How is the leachate contained, and what is the Leachate Containment Wall made of?

Leachate containment is in part accomplished by a subsurface cut–off wall that serves as a barrier to restrict the exchange of water between the landfill and the surrounding area. The cut–off wall is connected to low–permeability soils that underlie the site and that already serve as a natural liner. The cut–off wall is constructed of a clay material and soil or cement bentonite.

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