71 



Black Rock Harbor 



E 



Q. 



o 



c 

 o 

 o 

 a 

 o 

 O 



>3000 n 



2500-3000 in 



N=37 



2000-2500 



mw/////A 



1500-2000 



1000-1500 



800-1000 



— 





I 



600-800 



ga 





i 



400-600 



Wtt 



<400 



yWW///)/////A 



20 40 60 80 



Percent of Samples 



100 



□ Zn 



Cu 



SCd(x100) 



CD 



l_ 



*^ 



c 



o 



c 

 o 

 O 



>3000 



2500-3000 



2000-2500 



1500-2000 



1000-1500 



800-1000 



600-800 



400-600 



<400 



New Haven Harbor 



N=20 (Zn,Cu) 

 N=5 (Cd) 



20 40 60 80 



Percent of Samples 



100 



□ Zn 



Cu 



!Cd(x100) 



Figure 3-18. Trace metal (Zn, Cu, Cd) concentration frequency distribution of samples 

 from Black Rock and New Haven Harbors 



Sediment Capping of Subaqueous Dredged Material Disposal Mounds 



