a
HGH
FIDE
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TInt, I9?e-
URSULA - LOUWA
NN
po
_
Ne
1OGm
FIGURE 7-44. ISOPLETHS OF FINAL ESTIMATED SURFACE TRU ACTIVITY IN pCi/g FOR ISLAND URSULA
7.4.13
Vera
Background
Island Vera (Marshallese: Alembel) is a moderately-sized island in the east-northeastern part of the
Atoll, having an area of 15.5 hectares. The island was densely vegetated and had several mature
eoconut palms, Few pieces of debris remained from the test operations thus no significant soil
disturbances occurred due to debris removal.
No ground zero sites were located on Vera and it
ranks 22nd of all islands in the Atoll in total H + 1 hour exposure rate with 270 R/h. There were no
known or suspected burials of radioactive materials on this island.
1972 Survey
During the 1972 survey, soil samples were collected at 25 sites on Vera and a few vegetation
samples were also taken.
Three of the 25 locations were 0-35 em profile samples and the remaining
22 locations were 0-15 cm core samples, The results from the prof ile samples indicated a steady
decrease in activity with increasing depth for 137g, 90Sr ang 239,240py data. Tables 7-1, 7-2 and
7-3 give 0-15 em summary results for I3ieg, 40sr and 239,240 py respectively, for the data
collected in 1972.
255