The data derived from these samples can then be used not only to develop concentration ratios but to supply information on depth distribution of different radionuclides, supply data needed to estimate effects of soil removal on predicted radiological doses, supply information on surface soil (0-5 cm) concentrations for use in estimating exposure via the resuspension/ inhalation pathway and supply information on the depth of the humic containing soil. The soil radionuclide concentration data are also very important in _ helping to assess the environmental residence time of 1376, and 906. The soil profiles and local subsistence foods for developing the concentration ratios will be sampled from the same islands where available. Other islands at the 4 atolls which may require additional soil sampling to develop data for the dose assessment are: Bikini Atol) Bikini, Eneu, Nam, Enidrik, Eneman Rongelap - Rongelap, Naen, Kabell, Enjaetok, Mellu Utirik - Utirik, Am, Pigrat Enewetak - Aomon, Bijire, Aej, Lujor, Lojwa, Alembel Additional soil sampling would be necessary at those island not included under the curent program. Six persons at each atoll for 10 to 14 days would be required for sampling present and proposed residence and agriculture islands. This could be done concurrently with vegetation and marine sampling (see page 28 under B-1). After the first 4 years the annual cost for soil sampling would probably be reduced for these atolls although it is possible that other islands might later’ be identified for agriculture and/or residence and would require similar attention. Therefore, an estimate for a continuous level of effort will be 31