rabbits routinely burrowed into those sites. they liked it, licked it. and then pooped it, leaving slightly radioactive poop on the ground. the radioactive poop the bunnies are leaving are, thanks to your stimulus dallas, being collected as low-level radioactive waste. the department of energy hired a contractor to fly a helicopter mounted with geiger counters and gps technology and they fly the chopper over the rabbit pop laiden landscape and they cover the 14 square mile area at a height of about 50 feet, flying at about 80 miles an hour and they gps mark every piece of rabbit poop and send their inlucky employees out with a map to collect it all. the nuclear poop is dumped along with all the rest of their