239-240

Pu ACTIVITY (log d/m/g)

SOIL DEPTH (cm)

92

2
|

3
|

4
1

5

lO

® DOUBLE TRACKS
STR-5, STA-I3
= AREA II-D
STR-4, STA-I

IS

20

25
Fio.

3.

Distribution of plutonium in top 25 cm of soil.

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