Air Concentration Summaries from

Environmental Surveillance Reports

Well PM-1 (E. Jemez Road)

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

Calendar
Total Air
Total #
# Samples
Air Concentrations

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

Min
Max
Mean Std.Dev. Units

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

U

1971B 5
240
140
100
pg/m3

1972 110
60
pg/m3

1973 100
40
30
pg/m3

1974 230
100
30
pg/m3

1975 13
58
32
4
pg/m3

1976 105700
4
23
59
43
8
pg/m3

1977 98531
4
53
128
91
92
pg/m3

1978 92806
4
40
103
59
45
pg/m3

1979 84081
4
1
7
58
30
34
pg/m3

1980 88741
4
2
16
59
32
19
pg/m3

1981 49020
4
2
-1.9
45
17
23
pg/m3

1982 84434
4
35
65
51
13
pg/m3

1983 89712
4
24
45
26
17
pg/m3

1984 97077
4
1
1.3
48
18
21
pg/m3

1985 109273
4
12.9
28.7
18.2
7.1
pg/m3

1986 103057
4
13.3
21.2
15.4
2.8
pg/m3

1987 110612
4
15.4
20.9
19
2.6
pg/m3

1988 71298
4
34
41.9
38.1
3.2
pg/m3

1989 65787
4
43.9
80.3
59.2
15.7
pg/m3

1990 73.7888
4
24.8
56.4
38.5
14.3
pg/m3

1991 101572
4
13.3
58.2
30.4
3
pg/m3

1992 65152
4
20.6
45.5
29.7
34.3
pg/m3

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

Tuesday, December 24, 2002 Page 6 of 7
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