Environmental
The primary concern about properties near former landfills in Illinois includes:
AHigher property taxes due to proximity
BPotential methane gas migration and leachate contamination of groundwater✓ Correct
CRequired archaeological surveys before any development
DAutomatic placement in a FEMA flood zone
Explanation
Properties near former or active landfills may be subject to methane gas migration (which can accumulate to explosive levels in enclosed spaces) and leachate (contaminated liquid that can pollute groundwater). These hazards can affect property value, habitability, and financing, and may require mitigation measures.
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