Ground Condition
The Plow X-1 plot is an area relatively clear of vegetation and debris and has not been
heavily vegetated since the cleanup project began. Plots X-2 and X-3 were in areas which
were windrowed in the fall of 1977 as part of the brush removal program prior to
surveying or IMP measurements. Now, only ground cover type vegetation (grasses and
morning glory vines) is present in those two areas. The Plow X-2 plot is near areas in
which extensive blasting has taken place and may have been subjected to some Shrapnel.
The Plow X-3 area contains some surface asphalt and concrete.
2.
Primary Site
a
Plot Plan
Consideration of the three sites led to the choice of Plow X-] as the actual experiment
area. The area contained eight IMP locations and was sectioned off in blocks as shownin
Figure B-9-7. Results of two surface contamination measurement techniques are also
given in this figure. The data values above each center point (grid location) were
determined by IMPing; those below the point are the average of four surface soil sample
com posites.
25m
109
91.6
Oo
oO
oO
oO
108
69.5
142
126
¢—_—\— Soil
67.4
58.1
69.9
64.8
hg@—_—_—_——IMP
oO
oO
25 mM
oO
113
62.2
79.2
75.2
13
14
15
16
@—_—_—_—_— Soil
rag
oO
awe
FIGURE B-9-7. Plow X-1 Plot Plan Showing Average TRU
Concentrations From IMP and Surface Soil,pCi/gz
my
1
48.8
Grid point designations are also shown at the edge of the plot, giving the 25 m survey
locations. The two regions which were later plowed are indicated by wavy lines in rows 14
and 16.
Radioactivity Profile Characterization
An extensive sampling program was employed to define the radioactivity profile in the
Plow X-1 plot. Figure B-9-8 shows the sampling array with the different sample types
coded on the plot. Again, the wavy lines indicate those blocks which were plowed.
ial -.
2
62.3
B-9-15