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1L - Exposure Modelling (WEP/84) TERRACE - TErrestrial Runoff modelling for Risk Assessment of Chemical Exposure. Worrall, Fred1, White, Sue2, Hollis, John 2, Beaudin, Isabelle2, Hallett, Steve2, Cobby, David 2, Whelan, Mick3, 1 University of Durham, Durham, County Durham, UK2 Cranfield University, Silsoe, Bedfordshire, UK3 Unilever, Sharnbrook, Bedfordshire, UK ABSTRACT- The TERRACE (Terrestrial Runoff Modelling for Risk Assessment of Chemical Exposure) project is one of a number of studies funded by the European Chemical Industries Council (CEFIC) as part of their Long-range Research Initiative. Its objective is to adapt and test simulation models for the evaluation of diffuse-source chemical runoff at the regional scale across Europe. The models will calculate pollutant loads and concentrations for input to GREAT-ER, the Geography-referenced Regional Exposure Assessment Tool for European Rivers. GREAT-ER predicts the effects of waste water treatment and in-stream transport on concentrations of down-the-drain chemicals in river networks. The TERRACE model will be integrated with the GIS, providing estimates of diffuse runoff contamination as input to the river pollution model. The project is split into three distinct phases. In the first year of the project, a review of available models was carried out and three models with distinct modelling approaches were selected for testing. Year two saw further development of the preferred model SWAT-2000, through development of European databases (Beaudin et al., 2002). In our third and final year the SWAT-2000 package has been applied to catchments in the UK, as a preliminary demonstration of capability. This poster describes the TERRACE programme and outlines the technical issues which have been tackled. Key words: risk assessment, diffuse pollution, SWAT-2000, modelling |
