Aerokoj-Eneman Complex:
Aerokoj, Aerokojlol
Bikdrin,
Eneman
Lele
|
-
*
6-10
*
1-570
East Eneman
West Eneman
1-10
20-570
Enidrik
3-235
East Enidrik
West Enidrik
3-30
10-235
Luk oj
60-200
®°co, **® sp,
1°2Mpy,
f°, *FF sp,
2o2@Mpy
©°co, *** Sb,
i°2Mpy,
Jelete
60-130
*
Oroken
15-45
*
Bokaetoktok
Bokdrolul
10-35
20-50
*
Bokbata
= eee
1-10
10-30
Aomen~Iroij Complex:
Aomen
Lomilik
Odrik,
5-20
20-330
Iroij
10-40
*No sOil sample or field spectra measurements.
©°Co,
*?7 Cs
*
*°co, **®sb
*
Department © offices
It should be noted that these are the ranges of our measure-
ments.
It is guite likely that there are locations where
the local exposure rates are higher than the upper limits
given in the table.
Since *°’cs has a half life of 30.5 years as compared
to half lives of 2.7 and 5.2 years for ***Sb and °°Co,
respectively, the exposure rate levels on islands where
*37cs was the major contributor, most importantly Bikini,
can be expected to persist at almost the current levels
for some time to come with only slight reductions due to
decay and weathering.
Studies of **’cs penetration into
soils usually have indicated that in undisturbed soils with
high organic content very little penetration of *°’cs takes
~ 41 -