have experienced any non-fallout source of artificial radio- 

 nuclides. Furthermore, there is not a strong covariance 

 of 137Cs with Pu in these correlations (Bowen et al to be 

 published); New Haven, Conn., is a goou example of this, 

 consistently on the high end of Pu concentrations but not 

 comparably high in 137Cs. Without data of this sort it 

 might have been yery difficult to explain away the Mill- 

 stone Point mussel samples collected in 1977 from either 

 area 2 or the "Mussel -Watch" station. The comparisons 

 available, however, convince us that so far the only 

 clearly Millstone-contaminated biota samples we have ana- 

 lyzed were those from the effluent stream in the quarry. 



This point appears to us one that cries out for follow-up, 

 both by analysis of a larger number of the biota samples 

 that have been collected (see listing in our Progress 

 Report under the subject contract, submitted October 1977), 

 and by further sampling especially at periods of high re- 

 lease rate (as for instance in April, 1978 of Pu, or Jan.- 

 Feb. , 1978, of 137cs). 



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