40 CFR § 264.111 - Closure performance standard.

---
identifier: "/us/cfr/t40/s264.111"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 264.111 - Closure performance standard."
title_number: 40
title_name: "Protection of Environment"
section_number: "264.111"
section_name: "Closure performance standard."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "I"
subchapter_name: "SOLID WASTES"
part_number: "264"
part_name: "STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 6905, 6912(a), 6924, 6925, and 6939g."
regulatory_source: "45 FR 33221, May 19, 1980, unless otherwise noted."
cfr_part: "264"
---


# 264.111 Closure performance standard.

The owner or operator must close the facility in a manner that:

(a) Minimizes the need for further maintenance; and

(b) Controls, minimizes or eliminates, to the extent necessary to protect human health and the environment, post-closure escape of hazardous waste, hazardous constituents, leachate, contaminated run-off, or hazardous waste decomposition products to the ground or surface waters or to the atmosphere; and

(c) Complies with the closure requirements of this part, including, but not limited to, the requirements of §§ 264.178, 264.197, 264.228, 264.258, 264.280, 264.310, 264.351, 264.601 through 264.603, and 264.1102.

[51 FR 16444, May 2, 1986, as amended at 52 FR 46963, Dec. 10, 1987; 57 FR 37265, Aug. 18, 1992; 71 FR 40272, July 14, 2006]