A semi truck crash and fire plus a brush fire has occurred at the Keystone Ranch off Highway 108.
The truck was said to be a wood chip hauler, and debris was reported scattered in the roadway.
Fire crews and air tankers are on the scene, and drivers should use extreme caution in the area.
CHP dispatchers say accident victims received only minor injuries, and no one was transported to the hospital.
Approximately 100 acres have been burned so far, say officials, and a total of three helicopters and three air tankers were ordered to the scene, in addition to ground crews.
As many as three vehicles were involved in the wreck, but the official details have not yet been released by the California Highway Patrol.
Today is the first day the Columbia CDF Air Attack Base was in full operation and fully-staffed.