the sad story is the whole sludge thing was the problem but ADS was only wrong because of bad business practices so to say. When the marcellus shale drilling started around here some politician that prob got a nice chunk of change from the gas industry made the changes to the sludge cap at PA landfills. Well someone pushed it anyway prob had to go through pa senate or something of that nature, but prob just pushed through because no one had any idea it was even an issue, the one of many problems with government.