UPDATE 3:43 p.m.: Firefighters have contained a grass fire near Bishop Peak to one acre. The fire was on the south side of Foothill Boulevard, a half-mile east of O'Connor Road.
Original story: Cal Fire is responding to two brush fires in San Luis Obispo County.
One fire is called the River Fire and is located at River Road and Wellsona Road near Paso Robles. It is limited to one acre.
Firefighters are also responding to a fire on Bishop Peak in San Luis Obispo.