The news from the East Tennessee coal sludge spill keeps getting worse. Here's an update from CNN:
Estimates for the amount of thick sludge that gushed from a Tennessee coal plant this week have tripled to more than a billion gallons, as cleanup crews try to remove the goop from homes and railroads and halt its oozing into an adjacent river.The sludge, a byproduct of the ash from coal combustion, was contained at a retention site at the Tennessee Valley Authority's power plant in Kingston, about 40 miles east of Knoxville. The retention wall breached early Monday, sending the sludge downhill and damaging 15 homes. All the residents were evacuated, and three homes were deemed uninhabitable, according to the TVA.
TVA officials originally said the cleanup would take four to six weeks. Now they say they aren't sure.
TVA's initial estimate for the spill was 1.8 million cubic yards or more than 360 million gallons of sludge. By Friday, the estimate reached 5.4 million cubic yards or more than 1 billion gallons -- enough to fill 1,660 Olympic-size swimming pools.
The plant sits on a tributary of the Tennessee River called the Clinch River. At least 300 acres of land has been coated by the sludge -- a bigger area than the Exxon Valdez oil spill.