On May 13, 2020, the NRC issued a Notice of Violation and Proposed Imposition of Civil Penalty in the amount of $8,500 to Alt and Witzig Engineering, Inc. (Licensee) for a Severity Level (SL) III violation associated with the theft of a portable gauge due to the licensee’s failure to secure the gauge as required, and for a second SL III violation for the licensee’s failure to immediately notify the NRC of the stolen gauge. Specifically, on October 3, 2019, the licensee failed to secure a portable gauge with two independent physical barriers while not under its control and constant surveillance, as required by Title 10 of the Code of Federal Regulations (10 CFR) 30.34(i) and 10 CFR 20.1801, and the gauge was stolen. In addition, the licensee did not immediately notify the NRC of the stolen gauge in accordance with 10 CFR 20.2201.