The BYU physics department had a nuclear reactor used for research.  It supposedly wasn’t large, just enough to power a light bulb.  They took the waste from the reactor and stored it in a shed on the south side of campus.

Is this dangerous?

There isn’t much waste.  It is all stored in a single 50 gallon barrel.  It has been rumored that there is so little waste that if someone were to go down by the shed with a Geiger counter, no trace of the radiation would be detected.  So no worries, it won’t hurt you.  Just another BYU secret.