The tvo ucthods presented are the "resuspension-factor" approach and the
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“latciuitm in toils
LA=3433-15, presents recommendations derived from estimates of exposure
through inhalation considering the concentration of *39Pu in the very top
surface soil.
The following values were recommended:
409 nCi/z - For all particle sizes provided no more than
290
oCi/- in< 109/am size fraction.
A revised Maximum Permissible Concentration, (PC, of 9.3 pCi/m? for
individuals was used in these determinations.
large area contamination.
The estimates apply to
Levels several times larger could be permitted
for localized deposition.
The Task Group recognizes that the islands of [newetak Atoll are small
and that the areas of highest 239Pu in soil on these islands are smaller
still.
On the other hand the people live close to the soil.
It is also
recognized that experts are not in agreement as to the critical organ for
inhaled plutoniun, whether to use an average dose for this organ, or the
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