Table 1, Estimated’ Concentrations of 239-240, 2355), and 238), in Random Soil and Associated Vegetation Samples From A Site of Area }1, NTS Soil Isotope 239-240, | (pCi/g dry wt.) OT 235 U (ng 238), 235 U/g dry wt.) (ng 8 738u/g Bory ary Whe?at.) Mean + 5S.E. Vepetation Strata {n 1 12 5.92 + 2.16 1.3 0.955 2 14 1.46 +t 0.335 0.8 0.124 3 9 32.4 # 31.4 | 2.9 0.101 Total 35 11.0 + 8.07 4.4 L 14 30.0 + 1.7? 2 14 1,090 3 10 17,200 1 14 2 Tg + c + 13.9 Min. n 12 1.47 18 0-640 + 284 6} 0.101 284 2.41 52.3 25.8 Mean + S,E. + Min. Max Veg. Mean/ Soil Mean 0.569 1.3 0.0562 7.32 0.25 0.0989 0.7 0.234 1.87 0.44 1.04 + 0.377. 0.89 0.126 2.83 0.032 36 0.982 + 0.209 1.3 0.126 7.32 0,089 210 12 4.07 1.431 1.1 0.795 5,900 20 49.1 + 12.2 1.1 2.45 4.08 + c + 13.1 0.14 454 1.6 + 7,090 1.3 2/70 67,000 6 74.2 + 15.7 0.5 1,670 + 198 0.44 155 2,630 12 41.4 + 5,69 0.48 14 2,120 t 206 0.36 1,410 4,160 20 71.8 + 8.76 0.55 18.2 158 0.034 10 11,700 + 3,610 0.98 1,820 36,300 6 81.3. + 11.4 0.34 35.7 114 0.0069 ¥ = coefficient of variation = s/x +t preliminary estimates. Max. About 50% of results have been reported. 37.8 8.57 178 0.045 135 0.0043 71.3 0.025