605 ILCS 5/5-907
A road improvement impact fee advisory committee shall be created by the unit of local government intending to impose impact fees. The Advisory Committee shall consist of not less than 10 members and not more than 20 members. Not less than 40% of the members of the committee shall be representatives of the real estate, development, and building industries and the labor communities and may not be employees or officials of the unit of local government.
The members of the Advisory Committee shall be selected as follows:
If the unit of local government is a county, at least 30% of the members serving on the commission must be representatives of the municipalities within the county. The municipal representatives shall be selected by a convention of mayors in the county, who shall elect from their membership municipal representatives to serve on the Advisory Committee. The members representing the county shall be appointed by the chief executive officer of the county.
If the unit of local government is a municipality, the non-public representatives shall be appointed by the chief executive officer of the municipality.
If the unit of local government has a planning or zoning commission, the unit of local government may elect to use its planning or zoning commission to serve as the Advisory Committee, provided that not less than 40% of the committee members include representatives of the real estate, development, and building industries and the labor communities who are not employees or officials of the unit of local government. A unit of local government may appoint additional members to serve on the planning or zoning commission as ad hoc voting members whenever the planning or zoning commission functions as the Advisory Committee; provided that no less than 40% of the members include representatives of the real estate, development, and building industries and the labor communities.
605 ILCS 5/5-907