C
@:
in land areas for residential usc, specifying thet
238
.
Pu levels shall not exceed 2 dpm (0.91 pCi)
gram of surfac2 soil
1 cm depth of soil).
(i.e.,
per
averaged over the top
It is noteworthy that the
mee VD
.
eRe Sh
AEC
hasmee
net eScanlished
that
,
-- 4.
5
+
2
Ff
this
standard
is
unéuly
.
ok
consérvative and it is not apparent that the AEC
tp et
|
Sr pom be cy
has requested the ICRP or NCRP to make specific
Ope few
recommendations with respect to standards for Pu in
;
soils applicable to chronic exposure to the general
pe glee
pubiic, including children.
rie
~
i
.
I note that the DEIS recommends no remedial
action for soils containing
Pu/g,
« 40 pci or
averaged over the top 15 cm depth.
« 88 avn
This is
much morethan44tines the Colorado interim standard
(2 dpm per g in the top 1 cm) because for most
Enewetak soils the top cm contains substantially
higher levels of Pu per gram than the 15 cm depth
average.
Thus,
for example,
at location 101 on
Pearl, the top 1 cm depth shows 400 pci
Pu/g,
whereas the average over 15 cm depth is about 60.
Thus the recommended standard for Enewetak is about
100 to several hundred times that adopted in Colorado.
There are recent research developments which
are expected to lead to reductions in acceptable
organ burdens of Pu in man by a factor of 100 to
1000 or more.
In my opinion it is likely that a 16
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ae Pb
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.
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wh
abt
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