315 ILCS 30/32
When a Department of Urban Renewal has been established hereunder, the presiding officer of the municipality shall so notify the Chairman of the conservation board in its area of operation by transmitting to such Chairman a certified copy of the ordinance of the governing board providing for the creation of such Department. Upon receipt of such notice, the conservation board shall promptly prepare a detailed report covering its operations and activities and the status of all of its pending programs, together with all of the pertinent data and information as may be requested by the Department, and copies of such report shall be submitted to the presiding officer and the Department.
Upon approval of such report by the presiding officer, all functions and records of the conservation board shall be transferred to the Department and the governing body shall, by ordinance, dissolve such conservation board.
315 ILCS 30/32