Design of Final Covers for Landfills

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by Houshang Dezfulian, Woodward-Clyde Consultants, Santa, Ana, CA, USA,

Document Type: Proceeding Paper

Part of: Environmental Engineering:

Abstract: Final covers or caps are incorporated into a completed landfill to limit the amount of moisture percolation through waste materials. A properly designed final cover system provides the first line of defense against the generation of significant quantities of leachate from a landfill. Natural clay caps, processed clay caps or polymeric membrane caps may be used as part of the final cover system. This paper is a review of design considerations and guidelines for the design of final cover systems. Case studies involving Woodward-Clyde Consultants' experience with the design of recently completed final cover systems are described.

Subject Headings: Landfills | Hazardous wastes | Environmental issues | Hazardous materials | Material properties | Soil pollution | Clays | Case studies |

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