56
CL No.
B.
Volume
Collection Period
(tt3x10-5)
ppm sr90/106£43
773=P
April 4-5, 1955
1,32
8h+
774=P
April 11-12, 1955
1.93
71.5 + 3.3
775=P
April 18-19, 1955
2.27
65 + 6
776=P
April 25-26, 1955
1,82
22.5 + leh
777=P
May 23, 1955
1.34
709 + 52
778-P
May lo-11, 1955
1.54
265 + 12
779-P
Hay 17-18, 1955
1.37
178 + 16
780-P
May 2-25, 1955
1.69
755 + 33
917-P
June 16-17, 1955
1.43
710 + hO
918-P
August 5-8, 1955
3.0
300 + 20
919-P
August 12-16, 1955
heSl
uo+h
920=P
August 19-22, 1955
3.5
12), + 6
921-P
August 26-29, 1955
3.6
226 + 16
922-P
September 26-27, 1955
1.53
1568 + 9
923-P
September 29-30, 1955
1.69
.
-
SrSurface Air Concentration, Foreign Locations
124 + 8
NYOO
There is considerable uncertainty in tne air volumes of samples
collected at Kodiak, T.A., Port Lyautey, F.!i., and Yokosuka, Japan
because the flow rate is not directly recorded. For the earliest
reports of air filter data for these three locations, the rated flow
rate times the total collection period was taken as the collected
air volume.
Because the flov rate falls off substantially as dust
accumulates on the filter, those sam»sles were overestimated in
volume and thus the revorted air concentration data vere too low.
It is considered that a better estimate of their air volume is
provided by the average “lashineton, D, C,. volumes for equivalent
collection neriods.
On this basis, the relative air concentration
data should be considerably improved, although their absolute
value mar be in error by as much as 50% or so.
All the earlier
reported air filter deta for Kodiak, Port Lyautey and Yokosuka
have been estimated on this basis, and the new results are presen=
ted belo.
8]
Pf