Firefighters contained a grass fire last night that that broke out at an experimental test site of the Lawrence Livermore National Laboratory and burned more than 2,000 acres near the border of Alameda and San Joaquin counties.
The fire was reported at about 4 p.m. Friday above Corral Hollow Road near Site 300, the lab's test site, an Alameda County fire dispatcher said.
The site is located about 15 miles east of the main lab.
The fire, fueled by high winds, moved east from the site and consumed 2,173 acres, according to Lawrence Livermore National Laboratory.
One structure was temporarily threatened, but the fire did not damage any structures or caused any injuries. The blaze was contained at about 7:30 p.m., according to the lab.
The lab declared an operational emergency, meaning aid might have been required from outside agencies but there was no threat hazardous materials would be released.