ABSTRACT
Soil can be either an obstacle to contaminant movement or a contaminant transporter, whereas water is always a potential conveyor of contaminants. The stationary soil matrix slows the passage of groundwater and provides solid surfaces to which contaminants can sorb, delaying or stopping their movement. On the other hand, soil can also move-carried by wind, water ow, and construction equipment. Movement of soil, like movement of water, transports the contaminants it carries. Predicting and controlling pollutant behavior in the environment require understanding how soil, water, and contaminants interact, which is the subject of this chapter.
