Regulators have found elevated health risks near a refinery. The Bay Area Air District released a preliminary health risk assessment that identified cancer risks from air pollution.

Chevron Richmond responded to the claims, stating that the assessment used outdated information and inaccurate assumptions. The company pushed back against the findings, which were released on Tuesday.

Further details about the health risk assessment and Chevron Richmond's response are available from the source. The assessment's findings have sparked a reaction from the refinery, which disputes the methodology used.