N.Y. Comp. Codes R. & Regs. Tit. 6 §§ 363-6.10

Current through Register Vol. 46, No. 45, November 2, 2024

Section 363-6.10 - Soil drainage layers

In addition to the requirements of subdivision 363-6.6(a) of this Subpart, all soil drainage material used in the primary and secondary leachate collection and removal systems of the landfill must conform to the following requirements.

(a) Materials required. The soil drainage layer must be free of any organic material, have less than five percent by weight pass the No. 200 sieve after placement, and have no more than 15 percent calcium carbonate equivalent as determined by appropriate test methods using a solution with a pH representative of landfill leachate.

(b) Construction requirements.

(1) The soil drainage layer must be placed in a manner to minimize defects to the underlying geomembrane or other geosynthetic materials.

(2) The soil drainage layer must be placed in a manner to achieve a minimum slope of two percent.

(c) Certification requirements.

(1) The project engineer must approve the quality control testing results of any soil drainage materials and ensure that the materials meet the placement, hydraulic conductivity, and thickness requirements of section 363-6.6 of this Subpart and the requirements of subdivision 363-6.10(a) of this section.

(i) A particle size analysis of the soil drainage layer material must be submitted to the project engineer for approval for each borrow source prior to installation, and during installation at a frequency of at least one test for every 1,000 cubic yards of material placed.

(ii) A laboratory constant-head permeability test for a soil drainage layer sample must be submitted to the project engineer for approval for each borrow source prior to installation and at a frequency of at least one test for every 2,500 cubic yards of material delivered, and after placement at a frequency of at least one test for every 2,500 cubic yards of material placed.

(iii) The project engineer must certify that the requirements of subdivision 363-6.10(a) and section 363-6.6(a)(3) and (4) of this Subpart are met.

(2) The project engineer must certify that post-construction care procedures are carried out which, at a minimum, protect the soil drainage layers from fines related to water and wind-borne sedimentation.

(3) Quality assurance testing must ensure that the material is placed in accordance with the requirements of the engineering drawings, reports, and specifications.

N.Y. Comp. Codes R. & Regs. Tit. 6 §§ 363-6.10

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