Firefighters work in a neighborhood following a massive gas line explosion in San Bruno, Calif., Friday, Sept. 10, 2010. Fire crews tried to douse the remnants of an enormous blaze and account for the residents of dozens of homes Friday after a gas line ruptured and an explosion ripped through in a neighborhood near San Francisco. (AP Photo/Eric Risberg) (AP Photo/Eric Risberg)
Workers and officials look over a crater caused by a massive explosion in a mostly residential neighborhood in San Bruno, Calif., Friday, Sept. 10, 2010. At least 50 people were hurt, with three suffering critical burns in the explosion Thursday evening that left a giant crater and sent flames tearing through the middle-class neighborhood of 1960s-era homes in hills overlooking San Francisco, the bay and the airport. (AP Photo/Jeff Chiu) (AP Photo/Jeff Chiu)
Aerial view of damage caused by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sept. 10, 2010. Fire crews tried to douse the remnants of an enormous blaze and account for the residents of dozens of homes Friday after a gas line ruptured and an explosion ripped through in a neighborhood near San Francisco. (AP Photo/Jeff Chiu) (AP Photo/Jeff Chiu)
Aerial view of damage caused by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sept. 10, 2010. Fire crews tried to douse the remnants of an enormous blaze and account for the residents of dozens of homes Friday after a gas line ruptured and an explosion ripped through in a neighborhood near San Francisco. (AP Photo/Jeff Chiu) (AP Photo/Jeff Chiu)
Firemen work on the remains of a home damaged by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sept. 10, 2010. Fire crews tried to douse the remnants of an enormous blaze and account for the residents of dozens of homes Friday after a gas line ruptured and an explosion ripped through in a neighborhood near San Francisco. (AP Photo/Jeff Chiu) (AP Photo/Jeff Chiu)
This photo was taken on Sunday, Sept. 12, 2010, of residents preparing to re-enter their neighborhood. (KGO Photographer/Cathy Cavey) (KGO Photographer/Cathy Cavey)
This photo was taken on Sunday, Sept. 12, 2010, of the snacks PG&E provided for evacuees. (KGO Photographer/Cathy Cavey) (KGO Photographer/Cathy Cavey)
This photo was taken on Sunday, Sept. 12, 2010. This is the local rec center where assistance and services have been provided to the residents. (KGO Photographer/Cathy Cavey) (KGO Photographer/Cathy Cavey)
This photo was taken on Sunday, Sept. 12, 2010. These are some of the messages left for the victims at the local rec center. (KGO Photographer/Cathy Cavey) (KGO Photographer/Cathy Cavey)
This photo was taken on Sunday, Sept. 12, 2010. These are some of the messages left for the victims at the local rec center. (KGO Photographer/Cathy Cavey) (KGO Photographer/Cathy Cavey)
This photo was taken on Sunday, Sept. 12, 2010 of the neighborhood before residents were allowed to enter. (KGO Photographer/Cathy Cavey) (KGO Photographer/Cathy Cavey)