About 90 percent of the estimated 6,000 PG&E customers who lost gas service in eastern Contra Costa County on Sunday have had their service restored, a utility spokeswoman said Wednesday.
PG&E spokeswoman Tamar Sarkissian said the roughly 500 homes where gas service remains out have been contacted several times, but many are vacation homes that have been unoccupied during the outage.
Sarkissian said 6,000 — initially estimated to be 6,200 — PG&E customers in the unincorporated communities of Discovery Bay and Byron lost gas service after a problem was detected at a gas facility Sunday morning.
PG&E's regional gas monitoring center in San Ramon detected a drop in pressure at the facility and customers had their gas service suspended for safety reasons, Sarkissian said.
The gas facility is now operating safely, Sarkissian said. Equipment at one of PG&E's gas regulator stations, which reduces pressure, has been replaced as a precautionary measure.
The exact cause of the problem is still under investigation. Sarkissian said determining what happened could take several weeks.
More than 150 PG&E gas representatives have been in the area since Sunday trying to restore service to the homes of the customers who lost gas during the service disruption, Sarkissian said.
It's been a lengthy process, Sarkissian said, because these workers can only enter homes where residents are present. She said some homes have been visited three times.
Door hangers with instructions and contact information have been left at the homes of customers who were not present when a utility worker attempted a service restoration.