Depth — tk 100 100 10 Uren [38 5D 59 S230-7_1.83O 0) Te eC 20| -S—— * tt 10 IO)238—— 0:46 3.4 6.7 1.8 4040-3: Vey |0.01 0,14 i 60 {9-04 0.02 0.07 39 [0-01 . 0.007 0.03 100 /0:03 110 |0:008 190 |0:003 130) — 140{ «0.02 0.68 0.02 _— _ 70 0:04 90 0:03 150 L_1 0.0! 0.03 O47 1.3 0705 0.04 0.03 0.009 0.54 0.68 0.007 0.03 0,01 0.07 0,03 0.008 0,03 0.4 0.02 0.05 0,04 0.05 _ _ 105 124 129 | 0.02 0.0] 0.0] m9 COAT OT JENN LS sari 0.02 0.08 = 0.01 i _ _ { 103 0.02 0.06 0.08 0.97 _ _ j 102 0.05 0.03 0.01 _ _ | 101 Profile location number Fig. 153, Plutonium profile data, 129, YVONNE. Locations 101-103, 105, 109, 114, 119, 124, and Denth _ cm 10 lots:8 Surfece 10$4410 62\ —— je [0:02 4 “toro 5.0 50| ay 5:4 oo lCt3/ 1190/0223 2 4 Wrens rOpyo.05 70:09 90 0.59 1994-222 1207 130) — 159 LI 4of— 142 2:5 3.0 2.9 2.1 3.0 — — i 21 \26 3.2 1.8 4.7 12 2.8 5.6 4.8 3.8 12 TS. ,0.007\ sf 141 140 14 £1.03 0.20 0.64 , 14-075 [0.02 0,03 0.30 «2.3 3.6 0,007 0.08 0.005 0.02 0.005 0.91 0.92 1.4 4,23 — i 1.8 ' 1.5 — [ 10 /8.4 +, 0.01 0.03 0.03 0.01 0.04 0.07 0.01 0.02 9.01 == 0.91 — —- — — | — | 139 | 138 137 0.40 0.11 0.03 0.04 10 mS 4.4 ie 24 2.8 2.8 3.0 —- 150 33 NZS 0,407 6.50 (0.28 0.73 0.07 0.02 13.9 \6.78 0.02 \p.26 Oya2 0.01 1.3 l ‘| 0.04 “Or0—n10 0.07]! 0,008 0.01 0,02 0,01 0.02 0.3A_ 2.8) 0,03 0.007 0.27 “OFI7 0.03 0.005 0.02 om — — | 136 9.03 “= — — | 135 0.16 “— 0.02 — 0.98 <= — — — 134 133 — ! — — | 132 Profile location number Fig. 154, Plutonium profile data, Locations 132-142, YVONNE. (0.07 pCi/g). Comparison of these data lagoon with mean residence half-times with similar data obtained in 1964 indi- of 3,3 and 4.1 yr, respectively, while cates that, in addition to physical decay, 207 5% appears to be decreasing at approxi- 6065 and 13765 are being lost from the mately its radioactive decay rate, U-18 - 905 5,