28.16. No fee shall be exigible for the initial issuance of a journeyman competency certificate to an operator of concrete pumps equipped with a distribution mast who has obtained an exemption pursuant to section 33.8 of the Regulation respecting the vocational training of workforce in the construction industry (chapter R-20, r. 8), according to a monthly report filed with the Commission by a registered employer, the holder has worked in the construction industry during the 14 preceding months.