-~jl-

For example, if the Bikinians returned in 1979 to Eneu, if the
diet consists of both local and imported foods as shown in Attachment 1,

and if they spend no time on and consume no food from Bikini Isiand,
(Attachments 5-9, Curve 1) their predicted maximum annual whole body
and bone marrow doses and their 30-year whole body doses (average for
the population) would be within the federal guidance of 170 mrem/yr

and 5000 mrem/30 yr.

Under these same conditions, exposures of the

highest individuals would be within the 500 mrem/yr federal guidance
for whole body and bone marrow but would exceed the 250 mrem/yr Enewetak
criterion.

Without imported food

(Attachments 5-9,

Curve 3)

both

predicted average population and highest individual doses exceed the
1/70 and 500 mrem/yr federal guidance, while the 30-year estimate
of 4700 mrem/30 yr just meets

the 5000 mrem/30 yr federal guidance

but exceeds the 4000 mrem/30 yr Enewetak criterion.
Furthermore,

it must be recognized

that

there is a Significant

degree of uncertainty in the dose estimates because of the need to
predict lifestyles of peoples.

For most situations it is estimated

that these values may be realistic to within a factor of two; under
unusual circumstances they may be within a factor of three.+/?

These,

then, would be the approximate error bands associated with the curves

in Attachments 5-9.
A summary comparison of these curves with the federal guidance
and with the Enewetak criteria is given in Attachment 10.

l7Robison, W.L.

and Phillips, W.A., “An Updated Radiological. Dose

Assessment of Eneu Island at Bikini Atoll, UCRL-52775,

draft.

OU

5009780

1979,

in

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