Energy providers wasted no time last year asking the Trump administration to rescind 2024 federal standards for coal ash disposal.
Five days before President Donald Trump returned for a second term in the White House on Jan. 20, 2025, 10 power suppliers, including Duke Energy, fired off a letter urging Lee Zeldin, Trump’s then-nominee to head the Environmental Protection Agency, “decline to defend these unlawful rules.”
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Now the EPA is proposing to revise federal regulation for coal ash disposal, a move that would relax the Biden-era national standards for inactive, often unlined basins designed to store a sludgy mix of watered-down fly ash and bottom ash.
Here in North Carolina, where comprehensive coal ash legislation was pioneered, proposed changes at the federal level are not expected to affect, at least for the time being, the state’s robust coal ash management law.
Nor would the proposed federal revisions impact the terms of a 2019 settlement agreement between the North Carolina Department of Environmental Quality, Duke Energy, and public interest groups that set closure schedules and monitoring requirements for the power company’s remaining coal ash basins.
“None of that is going to be changed by what EPA is trying to do now at the federal level,” Southern Environmental Law Center Senior Attorney Nick Torrey said.
But Torrey cautioned that sites where coal ash has been removed may still contain residual groundwater contamination.
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“The federal regulations require monitoring and corrective action for that pollution,” he said. “If utilities can get exceptions and exemptions from those things, that’s potentially concerning. Fortunately, we do have a state process as well that’s dealing with groundwater issues, but it was never meant to be a substitute for the federal standards. There’s more vulnerability that coal ash contamination could be allowed to persist. So, we’ll have to be watching that very closely as things go forward.”
Coal ash, referred to in regulation and industry as coal combustion residuals, or CCR, is the byproduct created when coal is burned for electricity. It contains toxic heavy metals such as arsenic, mercury, cadmium, lead and radioactive elements, according to the EPA.
In early February 2014, some 39,000 tons of coal ash slurry discharged from a collapsed pipe at Duke Energy’s retired Dan River Steam Station near Eden into the river. The spill spread as far as 70 miles downstream.
In the fall of that year, the North Carolina General Assembly enacted the North Carolina Coal Ash Management Act, or CAMA.
CAMA (not to be confused with the Coastal Area Management Act) initially set deadlines for Duke Energy to close a group of basins at four of its power plants by certain deadlines.
EPA in 2015 finalized the federal CCR rule under the Obama presidency. The Biden administration strengthened those regulations in 2024.
By that time, DEQ had finalized a basin closure schedule for all 14 of Duke Energy’s facilities in North Carolina. Following litigation and a settlement agreement between community and conservation groups, DEQ and Duke Energy, a 2020 consent order was approved to govern the cleanup process for the remaining sites.
Duke Energy anticipates officially fully excavating the 12th of its 32 coal ash basins in North Carolina by year’s end. Both coal ash impoundments at the Sutton Steam Plant in Wilmington were excavated by July 2019.
Duke Energy spokesperson Bill Norton confirmed in an email earlier this week that the excavation of ash at its W.H. Weatherspoon Power Plant in Lumberton is complete, well ahead of schedule. The company is in the process of working through the basin’s clean closure certification, a process expected to be completed later this year, Norton said in the email.
“Not yet counting Weatherspoon, we have completed excavation at 11 North Carolina basins and are making strong progress at the remaining 20, with well over half of our basin ash safely excavated in the states,” he stated. “All sites remain on or ahead of schedule for basin closure deadlines as shown here.”
Norton said the EPA’s proposed rule changes will not impact Duke Energy’s proposed coal retirement dates.
“We continue making progress on coal retirements while balancing our regulatory approvals and increased load growth – regulators have made clear that replacement generation must be online and serving customers prior to further coal plant retirements,” he said. “While the potential EPA CCR rule changes have no impact on our proposed coal retirement dates, we appreciate prior changes to in the federal regulations that provided flexibility for our coal facilities, enabling us to maximize the value of existing generation by extending the operational life of these assets to help meet load growth at the lowest possible cost to consumers. Retirement dates are subject to regulatory approval.”
Coal-fired operations at Belews Creek Steam Station in Stokes County are expected to be shut down no later than Jan. 1, 2040. The retirement of that plant’s coal combustion operations will mark the end of Duke Energy’s coal-fired power generation in the state.
“We are making tremendous progress on meeting all obligations agreed to years ago in our North Carolina settlement with state regulators and environmental groups – that commitment is unchanged, and state regulators have confirmed our plans are protective of public health and the environment,” Norton said.
Beneficial reuse units at the company’s Buck Combined Cycle Plant in Salisbury, Cape Fear plant in Moncure, and H.F. Lee Energy Complex on the banks of the Neuse River in Goldsboro have been reprocessing coal ash at those sites to make it suitable for use in concrete since 2020, he said.
Katherine Lucas, DEQ’s Division of Waste Management public information officer, stated in an email that the agency “is evaluating the proposed changes to determine any potential impacts on ongoing excavation and remediation activities at Duke Energy facilities.”
“In the absence of an U.S. Environmental Protection Agency-approved state permit program, utilities must comply with both federal and state requirements. North Carolina remains a national leader in coal ash management, both in establishing comprehensive regulations and in the scale and pace of closure and remediation efforts. DEQ believes the state’s regulatory framework is at least as protective as federal requirements and does not anticipate that federal changes would reduce existing environmental and public health protections.”
The EPA is accepting public comments on the proposed rule changes through June 12.
The agency is hosting an online public hearing at 9 a.m. on May 28.
