o
GR
*Yurndings of Martell and others tnat not particles may very well
" “pe a causative factor in a number of other disorders.
Prrendices II and III.
See
The DEIS deals cnly with inhalation risk,
yet Americium is known to present a risk for the liver, spleen
©
i pene of man through take-up from the gestreintestinal tract.
(Martell, Personal Communication.)
Concerning the adequacy of the radiological survey with
respect to internal alpha emitters, Dr. Martell had this to say:
ty
It is noted that the Survey results for the
Enewetak Lagoon sediments show an average of 463
mCi
239+240
Pu/km?, 172 mCi
241
am/km2 and 586 mCi
Table 3-11, p 3-75, DEIS Volume I).
the
241
50
Sr/km
5
In addition,
Am concentrations range up to 8.2 pCi/g averaged
,
241
239
over the top 15 cm depin of soils, with
Am/
Pu
Yatios varying widely and ranging up to 3.5
(NVO-140°
Vol. 1, p 507).
Due to further radicactive decay of
241
241.
Pu, the
Ain activity concentrations can be expected
to double over the next 50 years.
t
In addition, densely
,
.
vegetated soils on each island show the highest radioactivity concentrations.
The DEIS limits consideration of
239+240
Pu to
inhalation risks.
However significant uptake of Pu
een
,
from the gastrointestinal tract has been observed in
young mammals and Similar uptake may occur in young
children.
In addition the uptake of americium in soils
by vegetation is Substantially higher than plutonium
Ms
Sen hat
a!
h