Task Oriented Hydrogeological Site Characterization: A Framework and Case Study in Predicting Contaminant Arrival Time

Abstract:

Hydrogeological site characterization requirements vary with different modeling and risk assessment goals. For example, predicting contaminant transport requires characterization of the spatial structure and variability of hydraulic conductivity. In light of the costs associated with site characterization, a framework for task oriented field campaign design would be advantageous. The current work highlights a general framework for task oriented characterization design aimed at balancing cost with risk and uncertainty. Also presented is a case study focusing on predicting contaminant arrival time, which often depends on characterizing the spatial distribution of high-permeability zones. The case study highlights how the framework can enable the most efficient use of new characterization technologies which can improve modeling campaigns by providing measurements of hydraulic conductivity with high spatial resolution.