+ 13%) for the entire group and also individual islands (to lesser precision for surface samples to a depth of 5 or 15 cm (depending on which samples were analyzed). Additionally, for the group, a mean value could be determined for profiles to a depth of approximately 35 cm, The number of samples for each island in Phase I, Group I would allow for a determination of its surfac@ mean only, but would not be sufficient to differentiate any one island from another, On first inspection, this information seems to be somewhat insuf- ficient; however, these islands are essentially clean, and for an anticipated mean value for soil concentrations like 0.5 to 1.0 pCi/g a plus or minus twenty percent or so is really quite adequate for precleanup survey requirements, This is certainly sufficient information to make estimates on volumes of soil contaminated to unacceptable levels. The islands of Phase I, Group II were treated differently from Phase I, Group I islands. activity. These were sites of considerable construction They would also be the sites for primary habitation upon the return of the Eniwetok people. Although these islands were on the south- eastern side of the Atoll, and from all appearances very clean, it is prudent to take a very careful look at them, These islands were sampled sufficiently, somewhat excessively, in fact, to be able to stratify as a group, an individual island or within each islandallow as much as three to five stratification, if necessary. Relatively deep profiles (to 120 cm, 4 ft.) were taken in quantities sufficient to develop a mean value for each Phase I, Group II island. The depth was selected to allow for the deep disturbances expected from construction activities,