Environmental surveys
The investigations mainly concern
- Hydrogeological studies
- Design of preliminary investigations at sites suspected of contamination
- Plan for the characterization of polluted sites
- Healthcare-environmental risk analysis
- Studies for safety and remediation projects
- Environmental impact assessment studies (VIA)
The surveys constist of
- Drilling for ascertaining stratigraphic succession on land and at sea
- Monitoring through the installation of piezometers
- Monitoring for execution of the Soil Gas Survey (SGS)
- Undisturbed sampling of land on land with Schelby, Denison, Mazier, Osterberg, Craps samplers
- Taking carrots of soil at sea with Vibrocorer
- Sampling samples at sea with bucket and box corer
- Low flow purging in piezometers
- Water sample collection
- Determination of soil permeability coefficient by means of Lugeon tests, Lefranc tests and pumping tests
- Flow tests in wells and in the riverbed
- Sampling with direct push systems
- SGS probe installation
- Piezometric brushing