Abstract
Historically, industries were in harbour areas of cities for easy access to transportation of resources. Today, transforming former industrial areas into living spaces has become an attractive business. However, this transformation has often been challenged by high levels of soil contamination caused by the industrial use. Remediation measures are mandatory to ensure the public safety in the redeveloped areas. Detailed information about the contaminant type, distribution, and transport mechanisms is required to address the contamination issues. This paper suggests a workflow for investigations assisting decision making for construction work in redeveloped industrial areas. The workflow is applied to Horsens harbour (Denmark). In this area, renovation of the harbour walls introduces the risk of spreading of contamination to planned construction areas. The study demonstrates how detailed hydrogeological information about the site allows for scenario modelling of contaminant transport, guiding remediation efforts and aiding decision makers in developing the harbour area.
Highlights
Groundwater in urban areas is exposed to anthropogenic influences and is often contaminated (Vasin et al, 2016)
This paper evaluates the resultant shape of a contamination plume simulated for different possible scenarios suggested in the context of renovation and construction works planned in the Horsens harbour area
This paper focuses on the hydrological parametrization of the 3D geological model and simulation of different scenarios in FEFLOW
Summary
Groundwater in urban areas is exposed to anthropogenic influences and is often contaminated (Vasin et al, 2016). The practical contaminated site investigations and measures to determine the transport of contaminants in urban areas are necessary and have been scientifically scrutinised for several years (Bauer et al, 2004; Greis et al., 2012; Trowsdale and Lerner, 2007; Vasin et al, 2016). Insufficient information about the hydrogeological setting and the numerical transport model have made the evaluation of contaminant concentration and distribution significantly uncertain (Hansen et al, 2019; Yang et al, 1999). Knowledge of the hydrogeological setting in urban areas is crucial because it forms the basis for understanding the fate and distribution of the contaminants. It is important to Mapping contaminant plumes provides a better understanding of contaminated sites which enables include those features in the urban models (Andersen et al, 2018)
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