What is it?
Soil that’s been affected by substances and pollutants, comprising its natural composition and potentially posing a risk to human health, ecosystems and the environment. Common contaminants can include:
- Heavy metals – Lead, Mercury, Cadmium, Chromium, Arsenic
- Petroleum Hydrocarbons – Benzene, Toluene, Ethylbenzene, Xylene (BTEX), Polycyclic Aromatic Hydrocarbons (PAHs)
- Pesticides - DDT (Dichlorodiphenyltrichloroethane), Lindane, Chlordane, Aldrin, Dieldrin
- Polychlorinated Biphenyls (PCBs) - PCB-28, PCB-52, PCB-101, PCB-138, PCB-180
- Per- and Polyfluoroalkyl Substances (PFAS) - Perfluorooctanoic Acid (PFOA), Perfluorooctanesulfonic Acid (PFOS), Perfluorohexanesulfonic Acid (PFHxS), Perfluorononanoic Acid (PFNA), Perfluorobutanesulfonic Acid ()
How we treat N120 contaminated soil:
Our treatment involves processes that help reduce or eliminate the presence of harmful contaminants in the soil. It can range from:
- Excavation and Disposal - Contamination is localised and soil removal is feasible, excavation is a common method. Contaminated soil is physically removed from the site and transported to a licensed disposal facility.
- Soil Flushing - flushing uses water or other solvents to remove contaminants from the soil. The process leaches contaminants, which are then separated from the soil through physical or chemical means. This method is suitable for soils contaminated with water-soluble substances.
- Soil Washing – Non destructive method to agitate the particles within the soil which then allows for the contaminants to be removed from the water phase leaving soil in tact. Suitable for PFAS substances and certain hydrocarbons
