Eleven cars derailed yesterday in the 96-car Union Pacific train and at least one ignited, releasing oil alongside tracks that parallel the region's treasured Columbia River, said Aaron Hunt, a spokesman for the railroad.
All the cars were carrying Bakken oil, a type of oil that is more flammable because it has a higher gas content and vapor pressure and lower flash point than other varieties.
"Moving oil by rail constantly puts our communities and environment at risk," said Jared Margolis, an attorney at the Center for Biological Diversity in Eugene, Oregon.
It wasn't immediately clear if oil had seeped into the river or what had caused the derailment. Hunt did not know how fast the train was traveling at the time, but witnesses said it was going slowly as it passed the town of Mosier, Oregon, about 70 miles east of Portland.
Officials in Mosier closed about 23 miles of Interstate 84 and evacuated a half-mile radius around the spill, including 200 school children who were picked up by their parents. No injuries were reported.
