Factory dedicated to the production of synthetic resin from natural resin. According to various reports, this company has been operating since approximately the 1950s. Since the beginning of its activity, drums containing waste or various raw materials were buried and later excavated. Historically, discharges also occurred at the factory’s wastewater treatment plant (EDAR). The historic contamination hotspots were removed and sealed with concrete. A groundwater monitoring and control program has been implemented to assess the evolution of the contaminants present. The following parameters are monitored: TPH, BTEX, PAHs, aldehydes, dioxanes [AC1], and free phase. The contamination plume around points where free phase presence is detected (MW-4 and MW-7) is also delineated, with the installation of 2 additional monitoring points. Currently, actions are carried out using MPE, in relation to the established environmental improvement. The objective is to reverse the environmental situation of the subsurface at the site where a minimal presence of free phase was detected, as well as concentrations exceeding the defined target levels.

CONCEPTUAL FRAMEWORK This project aims to achieve the environmental recovery of the area affected by organochlorine solvents at the Engine Factory. The contamination originates from industrial activities carried out in the 1980s and 1990s, leading to soil and groundwater pollution. The site has a complex hydrogeology with a multilayer aquifer affected in its first two levels. Conventional decontamination techniques have proven ineffective, prompting the development of an R&D project to apply a new technique adapted to the site: MOUSSE 3D.  APPLIED REMEDIATION TECHNIQUES  CONTAMINANT TO BE TREATED  The main contaminant present at the site is organochlorine solvents, specifically:  FINAL OBJECTIVE Develop and implement an effective remediation strategy to:  Optimize treatment time and efficiency to achieve environmental recovery of the site.