Hence, the calculation for 241 Am content and total TRU follow: Bulk soil = (1.2 x 106 em3)(1.5 g/em3)(2300 pCi/g) = 4.2 mCi "Hot" bags =(1000 g/bagX3 bags)(2.3 x 105 pCi/g) = 0.7 mCi Jars = 92uCi 0.1 mCi Concrete chunk = 260uCi 0.3 mCi 241 Am Sum 5.3 mCi 239,240 py (10 x 24l am) 53 mCi Total TRU 60 mCi Recommendations Since the total contained radioactivity in the bunker is small relative to the TRU already deposited in the Cactus Crater and is a small volume (approximately 2 cubic yards total), it is reeommended that the radioactive debris stored in the bunker be removed and disposed of in the Cactus Crater dome. This includes all of the remaining bags, loose sand and soil, and the metal cans, jars and wooden box. These items should all be treated as being alpha contaminated and disposed of in the most expeditious manner. TABLE B-14-1. RESULTS OF FIELD GROSS GAMMA ANALYSIS OF SELECTED SAMPLES IN YVONNE STORAGE BUNKER 241 am Sample No. pCi/g or ECi* Comments 1 1300 Composite of loose soil at rear of bunker 3 4 340 2200 Composite of torn bags Composite of loose soil near center of pile 6 7 Jar 1 Jar 2 Concrete 1100 580 2 3 420 Composite of torn bags 5200 Soil from torn bag #181 14 78 260 Soil from torn bag near entrance Sand/soil from floor near entrance Weathered metal part Flaked gray metal with soil Concrete chunk with bluish gray metal in *Petri sample data (pCi/g) based on measurements at approximately 10 em from detector. Discrete source data (-Ci) based on measurements at 1m from detector. Calibration data follows: (1) Net epm with PG-2 at 3, 4 and 5 inches from a 31,600 dpm 24l4m soil standard were 48, 23 and 14, respectively (approximate background of 30 epm, 1.6 x 10-8 epm/pCi at 4 inches); (2) Net epm with PG-2 at 1 meter from 0.52HCi 241 4m plated source was 30(58 epm/uCi). B-14-3 Te center