Conceptual model of leachate migration in a granular aquifer derived from the integration of multi-source characterization data (St-Lambert, Canada)

摘要: Numerical models encompassing source zones and receptors, based on representative conceptual accounting for aquifer heterogeneity, are needed to understand contaminant migration fate; however, characterization seldom provides the necessary data. This study aimed develop a workflow field data integration, which could: (1) be adapted definition of subwatershed-scale heterogeneity (over 10 km2) (2) adequately support mass transport model development. The involved investigation shallow granular in 12-km2 subwatershed Saint-Lambert-de-Lauzon, Canada, decommissioned landfill is emitting leachate plume managed by natural attenuation. Using proven methods, sequence was designed optimize each method terms location, scale acquisition, density quality. emphasis acquisition detailed indirect geophysical that were integrated with direct hydraulic geochemical report focuses first qualitative geostatistical integration steps leading development hydrogeological model. prerequisite further steps: prediction hydrofacies conductivity (K), simulations K, studies processes numerical modeling.