areas to be sampled in greater detail or will serve to define areas
If more data is
potentially (see Cleanup ranking below) to be cleaned.
deemed necessary in order to better define cleanup areas, the survey /
sampling process described above will be repeated.
G.
CLEANUP.
1.
veyors.
The border of areas to be cleaned will be marked by sur-
The entire enclosed area will then be devegetated in the manner
which causes the least disturbance to underlying soil.
will be removed for mulching.
Mowed vegetation
Easily removable contaminated and noncon-
taminated debris will also be taken away (see Part III B Criteria).
Large structures and concrete slabs which likely were in place prior to
the deposition of any plutonium and which do not interfere with Cleanup
will not be removed unless "swipes" show excessive removable plutonium
is present.
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2.
a
Boas trations near the air-ground interface (the majority of the Pu suspect a
a
.
For those Pu-contaminated areas. which have highest concen-
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areas), the soil will be removed in thin layers, one layer at a time, to fet
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The layers of soil and root mats will be
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covered and transported to the ultimate disposal site.
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For Pu-contaminated areas which have high Pu concentrations
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at great depths, soil will be removed in conveniently thick layers until
pene
approaching the required excavation limits, then they will be removed in
ory
thin layers as described above.
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