EPA Air · violations by county and year
High-priority air violations in Contra Costa County, California, 2026
- 106Violations
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity. Each row below is one violation recorded against a source in Contra Costa 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 Contra Costa County facility page.
Contra Costa County, California, 2026
High-priority air violations in Contra Costa County, other years
High-priority air violations recorded in Contra Costa County, California, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-01-12 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-08 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-05 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | Earliest FRV determination | Local |
| 2026-01-05 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-02 | WEST CONTRA COSTA SANITARY LANDFILL — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-02 | WEST CONTRA COSTA SANITARY LANDFILL — high-priority violation on file | HPV day-zero determination | Local |
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Dates as filed by the agency that recorded the violation. Figures from EPA’s ICIS-AIR download.