Characterisation of a surface water network through tracer testing to improve water supply management.

This involves hydrological analysis of connectivity and flow velocity, supported by a high resolution monitoring network of 12 STREAM® fluorometers.

Hydrogeological expertise for the construction of a metro tunnel using a ground freezing technique.

This includes characterisation of groundwater flow in alluvial layers using tracer tests, pumping well tests and natural flow conditions. Key aspects include determination of permeability, effective porosity, flow velocity, hydrogeological modelling and piezometric monitoring.

Leak detection in an artificial pond in the Paris region using multi-hydrogeological tracing with different tracers to locate the leak and optimise repair work.

Characterisation of flows in a sewer system using tracer tests and in-situ monitoring to detect leaks after heavy inundations and to optimise the use of organic sanitation products.

Characterisation of potential karst features in chalk in a well field producing 2 million m³/year through dye tracing, monitoring in production wells and natural sources to manage organic contamination risks.

Hydrological and hydrogeological consultancy for real estate projects, including studies on flood hazards, stormwater management, and risk management in flood zones.

Assessment of groundwater availability for a Walloon cooperative hatchery project, including hydrogeological study, flow measurements, dye tracing, resource assessment and analysis of water supply from groundwater catchment.

A hydrological study for an urban planning permit can include a flood hazard analysis, water management (stormwater, wastewater, reclaimed water), assessment of site constraints (geology, hydrology, hydrogeology), permeability testing, flow measurements and dimensioning of infiltration or buffer systems.

We can also provide project assessment and advice on flood mitigation and stormwater basin design.

Dye tracing in an open-loop geothermal doublet to compare model predictions with real data and to optimise the geothermal system.

Fluorescent dye tracing helps map subsurface flow paths and provides real-time data on groundwater movement, especially in complex environments.

Tracer test to obtain detailed knowledge of the hydrogeology of a karst system in order to implement water buffer measures.

These nature-based solutions would reduce the risk of flooding and allow the water table to be recharged.

Dye tracing to determine preferential flow paths and infiltration rates to assess groundwater vulnerability to nitrate pollution in karst systems.

The study aims to provide recommendations for the protection of water resources, particularly in Wallonia.