Sunday Focus: The Tennesse Coal (and radioactive?) Ash Spill. An Update

Coal Ash cleanup underway, 2009

This article in The Tennessean newspaper is about the massive new coal ash containment pond just completed at the Kingston Coal fired power plant. The old pond's wall failed, spilling the coal ash across the land and water...coal ash as that was eventually carried by train to Perry County Alabama.
     The spill has already cost TVA $1.2 Billion, and may cost an additional Billion Dollars. 
     But note this critical paragraph in the story:

Part of what made cleanup so difficult was a mixing of the coal ash with radioactive pollution from the Oak Ridge nuclear reservation, making it impossible to remove.

Coal Ash being loaded on rail-cars headed to Alabama

    I've followed the coal ash story closely, because of the Black Belt Alabama connection, and because I went there to produce a story for WBHM Radio in Birmingham in 2009. And I have never before heard a reference to significant radioactivity.
     Did the people in Uniontown, in Perry County, Alabama, know there was radioactive material mixed in with the coal ash when it was delivered to the (now bankrupt) largest commercial landfill East of the Mississippi?