G
a
Hy
pCi lung burden of insoluble alpha emitting particles
will give rise to significant adverse healtn effects
for lifetime exposures.
The typical burden of
insoluble particles of respirable size
diameter)
(<« 5.0 Um
is about one gram in human adults.
For
this reason I would recommend that surface soils
should not exceed about 1 pCi of +" pu, and other
insoluble alpha emitting particles per gram of
insoluble particulates of respirable size in the
@irborne dust resuiting from the disturbance and
resuspension of surface soils.
On this basis even
the Colorado standard may give rise to excessive
organ burdens.
Drs. Cochran, Tamolin and Geesaman all raise the same or similar
objections to the DEIS plutonium standards.
.
‘Further explanation of the plutonium cleanup criteria developed
by the AEC Task Group is necessary.
to III-1l1.)
(DEIS, Vol.
II, Tab B, pp.
III-8
We have already mentioned the questionable wisdomof
the 40 pCi/g standard.
For any concentrations exceeding 400 pCi/g
the Task Group recommendations require removal-of the soil.
But
in the range between 40 and 400 pCi/g, the DEIS standards call for
“corrective action ..... on a case-by-case basis."
p. III-9.)
(Vol. II, Tab B,
Certain criteria are offered for guidance in the
exercise of this judgment, but they appear to be entirely too
unspecific and subjective.
Once a decision is made to take correc-
tive action,
\>