[en] Ninety-two samples at varying depths were collected from 25 cores. Sample tubes were driven into the ground and segments of soil cores were retrieved at depths from the ground surface to subsurface consolidated material. forty samples of the 92 collected had detectable gamma activities [i.e., > 2 x 10^-₂ Bq/g (0.5 pCi/g)] of ₁₃₇Cs. However, only four samples, all from the same borehole, were found to have significant amounts of ₁₃₇Cs with a maximum of 1.7 x 10₃ Bq/g (4.6 x 10₄ pCi/g). These four samples also contained the highest activities of other radionuclides (₆₀Co, ₉₀Sr, ₂₃₅U, ₂₃₈U, ₂₃₉Pu, and ₂₄₁Am). These subsamples came from core number 4DD, which was the deepest core collected. Core 4DD was taken at the southwest corner of the site, which is at the lower elevation of the site. Since most of the activity in this core was found below the bedrock (or shale) in the groundwater region, the contamination is probably not from Building 3505. Additional investigation in the area around core location 4DD will be required to determine the extent of contamination