Duke Energy has signed its second agreement to cleanup coal ash from its February 2014 spill into the Dan River, which flows through Virginia and North Carolina.
Duke signed an initial cleanup agreement with the US Environmental Protection Agency in May 2014. Now, that agreement has expanded to environment and wildlife officials in both states, as well as to the U.S. Fish and Wildlife Service.
Duke, arguably the biggest electricity company in the US, must pay any "reasonable" cost associated with the Feb. 2 spill at its at retired Dan River Steam Station near Eden, which coated 70 miles of the river in gray sludge.
In April 2014, Duke officials said they’d spent $15 million on containing the spill and its aftermath.
Duke must also pay for the ongoing monitoring by government agencies looking to gauge the spill's impact on aquatic life.
Duke reported assets of $114 billion as of 2013.