The Energy Department has proposed a 17-year delay in building a complex waste treatment plant at its radioactively contaminated Hanford site in Washington state, pushing back the full start-up for processing nuclear bomb waste to 2039. The department submitted the 29-page plan in federal court as part of a suit to amend an agreement with the state that requires the plant to start operating in 2022. A series of serious technical questions about the plant's design have caused one delay after another. Two of the major facilities at the cleanup site, which resembles a small industrial city, are under a construction halt ordered in 2013 by then-Energy Secretary Steven Chu.
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