Option IIT -a. b. Return to the southern islands (ALVIN-KEITH). Subsistence agriculture limited to the southern islands plus JANET-WILMA except that pandanus and breadfruit are limited to the southern islands. c. No restrictions on travel. d. No restrictions on fishing. e. Remove Pu contamination on YVONNE, IRENE and the SALLY burial sites: £. Remove radioactive scrap. This is one of the less expensive options in that it requires removal of only the most seriously contaminated materials. In practical terms, it maximizes unrestricted use of areas of the Atoll having low radioactivity levels, leaves no hazardous legacies for the indefinite future, and permits living patterns which, with high confidence, are expected to result in population doses well below the recommended radiation criteria. This option does not specify action against radioactivity in soil of the islands such as ALICE, BELLE, and CLARA, nor does it recommend that residences be butit on JANET. By implication, therefore, resettlement of JANET would have to wait for radioactive decay and weathering processes to reduce contamination levels to acceptable values on these islands. Since the predominant isotopes, 13765 and 05, each have half-lives of 30 years, the waiting period could _be slightly more than one human generation for each factor of two reduction in dose. On the other hand the reduction could proceed at a somewhat faster rate. On JANET, reducing the maximum annual child's bone marrow dose from 0.72 rem/yr (Table 4, Case D-I) to the guide level of 0.25 rem/yr through natural decay of the 905, would theoretically require a wait of about 50 years considering only radiological decay. It is not expected that'such a reduction will actually take that long. -21-