Interim Baseline Radiological Investigation Report
November 14, 2012
Bear Lodge Project, for Rare Element Resources, Ltd.
Rev.1
28
Table 5.1. QA-QC Comparison Results
Radium-226 (pCi/g)
Radium-228 (pCi/g)
Thorium-228 (pCi/g)
Thorium-230 (pCi/g)
Client Sample ID
Collection
Date
Result
Error ±
1σ
RL
Result
Error ±
1σ
RL
Result
MDC
Error ±
1σ
Result
MDC
Error ±
1σ
SS-08-SS-081211
8/12/11
1.4
0.5
0.3
3
a
0.7
0.3
0.7
0.09
0.2
0.3
0.1
0.2
SS-09-SS-081211
a
8/12/11
1.6
0.5
0.3
0.0 U
a
0.3
0.3
0.9
0.1
0.3
0.4
0.2
0.2
SS-28-SS-081311
8/13/11
0.0 U
0.3
0.3
0.0 U
0.3
0.3
0.1 U
0.1
0.09
0.2
0.1
0.1
SS-29-SS-081311
a
8/13/11
0.0 U
0.3
0.3
0.0 U
0.3
0.3
0.08 U
0.1
0.09
0.2
0.2
0.1
SS-33-SS-081311
8/13/11
3.4
0.7
0.3
5.1
0.8
0.3
2.2
0.2
0.5
1.6
0.2
0.4
SS-34-SS-081311
a
8/13/11
3.1
0.6
0.3
5.4
0.8
0.3
2.7
0.2
0.6
1.6
0.2
0.4
Thorium-232 (pCi/g)
Uranium (pCi/g)
Client Sample ID
Collection
Date
Result
MDC
Error ±
1σ
Result
RL
SS-08-SS-081211
8/12/11
0.7
0.1
0.2
1.67
0.03
SS-09-SS-081211
a
8/12/11
1.2
0.1
0.3
1.73
0.03
SS-28-SS-081311
8/13/11
0.03 U
0.1
0.06
0.81
0.03
SS-29-SS-081311
a
8/13/11
0.06 U
0.1
0.08
0.87
0.03
SS-33-SS-081311
8/13/11
2.1
0.1
0.5
10.88
0.03
SS-34-SS-081311
a
8/13/11
3.3
0.2
0.7
8.55
0.03
Notes:
a
Anomalous QC result is highlighted.
MDC = Minimum Detectable Concentration
RL = Reporting Limit
