Unsaturated zone: The part of the Earth below the land ... (Dublin, OH: National Water Well Association, 1987) 59–87. Tooth, A. F. and Fairchild, I. J. Soil and karst aquifer hydrological ...

a central atom bound to four atoms that are located at the apices of a pyramid composed of equilateral triangles unsaturated zone: the area above the water table that contains both water and air ...

The move comes after a controversial decision to approve a convenience store and gas station near the well field ... within the zone where any future contamination could reach the water wells.