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 |
|---|---|---|---|
| 2026-08-25 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-08-25 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-08-25 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-07-29 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-07-29 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-07-29 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-07-29 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-07-23 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-07-23 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-07-23 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-07-23 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-09 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-07-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | Pass | Local |
| 2026-06-25 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-06-24 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-06-24 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-24 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-24 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-24 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-23 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-23 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-23 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-23 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-16 | CALIFORNIA RESOURCES PRODUCTION CORP | Pass | Local |
| 2026-06-16 | CALIFORNIA RESOURCES PRODUCTION CORP | Pass | Local |
| 2026-06-16 | CALIFORNIA RESOURCES PRODUCTION CORP | Pass | Local |
| 2026-06-09 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-06-09 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-09 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-09 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-09 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-09 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-09 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-09 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-09 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-08 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-08 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-08 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-06-08 | AERA ENERGY LLC — high-priority violation on file | Pass | Local |
| 2026-05-28 | CALIFORNIA RESOURCES PRODUCTION CORP | Pass | Local |
| 2026-05-28 | CALIFORNIA RESOURCES PRODUCTION CORP | Pass | Local |
| 2026-05-19 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-05-14 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-13 | E&B NATIONAL RESOURCES MANAGEMENT | Pass | Local |
| 2026-05-06 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-05-05 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-05-05 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-04-16 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-04-16 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-04-13 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-04-13 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-04-13 | SAN JOAQUIN REFINING CO — high-priority violation on file | Pass | Local |
| 2026-04-09 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-04-09 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-04-08 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | Pass | Local |
| 2026-04-08 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-04-08 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-04-08 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-04-08 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-04-08 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | Pass | Local |
| 2026-04-02 | PLAINS MARKETING, LP — high-priority violation on file | Pass | Local |
| 2026-04-02 | PLAINS MARKETING, LP — high-priority violation on file | Pass | Local |
| 2026-04-02 | PLAINS MARKETING, LP — high-priority violation on file | Pass | Local |
| 2026-04-02 | PLAINS MARKETING, LP — high-priority violation on file | Pass | Local |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.