On April 21, 2003, a Notice of Violation was issued for a Severity Level III violation involving the failure to secure from unauthorized removal or limit access to licensed material (a portable moisture/density gauge containing a maximum activity of cesium-137 of 11 millicuries and a maximum activity of americium-241:beryllium of 44 millicuries) in an unrestricted area, and failure to control and maintain constant surveillance of this licensed material.