soil of minimum organic content could have concentrated more
The TLD results at the other
*S7aqs in its immediate vicinity.
locations along this transect are in excellent agreement with
the other data.
Total and Individual Isotope Exposure Rates Along the Village
Road Transect - Twenty-one hundred feet of the Village Road
between 0 and 1 Transects (see Figure 3) were surveyed.
Scintillation and Geiger counter readings were made every 150
ft. as determined with a marked 150 ft. length of rope.
These
measurement points coincided with the placement of NRDL TLD
dosimeter packages.
Spectrometer and ionization chamber
measurements were made at the beginning of the transect,
Location 4,
and at the midpoint,
Location 9.
The road was generally clear of brush, particularly
past the 1200 ft. point toward the Tent 2 area.
rather sandy and weathered,
relatively low and uniform,
to 1040 ft.,
The soil was
and the radiation levels were
from 20 to 40 ur/hr from O ft.
and from 8 to 18 wr/hr from 1350 ft. to 2100 ft.
Only the 1200 ft. point was located in the midst of somewhat
denser vegetation.
The exposure rate measurements at this
location were correspondingly higher; about 57 ur/hr.
The
spectrometer and ion chamber measurements are summarized
below.
SPECTROMETER AND
Location
(uxr/hr)
+87 as
B° a6
125 sh
Total
As
Q'
17.7
(80%)
1.7
(8%)
2.8
(13%)
22.2
24.6
#9 1050'
26.7
(77%)
3.9
(11%)
4.0
(12%)
34.6
37.5
.
2
ae
atte
VD
baer
pe,
~
#4
IONIZATION CHAMBER EXPOSURE RATES
The dominant emitter again is **’cs, contributing 77 to 80%
of the total exposure rate.
No soil samples were taken.
The TLD results
(Table 1)
also show the same pattern as the
portable meter readings, although the HASL results at
Locations 4 and 9 are quite high, possibly for the same
reasons as discussed in reference to the Location 2 result.
AP
me