An inspection contractor found a chemical tank at a Washington state paper mill "not fit for continued service" 10 months before it failed in May.
The fire at the Martinez Refining Company burned for days, prompting a shelter-in place advisory for nearby neighborhoods.
The Bay Area Air Quality Management District issued an air quality advisory on Saturday after a Chevron Refinery in Richmond started flaring up.
Just a day after a fire at the Martinez refinery injured a worker, the company moved forward with restarting operations for the first time since a separate fire on Feb. 1 burned for three days and also injured several workers.
The Martinez Refining Company said at around 7:50 p.m., a portable air compressor caught on fire while it was being refueled by a worker. The company says the fire has since been extinguished.
It's been more than a month since the massive fire at the Martinez Refining Company, and we're learning more about how it sparked.