Three samples, each consisting of two cores, were taken at each 

 site (total area sampled 1.15 X 10"^ square meters by 10 centimeters 

 deep). Samples were placed in prelabeled plastic bags, stored at 1° to 

 4° Celsius, and returned to the laboratory for extraction. 



A magnesium chloride (MgCl2) and seawater rinsing technique was 

 used to extract the organisms from the core samples (Cox, 1976); rose 

 bengal was added to a 4-percent Formalin solution to aid in the sorting. 

 All organisms, 0.5 millimeter or larger, were separated by species, 

 identified, and counted. Some smaller groups (mostly microcrustacea) 

 were also counted, but were not identified below the order level. 



Core samples for grain-size analysis were taken at each site, rather 

 than at every other site, to increase the chance of detecting a 

 correlation between organism density and grain-size distribution. 



The ocean beach was not sampled during unfavorable sea conditions, 

 and usually no more than two transects were sampled per day. Thus, 

 sampling during the late fall and early spring lasted as much as 1 

 month. The first sampling series was taken in August 1975 (App. C) , 

 the second series on 23 October (transects I and II) and 20 November 

 1975 (transect III), the third series on 7 March (transect I) and 

 8 April 1976 (transects II and III), the fourth series on 8 June 

 (transect II) and 10 June 1976 (transects I and III), and the fifth 

 series on 16 July (transect I) and 22 July 1976 (transects II and III). 



After the October-November sampling was completed, a change in the 

 sampling procedure was requested by CERC. The number of samples per 

 site was increased from three to four to increase the accuracy of the 

 variance estimates of the common species populations and to increase 

 the chance of collecting rare species. Sampling at sites 4 and 6 was 

 eliminated to keep the total number of samples collected at a manageable 

 level . 



In the final plan on the south beach transects, the zero point was 

 the sound margin. Sampling sites I to 8 were respectively placed 15.2, 

 38.0, 51.8, 61.0, 68.6, 76.2, 152.4, and 304.8 meters soundward of the 

 zero point. The coring and extraction techniques used were identical to 

 the methods used on the ocean material (Cox, 1976), but tapwater was 

 substituted for the MgCl2-seawater solution. Core samples were also 

 taken at each site for grain-size analyses. 



The first sampling series for the sound beach was taken in July 1975 

 (App. D) , the second series on 11 October 1976, the third series on 

 7 March 1976, the fourth series on 24 May 1976, and the fifth series on 

 16 July (transect VI) and 31 July 1976 (transects IV and V) . 



4 . Measurement of Physical Parameters . 



Sites were located by stretching a precalibrated nylon line, which 

 was anchored to the shore, over the transect. The vertical distance 



