ADDITIONAL OPERATING REQUIREMENTS—LINER SYSTEM
§ 288.431. Scope and requirements.
(a) A person or municipality operating a Class I residual waste landfill shall design, construct, operate and maintain a liner system for disposal areas of a residual waste landfill or components thereof under this section and § § 288.432—288.440.
(b) The liner system for a Class I residual waste landfill shall include the following elements:
(1) The subbase, which is the prepared layer of soil or earthen materials upon which the remainder of the liner system is constructed.
(2) The secondary liner, which is a continuous layer of synthetic materials or remolded clay placed on the subbase.
(3) The leachate detection zone, which is the prepared layer placed on top of the secondary liner and upon which the primary liner is placed, and in which a leachate detection system is located.
(4) The primary liner, which is a continuous layer of synthetic materials placed on the leachate detection zone.
(5) The protective cover and leachate collection zone, which is a prepared layer placed over the primary liner in which a leachate collection system is located.
(c) Either the primary liner or the secondary liner shall be a composite liner, which is a continuous layer of synthetic materials over earthen materials.
Cross References This section cited in 25 Pa. Code § 287.114 (relating to interim operational requirements for unpermitted processing or disposal facilities); 25 Pa. Code § 287.116 (relating to interim operational requirements); 25 Pa. Code § 288.412 (relating to liner system and leachate control plan); and 25 Pa. Code § 288.421 (relating to basic limitations).
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