calculations and we can also compare that number with the number that came
from the rainfall method.
And the next viewgraph (LRA-47) shows the steps in this measurement
strategy of what we now call Phase II.
We select the desired communities.
Those were selected on the basis of geographical coverage where we had a
feeling that the fallout might have gone.
Areas were selected essentially
to provide a circle around the areas that we have been measuring so that we
did select about 100 communities where we felt it was desirable to look for
a soil sampling site.
10 date sites.
11
assisted
Frosty's group then went out, selected these
They were followed by the Livermore people,
in this operation,
candi-
and EG&G also
to measure cesium-137 by field spectrometry.
12 That's mainly a confirmatory technique to make sure that that sample does
13 have a representative amount of cesium in there because
if it has been
14 seriously disturbed then we essentially get very little values of cesium,
15
and we would not take soil samples at that site.
On the basis of that, we
16 then select sites for soil collection, collect the soil samples, we select
17
sites for following analysis by laboratory methods.
18 Step 6.
We have just finished
Last May we essentially had just done this part (Step 1), and so
19 we've been very busy since the May meeting doing all of this measurement by
20 field spectrometry and collection of soil
samples.
We now have picked
21
these sites (for Step 6), and I'll get to them in a moment, which ones they
22
are, and then we'll follow that with our cesium measurements.
23
samples we'll
24
back then and calibrate our field spectrometry measurements,
25
know the distribution with depth to get a semi-independent measurement of
26
the
27
(Step 7), if the distribution with depth continues to look reasonable and
28
provides us with confidence that that site has not been further disturbed,
total
look at the distribution (of cesium) with depth.
cesium
deposition.
Now
192
on
the
basis
of
this
In the soil
We can go
and once we
measurement