September 2011 Meeting

Monday, September 12, 2011
6:00 - 7:30 pm

Pellissippi State Technical Community College
10915 Hardin Valley Road, Knoxville
J.L. Goins Administration Building, Faculty-Staff Dining Room


TVA Kingston Ash Recovery Project-Progress and Path Forward

Dennis H. Yankee
Sr. Manager, Environmental Monitoring & Analysis
Tennessee Valley Authority
Knoxville, Tennessee

The December, 2008 coal ash spill at the Tennessee Valley Authority Kingston Fossil Plant was unprecedented in scale. More than 5 million cubic yards of material spilled, completely filling an embayment and overflowing into the Emory River, completely blocking a 30-ft deep channel. This presentation provides an overview of the response to this spill and the authorities under which clean-up is occurring. It describes the multi-disciplinary monitoring and research underway to chemically and toxicologically characterize the spilled ash, investigate geochemical and hydrologic processes influencing movement of ash and ash contaminants, and evaluate potential ecological impacts of this large-scale accidental release of coal combustion products to the Emory River. Initial results indicate some increased bioaccumulation of contaminants associated with ash, but observed ecological effects have been relatively small, considering the volume of material released. Continuing monitoring and research will focus on potential long-term environmental effects.


Page updated May 26, 2018