39.39—Records of material use.
(2)
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;
(3)
The identity of the logging supervisor who is responsible for the licensed material and the identity of logging assistants present; and
(b)
The licensee shall make the records required by paragraph (a) of this section available for inspection by the Commission. The licensee shall retain the records for 3 years from the date of the recorded event.