Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.21323l

(a) For the recovery of corrective action costs and natural resources damages pursuant to section 21323b(1)(a), (b), or (c),  1 within 6 years of initiation of physical on-site construction activities for the corrective action at the property by the person seeking recovery, except as provided in subdivision (b).

(b) For 1 or more subsequent actions for recovery of corrective action costs pursuant to section 21323b, at any time during the corrective action, if commenced not later than 3 years after the date of completion of all corrective action at the property.

(c) For civil fines under this part, within 3 years after discovery of the violation for which the civil fines are assessed.