radionuclide concentration from the surface to each soil depth. This tabular listing of the data shows the decline in activity as a function of depth in the soil column. The ratio between radionuclides is not the same for all islands; this reflects the difference in device design, and consequently the mix of radionuclides in tests conducted around the atoll at or near the Various islands. More data for the radionuclide concentrations in the soil Profiles are given in Appendix C (Tables C-1 to C-104); included are the mean and median of all profile increments on each island as given in Tables 5 to 30, the maximum and minimum values, the standard deviation, the mean of the logarithms, and the standard deviation of the logarithms for each of the In Profile increments for all the profiles collected on each island. addition, the same types of data are listed for each of the six regions on Bikini and Eneu Islands that are used to calculate the distributed mean. The radionuclide concentration data for each individual soil profile on each island are given in Appendix D (Tables D-1 to D-56). The median, mean, and distributed-mean concentration with depth in the Soil column for all soil profiles for '37cs, 90sr, 239+240py, and 24]Am is Shown graphically in Figs. 11 to 16 for Bikini and Eneu Islands. The decline in activity with depth is generally exponential at Bikini Island, although the 90s7 activity declines less rapidly with depth than do the other three nuclides. The '37cs on Eneu Island also declines exponentially; however, the 90Sr, 239+240py, and 24am appear to be more constant to a depth of about 40 cm. The activity levels decline more rapidly between 40 and 60 cm, but are So Tow at 60 cm that a great deal of uncertainty is introduced, especially when only a few samples are available. The distribution of 905r, 239+240py, and 24]Am on Eneu Island indicates that the surface soil may have been mixed to a depth of about 40 cm at some point in its past history. the test Program. The island was the main residence island during Many tent camps, clubs, pads, storage sites, and other facilities were constructed on the island and could have produced conditions leading to such results. RADIONUCLIDES IN VEGETATION In Table 31 are listed the average concentrations of 137¢s, 90sr, 230+240py ang 241 Am in vegetation samples collected at Bikini Atoll. ae do 33