Curators of recurring contemporary survey exhibitions face a perpetual dilemma: How does one fend off biennial ennui? This was clearly the impetus for Dan Cameron’s retooling of the Orange County Museum of Art’s former California Biennial, which had been a state-bound overview with an emphasis on emerging artists. Working in a crowded field that now includes the Hammer Museum’s “Made in L.A.” biennial, as well as the J. Paul Getty Museum’s “Pacific Standard Time” initiative, Cameron carved out a new mandate for ocma, mounting a show that argues for California as a place embedded along the Pacific