On April 23, 2014, the NRC issued a Notice of Violation to ECS Carolinas, LLP (ECS), for a Severity Level III Problem for two related violations. The violations involved ECS's failure to: (1) control and maintain constant surveillance of the gauge that is in an unrestricted area as required by 10 CFR 20.1802 and (2) use two independent physical controls that form tangible barriers to secure the gauge from unauthorized removal in accordance with 30.34(i). Specifically, on May 23, 2011, an unsecured portable gauge was inadvertently left unattended and uncontrolled at a jobsite at the Marine Corps Base, Camp Lejeune. The unattended gauge was recognized and recovered by a Camp Lejeune contractor, who secured the gauge and subsequently returned to ECS approximately three hours later.