Mich. Comp. Laws § 324.95102

Sec. 2. The state shall borrow a sum not to exceed $675,000,000.00 and issue the general obligation bonds of this state, pledging the full faith and credit of the state for the payment of principal and interest on the bonds, to finance environmental and natural resources protection programs that would clean up and redevelop contaminated sites, protect and improve water quality, prevent pollution, abate lead contamination, reclaim and revitalize community waterfronts, enhance recreational opportunities, and clean up contaminated sediments in lakes, rivers, and streams.