Table 4. Median surface soil concentrations (0 to 15 cm). Soil Concentration, pCi/g dry weight 0.92 0.86 0.067 0 0c 41 (35) 126 (5) 69 (18) 68 (70) 76 (128) 4.1 GD 34 43 48 48 43 2.9 Cs 239,2 9 4105, 2.3 9 aa a a) €51) (70) 1.8 (51) . 0.94 Island 0.59 137 0.98 Eneu Istand* 60. Co b Area 3 Bikini Area l (51) Area ? Area 4 Nuclide (6) (6) 4.5 €10) 3.7 (6) . . (3?) (33) 2-1 (34) . . (140) (BP) . 3.0 (176) (178) (254) , (663 (68) 0.25 ATS) (146) 0.22 (68) ty Arithmetic average of soil concentration in Areas 1-4 on Bikini Island. Number of samples taken. SOUL PROFILES of (88) 3.0 2.7 (31). (87) because of this inhomogenity, general- Soil profiles from different parts izations are not very meaningful, and Bikini these islands cannot be characterized and Eneu Islands show a wide range of activity distributions with by "average vertical profiles" with depth. which (A listing of the concentra- tions measured and for each profile is soil environments estimate dose. types of profiles 1? delineated at Enewetak Atoll are presented graphically in Appendix 3B.) 1 to The four basic piven in Appendix A and the data are As noted by Held, to formulate cleanup criteria “ different plant- all present on Bikini Island (see exhibit Fig. different 4). Although we could not vertical patterns of nuclide migra- identify any particular profile tion. for extensive areas on of The nearly complete disruption Bikini Island, specific locations can be assigned the upper soil layers at Bikini Atoll by clearing, "typical" profiles for predictive construction, and testing over the past 30 years as well purposes. as by agricultural practices initiated Island a group of samples more recently has created a variety close of plant-soil environments. ‘Thus, type the For example, on Bikini proximity to one taken in another (TOOS]L, TOLOL, TOLIL, 10121, and inhomogenity of the soil on these T0131) show penerally decreasing 3.Sslands is not Surprising. activity levels with depth despite However, -~ 1L4- So“338