Alternative Landfill Covers Pass the Test

by Stephen F. Dwyer, Principal Investigator; Sandia Natl. Labs., Albuquerque, NM,


Serial Information: Civil Engineering—ASCE, 1998, Vol. 68, Issue 9, Pg. 50-52


Document Type: Feature article

Abstract:

Researchers at the Sandia National Laboratories in Albuquerque, N.M., are conducting a large-scale field demonstration comparing final landfill cover designs in arid and semi-arid regions. The demonstration is intended to evaluate various cover designs based on their respective water balance performance, ease of construction and cost. The covers being monitored include a soil cover, a conventional compacted clay cover, a geosynthetic clay liner, a capillary barrier, an anisotropic barrier, and an evapotranspiration cover. Active monitoring continues, but preliminary data after one year of operation are starting to pay off.

Subject Headings: Compacted soils | Clay liners | Landfills | Clays | Arid lands | Water balance | Laboratory tests

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