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FILE - In this Dec. 5, 2012 file photo, a sewer cover is seen along the shore of Lake Champlain in Burlington, Vt. In a hearing Wednesday, Feb. 12, 2014, Vermont Environmental Conservation Commissioner David Mears outlined a proposal where the state would enhance water quality rules to limit non-wastewater runoff into Lake Champlain. (AP Photo/Toby Talbot, File)

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