TAP WATER SAMPLES, LRL, BERKELEY
Samples were taken daily at 0900 from east sink tap, room 208, Building 4, after
letting water run for at least ten minutes.
One liter samples were evaporated to dryness and counted at least 7 hours on
3 mg/cm” end-window GM tubes.
Wide error spread ie due to relatively high background on GM counters.
Calculations are similar to those employed on rainwater samples.
TAP WATER RADIOACTIVITY
|
Sine
.
Date of Bample
Activity
Date of Sample
April 5, 1958
76220
May 26, 1958
32710
June
7
8
56214
9
86-20
12
22: 8
13
162 7
10
12
14
15
137 9
hotly
6* 6
2a- 6
18
29713
20
21
23% 9
e@2atg
23
<5
19
20
45213
6? 6
<5
2k
25
8t 7
yat 6
30
<5
2g
:
13: 8
16
17
May
50°18
8" 5
|
6
<6
9
i6
12
130
19°
20
22
<6
<
a)
<
<3
<i
<u
<5
9
<5
10
18t 7
16
5
18.
13 6
12
13
wat 5
Tt 5
17
May 14
15
June 20
30
g= 5
'
lhe 6
25
<6
koZ12
63213
July 2
1
7-5
28 8
7
27- &
3
22
7
T= 5
5
<
8
<5
<6
5
14- 6
<5
4
15
6
10> 6
3
aki 5
<3
Activity
2
19
16
he
A\ww an
27
1
2
on
|
Tz 5
<9
<6
Sampling Program Stopped
6= 5