FIG. 11. Late-time nonaqueous-phase liquid (NAPL) saturation as a function of maximum NAPL saturation previously reached. Late time is defined as 505 to 530 h after injection. Points in the pool zone within 2 cm below the interface are indicated by triangles; points below this zone are circles. Models fitted to the data were Land (1968) (solid line) and constant entrapment (dotted line).