amphipods & mysids) seasonality and impact potentiality is understood to 

 a lesser degree partially due to a lack of detailed taxonomic work. 

 More specific identification in the future would establish relative 

 entrainment impact effect on the infaunal and epibenthic adult habitats. 

 Additional entrainment survival studies were recommended for the amphipods 

 due to their importance as a source of adult food, since there is a 

 potential for high entrainment survival as has been found at other power 

 plants. 



An extensive offshore zooplankton program was developed to determine 

 distribution of zooplankton in relation to variations which occurred in 

 the entrainment program. This information is important in assessing the 

 impacts of Unit 1 and 2 and serves as baseline data for Unit 3 impact 

 assessment. 



Additional evaluations indicated that larger zooplankton such as 

 medusae and ctenophores may be more important in determining prevailing 

 fish larvae densities than power plant entrainment. The present sampling 

 program could explore this hypothesis with little additional effort. 



Literature indicates that smaller zooplankton (especially copepod 

 nauplii and rotifers) represent an important source of food which may 

 explain density variations in first-feeding winter flounder and anchovy 

 larvae. A comparability study between the presently used 0.333 mm net 

 samples and the proposed 0.044 mm net samples would be conducted prior 

 to recommendation of any new sampling design. 



The additional ichthyoplankton mortality caused by entrainment could 

 be a major factor in determining adult fish year class strength at 

 Millstone. The present ichthyoplankton program (begun in 1973) is 

 highly responsive to program objectives due to frequent evaluations and 

 modifications. 



