Douglas Fir or Red Oak timbers lasted through two years of exposure. At EF and GN, CCA treated 

 timbers with untreated grain had up to 50% wood-loss after three years of exposure. 



25 



^ 20- 



15 



ID- 



S' 



C2 = 2.5 lbs/ft^ CCA) 

 C6 = 0.6 lbs/ft^ CCA) 

 OR = 20 Iba/ft^ Creosote) 



EF = Effluent Site 

 Fi = Fox Island Site 

 GN = Giants Neck Site 

 NB = Niantic Bay Site 

 WP = White Point Site 



CR C2 C6 

 K EFH 



CR C2 C6 

 h- Fi — 1 



CR C2 C6 

 f- GN H 



CR C2 C6 

 H NB H 



CR C2 C6 

 h- WP H 



Figure 14. Mean annual wood-loss caused by marine woodborers from 1983-1985 in chemically treated Southern 

 Yellow Pine timbers in the vicinity of the Millstone Nuclear Power Station. Estimates are based on visual 

 assessments of radiographs. 



35 



