RALEIGH, N.C. (AP) — Duke Energy has completed removal of large pockets of coal ash from the Dan River months after a massive spill at a North Carolina power plant, federal environmental officials said Thursday.

The U.S. Environmental Protection Agency’s on-scene coordinator, Myles Bartos, said Duke had dredged up about 2,500 tons of ash and contaminated sediment that settled against a dam in Danville, Virginia. Another 500 tons was recovered from other pockets in the river and settling tanks at two municipal water treatment plants in Virginia.