and sizes of barnacles, snails, and Fucus and Ascophyllum plants (5 

 each/ quad.) . 



In February 1969, the Black Point station was dropped and a new 

 station, at Giants Neck, was added. By May 1969, attempts were being 

 made to get more quantitative data: 30 barnacles per quadrat were measured, 

 and several methods for determining algal growth were tried. By September 

 1969, no method had proved satisfactory, and that facet of the program 

 was dropped. 



Pre-operational studies continued until Unit 1 went on-line in 

 December 1970; the only described changes involved relocation of some of 

 the quadrats, and the adoption of a subjective rank scale to rate the 

 relative abundance of selected invertebrates. No reported changes in 

 methodology occurred until February 1973, when two additional stations 

 were added (Seaside-East and Seaside-West) . 



In June 1973, quantitative intertidal studies were undertaken at 

 White Point, Fox Island-South, and Giants Neck; at each site, five 

 quadrats (each 25 cm on a side) were scraped for subsequent biomass 

 determination. In that form, the sampling program was continued through 

 December 1978 (Unit 2 became operational in this period, Dec. 1975). 



In August 1978, the rocky intertidal sampling program was evaluated, 

 and extensive modifications were proposed (Appendix I). The modified 

 sampling procedures were instituted in February 1979, emphasizing non- 

 destructive sampling, recolonization studies, Fucus and Ascophyllum 

 growth measurements, and more frequent collections. 



In the new program, seven rocky intertidal stations (Fig. 2) were 

 sampled monthly. At each station, five permanent transects were estab- 

 lished perpendicular to the water-line, one-half meter wide and extending 

 from Mean High Water to Mean Low Water levels. Each month, the entire 



