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