On May 11, 2011, the NRC issued a Notice of Violation to Del Valle Group (DVG) for a Severity Level III violation involving the failure to obtain authorization in a specific NRC license to own and possess three portable moisture density gauges, as required by 10 CFR 30.3(a). Specifically, from November 30, 2008 through October 28, 2010, DVG owned and/or possessed byproduct material (discrete radium-226 sources contained in three portable moisture density gauges) without authorization in a specific or general license issued in accordance with NRC regulations.