A notice issued by an investigator under a provision of the Act referred to in one of the following paragraphs must be in accordance with the form specified in the paragraph:
(a) subsection 91(2) (notice of taking possession of plant, taking samples of substances etc) -- Form 2;
(b) subsection 92(1) (direction not to disturb workplace etc) -- Form 3;
(c) subsection 93(1) (issue of prohibition notices) -- Form 4;
(d) subsection 98(1) (issue of improvement notices) -- Form 5.