S.C. Code Regs. § § 61-79.264.N.310

Current through Register Vol. 48, 12, December 27, 2024

Section 61-79.264.N.310 - Closure and postclosure care

(a) At final closure of the landfill or upon closure of any cell, (revised 12/92) the owner or operator must cover the landfill or cell with a final cover designed and constructed to:

(1) Provide long-term minimization of migration of liquids through the closed landfill;

(2) Function with minimum maintenance;

(3) Promote drainage and minimize erosion or abrasion of the cover;

(4) Accommodate settling and subsidence so that the cover's integrity is maintained; and

(5) Have a permeability less than or equal to the permeability of any bottom liner system or natural subsoils present.

(b) After final closure, the owner or operator must comply with all postclosure requirements contained in 264.117 through 264.120, including maintenance and monitoring throughout the postclosure care period (specified in the permit under 264.117). The owner or operator must:

(1) Maintain the integrity and effectiveness of the final cover including making repairs to the cap as necessary to correct the effects of settling, subsidence, erosion, or other events;

(2) Continue to operate the leachate collection and removal system until leachate is no longer detected;

(3) Maintain and monitor the leak detection system in accordance with section264.301(c)(3)(iv) and (4)(c)(3)(iv) and (4) and 264.303(c), and comply with all other applicable leak detection system requirements of this part;

(4) Maintain and monitor the groundwater monitoring system and comply with all other applicable requirements of subpart F of this part;

(5) Prevent runon and runoff from eroding or otherwise damaging the final cover; and

(6) Protect and maintain surveyed benchmarks used in complying with 264.309.

S.C. Code Regs. § 61-79.264.N.310

Amended by State Register Volume 10, Issue No. 1, eff January 24, 1986; State Register Volume 12, Issue No. 10, eff October 28, 1988; State Register Volume 14, Issue No. 11, eff November 23, 1990; State Register Volume 14, State Register Volume 16, Issue No. 12, eff December 25, 1992; State Register Volume 17, Issue No. 12, eff December 24, 1993.