Section Env-Sw 805.05 - Liner System Design Standards(a) A liner system shall be comprised of the following components: (1) A liner which meets the requirements of Env-Sw 805.04;(2) A leachate collection and removal system which meets the requirements of Env-Sw 805.06; and(3) A leak detection and location system, if required by Env-Sw 805.07.(b) A landfill shall incorporate one or more liner systems, as specified in Env-Sw 805.12 through Env-Sw 805.15, based on the type of wastes to be received by the facility.(c) Multi-liner systems shall be designed to place one liner system over another liner system.(d) A single-lined facility shall incorporate one liner system as specified in Env-Sw 805.05(a).(e) A double-lined facility shall incorporate 2 liner systems as specified in Env-Sw 805.05(a), separated by drainage material as specified in (f) below.(f) Except as provided by (g) below, each liner within a liner system shall be covered in the base area by an overlying layer of select granular soil materials 12 inches in depth or more as required to: (1) Sustain anticipated loading conditions;(2) Protect the underlying liners from puncture, including simultaneous puncture of multi-liner systems;(3) Assist in the transmission of leachate in accordance with Env-Sw 805.06 and Env-Sw 806.05; and(4) At multi-liner facilities, limit the potential for hydraulic head to be concurrently experienced on an underlying liner in the event a leak develops in an overlying liner.(g) For multi-liner systems, geosynthetics may be used to separate the liners in areas of extended side slopes where placement and maintenance of granular materials is not possible or practical for reasons of stability.(h) The design of all liner systems incorporating geomembrane materials shall include calculations to demonstrate stability, but in no case shall be designed to exceed a slope of 2 horizontal to 1 vertical.(i) All liner systems shall be constructed by controlled methods, in accordance with a quality assurance/quality control plan established pursuant to Env-Sw 805.16.(j) Liner systems shall not be penetrated by any appurtenances including pipes in low areas or in any location where leachate might collect.N.H. Admin. Code § Env-Sw 805.05
#5172, eff 7-1-91; ss by #6535, INTERIM, eff 7-1-97, EXPIRES: 10-29-97; ss by #6619-B, eff 10-29-97; (See Revision Note at chapter heading for Env-Sw 800) ss by #8459, eff 10-28-05 (formerly Env-Wm 2505.05 )
Amended byVolume XXXIV Number 24, Filed June 12, 2014, Proposed by #10597, Effective 7/1/2014, Expires7/1/2024.