UPDATE: Local Police have said that this is a false alarm and there is no emergency at the Shell Refinery.
In what can only be the strangest and most worrisome coincidence, the Shell refinery in Martinez has just issued an Immediate-Severe-Likely public "Shelter-in-Place" emergency alert [2]:
RESIDENTS IN MARTINEZ. ARE ADVISED TO SHELTER IN PLACE. GO INSIDE. CLOSE ALL WINDOWS AND DOORS. TURN OFF ALL HEATERS. AIR CONDITIONERS AND FANS. IF NOT USING THE FIREPLACE. CLOSE FIREPLACE DAMPERS AND VENTS. AND COVER CRACKS AROUND DOORS AND WINDOWS WITH TAPE OR DAMPED TOWELS. MEDIA NEWS NETWORKS WILL CONTINUE TO CARRY UPDATED EMERGENCY INFORMATION. STAY OFF THE TELEPHONE UNLESS YOU HAVE A LIFE THREATENING EMERGENCY.