' dn drinking water and food samples collected during and after this
period were not significantly different from the levels detected
in preoperational samples.
a
Washington Island
On May 7 and 21, 1962, fission products were detected in precipitation samples.
The presence of this radioactivity wes re-
flected also in scavole and grass samples vy
levels of fission
products in precipitation samples indicated an increase to about
8,700 wuc/l gross beta on May 14, 1962.
this activity was decreasing rapidly.
However, on the 15th,
Drinking water collected
at this time showed 650 uuc/1 gross beta activity, of which
25 aue/2 was I-131.
This is far below the level at which the wa-
ter would be unsafe to drink.
Palmyra Island
The highest air concentration was 58 ye[ME » observed on
‘June 25, 1962.
Other peaks of air activity were 43 yuc/e on
May 17, 1962, and 39 yuc/M? on June 21, 1962.
Penr’
Island
On May 13, 1962, the level of I-131 detected in precipitation
was 3,600 wic/1.
fission products.
This was attributed to rain-out involving fresh
If an adult had drank one liter of this water
DOE ARCHIVES
1/ Since there sre few grazing animals present on these ielands,
levels of contamination of grass and scavola sre only indicative of same fallout.
67