DETERMINATION OF THE RATIO OF TOTAL TRANSURANICS TO AMERICIUM IN SOIL ON ISLAND RUBY DOE/ERSP TECH NOTE NO.2.16 DATED: May 1978 AUTHOR: B. Friesen, DRI Determination of one mean ratio for Ruby was made using laboratory results from soil samples taken at four locations including two composites and three depths. Reference Tech Note 2.2-A for assumptions made in computing the mean ratio and associated error. The range of values is from 4.42 to 12.35. The ratios are as listed below. The Ruby data has a mean ratio of 6.42 with a standard deviation of 0.88*; these values were used in computing total transuranics. Estimates and upper bounds were not computed because of insufficient data; indicated 2414m concentrations do not warrant collection of more data. Depth, em Location 0 1i-BL-0 3-BL-0 4-BL-0 5-BL-0 10 20 nmAt ‘Bt AN tir wan npn 5.56 4.97 6.10 4.44 9.48 6.57 7.63 7.30 12.35 9.03 7.84 8.63 4,80 5.42 5.58 4.82 4.95 6.52 8.39 5.54 5.40 4.42 6.05 5.36 TOTAL TRANSURANICS ON ISLET PEARL'S DAUGHTER DOE/ERSP TECH NOTE NO.2.17 DATED: May 1978 AUTHOR: B, Friesen, DRI Soil samples were taken from the surface only at three locations with four composites at each location. Minimum, maximum and mean total transuranices from the four composites are as listed. A ratio of total transuranics to americium was not computed for Pearl's Daughter since the islet is too small to do the in situ 24l14m gamma survey. TRU Loeation 0-BL-0 1-BL-0 2-BL-0 Minimum Maximum 72.5 69.1 105.6 165.24 125.6 164.6 Mean 117.12 107.9 142.1 *Due toa programming error, the standard deviation reported here is overestimated. B-2-20