d.
Recovery of plutonium soil concentrations greater than 400 pel /27>??
Pu at any depth these levels are found.
The justification is that
plutonium at some depth may one day be at the surface.
of
Also,
recovery/contaminated soil sufficient to reduce surface
levels to a value well below 40 pCi/g 239,2405
The'
justification is to keep air concentrations of resuspended plutoniun
to levels well within national and international
Standards.
After soil removal, all areas should be resurveyed to
ensure no pieces or hot spots of pliutonium remain.
e.
The area observed to have pieces of plutonium and the highest
soil concentrations is the interior and shoreline of the island
bepinning at a line drawn from the ocean reef te lascen 60 meters
marth
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Plutonium contaminated soil on IRDIO should be handled the sane as
on YVONNE
and using the same criteria for removal except at is not
expected that pieces of plutonium metal will be found.
Test plantings of pandanus, breadfruit, coconut, and arrewroot should
be made, as soon as growth can be assured, on each of the islands on
which these plants are to be grown.
As edible parts of these plants
become available, their concentration of 90g y
13765,
23952405, and
any other significant radionuclides should be measured and compared wit.
the Radiological Survey predictions.
These studies will provide for
a determination. to be made of the earliest time at which planting of
food and commercial crops can be nade.
An underground lens water sampling and analysis program should he
conducted in which samples are taken over @ period of at least 12
mo
ane,
wee’
10.