Mich. Comp. Laws § 338.3221: Post abatement air monitoring check; maximum level of asbestos fibers.

Sec. 221.

Except as provided by this subsection, a building or structure owner or lessee shall have a post abatement air monitoring check performed by a qualified neutral party completely independent of the asbestos abatement contractor at all asbestos abatement project sites involving a negative pressure enclosure as specified by 29 C.F.R. 1926.1101(g)(5)(i) that involve 10 or more linear feet or 15 or more square feet of friable asbestos materials. If the asbestos abatement contractor and the building or structure owner or lessee agree, the owner or lessee may have the post abatement air monitoring check required by this subsection performed by in-house personnel or by the asbestos abatement contractor.

Whenever feasible, unless waived by the building or structure owner or lessee, the post abatement air monitoring check required by this section shall make use of aggressive air sampling methods as described in unit III.B.7.d. to appendix A to subpart E of part 763 of title 40 of the code of federal regulations, which is adopted in this act by reference.

Upon request by the department, a post abatement air monitoring check taken pursuant to this section shall be reported to the department.

After completion of the asbestos abatement project, the level of asbestos fibers per cubic centimeter of air that are more than 5 micrometers in length when sampled and analyzed according to method 7400 entitled "fibers" issued by the national institute of occupational safety and health (NIOSH) on 2/15/84 and revised on 5/15/89 which was published in the NIOSH manual of analytical methods, 3rd edition, shall not exceed 0.05 asbestos fibers at the asbestos abatement project site.