Residents in Seaside Heights, Ortley, Ortley Beach, and Lavalette reported hissing noises coming from gas lines.
Many residents are living in fear protecting what little they have left from the possibility of an explosion. In Brick Township, fire companies were standing by as officials awaited utility workers who would burn off and turn off the gas. While some officials downplayed the risk from fire, others gave a different estimate of the gas risk.
"We have one main gas line that goes over to the island. We are trying to cut the main line to cut it for the [barrier] islands, said Rich Peterson of the county's Office of Emergency Management.
Overall says Peterson, more than 500 have been rescued from the barrier islands as of Wednesday.
"Our biggest concern is we want to get everyone out of the barrier islands. People are still there. We've gotten 500 people from two barrier islands. We have crews out there, zodiac boats, National Guard Blackhawk helicopters," he said.
President Obama and New Jersey Gov. Chris Christie toured the devastated Jersey shore Wednesday and Secretary of Homeland Security Janet Napolitano will travel to Connecticut and New York today to meet with state and local officials and view ongoing response and recovery efforts to superstorm Sandy.
ABC News' Katherine Hinman and The Associated Press contributed to this report.