Design and Performance Monitoring of Clay-Lined Landfillsby Mark E. Gordon, Wisconsin Dep of Natural Resources, Madison, WI, USA,
Abstract: The use of thick clay liners has been applied to Wisconsin landfills for over a decade. Currently, there are over 35 solid waste disposal facilities in Wisconsin which have been constructed utilizing a clay liner design. This has resulted in considerable design, construction, quality control and operational experience along with a substantial amount of performance monitoring data. Using this information, it is concluded that thick clay liners can provide a low hydraulic conductivity barrier to leachate migration at landfills used for the disposal of municipal and many non-hazardous industrial wastes. This paper discusses the development of Wisconsin's clay liner specifications and recommends design concepts for engineered landfills. Information on construction, quality control testing and performance monitoring of clay-lined landfills is also presented. Actual data from case studies of Wisconsin facilities are used to supplement the discussion.
Subject Headings: Landfills | Clays | Clay liners | Soil treatment | Soil strength | Waste disposal | Leachates | Wisconsin | North America | United States
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