A mower blade may have hit a rock and caused a spark, Chief Ghiorso said. "We don't like them doing that at this time of day," he said, adding that the fire marshal is investigating the scene.
The fire was first reported as a column of smoke near Woodside and Bear Gulch roads by firefighters returning to the main fire station on Woodside Road. A subsequent call by a resident reported a structure fire nearby on Mountain Wood Lane, which elicited a "full response" of vehicles and personnel appropriate to such a fire, the chief said.
At one point, five or six firefighting vehicles, an ambulance and three battalion chiefs were assigned, but after a few minutes two of the vehicles were enough to "mop this up," according to an audio report from the website FireDispatch.com.