Mira Costa faces a tough test Saturday when it faces Valencia in a match that will determine first place in the Southern Pacific Girls’ IBVL (Interscholastic Beach Volleyball League) sanctioned by the AAU.The winner of the match, to be played at Annenberg Community Beach House in Santa Monica, will be in the driver’s seat to claim the inaugural championship as both teams enter the third week of competition with identical 3-0 records.After an opening-round win against Palos Verdes, Mi






