findings of Martell and others that hot particles may very well Le a causative factor in a number of other disorders. Appendices II and III. See The DEIS deals only with inhalation risk, yet Americium is known to present a risk for the liver, spleen and bone of man through take-up from the gastrointestinal tract. (Martell, Personal Communication.) Concerning the adequacy of the radiological survey with respect to internal alpha emitters, Dr. Martell had this to say: It is noted that the survey results for the Enewetak Lagoon sediments show an average of 463 2394240 241 90 mCi Pu/km*, 172 mCi Am/km2 and 586 mCi Table 3-11, p 2-75, DEIS Volume I). the Sxr/km In addition, “£41 Am cuncentrations range up to 8.2 pCi/g averaged over the top 15 cm depth of soils, with 241 Am/ 239 Pu ratios varying widely and ranging up to 3.5 (NVO-140 Vol. 1, p 507). 241 Pu, the 241 Due to further radioactive decay of Am activity concentrations can be expected to double over the next 50 years. £ In addition, densely . vegetated soils on each island show the highest radio- activity concentrations. ‘The DEIS limits consideration of inhalation risks. 239+240 Pu to However significant uptake of Pu from the gastrointestinal tract has been observed in young mammals and similar uptake may occur in young children. In addition the uptake of americium in soils by vegetation is substantially higher than plutonium 2