Interim Baseline Radiological Investigation Report in
Support of the Upton Rare Earth Processing Plant
November 15, 2012
32
Table 8.2. Radionuclide Concentrations in Air
Location
Concentration (µCi ml
-1
)
% of Effluent Concentration
Lower Limit of Detection (µCi ml
-1
)
Start Date
End Date
Volume
(scm)
U-nat
Th-230
Ra-226
Th-nat
U-nat
Th-230 Ra-226 Th-nat
U-nat
Th-230
Ra-226
Th-nat
UAMS-01
6/12/2012
6/15/2012
5569
1.2E-16
1.7E-16
1.8E-16
2.4E-16
0.004% 0.006% 0.020% 0.030%
9.7E-21
9.9E-17
9.0E-17
7.9E-19
6/21/2012
7/5/2012
18658
1.1E-16
1.2E-16
1.6E-16
1.3E-16
0.004% 0.004% 0.017% 0.016%
2.9E-21
3.5E-17
3.2E-17
2.4E-19
7/12/2012
7/26/2012
21585
6.3E-17
6.0E-17
9.7E-17
6.1E-17
0.002% 0.002% 0.011% 0.008%
2.5E-21
2.3E-17
3.2E-17
2.0E-19
UAMS-02
6/12/2012
6/21/2012
14783
4.6E-17
8.1E-17
7.4E-17
4.5E-17
0.002% 0.003% 0.008% 0.006%
3.7E-21
4.4E-17
3.4E-17
3.0E-19
6/28/2012
7/12/2012
22842
9.2E-17
6.0E-17
5.5E-17
2.7E-16
0.003% 0.002% 0.006% 0.034%
2.4E-21
2.3E-17
2.6E-17
1.9E-19
UAMS-04
6/12/2012
6/28/2012
26153
5.2E-17
2.8E-17
6.1E-17
3.4E-17
0.002% 0.001% 0.007% 0.004%
2.1E-21
2.4E-17
2.3E-17
1.7E-19
7/5/2012
7/19/2012
22781
3.0E-17
5.3E-17
5.7E-17
2.9E-17
0.001% 0.002% 0.006% 0.004%
2.4E-21
2.0E-17
2.6E-17
1.9E-19
Notes:
Ra-226 = radium-226
scm = standard cubic meters
Th-230 = thorium-230
Th-nat = natural thorium
U-nat = natural uranium
µCi ml
-1
= micocuries per milliliter
