N.D. Admin. Code 33.1-20-05.1-04

Current through Supplement No. 395, January, 2025

Section 33.1-20-05.1-04 - Closure criteria

In addition to sections 33.1-20-04.1-05 and 33.1-20-04.1-09, at closure, an owner or operator shall cover an existing unit with a layer of compacted clay-rich earthen material having a thickness of twelve inches [30.5 centimeters] or more and free from cracks and extrusions of solid waste. A second layer of six inches [15.2 centimeters] or more of clay-rich soil material suitable for serving as a plant root zone must be placed over the compacted layer. At least six inches [15.2 centimeters] of suitable plant growth material must be placed over the covered landfill and the facility planted with adapted grasses. The total thickness of the final cover must be at least two feet [61.0 centimeters]. If a total cover thickness of four feet [1.2 meters] or more of clay-rich earthen material is achieved, including the six-inch layer of suitable plant growth material, compaction is not required.

N.D. Admin Code 33.1-20-05.1-04

Adopted by Administrative Rules Supplement 370, October 2018, effective 1/1/2019.

Amended by Administrative Rules Supplement 2020-377, July 2020, effective 7/1/2020.

General Authority: NDCC 23.1-08-03; S.L. 2017, ch. 199, § 1

Law Implemented: NDCC 23.1-08-03; S.L. 2017, ch. 199, § 23