§ 21410. SWRCB - Closure Requirements for Waste Piles. (C15: s2583)
(a) Options -Waste piles shall be closed in one of two ways, as approved by the RWQCB.
(1) Mandatory Clean-Closure Attempt -Unless the discharger demonstrates, and the RWQCB finds, that it is infeasible to attempt clean-closure of the waste pile, then all waste materials and any components of the containment system which are contaminated by wastes shall be removed from the waste pile and discharged to an appropriate Unit. Remaining containment features shall be inspected for contamination and, if not contaminated, can be dismantled. Any soil or other materials beneath the closed waste pile that have been contaminated shall be removed for disposal at an appropriate Unit. If, after reasonable attempts to achieve clean-closure (as herein described), the discharger demonstrates that removal of all remaining contamination is infeasible, then the remaining portions of the waste pile (including all contaminated portions of the underlying and surrounding geologic materials) shall be closed as a landfill pursuant to ¶(a)(2) and s21090.
(2) Fallback Options -In cases where clean-closure [under ¶(a)(1)] is infeasible, the discharger shall propose for RWQCB approval either of the following options, as appropriate.
(A) Closure As a Landfill -A waste pile can be compacted, covered, and closed as a landfill s21090, provided that the discharger has met the requirements of ¶(a)(1), and further provided that the closed Unit either meets applicable standards for landfill Units in Articles 3 and 4 of Subchapter 2, Chapter 3, Subdivision 1 of this division (s20240 et seq.), or contains only dry waste and was not required to have a leachate collection and removal system under s20340(a).
(B) Closure As an LTU -Waste piles which contain only decomposable wastes may be closed as a land treatment unit under s21420(a)(2 - 4).(1. New section filed 6-18-97; operative 7-18-97 (Register 97, No. 25).)
Note: Authority cited: Section 1058, Water Code. Reference: Section 13172, Water Code; and Section 43103, Public Resources Code.
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