Statutes, codes, and regulations
New York Codes, Rules and Regulations
Title 6 - DEPARTMENT OF ENVIRONMENTAL CONSERVATIONChapter IV - QUALITY SERVICESSubchapter B - SOLID WASTESPart 363 - State Aid For Planning For Collection, Treatment And Disposal Of Refuse
Subpart 363-6 - Design, Construction And Certification Requirements
Section 363-6.5 - Landfill subgrade

N.Y. Comp. Codes R. & Regs. Tit. 6 §§ 363-6.5

Download
PDF
Current through Register Vol. 46, No. 45, November 2, 2024
Section 363-6.5 - Landfill subgrade
(a) The liner and leachate collection and removal system must be placed on a landfill subgrade that consists of an in-situ soil layer or select fill that is graded and prepared for landfill construction. A foundation-bearing capacity, stability and settlement analysis must be performed in accordance with subdivisions 363-4.3(b), (c), and (d) of this Part.
(b) Materials required. The landfill subgrade material must be free of visible organic material and consist of on-site soils, or select fill approved by the department. There must be a minimum thickness approved, pursuant to section 363-6.4 of this Part, below the landfill liner system consisting of low permeability soils with silty and clayey characteristics and which exhibit no large-scale, permeable deposits which could result in migration of contaminants off-site prior to detection and remediation.
(c) Construction requirements. The subgrade must be sufficiently dry to allow for construction activities and structurally sound to ensure that the first lift and all succeeding lifts of soil placed over it can be adequately compacted to the design requirements and to ensure stability of the landfill.
(d) Certification requirements. Before any material is placed over the landfill subgrade:
(1) the project engineer must inspect the exposed surface to evaluate the suitability of the subgrade to ensure that the surface is properly compacted, smooth, and uniform and that elevations are consistent with the department-approved drawings; and
(2) the subgrade must be tested for density and moisture content at a minimum frequency of nine tests per acre.

N.Y. Comp. Codes R. & Regs. Tit. 6 §§ 363-6.5

Adopted New York State Register September 20, 2017/Volume XXXIX, Issue 38, eff. 11/4/2017
Amended New York State Register June 7, 2023/Volume XLV, Issue 23, eff. 7/22/2023
Amended New York State Register June 21, 2023/Volume XLV, Issue 25, eff. 7/23/2023