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

Table 5

Results of pairwise comparison of TLs with Tukey’s procedure show the minimum differences in means (-values) necessary for TLs to be significantly different (with 95% confidence) with shaded areas showing dissimilar pairs.

TLs compared	[Cu] (mmol/kg)		[Cr] (mmol/kg)		[As] (mmol/kg)
	-values	Actual	-values	Actual	-values	Actual
227 & 225	8.98	6.67	10.0	2.02	6.14	2.92
227 & 259	11.5	8.32	15.5	18.2	9.52	9.61
225 & 259	12.4	15.0	16.8	20.2	10.3	12.5