A half-acre fire set at the Cloverdale River Park on Tuesday has resulted in the arrest of a Cloverdale man for arson. When fire crews arrived, they observed 51-year-old Joe Ferreira walking away from the scene. Ferreira was detained by a Cloverdale police officer and the fire was contained. Evidence in the area linked Ferreira to the blaze. He was arrested and booked into the Sonoma Main Adult Facility on $40,000 bail.