(1) The department of labor shall provide a full-time safety and health inspector at the site where a tunnel, shaft, caisson, or cofferdam is constructed or repaired under pressurized conditions. The inspector shall:

    (a) Have training and experience in, and knowledge of, pressurized tunnel construction.

    (b) Have training and experience in, and an understanding of, ventilation systems.

    (c) Have training and experience in, and knowledge of, the safety and health standards relating to pressurized tunnel construction.

    (d) Maintain a complete and detailed log of construction activity.

    (e) Test, monitor, and record the air quality in all work areas and unoccupied areas of the completed work.

    (f) Report immediately to the employer and affected employees the existence of an imminent danger or serious violation.

    (g) Conduct investigations and enforce this act and rules promulgated and orders issued under this act.

    (2) The contracting party for whom a tunnel is constructed or repaired under pressurized conditions shall pay the cost of the safety and health inspector's wages and fringe benefits. The cost shall be paid to the department of labor to the credit of the general fund of the state. The department of labor shall advise contracting parties upon request, and publish regularly the regular and overtime rates for the safety and health inspector required by this section.

    (3) If the tunnel construction activity exceeds 60 hours per week, the department shall provide a full-time safety and health inspector for each 60 hours of tunnel construction activity or portion thereof.

    (4) This section shall not diminish the employer's responsibility under this act.