François-Xavier Marquis Sàrl

François-Xavier Marquis Sàrl was founded in 2007. Since its foundation, it has continued to develop and currently employs 9 university/EPF level staff.

Fields of activity
The office is composed of engineers specialised in geology, geotechnics, hydrogeology, hydrology and hydraulics. The office is able to provide design and implementation services in the following fields of activity

geotechnics and hydrogeology
Organisation and survey of boreholes and drillings - Determination of the geotechnical characteristics of soils and rocks - Dimensioning of foundation and support structures, special works (nailed walls, berlins, anchors, piles, soil improvements, etc.) - Dimensioning of earth and rockfill structures - Lowering of the water table - Two-dimensional numerical modelling in the field of geotechnics and underground hydraulics - Dimensioning of watertight screens
Natural hazards, flood hazards and watercourse management
Hazard mapping - Flood alarm and emergency response plans - Maintenance plans for watercourses and protective structures - Estimation of potential damage - Comprehensive analyses of catchment areas: determination of phenomena and hazards - Analyses and modelling of hydrological and geological hazards, dimensioning of protective structures - Concept and dimensioning of protective measures, safety projects, management and monitoring of works - Delimitation of water areas
geothermal energy and environment
Feasibility studies - Sizing of groundwater energy collection structures - Evaluation of thermal properties of the ground - Monitoring of geothermal probes in water-sensitive areas
Water and soil management and protection - Impact studies and notices - Studies and remediation of polluted sites - Monitoring of demolition works - Environmental monitoring of works - Delimitation of drinking water catchment protection zones - Sizing of retention and infiltration works - Studies on building pollutants (asbestos, lead, PCBs, radon, etc.)

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