620 ILCS 5/38
Subject to the provisions of Section 41, the Department is authorized to accept and receive Federal moneys, and other moneys, either public or private, for and on behalf of this State, or any municipality or other political subdivision thereof, at the request of such municipality or political subdivision, for the acquisition, construction, development, improvement, operation and maintenance of air navigation facilities in this State, whether such work is to be done by the State or by such municipalities or other political subdivisions, or jointly, aided by grants of aid from the United States, upon such terms and conditions as are or may be prescribed by the laws of the United States and any rules or regulations made thereunder, and it is authorized to act as agent of any municipality or other political subdivision of this State upon the request of such municipality or political subdivision (or upon designation by such municipality or political subdivision pursuant to Section 38.01), in accepting and receiving those moneys on its behalf for air navigation facility purposes, and in contracting for the acquisition, construction, development, improvement, operation and maintenance of air navigation facilities in this State, financed either in whole or in part by Federal monies, and the governing body of any such municipality or other political subdivision is authorized to designate the Department as its agent for such purposes and to enter into an agreement with it prescribing the terms and conditions of such agency in accordance with Federal laws, rules, and regulations and with this act. Such monies as are paid over by the United States Government shall be retained by the State or paid over to said municipalities or other political subdivisions under such terms and conditions as may be imposed by the United States Government in making such grants.
620 ILCS 5/38