Background

This case of descriptive soil research partially formed the foundation of the current iFLUX technology. During her PhD, Goedele received the exceptional opportunity to characterise and follow the problem of contamination of this site. This constituted the first time the added value of flux measurements in the plume zone was being examined, where it was previously only used in the source zone.  The flux results delivered additional insights to limit plume dispersion.

Challenge

The plume of VOCI, found in the alluvial plain of the Seine, was originally estimated at a length of 350m and a width of 250m. Strong flow effects were observed in the proximity of the river. At the launch, great uncertainty existed about the influence of these effects.

Our solution

All together we installed over 50 flux samplers in eight different observation tubes. The obtained flux results were for the first time validated in a plume zone and delivered new insights into the contamination situation, complementary to the traditional soil and groundwater concentration data. During the flux measurement campaign, we mainly focussed on perchlorethylene, trichlorethylene and the decomposition parameters cis&trans-1,2-dichlorethylene and vinyl chloride.

The research and validated results were meticulously written down in a scientific report.

Attachements

Image Dispersion of VOCI plume in the direction of the nearby river Seine Image 1
Image Dispersion of VOCI plume in the direction of the nearby river Seine Image 2
Image Dispersion of VOCI plume in the direction of the nearby river Seine Image 3
Image Dispersion of VOCI plume in the direction of the nearby river Seine Image 4
Image Dispersion of VOCI plume in the direction of the nearby river Seine Image 5