ifishy,
You've got the cart before the horse. The large ponds you see being built are fresh water, no flowback from well sites in those ponds. Also the well pads are lined so all material is confined to the site. People really need to give this industry a chance,
they are doing all they can to do a job as safely and as cheaply as possible. Just like any other business. What you read in the paper or hear on the news is only a portion of whats going on and nine times out of ten it's the bad side. As with anything, there are going to be mistakes made and with the scrutiny placed on this industry things are magnified. Not meant to pick on you, just a little more info.
Scott