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 |
Page 1 of 4NextPage 2
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 Kern county, CA, 2026. It lists 320 stack tests recorded in 2026.