35 Ill. Adm. Code 807.502
Closure Performance Standard
Section 807
Section 807.502Â Closure
Performance Standard
In addition to the specific
requirements of this Part, an operator of a waste management site shall close
the site in a manner which:
a)Â Â Â Â Â Â Â Â Minimizes the need for further maintenance; and
b)Â Â Â Â Â Â Â Â Controls, minimizes or eliminates post-closure release of
waste, waste constituents, leachate, contaminated rainfall, or waste
decomposition products to the groundwater or surface waters or to the
atmosphere to the extent necessary to prevent threats to human health or the
environment.