0n December 22, 2008 a 'storage pond' dam broke in Harriman, TN flooding the Tennessee River Valley with over 5.4 million cubic yards of coal ash sludge. What wasn't known at the time of this man-made disaster is how many more Coal Ash dump sites exist in the U.S.A. Thanks to a Freedom of Information Act request by the Environmental Integrity Project, Earthjustice and the Sierra Club the EPA released a list of 584 coal ash dump sites across the country. 35 states, including New Mexico, have coal ash dumps containing arsenic, lead, mercury and other toxins.