Air Concentration Summaries from

Environmental Surveillance Reports

TA-54

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

Calendar
Total Air
Total #
# Samples
Air Concentrations

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

Min
Max
Mean Std.Dev. Units

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

Pu-238

1976 50963
4
2.3
6.6
4.3
1.2
aCi/m3

1977 99933
5
3
-3.9
33
2.3
1.8
aCi/m3

1978 99251
4
3
0.3
8.8
3
6.8
aCi/m3

1979 91963
5
5
-2.9
2
-1
4.2
aCi/m3

1980 95669
4
3
-1.2
4.2
1.3
2.3
aCi/m3

1981 55666
4
3
-2.2
4.1
0.9
2.7
aCi/m3

1982 82659
4
3
-0.1
3.2
1.3
1.4
aCi/m3

1990 78298
4
4
0.6
1.2
0.9
0.2
aCi/m3

Pu-239

1976 50963
4
4.9
69.9
26.8
2.9
aCi/m3

1977 99933
5
26
58
34
30
aCi/m3

1978 99251
4
15
153
80
120
aCi/m3

1979 91963
5
1
-0.1
132
23
70
aCi/m3

1980 95669
4
1
0.9
30
13
13
aCi/m3

1981 55666
4
1
1
17
10
7
aCi/m3

1982 92659
4
1
1.7
38
13
17
aCi/m3

1983 92561
4
4
0.2
1.1
0.7
0.4
aCi/m3

1984 99531
4
1
2.9
48.3
18.1
21.2
aCi/m3

1985 100026
4
4.2
50.8
29.5
19.7
aCi/m3

1985 100026
4
3.2
28.5
18.5
9.7
aCi/m3

1986 67434
4
7.8
36.8
22.6
11.9
aCi/m3

1987 91599
4
2.8
36.8
13.5
15.7
aCi/m3

1988 67033
4
2
1.2
53.4
17.8
24.5
aCi/m3

1989 75845
4
3.4
32.3
17.3
15.6
aCi/m3

1990 78298
4
2.1
9.3
3.9
3.6
aCi/m3

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

Tuesday, December 24, 2002 Page 3 of 4
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