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17
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was selected such that exposures of people are expected to be well within
the basic standard.
This guidance has been approved by EPA for use at
Enewetak.
The statement that, "There are no ICRP standards...for lifetime exposures
to internal alpha emitters," is in error.
All ICRP standards for internal
emitters are based upon the assumption of lifetime exposure.
Page 11, line 21 to Page 12, line 4 - "The recommendation that
plutonium contaminated soils, with levels not exceeding 40 pCi 239+240pu/g
of soil averaged over 15 cm depth, is suitable for human habitation, can
be very seriously questioned,
"The State of Colorado Board of Health has adopted interim standards
for Pu contamination limits in soils in land areas for residential use,
specifying that 238pu levels shall not exceed 2 dpm (0.91 pCi) per gram
of surface soil (i.e., averaged over the top 1 em depth of soil)."
caer:
Comments:
The information quoted from Dr. Martell's "personal
communication" relative to an interim standard for plutonium in soil
adopted by the State of Colorado Board of Health is grossly misleading.
The guidance referred to does not apply to cleanup or removal of soil
containing plutonium or to restrictionson use of plutonium contaminated lam
as Dr. Martell's communication implies.
After conduct of an appropriate
hearing, the Colorado Board accepted 2 dpm/g or 1 pCi/g of plutonium in soil
as requiring special techniques of construction upon such property.
These
special techniques are intended to minimize plutonium resuspension by
construction activities.
This guidance is irrelevant to development of
plutonium cleanup guidance for Enewetak Atoll.
PPO MACON FS RYHMEREM KPO ROE INE 0SNER MR ORT Fn OO TT