Here is the latest Southern California news from The Associated Press

LOS ANGELES (AP) — An urban oil field blamed for causing chronic respiratory illnesses and nosebleeds in a South Los Angeles neighborhood will be modified to prevent leaks and decrease pollution. The Los Angeles Times reported yesterday that Allenco Energy Co. plans to upgrade its air pollution control systems and make other changes. The company voluntarily suspended operations Nov. 22 at Sen. Barbara Boxer's request and reports of ailments have dropped.

SAN DIEGO (AP) — California regulators are failing to collect half the fines levied on assisted living homes that don't properly care for elderly residents. U-T San Diego reported yesterday that the California Department of Social Services has collected only half of the $2.9 million in penalties since July 2007, partly because there's no penalty for late payment. State officials say violators often close and move away.

LOS ANGELES (AP) — California health insurance exchange operators are focused on drawing "young invincibles." Government-funded educators are becoming regular visitors at California college campuses to pitch students on signing up for health insurance. The Los Angeles Times reported yesterday young adults are seen as vital to making the Affordable Care Act a success.

LOS ANGELES (AP) — A Disney princess wasn't enough of a match for a hobbit. According to studio estimates yesterday, Warner Bros. "Hobbit: The Desolation of Smaug" was No. 1 at the weekend box office with $73.7 million. Disney's animated tale "Frozen" came in at No. 2 with $22.2 in its third weekend, bringing its overall domestic ticket total to $164.4 million.