Air Concentration Summaries from

Environmental Surveillance Reports

Pajarito Acres

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

Calendar
Total Air
Total #
# Samples
Air Concentrations

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

Min
Max
Mean Std.Dev. Units

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

U

1971B 7
250
120
60
pg/m3

1972 110
70
pg/m3

1973 200
100
100
pg/m3

1974 240
130
30
pg/m3

1975 9
53
28
3
pg/m3

1976 87112
4
32
56
45
6
pg/m3

1977 81337
4
42
104
72
72
pg/m3

1978 82758
4
45
79
58
28
pg/m3

1979 76581
4
1
17
65
35
42
pg/m3

1980 81948
4
2
10
50
32
19
pg/m3

1981 37783
4
2
21
97
62
40
pg/m3

1982 72821
4
37
77
56
22
pg/m3

1983 81535
4
20
150
55
64
pg/m3

1984 93993
4
5.2
33
19
14
pg/m3

1985 101489
4
15.9
30.8
22.8
6.2
pg/m3

1986 88893
4
10.7
62.6
28.4
23.6
pg/m3

1987 105964
4
11.3
25.5
19.8
6
pg/m3

1988 77414
4
27.3
40.4
34.2
5.7
pg/m3

1989 69362
4
35.4
98.6
68
34.8
pg/m3

1990 77823.7
4
20.7
52
30.8
14.7
pg/m3

1991 52932
2
14.5
37
25.8
pg/m3

1992 58919
4
4.6
29.7
20.7
48.5
pg/m3

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

Tuesday, December 24, 2002 Page 6 of 7
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