The U.S. Department of Justice, the U.S. Environmental Protection Agency and the Mississippi Department of Environmental Quality reached a settlement with Chevron U.S.A. that requires safety improvements at all of its petroleum refineries across the United States, resolving claims that the company violated provisions of the Clean Air Act aimed at preventing accidental releases of hazardous chemicals, as well as claims under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and the Emergency Planning and Community Right-to-Know Act. Chevron agreed to spend approximately $150 million on safety improvements at all of its domestic refineries, pay a $2.95 million civil penalty, and implement supplemental environmental projects worth at least $10 million in the communities surrounding refineries in California, Mississippi, Utah, and Hawaii.