The Air District has reached a settlement with Tesoro Refining & Marketing Company that will significantly enhance air monitoring data transparency, providing more information about air pollutants around its refinery in unincorporated Contra Costa County, near Martinez. The agreement requires Tesoro to take new data access and community engagement actions beyond those required by regulation or permit.

The Air District has issued Crown Hill Materials, a concrete facility in Vallejo, a Notice of Violation for operating a concrete batch plant without the required air quality permit. The Air District has also issued a cease-and-desist letter directing the company to stop operating the unpermitted plant.

The Air District has filed a lawsuit against Acme Fill Corp. for illegally emitting high levels of methane and other organic compounds from its landfill in Martinez. The complaint, filed today in Contra Costa County Superior Court, seeks monetary penalties for multiple violations of state and local air quality regulations following a compliance inspection conducted by the Air District on August 24, 2023.