Understanding heterogeneity and structure in urban environments: a tool for the assessment of risk and interpretation of geochemical data

Understanding the spatial and temporal development of anthropogenic and natural soil systems along with associated geological deposits has long been acknowledged as important underpinning information in the planning and geotechnical assessment of new urban developments. However, such information has only rarely been linked with the interpretation and use of urban geochemical surveys during the risk assessment process. In recognition of this the British Geological Survey (BGS) have been developing a portfolio of supporting techniques and methodologies to assist in (a) developing a better understanding of the nature, history and potential future of the urban subsurface and (b) integrating this knowledge into a risk-assessment framework that may be used in a predictive manner with a variety of potential scenarios. In this poster we present some examples of BGS studies in which we are developing techniques that better enable the incorporation of geochemistry and associated risk assessment models with other contextual data from a range of urban environments. It is proposed that such integrated datasets should form the backbone to a range of scenario development and planning models enabling more accurate prediction of risk and options for its mitigation prior to, during and after extreme events.