The Tennessee Valley Authority is moving forward with plans to expand the boundaries of an onsite dry storage landfill for coal combustion residuals at Kingston Fossil Plant near Harriman, Tennessee.
TVA currently operates a permitted state-of-the-art dry landfill on TVA property at Kingston for coal ash and gypsum, which is produced by the air emissions controls at the plant.
The landfill is designed for two phases, the first of which has been in operation since 2015. TVA is proposing to expand the boundary of the construction support area for the onsite gypsum landfill by an additional 21 acres to prepare for the next phase of the landfill. This additional land would be used as a staging area for equipment and as a source of clay borrow material, which will be used in the construction of a new phase of the landfill.
The Kingston Fossil Plant itself has been in operation since 1955. Its nine coal-fired units have a total capacity of about 1,400 MW, according to the TVA.
In 2008, a dike at the Kingston coal ash pond collapsed and is considered by some to have caused the worst coal ash disaster in U.S. history. Some 1.1 million gallons of coal ash slurry spilled out into the Emory River and onto surrounding land, damaging structures.
The TVA spent more than $1 billion on its Kingston coal ash cleanup.
The TVA has completed an amended supplemental Environmental Assessment that explains the expansion of the support area, and considered the potential impacts. The final document and associated materials are available for review at www.tva.com/nepa.
TVA already has a construction permit for the next phase of the landfill. However, TVA has applied for other required permits through the Tennessee Department of Environment and Conservation, which includes a public hearing and comment period.
— — — — —
The Future of Coal-fired Generation is one of POWERGEN International’s content tracks happening Nov. 19-21 in New Orleans. One of the Future of Coal-fired sessions will include a discussion on what to do with coal ash, while another focuses on carbon capture technologies. Registration is open for POWERGEN.