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415 ILCS 5/21.7

    (415 ILCS 5/21.7)
    Sec. 21.7. Landfills.
    (a) The purpose of this Section is to enact legislative recommendations provided by the Mahomet Aquifer Task Force, established under Public Act 100-403. The Task Force identified capped but unregulated or underregulated landfills that overlie the Mahomet Aquifer as potentially hazardous to valuable groundwater resources. These unregulated or underregulated landfills generally began accepting waste for disposal sometime prior to 1973.
    (b) The Agency shall prioritize unregulated or underregulated landfills that overlie the Mahomet Aquifer for inspection. The following factors shall be considered:
        (1) the presence of, and depth to, any aquifer with
    
potential potable use;
        (2) whether the landfill has an engineered liner
    
system;
        (3) whether the landfill has an active groundwater
    
monitoring system;
        (4) whether waste disposal occurred within the
    
100-year floodplain; and
        (5) landfills within the setback zone of any potable
    
water supply well.
    (c) Subject to appropriation, the Agency shall use existing information available from State and federal agencies, such as the Prairie Research Institute, the Department of Natural Resources, the Illinois Emergency Management Agency, the Federal Emergency Management Agency, and the Natural Resources Conservation Service, to identify unknown, unregulated, or underregulated waste disposal sites that overlie the Mahomet Aquifer that may pose a threat to surface water or groundwater resources.
    (d) Subject to appropriation, for those landfills prioritized for response action following inspection and investigation, the Agency shall use its own data, along with data from municipalities, counties, solid waste management associations, companies, corporations, and individuals, to archive information about the landfills, including their ownership, operational details, and waste disposal history.
(Source: P.A. 101-573, eff. 1-1-20.)