[     Business case listing ](/en-en/case-studies "  Business case listing")



 

 

 

## Challenge:

- The remediation to be carried out includes 5 source areas (cores), from which 5 pollution plumes have emerged, extending up to approximately 500 m.
- The contamination has also spread vertically down to the Boom clays, located at a depth of about 30 to 35 m.
- The area includes a dozen small businesses, a nature reserve, and a residential area, making the project complex.



 

 

 

 

 

 



 

## Solutions:

- Selective excavations were carried out in the source areas, followed by injection of chemical oxidant (Fenton's reagent) and/or a carbon source (glycerin) depending on the concentrations encountered in the groundwater.
- Biological barriers were placed in the plume areas where successive injection phases of carbon sources will take place (glycerin).
- The remediation also includes the monitoring and protection of a drainage system along the railway, hydraulic downstream of the site.