Minn. R. agency 144, ch. 4731, WELL LOGGING, pt. 4731.7090

Current through Register Vol. 49, No. 29, 2025

Part 4731.7090 - 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.

Minn. R. agency 144, ch. 4731, WELL LOGGING, pt. 4731.7090

29 SR 755

Statutory Authority: MS s 144.1202; 144.1203