Environment

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FILE - In this Feb. 19, 2013 file photo, Sen. Ron Wyden, D-Ore., center, tours the Hanford Nuclear Reservation in Richland, Wash. Documents obtained by the Associated Press show that there are “significant construction flaws” in some newer, double-walled storage tanks at the nuclear waste complex. In a letter to Energy Secretary Ernest Moniz Friday, Feb. 28, 2014, Wyden called for better management of Hanford by the Dept. of Energy. (AP Photo/The Oregonian, Jamie Francis, file)