Associated Press, June 21, 2011 by Noaki Schwartz
http://www.cbsnews.com/stories/2011/06/22/travel/main20073328.shtml
Holly Doremus, an environmental law professor at the University of California at Berkeley, said there has been debate over what constitutes solid waste, but in this case there’s no doubt the tiny toxic elements are waste…. “It’s not a slam dunk either way, and I think it’s very creative by the NRDC to have found this possibility,” she said.