The week started out ominously when a unit of the Chevron refinery in Richmond caught on fire and spewed dark smoke high into the air. Residents immediately around the fire were told to shelter in place. Berkeley was indirectly given a warning as well when Oakland police told hill dwellers to stay inside and close all the windows. The fire shut down much of the Chevron facility, immediately causing a spike in gas prices. One Berkeley gas station owner got four price hikes in a 24-hour period.