1. Dispersion modeling and use of GIS for dioxin exposure assessment in the vicinity of a municipal solid waste incinerator: a validation study. JF Viel, N Floret, E Lucot, JY Cahn, PM Badot, F Mauny University of Franche-Comté, France

4. Materials and methods

7. Southwest of the MSWI, looking in the northeast direction

8. Northeast of the MSWI, looking in the southwest direction

10. Modeled average ground-level dioxin concentrations < 0.0001 pg/m 3 0.0001 - 0.0002 pg/m 3 0.0002 - 0.0004 pg/m 3 0.0004 - 0.0016 pg/m 3 Dioxin concentrations Municipal solid waste incinerator Doubs river City boundary Soil samples 5 km N

13. Results

15. Adjusted means of log-transformed dioxin concen-tration per modeled dioxin exposure categories Dioxin exposure Ln I - TEQ (ln pg /g dry matter ) 0 1 2 - 1 Very low Low Intermediate High

16. Ln WHO-TEQ and independent variables Complex topography (r² = 30.5 %) P -value ß Variable 0.05 -0.01 altitude Geomorphology parameters 0.23 0.01 organic carbon concentration Soil parameters 0.19 0.47 high 0.02 0.87 intermediate 0.17 0.49 low - - very low Modeled dioxin exposure

17. Ln WHO-TEQ and independent variables Simple topography (r² = 52.2 %) P -value ß Variable 0.01 -0.01 altitude Geomorphology parameters 0.35 0.01 organic carbon concentration Soil parameters 0.001 1.21 high 0.08 0.56 intermediate 0.40 0.23 low - - very low Modeled dioxin exposure

18. Discussion

22. Conclusion

25. Thank you for your kind attention.