Table 1.
Distribution of soil sample
special interest.
locations on Bikini and Eneu
Islands.
placed in plastic bags with identifi-
No. of sample
locations
Surface
(0-15 cm)
Profiles
(0-90 cm)
Bikini
The samples were
cation tags and prepared for shipment
to LLL where they were processed and
analyzed by gamma spectroscopy.
ples were analyzed for 239,240), and
905, by wet chemistry methods at
McClellan Laboratory,
North of second
baseline N
25
2
Central section
200
4
South of second
baseline S
25
2
North of airstrip
60
2
South of airstrip
40
2
Sam-—
<A complete
report on the analytical procedures
has been published.»
BIKINI GROUND WATER PROGRAM
Eneu
Total
350
127
A limited
number of profile samples were
designed to establish a network of
well locations on Bikini and Eneu
the hydrology and geochemistry of
elements in the’ ground water system.
several samples were collected
The north
and south sections of Bikini Island
and all of Eneu have lower contamination levels; hence, the
sampling density was lower.
quality and to study systematically
radionuclides and major and trace
planned in this area because
during previous surveys.
The ground water program was
Islands to assess the ground water
46 samples each.
to live in this section,
Purpose
Special
emphasis, however, was given to
the lagoon side of both islands since
Water movement and residence times
were to be assessed to deduce the
transport rates and mechanisms of
radionuclides deposited in the soil
zone or taken up by vegetation,
Methods and Measurements
Pits were dug with a backhoe to the.
homes may also be erected in these
hard coral layer:
areas.
reservoir. surface was approximately
The exact soil-sampling locations
the ground water
2m below the ground surface.
Seven
were determined by a random selection
holes were drilled with a ground power
process to obtain statistically mean-
auger at selected locations along the
ingful and unbiased results.
centerlines of Bikini and Eneu Islands.
Special
samples were also collected within
The auger penetrated the ground water
"hot spot" areas and other areas of
lens to a depth of approximately 1 to.
05s