Mich. Comp. Laws § 801.59

Sec. 9. If either of the following occur, the sheriff shall certify that fact in writing by first-class mail or personal delivery, to the judges and county officials notified pursuant to section 2 and, unless a majority of the judges and county officials so notified find upon receipt of the certification pursuant to this section that the sheriff has acted in error, the sheriff shall end the county jail overcrowding state of emergency: (a) At any time during the county jail overcrowding state of emergency, the general prisoner population of the county jail is reduced to the level prescribed in section 6(1). (b) The county jail's population is not reduced to the level prescribed in section 6(1) within 70 days after the declaration of the county jail overcrowding state of emergency.