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

Table 1

Average, maximum, and standard deviation (stdev) values of Cu, Cr, and As concentrations in runoff from the suspended log and water quality guidelines [28].

	2002 Average, maximum, and stdev (of 14)	2004 Average, maximum, and stdev (of 33)	2005 Average, maximum, and stdsev (of 11)	Limit for drinking water	Limit for fresh water	Limit for marine water	Limit for livestock	Limit for irrigation
Cu; (mol/L)	3.85; 33.4; 8.56	12.8; 149; 26.9	3.26; 5.17; 1.00	15.7^1
Cr; (mol/L)	2.74; 31.5; 8.31	7.08; 77.7; 15.0	2.79; 5.48; 1.23	0.961
As; (mol/L)	1.53; 14.0; 3.63	5.70; 55.8; 12.4	1.13; 2.60; 0.625	0.133	0.067	0.167	0.334	1.33

Aesthetic objective, [28].