FILE - In this July 14, 2017 file photo, The Tennessee Valley Authority's coal-burning Allen Fossil Plant in Memphis, Tenn. The Tennessee Valley Authority is considering moving toxin-laden coal ash from a retired plant in Memphis to one of two off-site landfills as it begins preparing for the $500 billion removal project, the federal utility said Monday, Nov. 16, 2020. (AP Photo/Adrian Sainz, File)
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