Estimating contaminant-flushing rates for heterogeneous aquifers
by Jeffrey P. Orient
International Journal of Environment and Pollution (IJEP), Vol. 29, No. 4, 2007

Abstract: Groundwater remediation evaluations typically include cleanup time projections. Current batch flushing-rate equations and analytical models often used to estimate groundwater cleanup rates typically underestimate cleanup times, with a major factor the flawed assumption of aquifer homogeneity. Numerical modelling of groundwater flow and contaminant transport is a time-intensive and costly alternative. An analytical modelling approach has been developed to quickly and cost effectively approximate realistic contaminant cleanup rates, factoring aquifer heterogeneity into the process. The mathematical relationships predict residual dissolved concentrations and average pumped concentrations over time, and also the time required to meet a concentration standard.

Online publication date: Tue, 26-Jun-2007

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