On February 8, 2024, the NRC issued a notice of violation to Construction Materials Technologies, LLC (licensee) for a Severity Level (SL) III violation. The violation involved the licensee’s failure to use a minimum of two physical controls that form tangible barriers to secure a portable gauge while not under the control and constant surveillance of the licensee as required by Title 10 of the Code of Federal Regulations (10 CFR) 30.34(i) and 10 CFR 20.1801. Specifically, an unlocked portable gauge was discovered in the bed of an unattended truck in an unrestricted area.