1. Well 30 Modeling

2. Model Grid and Setup Well 30 Well 31 Well 27 Well UC-H2

3. Boundaries Constant Head General Head

4. Model Parameters 1 layer Unconfined Only pumping Wells –Well 30 –Well 31 –Well 27 Boundaries –Constant Head Top and Left Side of Model –General Head Bottom and Right Side of Model

5. Layer Properties Conductivity K x = 0.012 cm/sec K y = 0.012 cm/sec K z = 0.0012 cm/sec V x = 130 ft/yr Gradient of 0.003 Storage S s = 0.0002 (1/ft) S y = 0.2 Effective Porosity = 30% Total Porosity = 35 %

6. Initial Conditions Water Levels –1974 Groundwater contours from Kaiser Steel Corp Report, 1986. TDS Concentrations –2000 model results from Kaiser Steel Corp Report, 1986.

7. Well 30 TDS Concentration vs. Time (2500 & 4000 GPM

8. Pumping rate 2500 gpm

9. Well 30 Concentration Map (Pumping Rate 0 gpm, 3650 days)

10. Well 30 Beginning Head Levels

11. Well 30 Concentration Map (Pumping Rate 0 gpm, 3650 days)

12. Well 30 Head Level Map (Pumping Rate 0 gpm, 3650 days)

13. Well 30 Concentration Map (Pumping Rate 1000 gpm, 3650 days)

14. Well 30 Head Level (Pumping Rate 1000 gpm, 3650 days)

15. Well 30 Concentration Map (Pumping Rate 1500 gpm, 3650 days)

16. Well 30 Head Level (Pumping Rate 1500 gpm, 3650 days)

17. Well 30 Concentration Map (Pumping Rate 2000 gpm, 3650 days)

18. Well 30 Head Level Map (Pumping Rate 2000 gpm, 3650 days)

19. Well 30 Concentration Map (Pumping Rate 2500 gpm, 3650 days)

20. Well 30 Head Level Map (Pumping Rate 2500 gpm, 3650 days)

21. Well 30 Concentration Map (Pumping Rate 3000 gpm, 3650 days)

22. Well 30 Head Level (Pumping Rate 3000 gpm, 3650 days)

23. Well 30 Concentration Level Map (Pumping Rate 4000 gpm, 3650 days)

24. Well 30 Head Level (Pumping Rate 4000 gpm, 3650 days)

25. Well 30 Concentration Level Map (Pumping Rate 5000 gpm, 3650 days)

26. Well 30 Head Level Map (Pumping Rate 5000 gpm, 3650 days)