184. The prescription period for penal proceedings for offences under this Act is the longer of
(1) three years from the date the offence was committed; and
(2) two years from the date on which the inspection or investigation that led to the discovery of the offence began.
In the cases referred to in subparagraph 2 of the first paragraph, the certificate of the inspector or investigator constitutes, in the absence of evidence to the contrary, conclusive proof of the date on which the inspection or investigation began.