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Hundreds Of Coal Ash Dumps Across US Lack Regulation

02/06/2009 05:12 am ET | Updated May 25, 2011

The coal ash pond that ruptured and sent a billion gallons of toxic sludge across 300 acres of East Tennessee last month was only one of more than 1,300 similar dumps across the United States -- most of them unregulated and unmonitored -- that contain billions more gallons of fly ash and other byproducts of burning coal.

Like the one in Tennessee, most of these dumps, which reach up to 1,500 acres, contain heavy metals like arsenic, lead, mercury and selenium, which are considered by the Environmental Protection Agency to be a threat to water supplies and human health. Yet they are not subject to any federal regulation, which experts say could have prevented the spill, and there is little monitoring of their effects on the surrounding environment.

Read the full story here or check out the New York Times' great coal ash explainer video

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