Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.19607

Sec. 19607. (1) The total proceeds of all bonds shall be deposited into the fund and allocated as follows:

(2) The state treasurer shall direct the investment of the fund. Except as may be required to maintain the exclusion from gross income of the interest paid on the bonds or to comply otherwise with state or federal law, interest and earnings from investment of the proceeds of any bond issue shall be allocated in the same proportion as earned on the investment of the proceeds of the bond issue.

(3) Except as may be required to maintain the exclusion from gross income of the interest paid on the bonds or to comply otherwise with state or federal law, all repayments of principal and interest earned under a loan program authorized by this part shall be credited to the appropriate restricted subaccount of the fund and used for the purposes authorized for that subaccount or to pay debt service on any obligation issued which pledges the loan repayments and the proceeds of which are deposited in that subaccount.

(4) The bond proceeds shall be expended in an appropriate manner that maintains the tax exempt status of the bonds.

(5) The unencumbered balance in the fund at the close of the fiscal year shall remain in the fund and shall not revert to the general fund.

(6) The department shall provide an annual accounting of bond proceeds spending on a cash basis to the department of treasury in order for the state to comply with requirements set forth for issuing tax exempt bonds, including arbitrage rebate calculations. This accounting shall be submitted to the governor, the standing committees of the house of representatives and the senate that primarily address issues pertaining to the protection of natural resources and the environment, and the appropriations committees in the house of representatives and the senate.