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Conductivity and transit time estimates of a soil liner

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Abstract

A field-scale soil linear was built to assess the feasibilty of constructing a liner to meet the saturated hydraulic conductivity requirement of the U.S. EPA (i.e., less than 1 ?? 10-7 cm/s), and to determine the breakthrough and transit times of water and tracers through the liner. The liner, 8 ?? 15 ?? 0.9 m, was constructed in 15-cm compacted lifts using a 20,037-kg pad-foot compactor and standard engineering practices. Estimated saturated hydraulic conductivities were 2.4 ?? 10-9 cm/s, based on data from large-ring infiltrometers; 4.0 ?? 10-8 cm/s from small-ring infiltrometers; and 5.0 ?? 10-8 cm/s from a water-balance analysis. These estimates were derived from 1 year of monitoring water infiltration into the linear. Breakthrough of tracers at the base of the liner was estimated to be between 2 and 13 years, depending on the method of calculation and the assumptions used in the calculation.

Suggested Citation

Krapac, I., Cartwright, K., Panno, S., Hensel, B., Rehfeldt, K., Herzog, B., 1990, Conductivity and transit time estimates of a soil liner, Optimizing the Resources for Water Management - Proceedings of the ASCE 17th Annual National Conference, Fort Worth, TX, USA, 17 April 1990 through 21 April 1990, p. 820-823.

Publication type Conference Paper
Publication Subtype Conference Paper
Title Conductivity and transit time estimates of a soil liner
ISBN 087262756X
Year Published 1990
Language English
Publisher Publ by ASCE
Publisher location Boston, MA, United States
First page 820
Last page 823
Conference Title Optimizing the Resources for Water Management - Proceedings of the ASCE 17th Annual National Conference
Conference Location Fort Worth, TX, USA
Conference Date 17 April 1990 through 21 April 1990
Additional publication details