N.Y. Comp. Codes R. & Regs. Tit. 6 §§ 363-6.9

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

Section 363-6.9 - Geocushion material

An appropriately designed and specified geocushion of sufficient weight to prevent deformation and damage must be placed above any geomembrane.

(a) Materials requirements. Needle-punched, nonwoven geocushion material must be used. Documentation must be provided by the manufacturer indicating that each roll has been inspected at the point of manufacturing for the presence of broken needles using an in-line metal detector. Every roll accepted at the site must be labeled with the manufacturer's name, including geotextile style and type, lot and roll numbers, and roll dimensions (length, width, and gross weight). The geocushion material must be demonstrated to be chemically compatible with waste and leachate with which it will come in contact.

(b) Construction requirements.

(1) During placement, stones, excessive dirt, or moisture must not be entrapped either within or beneath the geocushion materials.

(2) The geocushion materials must be placed with minimal wrinkles or folds.

(3) Geocushion materials must be connected or seamed together using methods approved by the department.

(4) All rolls of geocushion materials received and stored at the landfill must be enclosed in protective wrapping such as the original, unopened packaging or an opaque, waterproof tarpaulin to ensure protection from direct sunlight, ultraviolet radiation, precipitation, flames or welding sparks, temperatures in excess of 160° F and below 32° F, mud, debris and other deleterious materials, and any other environmental condition that may damage the physical property values of the material. The storage location must be stable, dry, and well-drained. The surface on which the material is stored must be free of sharp objects. Rolls of geocushion materials must not be stored in stacks more than three tiers high. Extended outdoor storage of rolls must not exceed manufacturer's recommendations or nine months, whichever is less. For storage periods longer than manufacturer's recommendations or nine months, geocushion rolls must be stored off the ground under an additional cover or tarpaulin beyond the manufacturer's wrapping or placed in an enclosed structure.

(c) Certification requirements. The project engineer must provide:

(1) certification that all geocushion materials placed on the site have been inspected by the manufacturer and at the job site for needles and sheet defects;

(2) verification that the physical and mechanical properties of the designed geocushion material were supplied and installed per the project specifications; and

(3) certification that applicable geosynthetic quality control testing was performed in accordance with the requirements of section 363-6.8(c)(1) of this Subpart for any geocushion materials.

N.Y. Comp. Codes R. & Regs. Tit. 6 §§ 363-6.9

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