---
kind: "section"
citation: "40 C.F.R. § 264.310"
title: "40"
number: "264.310"
heading: "Closure and post-closure care."
url: "https://uscodex.org/cfr/40/264.310"
---

# §264.310. Closure and post-closure care.

- (a) At final closure of the landfill or upon closure of any cell, 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 post-closure requirements contained in [§§ 264.117 through 264.120](/cfr/40/264.117..264.120.md), including maintenance and monitoring throughout the post-closure care period (specified in the permit under [§ 264.117](/cfr/40/264.117.md)). 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 §§ [264.301(c)(3)(iv)](/cfr/40/264.301.md?p=c-3-iv) and [(4)](/cfr/40/264.301.md?p=c-3-4) and [264.303(c)](/cfr/40/264.303.md?p=c), and comply with all other applicable leak detection system requirements of this part;
  - (4) Maintain and monitor the ground-water monitoring system and comply with all other applicable requirements of subpart F of this part;
  - (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 [§ 264.309](/cfr/40/264.309.md).

## Notes

### Amendments

[47 FR 32365, July 26, 1982, as amended at 50 FR 28748, July 15, 1985; 57 FR 3491, Jan. 29, 1992]

### Source

Source: 47 FR 32365, July 26, 1982, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 6905, 6912(a), 6924, 6925, and 6939g.

### Source

Source: 45 FR 33221, May 19, 1980, unless otherwise noted.

### Amendments

[47 FR 32365, July 26, 1982, as amended at 50 FR 28748, July 15, 1985; 57 FR 3491, Jan. 29, 1992]