R315-264-310. Closure and Post-Closure Care

  (a) At final closure of the landfill or upon closure of any cell, the owner or operator shall 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 shall comply with all post-closure requirements contained in Sections R315-264-117 through 120, including maintenance and monitoring throughout the post-closure care period, specified in the permit under Section R315-264-117. The owner or operator shall:

  (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 Subsections R315-264-301(c)(3)(iv) and (4) and R315-264-303(c), and comply with all other applicable leak detection system requirements of Rul3 R315-264;

  (4) Maintain and monitor the ground-water monitoring system and comply with all other applicable requirements of Sections R315-264-90 through 101;

  (5) Prevent run-on and run-off from eroding or otherwise damaging the final cover; and

  (6) Protect and maintain surveyed benchmarks used in complying with Section R315-264-309.