RECORDS OF MATERIAL USE

Subpart 1. Use records. A licensee must maintain records for each use of licensed material showing: A. the make, model number, and a serial number or a description of each sealed source used; B. in the case of unsealed licensed material used for subsurface tracer studies, the radionuclide and quantity of activity used in a particular well and the disposition of any unused tracer materials; C. the identity of the logging supervisor who is responsible for the licensed material and the identity of logging assistants present; and D. the location and date of use of the licensed material. Subp. 2. Record retention. A licensee must make the records required under subpart 1 available for inspection by the commissioner. A licensee must retain the records for three years from the date of the recorded event.