70 ILCS 1815/31
The Governor, by and with the advice and consent of the Senate, shall appoint 2 members of the Board and fill any and all vacancies. If the Senate is in recess when such appointment is made, the Governor shall make a temporary appointment until the next meeting of the Senate. The County Board of LaSalle County, the County Board of Putnam County, and the County Board of Bureau County shall each appoint one member of the Board. Of the members initially appointed, the 2 appointed by the Governor shall be appointed for initial terms expiring July 1, 1972, and the 3 appointed by their county boards shall be appointed for initial terms expiring July 1, 1973. At the expiration of the term of each member, his successor shall be appointed in a like manner and with like regard to the place of residence of the appointee except that after September 30, 1973, appointments to be made by the several chairmen of county boards shall be made with the advice and consent of the respective county boards.
70 ILCS 1815/31