On January 26, 2017, the NRC issued a Notice of Violation to Thrasher Engineering, Inc. for a Severity Level III violation. The violation involved a failure to control and maintain constant surveillance or failure to use two independent physical controls that form tangible barriers to secure a portable gauge from unauthorized removal as required by 10 CFR 20.1802 and 30.34(i). Specifically, on September 13, 2016, a gauge containing licensed material was left unattended and uncontrolled in the back of a pickup truck at a temporary jobsite. The keys to the vehicle, vehicle camper top, and transport case were left inside the cab of the vehicle while the cab was unlocked.