season. The low numbers of larvae collected, and the low entrainment estimate for IP entrainment samples 

 in 1984-85 compared to the special lobster larvae samples in those years, supports the need to apply the 

 new sampling methodology for the assessment of lobster larvae entrainment losses under 3-unit operating 

 conditions, given the reductions in IP sampling effort in 1983 and 1985. 



Table 16. Summary of entrainment estimates for lobster larvae collected in ichthyoplankton 

 samples 1977-85 and in 1984-85 lobster larvae entrainment studies. 



' U-l = Millstone Station Unit 1; U-2 = Millstone Station Unit 2 



Total volume (ra ) of entrainment samples sorted for lobster larvae from May through July. 

 *= May through July. 



Impingement 



Annual impingement estimates for lobsters collected on Unit 1 and 2 traveling screens from 1975 to 

 1985 are presented in Table 17. In general, impingement of lobsters is highest during the summer months 

 and coincides with peak catch in traps (NUSCo 1982, 1983, 1984, 1985, 1986). The number of lobsters 

 impinged at Units 1 and 2 was highest in 1982, corresponding with the highest annual catch. Impingement 

 of lobsters and other species is also closely related to plant operations. When units are down for scheduled 

 refueling or maintenance, cooling water demands are considerably less than at full power. Thus the 

 disparity in impingement estimates between units and over years and the lack of correspondence with trap 

 catch values with the exception of 1982 is related to cooling water demands. 



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