Utah Code § 63M-15-202

If a member appointed under Subsection 63M-15-201(2)(c) resigns from the commission, is removed from the commission under Subsection 63M-15-201(3)(d), or the member's term expires, the governor or commission leadership shall appoint a replacement member within 90 days after the day on which the governor receives notice of the member's resignation, removal, or term expiration.