OGYS
a ghew
specific Comments:
1) To what extent, if any, is the assumed diet realistic or conservative?
After what period of time is {tianticipated that this diet will, in
fact, be available as the primary, if not sole, source of food?
For
example, are the people now to some extent dependent upon imported
food, and would this continue?
2)
How do LLL soil surface (0-3 cm)
recommendations (0-1 cm)?
measurements compare with EPA
(Perhaps info related to this could be
obtained from the Rockwell comparative soil sampling program at
Rocky Flats.)
How reliable and consistent fs the Pu:Am ratio of 2:1?
Is 4%
justifiable to assume a 2:1 ratio for both the surface soil (0-3 cia)
|
and the root zone (0-30 cm)?
How realistic are the occupancy| factors stated?
for women and children?
Are these valid also
for example, children might be expected to
eS
tan
4)
estimated dose be decreased because of avoidance of agricultural
islands, increased because they|might be expected to play in the dirt,
sand or coral, or would the dosé
adult?
5)
=
spend more time on a village or!picnic {sland, but would their
be essentially the same as for an
|
A gut transfer factor of 3.0 x jo-5 may not be conservative.
EPA
recommends 10-4 for Pu-239, 240 oxide, 1073 for oxides and non-oxides
of other isotopes of Pu, Am andiCm, and 5 x 10°3 for biologically
“a
q
incorporated material.
Use of
o73 for Am is okay, but Pu-239, to say
nothing of jPu-238, absorption factors may have been underestimated,
Perici
i
3)