ABSTRACT
Several techniques that are complementary can be used to assess the extent of contaminant transport in barrier systems. Due to the long time interval it takes for a contaminant to travel through even small distances in low https://www.w3.org/1998/Math/MathML"> < 10 - 5 c m / s https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429080050/6559e41b-64b9-4256-96a3-5980cbb6d757/content/eq86.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> -permeability materials, several numerical formulations, most of which are based on solutions for the one-dimensional advection-dispersion equation, have been developed for use in scaling contaminant concentrations in time and space within a barrier. Examples are the use of solutions provided by (1-4).
