1. Lysimeter Study Approach
Simulate landfill disposal of CCA
6 PVC Columns
22 feet high, 1-Foot diameter
Natural Precipitation or DI water infiltrates through a cap and creates leachate

2. Disposal Scenarios CCA Monofill
Construction and Demolition (C&D) Landfill
Municipal Solid Waste (MSW) Landfill

4. Lysimeters Lysimeter 1 – Untreated wood
Lysimeter 2 – CCA: 50% old, 50% new
Lysimeter 3 – Typical C&D mix
Lysimeter 4 – C&D w/CCA
Lyimeter 5 – MSW w/untreated wood
Lysimeter 6 – MSW w/CCA

9. Monitoring
Lysimeters began operation on August 28 (Wood, C&D) and September 27, 2001 (MSW)
Weekly temperature taken inside the lysimeters at 3 different depths (5, 10, 19 feet from the top of waste)
Record volume and characterize gas produced
Test gas with Landtec Gem 500 (methane, CO2)

10. Leachate Collection
Collect leachate twice monthly and analyze for general water quality parameters and As, Cu, and Cr

12. Preliminary Results
Weekly Temp monitoring fluctuates with ambient temps
Weekly gas monitoring – methane detected up to 60% in MSW lysimeters
Leachate generated from all lysimeters
Metals found in Lysimeters w/CCA
Lys /28/2001
Lys 4 - 6/25/2002
Lys 6 - 7/17/2002

13. Lysimeter 2 – 100% CCA

14. Lysimeter 4 – C&D w/ 10% CCA

15. Lysimeter 6 – MSW w/ 2% CCA

16. Lysimeter Leachate pH
MSW
C&D
UT Wood
CCA

17. Arsenic

18. Chromium

19. Copper

20. Operation Lysimeters will continue operation through spring and summer
DI water added as needed
Temp and Gas readings taken weekly
Leachate collection twice monthly and continued analysis for general water quality parameters and As, Cu, Cr