On January 11, 2008, a Notice of Violation was issued 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 are not under the control and constant surveillance of the licensee. Specifically, On June 19, 2006, three gauges containing licensed material were stored and left unattended without any independent physical controls to secure the devices from unauthorized removal; and, (2) on June 19, 2007, one gauge was left unattended in a personal vehicle without any independent physical controls to secure the devices from unauthorized removal.