38 
on deck, it is inverted, the vial is removed, and the vial 
contents are introduced into a sterile dilution bottle. The 
procedure from this point on is the same as with the diver 
samples. 
Results 
Using these techniques, 100 samples were collected in the 
vicinity of the Orange County outfall on a series of parallel 
lines from about 13 miles down coast to 3 miles upcoast from 
the outfall. On each line, one sample was taken at the water 
line, one in the surf, and the remainder spaced out to three 
miles offshore. Most of the samples to a depth of 60 feet 
were taken by the divers, the deeper ones being collected from 
the VELERO IV. On several stations samples were collected by 
both techniques and these showed similar coliform counts. 
Using the same procedures, 110 samples were taken in Santa 
Monica Bay in a Similar pattern. After the bacteriological 
aspects of the bay project were completed, a similar series of 
samples were taken in the vicinity of Whites Point using funds 
provided by the Los Angeles County Sanitation Districts for 
the trip. The data from this trip is included in this report 
with their permission. 
a Table IV summarizes certain aspects of the data obtained 
and Figures 10, 11, and 12 map the extent and intensity of the 
bottom coliform fields found in the three areas. It can be seen 
that the coliform fieids around the Orange County and Whites 
Poing outfalls, where unchlorinated effluent is constantly dis- 
charged, occupy an extensive area and contain large numbers of 
