SANTA ANA – Firefighters attacking the Santiago fire today were blocking the blaze from crossing a mountain ridge into Riverside County, and fire officials said they don’t expect the fire to be fully contained until Nov. 2. The fire, which was blamed on arson, has injured eight firefighters. Now in its eighth day, the fire has blackened 28,012 acres of foothills, canyons and mountains in the northeastern corner of Orange County. Firefighters have the blaze about 65 percent contained, according to Cal Fire. Some people under mandatory evacuations were allowed to check on their homes yesterday and collect medicine and other personal items. Mandatory evacuations are in place for the canyon areas of Santiago Canyon Road between Silverado Canyon Road and Live Oak Canyon Road, including the Santiago Estates area and Jackson Ranch Road. Areas along Live Oak Canyon Road through the Trabuco Canyon area, including O’Neill Regional Park, to Trabuco Creek Road are also included in the mandatory evacuation. AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREGame Center: Chargers at Kansas City Chiefs, Sunday, 10 a.m.The Santiago fire has destroyed 15 homes and nine outbuildings, and 8 residential structures and 12 outbuildings were damaged. There are 1,732 fire personnel assigned to the fire, which has caused an estimated $7.9 million. Slack air helped the firefighters yesterday. Firefighters worried that coastal winds could blow the fire downhill into the Corona area if it crossed the ridge, which also marks the line between Orange and Riverside counties. Hand crews and bulldozers have carved a pair of parallel fire breaks both on the ridge and at the fire’s northeast edge, generally a mile southwest of the ridge. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!