Where the inhalation of an HCA is concerned, an employer contemplated in regulation 5(4) must ensure that the measurement programme of the airborne concentrations of the HCA to which an employee is exposed, is-
(a) carried out in accordance with the provisions of these regulations;
(b) carried out only after the relevant health and safety representative or relevant health and safety committee
has been informed thereof and given a reasonable opportunity to comment thereon;c) carried out by an approved inspection authority; and
(d) representative of the exposure of an employee to the airborne HCA in accordance with the provisions of subregulation (2).