(1) A refresher training course is required every two years for workers and supervisors.

(2) Department approved refresher worker and supervisor training courses shall provide at a minimum:

(a) A thorough review of the subjects required under WAC 246-205-031;

(b) An update of information on state-of-the-art procedures and equipment;

(c) A review of regulatory changes and interpretation; and

(d) Other subjects if required by the department to update information on new technology and procedures.