1. Project 3 Hints

2. Landfill Site

3. Remedial Alternatives
Alternative A - Do Nothing
Alternative B - Impermeable Cap
Alternative C - Cap and Confining Wall
Alternative D - Cap, Slurry Wall and Drain
Alternatives E, F and G – Your Alternatives

4. Part A Create the “working directory”
C:\temp\Proj3a
Download the Vista1.gwv.zip file (from class webpage)
Un-Zip the file to get the file Vista1.gwv
Place the file in the working directory
Open the model Vista1
Run the model (steady state)

5. Part a

6. Part B Create a new “working directory”
C:\temp\Proj3b
Keep a separate working directory for each part, so you can back up if you make a mistake
Save (or copy) the file Vista1.gwv from
C:\temp\Proj3a to
Select
MODELS – PATHS TO MODELS
Set working directory to:

7. Part b - Transient Model Setup
In Part B: Convert the model to a transient model with 1 stress period

8. Stress period Types Select: Stress Period Types  Set all to transient
Set up the Stress periods
Stress period length = 972,000,000 seconds (= years)
20 time steps
Time step multiplier of 1.5

9. Specific Yield
Set specific yield = 0.28

10. Part b - Initial Heads
Select: Model  MODFLOW  Package Options  Initial Heads tab
Select: Initial Head Location:
Read Heads Directly from Binary Head Save File
Browse
Select: *.hds file from Part A
MAKE SURE THE Part A HDS FILE IS IN A DIFFERENT FOLDER FROM THE PART B FILES!

11. Part B – Impermeable Cap
Set recharge over cap area to 0

12. Recharge

14. Part C – Confining Wall
Use a “Wall” BC – set K ~0

15. Confining Wall
R30
R45
C15
C35
Landfill
Wall

16. Part d - Drains
Note

17. Part d - Drains
Wall
C15
C35
Drain
R30
Landfill
R45