Table 1. Summary of Environmental Studies Dealing With Plutonium Uptake in Small Mammal Populations. | | Sample X Pu nCi/g dry wt, Soil 4.6 X 1072 Vegetation $mall Mammals Carcass 4.6 X 10 Soil 3.1 xX 107% Vegetation Small Manmals c6E Hide Carcass 7.1 X% 10 4.6 X 10 1.4 XK 10 1.2 X 10.2 4.1 X 10% Carcass 1976 Savannah River -1 1.4 X 10 9.7 X10 2 6.5 XK 10 Johnson, 1973 Trinity Site ° 8.6 X 10-5 Soil Hide -2 Hakonson and “5 2.9 % 10 Vegetation Small Mammals GI Tract Reference . 3.0 X 10 Soil X Pu Tissue / Vegetation Ratio McLendon et al., -7 Vegetation $mall Mammals GI Tract Hide Carcass Table 2. X Pu Tissue /Soil Ratio Little, 1976 Rocky Flats 3 7.0 X 10_5 1.5 X 1013 8.6 X 10 1.0 KX 10 -2 -1 2.5 X 10 Little, 1976 5.6 X 10 Rocky Flats 3 2.2 X 10; 2.6 X 10-5 7-3 X10 1.8 K 10 1 4 1.3 X 10 IL ‘ of NAEG Intensive Study Area 1 1-c, Plutonium Concentrations in Resident Small Mammals NTS (Moor et ai., 1976). Sample High Activity Strata* Soil Vegetation Small Mammals GI Tract Carcass C6E Low Activity Strata** Soil Vegetat iont Small Mammals X Pu aci/g dry wt . 4.9 % 10 -2 Carcass Dipodomys spp. Hide GI Tract Carcass 5.2 +0.3 6.741.3 6.8 X 10 “4 3 .5 X10. 9.2 + 1.6 o 5.1 X 10 Lx 6.0 + 0.3 5.2 20.2 -2 Ws, -3 1.9 ¥ 10 3. 7X 10° ° a . ton ' 1.5 x 10 -1 2.1 x 10 ° 3.2 x tee 1.0 -3 3.3 X 10 *>25,000 CPM 2“1am based on FIDLER Surveys. #%<25,000 CPM 241Am based on FIDLER Surveys. s Pu/Am X + SE 6.0 + 0.3 1.5 x 10.) Carcass Gi Tract Ratio o 2.9 x 10 Hide Ti ssue Vegetation +1 1.4 X10 ne x tot Perognathus Longimembris x is 1 Tissue/Sol Ratio 7.2 X 10, Hide GI Tract . | 4.6 X 10 73 -5 Rommey e¢ al,, 1975. +Values calculated from data presented by 1.1 xX 10° 2.4 X 10° . 3 1 3 6.3 + 0.6 6.2 + 0.3 7.2 41.2 3.4 + 0.7 6.2 £ 0.2 6.5 20.4 5.1 + 1.0 6.7 + 0.2 5.8 £ 0.7