DETERMINATION OF THE RATIO OF TOTAL TRANSURANICS
TO AMERICIUM IN SOIL ON ISLAND RUBY
DOE/ERSP TECH NOTE NO.2.16
DATED: May 1978
AUTHOR: B. Friesen, DRI
Determination of one mean ratio for Ruby was made using laboratory results from soil samples
taken at four locations including two composites and three depths. Reference Tech Note 2.2-A for
assumptions made in computing the mean ratio and associated error. The range of values is from
4.42 to 12.35. The ratios are as listed below.
The Ruby data has a mean ratio of 6.42 with a standard deviation of 0.88*; these values were used in
computing total transuranics.
Estimates and upper bounds were not computed because of insufficient data; indicated 2414m
concentrations do not warrant collection of more data.
Depth, em
Location
0
1i-BL-0
3-BL-0
4-BL-0
5-BL-0
10
20
nmAt
‘Bt
AN
tir
wan
npn
5.56
4.97
6.10
4.44
9.48
6.57
7.63
7.30
12.35
9.03
7.84
8.63
4,80
5.42
5.58
4.82
4.95
6.52
8.39
5.54
5.40
4.42
6.05
5.36
TOTAL TRANSURANICS ON ISLET PEARL'S DAUGHTER
DOE/ERSP TECH NOTE NO.2.17
DATED: May 1978
AUTHOR: B, Friesen, DRI
Soil samples were taken from the surface only at three locations with four composites at each
location. Minimum, maximum and mean total transuranices from the four composites are as listed.
A ratio of total transuranics to americium was not computed for Pearl's Daughter since the islet is
too small to do the in situ 24l14m gamma survey.
TRU
Loeation
0-BL-0
1-BL-0
2-BL-0
Minimum
Maximum
72.5
69.1
105.6
165.24
125.6
164.6
Mean
117.12
107.9
142.1
*Due toa programming error, the standard deviation reported here is overestimated.
B-2-20