On January 21, 2010, the NRC issued a Notice of Violation to Great Falls Clinic for violations associated with a Severity Level III problem involving the failure to: (1) secure from unauthorized removal or access licensed materials that are stored in controlled or unrestricted areas, in violation of 10 CFR 20.1801 and (2) secure the unit, console, console keys and the treatment room when not in use or unattended, in violation of 10 CFR 35.610 (a)(1). Specifically, the licensee stored a high dose-rate remote afterloader unit in a designated controlled area and did not secure the radioactive material from unauthorized removal or access. The console and unit were found in the unattended and not secured, designated controlled area. The console was found with its key inserted.