(2) Subsection (1) of this section does not apply to highway construction or maintenance projects or to electricity, water, sewer or gas transmission facility construction or maintenance projects.
(3) The director may, by order, exempt or partially exempt, individual or classes of construction projects from the requirements of subsection (1) of this section when conditions are such that compliance is impractical or impossible. [1975 c.751 §2; 1993 c.450 §1]