Section 724.675  Closure

a)         At closure, the owner or operator must remove or decontaminate all waste residues, contaminated containment system components (pad, liners, etc.), contaminated subsoils, and structures and equipment contaminated with waste and leakage, and manage them as hazardous waste.

b)         If, after removing or decontaminating all residues and making all reasonable efforts to effect removal or decontamination of contaminated components, subsoils, structures, and equipment, as required in subsection (a), the owner or operator finds that not all contaminated subsoils can be practically removed or decontaminated, the operator must close the unit and perform post-closure care in accordance with closure and post-closure  care requirements that apply to landfills (Section 724.410). For permitted units, the requirement to have a permit continues throughout the post-closure period. In addition, for the purposes of closure, post-closure , and financial responsibility, such a drip pad is then considered to be a landfill, and the owner or operator must meet all of the requirements for landfills specified in Subparts G and H.

c)         Existing Drip Pads without Liners

1)         The owner or operator of an existing drip pad that does not comply with the liner requirements of Section 724.673(b)(1) must do the following:

A)        Include in the closure plan for the drip pad under Section 724.212 both a plan for complying with subsection (a) and a contingent plan for complying with subsection (b) in case not all contaminated subsoils can be practicably removed at closure; and

B)        Prepare a contingent post-closure plan under Section 724.218 for complying with subsection (b) in case not all contaminated subsoils can be practicably removed at closure.

2)         The cost estimates calculated under Sections 724.212 and 724.244 for closure and post closure care of a drip pad subject to this subsection (c) must include the cost of complying with the contingent closure plan and the contingent post-closure  plan, but are not required to include the cost of expected closure under subsection (a).

(Source:  Amended at 42 Ill. Reg. 22614, effective November 19, 2018)