FILE- In this Feb. 5, 2014 file photo, a pipe from the Dan River Power Plant where coal ash spilled is seen along the Dan River in Eden, N.C. Records show engineers working for Duke Energy warned the company as early as 1986 that a stormwater pipe running under a North Carolina coal ash dump was made of corrugated metal and needed to be monitored for leaks. (AP Photo/Gerry Broome, File)
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