Mich. Comp. Laws § 29.5o

Sec. 5o. (1) The director of the department of environmental quality may, at the request of the organized fire department having jurisdiction over a terminal, require additional safety equipment and procedures when the public safety is endangered. (2) A person may request a variation of the requirements of section 5j, 5k, 5l, 5m, or 5n, or subsection (1), under the procedures provided in section 3c. (3) A local unit of government shall not enact an ordinance or ordinances more restrictive than the requirements included in sections 5j to 5n.