I hope this doesn't end up being another Dan River type incident. Unfortunately, the Sutton Power station ash ponds are significantly (5x to 6x) larger than the Dan River ash ponds according to NC DEQ Inventory of Duke Energy Coal Ash Ponds and Wilmington is significantly more populated than Eden NC, the site of the Dan River breach. 

There are several stories out there... NC river swirls with gray muck near flooded coal ash dump, etc., just google it. 

Location wise, the dump site is here: https://files.nc.gov/ncdeq/Water%20Quality/NPDES%20Coal%20Ash/Coal%20Ash%20Pond%20Maps/Sutton.pdf