County, California, 2026
- Inspections 635
Air-emissions stack tests in Kern County, other years
Air-emissions stack tests recorded in Kern County, California, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-04-02 | PLAINS MARKETING, LP — high-priority violation on file | Pass | Local |
| 2026-04-02 | AERA ENERGY — high-priority violation on file | Pass | Local |
| 2026-04-02 | AERA ENERGY — high-priority violation on file | Pass | Local |
| 2026-04-02 | AERA ENERGY — high-priority violation on file | Pass | Local |
| 2026-04-02 | AERA ENERGY — high-priority violation on file | Pass | Local |
| 2026-04-02 | AERA ENERGY — high-priority violation on file | Pass | Local |
| 2026-04-02 | AERA ENERGY — high-priority violation on file | Pass | Local |
| 2026-04-02 | AERA ENERGY — high-priority violation on file | Pass | Local |
| 2026-03-31 | ALON BAKERSFIELD REFINING — high-priority violation on file | Pass | Local |
| 2026-03-31 | ALON BAKERSFIELD REFINING — high-priority violation on file | Pass | Local |
| 2026-03-31 | ALON BAKERSFIELD REFINING — high-priority violation on file | Pass | Local |
| 2026-03-31 | ALON BAKERSFIELD REFINING — high-priority violation on file | Pass | Local |
| 2026-03-31 | ALON BAKERSFIELD REFINING — high-priority violation on file | Pass | Local |
| 2026-03-31 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-03-31 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-03-31 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-31 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-30 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-03-30 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-03-25 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-03-25 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-25 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-25 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-25 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-25 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-25 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-03-11 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-03-05 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-18 | CALIFORNIA RESOURCES ELK HILLS LLC — high-priority violation on file | Pass | Local |
| 2026-02-13 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-13 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-13 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-13 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-13 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-13 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-13 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-13 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-13 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-13 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-12 | KERN OIL & REFINING — high-priority violation on file | Pass | Local |
| 2026-02-12 | KERN OIL & REFINING — high-priority violation on file | Pass | Local |
| 2026-02-12 | KERN OIL & REFINING — high-priority violation on file | Pass | Local |
| 2026-02-12 | KERN OIL & REFINING — high-priority violation on file | Pass | Local |
| 2026-02-12 | KERN OIL & REFINING — high-priority violation on file | Pass | Local |
| 2026-02-12 | KERN OIL & REFINING — high-priority violation on file | Pass | Local |
| 2026-02-03 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-03 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-03 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-03 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-02-03 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-01-29 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-01-19 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-01-19 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-01-19 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-01-15 | CRESTWOOD WEST COAST LLC | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.