35 Ill. Adm. Code 405.109
Abandonment Plan
Section 405
Section 405.109 Abandonment
Plan
a) A State or NPDES permit must include, as a condition, an
abandonment plan.
b) An abandonment plan must be incorporated into the permit by
reference if it:
1) Contains a time schedule for executing and completing the plan
within a reasonable time after abandonment considering any potential adverse environmental
impact pending the plan's completion and the amount of time necessary to
complete all steps within it. One year is assumed to be a reasonable time
unless the operator demonstrates that a longer time is reasonable; and
2) Shows that the mine related facilities and mining activities
will be abandoned without violating the Act or Subtitle D.
c) If the abandonment plan does not meet subsection (b) requirements,
the Agency may either deny the permit or issue it with a modified abandonment
plan.
d) The time limit under subsection (b)(1) is inapplicable to
abandonment plans for surface coal mines that are approved as reclamation plans
under the Surface Coal Mining Land Conservation and Reclamation Act [225 ILCS
720].
e) Any abandonment plan constituting a substantial change from
the permitted abandonment plan is a revised abandonment plan.
f) A permittee must apply for a new, modified, or supplemental
NPDES or State permit before implementing a revised abandonment plan within the
time limits of 35 Ill. Adm. Code 403.104(c).