The Department shall notify, in writing, the overlapping taxing district of the proposed apportionment under this Section, by August 1 of the year in question. If the overlapping taxing district enacts a resolution in opposition to the apportionment and files a certified copy of the resolution with the Department by the following December 31, the Department shall not apportion the tax burden of the overlapping district for that tax year or any subsequent tax year unless a written request for apportionment in accordance with Section 18-155 is received in a subsequent year.
35 ILCS 200/18-160