replicate panels can effectively collect fouling and wood-boring species. 

 The 95% confidence limits surrounding averaged abundance data indicate 

 that four replicate panels are sufficient to account for interpanel 

 variability. Natural variability in community composition and abundance 

 data from station to station, season to season and year to year has been 

 assessed over a three year period. 



Proposed studies are designed to refine our ability to assess power 

 plant impacts. Temperature tolerance, growth, and fecundity of shipworms 

 will be studied for native and non-native shipworm species to learn how 

 their life histories are affected by water temperature. Data on the 

 rates of destruction of common building materials by wood borers will 

 provide an important link between our monitoring studies and the actual 

 concerns of local residents. Finally, resumption of the exposure panel 

 program prior to three unit operation will provide an updated data base 

 and continuity between preoperational and operational phases of the 

 investigation. 



INFAUNAL SAND 1968 - 1982 



Since the infaunal sand program inception in 1968, many changes 

 have been implemented to eliminate any collection or analysis procedures, 

 which when evaluated, appeared to reduce data quality. The past procedure 

 of freezing samples (used until June 1976) most severely affected data 

 quality and precludes long-term quantitative comparisons of data collected 

 prior to June 1976. 



In 1978, an evaluation of the adequacy of 10 replicate cores (when 

 compared to a larger surface are not additional replicates) concluded 

 that at least 15 replicates were needed. Subsequently, direct comparisons 



