70 ILCS 2405/22a.47
The committee of local improvements may appoint an engineer for the committee and such assistant engineers, clerks and inspectors as may be necessary to carry into effect the purposes of this Act.
The committee is hereby authorized to make or cause to be made the written contracts and receive all bonds authorized by this Act and to do any other act, expressed or implied, that pertains to the execution of the work provided for by the ordinance authorizing such work. The committee shall fix the time for the commencement of the work under such ordinance and for the completion of the work under all contracts entered into by it. This work shall be prosecuted with diligence thereafter to completion, and the committee may extend the time so fixed from time to time as they may think best for the public good. The work to be done pursuant to such contracts in all cases must be done under the direction and to the satisfaction of the committee, and all contracts made therefor must contain a provision to that effect, and also express notice that in no case, except as otherwise provided in the ordinance, or the judgment of the court, shall the committee, or district, except as otherwise provided in this Act, or any officer thereof, be liable for any portion of the expenses nor for any delinquency of persons or property assessed.
The acceptance by the committee of any improvement shall be conclusive in the proceeding to make the assessment and in all proceedings to collect the assessment or installments thereof on all persons and property assessed therefor that the work has been performed substantially according to the requirements of the ordinance therefor. However, if any property owner is injured by any failure so to construct the improvement or suffers any pecuniary loss thereby, he may recover the amount of the injury in a civil action against the district making the improvement if the action is commenced within one year from the date of the acceptance of the work by the committee.
70 ILCS 2405/22a.47