On December 14, 2015, the NRC issued a Notice of Violation to ECS Mid-Atlantic, LLC, 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 June 8, 2015, a portable gauze was left unattended and uncontrolled at a jobsite at the U.S. Naval Academy and it was not secured with any physical controls that form tangible barriers to secure it from unauthorized removal.