PuriSoil is an eco-friendly technology. At the site that has to be cleaned up pipes are inserted in the ground to a depth lower than the contaminated layer of soil. Air is then injected into the soil through the pipes. A specially developed bio-active material (PuriSoil starter) is mixed with the top layer of soil. As the air flows upwards through the soil it carries the contaminants to the surface. In this bio-active zone the pollution is completely and very effectively broken down and converted into CO2 and water.