Mich. Admin. Code R. 257.1511
Rule 11. If a county discontinues participation in the state aid program, the county clerk shall notify the department by November 1 of the year prior to discontinuance, of the county's decision by certified resolution. Upon submission of a state aid voucher for the final calendar year of county participation, a deduction shall be made from the total state aid voucher of the fair market value of all authorized equipment previously included in a claim for which reimbursement has been made in accordance with the act and these rules. If the fair market value of such authorized equipment exceeds the total claim for the final calendar year of county participation, 75% of such excess shall be refunded to the department by the county and deposited in the state general fund.
Mich. Admin. Code R. 257.1511