Nope, somehow we just didn't think there'd be any press releases on the Hanford site about this one. And there aren't.
In the middle of the last century, Hanford was conducting an array of tests not only on generating nuclear power but also on the effects of radiation. Apparently, a lot of those tests were conducted on animals. The animals, which eventually did not survive, were buried out in the plains near the Hanford site. The radiation was low-level (mostly at least, one assumes), but now they're going to have to be dug up and re-buried in more secure surroundings.
How many animals is unclear. But the amount of waste (which includes a considerable amount of dirt) is estimated at 35,000 pounds. The project appears to be getting the nickname, "the Big Stink."
The metaphor in all this presumably needs no elaboration.