TABLE U. Annual entrainment estimates and 95% confidence intervals for anchovy eggs and larvae at MNPS. 



Eggs 



Larvae 



Entrainment 

 estimate (XIO ) 



95% CI 



366.0- 540.0 

 47.2- 250.4 



285.2- 462.1 



148.1- 277.0 



348.2- 700.2 

 388.3-1249.9 



0.0- 53.70 

 142.7- 533.0 



Revised larval estimates due to error in previous calculations (NUSCO 1987b). 



for larval entrainment because Unit 3 was shut- 

 down from July 25 to August 17, 1986 during the 

 period of peak larval abundance; the total entrain- 

 ment estimate was a function of both abundance 

 and volume of cooling water. 



Examination of anchovy egg and larval annual 

 abundances, using the a parameter from the 

 Gompertz function as an index, showed large 

 fluctuations for both developmental stages (Fig. 

 4). The Gompertz function fitted the cumulative 

 data well (all R values exceeded 0.94). During 

 three-unit operations, egg abundance was low 



30 



25 



20 



15 - 



10 - 



LARVAE 



1_ARVAE 

 AT EN 



76 



77 



78 



79 



81 82 



YEAR 



83 



84 



85 



Fig. 4. Anchovy egg and larval abundance estimates and 95"/'o confidence intervals based on the a parameter from 

 the Gompertz function for stations EN and NB. 



270 



