options. The numerical guidance therein should be reduced by the factors of 50 percent for individual exposure and 20 percent for gonadal exposure considering that exposures cannot be precisely predicted. The detailed rationale for these reductions is provided in Appendix III. The resulting guides for planning cleanup actions wilt then be: whole body and bone marrow - 0.25 Rem/yr Thyroid - 0.75 Rem/yr Bone — | . 0.75 Rem/yr_ Gonads - 4 Rem in 30 yr o Since there is no adequate scientific information which would support general guidance for cleanup of plutonium contaminated soil, guidance can only be developed on a case-by-case basis using conservative assumptions and safety factors. With this in mind, the Tusk Group recommends the following for use in making decisions concerning 2395. cleanup operations at Enewetak: a. < 40 pCi/gn of soil ~ corrective action not required. b. 40 to 400 pCi/gm cf soil - corrective action determined on a case-by-case basis*® considering all radiological conditions. ce > 400 pCi/en of soil - corrective action requireds ASSESSISNT CF DOSES AND THE RESULTS OF ALTERNATIVE CORRECTIVE ACTIONS The Task Group aporoach for development of judgments and recommendations for the radiological cleanup and rehabitation of Enewetak was to consider a number of alternatives for exposure reduction that may be feasible. Basically, the procedure involved four steps: *See Appendix III for additional guidance. Le Qevecmeeqetes wee eee . = . ~ Sr a ee a ees ee enerUR Be em ne