Also in the manner provided in this Act as amended, a "Local Mass Transit District" may be created with boundary to enclose a unit area of contiguous land, to be known as the "participating area". Such a "participating area" may be organized as a district under this Act without regard to boundaries of counties or other political subdivisions or municipal corporations.
Upon the expiration of the term of a trustee who is in office on the effective date of this amendatory Act of 1975, the successor shall be a resident of whichever county is entitled to such representation in order to bring about the proportional representation required herein, and he shall be appointed by the county board of that county, or in the case of a home rule county as defined by Article VII, Section 6 of the Constitution of 1970, the chief executive officer of that county, with the advice and consent of the county board in accordance with the provisions previously enumerated. Successors shall serve 5 year overlapping terms.
Thereafter, each trustee shall be succeeded by a resident of the same county who shall be appointed by the same appointing authority; however, the provisions of the preceding paragraph shall apply to the appointment of the successor to each trustee who is in office at the time of the publication of each decennial Federal census of population.
70 ILCS 3610/3.1