In February 2014, INNOGEO carried out a geophysical campaign as part of the overhaul of the wastewater treatment plant of Meulan – Hardricourt – Les Mureaux (SIAMHLM), in the Paris region.
Investigations were carried out on the discharge pipeline routing. It consisted mainly of a study by seismic refraction of the geology made up of alluvium above the Nappe de La Craie. PS tests were also operated to determine the depth of the pile-planks.
INNOGEO deployed specific nautical resources to operate the compressed-air seismic source, to place the sensor lines at the river bed, and for on-board data acquisition.