On Monday, the North Carolina Department of Environmental Quality issued determinations with respect to six Duke Energy coal plants, 
requiring that Duke close coal combustion residual surface impoundments at the plants by excavating and removing all coal ash from the impoundments. DEQ did so notwithstanding that the impoundments all received “low-risk” classifications by DEQ.
According to Greenwire (subscription required), the directives will increase the cost of complying with CCR requirements at these plants by $4B-$5B.… More