1. Groundwater Analysis From Florida C&D Landfills
(presumably containing CCA-treated wood)

2. Florida Groundwater C&D Facilities Sampling Method
Determine As conc in GW near C&D facilities:
21 C&D debris facilites
16 Florida counties
23 background wells
48 compliance/detection wells
Speciation analysis

3. C&D Background Wells (As > 5 mg/L in 8 of 23)
Total As (HPLC-ICP-MS)
Total As (Lab)
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09 2 8 13 27 31 37 41 47 53 57 63 69
Well #
Total As (mg/L)
Florida GW
background
2 mg/L
Avg. As
Conc.
7 mg/L

4. C&D Compliance/Detection Wells
(Detectable As - 32 of 48)
0.18
Total As (HPLC-ICP-MS)
Total As (Lab)
0.16
0.14
0.12
Florida GW
background
2 mg/L
Avg. As
Conc.
10 mg/L
0.10
Total As (mg/L)
0.08
0.06
0.04
0.02
0.00 1 5 11 15 19 22 25 30 35 40 45 49 55 59 64 68
Elevated Background
No Background Well
Low Background
Well #

5. As Speciation Compliance/Detection Wells
C&D Groundwater
As Speciation Compliance/Detection Wells
0.05
Florida GW
background
= mg/L
As(III)
0.04
DMAA
0.04
MMAA
0.03
As(V)
0.03
As Species Conc. (mg/L)
0.02
0.02
0.01
0.01
0.00 1 4 7 11 14 17 19 21 23 29 35 39 43 49 61 64
Well #
Elevated Background
No Background Well
Low Background

6. Arsenic in Groundwater
Conclusion
Arsenic in Groundwater
Avg.backgr./compli./detect. = mg/L
Florida background = 2 mg/L
Various species predominate species
Results currently suggestive of some As contamination but data set is not statistically robust
It takes time for As to migrate