"Ammonia Leak at Calif. Nuke Plant Prompts Alert"
"IRVINE, Calif. -- A non-radioactive ammonia leak at a Southern California nuclear plant prompted an emergency alert and precautionary evacuation of nearby workers before it was contained Tuesday, authorities said.
Workers stopped the leak by 5 p.m., about two hours after it was detected in a storage tank in the water purification system of Unit 3 at San Onofre Nuclear Generating Station, said Todd Adler, the plant's engineering manager.