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 |
|---|---|---|---|
| 2026-07-30 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-30 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-30 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-30 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-30 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-27 | WEST CONTRA COSTA SANITARY LANDFILL — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-23 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-23 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-23 | WEST CONTRA COSTA SANITARY LANDFILL — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-23 | WEST CONTRA COSTA SANITARY LANDFILL — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-13 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-07-08 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | Earliest FRV determination | Local |
| 2026-07-07 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | Earliest FRV determination | Local |
| 2026-07-07 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | Earliest FRV determination | Local |
| 2026-06-12 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-06-12 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-27 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-26 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-26 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-12 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-12 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-12 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-12 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-11 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-08 | TESORO REFINING & MARKETING COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | HENKEL CORPORATION-AEROSPACE GROUP — high-priority violation on file | Earliest FRV determination | Local |
| 2026-05-05 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-04 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-05-04 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-28 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-28 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-28 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-28 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-23 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-20 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-20 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-16 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-16 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-16 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-16 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-16 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-16 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-16 | TESORO REFINING & MARKETING COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-15 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-15 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-15 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-14 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-14 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-14 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-14 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-14 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-13 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-09 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-08 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-08 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-06 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-06 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-04-02 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-10 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-03 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-03 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-03 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-03 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-03 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-03 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-03 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-03 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-03 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-03-03 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-02-19 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-02-18 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-02-10 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-02-09 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-02-09 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-02-09 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-02-09 | PHILLIPS 66 COMPANY - SAN FRANCISCO REFINERY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-02-04 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-02-02 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-29 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-29 | MARTINEZ REFINING COMPANY LLC (PREVIOUSLY SHELL OIL PRODUCTS US, MARTINEZ REF.) — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-23 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-23 | CHEVRON PRODUCTS COMPANY — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-15 | WEST CONTRA COSTA SANITARY LANDFILL — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-15 | WEST CONTRA COSTA SANITARY LANDFILL — high-priority violation on file | HPV day-zero determination | Local |
| 2026-01-14 | CHEVRON PRODUCTS COMPANY — 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.