JNP Group undertook ground investigation, designed a remediation strategy and supervised the validation work to decontaminate the site. The Made Ground at the site had been impacted with metallic and hydrocarbon contamination from underground tanks; isolated areas of asbestos were also been identified.

During the investigation work, the underground fuel tanks were found to have leaked into the surrounding natural ground of the Kempton Park Gravel Formation. Further investigation was undertaken to delineate the extent of this hydrocarbon plume.

Contaminated Made Ground and the hydrocarbon impacted natural ground was removed off site and transferred to a soil treatment facility, negating the need for capping layers in the areas of private gardens and public open space.

3D modelling of the soils on site by JNP, allowed the reuse of inert soils to execute the finished levels.Following regulatory approval to this, the importing of clean fill from offsite was avoided.