Oregon district surprised to find huge oil tank under old elementary school

From The East Oregonian: Workers tearing down the former West Park Elementary School in Hermiston, Ore., have dug up a surprise: an enormous tank half-full of toxic sludge. Evidently used for storage when the school’s boiler ran on oil, the tank was a mystery to the school district. Subcontractors knew something lay under the school’s Seventh Street parking, but the tank’s size--about 10,000 gallons, or the size of an oil truck--and its contents were an unpleasant discovery. The school district may have to pay up to $125,000 to handle the problem.