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LNAPL Retention in Sandy Soil
Author(s) -
Ostendorf David W.,
Richards Robin J.,
Beck Frank P.
Publication year - 1993
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.1993.tb01820.x
Subject(s) - saturation (graph theory) , water table , environmental science , residual , soil water , surface tension , water content , traverse , soil science , gasoline , capillary pressure , hydrology (agriculture) , geotechnical engineering , geology , porous medium , chemistry , groundwater , porosity , physics , mathematics , geodesy , organic chemistry , algorithm , combinatorics , quantum mechanics , computer science
Abstract The vertical distribution of free and residual aviation gasoline, a light nonaqueous phase liquid (LNAPL), through the capillary fringe of a uniform, medium sand is measured and used to calibrate an existing model. The total saturation profile is governed by a classical moisture retention characteristic, with the matric pressure head scaled by LNAPL/air surface tension in the presence of free LNAPL and water/air surface tension in the absence of free LNAPL. The residual LNAPL is described by an empirical equation reflecting hysteretical trapping due to a fluctuating water table. The existing theory is calibrated with new and published field data at an aviation gasoline spill site in Traverse City, Michigan.