This March 9, 2010 file photo shows a tanker truck passing the Chevron oil refinery in Richmond, Calif. On Weds., Nov. 14, 2012.
This March 9, 2010 file photo shows a tanker truck passing the Chevron oil refinery in Richmond, Calif. On Weds., Nov. 14, 2012. Paul Sakuma AP
This March 9, 2010 file photo shows a tanker truck passing the Chevron oil refinery in Richmond, Calif. On Weds., Nov. 14, 2012. Paul Sakuma AP