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In Appendix A there is a draft report by EG G on the calibra-
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tion and measurement methodology for in situ determination of 241 am at
Enewetak Atoll.
This draft report will be expanded to include 137¢,
and 60¢5, although the methodologies are very similar.
With the exceptions of Bokinwotme (Edna), Taiwel (Percy), and
Lujor (Pearl), IMP measurements of 13’¢s, 69¢9, and 24lam were
reported by the Desert Research Institute (DRI) for the islands Bokolu
(Alice) through Billae (Wilma).
IMP measurements of Bokinwotme (Edna)
and Taiwel (Percy) are not currently planned and those on Lujor (Pearl)
are not complete.
In Tables 2 and 3,
rates are sumaerized in
Average surface soil concentrations,
in Table 4.
the average external exposure
R per h for 1376, and 0c,
in pCi/g,
respectively.
for 241 a are summarized
Two types of mean results are presentec in each table--those
computed with the actual measurement results
and those computed by substituting the appropriate MDA value for all
measurement results less than the MDA.
were less than the appropriate MDA,
computed.
Where no measurement results
the latter type of mean is not
MDA values used in the mean calculations were provided to DRI
by EG&G and are single valued over the entire atoll.
Results for
Bokaidrikdrik (Helen) appear as the Boken (Irene) sand spit entries,
because the sand Spit is all of Bokaidrikdrik (Helen) that remains.
Mean results for the quadrants of Enjebi (Janet) reflect the following
allocations of the baseline data:
north baseline to the northeast
quadrant, east baseline to the southeast quadrant, south baseline and
benchmark (point 0,0)
to the southwest quadrant,
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and west baseline to the