16. It is forbidden to hinder an investigator or inspector of the Régie in the performance of his duties, to mislead or attempt to mislead him by concealment or fraudulent misrepresentation or to refuse to obey any order he may give under this act or the regulations.
Such investigator or inspector shall, if so required, produce a certificate attesting his authority, signed by the president of the Régie or a person authorized for that purpose by him.
Any person contravening the provisions of this section is liable, on summary proceeding, to a fine of not more than $500.