The Illinois Solid Waste Management Act, enacted in September 1986, established the State's commitment to address solid waste handling, based on a solid waste management hierarchy as follows:
- volume reduction at the source;
- recycling and reuse;
- combustion with energy recovery;
- combustion for volume reduction; and
- disposal in landfill facilities.
Under this Act, the Illinois EPA is required to publish an annual report "regarding the projected disposal capacity available for solid waste in sanitary landfills".