SAN DIEGO (CBS/AP) -- CBS News has learned a task force of agencies, including the FBI, ATF, the Orange County Fire Authority and the California Department of Forestry will announce shortly that the massive Santiago Canyon Fire - which has caused an estimated $10 million in damage - is being officially declared an arson, and a $50,000 reward is being offered to find the arsonist.
Investigators have identified two separate "points of origin" where they believe the fire was set, CBS News has learned. FBI agents secured the scene to "maintain its integrity."
The Santiago Fire has burned about 19,200 acres east of Irvine, officials said, and it is around 30 percent contained. Six homes and eight outbuildings have been destroyed, with another eight homes and 12 outbuildings damaged. Four firefighters have been injured fighting the blaze and about 3,000 people evacuated.
The devastating wildfires in Southern California have caused at least $1 billion in damage in San Diego County alone, officials said Wednesday, as easing wind gave firefighters hope that they begin to gain ground against the flames.
Other blazes were believed to have been started by downed power lines and a car fire.
The fires, now in their fourth day, have destroyed 1,500 homes and caused nearly 1 million people to flee - the largest evacuation in state history. At least 1,200 of the damaged homes were in San Diego County, and officials believe that number will rise.
"Clearly, this is going to be a $1 billion or more disaster," Ron Lane, San Diego County's director of emergency services, told reporters during a news conference.
The announcement of San Diego's staggering losses came as President Bush signed a major disaster declaration for California in the wake of the wildfires that have burned about 426,000 acres, or about 665 square miles.
The declaration puts in motion long-term federal recovery programs to help state and local governments, families, individuals and certain nonprofit organizations recover.
"Americans all across this land care deeply about them," the president said after a Cabinet meeting convened to coordinate federal relief efforts. "We're concerned about their safety. We're concerned about their property."
With nearly 1 million people ordered out, it marks one of the largest evacuations in U.S. history, reports CBS' The Early Show co-anchor Harry Smith.
The Bush administration's disaster assistance chief promised no repeat of the Hurricane Katrina experience Wednesday, saying "this is a new FEMA" as Washington weighed options to help California wildfire victims.
"We're going to make sure this operation runs as smoothly as possible given the size of this disaster," said head of the Federal Emergency Management Agency David Paulison, when asked if people who lost homes can expect a more aggressive response than when Hurricane Katrina struck the Gulf Coast in late summer 2005.
The fierce Santa Ana wind that has stoked the explosive blazes had started to moderate slightly across the region Wednesday although stiff gusts continued to blow through some canyon areas. Forecasters said the wind eventually would be followed by cooling sea breezes.
Wind was reported blowing at a sustained speed of 21 to 36 mph in some areas Wednesday, considerably less than the gusts of up to 100 mph earlier in the week.
The shift could allow for a greater aerial assault and help firefighters beat back the most destructive blazes, said Homeland Security Secretary Michael Chertoff.
Crews were anticipating an injection of additional firefighters and equipment from other states, mostly throughout the West. Frustration over the firefighting effort began to emerge Tuesday when a fire official said not enough had been done to protect homes.
Orange County Fire Chief Chip Prather told reporters that firefighters' lives were threatened because too few crews were on the ground. He said a quick deployment of aircraft could have corralled a massive blaze near Irvine.
"It is an absolute fact: Had we had more air resources, we would have been able to control this fire," he said.
Twenty-one firefighters and at least 24 others have been injured. One person was killed by the flames, and the San Diego medical examiner's officer listed four other deaths as connected to the blazes.
The state's top firefighter said Prather misstated the availability of firefighters and equipment. Eight of the state's nine water-dumping helicopters were in Southern California by Sunday, when the first fires began, along with 13 air tankers, said Ruben Grijalva, director of the California Department of Forestry and Fire Protection.
Grijalva said the fires, spread by wind that at times topped 100 mph, would have overwhelmed most efforts to fight them.
Gov. Arnold Schwarzenegger dismissed the criticism when questioned by an ABC News reporter, and praised the rapid deployment of fire crews and equipment across a region from north of Los Angeles to the Mexican border.
"Anyone that is complaining about the planes just wants to complain because there's a bunch of nonsense," he said. "The fact is that we could have all the planes in the world here - we have 90 aircraft here and six that we got especially from the federal government - and they can't fly because of the wind situation."
Thousands of people packed emergency shelters, where many had an agonizing wait to find out whether their homes had survived.
"I'm ready to go, but at the same time, I don't want to go up there and be surprised," said Mary Busch, 41, who did not know whether her home in Ramona, in San Diego County, was still standing. She has lived at the evacuation center at Qualcomm Stadium since Monday, sleeping in her SUV with her 11- and 8-year-old sons.
Others were eager to return to houses they were confident had survived.
"I called my home and my answering machine still works, so that's how I know we're OK," said Rancho Bernardo resident Fuli Du, who packed his belongings Wednesday preparing to leave Qualcomm.
He spent his 41st birthday Tuesday at the stadium, where he has been living with his wife and two young sons.
Thousands of people packed evacuation centers, where many had an agonizing wait to find out whether their homes had survived. At the Del Mar Fairgrounds in northern San Diego County, which was converted into a shelter, many stared at television sets blaring reports from the fire lines and damaged neighborhoods.
Paulison was optimistic about the conditions at Qualcomm. "I was just there yesterday, last night actually," he told The Early Show anchor Hannah Storm. "Things are under control. There's plenty of food, plenty of water. There's lots of security."
During Katrina, New Orleans' attempt to shelter people in a sports stadium went terribly wrong. The Superdome turned into a small city of violence, filth and chaos. But even with an estimated 10,000 people sleeping in Qualcomm, the stadium is getting high marks, reports CBS Evening News anchor Katie Couric.
More evacuation orders were issued Wednesday. Residents of the San Diego County communities of Fallbrook and Julian, an area devastated by a 2003 wildfire, were ordered out of their homes. Officials also were evacuating De Luz, an unincorporated community north of Camp Pendleton that was being threatened by a wildfire on the Marine base. The fire also closed Interstate 5 and the Metrolink commuter rail, snagging the morning commute.
However, residents were allowed to return to some areas of San Diego County including Carlsbad, Chula Vista, Del Mar, Encinitas and Solana Beach.
"There are some hot spots and issues there, but we wouldn't be letting people go back if it weren't safe," county spokeswoman Lesley Kirk said.
The city of San Diego was assessing whether to allow people to return to their homes in Rancho Bernardo, one of the hardest-hit areas, Mayor Sanders said.
So far, the fires have inflicted the worst damage in San Diego County, where five blazes continued to burn. The largest fire had charred 196,420 acres - about 300 square miles - from Witch Creek to Rancho Santa Fe, destroying 650 homes, businesses and other buildings. Other hard-hit areas included San Bernardino County, where hundreds of homes burned in the mountain resort communities.
The entire Lake Arrowhead area has been evacuated, reports CBS News correspondent Bill Whitaker. Officially, 300 houses that have been destroyed, but people fear that once they get back into these woods and take a full count, that that number will go much higher.
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