Interim Baseline Radiological Investigation Report in
Support of the Upton Rare Earth Processing Plant
November 15, 2012
33
Table 8.3. Summary Statistics for Radionuclide Concentrations in Air
Location
U-nat Concentration (µC ml
-1
)
Th-230 Concentration (µC ml
-1
)
Ra-226 Concentration (µC ml
-1
)
Th-nat Concentration (µC ml
-1
)
Avg
σ
Min
Max
Avg
σ
Min
Max
Avg
σ
Min
Max
Avg
σ
Min
Max
AMS-01
9.8E-17
3.1E-17
6.3E-17 1.2E-16
1.2E-16
5.5E-17
6.0E-17
1.7E-16
1.4E-16
4.2E-17
5.5E-17
1.8E-16
1.4E-16
8.9E-17
6.1E-17
2.4E-16
AMS-02
6.9E-17
3.2E-17
4.6E-17 9.2E-17
7.0E-17
1.5E-17
6.0E-17
8.1E-17
6.5E-17
1.4E-17
5.5E-17
7.4E-17
1.6E-16
1.6E-16
4.5E-17
2.7E-16
AMS-04
4.1E-17
1.6E-17
3.0E-17 5.2E-17
4.0E-17
1.8E-17
2.8E-17
5.3E-17
5.9E-17
2.9E-18
5.7E-17
6.1E-17
3.1E-17
3.3E-18
2.9E-17
3.4E-17
Site Wide
7.3E-17
3.5E-17
3.0E-17 1.2E-16
8.2E-17
4.9E-17
2.8E-17
1.7E-16
9.7E-17
5.1E-17
5.5E-17
1.8E-16
1.2E-16
1.0E-16
2.9E-17
2.7E-16
Notes:
Ra-226 = radium-226
σ = standard deviation
Th-230 = thorium-230
Th-nat = natural thorium
U-nat = natural uranium
µCi ml
-1
= micocuries per milliliter
