Chemicals applied to soils in-situ or ex-situ are used to oxidise organic contaminants causing complete breakdown/removal. The oxidation process is due to Fenton's Reaction using hydrogen peroxide. Final residual breakdown products are carbon dioxide and water. When oxidising chlorinated compounds, breakdown products may require monitoring prior to complete removal.
For in-situ works, off-gasses from the oxidation reactions can be captured by a vacuum extraction system designed specifically to suit soil conditions.

Particularly rapid and thorough breakdown of contaminants which may also increase biodegradation activity by the addition of electron receptors. The oxidation process is suitable for dissolved and adsorbed phase contaminants and can be operated discretely during or after a site has been developed. Typically, an operational system can be less disruptive than other in-situ techniques.