8.
Plutonium contaminated soil on IRENE should be handled the same as
on YVONNE and using the same general criteria for removal except it
is not expected that pieces of plutonium metal will be found.
Since it is recommended that replanting of food crops be limited
to certain islands, test plantings of pandanus, breadfruit, coconut,
and arrowroot should be made, as soon as growth can be assured, on
each of the islands indicated for such crops by the Enewetak people.
As edible parts of these plants become available, their concentrations
of 9055, 13766, 239,240, and any other significant radionuclides
should be measured and compared with 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 made on islands other than those listed in 2b. and 2c. above.
An underground 1ens water sampling and analysis program snouid pe
conducted in which samples are taken over a period of at least 12
calendar months.
Bacterial content, salinity, and radionuclide content
should be measured, but primary emphasis of the program should be
placed on development of an understanding of processes which are
operating - or which can be made to operate - to reduce the ecological
half-life of 906, and
137
Cs below the radioactive half-life on the
northern islands, especially JANET.
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