Within 60 days after January 9, 1990 (the effective date of Article 2 of Public Act 86-1017), the mayor of the City of Salem, with the advice and consent of the Salem city council, shall appoint 3 members of the Board for initial terms expiring June 1, 1991; 2 members for initial terms expiring June 1, 1992; and 2 members for initial terms expiring June 1, 1993. The successors of the initial members shall be appointed in like manner for 3 year terms from the date of appointment, except in case of an appointment to fill a vacancy.
70 ILCS 200/245-20