On August 25, 2015, the NRC issued a Notice of Violation to Howard University (HU) for a Severity Level III violation. The violation involved a failure to notify the NRC within 24 hours after the discovery of an unplanned contamination event in accordance with 10 CFR 30.50(b). Specifically, in February/March 2008, HU discovered that a storage room had been contaminated with material from a vial containing millicurie quantities of cesium-137 and prohibited entry into the room for several months until decontamination was complete. However; from February/March 2008 until May 7, 2015, HU did not notify the NRC within 24 hours as required, after the discovery of the contamination event.