Depollution – COGEDIM – Joinville Le Pont (94)

Description :


As part of the construction of a school and housing complex on the former ESSILOR site, the company COGEDIM has entrusted to the company VALGO the work of rehabilitation of the site following the discovery of the presence of a gaseous residual pollution right next to the impacted area under construction and development.


Type of pollution:


  • COHV (trichlorethylene constituting 60% of the mixture)





  • IN-SITU treatment by ventilation on two basement levels;
  • Installation of overhead air networks
  • Implementation of a KIT treatment unit
  • Well drilling in short mat
  • Machinery towing /lifting





Location: Joinville le pont

Duration of the works: 9 months