70 ILCS 2805/44
At the time and place fixed in the specified notice for the public hearing, the committee of local improvements shall meet and hear the representations of any person desiring to be heard on the subject of the necessity for the proposed improvement, the nature thereof or the cost as estimated. The district's engineer may revise the plans, specifications or estimate of cost at any time prior to the committee's adoption of a resolution recommending passage of an ordinance as hereinafter set forth. The committee may adopt a second or further resolution abandoning the proposed scheme or adhering thereto, or changing, altering or modifying the extent, nature, kind, character and estimated cost, provided the change does not increase the estimated cost of the improvement to exceed 20% of the estimate set forth in the mailed notice of the public hearing without a further public hearing pursuant to a new mailed notice given in like manner as the first. Thereupon, if the proposed improvement is not abandoned, the committee shall have an ordinance prepared therefor to be submitted to the board. This ordinance shall prescribe the nature, character, locality and description of the improvement and shall provide whether the improvement shall be made wholly or in part by special assessment or special taxation of benefited property and may provide that plans and specifications for the proposed improvement be made part of the ordinance by reference to plans and specifications on file in the office of the district's engineer or to plans and specifications adopted or published by the State of Illinois or any political subdivision or agency thereof. If the improvement is to be paid in part only by special assessment or special taxation, the ordinance shall so state. If the improvement requires the taking or damaging of property, the ordinance shall so state, and the proceedings for making just compensation therefor shall be as described in Sections 9-2-14 through 9-2-37 of the Illinois Municipal Code, as now or hereafter amended.
70 ILCS 2805/44