6 CRR-NY 363-6.9NY-CRR
6 CRR-NY 363-6.9
6 CRR-NY 363-6.9
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.
Only needle-punched, nonwoven geocushion material may 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) All rolls of geocushion materials received and stored at the landfill must be enclosed in protective wrapping that is opaque and waterproof. Outdoor storage of rolls must not exceed manufacturer’s recommendations or nine months, whichever is less. For storage periods longer than nine months, rolls must be stored off the ground under an additional cover or tarp beyond the manufacturer’s wrapping or be placed within an enclosure.
(2) During placement, stones, excessive dirt, or moisture must not be entrapped either within or beneath the geocushion materials.
(3) The geocushion materials must be placed with minimal wrinkles or folds.
(4) Geocushion materials must be connected or seamed together using methods approved by the department.
(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 quality control testing was performed in accordance with the requirements of section 363-6.8(c)(1) of this Subpart for any geocushion materials
6 CRR-NY 363-6.9
Current through March 15, 2022
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