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expended for airport-related purposes. If there is no airport-related purpose to which aviation fuel tax revenue is dedicated, then aviation fuel is excluded from any additional amount authorized under subsection (d-5). The rate in St. Clair County shall be 0.25% unless the Metro-East Mass Transit District in St. Clair County has an "airport-related purpose" and the additional 0.50% of the 0.75% tax on aviation fuel is expended for airport-related purposes. If there is no airport-related purpose to which aviation fuel tax revenue is dedicated, then aviation fuel is excluded from the additional 0.50% of the 0.75% tax. The Board must comply with the certification requirements for airport-related purposes under Section 2-22 of the Retailers' Occupation Tax Act. For purposes of this Section, "airport-related purposes" has the meaning ascribed in Section 6z-20.2 of the State Finance Act. This exclusion for aviation fuel only applies for so long as the revenue use requirements of 49 U.S.C. 47107(b) and 49 U.S.C. 47133 are binding on the District. The tax imposed under this paragraph and all civil penalties that may be assessed as an incident thereof shall be collected and enforced by the State Department of Revenue. The Department shall have full power to administer and enforce this paragraph; to collect all taxes and penalties due hereunder; to dispose of taxes and penalties so collected in the manner hereinafter provided; and to determine all rights SB3019 Enrolled LRB104 20255 HLH 33706 b Public Act 104-0468