In general, the levels of chromium, copper and zinc from Giants 

 Neck, Fox Island and White Point were spatially uniform for each 

 sampling date. There was no indication of excess metal burdens in 

 oysters that grew near the cooling water outfall. Metal concentrations 

 in oysters from the quarry (both those held in cages and those sampled 

 from the natural population) were 1.5 or more times higher than levels 

 in oysters from other cages outside the quarry. Mussels collected 

 during 1983 at the Fox Island South station did not have mean 

 concentrations consistently greater than the other two sampling 

 stations. As was the case for oysters, then, there was no evident 

 relationship between metal levels in mussels and proximity to the 

 cooling water plume. 



The heavy metal study has now been conducted for 13 years and 

 results have been consistent. There have been no detectable increases 

 in metal concentrations in the receiving waters or in shellfish growing 

 outside the discharge quarry. Although levels of Cu and Zn have been 

 higher in the thermal plume, increases have not been evident in the 

 surrounding waters. Higher concentrations of heavy metals have occurred 

 in shellfish growing within the discharge quarry, but not in animals 

 growing adjacent to the plume. 



This study spanned the period of 1-unit and 2-unit operation 

 and results have been the same. Given the natural fluctuations in heavy 

 metal concentrations and the consistent results of our studies during 

 2-unit operation, it is unlikely that any detectable increases in the 

 receiving waters or in the tissue of local shellfish populations will 

 occur once Unit 3 becomes operational. 



OSPREY 



The American osprey ( Pandion haliaetus ) returned and successfully 

 produced six fledgling from the 2 active nests located on the power 

 plant site. The number of young produced at Millstone nesting sites 

 during 1983 was the highest total recorded since 1969 when observations 

 were first begun. Total number of young produced throughout the State 

 in 1983 was also slightly higher than any year since 1969. 



