Leaching of Chromium, Copper, and Arsenic from CCA-Treated Utility Poles

Table 7

Average, standard deviation, and maximum values of all Cu, Cr, and As concentrations in soils at different distances from the poles compared with permissible soil concentrations.

Average, standard deviation, and maximum values of metal concentrations of all soil samples (mmol/kg)					Permitted soil concentrations [25, 28] (mmol/kg)
Distance from poles	0 cm	30 cm	60 cm	7 m	Agricultural, residential	Commercial, industrial
Cu	9.52; 8.34; 37.5	1.23; 2.52; 15.2^1	0.543; 0.595; 3.20^1	0.287; 0.102; 0.386	0.991	1.43
Cr	5.15; 10.8; 65.5^1	0.673; 0.879; 5.24^1	0.46; 0.340; 1.62^1	0.339; 0.237; 0.484	1.23	1.67
As	4.22; 6.57; 38.9^1	0.459; 1.00; 5.51^1	0.183; 0.337; 1.92	0.126; 0.173; 0.323	0.016	0.016

Pole P 101 along TL 259 where most of the highest concentrations were detected.