and cDTnposition observed in 1983, relative to previous years, occurred at 

 both potentially impacted and non iinp.-icted stations, suggesting that the 

 factors responsible for the changes were not limited to those stations 

 within the influence of plant operation. At IN, Unit 3 construction 

 activities apparently influenced local sedimentary characteristics, 

 although no concomitant change occurred in the infaunal communities. It is 

 probable that biological changes were not observed because sampling was 

 perfonned soon after construction began and before the local infaunal 

 community had responded to the changing physical conditions. There were, 

 however, no short or long-term changes in the sediments nor any shifts in 

 the abundance and composition of infaunal communities that could be 

 attributed to operation of Millstone Units 1 and 2. 



54 



