Table 4. The median concentration in Bq g-! dry weight of 97Cs, Sr, 239+240Pu, and 241Am im soil at Rongelap Island. Soil depth, No.of an No.of No.of No.of 137Csa samples Sra 0-5 (Interior) 401 0.48 (0.45) 16 0.19 (0.12) 196 0.13 (0.11) 0-5 (village) 131 0.11 (0.19) 4 0.16 (0.11) 110 5-10 345 0.22 (0.29) 20 0.12 (0.18) 10-15 347 0.10 (0.16) 20 15-25 346 0.040 (0.082) 340 40-60 0-40 25-40 a samples ~ samples 239+240Py samples |241Am 366 096 (0.099) 0.019 (0.031) 90 015 (0.024) 16 0.037 (0.092) 255 .034 (0.069) 0.11 (0.15) 18 0.018 (0.036) 169 018 (0.026) 20 0.081 (0.089) 18 0.0073 (0.0097) 93 .0070 (0.026) 0.013 (0.028) 21 0.052 (0.061) 19 0.0033 (0.0047) 41 .0028 (0.0023) 302 0.0069 (0.024) 0 330 0.13 (0.10) 17. 0 ~—.0.11 (0.080) 13 —_ —-0.030 (0.024) 21 0014 (0.0049) 20 030 (0.028) Decay corrected to 1995. Number in parentheses is the standard deviation. The basic equation for calculating the amount of Pu or Am inhaled is: Pu or Am inhaled = Cs x (TEF) x M xI = Bq d-1, where Cs the concentration of Pu or Amin surface soil in Bq pg -! M the mass loading in ng m3 I the inhalation rate in the m3 d-! (TEF) the total enhancementfactor for Only one ground water sample waqcollected on Rongelap Island. The concegtrations of radionuclides in both cistern water]and ground water are listed in Tables 5 and 6. [he collected rainwater has very low concentratipns of 137Cs conditions are higher; the concentration of] transuranic either high or normal resuspension The daily inhalation of 239+240Pu and 241Am based on the scenario described above is and %Sr, while the ground water cgncentrations radionuclides is similar in the grougd water and cistern water. 0.10 mBq d-! (0.037Bq y—!) and 0.078 mBq d-! For the dose estimates, we usejan intake of 1 Ld-! of drinking water. We ass for the dose assessment that cistern water is Available for Radionuclides in Drinking Water 40% of the year. The peopie are Pery fond of soda (colas, orange soda, root beer, and others) and fruit drinks. These drinks frequently available and account for someof daily fluid intake. The total daily drinking[fluid intake from all these sources is between 2 2.5 Ld-i. Water consumption from foods (sougfs etc.) arenot included. (0.028 Bq y-!), respectively. _ The drinking water pathway contributes a small portion of radionuclides to the total estimated dose at Rongelap Island. The major source of water used in cooking and for drinkingis rainwater that is collected from the roofs of houses and other buildings and stored in cisterns. Two cistern and one ground water sample were collected and analyzed for 137Cs, %Sr, 239+240Pu, and 241Am as part of the NMIRS (Noshkinet al., 1981a). The source of radionuclides in the cistern water is generally vegetation that falls into the cisterns through openings in the top of the Radionuclides in Marine Fools The concentrations of 137Cs, and 241Am in marine foodsare list and 6. Most of the data result r, 239+240Py in Tables 5 from work