On July 1, 2016, the NRC issued a Notice of Violation to 7NT Enterprises, LLC, for a Severity Level III violation. The violation involved the failure to use a minimum of two independent physical controls that form tangible barriers to secure portable gauges from unauthorized removal when the portable gauges were not under the control and constant surveillance of the licensee as required by 10 CFR 30.34(i). Specifically, on multiple occasions, and most recently on March 22, 2016, the licensee stored portable gauges with only a single physical barrier and were not under the control and constant surveillance of the licensee.