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UNIVERSITY OF CALIFORNIA
RADIATION LABORATORY
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BERKELEY 4, CALIFORNIA
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wovember 19, 1958
HDT~611~58
Br. Gordon M. Dunning, Chief
Radiation Effects of Weapons Branch
Division of Bicology and Madicine
U.S. Atomic nergy Comission
Washington 25, D.C.
lef: EMREW:CMD of 11/10/52
Dear Dr. Dunning:
HKesponding to your request of November 10, we have gathered together
material covering air samples taken outdoors at a nuaber of locations as
follows:
UCHL-Berkeley
Oct. L5-Neve 10, inc. "Daily", one station
UCRL-Livermore
"
"
"
"Daily*, one station
*
“
environs (off-site) “weekly", eleven stations
General Zlectric Vallecitos Lab,
4, on-site locations
California State Dept. of Public Health, Berkeley, one station
"
*
"
"
"
"
Los Angeles, one atation
We also sutmit data on rain water samples from two sites, viz;
UCkL-Berkeley
General Electric-Vallecites
Factors for conversion of counting information from counts per minute
to mierocuries per cc (or whatever) are not crifically examined herein but
all air sample data has been expressed in nefwith the exception of General
Electricts counts per mimate date taken daily on an integrated basis from
samples remaining on stream for one week.
The most. extensive data and comparisons exist between our Berkeley and
Livernere collections. ‘The basic records are tabulated in axtenso. We have
constructed amoothed decay curves for each "daily" sample and extracted the
5, 75, 150 and 300 hour values therefrom for tabulation and graphical presentation below.
We call your attention hewever to the fact that certain UCEL
off-site “weekly” samples (of actually much less than 1 week's duration)
showed considerably higher activity than any other.
not graphed.
These are tabulated but
For your convenience we are including in the original (not in the
copies) a road map and a tepographical map assembly, the latter indicating
locations of UCAL off~site samplers about the Livermore project.