Hazardous waste · violations by year
Hazardous waste violations in Contra Costa County, California in 2026
- 11Handlers cited
- 16Violations on record
- 18Handlers cited in 2025
- 9thAmong California counties that year
Contra Costa County, California has 11 hazardous waste handlers with at least one violation on record during 2026, across 16 separate violations. That compares with 18 in 2025. It is the 9th largest of the 16 California counties with three or more handlers cited that year. Each row below carries the date the violation was recorded, the agency that recorded it and the kind of violation it was.
Other years
Comparable counties in California, 2026
- San Diego County 11
- Kern County 12
- San Mateo County 12
- Ventura County 7
- Riverside County 16
- San Joaquin County 5
- Sacramento County 4
- Solano County 4
Violations recorded in 2026
| Date | Handler | Where | Kind | Recorded by |
|---|---|---|---|---|
| 2026-07-06 | CHEMTRADE LOGISTICS WEST US LLC | Richmond | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | S |
| 2026-06-11 | MARTINEZ REFINING COMPANY LLC | Martinez | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | S |
| 2026-05-12 | KINDER MORGAN LIQUIDS TERMINALS, LLC | Richmond | Standards Applicable to Generators of HW: General | S |
| 2026-04-30 | MECS, INC. - THE AVON PLANT | Martinez | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | S |
| 2026-04-28 | KORTICK MANUFACTURING LLC | Pittsburg | Standards Applicable to Generators of HW: General | S |
| 2026-03-20 | EMCORE CORPORATION | Concord | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | S |
| 2026-02-25 | CORTEVA AGRISCIENCE LLC | Pittsburg | EPA Administered Permit Programs: the HW Permit Program Permit Conditions | S |
| 2026-02-25 | CORTEVA AGRISCIENCE LLC | Pittsburg | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | S |
| 2026-02-25 | CORTEVA AGRISCIENCE LLC | Pittsburg | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | S |
| 2026-02-13 | EMCORE CORPORATION | Concord | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | S |
| 2026-02-05 | WEST COUNTY LANDFILL INC | Richmond | Standards Applicable to Generators of HW: General | S |
| 2026-02-05 | WEST COUNTY LANDFILL INC | Richmond | Standards for Owners and Operators of HW TSDs: Use and Management of Containers | S |
| 2026-02-04 | KAISER PERMANENTE RICHMOND MEDICAL OFFICES 1 | Richmond | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | S |
| 2026-02-04 | CONTRA COSTA COUNTY | Martinez | Standards Applicable to Generators of HW: General | S |
| 2026-02-04 | CONTRA COSTA COUNTY | Martinez | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | S |
| 2026-02-03 | DILLARD ENVIRONMENTAL SERVICES | Byron | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | S |
Figures from EPA’s RCRAInfo download.