Table 3. (Cont.) Activity strata Mean + S.E. n (nCi/g dry)_ Mean a + S.E. b (nCi/m*) Inventory + S.E. (millicuries) Percent by Veg. invent. | s.E.c strata | Soil invent. "FT TTR Clean Slate 2 (1963) 1 18 2. 3 4 Total .0066 13 12 20 63 + .0013 047 -090 14 + .0055 + .019 + .032 1.7 12 23 35 + + + + 49 3.0 7.0 11 -59 + .17 1.0 58 39 2.6 + + + + .25 .18 .13 .38 4.3 + 1.4 + + 23 .00042 + .00019 75 .00023 + .000074 10 10 .000067 + .000028 .000097 + .000051 39.1 23 15 100.1 -00017 -000087 .00014 -00015 + + + + .000075 .000021 .000050 .000030 TTR Clean Slate 3 (1963) 1 10 -013 + .0042 3 4 10 10 .068 .17 + .015 + .055 cv 2 Total 11 .020 41 + .0038 2.7 4.2 14 36 +£ + + + .89 -82 3.3 12 .26 257 -58 5.7 + .05 .13 .19 + 1.4 5 100 .000072 + .000028 -00016 + .000037 “Mean (nCi/m’) = (mean biomass in g/m) xX mean 239-2405, concentration in nCi/g bsg. = +(mean g/m-)? x Var (mean nCi/g) + (mean nCi/g)* x Var (mean g/m) ~ Var (mean nCi/g) x Var (mean g/m-)1 c 2 S.E. =R + 2 Sy 8 y x y 3 + 7 2¢r Sx’ y xy 1 1/2 where R = x/y; r = estimated correlation between x, y.