Cal Fire investigators are looking into multiple potential causes for the Pickett Fire, including whether a contractor accidentally disposed of smoldering ashes at a Calistoga vineyard last week.
The ashes are among several possible causes that the agency is probing as part of its investigation into what sparked the Wine Country blaze last week, Shawn Zimmermaker, Cal Fire deputy chief of law enforcement and fire prevention for the Northern Region, told the Chronicle on Thursday.
“The team is looking into that and evaluating it as a potential ignition source, but they are also looking at all the other potential ignition sources,” Zimmermaker said. “We have conducted a number of interviews and we have looked at a variety of different causes. We have not made a final determination yet.”…