ABSTRACT
Dense nonaqueous phase liquids (DNAPLs) are liquids, denser than water, that are only slightly soluble in water and therefore exist in the subsurface as a separate uid phase immiscible with both water and air.* The density of DNAPLs is greater than water (DNAPL density > 1 g/cm3 at 4°C), and their mobility in the subsurface is governed more by gravity and the properties of the DNAPL and surrounding soil than by groundwater movement.
