On December 18, 2017, the NRC issued a Severity Level III Notice of Violations to CC&T for failing to meet the requirements of 10 CFR 20.1801 and 30.34(i). Specifically, between July 29 and August 10, 2017, on multiple occasions the licensee stored a portable gauge in an unlocked location without a minimum of two independent physical controls that form tangible barriers to secure the device while not under the licensee's control and constant surveillance.