“Appendix Table16
Predominant Radionuclides in Surface Soil Collected near the Trail from the Lagoon
to the Ocean on Rongelap Island, Rongelap Atoll, in February 1971 and April 1974
Radionuclide concentration in pCi/gq, dry?
Collection
Site and Date
6005
1254,
155,
13766
239.240,
241,
February 197]
Lagoon Beach
ns?
ns
Site #1 (Edge of village)
0.87+0.10
2.5 +0.
Site #2
1.7 +0.1
Site #3
ns
na
na
na
26
+0.3
na
na
na
2.7 +0.
34
=+0.3
na
na
na
0.26+0.07
1.2 +0.
23
+0.2
na
na
na
Site #4 (Center of island)
0.44+0.07
0.97+0.47.
14
+0.2
na
na
na
Site #5
1.3 40.1
2.4 +0.7
32
0.4
na
na
na
Site #6
0.47+0.08
1.2 +0.
18
840.3
na
na
na
Site #7 (Ocean side ridge)
0.42+0.06
1.2 +0.4
15
+0.2
na
na
na
ns
ns
ns
na
na
na
ns
ns
.
Ocean Beach
April 1974
Site #1 (Lagoon beach)
0.13+0.02
0.04+0.03
0.043140.035
na
Site #2 (Edge of village)
0.54+0.05
0.3340.12
25
+0.3
1.1 40.1
1.5
+0.2
5.4+0.8
Site #3 (200 yards inland
0.72+0.06
0.4340.23
40
+0.7
1.4 +0.1
2.1
+0.1
0.4+0.1
1.1 +0.1
0.78+0.11
24
+0.3
2.6 +0.1
3.4
+0.2
8.21.0
0.51+0.05
0.65 +0.11
from Site #2)
Site #4 (Center of isiand)
Site #5 (Seaward edge of
coconut grove)
Site #6 (Ocean beach)
0.1940.03
ns
ns
ns
10
=+0.2
0.0320.02
0.09+0.04
ns
1.3+0.2
na
a.
The error values for all radionuclides listed except 99Sr and Pu are two-sigma, propagated counting errors
for a single sample. The error value for 90Sr and Pu is the two-sigma counting error for 90 Sr and Pu is
the two-sigma counting error for a single sample plus an analytical error.
_
b.
ons = not significant; the net sample count is less than the two-sigma, propagated counting error.
not analyzed.
~~