The results of physical testing of sediments at New 

 London were in good agreement with the REMOTS grain-size analyses 

 and reflect both the natural heterogeneity in sediment types 

 characteristic of the site, as well as the addition of dredged 

 material consisting of sand and silty-sand with lesser amounts of 

 clay. Chemical analyses of the sediments indicate the occurrence 

 of several metals (Hg, Pb, As, Cd and Cu) and PCB's at Low 

 concentrations; this is consistent with the classification of 

 these contaminants in the dredged material prior to disposal. 

 There was no significant contamination observed in and around the 

 disposal mound in terms of Fe, % total carbon, and organochlorine 

 pesticides. Based on statistical tests, it does not appear that 

 contaminant resuspension and transport is occurring, although the 

 lack of strong contaminant signature in the recently deposited 

 material makes it difficult to assess such processes 

 unequivocally. 



Contaminant levels in tissues of the suspension-feeding 

 amphipod, Leptocheirus , at stations in and around the disposal 

 site were either below detection limits, significantly less than, 

 or not different from levels obtained at the reference station. 

 Statistical tests for association between sediment concentrations 

 and body burdens indicate a lack of strong correlation between the 

 two, but definitive conclusions cannot be made because of the 

 relatively small sample sizes. 



16 



