Code of Colorado Regulations
1000 - Department of Public Health and Environment
1007 - Hazardous Materials and Waste Management Division
6 CCR 1007-3 - HAZARDOUS WASTE
Part 264 - HAZARDOUS WASTE - STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE AND DISPOSAL FACILITIES
Subpart L - Waste Piles
Section 6 CCR 1007-3-264.258 - Closure and Post-Closure Care

Universal Citation: 1000 CO Code Regs 6 CCR 1007-3-264.258

Current through Register Vol. 47, No. 17, September 10, 2024

(a) At closure, the owner or operator must remove or decontaminate all waste residues, contaminated containment system components (liners, etc.), contaminated subsoils, and structures and equipment contaminated with waste and leachate, and manage them as hazardous waste unless § 261.3(d) of these regulations applies.

(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 paragraph (a) of this section, the owner or operator finds that not all contaminated subsoils can be practicably removed or decontaminated, he/she must close the facility and perform post-closure care in accordance with the closure and post-closure care requirements that apply to landfills ( § 264.310).

(c)

(1) The owner or operator of a waste pile that does not comply with the liner requirements of § 264.251(a)(1) and is not exempt from them in accordance with § 264.250(c) or § 264.251(b), must:
(i) Include in the closure plan for the pile under § 264.112 both a plan for complying with paragraph (a) of this section and a contingent plan for complying with paragraph (b) of this section in case not all contaminated subsoils can be practicably removed at closure; and

(ii) Prepares a contingent post-closure plan under § 264.118 for complying with paragraph (b) of this section in case not all contaminated subsoils can be practicably removed at closure.

(2) The cost estimates calculated under § § 266.12 and 266.13 for closure and post-closure care of a pile subject to this paragraph 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 paragraph (a) of this section.

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