on the sediment since depths at the proposed disposal site are greater than 

 60 meters. The net result of these data is a strong indication that the 

 Portland disposal area should contain dredge spoils with little danger of 

 dispersion. 



Sediments 



Sediments taken from the propsed disposal site were generally fine sands, 

 therefore, heavy metal analysis was generally not attempted on these samples. 

 One sample from the site was analyzed and Is presented with data from Portland 

 Harbor in Table B-2. There are no reference samples due to the fact that all 

 areas except the proposed site are composed of rock and gravel . Iron to other 

 metal ratios are presented for the Portland samples. There appears to be no 

 enrichment in metal levels compared to Iron in the harbor. The harbor samples 

 are however, more concentrated in a^l me^al? (Including Fe) compared to the 

 proposed dump site. 



Biochemical Studies 



Mussels from Bulwark Shoals were used as reference samples and placed at 

 the proposed Portland disposal site on May 14, 1978 at 43° 33' 55.5"N, 70° 01' 58.3"W. 

 Data from analyses of th^se samples are presented in Table B-3 and shown graphi- 

 cally In Fig. B-6 . The only metals exhibiting any significant differences from 

 the original sample are Feand Cd from the reference site. A lack of difference 

 between the baseline statipn and the proposed disposal area is significant since 

 it indicates that changes occurring after disposal may be attributed to dredge 

 spoil interactions with more confidence. 



