FIG. 5. Dense nonaqueous phase liquid saturations in 1993 for the base case simulation. The stratigraphic units in the legend denote Backfill, Hanford 1a (h1a), Hanford 1 (h1), Hanford 2 (h2), Lower Gravel (low_grvl), Lower Sand (low_sand), Cold Creek unit silt (pplz), Cold Creek unit carbonate (pplc), Upper Ringold (up_ring), Ringold E (ring_e), Ringold Lower Mud (low_rmud), Ringold A (ring_a), and Basalt.