RALEIGH, N.C. (AP) -- Internal emails between staff at North Carolina's environmental agency suggest state regulators were coordinating with Duke Energy before intervening in efforts by citizens groups trying to sue the company over groundwater pollution leeching from its coal ash dumps.
The emails were provided Thursday to The Associated Press by the Southern Environmental Law Center, which had filed notice in January 2013 of its intent to sue the nation's largest electricity company under the Clean Water Act.
Within days, the emails show a Duke lobbyist contacted the N.C. Department of Environment and Natural Resources to set up a meeting. The emails suggest the company and regulators were in frequent contact, with a lawyer for Duke even advising the state on legal strategy at one point.
At the time, lawyers for the environmental law center were worried that Duke and state regulators would work out a deal without any input from the citizens groups. They told the state that the groups couldn't legally be blocked from participating.
But in an April 30, 2013 email, Duke lawyer Charles Case tried to find a case law that could be used by the state's lawyers to convince a judge otherwise.
The email with a copy of an old case attached was forwarded by Special Deputy Attorney General Kathy Cooper to Lacy Presnell, the top lawyer at the state environmental agency, on May 15. Cooper had been assigned to represent the state in the lawsuit.
"Mr. Presnell asked during our meeting for an example of participation by a intervenor on a non-party basis," Case wrote, adding that he looked forward to speaking with the state officials in an upcoming meeting.
On July 3, a transcript shows Cooper went before Wake County Judge Paul Ridgeway and argued that the citizens groups should be excluded from the legal proceedings. Ridgeway allowed the groups to be heard.
"They tried to keep us from being full parties in the case," said Frank Holleman, a senior attorney for the law center. "Duke is the lawbreaker. DENR is the law enforcement agency. They are supposed to be protecting the people. Instead, they are working with the lawbreaker to find a way to limit the participation of the citizens groups in the law enforcement proceedings in the way that will benefit the lawbreaker. It's astonishing."
The agency used its authority to intervene in the citizen lawsuit, quickly negotiating a proposal where the $50 billion company would pay a $99,100 fine to settle environmental violations but be under no requirement to actually clean up its pollution.
Environmentalists have derided the proposal as a "sweetheart deal" by compliant state regulators to shield Duke from far harsher and more expensive penalties the company would have likely faced had the citizens groups been allowed to move forward in federal court.
That proposed settlement was tabled last month after a massive spill from a Duke dump in Eden that coated 70 miles of the Dan River in toxic gray sludge. Coal ash contains a witch's brew of dangerous chemicals, including arsenic, lead, mercury and selenium.
Duke spokeswoman Paige Sheehan said Thursday that the company wouldn't comment on the "content of any specific emails."
In a letter this week to state regulators and Gov. Pat McCrory, Duke President Lynn Good said it would take the company at least two years to clean up the Eden dump. She said the company will move its remaining ash away from the river to either a lined landfill or a "lined structural fill solution."
Good said the company will be responsible for the disaster, though it is not clear how the miles of contaminated river bottom might be restored or how long that might take. Public health officials have advised people to avoid contact with the water in the Dan and not to eat the fish.
Good said the company will also move ash dumps in the Asheville and Charlotte area, and are looking at options for the Sutton pits near Wilmington.
She said the company will continue to work on long-range plans for 11 other sites where the company has leaky unlined ash pits.
But state environmental Secretary John Skvarla on Thursday called the plan inadequate, saying he wanted more answers from Duke.
Federal prosecutors have launched a criminal investigation in the wake of the spill, issuing at least 23 grand jury subpoenas to Duke executives and state officials.
The first batch of subpoenas was issued the day after an AP story raised questions last month about whether North Carolina regulators had helped shield Duke from a coalition of environmental groups that wanted to sue under the U.S. Clean Water Act to force the company to clean up its coal ash pollution. Among the items subpoenaed are all communications between the state agency and Duke regarding the lawsuits.