Conductivity and transit time estimates of a soil liner
By: I.G. Krapac, K. Cartwright, S.V. Panno, B.R. Hensel, K.H. Rehfeldt, and B.L. Herzog
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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.
| 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 |
| Google Analytic Metrics | Metrics page |