Interim Baseline Radiological Investigation Report in
Support of the Upton Rare Earth Processing Plant
November 15, 2012
35
Table 8.4. Lanthanide Concentrations on Filters and in Air
Sampling Interval
Filter
Concentration
(µg f
-1
)
MDL
(µg f
-1
)
Reporting
Limit
(µg f
-1
)
Location Start Date End Date
Volume Sampled
(scm)
Ce
La
Ce
La
Ce
La
UAMS-01
6/12/2012 6/15/2012
5569
22
11
0.4
0.4
1
1
6/21/2012
7/5/2012
18658
61
30
0.4
0.4
1
1
7/12/2012 7/26/2012
21585
38
19
0.4
0.4
1
1
UAMS-02
6/12/2012 6/21/2012
14783
18
9
0.4
0.4
1
1
6/28/2012 7/12/2012
22842
34
17
0.4
0.4
1
1
UAMS-04
6/12/2012 6/28/2012
26153
31
15
0.4
0.4
1
1
7/5/2012
7/19/2012
22781
21
10
0.4
0.4
1
1
Notes:
Ce = cerium
La = lanthanum
MDL = method detection limit
scm = standard cubic meters
µg f
-1
= micrograms per filter
µg m
-3
= micrograms per cubic meter
Table 8.5. Summary Statistics for Lanthanide Concentrations in Air
Lanthanide Concentration
(µg m
-3
)
Average
Standard Deviation
Minimum
Maximum
Location
Ce
La
Ce
La
Ce
La
Ce
La
UAMS-01
3.0E-03 1.5E-03 1.1E-03
5.6E-04
1.8E-03 8.8E-04 4.0E-03 2.0E-03
UAMS-02
1.4E-03 6.8E-04 1.9E-04
9.6E-05
1.2E-03 6.1E-04 1.5E-03 7.4E-04
UAMS-04
1.1E-03 5.1E-04 1.1E-03
9.5E-05
9.2E-04 4.4E-04 1.2E-03 5.7E-04
Site-Wide
2.0E-03 9.8E-04 1.2E-03
5.8E-04
9.2E-04 4.4E-04 4.0E-03 2.0E-03
Notes:
Ce = cerium
La = lanthanum
µg m
-3
= micrograms per cubic meter
8.2 Particulate Matter Fractions
RER conducted Particulate Matter 2.5 (PM
2.5
: particles with a nominal diameter less than 2.5
microns) and Particulate Matter 10 (PM
10
: particles with a nominal diameter less than 10
microns) measurements for 24 hours at each of the four AMS locations, to further characterize
particulates in air.
Tables 8.6 and 8.7 list the individual concentrations of the PM
10
and PM
2.5
filters, respectively.
PM
10
and PM
2.5
concentrations were determined by dividing the laboratory-reported mass by the
volume of air sampled in the 24-hr period. The concentrations are compared therein to their
respective 40 CFR 50 standards.
