Personnel from Ross Valley include Capt. Scott Porter, engineer Michael Gutierrez, firefighter Jesse Olivatti and engineer Justin Hanson. There were four separate wildfires burning in San Diego County on Friday, spanning nearly 8,000 acres, forcing evacuations and road closures throughout the county, according to Cal Fire and local fire departments. The most serious of the incidents is the Cocos Fire, which started Wednesday evening and is burning 3,018 acres in and around San Marcos. It was only 10 percent contained as of Friday morning, according to Cal Fire.