Sadly something very similar has occurred in Mahwah, NJ. A motor car company plant used to be there, it provided tons of jobs. Then they packed up for Detroit and left the waste dump to rot. According to them it was up to spec at the time, screw off. According the the people getting sick, and the children dying... who cares if it was, fix it, you got the bail out from us.
Naturally, the problem has already gone into the water table.
Sad but true.