Sampling teams were dispatched from Enewetak Island as required using an EIC team leader and Navy personnel assigned to the RADLAB. Daily transportation to the work islands was via Navy Boston Whaler or Landing Craft service. Samples were taken and referenced to the island grid system stakes placed by the 84th Army Engineer teams, or by H&N surveyors, for the in situ IMP measurements program. Soil Sample Pattern Design. A standardized soil sampling procedure was designed and documentedin the DOE/ERSP Procedure No. 4 (see Appendix A) by the EIC laboratory manager and the DRI statistician at the start of the project. The objective of the sampling procedure was to collect a sample which was reasonably representative of the surface being sampled and to provide a measure of the nonhomogeneity of the sample. The sampled spots were randomized through the use of a game-board-type spinner to set the initial sampling direction. The compass direction of the initial spinner angle was recorded on all sample can labels for inclusion later into the data base. Then the spinner heading was considered as 0° and samples were taken at the clockwise angles and distances indieated in Table 4-2. Six aliquots were taken for each composite sample. (See also Figures 4-5 and A~4-1). Only composites A and B were taken until 20 April 1978, after which the composites C and D were also taken at the discretion of the DOE Tech Advisor. Surface Soil. Surface soi] aliquots were taken at the distances detailed in Table 4-2 using a custom made "cookie-cutter" tool to excise 300 em® from a square 10 em on a side to a depth of 3 em. Samples were taken at 0 ecm, 10 em and 20 em depths to provide both surface and shallow depth distribution data. DOE/ERSP Procedure No. 4 provides details on specifie steps used during sampling. All field surface samples were collected in one-gallon paint cans and sample data were written on an adhesive aluminum (3 x 6-inch) label with a ballpoint pen used as a stylus to emboss the label. The environmental conditions preciuded use of paper labels or conventional writing pens. TABLE 4-2, SOIL SAMPLING PATTERN Composite Cloekwise Angle from Spinner Heading * A 0 15 1.8 (Degrees) 30 45 60 795 90 105 120 135 150 165 180 195 210 225 240 295 270 285 300 315 330 345 B Cc (Meters from a spinner) 5.3 8.8 1.8 3.3 8.8 1.8 5.3 8.8 1.8 Ded 8.8 D 8.8 1.8 2.3 8.8 1.8 5.3 8.8 1.8 5.3 8.8 1.8 5.3 *Actual spinner heading, a geographical compass direction recorded on each sampling can for each sampling point, was used as zero degrees for the sampling pattern. 117