A method for designing detection monitoring networks in layered aquifers with non-uniform flow

A method for designing detection monitoring networks in layered aquifers with non-uniform flow

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Article ID: iaor20003628
Country: United States
Volume: 48
Issue: 4
Start Page Number: 341
End Page Number: 355
Publication Date: Oct 1996
Journal: Journal of Environmental Management
Authors:
Keywords: programming: integer, geography & environment
Abstract:

An integer programming method was devised to locate detection monitoring wells in layered aquifers. The method is applicable to aquifers with nonuniform groundwater flow, and it does not require that a compliance boundary by linear or perpendicular to the direction(s) of groundwater flow. In each layer, monitoring sites are defined along curvilinear transects that parallel equipotential lines. The model can be formulated to allocate wells to the transect with the highest detection efficiency, or to establish multiple lines of defense against contaminant migrating to a compliance boundary. Detection efficiencies of alternative monitoring transects are calculated from parameters obtained via numerical modeling of contaminant transport. These parameters include the narrowest plume that could traverse a monitoring transect, and the zone width of potential contaminant migration at the transect. Problem formulations are compact, and computational requirements are low relative to alternative approaches for designing detection monitoring networks in aquifers. An application to a glacial outwash aquifer demonstrates the utility of the method.

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