On March 10, 2016, the NRC issued a Notice of Violation to Pacific Soils Engineering and Testing for a Severity Level III violation involving failure to use a minimum of two independent physical controls that form tangible barriers to secure a portable gauge from unauthorized removal, when not under the control and constant surveillance of the licensee. Specifically, on June 24, 2015, the licensee stored a portable gauge without the two independent physical controls present, when the gauge was not under its direct control and constant surveillance.