TERRESTRIAL AND MARINE PROGRAM
The purpose of this part of the radiological survey program is to
document and evaluate in the form of radiological dose assessments the
probable consequences of living on the 13 atolls and islands being studied.
The goals are to collect appropriate and sufficient representative samples
and to analyze and obtain quality data from which these assessments can be
accurately predicted.
TERRESTRIAL PROGRAM
To provide a meaningful dose assessment at the conclusion of the overall
Survey program, soil and vegetation sampling will be required.
These
samples will be analyzed for 905, one of the major contributors to the
:
137
.
:
.
.
potential dose,
Cs, and the transuranics (the transuranics primarily
238, 239-240
include
Pu
and 24d),
Soil sampling is required to determine
the depth distribution of gamma emitters to help quantify and verify the
aerial radiological survey data.
It has been found that 90 percent of the
total predicted doses to populations at Bikini and Enewetak Atolls are due
to 905, and 13765 ingested via the terrestrial foodchains.
To properly
assess this pathway, soil profile and surface soil samples and vegetation
samples must be collected to determine the potential radionuclide uptake in
subsistence crops.
The transuranics are determined to evaluate the long-
term potential effects from the gradual buildup of these isotopes.
The terrestrial program will include collection. of the following types of
samples:
1.
Surface soils.
2.
Soil profiles.
3.
Subsistence crops and associated soil profiles
fruit, breadfruit, papaya, squash, etc.).
available on many of the atolls.
(i.e. coconut, Pandanus
These crops may not be
However, wherever they are available,
it is of primary importance to sample the edible products and determine the
associated soil profiles.
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