Interim Baseline Radiological Investigation Report
November14, 2012
Bear Lodge Project, for Rare Element Resources, Ltd.
Rev.1
47
Table 8.7 PM
2.5
Concentrations Measured at Bear Lodge AMS Locations
Location
Start Date
End Date
Filter No.
Filter Weight
(g)
Volume
(scm)
Concentration
(µg/m
3
)
Mean
(µg/m
3
)
Maximum
(µg/m
3
)
% of
Standard
(Mean)
AMS-01
2/14/2012
2/15/2012
58523
0.0001
1631.08
0.06
7.2
30.1
47.9
3/14/2012
3/15/2012
58580
0.0015
1571.99
0.95
4/11/2012
4/12/2012
58588
0.0061
1507.86
4.05
5/9/2012
5/10/2012
58596
0.0078
1632.16
4.78
6/6/2012
6/7/2012
58680
0.0053
1632.35
3.25
7/5/2012
7/6/2012
58695
Filter Damage
1362.45
-
8/3/2012
8/4/2012
58762
0.0487
1622.28
30.02
AMS-02
5/14/2012
5/15/2012
58597
0.0144
1670.62
8.62
21.1
59.2
140.4
6/11/2012
6/12/2012
58681
0.0966
1631.85
59.20
7/9/2012
7/10/2012
58696
0.0571
1649.78
34.61
8/8/2012
8/9/2012
58764
0.0216
2899.56
7.45
2/22/2012
2/23/2012
58576
0.0010
1570.64
0.64
3/19/2012
3/20/2012
58581
0.0279
1630.95
17.11
4/16/2012
4/17/2012
58589
0.0326
1644.72
19.82
AMS-03
3/5/2012
3/6/2012
58577
0.1533
2255.31
67.97
75
346
501
3/28/2012
3/29/2012
58584
0.569
1644.24
346.06
4/25/2012
4/26/2012
58592
0.0013
1842.48
0.71
5/23/2012
5/24/2012
58676
0.0178
1501.39
11.86
6/21/2012
6/22/2012
58687
0.0099
1533.11
6.46
7/23/2012
7/24/2012
58753
Filter Damage
1480.42
-
AMS-04
4/2/2012
4/3/2012
58585
0.0037
1631.42
2.27
5.9
9.3
39.1
4/30/2012
5/1/2012
58593
0.0073
1587.88
4.60
5/28/2012
5/29/2012
58677
0.0116
1600.40
7.25
6/25/2012
6/26/2012
58690
0.0142
1522.07
9.33
7/25/2012
7/26/2012
58756
Filter Damage
1597.96
-
Notes:
a
Filter damaged
PM
2.5
= particulate matter, diameter less than 2.5 microns
scm = standard cubic meters
µg/m
3
= micrograms per cubic meter
