---
kind: "section"
citation: "40 C.F.R. § 265.310"
title: "40"
number: "265.310"
heading: "Closure and post-closure care."
url: "https://uscodex.org/cfr/40/265.310"
---

# §265.310. 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 [§§ 265.117 through 265.120](/cfr/40/265.117..265.120.md) including maintenance and monitoring throughout the post-closure care period. The owner or operator must:
  - (1) Maintain the integrity and effectiveness of the final cover, including making repairs to the cover as necessary to correct the effects of settling, subsidence, erosion, or other events;
  - (2) 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) of this chapter and 265.304(b), and comply with all other applicable leak detection system requirements of this part;
  - (3) Maintain and monitor the ground-water monitoring system and comply with all other applicable requirements of subpart F of this part;
  - (4) Prevent run-on and run-off from eroding or otherwise damaging the final cover; and
  - (5) Protect and maintain surveyed benchmarks used in complying with [§ 265.309](/cfr/40/265.309.md).

## Notes

### Amendments

[50 FR 16048, Apr. 23, 1985, as amended at 57 FR 3495, Jan. 29, 1992]

### Authority

Authority: 42 U.S.C. 6905, 6906, 6912, 6922, 6923, 6924, 6925, 6935, 6936, 6937, and 6939g.

### Source

Source: 45 FR 33232, May 19, 1980, unless otherwise noted.

### Amendments

[50 FR 16048, Apr. 23, 1985, as amended at 57 FR 3495, Jan. 29, 1992]