Surface cleaning

Treating, temporary storing and disposal of contamined materials.

Railway ballast treatment

Delivery of landfill replacement and highway construction materials.


Surface washing system

Surfaces that are either organically contaminated or contaminated with heavy metals are treated using chemo-physical processes so that 90% of the materials are returned to the raw material cycle.


  • Dredged material removal
  • Transport management
  • Port handling

Biological treatment

Surfaces contaminated with hydrocarbons are treated using biological pollutant degradation processes. Surfaces contaminated with PAH or lightly volatile halogenated hydrocarbons are cleaned via vapour extraction.

Mechanical treatment

Excavated residues are treated using soil-physics techniques. Construction waste and sieved oversized particles are broken up so they can be reused for roadbeds.