a
15-10
10/82
6
6-8
10/63
10/62
4
3
10/62
10/62
10/63
9
6
6
10/62
10/63
9
lo
10/62
10/63
10/62
10/63
6
3
«15
11
4-7
2-4
2-5,
6-38
4
a-4
2
5-9
5-9
1-4
2-8
3-5
4-8
5-3
1-14
8-15
7-4
7-9
11-2
1
2-3
1-2
3-8
2-4
}, Louisiana (1), Arkansas (1), Alabama (2),
in (1), Minnesota (1), Eastern South Dakota
issouri (2),
side. Spiers’ has observed dose
rious structures during periods
n, although these were generally
an the corresponding outdoor
that the effect of deposition of
‘vironment on indoor y-radiation
spendent on the type of building
e walls, the number and size of
hat is, doors and windows), the
ssence of other buildings nearby,
3 which the fall-out is tracked
ested applying a shielding factor
r measurements as a means of
it to the dose-rate contribution
uation exposure, this figure being
or observations in houses. The
oactivity from hard surfaces by
73 & part in reducing the outdoor
pulation, particularly in urban
(2)
Fail-outt
q)
Total
63 0019 CT BE I hs
C8 63.60 69 OO CUA HOD
ODBoOoanNews
Soe*enAQnan
AWS PO MHS
eee SSOnAS
ARAMA
COL
at
_ e+ ee
oe te
econ esenAQrine
SSO Ios
ees ee et tet
ser Of people see very little open
that open field measurements
8
Sequim
Port Angeles
Port Angeles
Joyce
Clallam Bay
Forks
» about 80-90 per cent of the
3 at various locations in the
stalled data for individual loca-
©
.y-levels. The dose-rate ranges
Sequim
out y-radiation.
mmary of the results obtained
63 survey trips with respect to
Town
arestimate of the total exposure
¢ (1) From photopeak calibrationa: (2) from total energy measurements.
4/68
3-5
Natural
3-10
OD i HOS NOD Se afi
Ores seta eon as
Zr-Nb
6-15
6
3
Seems QN clan
(me./mile*) ¢
4-7
10
4/63
4/63
y- Dose rates (ur./h)
3-7
9/63
SAO GE Ow,
Th
3-4
3-5
3-5
4-5
2-3
4-5
2-3
3-6
oor
5-7
4-3
5-10
7
4-8
4-8
6-15
6-8
Mean
annual
rainfall
(in.}*
8/63
35
3/63
«19
5-9/62
3
§-9/63
3
7/62
26
3/63
8
7/6239
5/63
5
Dose-rate range (yr./h)
(nmaturaly)
(fall-out y)
MEASUREMENTS ON THE OLYMPIC PENINSULA, WASHINGTON, OCTOBER 1-2, 1962
No.
Loc.
Table 4.
Date
* 1960-1962 value(ref. 25). + October 1-2, 1962, soil determinations (ref. 25).
with natural component subtracted.
OF 1962-63 SURVEY RESULTS