Six drivers are facing DUI charges after being arrested in Petaluma. Four Petaluma police officers on “DUI Saturation Patrol” made the arrests in a seven-and-a-half-hour span between Saturday night and early Sunday morning. Police say three of the drivers had a blood-alcohol level of more than twice the legal limit. Another suspect, who is 20-years-old, was allegedly drinking an alcoholic beverage while driving.