The radionuclide concentration data used to evaluate the drinking water pathway are listed in Tables 7, 8 and 9. The preferred and most often used water is cistern water; however, well water is used when dought conditions exist. In addition to drinking water the Marshallese drink considerable quantities of coffee and "Kool~Aid (Malalo}" for which they again primarily use the cisterm water. The total fluid intake involving the use of cistern water and well water was determined to be approximately one liter per day in the Ujelang Diet Survey (Appendix C). Terrestrial Foods Soil Radionuclide Concentrations. The soil sampling program was begun in February of 1979 at Enewetak Atoll. This progrem was conducted by the Department of Energy (DOE) Nevada Operations Office (NVOO) with technical direction from Lawrence Livermore Laboratory (LLL). A 50 meter grid was established on each of the islands Bokoluo (Alice) through Billae (Wilma), i.e., east side of the atoll. the northwest through the northeast and Soil profile samples were collected at each 50 m grid point. All sOll profile samples were collected over the following increments: cm. 0-5 cm, 5-10 em, 10-15 cm, 15-25 cm, 25-40 cm, and 40-60 We have found that 40 cm depth encompasses most of the active root zone of the subsistence crops which we have observed in the northern Marshall Islands. A trench was dug at each 50 m grid point with a backhoe and samples were collected down the sidewall of the trench. ~ 16 - MM 1b4s EAD nome 2. Mm ont Ler Gu t