Risk Assessment in Fractured Clayey Tills - Which Modeling Tools?

The article presents different tools available for risk assessment in fractured clayey tills and their advantages and limitations are discussed. Because of the complex processes occurring during contaminant transport through fractured media, the development of simple practical tools for risk assessment is challenging and the inclusion of the relevant processes is difficult.

Furthermore the lack of long-term monitoring data prevents from verifying the accuracy of the different conceptual models. Further investigations based on long-term data and numerical modeling are needed to accurately describe contaminant transport in fractured media and develop practical tools with the relevant processes and level of complexity.