Geophysical Assessment of Soil Volumes Polluted with Metal Elements from Long-term Waste Water Irrigation

At WNW of Paris, a large area of coarse textured soil have been irrigated during one century (until 1999) with urban waste water so that large amount of soil organic matter (SOM), dissolved mineral compounds and metal pollutants accumulated in the surface horizons. One must now identify the volumes of polluted soils in order to favour as the stabilization or decontamination of these sites. Resistivity mapping and complementary magnetic properties measurements are used to assess the volume of polluted soil.