Air Concentration Summaries from

Environmental Surveillance Reports

White Rock Nazarene Church

------------------------------------------------------

Calendar
Total Air
Total #
# Samples
Air Concentrations

Year
Volume (m3)
Samples
< MDA
------------------------------------------------------

Min
Max
Mean Std.Dev. Units

====================================================================================================

Pu-239

1990 23012
1
1
0.7
0.7
0.7
aCi/m3

1991 101544
4
4
0
1.3
0.7
0.4
aCi/m3

1992 60712
4
3
0.8
4.2
2
6.1
aCi/m3

1993 44400
3
3
1
1.9
1.3
1
aCi/m3

1994 56700
4
3
-0.3
4.3
1.1
4.3
aCi/m3

1995 4
4
0.3
2.2
1.3
1.6
aCi/m3

1996 4
3
0.3
2.4
1.2
0.9
aCi/m3

1997 4
4
-0.5
0.5
0.2
0.5
aCi/m3

1998 4
3
-0.3
1.7
0.7
0.8
aCi/m3

1999 4
4
-0.2
3
0.9
1.4
aCi/m3

2000 4
4
-0.5
0.5
-0.1
0.4
aCi/m3

U

1990 23012.2
1
19.9
19.9
19.9
pg/m3

1991 101544
4
11.4
51.4
25.3
2.5
pg/m3

1992 60712
4
14
59
30.2
21
pg/m3

U-234

1992 60712
4
4
12.5
8.6
7.1
aCi/m3

1993 29300
2
3.2
4.1
3.7
aCi/m3

1994 56700
4
1
0.9
18.6
7.1
15.8
aCi/m3

1995 4
2
2.5
20.7
8.8
16.3
aCi/m3

1996 4
1
2.5
13.8
9.5
4.9
aCi/m3

1997 4
2
4.2
8.2
6.5
1.9
aCi/m3

1998 4
3
4.1
8.4
5.7
2
aCi/m3

1999 4
1
5.5
11.5
9
2.6
aCi/m3

2000 4
1
0.8
15.4
8
6.7
aCi/m3

=====================================================================================================

Tuesday, December 24, 2002 Page 3 of 4
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