Duke Energy is publishing federally mandated maps showing what could happen to neighboring properties if a coal-ash pit burst.
Duke Energy says the move is an attempt to use "fear and the courts to upend public policy."
Duke Energy is disposing coal ash from some of its Gallagher Station ponds into a landfill. Other ponds will be closed in place on the property.
Duke Energy plans to remove an estimated 3.6 million tons of coal ash from two of the Wabash River Generating Station's ash ponds in Terre Haute.
The briefing in Terre Haute will detail Duke's proposed plans for the coal ash that's stored at its former Wabash River Generating Station.
Senator Joe Donnelly will be voting on a number of measures that concern air and water pollution in the coming months.
The U.S. Environmental Protection Agency will set national standards for the regulation of coal ash.
Indiana Power And Light Company says its dependence on coal will fall to 44 percent by 2017 as it switches to natural gas.
The Hoosier Environmental Council and other organizations say the byproduct of coal burning is a serious threat to the public's health.
Why environmental officials say their hands are tied by the lack of federal guidelines for coal ash and a look into Indiana's Tuesday primary election.