coal ash ponds like this. it may look like a beautiful lake. but it is basically an unlined pit in the ground with millions of tons of ash. mercury, cad me yum, arsenic, contaminants associated with cancer, right in danielle's bark yard. in 2009 danielle began experiencing headaches. >> i went to the hospital and they told me i had a brain tumor. they weren't lying. they said it was the size of a drink box. >> can i take a look again. >> she was diagnosed withstage three brain canser. >> what do you think caused this. >> i'm 100% sure i know what caused it. that's duke energy. >> of course that is impossible to know for certain. her doctors can't say. there have been too few studies to make conclusions. but i wanted to see the water myself. this is the beautiful kataba