DEPTH DISTRIBUTION
PLUTONIUM-239 AND CESIUM-137
AT ROCKY FLATS
PERCENT OF ACTIVITY IN TOP 10-cm
PRESENT ABOVE THE INDICATED DEPTH
I Pu-239
@ MEAN +: STD DEV.
-
3 Cs-137
ae
T
5
—_ oa
PERCENTOF ACTIVITY (0 to 10cm) ABOVE
THE INDICATED DEPTH
80=
DEPTH (cm)
Fig. 7
663
10