Disposal of spilled coal ash a long, winding trip

More than a year after a Tennessee coal ash spill created one of the worst environmental disasters of its kind in U.S. history, the problem is seeping into several other states.
It began Dec. 22, 2008, when a retaining pond burst at a coal-burning power plant, spilling 5.4 million cubic yards of coal ash across 300 acres into the Emory River and an upscale shoreline community near Knoxville. It was enough ash to cover a square mile five feet deep.
While the Tennessee Valley Authority’s cleanup has removed much of the ash from the river, the arsenic- and mercury-laced muck or its watery discharge has been moving by rail and truck through three states to at least six different sites. Some of it may end up as far away as Louisiana.
At every stop along the route, new environmental concerns pop up. The coal-ash muck is laden with heavy metals linked to cancer, and the U.S. Environmental Protection Agency is considering declaring coal ash hazardous.
After the spill, the TVA started sending as many as 17,000 rail carloads of ash almost 350 miles south to the landfill in Uniontown, Ala. At least 160 rail shipments have gone out from the cleanup site, said TVA spokeswoman Barbara Martocci.