On June 18, 2020, the NRC issued a Notice of Violation to Christian Wheeler Engineering (Licensee) for a Severity Level III violation. The violation involved the licensee's failure to file NRC Form 241, "Report of Proposed Activities in Non-Agreement States," at least three days prior to engaging in licensed activities within NRC jurisdiction, as required by 10 CFR 150.20. Specifically, from January 7 through February 20, 2020, Christian Wheeler Engineering, a licensee of the State of California, performed licensed activities at Camp Pendleton, Oceanside, California and from February 19 through 20, 2020, at Marine Corps Air Station Miramar/Naval Air Station, San Diego, California, without filing the required documentation with the NRC.