Interim Baseline Radiological Investigation Report
November 14, 2012
Bear Lodge Project, for Rare Element Resources, Ltd.
Rev.1
43
Table 8.4. Lanthanide Concentrations on Filters and in Air
Sampling Interval
Filter
Concentration
(µg/f)
Concentration in
Air (µg/m
3
)
MDL
(µg/f)
Reporting
Limit
(µg/f)
Location
Start Date
End Date
Volume
Sampled
(scm)
Ce
La
Ce
La
Ce
La
Ce
La
AMS-01
11/16/2011
11/21/2011
8066
13
7
2.E-03
8.7E-04
0.009
0.004
1
1
11/25/2011
12/19/2011
38930
12
6
3.E-04
1.5E-04
0.009
0.004
1
1
12/23/2011
1/13/2012
34402
13
7
4.E-04
2.0E-04
0.002
0.001
1
1
1/19/2012
2/14/2012
40850
14
7
3.E-04
1.7E-04
0.002
0.001
1
1
2/17/2012
3/9/2012
27713
13
6
5.E-04
2.2E-04
0.002
0.001
1
1
3/19/2012
4/6/2012
29400
20
10
7.E-04
3.4E-04
0.002
0.001
1
1
4/13/2012
5/7/2012
39299
15
8
4.E-04
2.0E-04
0.002
0.001
1
1
5/11/2012
6/1/2012
34259
17
8
5.E-04
2.3E-04
0.4
0.4
1
1
6/8/2012
6/29/2012
34288
30
16
9.E-04
4.7E-04
0.4
0.4
1
1
7/6/2012
7/30/2012
39023
32
18
8.E-04
4.6E-04
0.4
0.4
1
1
AMS-02
11/16/2011
11/28/2011
28139
24
14
9.E-04
5.0E-04
0.009
0.004
1
1
12/2/2011
12/23/2011
37680
15
8
4.E-04
2.1E-04
0.009
0.004
1
1
12/30/2011
1/20/2012
36329
11
6
3.E-04
1.7E-04
0.002
0.001
1
1
1/30/2012
2/21/2012
36049
20
12
6.E-04
3.3E-04
0.002
0.001
1
1
3/5/2012
3/19/2012
23001
15
8
7.E-04
3.5E-04
0.002
0.001
1
1
3/26/2012
4/13/2012
50873
20
11
4.E-04
2.2E-04
0.002
0.001
1
1
4/20/2012
5/11/2012
102489
12
6
1.E-04
5.9E-05
0.4
0.4
1
1
5/21/2012
6/28/2012
46643
12
6
3.E-04
1.3E-04
0.4
0.4
1
1
6/15/2012
7/6/2012
4013
81
47
2.E-02
1.2E-02
0.4
0.4
1
1
