Interim Baseline Radiological Investigation Report in
Support of the Upton Rare Earth Processing Plant
November 15, 2012
19
Table 4.2. Laboratory Analytical Results for Soil Samples
Radium-226
(pCi g
-1
)
Radium-228
(pCi g
-1
)
U-nat
(mg kg
-1
)
Th-nat
(mg kg
-1
)
Sample Location
Result
Error
± 1σ
RL Result Error ±
1σ
RL Result MDL
Result MDL
SS-01-SS-061412
1.4
0.4
0.3
0.0U
0.5
0.3
1
0.01
7
0.02
SS-02-SS-061412
1.6
0.4
0.3
2.1
0.5
0.3
1
0.01
12
0.02
SS-03-SS-061412
1.5
0.5
0.3
0.0U
0.5
0.3
2
0.02
9
0.02
SS-04-SS-061412
1.5
0.5
0.3
0.0U
0.5
0.3
ND
0.01
8
0.02
SS-05-SS-061412
1.6
0.6
0.3
1.9
0.7
0.3
2
0.01
12
0.02
SS-06-SS-061412
1.6
0.4
0.3
2.3
0.8
0.3
2
0.01
13
0.02
SS-07-SS-061412
1.8
0.5
0.3
0.0U
0.5
0.3
2
0.01
13
0.02
SS-08-SS-061412
2.3
0.5
0.3
2.4
0.8
0.3
2
0.01
14
0.02
SS-09-SS-061412
1.5
0.6
0.3
0.0U
0.5
0.3
1
0.01
8
0.02
SS-10-SS-061412
1.8
0.6
0.3
0.0U
0.5
0.3
3
0.01
15
0.02
SS-11-SS-061412
1.9
0.6
0.3
2.4
0.6
0.3
2
0.01
10
0.02
SS-12-SS-061412
1.0
0.3
0.3
2.2
0.6
0.3
2
0.01
11
0.02
SS-13-SS-061412
1.0
0.3
0.3
0.0U
0.5
0.3
1
0.01
6
0.02
SS-14-SS-061412
2.2
0.7
0.3
0.0U
0.5
0.3
2
0.01
13
0.02
SS-15-SS-061412
1.6
0.5
0.3
0.0U
0.5
0.3
2
0.01
13
0.02
SS-16-SS-061412
2.3
0.6
0.3
0.0U
0.5
0.3
2
0.01
10
0.02
SS-17-SS-061412
a
1.4
0.5
0.3
2.4
0.9
0.3
2
0.01
11
0.02
SS-18-SS-061412
a
1.8
0.5
0.3
2.3
0.7
0.3
3
0.01
14
0.02
SS-19-SS-061412
a
1.5
0.5
0.3
0.0U
0.5
0.3
3
0.01
14
0.02
SS-20-SS-061412
a
1.6
0.5
0.3
0.0U
0.5
0.3
2
0.01
7
0.02
Notes:
a
Duplicate sample.
MDL = method detection limit
mg kg
-1
= milligrams per kilogram
pCi g
-1
= picocuries per gram
RL = reporting limit
σ = standard deviation
U = undetected
ND = not detected
4.3
Summary of Radium-226 Results
The following discussion is based largely upon the results and spatial distributions reflected in
the supporting figures and tabular summaries.
Table 4.3 presents the summary statistics for radium-226 concentrations in surface soil.
