Section 415 ILCS 5/21.6 - Materials disposal ban(a) Beginning July 1, 1996, no person may knowingly mix liquid used oil with any municipal waste that is intended for collection and disposal at a landfill.(b) Beginning July 1, 1996, no owner or operator of a sanitary landfill shall accept for final disposal liquid used oil that is discernible in the course of prudent business operation.(c) For purposes of this Section, "liquid used oil" does not include used oil filters, rags, absorbent material used to collect spilled oil or other materials incidentally contaminated with used oil, or empty containers which previously contained virgin oil, re-refined oil, or used oil.Amended by P.A. 100-0621,§ 10-185, eff. 7/20/2018.Amended by P.A. 094-0793, § 775, eff. 5/19/2006. P.A. 91-357, eff. 7-29-99.