70 ILCS 200/110-20

Within 60 days after September 11, 1989 (the effective date of Article 6 of Public Act 86-907), the Mayors of the Cities of LaSalle, Oglesby, Peru and Spring Valley, with the advice and consent of the respective City Councils, shall appoint 1 member each of the Board for initial terms expiring June 1, 1990; 1 member each for initial terms expiring June 1, 1991. 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.