Johan THIOLLIER is an experienced environmental project manager currently working as Chef de projets Environnement at FONDASOL since October 2023, specializing in contaminated sites and soils in accordance with NF X31-620-2 standards. Previously, Johan held the position of Ingénieur d’études at BURGEAP from April 2021 to April 2023, focusing on hydrology, environmental quality characterization of sediments, groundwater monitoring, and waste diagnostics prior to building deconstruction. Earlier experience includes a role at ABO GROUP France, where responsibilities encompassed project management in contaminated sites, groundwater surveillance, and geothermal feasibility studies. Johan's career began with a practical stage at SOLUSOL, conducting geotechnical studies on damaged structures. Johan holds an engineering degree in hydrology from Ecole Nationale Supérieure de Géologie, obtained between 2014 and 2017.