. dosimeter values. TAT Rm 1 Li” of i ‘ foo The effective enhancement used for normal conditions.’ is = 1.54 and for high activity conditions is 2.9. In the scenario adopted to carry out the calculations we assume that a person spends 5 h a day in high activity conditions and 19 h a day under normal conditions. Finally a breathing rate of 20 m> per day and the surface soil concentration (0-5 cm) for each island is used to complete the calculation for Pu and Am intake via inhalation. The Am concentrations in the surface soil were measured by high resolution ganma spectroscopy (Appendices A and B). The Pu concentrations were estimated by using the conversion ratio (239+240py/24lan) developed in the soil sampling program and listed in Table 6. Example calculations are provided in Appendix E. The dose code is run assuming a pulmonary deposition of 0.3. This we feel is conservative from a dose assessment point of view at this time because preliminary analysis of the particle size distribution for both normal and high activity conditions at Bikini Atoll indicate that the pulmonary deposition would be less than 0.3 (Table 5). The dose contribution from the inhalation pathway is a major source of exposure to the transuranic radionuclides but is a minor contribution to the total predicted doses over the next several decades. Drinking Water The drinking water pathway contributes a very small portion of the total dose received via all pathways. 71849 However, we have included an evaluation of this pathway to demonstrate its relative contribution and to complete the assessment of all] major pathways. 5011694 \ wey tik Lt