    —_—_——_—————————_————————._  sentence 4. The equivalent of 75,000 55-gallon barrels  ‘of waste thought to contain transuranic waste are  stored underground at Hanford.    Sentence 2 The equivalent of 75,000 55-gallon  barrels of transuranic and low-level radioactive waste  some of it mixed with hazardous chemicals , is buried  at Hanford