Air Concentration Summaries from

Environmental Surveillance Reports

TA-53

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

Calendar
Total Air
Total #
# Samples
Air Concentrations

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

Min
Max
Mean Std.Dev. Units

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

Pu-239

1971B 3
130
57
150
aCi/m3

1972 148
45
aCi/m3

1973 82
24
9
aCi/m3

1973 18
8
2
aCi/m3

1974 105
31
4
aCi/m3

1975 53
22
2
aCi/m3

1976 100189
8
3
-0.1
8.5
5
1.1
aCi/m3

1977 90784
5
0.4
24
18
33
aCi/m3

1978 91191
4
4.2
33
17
51
aCi/m3

1979 89237
5
1
-0.02
12
4.9
6.4
aCi/m3

1980 89641
4
2
-2.4
27
7.2
13
aCi/m3

1981 49899
4
1
0.4
18
6.3
7.7
aCi/m3

1982 84524
4
3
0.2
3.7
2.2
1.5
aCi/m3

1983 86289
4
4
0.6
1.6
1
0.5
aCi/m3

1984 93019
4
4
-1.2
2.3
0.6
1.5
aCi/m3

1985 110329
4
1.5
2.5
2
0.3
aCi/m3

1985 110329
4
4
0.1
0.8
0.4
0.3
aCi/m3

1986 102235
4
4
0.2
1.4
0.8
0.6
aCi/m3

1987 104546
4
4
0
0.8
0.4
0.4
aCi/m3

1988 68653
4
2
0.5
5.4
2.3
2.2
aCi/m3

1989 80440
4
4
0.4
1.6
1
0.5
aCi/m3

1990 73441
4
3
0.8
2.5
1.5
0.7
aCi/m3

1991 69279
3
2
0.9
6.4
3
0.7
aCi/m3

1992 74341
4
4
1
2.1
1.5
3.9
aCi/m3

1993 43300
3
3
0.9
2
1.4
1.1
aCi/m3

1994 55300
4
3
-0.4
3.2
1.5
3.4
aCi/m3

1995 4
2
0.9
24.2
7.6
22.3
aCi/m3

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

Tuesday, December 24, 2002 Page 6 of 8
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