Air Concentration Summaries from

Environmental Surveillance Reports

Los Alamos Airport

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

Calendar
Total Air
Total #
# Samples
Air Concentrations

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

Min
Max
Mean Std.Dev. Units

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

Pu-239

1971A 6
140
89
aCi/m3

1971B 7
65
35
13
aCi/m3

1972 265
73
aCi/m3

1973 186
44
7
aCi/m3

1974 92
25
2
aCi/m3

1975 52
24
4
aCi/m3

1976 104319
8
2
1
12
6.8
6.8
aCi/m3

1977 77665
4
1
12
22
18
28
aCi/m3

1978 92171
4
5.9
33
20
41
aCi/m3

1979 101124
5
1
1.4
14
4.8
5
aCi/m3

1980 98689
4
2
0.4
34
9.8
16
aCi/m3

1981 55406
4
4.1
23
14
8
aCi/m3

1982 93687
4
4
-1.3
2.6
1.2
1.8
aCi/m3

1983 91518
4
4
-0.2
0.6
0.3
0.4
aCi/m3

1984 84811
4
4
-0.2
1.7
1
0.8
aCi/m3

1985 78555
4
1.9
4.8
3.7
1.1
aCi/m3

1985 78555
4
3
0.5
18.2
5.5
8.5
aCi/m3

1986 93782
4
2
1.6
2.8
2.1
0.5
aCi/m3

1987 93632
4
3
0.6
2.1
1.2
0.7
aCi/m3

1988 66914
4
4
0
1.3
0.7
0.6
aCi/m3

1989 74147
4
3
0.2
2
1.2
0.9
aCi/m3

1990 84295
4
4
0.5
1.9
1.5
0.7
aCi/m3

1991 43065
2
2
0.4
0.9
0.7
aCi/m3

1992 77457
4
4
0.6
1.7
1.3
3.7
aCi/m3

1993 42600
3
2
0
4.6
2.2
4.6
aCi/m3

1994 61500
4
2
0.1
4.6
2.5
4.4
aCi/m3

1995 4
2
1.4
5
2.8
3.2
aCi/m3

1996 4
1
0.8
4
2.9
1.4
aCi/m3

1997 4
4
0
1.9
1.1
0.9
aCi/m3

1998 4
4
0.7
3.8
3
1.5
aCi/m3

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

Tuesday, December 24, 2002 Page 6 of 8
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