RALEIGH, N.C. (AP) — North Carolina regulators said Friday that they have asked a judge to withdraw a proposed settlement that would have allowed Duke Energy to resolve environmental violations by paying a $99,000 fine with no requirement that the $50 billion company clean up its pollution.

The consent order that the state Department of Environment and Natural Resources scuttled was meant to settle violations for groundwater contamination leeching from coal ash dumps near Charlotte and Asheville.