f.
Plowing and/or mixing are not desirable or suitable techniques for
meeting cleantp criteria.
Both could be used after cleanup but must be |
carefully considered and justified.
3.
Recommencations:
The chairman recommends that the following program
outline be transmitted to Commander, JTG for execution generally in the
sequence listed, although some actions may be performed concurrently based
on availability of assets.
a.° In coordination with ERSP, establish, survey and mark, a 50 meter
grid for the northerm-half of Runit.
b.
Utilize FRST, other resources, and portable field instruments to
search out and remove very small "hot spots" and plutonium chunks.
This
effort should initially be confined to the FIG/QUINCE area, concentrating
on the areas shown as D level or higher concentration on the YVONNE June-
July 1977 aerial survey.
This effort is visualized as a locate-and-measure-~
and-shovel-and-bag operation.
of surface contamination.
It is not intended to excise extensive areas
Its purpose is to attempt to pick up milligram
and larger particles of plutonium concentrated in very small areas, generally
less than one meter square.
Removing such very high contamination level
spots should reduce the size of the areas which in-situ survey will characterize as greater than 400 pCi/g, thus reducing the volume of surface soil
to be excised.
This effort should be carefully monitored and if it appears
unproductive, should be stopped.
Location, amount excised, and estimated
activity for each excision should be recorded.
for crater containment.
Excised soil should be held