Amends GS 130A-309.213 regarding the prioritization of coal combustion residuals surface impoundments. Requires the Department of Environmental Quality (DEQ) to classify any coal combustion residuals surface impoundments located at a single site which contain more than 20 million tons of residual combustion residuals as high-risk. Mandates that DEQ require closure of so classified impoundments pursuant to GS 130A-309.214(a)(1) as soon as practicable, but no later than December 31, 2029 (GS 130A-309.214(a)(1) provides for the closure of high-risk impoundments no later than December 31, 2019).