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Waste Management & Research, Vol. 3, No. 1, 143-148 (1985)
DOI: 10.1177/0734242X8500300115

Landfill Caps: Long Term Investments in Need of Attention

David I. Johnson

Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824, U.S.A.

Dean H. Urie

Department of Forestry, Michigan State University, East Lansing, MI 48824.

The various physical and biological forces which will degrade landfill caps are reviewed. In particular soil erosion may be accelerated by the presence of impermeable liners too close to the surface. Water penetration of clay surface soils may be augmented by cracks caused by drying and by holes produced by earthworms, burrowing mammals and plant roots. Some research needs are outlined to help maintain landfills over long periods.

Key Words: Landfill: erosion • vegetation • mammals • worms. Long-term control.


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