Flaring occurred at the Martinez refinery Wednesday evening, the facility reported on its website.
"All appropriate agencies have been notified. We apologize for any inconvenience to our neighbors," the Martinez Refining Company said in a statement. "Flares are an essential part of a refinery’s integrated, engineered safety systems designed to safely manage excess combustible gases by burning them off efficiently and effectively."
The incident came after flaring occurred Monday at the Chevron refinery in Richmond following a partial outage at the facility.
Meanwhile, two Martinez residents on Wednesday announced filing a proposed class action lawsuit against the Martinez Refining Company, alleging the refinery has created a "public nuisance" by releasing chemicals into the surrounding community.
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