Cr and Cu which show a significant increase in their concentrations during April 

 1978, there is no discernable change in the concentrations of Cd, Hg, and Zn . 

 However, significant decreases are observed in the concentrations of Pb (dis- 

 posal area) and Cr (disposal and reference area) for the April anH August samples 



Benthic Macrofauna 



Tables G-4 and G-5 present numeric density data for the Cornfield Shoals 

 disposal site and reference station. Obviously the lack of individuals at the 

 disposal site prohibits use of these data for more than a cursory look at the 

 population. It may be that patchiness in the benthic population has biased 

 these results. 



Fi sheries 



Since no lobster buoys or commercial or sport fishing activity have been 

 seen at this site during DA M 0S investigations it was given low priority for 

 fisheries mapping. Mapping will be completed during the next month along with 

 the New London si te . 



Pratt (1977) found beds of blue mussels on the stable bottoms of the dump 

 site and central depressions. Many other invertebrates took advantage of the 

 food and shelter which these beds offer. Lobsters and finfish would find abun- 

 dant food here and it is possible that fisheries are carried out during some 

 part of the year. 



