DRC-2023-002736 - 0901a068811c6cd0

March 27, 2023
VIA E-MAIL AND EXPEDITED DELIVERY
Mr. Doug Hansen
Director, Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT 84116
Re: State of Utah Radioactive Material License No. UT1900479
White Mesa Mill, Blanding, Utah
Semi-Annual Effluent Monitoring Report for Period
July 1 through December 31, 2022 Revision 1
Dear Mr. Hansen:
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www .energyfuels.com
D
Attached please find enclosed two (2) copies of the revised Semi-Annual Effluent Monitoring Report
("SAER") for the White Mesa Mill for the period July 1 through December 31 , 2022. Thes updated pages
should replace the appropriate pages in Tab I in the previously submitted document, dated February 24,
2023.
Please contact me if you have any questions or require any further information on the revised SAER.
Yours very truly,
ENERGY FUELS RESOURCES (USA) INC.
f:t.!i~
Director, Regulatory Compliance
cc: Dave Frydenlund
Logan Shumway
Scott Bakken
Jordan App
John Uhrie
Garrin Palmer
DRC-2023-002736
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Jun-16
Aug-16
Oct-16
Dec-16
Feb-17
Apr-17
Jun-17
Aug-17 ~ (t)
Oct-17 t/) --Dec-17 ~ I Feb-18 0 ..a.
Apr-18 I
Jun-18 ~ I 0 Aug-18 (D -Oct-18 "'ti
C"' Dec-18 I "->
Feb-19 ..a.
0
Apr-19
1>
C')
0 Jun-19 ::::,
0
Aug-19 ♦ (t)
+ ::::,
Oct-19 --,
D)
Dec-19 !:!:.
0
Feb-20 ::::,
t/)
Apr-20 ::::,
Jun-20 ,~ (J)
Aug-20 0 .
Oct-20 -
I
"O
Dec-20 C') ::.:
Feb-21
(C -
Apr-21
',I \'\ Jun-21
Aug-21 .,~ Oct-21
Dec-21
Feb-22 If/ ♦ I + + t + + t Apr-22 •
Jun-22 ? ? ? ? ? ? ? ? ? 0 0 0 0 0 0 0 0 0 _i .. I. \ C.OCX>----JO><.n.i,:..<..vN
Aug-22
0 0 0 0 0 _.
0 N .is. 0) co 0
Aug-15
Oct-15
Dec-15
Feb-16
Apr-16
Jun-16
Aug-16
Oct-16
Dec-16
Feb-17
Apr-17
Jun-17
Aug-17
Oct-17
Dec-17
Feb-18
Apr-18
Jun-18
Aug-18
Oct-18
Dec-18
Feb-19
Apr-19
Jun-19
Aug-19
Oct-19
Dec-19
Feb-20
Apr-20
Jun-20
Aug-20
Oct-20
Dec-20
Feb-21
Apr-21
Jun-21
Aug-21
Oct-21
Dec-21
Feb-22
Apr-22
Jun-22
Aug-22
_. _.
N ~ 0)
_.
co
N
0
:E (I) en -~ I ~
0
:E I ~
0) -"'tJ
C" I N ~
0
(")
0
::::I (")
(I)
::::I -""I D) e. 0
::::I en
::::I
en 0 -'t:J
(") :::.: (C -
+ + t + + + ? ? ? ? ? ?
.....lt. .....lt. .....lt. .....lt. .....lt. .....lt.
U,-l'-WN_.O
0
0
AUg-10 I ,1 j -
Oct-15
Dec-15
Feb-16
Apr-16
Jun-16
Aug-16
Oct-16
Dec-16
Feb-17
Apr-17
Jun-17
Aug-17
Oct-17
Dec-17
Feb-18
Apr-18
Jun-18
Aug-18
Oct-18
Dec-18
Feb-19
Apr-19
Jun-19
Aug-19
Oct-19
Dec-19
Feb-20
Apr-20
Jun-20
Aug-20 I♦
Oct-20
Dec-20
Feb-21
Apr-21
Jun-21
Aug-21
Oct-21
Dec-21
Feb-22
Apr-22
Jun-22
/
I •
? ? 0 0 CXl --..J
'
~ en ....
~ I 0
~
~ I 0 CD ---4 :::r
I I\,) w I\,)
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0
:l
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:l .... ~ ~
0 :l en
:l
(/)
0 -"C (') :::.: (C -
+ + t + + t ? ? ? ? ? ? 0 0 0 0 0 0 mtn-1'-WN~
Aug-22 1 ✓J / i 'j ~
0 0 0 0 0 0 0
0 ...... N (.,0 .l>,. u, CJ)
Aug-15
Oct-15
Dec-15
Feb-16
Apr-16
Jun-16
Aug-16
Oct-16
Dec-16
Feb-17
Apr-17
Jun-17 ) .. ....-"'--I Aug-17 ~ ♦ /l~ (I)
Oct-17 "' --Dec-17 ~ I Feb-18 ~
0
Apr-18 I
Jun-18 ~ I ~ Aug-18 00 -Oct-18 -4 ~ Dec-18 I N
Feb-19 (,,)
N
Apr-19 ()
0
Jun-19 :::s
0
Aug-19 (I)
:::s
Oct-19 -"'I D>
Dec-19 ~
0
Feb-20 :::s "' Apr-20 :::s
Jun-20 en
Aug-20 0 :; -Oct-20 "C
Dec-20 ()
::::::.: co Feb-21 -
Apr-21
Jun-21
Aug-21 ~ ;
Oct-21 \ ~ /♦
Dec-21
Feb-22 ~ /
Apr-22 t r \A II~ ~ ~ t t t t t t .......... ..... ..... -lo. -Jr. -lo. -lo. -lo.
00 --..J O> c.n -I>-W N _. 0
BHV-1 BHV-2 BHV..J
Date Ra-226 U-Nat Pb-210 Th-232 Ra-22fi U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb-210 Th-232
917/1980 0.65 0.42 --0.34 0.42 --0.42 0.42 --
9/8/1981 0.4 1.8 --0.3 0.6 --0.3 0.6 --
12/3/1981 0.79 0.77 --0.44 0.56 --0.89 0.42 --
6/30/1982 0.423 0.384 --0.412 0.18 --0.265 0.207 --
5/5/1983 0.471 0.41 --0.569 0.55 --0.461 0.34 --
6/4/1984 0.713 0.866 --0.618 0.683 --0.489 0.471 --
10/12/1984 2.96 0.886 --2.33 0.069 --2.88 0.721 --
8/28/1985 1.63 0.8 --2.19 0.424 --2.27 0.424 --
8/1/1986 0.369 0.654 --0.466 0.866 --0.382 0.694 --
8/17/1987 0.6 0.8 --1.5 0.9 --0.8 0.6 --
8/28/1988 1.5 1.6 --1.3 0.7 --0.6 0.9 --
8/25/1988 1.2 1.6 --1.1 3 --0.8 1 --
8/1/1990 2.9 5.8 --1 1.4 --0.8 1.4 --
8/5/1991 3.9 8.8 --1.7 2.6 --2.6 5.7 --
8/13/1992 1.2 2.2 --0.9 1.4 --0.8 1.2 --
8/13/1993 2 1.7 --1.4 1.7 --1.1 1.9 --
8/3/1994 1 1.6 --0.7 0.8 --0.7 0.9 --
8/28/1995 2.81 4.7 --0.68 0.2 --0.88 0.65 --
8/13/1996 1.7 2.15 --0.6 0.46 --0.3 0.21 --
8/1/1997 0.54 0.31 --0.56 0.16 --0.41 0.27 --
7/1/1998 1.6 3.05 --0.7 0.58 --0.5 0.45 --
8/24/1999 2.27 1.74 --0.78 0.84 --0.53 0.42 --
12/1/2000 1.51 1.21 --0.81 0.53 --* * --
8/23/2001 1 I --0.6 0.3 --0.4 0.3 --
8/1/2002 1.3 135 --0.9 0.524 --0.5 0.297 --
8/5/2003 0.8 0.99 --0.6 0.79 --0.5 0.33 --
8/9/2004 0.6 0.61 --0.4 0.25 --0.4 0.22 --
8/3/2005 0.9 0.96 --0.7 0.34 --0.6 0.27 --
817/2006 0.7 0.76 --0.44 0.25 --0.41 0.25 --
8/8/2007 I.I 2.37 --0.7 0.53 --0.2 0.55 --
8/20/2008 0.9 1.23 --0.3 0.43 --0.6 0.98 --
8/10/2009 0.8 0.88 --0.7 0.54 --0.7 1.08 --
8/2/2010 1.3 1.09 --1 1.49 --0.8 0.62 --
8/23/2011 0.9 1.32 --0.4 0.32 --0.4 0.4 --
8/20/2012 0.5 1.96 --0.4 0.54 --0.7 1.09 --
8/21/2013 0.7 1.013 --0.3 0.405 --0.6 1.35 --
8/25/2014 0.8 0.945 --0.4 0.54 --0.5 0.675 --
8/18/2015 0.9 1.215 1.2 0.2 0.6 0.608 0.8 0.3 0.3 0.338 0.7 0.3
8/9/2016 0.5 0.4725 0.4 0.2 0.4 0.27 0.2 0.4 0.5 0.54 0.9 0.2
8/8/2017 1.2 1.35 2.1 0.3 0.5 <0.675 0.9 0.3 0.2 <0.675 0.8 0.2
8/23/2018 0.7 0.675 1 0.2 0.4 <0.675 1.5 <0.1 0.3 <0.675 1 0.3
8/27/2019 1.1 1.35 1 0.2 0.5 <0.675 0.7 0.2 0.4 <0.675 0.9 0.2
8/26/2020 1 0.675 1 0.3 1 0.675 1.1 0.2 0.5 <0.675 1.2 0.2
8/3/2021 0.7 1.35 1.4 0.4 0.5 <0.675 lJ 0 I 0.5 <0.675 1.2 0.2
8/31/2022 1.2 1.35 1.5 0.3 0.8 0.675 1.0 0.2 0.4 0.675 0.8 0.2
-Data not available.
< indicates the value reported by the laboratory. Negative values are reported as the MDC.
Table 1-1
WHITE MESA MILL
Soil Sampling Results at BHV Stations 1-8
(l!Ci/g)
BHV-4 BHV-S
Ra-226 U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb-210
0.41 12.194 --0.23 14.89 -
0.2 3 --0.3 0.6 -
0.75 0.63 --0.55 0.42 -
0.478 0.26 --0.449 0.216 -
0.643 0.34 --0.147 0.14 -
0.124 0.324 --0.132 0.31 -
3.49 0.804 --2.55 0.817 -
4.33 0.294 --1.28 0.577 -
0.396 0.826 --0.728 0.836 -
1.2 0.7 --1.5 1.3 -
1 1.3 --3.8 5 -
1.1 1.4 --2.9 5.7 -
1.8 1.3 --3.7 3.2 -
1.8 2.6 --2.5 4.4 -
0.9 0.9 --1.1 1.8 -
0.8 1.6 --4.8 3.5 -
0.7 1.1 --3 3.8 -
0.58 0.24 --2.8 1.6 -
0.5 0.52 --1.9 2.01 -
0.41 0.26 --1.7 1.5 -
I 1.19 --3 2.76 -
0.84 0.77 --3.27 3.15 -
0.83 1.22 --2.81 3.25 -
0.9 I --1.2 1.1 -
1.2 1.49 --2.4 2.81 -
0.6 0.43 --0.28 0.42 -
0.6 0.51 --1 1.4 -
0.6 0.38 --0.7 0.41 -
0.52 0.48 --1.4 1.3 -
0.5 0.74 --I.I 1.45 -
0.5 0.79 --0.8 1.33 -
0.8 0.61 --2.6 2.98 -
1.3 1.69 --1.7 1.69 -
0.5 0.58 --1 1.48 -
0.6 0.81 --1.6 2.7 -
0.3 0.54 --1.1 1.62 -
0.7 0.743 --2.8 3.71 -
0.5 0.54 0.2 0.3 1.2 1.215 1.0
0.5 0.2025 <0.09 0.4 1.2 0.54 0.4
0.7 <0.675 1.3 0.2 3.6 3.38 4.2
0.4 <0.675 0.6 0.2 2.2 2.70 3.1
0.6 <0.675 0.7 <0.1 2.6 1.35 2.4
0.7 <0.675 0.6 0.3 3.4 2.03 2.9
0.4 <0.675 1 0.3 3.2 2.03 3.0
0.7 <0.675 0.8 0.2 3.6 3.38 3.4
Th-232
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.3
0.4
0.2
0.2
0.1
0.2
0.3
0.1
BHV-6 BHV-7 BHV-8
Ra-226 U-Nat Pb~210 Th-232 Ra-226 U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb-210 Th-232
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
------
0.6 0.53 ------
0.9 1.4 ------
1 1.2 ------
0.78 0.65 ------
0.8 0.93 ------
0.5 0.67 ------
0.5 0.81 ------
0.8 0.87 ------
0.6 0.86 ------
0.8 1.37 ------
0.5 0.743 ------
0.4 0.81 ------
0.4 1.418 0.3 0.3 0.7 1.76 0.5 <0.09 1.0 0.338 0.8 <0.05
0.8 0.88 0.3 0.2 0.8 0.54 0.2 0.5 0.5 0.135 <0.08 0.3
0.6 0.68 0.6 0.2 0.7 1.35 0.8 0.2 0.6 <0.675 0.4 <0.08
0.7 2.03 1.2 0.2 0.7 2.03 0.8 0.3 0.5 <0.675 0.5 0.2
1.2 1.35 1.2 <0.05 1.1 2.70 0.9 0.3 0.3 <0.675 0.3 0.2
0.8 1.35 1 <0.09 0.8 1.35 0.6 0.4 0.5 <0.675 0.7 0.1
1 2.03 1.6 0.3 1 1.35 1.5 <0.2 0.5 <0.675 0.7 0.2
0.6 1.35 0.8 <0.08 0.9 2.70 0.8 0.1 0.4 <0.675 0.5 0.1
N-Dl N..e2 N-03
Samplecbm Ra-226 U-Nat Pb-21') Tb-232 Ra-226 U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb-210
Aug-15 0.3 0.47 0.8 0.3 0.5 0.41 0.3 0.3 0.6 0.61 0.9
Aug-16 0.5 0.2 0.6 0.2 0.6 0.2 0.4 0.5 0.5 0.2 0.6
Aug-17 0.7 <0.675 1.8 0.4 0.7 <0.675 l.l 0.3 0.9 0.7 1.3
Aug-18 0.5 <0.675 1.0 0.4 0.5 <0.675 l.l 0.2 0.8 0.7 2.0
Aug-19 0.4 <0.675 0.3 0.1 0.4 <0.675 1.0 0.2 0.4 <0.675 l.l
Aug-20 0.6 <0.675 1.2 0.2 0.6 <0.675 1.5 0.2 0.8 <0.675 1.0
Aug-21 0.4 <0.675 1.2 0.1 0.6 <0.675 0.8 0.2 0.9 0.675 2.2
Aug-22 0.4 <0.675 0.7 0.2 0.3 <0.675 0.6 <0.003 0.7 0.675 1.0
< indicates the value reported by the laboratory. Negative values are reported as the MDC.
Table 1-2
WHITE MESA MILL
Soil Sampling Results in the Four Cardinal Directions
(pCi/g)
N-D4 N-05
Th-232 Ra-226 U-Nat Pb-21& Th-232 Ra-226 U-Nat Pl>-210 n-232
0.4 0.6 0.41 0.2 0.2 0.8 0.95 1.0 0.3
0.4 0.7 0.1 0.6 0.4 0.9 0.34 0.5 0.4
0.3 1.0 0.7 1.4 0.3 . 0.6 <0.675 0.6 0.4
0.2 1.2 0.7 1.3 0.1 l.l 1.4 2.4 0.2
<0.06 0.8 0.7 1.5 <0.04 0.6 <0.675 0.4 0.2
0.4 l.l 1.4 1.0 0.2 l.l 0.675 1.6 <O.l
0.4 0.5 <0.675 0.4 0.2 1.0 0.675 2.2 <0.08
0.3 0.4 <0.675 0.3 0.2 0.8 0.675 1.0 0.10
S.01 S-02 S-t3
Ra-226 U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb-210 Tb-232 Ra-226 U-Nat Pb-210 Tlt-232
0.3 0.20 l.l 0.3 0.60 0.54 0.50 0.60 0.3 0.34 l.l <0.06
0.4 0.14 0.3 <0.08 0.20 0.05 0.70 0.20 0.2 0.07 0.8 0.3
0.7 <0.675 1.0 0.4 0.8 1.4 0.8 0.6 0.4 <0.675 1.0 <0.07
0.1 <0.675 0.8 <0.02 0.2 <0.675 l.l <0.05 0.3 <0.675 1.8 <0.03
0.2 <0.675 <0.2 <0.03 0.4 <0.675 <0.2 <0.06 0.3 <0.675 <0.2 0.005
0.2 <0.675 <0.05 <0.05 0.2 <0.675 0.5 <0.05 0.3 <0.675 0.5 <0.03
0.2 <0.675 0.90 <0.09 0.2 <0.675 0.3 <0.09 0.3 <0.675 0.7 <0.03
0.1 <0.675 <0.3 <0.05 0.2 <0.675 0.5 <0.07 0.3 <0.675 0.5 0.20
.E-,01 E-92 E-&3
Sample
elate Ra-226 U-Nat Pb-2UI Th-232 Ra-226 U-Nat Pb-2UJ Th-232 Ra-226 U-Nat Pb-210 Th-232 Ra-22'
Aug-15 2.60 3.11 2.40 0.2 1.30 1.69 1.00 0.2 1.20 2.70 0.7 0.3 0.9
Aug-16 1.40 0.61 0.50 0.3 1.70 0.47 0.40 0.2 1.60 0.61 0.3 0.3 1.3
Aug-17 3.2 2.70 2.7 0.3 1.9 2.03 1.6 0.2 1.6 1.35 1.6 0.2 1.5
Aug-18 2.2 2.70 4.1 <0.1 1.4 1.35 1.7 0.1 1.3 1.35 1.4 0.2 1.7
Aug-19 1.5 2.03 1.5 <0.1 0.7 0.675 0.6 0.3 2.2 2.03 2.0 0.3 1.5
Aug-20 3.6 2.70 2.5 0.2 1.2 0.675 1.1 0.1 4.4 4.05 3.2 0.2 1.8
Aug-21 2.7 1.35 2.8 0.1 1.5 0.675 2.1 0.2 4.8 10.13 5 0.2 2.9
Aug-22 3.2 2.70 2.3 <0.03 1.1 1.35 1.1 <0.02 2.1 4.05 2.1 <0.06 2.2
< indicates the value reported by the laboratory. Negative values are reported as the MDC.
Table 1-2
WHITE MESA MILL
Soil Sampling Results in the Four Cardinal Directions
(pCi/g}
E-04 E-05 £..06
U-Nat Pb-210 n . .----226 U-Nat Pb-210 Tk-232 Ra-226 U-Nat Pb-210
1.69 0.7 0.2 4.9 9.11 3.70 0.2 2.6 3.11 2.10
0.74 0.4 0.2 4.0 2.16 0.3 0.3 4.0 2.90 0.4
2.03 1.5 <0.07 2.3 2.70 2.3 0.3 3.0 2.70 2.4
2.03 2.0 0.1 3.0 4.73 4.0 0.1 3.3 4.05 3.0
2.03 1.6 0.2 1.4 2.03 2.0 0.2 2.2 4.05 2.2
2.03 1.5 <0.09 4.2 4.73 3.4 0.2 2.3 2.70 1.8
2.70 2.9 0.2 5.4 5.4 5.6 <0.2 2.9 2.7 3.3
2.70 1.7 0.2 4.3 4.05 3.8 0.1 3.3 3.38 1.9
Tb-23l
0.2
0.2
<0.1
<0.08
0.1
0.2
0.1
0.1
E-01 E-08 ·E-f)!)
lla-226 U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb--210 Tb-232 Ra-226 .U-Nat Pb-210 Th-232
0.5 0.74 0.3 <0.1 3.5 4.79 3.2 0.2 2.0 3.51 2.1 0.2
1.2 0.34 <0.06 <0.08 3.5 1.62 0.5 0.2 2.5 1.35 0.3 0.2
2.7 2.03 2.9 <0.1 4.7 4.05 2.7 <0.09 4.4 3.38 2.4 1.3
0.4 0.68 0.4 <0.1 3.3 4.05 4.7 0.2 0.7 2.03 0.8 0.1
3.1 5.40 2.9 0.2 4.8 4.05 5.3 0.2 1.5 1.35 1.9 0.2
2.0 2.03 1.6 <0.1 3.3 4.05 3.0 0.3 3.9 3.38 3.7 0.1
0.8 1.35 0.9 <0.1 6.3 6.075 7.0 <0.1 2.4 2.7 3.2 <0.1
1.1 1.35 0.7 <0.02 3.8 5.40 2.5 <0.05 1.6 2.03 1.4 <0.05
E-10 E-11 E-12
Ra-226 U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb-210 Tb-232 Ra-126
1.8 3.51 2.8 0.4 1.3 2.09 1.6 <0.l 0.6 0.74 0.6 0.2 0.6
2.0 1.08 0.4 0.3 0.8 0.41 0.2 0.2 0.5 0.07 0.5 0.3 1.0
3.0 3.38 2.2 0.3 1.9 1.35 1.4 0.2 1.7 <0.675 1.0 0.4 1.9
0.8 1.35 1.0 <0.08 1.3 2.03 2.0 0.2 0.6 <0.675 0.8 <0.07 0.9
0.6 1.35 0.7 0.3 1.3 1.35 1.8 0.2 1.5 0.68 1.2 0.2 1.5
1.4 2.70 1.4 0.3 1.4 1.35 1.9 0.2 0.6 <0.675 0.8 <0.l 1.3
2.1 2.03 3.2 <0.l 1.0 1.35 1.9 0.2 0.6 <0.675 l <0.04 0.6
2.1 2.03 1.9 0.2 0.8 1.35 0.9 0.2 0.6 <0.675 0.5 0.2 0.7
< indicates the value reported by the laboratory. Negative values are reported as the MDC.
Table 1-2
WHITE MESA MILL
Soil Sampling Results in the Four Cardinal Directions
(pCi/g)
E-13 E-14 E-15
U-Nat Pb-216 Th-232 Ra-226 U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb-210
0.41 0.7 0.2 0.4 0.54 I.I 0.2 0.4 0.47 I.I
0.07 <0.2 <0.l 0.4 0.07 <0.08 0.2 0.4 0.07 I.I
<0.675 1.7 0.1 1.9 <0.675 I.I 0.5 1.6 <0.675 1.5
<0.675 1.9 0.1 0.4 <0.675 1.2 0.4 0.4 <0.675 1.9
1.35 2.2 <0.l 0.5 <0.675 1.8 0.2 0.7 <0.675 1.9
<0.675 2.1 0.2 0.7 <0.675 0.9 0.4 0.5 <0.675 1.2
<0.675 1.2 0.2 0.5 <0.675 1.1 0.3 0.5 <0.675 0.8
<0.675 0.8 <0.09 0.4 <0.675 <0.2 0.2 0.5 <0.675 <0.2
Th-232
0.2
0.2
0.3
0.3
0.2
<0.03
0.2
<0.09
&-16 ~17 E-18
Ra-226 U-Nat. Pb-210 Th-232 Ra-226 U-Nat Pb-210 Tb-232 Ra-226 U-Nat Pb-210 Tlt-232
0.5 0.34 0.8 0.3 0.5 0.41 1.3 0.3 0.6 0.34 0.9 0.3
0.4 0.20 0.7 0.3 0.3 0.07 0.7 0.2 0.3 0.14 0.4 0.2
1.4 <0.675 0.9 0.5 0.8 <0.675 1.1 0.2 0.7 <0.675 0.8 0.2
0.4 <0.675 I.I <0.02 0.2 <0.675 0.5 <0.08 0.3 <0.675 0.8 <0.05
0.4 <0.675 0.9 0.2 0.3 <0.675 0.4 <0.02 0.3 <0.675 <0.01 0.1
0.5 <0.675 0.4 0.1 0.3 <0.675 1.6 0.1 0.5 <0.675 <0.2 0.2
0.4 <0.675 0.7 0.3 0.3 <0.675 1.3 <0.02 0.4 <0.675 0.6 <0.02
0.4 <0.675 0.4 0.2 0.3 <0.675 0.8 <0.07 0.3 <0.675 <0.2 <0.08
Table 1-2
WHITE MESA MILL
Soil Sampling Results in the Four Cardinal Directions
(pCi/g)
Sample W-01 W.:oz-----~· --------W:03 W-94 -\\'-OS W-07
date Ra-226 tJ..Nat Pb-HJ Th-232· -226 U-Nat J'b-210 Th-232 . -226 U..Nat Jlb-21 -226 U-Nat Pb-110 Th-232
Aug-15 I 0.5 I 0.41 I 0.2 I 0.3 I 0.6 I o.68 I 0.6 I 0.2 I 0.9 I 0.81 I 1.3 I 0.2 I 0.9 I 1.08 I 1.0 I 0.3 I 0.5 I 0.81 I 0.8 I 0.4 I 0.4 I o.34 I 0.5 I 0.3 I 0.4 I 0.34 I 0.6 I 0.2 I 0.4 I 0.61 I 0.9 I 0.2 I 0.2 I 0.41 I 0.7 I <0.09
Aug-I 6 I 0.6 I 0.20 I o.6 I 0.5 I 1.0 I 0.20 I 0.8 I 0.3 I o.8 I 0.27 I 1.1 I 0.2 I 0.6 I 0.27 I 2.0 I 0.2 I 0.4 I 0.20 I 2.5 I 0.5 I 0.4 I 0.07 I 0.8 I 0.1 I 0.3 I o.07 I 1.6 I 0.3 I 0.4 I 0.14 I 1.5 I 0.2 I 0.2 I 0.05 I 1.2 I <0.2
Aug-17 I 0.6 l<0.6751 1.1 I 0.1 I 0.6 l<0.6751 0.9 I <0.I I 0.7 I o.675 I 1.1 I 0.2 I o.9 I o.675 I 1.6 I <0.08 I o.4 l<0.6751 0.9 I <O.I I o.3 l<0.6751 o.9 I <0.08 I o.4 l<0.6751 0.7 I 0.4 I o.3 l<0.6751 0.8 I 0.2 I 0.3 l<0.6751 0.9 I <0.03
Aug-18 I 0.7 I <0.6751 0.6 I 0.3 I 0.6 l<0.6751 0.4 I 0.2 I 1.0 I 0.675 I 1.7 I 0.4 I 1.8 I 1.35 I 3.5 I 0.2 I 0.3 l<0.6751 o. 7 I 0.2 I 0.3 l<0.6751 0.6 I 0.2 I 0.4 l<0.6751 0.6 I 0.1 I 0.3 l<0.6751 0.6 I <0. I I 0.2 I <0.6751 0.9 I <0.02
Aug-I 9 I 0.5 I <0.6751 0.3 I 0.3 I 0.4 l<0.6751 <0.04 I 0.2 I 0.8 I 0.68 I 0.5 I 0.2 I 0.9 I o.68 I 0.2 I 0.4 I 0.3 l<0.6751 0.7 I 0.1 I o.5 l<0.6751 0.7 I 0.2 I 0.4 l<0.6751 0.9 I 0.4 I 0.3 l<0.6751 1.0 I 0.1 I 0.4 I <0.6751 1.8 I <0.08
Aug-20 I o.5 I <0.6751 o.6 I o.3 I 1.1 I 0.68 I 0.9 I 0.1 I 1.0 I <0.675 I 0.9 I 0.2 I 2.3 I 1.35 I 3.0 I 0.2 I 0.6 l<0.6751 0.7 I 0.3 I 0.3 l<0.6751 0.7 I 0.2 I 0.3 l<0.6751 o.5 I 0.1 I 0.2 l<0.6751 0.5 I <0.01 I 0.3 I <0.6751 0.3 I <0.03
Aug-21 I o. 7 I <0.6751 0.6 I 0.3 I 1 l<0.6751 1.6 I 0.2 I 0.9 I <0.675 I 1.1 I 0.3 I 0.9 I 0.675 I 1.4 I 0.2 I 0.8 l<0.6751 1.1 I 0.2 I 0.4 l<0.6751 0.8 I <0.1 I 0.4 l<0.6751 1.2 I <0.1 I 0.4 l<0.6751 1.1 I 0.2 I 0.4 I <0.6751 0.6 I <0.05
Aug_-221 0.6 l<0.6751 <0.3 I o.5 I o.9 I o.675 I 0.8 I 0.3 I 0.7 I 0.675 I 0.8 I 0.3 I 0.8 I 0.675 I 0.9 I 0.2 I 0.6 l<0.6751 <0.01 I <0.04 I 0.2 l<0.6751 <0.3 I <0.06 I 0.4 l<0.6751 1.3 I 0.1 I 0.3 l<0.6751 1.1 I 0.1 I 0.3 l<0.6751 0.9 I <0.09
< indicates the value reported by the laboratory. Negative values are reported as the MDC.
•
W-U) W-11 W-12
Ra-226 U-Nat Pb-2H n-2J2 Ra-126 U-Nat Pb-210 Tft-232 Ra-226 U-Nat Pb-210 Th-232 Ra-226
0.4 0.34 0.3 0.3 0.5 0.20 0.5 0.4 0.2 0.14 I.I <0.1 0.4
0.4 0.07 0.4 0.4 0.3 0.14 0.3 0.2 0.2 0.05 0.7 <0.09 0.3
0.3 <0.675 0.4 0.1 0.3 <0.675 I.I <O.l 0.2 <0.675 0.6 <0.05 0.4
0.3 <0.675 0.4 <0.09 0.4 <0.675 0.9 <0.l 0.1 <0.675 0.9 0.1 0.2
0.4 <0.675 0.3 0.2 0.5 <0.675 0.5 0.2 0.2 <0.675 0.5 <0.03 0.4
0.4 <0.675 0.3 <0.06 0.3 <0.675 0.4 0.09 0.3 <0.675 0.5 <0.05 0.4
0.5 <0.675 0.4 0.3 0.3 <0.675 0.8 <0.l 0.2 <0.675 0.7 <0.02 0.3
0.4 <0.675 <0.3 0.2 0.2 <0.675 0.9 0.2 0.2 <0.675 0.9 <0.01 0.2
< indicates the value reported by the laboratory. Negative values are reported as the MDC.
Table 1-2
WHITE MESA MILL
Soil Sampling Results in the Four Cardinal Directions
(pCi/g)
W-13 W-14 W-15
U-Nat Pb-210 Tb-232 Ra-226 U-Nat Pb-2H) 1'11-232 Ra-226 U-Nat Pb-210
0.27 l.2 0.2 0.4 0.27 I.I <0.2 0.4 0.34 0.6
0.14 0.5 <0.1 <0.002 0.27 0.4 0.4 0.2 0.27 0.3
<0.675 0.6 0.3 0.2 <0.675 0.7 <0.l 0.3 <0.675 l.3
<0.675 0.7 <0.09 0.2 <0.675 0.8 <0.07 0.3 <0.675 l.7
<0.675 0.5 <0.09 0.2 <0.675 0.4 <0.01 0.5 <0.675 I.I
<0.675 0.9 <0.05 0.4 <0.675 0.9 0.2 0.6 <0.675 l.4
<0.675 0.6 <0.06 0.3 <0.675 0.9 0.1 0.6 <0.675 l
<0.675 0.5 <0.08 0.3 <0.675 l.0 0.1 0.6 <0.675 l.7
Th-232
0.2
0.0
0.1
<0.l
0.2
0.1
0.3
0.2
W-16 W-17 W-18
Ra-226 U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb-210 Th-232 Ra-226 U-Nat Pb-210 n-2J2
0.6 0.34 0.7 0.4 0.5 0.34 l.2 0.4 0.5 0.34 0.9 0.2
0.3 0.41 0.3 0.0 0.4 0.34 0.6 0.2 0.5 0.34 0.8 0.5
0.4 <0.675 l.2 0.4 0.5 <0.675 0.5 0.3 0.5 <0.675 l.2 0.2
0.3 <0.675 I.I <0.l 0.3 <0.675 l.2 <0.02 0.3 <0.675 0.7 <0.02
0.5 <0.675 l.3 0.3 0.5 <0.675 0.5 0.1 0.6 <0.675 0.5 0.2
0.5 <0.675 0.8 0.3 0.5 <0.675 l.2 0.2 0.6 <0.675 l.8 0.2
0.3 <0.675 0.7 0.4 0.4 <0.675 l.0 0.2 0.3 <0.675 0.9 <0.08
0.4 <0.675 0.8 0.1 0.3 <0.675 l.0 <0.01 0.3 <0.675 0.9 0.2