On December 3, 2020, the NRC issued two Severity Level III Notices of Violation to TTL Associates, Inc. (TTL) for a violation of 10 CFR 20.1802 and Condition 14 of its license. Specifically, on July 7, 2020, the TTL failed to control and maintain constant surveillance of a portable moisture density gauge located in an unrestricted area. Also, TTL detached a sealed source containing licensed material from the source rod without being specifically authorized to do so and in contrast to the requirement specified on its license.