Optimizing environmental monitoring networks with direction-dependent distance thresholds

In the direction-dependent approach to location modeling developed herein, the distance within which a point of demand can find service from a facility depends on direction of measurement. The approach is effective for environmental location problems in which an underlying process with a prevailing gradient (e.g., wind or water flow) influences the interaction between sites in a modeled field. The utility of the approach is illustrated through an application to groundwater remediation.