c—_ 85 planning and Programming Individual in Population Critical (AEC Task Group Report) Organs Laren Whole Body 0.25 Bone 0.75 Bone Marrow 0.25 4 remsin 30 years Gonads 0.75 Thyroid These guides are Atomic Energy Commission Task Group Report recom- mendations applicable to the Enewetak Atoll Situation. They are derived from the Federal Radiation Council (FRC) Radiation Protection Guides (RPG) by using 50 percent of the FRC RPG for individual exposure and 80 percent of the FRC RPG guide for gonadal exposure, These reduced values are recommended as a necessary precaution to allow for uncertainty in prediction of annual exposures to individuals in the alternative programs. FIGURE 2-1. DOSE GUIDELINES FOR ENEWETAK ATOLL (REM/YR). The cleanup would remove as much radioactivity as possible from the islands, after which other remedial measures would be relied upon to reduce the predicted dose to lowerlevels, if necessary. If the cleanup did not result in a predicted dose less than the AEC guidelines for Enewetak Atoll, the return of the dri-Enewetak to the atoll would not be recommended. !03 In accordance with the recommendations of the AEC Task Group Report, options for cleanupof radiological hazards were limited to removal of contaminated scrap and removal of plutonium-contaminated soil. A third possibility, that of removing soil contaminated with fission products; i.e., cesium-137 and strontium-90, was determined to be counterproduc- tive at best and possibly irrevocably destructive. It required removal of such vast amountsofsoil that it would result in severe ecological damage and would notpositively assure the radiological safety of the people. !04 It was decided to leave the fission products to decay naturally. (The fission products have half-lives of about 30 years in contrast to the plutonium half-life of about 24,000 years.) Following the alternatives and recommendations of the Enewetak Radiological Survey, the Master Plan, and the AEC Task Group Report, the DEIS outlined several options for habitation as a means of minimizing predicted doses. These were basedonrestricting the use ofvariousislands; Le., using only the cleanest for residence; the next cleanestfor agriculture, efi we ee