DOG (IROIJ), EASY (ODRIK), FOX (LOMILIK), AND GEORGE (AOMEN)
The northern complex of islands is shown in Figures 16 and 17.
Iroij
and Odrik are connected by a long man-made causeway, while Odrik is
in turn connected to Lomilik by a shorter causeway.
Lomilik and
Aomen are differentiated only by a narrowing of the land mass.
Only Lomilik contained any significant amount of radioactive debris
and displayed relatively high levels of external background.
The
maximum exposure rate measured on each of these islands was:
Troij
-
40 ,R/hr
Odrik
-
10 yR/hr
Lomilik - 500 yR/hr
Aomen
- 100 ,,R/hr
The debris from Iroij, Odrik, and Aomen was buried on land.
A large
amount of non-radioactive scrap was removed from the ocean reef on
Aomen and also buried on land.
All radioactive metallic debris on Lomilik (maximum 500 ,R/hr) was
removed and buried at sea.
Fragments of concrete from scientific
installations, all of which measured less than 100 uR/hr, were
buried on land.
One low lying, algae encrusted area on Lomilik showed background radiation
levels of 500 uR/hr.
A soil sample taken at this location contained
approximately 55% 192MRh and 45% 60Co as measured by gamma ray spectroscopy.
The projected exposure rate reduction for this location is given by
Figure 18.
Since the absence of !37Cs would indicate that this sample
is atypical, a plot is also shown assuming that 20% of the total
activity is due to !37Cs and that the 192MRh and 6°Co retain their
same relative concentrations.
This might be more applicable to other
locations on Lomilik.
Two concrete bunkers on Aomen had areas on the tops and sides which
read 5-7 mR/hr (g ,y) at contact.
than 200 yR/hr.
The gamma exposure rate was less
Since the potential for exposure to individuals from
these sources was negligible, it was decided to leave the bunkers as
typhoon shelters.
.
28