Soil washing removes pollutants from soils just like how you wash your clothes. When you wash your clothes, you add detergent and when remediation experts wash soil they add leaching, spreading and binding agents which dissolve and concentrate any present chemicals and heavy metals. Washed soil is clean and can be left in place, no dryer required.
Soil washing is just one of the technique that can be used to clean up contaminated areas, including areas contaminated with PCBs.
