LOS ANGELES (AP) – Researchers say nearly 200,000 people live, work or pass through California’s volcanic hazard zones on a daily basis, and there’s a 16 percent probability of an eruption in the next 30 years. A study released Monday by the U.S. Geological Survey attempts to characterize the exposure of population, infrastructure, resources and the economy from an eruption in any of eight areas statewide that are designated as having moderate, high or very high threat. Scientist-in-charge Magaret Mangan of the California Volcano Observatory says the report is not a doomsday scenario. Rather, she says, it should be a springboard for launching studies of the vulnerabilities of specific sites. The areas includes several North State Volcanoes. The study lists Mount Shasta, Medicine Lake Volcano and Lassen Peak where the state’s last eruption occurred between 1914 and 1917.