= 45 average and maximum doses.
The Federal Radiation
Council suycesis the as of
lhe sitsiercry assumetion
that the majority of individuals do not vary from the
average by a factor greater than three.
Thus, we
recommend the use of 0.17 rem for yearly whole-body
exposure of average ponulation arouns.
(Tt is noted
that tnis juice is also in essential agreement with
current recommencutions of the NCRP and the ICRP.)
It is critical that this guide be applied with reason
and judement.
Especially, it is noted that the use
of the averadqe figure, as a substitute for evidence
concerning the dose to individuals, is permissible
only when there is a probability of appreciable homogeneity concerning the distribution of bhe dose within
the population included in the average.
Strict adherence
to tnese guidelines
implies that
the ambient air standard should be zero particles, 89
While a variety of suggestions could be proposed, we recommend
a slight deviation from these guidelines
and the acceptance
of the disproportionate risk implicit in the 0.2 particle
standard.
of
This is a workable solution since best estimates
lung burdens
can
be
ersctional
quantities
Thus,
we
recommend that the MPLPB for members of the public be Q.2
hot particles, and the average lung burden for members of the
public be 0.07 hot vnarticles,
a factor cf
3
less
than the
maximum.
.
4
79/
FRC Report No.
l, Op.
cit.,
p.
27.
80/
Had we based the standard on a 1/10,000 risk per
Particle (See Table V), the MPLPB would have been one
particle and this problem would not exist.
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