Some Useful Information Concerning the results:
The Conversion factors for the primordial nuclides are given by: 1 Bq 238U/kg = 81 ppb U (81 x 10-9 gU/g) The 238U decay chain gammas used are: 226Ra: 186.1 keV
214Pb: 295.21 and 351.92 keV
214Bi: 609.31, 1120.29, 1764.49 and 2204.21 keV
The relationships are valid for any daughters in the 238U, 235U or 232Th chain only if the chain is in equilibrium. 1 Bq 232Th/kg = 246 ppb Th (246 x 10-9 gTh/g) The 232Th decay chain gammas used are: 212Pb: 238.63 and 300.09 keV
208Tl: 583.19 and 2614.53 keV,
228Ac: 911.21 keV
1 Bq 40K/kg = 32300 ppb K (32300 x 10-6 gK/g) The 40K decay chain gamma used is: 40K: 1460.83 keV
1 Bq 235U/kg = 1.76 ppm U (1.76 x 10-6 gU/g) The 235U decay chain gammas used are: 235U: 143.76, 163.33 and 205.31 keV

The measurements of the samples below take into account the background measurement. If a measurement is below the background then the upper bound shown is the 90% confidence limit.
SNOLAB Measurements:



























Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 1 Enviro-Epoxy Products, Inc 1256.7 2.266 Apr 21, 2006 (mBq/kg) 324.48 +/- 14.76 305.45 +/- 235.17


231.78 +/- 12.75 77440.76 +/- 3994.99 <5.33

4.66 +/- 6.87


Canadian Coatings EP100 Epoxy 23-50 Thornmount Drive, Toronto

Apr 25, 2006 (ppb) 26.28 ppb +/- 1.20 ppb 24.74 ppb +/- 19.05 ppb


57.02 ppb +/- 3.14 ppb 2501.34 ppm +/- 129.04 ppm








SNOLAB 2 International Paint Inc. 1477.5 1.620 Apr 25, 2006 (mBq/kg) 1089.4 +- 31.53 800.53 +/- 199.48 83.15 +/- 42.33 312.2 +/- 13.93 8276.48 +/- 471.07 N/A

N/A




Interzone 954 (White) 6001 Antoine Drive, Houston, Texas 77091

Apr 28, 2006 (ppb) 88.24 ppb +/- 2.55 ppb 64.84 ppb +/- 16.16 ppb 146.34 ppb +/- 74.51 ppb 76.80 ppb +/- 3.43 ppb 267.33 ppm +/- 15.22 ppm








SNOLAB 3 International Paint Inc. 1450.0 2.134 Apr 28, 2006 (mBq/kg) 1187.49 +/- 32.00 739.57 +/- 173.6 31.91 +/- 36.34 254.14 +/- 11.53 8842.76 +/- 489.66 N/A

N/A




Interzone 954 (No Tint) 6001 Antoine Drive, Houston, Texas 77091

May 1, 2006 (ppb) 96.19 ppb +/- 2.59 ppb 59.91 ppb +/- 14.06 ppb 56.16 ppb +/- 63.97 ppb 62.52 ppb +/- 2.84 ppb 285.62 ppm +/- 15.82 ppm








SNOLAB 4 International Paint Inc. 1550.0 1.073 May 1, 2006 (mBq/kg) 1949.49 +/- 53.92 1788.09 +/- 349.4


329.92 +/- 17.47 15145.48 +/- 842.97 N/A

N/A




Interzone 670HS (no tint) 6001 Antoine Drive, Houston, Texas 77091

May 3, 2006 (ppb) 157.91 ppb +/- 4.37 ppb 144.84 ppb +/- 28.30 ppb


81.16 ppb +/- 4.30 ppb 489.20 ppm +/- 27.23 ppm








SNOLAB 5 Benjamin Moore + Co. 1400.0 3.154 May 3, 2006 (mBq/kg) 1579.85 +/- 39.16 1647.52 +/- 218.07


1015.9 +/- 29.82 2288.47 +/- 144.32 N/A

N/A




Moore Ind. Maintenance Epoxy Mastic Coating 139 Mulock Avenue, Toronto

May 8, 2006 (ppb) 127.97 ppb +/- 3.17 ppb 133.45 ppb +/- 17.66 ppb


249.91 ppb +/- 7.34 ppb 73.92 ppm +/- 4.66 ppm








SNOLAB 6 Benjamin Moore + Co. 1335.7 1.569 May 15, 2006 (mBq/kg) 766.96 +/- 24.22 630.24 +/- 196.03


251.32 +/- 12.53 5455.34 +/- 331.22 1.50 +/- 4.12 1.32 +/- 2.73


Moore Industrial Maintenance Polymide Epoxy Gloss Coating 139 Mulock Avenue, Toronto

May 19, 2006 (ppb) 62.12 ppb +/- 1.96 ppb 51.05 ppb +/- 15.88 ppb


61.83 ppb +/- 3.08 ppb 176.21 ppm +/- 10.70 ppm








SNOLAB 7 Benjamin Moore + Co. 996.9 1.771 May 8, 2006 (mBq/kg) 749.2 +/- 24.67 531.63 +/- 176.31


95.26 +/- 8.50 3367.24 +/- 232.33 N/A

N/A




BM36-90 Polymide Epoxy Clear Sealer-Finisher 139 Mulock Avenue, Toronto

May 15, 2006 (ppb) 60.69 ppb +/- 2.00 ppb 43.06 ppb +/- 14.28 ppb


23.43 ppb +/- 2.09 ppb 108.76 ppm +/- 7.50 ppm








SNOLAB 8 White 1330.5 10.155 Feb 23, 2007 (mBq/kg) 4522.59 +/- 98.33 3728.11 +/- 281.68 251.83 +/- 37.43 496.31 +/- 14.63 39202.78 +/- 2010.45 N/A

0.76 +/- 2.78


Elastomeric Paint 55-01 (1L) Benjamin Moore + Co.

Mar 6, 2007 (ppb) 366.33 ppb +/- 7.96 ppb 301.98 ppb +/- 22.82 ppb 443.23 ppb +/- 65.88 ppb 122.09 ppb +/- 3.60 ppb 1266.25 ppm +/- 64.94 ppm








SNOLAB 9 Static dissipative floor finish 797.3 6.226 Mar 6, 2007 (mBq/kg) 25.21 +/- 2.94





1.88 +/- 2.09 13385.93 +/- 706.52 1.88 +/- 2.27 <1.46


Staticide Gold ACL Staticide, Elk Grove Village, IL

Mar 19, 2007 (ppb) 2.04 ppb +/- 0.24 ppb





0.46 ppb +/- 0.51 ppb 432.36 ppm +/- 22.82 ppm








SNOLAB 10 Grey Tinted 1307.8 7.066 Apr 4, 2007 (mBq/kg) 4571.23 +/- 100.31 3380.54 +/- 298.34 242.07 +/- 45.82 517.11 +/- 15.94 38973.7 +/- 2002.60 N/A

<1.01




Elastomeric Paint 55-01 (1L) Benjamin Moore + Co.

Apr 12, 2007 (ppb) 370.27 ppb +/- 8.13 ppb 273.82 ppb +/- 24.17 ppb 426.05 ppb +/- 80.65 ppb 127.21 ppb +/- 3.92 ppb 1258.85 ppm +/- 64.68 ppm









Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 11 Dexpan Type II 1580.0 g 0.152 Jan 25, 2010 (mBq/kg) 12912.05 +/- 355.48 9612.92 +- 2162.29 569.8 +- 54.49 6520.29 +/- 185.66 16802.09 +/- 1283.80 <51.46

7.93 +- 32.63
Dexpan


Jan 25, 2010 (ppb) 1045.88 ppb +/- 28.79 ppb 778.65 ppb +- 175.15 ppb 1002.84 ppb +- 95.90 ppb 1603.99 ppb +/- 45.67 ppb 542.71 ppm +/- 41.47 ppm








SNOLAB 12 Canberra 1017.8 g 12.777 Jul 9, 2010 (mBq/kg) <0.21

<11.69

<0.79

<0.18

3.44 +- 6.26 0.49 +- 0.62 <0.18


Ultra Low Background Aluminium Cylinder 40 mm Tall, 100 mm diameter

Jul 22, 2010 (ppb or ppm) <0.017 ppb

<0.95 ppb

<1.39 ppb

<0.044 ppb

111.07 ppb +- 202.14 ppb








SNOLAB 13 Canberra 50.291 g 16.956 Jul 22, 2010 (mBq/kg) <0.50

113.04 +- 127.98 0.87 +- 5.84 <0.925

<14.24

<1.24

<0.13


Ultra Low Background Insulators 12 samples, each is 2 mm thick and 25.4 mm diameter

Aug 9, 2010 (ppb or ppm) <0.040 ppb

9.156 ppb +- 10.37 ppb 1.54 ppb +- 10.28 ppb <0.228 ppb

<459.93 ppb










SNOLAB 14 Sample of Lead Bricks used For the Shielding of the SNOLAB HPGe Detector 24.10 kg 14.687 Sep 1, 2010 (mBq/kg) 0.18 +- 0.12 <2.20

1.67 +- 2.26 0.19 +- 0.09 2.05 +- 0.69 0.45 +- 0.15 0.011 +- 0.018 210Po:
Lead Bricks


Sep 16, 2010 (ppb or ppm) 0.014 ppb +- 0.010 ppb <0.1 8 ppb

2.93 ppb +- 3.98 ppb 0.047 ppb +- 0.021 ppb 66.21 ppb +- 22.35 ppb





53.4 Bq/kg +- 10.6 Bq/kg
SNOLAB 15 Sample of Ni Powder from Vale Refinery in Copper Cliff 2929.7 g 6.844 Dec 22, 2010 (mBq/kg) 0.65 +- 0.34 ppb 3.07 +- 14.74 <0.33

0.31 +- 0.27 8.43 +- 3.41 0.17 +- 0.27 0.06 +- 0.13
Nickel Powder


Dec 29, 2010 (ppb or ppm) 0.053 ppb +- 0.027 ppb 0.25 ppb +- 1.19 ppb <0.58 ppb

0.077 ppb +- 0.066 ppb 272.29 ppb +- 110.24 ppb










Additional Activities:

7Be: 5.05 mBq/kg +- 0.65 mBq/kg

54Mn: 0.65 mBq/kg +- 0.21 mBq/kg
58Co: 5.05 mBq/kg +- 0.65 mBq/kg





SNOLAB 16 Sample of Lead Bricks used For the Shielding of the SNOLAB HPGe Detector 29.73 kg 6.892 Oct 27, 2010 (mBq/kg) 0.41 +- 0.17 <4.49

2.50 +- 4.48 0.08 +- 0.08 2.97 +- 1.00 0.407 +- 0.225 <0.006

210Po:
Lead Bricks II


Nov 3, 2010 (ppb or ppm) 0.033 ppb +- 0.014 ppb <0.36 ppb

4.40 ppb +- 7.89 ppb 0.018 ppb +- 0.020 ppb 96.04 ppb +- 32.37 ppb





93.3 Bq/kg +- 19.0 Bq/kg
SNOLAB 17 Sample from Canberra 1591.6 g 9.770 Nov 12, 2010 (mBq/kg) 0.13 +- 0.28


0.18 +- 0.37 <0.13

<0.56

0.126 +- 0.281 <0.023

58Co:
Copper Sample


Nov 22, 2010 (ppb or ppm) 0.010 ppb +- 0.023 ppb


0.32 ppb +- 0.65 ppb <0.032 ppb

<18.20 ppb







1.32 mBq/kg +- 0.25 mBg/kg
SNOLAB 18 Sample from Canberra 159.4 g 12.895 Dec 29, 2010 (mBq/kg) <0.26

<24.58

<2.31

<1.83

<0.76

1.88 +- 1.88 <0.17

210Po:
Lead Sample


Jan 11, 2011 (ppb or ppm) <0.021 ppb

<1.99 ppb

<4.07 ppb

<0.45 ppb

<24.40 ppb







<19.39 Bq/kg

SNOLAB 19 Sample of Lead Bricks used For the Shielding of the SNOLAB HPGe Detector 29.73 kg 7.894 Nov 29, 2010 (mBq/kg) 0.28 +- 0.18 <6.792

2.44 +- 4.34 <0.065

1.88 +- 0.79 0.21 +- 0.21 <0.013

210Po:
Lead Bricks III (same bricks as II) These bricks were etched with nitric acid

Dec 7, 2010 (ppb or ppm) 0.023 ppb +- 0.015 ppb <0.550 ppb

4.30 ppb +- 7.64 ppb <0.016 ppb

60.73 ppb +- 25.34 ppb





47.4 Bq/kg +- 14.2 Bq/kg
SNOLAB 20 Sample collected by Eric V-J 856.9 g 1.005 Apr 5, 2011 (mBq/kg) 32.77 +- 6.21 124.05 +- 124.40 <0.55

101.40 +- 10.63 41.31 +- 32.44 10.97 +- 4.08
N/A

Rainwater/Snow collected at Lively 04/04/11

Apr 6, 2011 (ppb or ppm) 2.65 ppb +- 0.50 ppb 10.05 ppb +- 10.08 ppb <0.96 ppb

24.94 ppb +- 2.61 ppb 1334.37 ppb +- 1047.89 ppb









Additional Activities:
(mBq/kg)

134Cs: 8.33 +- 2.39

7Be: 1901.62 +- 180.42

131I: 593.33 +- 39.09

228Ac: <5.01


(ppb or ppm)




















<1.23 ppb


Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 21 Sample collected by Eric V-J 952.7 g 2.006 Apr 6, 2011 (mBq/kg) 26.11 +- 3.14 83.87 +- 84.08 0.47 +- 1.86 2.40 +- 1.67 25.93 +- 17.74 <0.44

<0.089


Ice from Meatbird Lake, Lively 04/04/11

Apr 8, 2011 (ppb or ppm) 2.12 ppb +- 0.25 ppb 6.79 ppb +- 6.81 ppb 0.83 ppb +- 3.27 ppb 0.59 ppb +- 0.41 ppb 837.42 ppb +- 572.97 ppb









Additional Activities:
(mBq/kg)

134Cs: 0.43 +- 0.80

7Be: 79.67 +- 18.26

131I: 17.78 +- 2.88






(ppb or ppm)























SNOLAB 22 Sample collected by Eric V-J 935.4 g 1.013 Apr 19, 2011 (mBq/kg) 9.94 +- 4.82
N/A
3.86 +- 3.97 9.37 +- 2.92 38.96 +- 28.44 22.66 +- 4.92 3.02 +- 1.49
Rainwater collected at Lively 16/04/11

Apr 20, 2011 (ppb or ppm) 0.81 ppb +- 0.39 ppb


6.79 ppb +- 7.00 ppb 2.31 ppb +- 0.72 ppb 1.58 ppm +- 0.92 ppm









Additional Activities:
(mBq/kg)

134Cs: 16.75 +- 2.94

7Be: 834.62 +- 94.72

131I: 50.34 +- 7.02






(ppb or ppm)























SNOLAB 23 Sample collected by Eric V-J 1015.1 g 0.894 May 3, 2011 (mBq/kg) <4.81

117.82 +- 118.21 <1.02

5.94 +- 2.70 29.55 +- 28.27 19.11 +- 4.73 <0.46


Rainwater collected at Lively 20/04/11

May 4, 2011 (ppb or ppm) <0.39 ppb

9.54 ppb +- 09.58 ppb <1.80 ppb

1.46 ppb +- 0.66 ppb 954.59 ppb +- 913.22 ppb









Additional Activities:
(mBq/kg)

134Cs: 13.06 +- 2.49

7Be: 768.89 +- 89.75

131I: 10.35 +- 3.51






(ppb or ppm)























SNOLAB 24 Sample collected by Eric V-J 1002.3 g 1.001 May 4, 2011 (mBq/kg) 3.29 +- 2.61
N/A
<2.71

<0.26

3.09 +- 15.37 0.90 +- 1.70 <0.20


Rainwater collected at Lively 26/04/11

May 5, 2011 (ppb or ppm) 0.27 ppb +- 0.21 ppb


<4.77 ppb

<0.064 ppb

99.90 ppb +- 496.28 ppb









Additional Activities:
(mBq/kg)

134Cs: 0.68 +- 0.71

7Be: 2686.92 +- 234.86

131I: 1.23 +- 2.29






(ppb or ppm)























SNOLAB 25
142.4 g 0.885 May 5, 2011 (mBq/kg) 10300.68 +- 469.97 20929.78 +- 20015.45 321.47 +- 67.47 25873.84 +- 811.23 1435374.30 +- 109241.57 <150.26

<161.59


Vermiculite


May 6, 2011 (ppb or ppm) 834.36 ppb +- 38.07 ppb 1695.31 ppb +- 1621.25 ppb 565.78 ppb +- 118.74 ppb 6364.97 ppb +- 199.56 ppb 46362.59 ppm +- 3528.50 ppm








SNOLAB 26 Sample of Pb bricks for new Canberra Ge detector 29.5837 kg 13.421 Dec 31, 2012 (mBq/kg) <0.043

0.380 +- 1.619 1.145 +- 0.861 <0.027

<0.192

<0.035

<0.010

210Po:
Plombum Lead


Jan 14, 2013 (ppb or ppm) <0.0034 ppb

0.031 ppb +- 0.131 ppb 2.016 ppb +- 1.516 ppb <0.0067 ppb

<6.189 ppb







5.06 Bq/kg +- 3.70 Bq/kg
SNOLAB 27 Biodex Medical Systems Inc. 1048.0 g 6.369 Oct 29, 2012 (mBq/kg) 0.61 +- 0.67 8.40 +- 34.54 <0.13

<0.76

6.11 +- 6.87 <0.64

0.05 +- 0.20
RadiacWash


Nov 5, 2012 (ppb or ppm) 0.049 ppb +- 0.054 ppb 0.68 ppb +- 2.80 ppb <0.22 ppb

<0.19 ppb

197.25 ppb +- 221.91 ppb








SNOLAB 28 Canberra 802.4 g 6.916 Mar 26, 2012 (mBq/kg) <0.094

0.00 +- 29.66 2.01 +- 1.34 <0.78

<2.64

0.25 +- 0.87 <0.22


Aluminium


Apr 2, 2012 (ppb or ppm) <0.008 ppb

0.00 ppb +- 2.40 ppb 3.54 ppb +- 2.36 ppb <0.19 ppb

<85.14 ppb










SNOLAB 29 Canberra 117.0 g 5.879 Apr 10, 2012 (mBq/kg) <0.85

134.37 +- 115.22 <5.19

1.98 +- 2.83 36.75 +- 33.33 0.86 +- 2.56 <0.27


Lead Foil


Apr 16, 2012 (ppb or ppm) <0.069 ppb

10.88 ppb +- 9.33 ppb <9.14 ppb

0.49 ppb +- 0.70 ppb 1.19 ppm +- 1.08 ppm








SNOLAB 30 Canberra 14.4 g 7.854 Apr 2, 2012 (mBq/kg) <9.56

483.57 +- 350.50 29.96 +- 20.43 30.53 +- 17.56 <19.22

27.78 +- 20.83 0.00 +- 6.21
Boron Nitride


Apr 10, 2012 (ppb or ppm) <0.77 ppb

39.17 ppb +- 28.39 ppb 52.72 ppb +- 35.96 ppb 7.51 ppb +- 4.32 ppb <620.88 ppb











Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 31 Canberra 70.3 g 6.733 Apr 16, 2012 (mBq/kg) 2.64 +- 8.84 61.51 +- 201.55 8.93 +- 8.38 <3.63

106.69 +- 82.50 11.38 +- 7.11 <3.24


Coaxial Wire Wire ID: D RG316U M17/172-00001 Pilotex - France

Apr 23, 2012 (ppb or ppm) 0.21 ppb +- 0.72 ppb 4.98 ppb +- 16.33 ppb 15.71 ppb +- 14.75 ppb <0.89 ppb

3.45 ppm +- 2.67 ppm








SNOLAB 32 Canberra 72.2 g 6.928 Jun 11, 2012 (mBq/kg) <2.97

<39.06

5.88 +- 6.71 <3.25

8.31 +- 56.79 9.70 +- 5.54 <1.67


Brass Screws Screw 3x10

Jun 18, 2012 (ppb or ppm) <0.24 ppb

<3.16 ppb

10.35 ppb +- 11.82 ppb <0.80 ppb

0.27 ppm +- 1.83 ppm









Additional Activities:
(mBq/kg)

54Mn <0.39



58Co: 1.39 +- 1.39











(ppb or ppm)





















SNOLAB 33 Canberra 74.7 g 5.373 Jun 18, 2012 (mBq/kg) <2.20

124.36 +- 245.99 9.94 +- 7.87 <6.85

76.31 +- 68.27 8.03 +- 5.36 <1.79


Brass Screws Screw 3x16

Jun 25, 2012 (ppb or ppm) <0.18 ppb

10.07 ppb +- 19.93 ppb 17.49 ppb +- 13.86 ppb <1.69 ppb

2.47 ppm +- 2.21 ppm









Additional Activities:
(mBq/kg)

54Mn 1.34 +- 1.34

58Co: 4.02 +- 2.68











(ppb or ppm)





















SNOLAB 34 Canberra 243.6 g 5.931 May 22, 2012 (mBq/kg) <2.48

<14.59

<1.76

1.02 +- 1.69 20.12 +- 20.12 <1.70

<0.18


Brass Screws Screw 4x16

May 28, 2012 (ppb or ppm) <0.20 ppb

<1.18 ppb

<3.11 ppb

0.25 ppb +- 0.42 ppb 0.65 ppm +- 0.65 ppm









Additional Activities:
(mBq/kg)

54Mn 0.00 +- 0.82

58Co: 0.00 +- 0.82











(ppb or ppm)





















SNOLAB 35 Canberra 287.4 g 6.637 Apr 23, 2012 (mBq/kg) 0.64 +- 1.84 9.43 +- 39.41 0.17 +- 2.05 1.70 +- 1.33 2.44 +- 14.96 <1.44

<0.95


Brass Screws Screw 4x20

Apr 30, 2012 (ppb or ppm) 0.05 ppb +- 0.15 ppb 0.76 ppb +- 3.19 ppb 0.30 ppb +- 3.60 ppb 0.42 ppb +- 0.33 ppb 0.08 ppm +- 0.48 ppm









Additional Activities:
(mBq/kg)

54Mn 1.04 +- 0.70

58Co: 2.78 +- 1.04











(ppb or ppm)





















SNOLAB 36 Canberra 274.9 g 6.569 May 15, 2012 (mBq/kg) 0.97 +- 1.27 70.64 +- 45.99 0.53 +- 2.12 1.00 +- 1.26 <6.76

0.73 +- 1.46 <0.48


Brass Screws Screw 4x25

May 22, 2012 (ppb or ppm) 0.08 ppb +- 0.10 ppb 5.72 ppb +- 3.73 ppb 0.93 ppb +- 3.73 ppb 0.25 ppb +- 0.31 ppb <218.40 ppb











Additional Activities:
(mBq/kg)

54Mn 0.73 +- 0.73

58Co: 1.82 +- 1.09











(ppb or ppm)





















SNOLAB 37 Canberra 2.4 g 7.646 Jul 3, 2012 (mBq/kg) 69.30 +- 89.44 <1951.75

139.92 +- 162.03 345.30 +- 160.65 <633.50

41.67 +- 83.33 <31.11

228Ac Signal:
Solder 0.5 mm diameter

Jul 16, 2012 (ppb or ppm) 5.61 ppb +- 7.25 ppb <158.09 ppb

246.25 ppb +- 285.18 ppb 84.94 ppb +- 39.52 ppb <20.46 ppm







<153.12 mBq/kg or < 37.67 ppb
SNOLAB 38 Canberra 2.6 g 8.173 May 7, 2012 (mBq/kg) 111.83 +- 88.79 2076.92 +- 3269.23 <111.97

<38.08

115.39 +- 923.08 0.00 +- 60.15 0.00 +- 27.20
Solder 0.75 mm diameter

May 15, 2012 (ppb or ppm) 9.06 ppb +- 7.19 ppb 168.23 ppb +- 264.81 ppb <211.15 ppb

<9.39 ppb

3.73 ppm +- 29.82 ppm








SNOLAB 39
268.2 g 0.291 Apr 23, 2012 (mBq/kg) 7665.56 +- 347.69 7739.85 +- 2806.55 858.77 +- 143.64 8837.10 +- 335.33 122602.54 +- 9921.33 100.67 +- 77.55 <71.27


Lab Dirt


Apr 23, 2012 (ppb or ppm) 620.91 ppb +- 28.16 ppb 626.93 ppb +- 227.33 ppb 1511.44 ppb +- 252.80 ppb 2173.93 ppb +- 82.49 ppb 3960.06 ppm +- 320.46 ppm









Additional Activities:
(mBq/kg)

7Be: 758.02 +/- 546.98

54Mn: 203.58 +- 77.55











(ppb or ppm)




















SNOLAB 40 Fisher Scientific Silica S153-3 1290.0 g 0.961 Oct 15, 2012 (mBq/kg) 2456.15 +- 90.20 2237.91 +- 454.21 170.61 +- 17.06 1523.29 +- 51.22 3641.01 +- 336.20 <6.17

<6.67


Silica Lot No. 111211

Oct 16, 2012 (ppb or ppm) 198.95 ppb +- 7.31 ppb 181.27 ppb +- 36.79 ppb 300.28 ppb +- 30.03 ppb 374.73 ppb +- 12.60 ppb 117.60 ppm +- 10.86 ppm









Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 41 Material for Ge Detector cup 145.6 g 6.849 Aug 20, 2012 (mBq/kg) 1.45 +- 3.47 <112.61

<2.69

<2.52

<15.69

<5.28

<1.67

7Be Signal:
Magnesium


Aug 27, 2012 (ppb or ppm) 0.12 ppb +- 0.28 ppb <9.12 ppb

<4.73 ppb

<0.62 ppb

<506.73 ppb







32.97 mBq/kg +- 24.73 mBq/kg
SNOLAB 42 Kimberly Clark 170.1 g 6.832 Oct 22, 2012 (mBq/kg) 20.31 +- 5.11 0.00 +- 222.22 40.31 +- 7.34 40.76 +- 6.16 328.04 +- 76.43 <2.34

<0.52

54Mn Signal:
Kimwipes


Oct 29, 2012 (ppb or ppm) 1.65 ppb +- 0.41 ppb 0.00 ppb +- 18.00 ppb 70.95 ppb +- 12.92 ppb 10.03 ppb +- 1.52 ppb 10.60 ppm +- 2.47 ppm





6.47 mBq/kg +- 2.94 mBq/kg
SNOLAB 43 Nine sources made at Laurentian for well-detector calibration during 7-10 Jan 2013. 5.755 g 3.893 Jan 18, 2013 (mBq/kg) <16.59

<531.89

38.62 +- 85.38 72.22 +- 89.62 695.05 +- 1181.58 34.75 +- 104.26 <14.40


Wipes from U, Th & K Calibration Sources Three each made using IAEA materials RG-K, RG-Th, and RG-U.

Jan 22, 2013 (ppb or ppm) <1.34 ppb

<43.08 ppb

67.97 ppb +- 150.27 ppb 17.77 ppb +- 22.05 ppb 22.45 ppm +- 38.17 ppm








SNOLAB 44 Coax Detector Components (1A) 228.1 g 7.876 Jun 13, 2013 (mBq/kg) <1.01

<52.29

0.90 +- 2.59 <3.49

15.35 +- 28.07 <1.06

0.16 +- 1.05
New crystal holder Canberra

Jun 21, 2013 (ppb or ppm) <0.081 ppb

<4.24 ppb

1.59 ppb +- 4.55 ppb <0.86 ppb

495.83 ppb +- 906.67 ppb









Additional Activities:
(mBq/kg)





228Ac: 2.68 +- 3.84











(ppb or ppm)




(Not in Equilibrium with other Th daughters) 0.66 ppb +- 0.94 ppb









SNOLAB 45 Coax Detector Components (1B) 145.6 g 8.702 Jun 4 – 7, 2013 (mBq/kg) <5.08

5.82 +- 147.58 <5.04

<1.85

4.37 +- 50.62 <0.95

<0.59


Actual crystal holder Canberra (5)
Aug 28, 2013 – Sep 3, 2013 (ppb or ppm) <0.41 ppb

0.47 ppb +- 11.95 ppb <8.88 ppb

<0.46 ppb

0.14 ppm +- 1.63 ppm








SNOLAB 46 Coax Detector Components (2A & 9A) 139.1 g 5.851 Jun 7, 2013 (mBq/kg) 0.74 +- 3.72 20.48 +- 60.99 <4.32

0.08 +- 3.17 <50.01

5.76 +- 4.32 <0.88


New support tail end and fixing Canberra

Jun 13, 2013 (ppb or ppm) 0.06 ppb +- 0.30 ppb 1.66 ppb +- 4.94 ppb <7.60 ppb

0.02 ppb +- 0.78 ppb <1.62 ppm










SNOLAB 47 Coax Detector Components (2B & 9B) 143.6 g 3.908 May 30, 2013 (mBq/kg) 15.34 +- 9.39 4927.59 +- 548.34 302.80 +- 27.37 375.03 +- 21.26 21.59 +- 55.71 6.96 +- 7.66 <1.70


Actual support tail end and fixing Canberra (4)
Jun 3, 2013 (ppb or ppm) 1.24 ppb +- 0.76 ppb 399.14 ppb +- 44.42 ppb 532.94 ppb +- 48.18 ppb 92.26 ppb +- 5.23 ppb 697.28 ppb +- 1799.44 ppb








SNOLAB 48 Coax Detector Components (3) 12.4 g 5.907 May 1, 2013 (mBq/kg) <71.91

<1228.13

<11.67

<37.05

<159.19

48.39 +- 48.39 8.07 +- 22.81
Contact set Canberra (2)
May 8, 2013 (ppb or ppm) <5.83 ppb

<99.48 ppb

<20.54 ppb

<9.11 ppb

<5.14 ppm










SNOLAB 49 Coax Detector Components (4) 6.3 g 4.463 May 8, 2013 (mBq/kg) 44.66 +- 40.50 <693.93

<58.97

373.57 +- 67.83 <558.38

0.00 +- 47.62 <4.97


Brass Screws #1 Canberra (3)
May 13, 2013 (ppb or ppm) 3.62 ppb +- 3.28 ppb <56.21 ppb

<103.78 ppb

91.90 ppb +- 16.69 ppb <18.04 ppm










SNOLAB 50 Coax Detector Components (5) 17.6 g 6.864 May 23, 2013 (mBq/kg) <5.05

<95.77

8.24 +- 11.20 10.09 +- 14.50 <73.42

17.05 +- 11.36 <2.31


Brass Screws #2 Canberra

May 30, 2013 (ppb or ppm) <0.41 ppb

<7.76 ppb

14.51 ppb +- 19.72 ppb 2.48 ppb +- 3.57 ppb <2.37 ppb











Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 51 Coax Detector Components (11) 572.9 g 6.931 Jun 27, 2013 (mBq/kg) <0.98

<53.64

9.94 +- 8.48 <0.37

6.11 +- 9.43 <1.34

<0.39

210Po:
Lead Shield Canberra

Jul 4, 2013 (ppb or ppm) <0.080 ppb

<4.35 ppb

17.50 ppb +- 14.92 ppb <0.090 ppb

197.33 ppb +- 304.45 ppb





5.36 Bq/kg +- 36.30 Bq/kg
SNOLAB 52 Coax Detector Components (7) 12.3 g 6.261 Jul 11, 2013 (mBq/kg) <22.08

647.42 +- 394.05 27.16 +- 23.66 <27.05

130.08 +- 227.64 <4.59

4.06 +- 11.50
Sapphire (3 parts) Canberra

Jul 17, 2013 (ppb or ppm) <1.79 ppb

52.44 ppb +- 31.92 ppb 47.81 ppb +- 41.63 ppb <6.65 ppb

4.20 ppm +- 7.35 ppm








SNOLAB 53 Coax Detector Components (6) 14.9 g 21.777 Jul 25, 2013 (mBq/kg) <8.41

<119.24

<15.49

13.61 +- 8.33 93.96 +- 107.38 0.00 +- 6.71 <5.01

210Po:
Lead in Contact with the crystal (7 parts) Canberra

Aug 16, 2013 (ppb or ppm) <0.68 ppb

<9.66 ppb

<27.27 ppb

3.35 ppb +- 2.05 ppb 3.03 ppm +- 3.47 ppm





<76.02 Bq/kg

SNOLAB 54 Coax Detector Components (8 & 10) 81.9 g 5.659 Jun 21, 2013 (mBq/kg) 1.27 +- 7.21 135.12 +- 147.12 21.76 +- 8.34 6.67 +- 7.00 51.28 +- 84.25 <5.39

<2.54


Holding pot and other pieces made from PTFCE Canberra

Jun 27, 2013 (ppb or ppm) 0.11 ppb +- 0.58 ppb 10.95 ppb +- 11.92 ppb 38.30 ppb +- 14.68 ppb 1.64 ppb +- 1.72 ppb 1.66 ppm +- 2.72 ppm








SNOLAB 55 Coax Detector Components (12) 3.5 g 7.829 Apr 23, 2013 (mBq/kg) 319.00 +- 174.01 6002.62 +- 5162.03 <228.57

344.57 +- 139.69 28.57 +- 1657.14 28.57 +- 142.86 0.00 +- 60.61 7Be Signal:
FET Canberra (1)
May 1, 2013 (ppb or ppm) 25.84 ppb +- 14.10 ppb 486.21 ppb +- 418.12 ppb <402.29 ppb

84.66 ppb +- 34.36 ppb 0.92 ppm +- 53.53 ppm





1314.29 mBq/kg +- 942.86 mBq/kg
SNOLAB 56
0.4 g 0.877 Jun 3, 2013 (mBq/kg) <3934.58

115327.56 +- 127341.15 10997.84 +- 5849.17 59878.59 +- 5328.37 <13761.00

<2307.50

<1196.16


Heat Sink on Plastic Bag Canberra

Jun 4, 2013 (ppb or ppm) <318.70 ppb

9.34 ppm +- 10.31 ppm 19.36 ppm +- 10.29 ppm 1.47 ppm +- 1.31 ppm <444.48 ppm










SNOLAB 57
6.5 g 5.599 Aug 22, 2013 (mBq/kg) <18.29

<1420.21

<29.88

<25.56

1046.15 +- 553.85 <13.02

<11.49


Heat Sink Canberra

Aug 28, 2013 (ppb or ppm) <1.48 ppb

<115.04 ppb

<52.58 ppb

<6.29 ppb

33.79 ppm +- 17.89 ppm








SNOLAB 58 Rock from drift wall at SNOLAB Entrance 1768.1 g 0.052 Sep 9, 2013 (mBq/kg) 10591.15 +- 524.54 16319.89 +- 6027.16 306.98 +- 74.82 15878.98 +- 626.84 302462.13 +- 23908.32 85.06 +- 134.50 <61.58


Norite Rock


Sep 9, 2013 (ppb or ppm) 0.86 ppm +- 0.04 ppm 1.32 ppm +- 0.49 ppm 0.54 ppm +- 0.13 ppm 3.91 ppm +- 0.15 ppm 9769.53 ppm +- 772.24 ppm








SNOLAB 59 Mine Dust from near the SNOLAB Entrance 884.4 g 0.060 Sep 16, 2013 (mBq/kg) 17048.98 +- 780.39 15220.19 +- 7066.10 1749.54 +- 259.94 26225.20 +- 955.03 345486.43 +- 27407.96 <181.20

<6.37


Mine Dust Sample 1

Sep 16, 2013 (ppb or ppm) 1.38 ppm +- 0.06 ppm 1.23 ppm +- 0.57 ppm 3.08 ppm +- 0.46 ppm 6.45 ppm +- 0.23 ppm 1.11% +- 0.08%








SNOLAB 60 Mine Dust from near the SNOLAB Entrance 1636.6 g 0.064 Sep 16, 2013 (mBq/kg) 15985.65 +- 676.99 23021.73 +- 6596.67 391.79 +- 79.34 28947.53 +- 963.78 372365.94 +- 28931.99 251.74 +- 142.31 67.22 +- 113.81
Mine Dust Sample 2

Sep 16, 2013 (ppb or ppm) 1.29 pm +- 0.05 ppm 1.86 ppm +- 0.53 ppm 0.70 ppm +- 0.14 ppm 7.12 ppm +- 0.24 ppm 1.20% +- 0.09%









Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 61 112 items 10.2 g 3.059 Oct 8, 2013 (mBq/kg) 2.91 +- 37.81 <1602.28

71.96 +- 48.13 <19.49

607.84 +- 500.00 <37.71

6.79 +- 16.32
Spade Lug Connectors Canberra

Oct 11, 2013 (ppb or ppm) 0.24 ppb +- 3.06 ppb <129.79 ppb

126.65 ppb +- 84.71 ppb <4.80 ppb

19.63 ppm +- 16.15 ppm








SNOLAB 62 20 threaded studs, each 3.8-cm long, 3.9-mm thick 71.8 g 9.089 Mar 18, 2014 (mBq/kg) <0.499

221.53 +- 158.05 <4.08

0.55 +- 3.04 41.78 +- 39.00 <0.79

<1.28


Studs Canberra

Mar 27, 2014 (ppb or ppm) <0.040 ppb

17.94 ppb +- 12.80 ppb <7.17 ppb

0.14 ppb +- 0.75 ppb 1.35 ppm +- 1.26 ppm








SNOLAB 63
15.0 g 12.781 Mar 27, 2014 (mBq/kg) <11.30

<224.03

<4.67

1.26 +- 15.43 272.33 +- 193.33 <10.43

<2.71


Coax Wire Canberra

Apr 9, 2014 (ppb or ppm) <0.92 ppb

<18.15 ppb

<8.22 ppb

0.31 ppb +- 3.80 ppb 8.83 ppm +- 6.24 ppm








SNOLAB 64
16.6 g 7.622 Apr 28, 2014 (mBq/kg) <10.77

1266.30 +- 647.51 22.63 +- 11.86 <9.11

126.51 +- 150.60 <6.80

3.01 +- 4.26 54Mn Signal:
Steel Canberra

May 6, 2014 (ppb or ppm) <0.87 ppb

102.57 ppb +- 52.45 ppb 39.83 ppb +- 20.87 ppb <2.24 ppb

4.09 ppm +- 4.86 ppm





12.05 mBq/kg +- 6.02 mBq/kg
SNOLAB 65 Code: 415080010
Lot: A0340989
CAS: 8042-47-5		 869.2 g 6.624 Apr 16, 2014 (mBq/kg) 0.82 +- 0.69 6.05 +- 30.56 0.39 +- 1.03 1.60 +- 0.84 <3.05

<0.51

<0.10


Mineral Oil Product of BE

Apr 23, 2014 (ppb or ppm) 0.067 ppb +- 0.056 ppb 0.49 ppb +- 2.48 ppb 0.69 ppb +- 1.81 ppb 0.39 ppb +- 0.21 ppb <98.51 ppb










SNOLAB 66 Tap water from SNOLAB 1084.2 g 6.824 Aug 18, 2014 (mBq/kg) 3.00 +- 0.67 <28.67

0.11 +- 0.28 0.15 +- 0.54 16.46 +- 7.50 1.20 +- 0.55 <0.12


Water Supply from Vale


Aug 25, 2014 (ppb or ppm) 0.24 ppb +- 0.05 ppb <2.32 ppb

0.2 ppb +- 0.5 ppb 0.04 ppb +- 0.13 ppb 531.69 ppb +- 242.19 ppb








SNOLAB 67 700 cable ties of various sizes 653.8 g 6.821 Sep 15, 2014 (mBq/kg) 3.18 +- 1.48 <48.76

0.56 +- 1.66 0.94 +- 1.24 17.59 +- 16.67 <0.39

<0.62

7Be Signal:
Nylon Cable Ties Gardner Bender, Milwaukee, Wisconsin

Sep 22, 2014 (ppb or ppm) 0.26 ppb +- 0.12 ppb <3.95 ppb

0.98 ppb +- 2.92 ppb 0.23 ppb +- 0.31 ppb 568.14 ppb +- 538.50 ppb





7.34 mBq/kg +- 6.58 mBq/kg
SNOLAB 68
29.173 kg 21.732 Jan 26, 2015 (mBq/kg) <0.0043

<0.47

<0.015

<0.0068

<0.160

<0.0113

<0.0039


Copper


Feb 17, 2015 (ppb or ppm) <0.34 ppt

<38.23 ppt

<26.48 ppt

<1.68 ppt

<5.17 ppb










SNOLAB 69
161.4 g 6.919 Feb 17, 2015 (mBq/kg) <3.07

8.82 +- 72.94 5.38 +- 4.43 <3.46

<41.39

<5.73

<2.57


PVDF Nuts


Feb 24, 2015 (ppb or ppm) <0.25 ppb

0.71 ppb +- 5.91 ppb 9.47 ppb +- 7.80 ppb <0.85 ppb

<1.34 ppm










SNOLAB 70 Dessicant – anhydrous
Stock# 2300
 1036.8 g 0.949 Mar 3, 2015 (mBq/kg) 3465.43 +- 93.47 2066.64 +- 490.79 387.46 +- 31.75 405.61 +- 21.88 10800.99 +- 657.50 <14.23

2.80 +- 7.81
Drierite W. A. Hammond Drierite Company, Ltd.

Mar 4, 2015 (ppb or ppm) 280.70 ppb +- 7.57 ppb 167.40 ppb +- 39.75 ppb 681.92 ppb +- 55.88 ppb 99.78 ppb +- 5.38 ppb 348.87 ppm +- 21.24 ppm









Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 71 100% Columbian coffee 85.1 g 7.896 Mar 11, 2015 (mBq/kg) 288.31 +- 32.11 592.99 +- 710.91 21.43 +- 32.29 129.54 +- 24.08 593337.71 +- 30416.89 205.96 +- 33.67 <26.39


Coffee This is the coffee used at SNOLAB

Mar 19, 2015 (ppb or ppm) 23.35 ppb +- 2.60 ppb 48.03 ppb +- 57.58 ppb 37.72 ppb +- 56.84 ppb 31.87 ppb +- 5.82 ppb 9164.81 ppm +- 98.47 ppm








SNOLAB 72 MicroPremium AccuWipes made by Georgia Pacific 283.6 g 6.421 Mar 4, 2015 (mBq/kg) 85.35 +- 6.92 223.82 +- 99.27 11.19 +- 5.09 144.36 +- 8.19 550.45 +- 77.96 4.334 +- 3.843 <2.11


Acuwipes Type: 29956

Mar 11, 2015 (ppb or ppm) 6.91 ppb +- 0.56 ppb 18.13 ppb +- 8.04 ppb 19.70 ppb +- 8.97 ppb 35.51 ppb +- 2.02 ppb 17.78 ppm +- 2.52 ppm








SNOLAB 73 EXPO Bold Colour Dry Erase,
Certified AP nontoxic		 266.0 g 6.885 Mar 26, 2015 (mBq/kg) 19.86 +- 3.20 <116.19

4.11 +- 2.80 7.35 +- 2.58 524.99 +- 65.43 <3.44

<0.78


Dry Erase Markers Conforms to ASTM D4236
USA

Apr 2, 2015 (ppb or ppm) 1.61 ppb +- 0.26 ppb <9.41 ppb

7.07 ppb +- 4.96 ppb 1.81 ppb +- 0.63 ppb 16.96 ppb +- 2.11 ppm








SNOLAB 74 Lot number A2D 1031.3 g 8.105 Sep 15, 2016 (mBq/kg) 140.57 +- 4.99 359.55 +- 58.78 36.39 +- 3.06 64.79 +- 2.82 1471.93 +- 88.04 0.17 +- 1.09 <0.96


Alconox Alconox Inc.

Sep 23, 2016 (ppb or ppm) 11.39 ppb +- 0.40 ppb 29.12 ppb +- 4.76 ppb 64.04 ppb +- 5.38 ppb 15.94 ppb +- 0.69 ppb 47.54 ppm +- 2.84 ppm








SNOLAB 75
266.8 g 4.833 Oct 2, 2015 (mBq/kg) 4.23 +- 2.59 <180.09

<5.12

<3.07

<38.73

<2.67

<0.57


Marinelli Beaker
G-133N		 Ga-ma Associates

Oct 7, 2015 (ppb or ppm) 0.34 ppb +- 0.21 ppb <14.59 ppb

<9.00 ppb

<0.76 ppb

<1.25 ppm










SNOLAB 76 Apiezon Products
M&I Materials Ltd.		 611.1 g 2.923 Oct 30, 2015 (mBq/kg) 31219.28 +- 680.66 43247.09 +- 2470.05 1945.47 +- 106.67 29274.14 +- 733.63 88424.17 +- 4571.22 <20.01

5.16 +- 19.28
Apiezon Q Compound


Nov 2, 2015 (ppb or ppm) 2.53 ppm +- 0.06 ppm 3.50 ppm +- 0.20 ppm 3.42 ppm +- 0.19 ppm 9.66 ppm +- 0.18 ppm 2856.10 ppm +- 147.65 ppm








SNOLAB 77 Cross calibration of Well Calibration Sample 4.001 g 1.994 Jan 4, 2016 (mBq/kg) 180134.01 +- 4991.78 124852.65 +- 18255.53 9705.59 +- 698.33 842.65 +- 502.20 8580.75 +- 5437.50 95.50 +- 501.50 909.91 +- 389.43
Source 12-004-U3 (Well U source)


Jan 6, 2016 (ppb or ppm) 14.59 ppm +- 0.40 ppm 10.11 ppm +- 1.48 ppm 17.08 ppm +- 1.23 ppm 207.29 ppb +- 123.54 ppb 277.16 ppm +- 175.63 ppm








SNOLAB 78 Cross calibration of Well Calibration Sample 3.993 g 3.761 Jan 21, 2016 (mBq/kg) 5178.86 +- 535.32 15660.94 +- 9559.08 <708.49

121298.18 +- 2832.54 15530.68 +- 3475.83 <495.87

<303.53


Source 12-005-T3 (Well Th source)


Jan 25, 2016 (ppb or ppm) 419.49 ppb +- 43.36 ppb 1.27 ppm +- 0.77 ppm <1.25 ppm

29.84 ppm +- 0.70 ppm 501.64 ppm +- 112.27 ppm








SNOLAB 79 Cross calibration of Well Calibration Sample 4.014 g 1.117 Feb 1, 2016 (mBq/kg) 2996.51 +- 524.29 5861.91 +- 6322.26 <378.43

1763.17 +- 443.07 375377.43 +- 29420.77 <343.55

<406.33


Source 12-006-K3 (Well K Source)


Feb 2, 2016 (ppb or ppm) 242.72 ppb +- 42.47 ppb 474.82 ppb +- 512.10 ppb <666.03 ppb

433.74 ppb +- 108.99 ppb 12124.69 ppm +- 950.29 ppm








SNOLAB 80 Sample prepared on Feb. 9, 2016 750 g 0.183 Mar 7, 2016 (mBq/kg) 210.65 +- 37.82 35.33 +- 279.23 <29.80

10.09 +- 15.60 94.17 +- 125.13 <8.99

<10.72


22Na Source UPW Wash Solution


Mar 7, 2016 (ppb or ppm) 17.06 ppb +- 3.06 ppb 2.86 ppb +- 22.62 ppb <52.45 ppb

2.48 ppb +- 3.84 ppb 3.04 ppm +- 4.04 ppm









Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 81 Sample prepared on Feb. 9, 2016 750 g 3.578 Mar 7, 2016 (mBq/kg) 0.55 +- 1.22 19.21 +- 33.69 <2.14

16.63 +- 2.24 10.03 +- 12.63 <1.49

<0.28


22Na Source UPW Wash Solution


Mar 11, 2016 (ppb or ppm) 0.04 ppb +- 0.10 ppb 1.56 ppb +- 2.73 ppb <3.77 ppb

4.09 ppb +- 0.58 ppb 323.82 ppb +- 407.80 ppb









Additional Activities:
(mBq/kg)





228Ac: <1.37














(ppb or ppm)




(Not in Equilibrium with other Th daughters) <0.34 ppb












SNOLAB 82
12.4 g 7.355 Aug 31, 2016 (mBq/kg) 94.72 +- 49.81 <1760.58

14.66 +- 52.05 <59.65

1531.29 +- 688.79 <49.84

<21.21


Acoustic Foam Tiles


Sep 8, 2016 (ppb or ppm) 7.67 ppb +- 4.03 ppb <142.61 ppb

25.80 ppb +- 91.60 ppb <14.67 ppb

49.46 ppm +- 22.25 ppm








SNOLAB 83
731.0 g 6.617 Sep 8, 2016 (mBq/kg) 1.18 +- 0.80 <28.70

0.93 +- 1.01 <0.57

12.25 +- 9.77 0.11 +- 0.82 <0.22


Acrylic Marinelli Spool


Sep 15, 2016 (ppb or ppm) 0.10 ppb +- 0.07 ppb <2.33 ppb

1.64 ppb +- 1.77 ppb <0.14 ppb

395.82 ppb +- 315.40 ppb








SNOLAB 84 Item No. 27-058-53 511.5 g 9.210 Nov 10, 2016 (mBq/kg) 163.40 +- 6.09 52.70 +- 72.14 13.39 +- 2.04 155.75 +- 5.40 11336.28 +- 594.88 <1.40

<1.52


Nitrile Gloves Fisherbrand Scientific

Nov 22, 2016 (ppb or ppm) 13.24 ppb +- 0.49 ppb 4.27 ppb +- 5.84 ppb 23.48 ppb +- 3.59 ppb 38.31 ppb +- 1.33 ppb 366.16 ppm +- 19.21 ppm








SNOLAB 85
53.3 g 6.935 Oct 26, 2016 (mBq/kg) 9.82 +- 5.32 31.42 +- 193.80 <6.29

<7.26

461.30 +- 166.92 <6.10

<4.62


Dynaflex 230 Caulking DAP Canada

Nov 2, 2016 (ppb or ppm) 0.80 ppb +- 0.43 ppb 2.55 ppb +- 15.70 ppb <11.06 ppb

<1.79 ppb

14.90 ppm +- 5.39 ppm








SNOLAB 86 West Coast Roast 100% Arabica 450.3 g 0.090 Apr 20, 2018 (mBq/kg) 352.62 +- 137.01 2403.72 +- 3655.11 203.25 +- 155.56 55.25 +- 124.88 502553.85 +- 28181.21 123.77 +- 129.55 <190.48


President’s Choice Coffee Beans UPC: 060383722173
Additional counting to be done! Apr 20, 2018 (ppb or ppm) 28.56 ppb +- 11.10 ppb 194.70 ppb +- 296.06 ppb 357.71 ppb +- 273.78 ppb 13.59 ppb +- 30.72 ppb 16232.49 ppm +- 910.25 ppm









Additional Activities:
(mBq/kg)





228Ac: 867.24 +- 434.35











(ppb or ppm)




(Not in Equilibrium with other Th daughters) 213.34 ppb +- 106.85 ppb









SNOLAB 87 Mortite weatherstrip and caulking cord 615.0 g 1.081 Jun 21, 2017 (mBq/kg) 15756.94 +- 399.83 12245.16 +- 2613.66 881.32 +- 77.19 11133.53 +- 267.15 18634.15 +- 1251.38 <26.20

16.57 +- 27.80
Caulking Material Mortite Inc. Thermwell Products Co. Inc.

Jun 22, 2017 (ppb or ppm) 1.28 pm +- 0.03 ppm 991.86 ppb +- 211.71 ppb 1.55 ppm +- 0.14 ppm 2.74 ppm +- 0.07 ppm 601.88 ppm +- 40.42 ppm








SNOLAB 88 HomePak Brass Screws, Home Hardware 577.7 g 6.649 Jun 22, 2017 (mBq/kg) <0.39

<30.74

<1.47

<0.63

<7.30

<0.30

<0.18


200 Brass Screws Item No: 2122-069 and
Item No. 2122-070

Jun 29, 2017 (ppb or ppm) <31.41 ppt

<2.49 ppb

<2.59 ppb

<0.15 ppb

<235.72 ppb











Additional Activities:
(mBq/kg)

58Co: 1.65 +- 0.67 65Zn: 5.45 +- 1.77











(ppb or ppm)


















KCM 01 Sample #1 1360.7 g 6.394 Feb 8, 2018 (Bq/kg) 58.16 +- 1.23 2.86 +- 1.66 1.21 +- 0.17 15.70 +- 0.37 Not measurable due to interference Not measurable due to interference <6.57


Water Sample from Kidd Creek Mine Level 7850 29.01.2018_KC7850_12299_SLRS

Feb 15, 2018 (ppb or ppm) 4.71 ppm +- 0.10 ppm 231.86 ppb +- 134.12 ppb 2.13 ppm +- 0.30 ppm 3.86 ppm +- 0.09 ppm












Additional Activities:
(Bq/kg)





228Ac: 193.34 +- 5.12











(ppb or ppm)




(Not in Equilibrium with other Th daughters) 47.56 ppm +- 1.26 ppm









KCM 02 Sample #2 1059.8 g 6.771 Feb 15, 2018 (mBq/kg) 12.06 +- 1.29 22.35 +- 86.55 0.04 +- 1.13 3.02 +- 1.12 1464.43 +- 88.68 <0.92

<0.99


Service Water Sample from Kidd Creek Mine Level 7850 29.01.2018_KC7850_SW_SLRS

Feb 22, 2018 (ppb or ppm) 0.98 ppb +- 0.10 ppb 1.81 ppb +- 7.01 ppb 0.07 ppb +- 1.98 ppb 0.74 ppb +- 0.28 ppb 47.30 ppm +- 2.86 ppm









Additional Activities:
(mBq/kg)





228Ac: 31.34 +- 3.344











(ppb or ppm)




(Not in Equilibrium with other Th daughters) 7.71 ppb +- 0.82 ppb









SNOLAB 89 Floor Tile from SNOLAB Surface Clean Room 78.0 g 3.090 Mar 26, 2018 (mBq/kg) 5579.03 +- 161.18 2506.59 +- 679.24 190.53 +- 18.41 399.10 +- 34.67 12159.73 +- 877.31 <29.76

0.66 +- 15.01
Floor Tile


Mar 29, 2018 (ppb or ppm) 451.90 ppb +- 13.05 ppb 203.03 ppb +- 55.02 ppb 335.33 ppb +- 32.41 ppb 98.18 ppb +- 8.53 ppb 392.76 ppm +- 28.34 ppm








SNOLAB 90 BLU-25751704
Lot 171123, and
BLU-25751706 / 08
Lot 171020		 1098.5 g 0.132 Mar 19, 2018 (mBq/kg) <943.39

<8063.27

432.64 +- 3464.28 1122003.56 +- 25889.02 8536.19 +- 3071.46 153.68 +- 398.73 296.11 +- 215.41
Welding Electrodes Air Liquide, Blueshield,
Made in China

Mar 19, 2018 (ppb or ppm) <76.41 ppb

<653.13 ppb

0.76 ppm +- 6.10 ppm 276.01 ppm +- 6.37 ppm 275.72 ppm +- 99.21 ppm









Additional Activities:
(mBq/kg)





228Ac: 142667.38 +- 4758.51











(ppb or ppm)




(Not in Equilibrium with other Th daughters) 35.10 ppm +- 1.17 ppm










Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 91 Roasted Peanuts in the shell 451.7 g 0.083 Apr 20, 2018 (mBq/kg) 1094.34 +- 161.99 1378.50 +- 2512.51 <122.14

72.45 +- 103.31 188111.58 +- 12145.23 17.14 +- 92.63 <98.99


No Name Brand Roasted Peanuts UPC: 060383182229

Apr 20, 2018 (ppb or ppm) 88.64 ppb +- 13.12 ppb 111.66 ppb +- 203.51 ppb <214.96 ppb

17.83 ppb +- 25.42 ppb 6076.00 ppm +- 392.29 ppm








SNOLAB 92 Carrots – Canada Grade #2 781.6 g 0.076 Apr 20, 2018 (mBq/kg) 430.05 +- 84.71 <2354.67

<68.66

53.70 +- 66.87 104823.44 +- 6907.63 43.87 +- 50.76 <41.91


No Name Brand Carrots UPC: 060383165611

Apr 20, 2018 (ppb or ppm) 34.83 ppb +- 6.87 ppb <190.73 ppb

<120.84 ppb

13.21 ppb +- 16.45 ppb 3385.80 ppm +- 223.12 ppm








SNOLAB 93
428.6 g 0.104 Apr 27, 2018 (mBq/kg) 40065.50 +- 1228.62 1381.74 +- 7982.37 1695.31 +- 419.58 27620.08 +- 853.24 227741.48 +- 13905.74 85.26 +- 241.78 1.42 +- 154.78
Brazil Nuts

Additional counting to be done! Apr 27, 2018 (ppb or ppm) 3.25 ppm +- 0.10 ppm 111.92 ppb +- 646.57 ppb 2.98 ppm +- 0.74 ppm 6.80 ppm +- 0.21 ppm 7356.05 ppm +- 449.16 ppm








SNOLAB 94 Roasted unsalted almonds 779.6 g 0.104 Apr 27, 2018 (mBq/kg) 361.40 +- 82.82 688.22 +- 1944.26 22.35 +- 80.63 57.71 +- 59.40 236531.56 +- 13340.17 <99.04

16.58 +- 65.42
Almonds Reddi Snack
UPC: 064777410929

Apr 27, 2018 (ppb or ppm) 29.27 ppb +- 6.71 ppb 55.75 ppb +- 157.49 ppb 39.34 ppb +- 141.91 ppb 14.20 ppb +- 14.62 ppb 7639.97 ppm +- 430.89 ppm








SNOLAB 95 Lot No. A4B8 02/20 1871.5 g 6.812 May 4, 2018 (mBq/kg) 168.08 +- 5.25 87.80 +- 46.73 2.54 +- 0.53 130.66 +- 4.73 6994.39 +- 365.54 < 1.05

<1.67


Alconox Alconox Inc.

May 11, 2018 (ppb or ppm) 13.61 ppb +- 0.43 ppb 7.11 ppb +- 3.79 ppb 4.48 ppb +- 0.93 ppb 32.14 ppb +- 1.16 ppb 225.92 ppm +- 11.81 ppm









Additional Activities:
(mBq/kg)





228Ac: 48.10 +- 4.69











(ppb or ppm)




(Not in Equilibrium with other Th daughters) 11.83 ppb +- 1.15 ppb









SNOLAB 96 Sterling AP 308/3-8L, AWS E308-16, E308L-16 2294.9 g 0.229 May 11, 2018 (mBq/kg) 42243.88 +- 980.97 60281.05 +- 8568.16 7940.22 +- 547.12 7058.99 +- 214.89 301320.32 +- 15652.10 <54.35

<84.81


Premium Welding Electrodes --- Calibration McKay Welding Products, Troy, Ohio, Lot No 24L056,
Heat No. 738228

May 11, 2018 (ppb or ppm) 3.42 ppm +- 0.08 ppm 4.88 ppm +- 0.69 ppm 13.97 ppm +- 0.96 ppm 1.74 ppm +- 0.05 ppm 9732.65 ppm +- 505.56 ppm








SNOLAB 97
86.4 g 6.125 Jul 13, 2018 (mBq/kg) 478.68 +- 29.52 219.64 +- 395.54 10.67 +- 6.54 636.18 +- 31.76 1479.33 +- 222.04 <7.43

3.50 +- 6.49
Ultrafast LED Pulser and Cable Simon Peeters (U. of Sussex)

Jul 20, 2018 (ppb or ppm) 38.77 ppb +- 2.39 ppb 17.79 ppb +- 32.04 ppb 18.77 ppb +- 11.50 ppb 156.50 ppb +- 7.81 ppb 47.78 ppm +- 7.17 ppm








SNOLAB 98 Model No: HR-125 169.6 g 10.437 Jul 20, 2018 (mBq/kg) <3.04

101.52 +- 67.84 <3.58

0.19 +- 2.64 112.10 +- 41.08 <1.87

0.17 +- 1.15 54Mn Signal:
Swival Hoist Ring The Crosby Group

Aug 1, 2018 (ppb or ppm) <0.25 ppb

8.22 ppb +- 5.50 ppb <6.30 ppb

0.05 ppb +- 0.65 ppb 3.62 ppb +- 1.33 ppb





1.18 mBq/kg +- 1.59 mBq/kg
SNOLAB 99 Copper Used to Shield the Canberra Coax Detector 1417.17 g 9.916 Sep 21, 2018 (mBq/kg) <0.33

<39.21

<2.14

<0.64

<4.75

<0.26

<0.12

58Co Signal:
Copper Aurubis

Oct 1, 2018 (ppb or ppm) <26.41 ppt

<3.18 ppb

<3.77 ppb

<0.16 ppb

<153.25 ppb







0.45 mBq/kg +- 0.34 mBq/kg
SNOLAB 100
6.61 g 10.604 Oct 22, 2018 (mBq/kg) 191.27 +- 80.23 1045.81 +- 1413.24 <104.54

<63.90

258.40 +- 833.59 <61.73

<19.67


SCIGRIP 4 – Acrylic Cement SCIGRIP Corporation After Evaporation
Nov 2, 2018 (ppb or ppm) 15.50 ppb +- 6.50 ppb 84.71 ppb +- 114.47 ppb <183.99 ppb

<15.72 ppb

8.35 ppm +- 26.92 ppm









Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SNOLAB 101 Accuwipes, Used to verify absence of contaminants on the new calibration samples. 4.6 g 6.847 Dec 5, 2018 (mBq/kg) 178.55 +- 97.76 917.82 +- 1394.21 175.13 +- 99.42 7.99 +- 81.96 <1613.48

20.22 +- 87.61 <18.26


Ge Calibration Sample Swipe Tests


Dec 12, 2018 (ppb or ppm) 14.46 ppb +- 7.92 ppb 73.34 ppb +- 112.93 ppb 308.24 ppb +- 174.98 ppb 1.97 ppb +- 20.16 ppb <52.12 ppm










SNOLAB 102 Lake in City of Greater Sudbury, Ontario 958.3 g 7.792 Jan 7, 2019 (mBq/kg) 1.58 +- 0.80 <44.58

<1.21

33.77 +- 2.18 7.59 +- 7.35 <0.52

<0.40


St. Charles Lake Water


Jan 15, 2019 (ppb or ppm) 0.13 ppb +- 0.06 ppb <3.61 ppb

<2.13 ppb

8.31 ppb +- 0.54 ppb 0.24 ppm +- 0.24 ppm









Additional Activities:
(mBq/kg)





228Ac: 0.31 +- 1.21











(ppb or ppm)




(Not in Equilibrium with other Th daughters) 0.08 ppb +- 0.3 ppb









SNOLAB 103 Lake in City of Greater Sudbury, Ontario 980.0 g 17.483 Dec 19, 2018 (mBq/kg) 0.84 +- 0.45 3.77 +- 14.02 0.17 +- 0.30 <0.63

53.85 +- 7.72 0.42 +- 0.42 <0.14

7Be Signal:
Ramsey Lake Water


Jan 7, 2018 (ppb or ppm) 68.07 ppt +- 36.17 ppt 0.31 ppb +- 1.14 ppb 0.3 ppb +- 0.52 ppb <0.15 ppb

1.74 ppm +- 0.25 ppm





8.17 mBq/kg +- 3.13 mBq/kg
SNOLAB 104 Lake in City of Greater Sudbury, Ontario 939.4 g 6.889 Nov 15, 2019 (mBq/kg) 0.42 +- 0.81 20.20 +- 26.28 <0.86

3.45 +- 0.94 113.76 +- 16.24 <1.07

<0.50


Kelly Lake Water Sample collected on October 26, 2018 @ 12:21

Nov 22, 2019 (ppb or ppm) 0.03 ppb +- 0.07 ppb 1.64 ppb +- 2.13 ppb <1.51 ppb

0.85 ppb +- 0.23 ppb 3.67 ppm +- 0.52 ppm








SNOLAB 105 Lake in City of Greater Sudbury, Ontario 957.9 g 8.403 Oct 11, 2019 (mBq/kg) 1.20 +- 0.77 13.98 +- 22.97 0.26 +- 0.42 <0.70

73.23 +- 12.08 <0.90

0.15 +- 0.28
Robinson Lake Water Sample collected on Oct 26, 2018

Oct 21, 2019 (ppb or ppm) 97.04 ppt +- 62.73 ppt 1.13 ppb +- 1.86 ppb 0.47 ppb +- 0.74 ppb <0.17 ppb

2.37 ppm +- 0.39 ppm








SNOLAB 106 Lake in City of Greater Sudbury, Ontario 876.4 g 17.874 Dec 19, 2019 (mBq/kg) 0.12 +- 0.37 <22.32

0.87 +- 0.26 <0.54

32.70 +- 6.72 <0.83

<0.093


Long Lake Water Sample collected on 2018-10-26 at 13:57

Jan 6, 2020 (ppb or ppm) 0.01 ppb +- 0.03 ppb <1.81 ppb

1.53 ppb +- 0.45 ppb <0.13 ppb

1056.27 ppb +- 216.99 ppb








SNOLAB 107 Lake in City of Greater Sudbury, Ontario 950.9 g 21.742 May 19, 2020 (mBq/kg) <0.74

<10.22

0.45 +- 0.22 1.02 +- 0.36 124.05 +- 10.89 0.30 +- 0.36 <0.14


Meatbird Lake Water Sample collected on 2018-10-30 at 15:27

Jun 10, 2020 (ppb or ppm) <59.94 ppt

<0.83 ppb

0.79 ppb +- 0.38 ppb 0.25 ppb +- 0.09 ppb 4.01 ppm +- 0.35 ppm








SNOLAB 108 Lake in City of Greater Sudbury, Ontario 899.2 g 6.854 Jan 22, 2020 (mBq/kg) 1.13 +- 0.63 <23.10

0.26 +- 0.39 <0.70

16.28 +- 8.88 0.48 +- 0.68 <0.51


Vermilion Lake Water Sample collected on 2018-10-23 at 18:07

Jan 29, 2020 (ppb or ppm) 0.09 ppb +- 0.05 ppb <1.87 ppb

0.46 ppb +- 0.68 ppb <0.17 ppb

525.78 ppb +- 286.92 ppb








SNOLAB 109 Lake in City of Greater Sudbury, Ontario 930.1 g 8.847 Oct 30, 2019 (mBq/kg) 0.40 +- 0.78 <36.40

<0.35

<1.33

295.44 +- 25.57 1.48 +- 0.73 0.83 +- 0.46
Simon Lake Water Sample collected on November 4, 2018 @ 15:30

Nov 8, 2019 (ppb or ppm) 0.03 ppb +- 0.06 ppb <2.95 ppb

<0.62 ppb

<0.33 ppb

9.54 ppm +- 0.83 ppm








SNOLAB 110 Lake in City of Greater Sudbury, Ontario 999.0 g 6.944 Nov 8, 2019 (mBq/kg) <0.98

<31.44

0.20 +- 0.42 <0.56

63.63 +- 12.46 1.46 +- 0.76 <0.58


Nepahwin Lake Water Sample collected on November 4, 2018 @ 16:00

Nov 15, 2019 (ppb or ppm) <79.38 ppt

<2.55 ppb

0.34 ppb +- 0.73 ppb <0.14 ppb

2.06 ppm +- 0.4 ppm








SNOLAB 111 Lake in City of Greater Sudbury, Ontario 946.0 g 5.798 Nov 22, 2019 (mBq/kg) 1.53 +- 0.78 <34.75

0.64 +- 0.53 <1.15

22.89 +- 9.98 <1.10

<0.22


Lohi Lake Water Sample collected on November 11, 2018 @ 15:00

Nov 29, 2019 (ppb or ppm) 0.12 ppb +- 0.06 ppb <2.81 ppb

1.13 ppb +- 0.93 ppb <0.28 ppb

739.22 ppb +- 322.26 ppb








SNOLAB 112 Sample #1 supplied by SNOLAB Com. and Outreach goup 98.2 g 4.937 Jan 30, 2019 (mBq/kg) 11.83 +- 14.27 575.90 +- 396.50 <26.41

<26.34

27280.00 +- 1582.00 26.10 +- 15.09 <20.72


Fabric and ink for SNOLAB DEAP Banner 3 Samples:
44 cm x 29.9 cm x 0.54 mm thick

Feb 4, 2019 (ppb or ppm) 4.48 ppb +- 26.03 ppb 4.48 ppb +- 26.03 ppb <46.48 ppb

<3.79 ppb

885.78 ppm +- 52.43 ppm








SNOLAB 113 Health Canada Air Filters
ID No:44878		 1.1 g 1.000 Feb 4, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
1 Inch Air Filter Blank 24 hour run
First run is 190204p155414 Feb 5, 2019 (mBq/kg) 949.50 +- 641.40 6703.00 +- 13140.00 468.70 +- 722.22 256.50 +- 713.50 4979.40 +- 6901.00 <756.50

84.73 +- 301.70 2872.30 +- 4051.00





(ppb or ppm) 76.91 ppb +- 51.95 ppb 542.94 ppb +- 1064.34 ppb 824.91 ppb +- 1271.11 ppb 63.1 ppb +- 175.52 ppb <31.63 ppm















Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) 197.10 +- 436.30 <448.00

150.10 +- 313.40 <258.10

<527.80

<659.40

<537.90

<3298.00




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) <671.80

<1986.00

1345.50 +- 873.00 2555.00 +- 3519.00 <429.10

237.12 +- 393.4



































SNOLAB 114 Health Canada Air Filters
ID No:44878		 1.1 g 7.604 Feb 5, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
1 Inch Air Filter Blank 1 week run

Feb 13, 2019 (mBq/kg) 764.10 +- 242.40 <6843.00

<378.30

1879.00 +- 261.00 6520.50 +- 2800.00 184.03 +- 204.60 <47.61

742.59 +- 1419.00





(ppb or ppm) 61.89 ppb +- 19.63 ppb <554.28 ppb

<665.81 ppb

462.23 ppb +- 64.21 ppb 210.61 ppm +- 90.44 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) <119.10

108.31 +- 139.50 306.10 +- 123.70 10.73 +- 69.37 <217.90

<107.70

242.30 +- 184.00 <1448.00




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) 37.88 +- 255.60 244.00 +- 465.70 <541.20

164.30 +- 779.60 <217.50

<191.40





































SNOLAB 115 Health Canada Air Filters
ID No:39807 (1.2 g), 39810 (1.3 g), 39813 (1.2 g), 39901 (1.2 g)		 4.9 g 1.000 Feb 13, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
4 – 1” Air Filters 24 hour run
(106Ru and 22Na)
First run is 190213p172606 Feb 14, 2019 (mBq/kg) 2178.00 +- 473.80 10050.00 +- 9924.00 <739.10

3402.00 +- 518.90 96048.00 +- 11010.00 486.32 +- 305.70 <276.20

77107.00 +- 7228.00





(ppb or ppm) 176.42 ppb +- 38.38 ppb 814.05 ppb +- 803.84 ppb <1300.82 ppb

836.89 ppb +- 127.65 ppb 3102.35 ppm +- 355.62 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) 171.70 +- 294.20 <177.80

407.00 +- 195.20 <287.60

984.06 +- 454.60 146.00 +- 175.70 <541.50

<1058.00




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) <337.70

<871.00

<847.80

<2405.00

196.50 +- 363.10 158.76 +- 235.60



































SNOLAB 116 Health Canada Air Filters
ID No:39807 (1.2 g), 39810 (1.3 g), 39813 (1.2 g), 39901 (1.2 g)		 4.9 g 7.534 Feb 14, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
4 – 1” Air Filters 1 week run
(106Ru and 22Na)

Feb 22, 2019 (mBq/kg) 2195.00 +- 182.30 4493.00 +- 3489.00 196.70 +- 175.20 3710.00 +- 208.80 66826.00 +- 4585.00 445.82 +- 117.70 <64.40

67770.00 +- 4028.00





(ppb or ppm) 177.8 ppb +- 14.77 ppb 363.93 ppb +- 282.61 ppb 346.19 ppb +- 308.35 ppb 912.66 ppb +- 51.36 ppb 2158.48 ppm +- 148.1 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) 116.40 +- 116.00 <50.26

462.80 +- 84.97 <33.64

1455.30 +- 194.40 72.38 +- 45.58 <138.40

<425.20




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) <169.7

<364.30

<296.00

<491.70

265.10 +- 133.30 16.86 +- 87.79



































SNOLAB 117 Health Canada Air Filters 8.5 g 1.042 Feb 27, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
2” Air Filter Blank Filter # 44877

Feb 28, 2019 (mBq/kg) 61.49 +- 89.15 1355.00 +- 2101.00 8.83 +- 113.50 92.81 +- 105.90 1256.40 +- 1170.00 <898.54

<58.46

<924.90


24 hour run


(ppb or ppm) 4.98 ppb +- 7.22 ppb 109.76 ppb +- 170.18 ppb 15.53 ppb +- 199.76 ppb 22.83 ppb +- 26.05 ppb 40.58 ppm +- 37.79 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) <56.01

<70.38

<70.02

<52.78

52.51 +- 64.36 <86.48

<125.00

<481.70




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) <104.10

275.75 +- 206.80 <159.50

<468.60

13.96 +- 70.41 <49.06





































SNOLAB 118 Health Canada Air Filters 8.5 g 7.806 Feb 28, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
2” Air Filter Blank Filter # 44877

Mar 8, 2019 (mBq/kg) 44.81 +- 34.94 <869.50

<53.51

171.40 +- 39.01 158.10 +- 310.00 <44.46

<21.29

268.67 +- 219.50

1 week run


(ppb or ppm) 3.63 ppb +- 2.83 ppb <70.43 ppb

<94.18 ppb

42.16 ppb +- 9.6 ppb 5.11 ppm +- 10.01 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) <25.09

<30.70

37.59 +- 17.78 <16.17

7.01 +- 16.44 <13.24

<24.56

<161.20




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) <25.79

95.68 +- 74.12 13.31 +- 47.46 <138.00

<23.77

16.43 +- 17.11



































SNOLAB 119 Health Canada Air Filters 8.5 g 1.104 Mar 8, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
2” Air Filter Blank 24 hour run
(Low Activity of 134Cs)

Mar 9, 2019 (mBq/kg) 464.50 +- 186.30 <4540.00

66.64 +- 182.60 554.40 +- 173.70 4502.40 +- 1885.00 8744.00 +- 717.00 28.74 +- 61.26 2070.80 +- 1520.00



First run is 190308p140851
(ppb or ppm) 37.62 ppb +- 15.09 ppb <367.74 ppb

117.29 ppb +- 321.38 ppb 136.38 ppb +- 42.73 ppb 145.43 ppm +- 60.89 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) 122.10 +- 164.70 230.99 +- 123.00 533.70 +- 117.10 6.05 +- 56.38 222.91 +- 116.70 <87.58

29.35 +- 119.70 <812.60




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) <244.60

<359.00

<372.00

<786.50

281.60 +- 129.20 <109.30





































SNOLAB 120 Health Canada Air Filters 8.5 g 8.659 Mar 9, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
2” Air Filter Blank 1 week run
(Low Activity of 134Cs)

Mar 18, 2019 (mBq/kg) 452.30 +- 65.81 1530.00
1071.00 90.95 +- 64.78 639.20 +- 66.06 3520.60 +- 6078.00 8972.10 +- 493.30 <32.87

166.52 +- 494.90





(ppb or ppm) 36.64 ppb +- 5.33 ppb 123.93 ppb +- 86.75 ppb 160.07 ppb +- 114.01 ppb 157.24 ppb +- 16.25 ppb 113.72 ppm +- 196.32 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) 9.70 +- 59.10 44.18 +- 49.17 699.70 +- 53.14 <19.74

47.37 +- 33.36 <20.88

57.06 +- 39.58 <150.6




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) <52.22

86.24 +- 160.00 <115.80

<314.00

32.09 +- 38.64 23.28 +- 26.03



































SNOLAB 121 Health Canada Air Filters 8.8 g 1.854 Mar 18, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
2” Air Filter Blank 24 hour run
(High Activity of 134Cs)

Mar 20, 2019 (mBq/kg) 1305.00 +- 297.40 3495.00 +- 4660.00 471.50 +- 318.80 646.10 +- 210.20 5204.20 +- 1449.00 87045.00 +- 4558.00 <47.22

<3703.00






(ppb or ppm) 105.71 ppb +- 24.09 ppb 283.1 ppb +- 377.46 ppb 829.84 ppb +- 561.09 ppb 158.94 ppb +- 51.71 ppb 168.1 ppm +- 46.8 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh





(mBq/kg) <410.00

581.29 +- 295.30 6257.00 +- 352.30 <44.78

<90.37

80.50 +- 60.96 135.04 +- 186.10
N/A



































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) <144.20

<938.90

<456.50

<951.00

<162.30

38.18 +- 94.51



































SNOLAB 122 Health Canada Air Filters 34.42 g 1.285 Apr 29, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
Fish Sample 24 hour run
(Low Activity of 134Cs)

Apr 30, 2019 (mBq/kg) 226.30 +- 144.60 <2624.00

223.60 +- 176.70 70.51 +- 136.80 637970.00 +- 34210.00 2618.60 +- 281.40 <218.80

<1678.00






(ppb or ppm) 18.33 ppb +- 11.71 ppb <212.54 ppb

393.54 ppb +- 310.99 ppb 17.35 ppb +- 33.65 ppb 20606.43 ppm +- 1104.98 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) <207.60

208.34 +- 167.20 <116.00

<159.40

<343.90

<51.56

40.30 +- 113.30 <1317.00




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) <274.40

<762.20

342.63 +- 214.00 <1490.00

<328.70

169.62 +- 174.80



































SNOLAB 123 Health Canada Air Filters 34.42 g 7.555 Apr 30, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
Fish Sample 1 week run
(Low Activity of 134Cs)

May 8, 2019 (mBq/kg) 51.24 +- 43.52 <1356.00

<110.40

6.24 +- 36.98 631530.00 +- 32520.00 2309.80 +- 152.30 <99.48

867.56 +- 500.00





(ppb or ppm) 4.15 ppb +- 3.53 ppb <109.84 ppb

<194.3 ppb

1.53 ppb +- 9.1 ppb 20398.42 ppm +- 1050.4 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) <99.09

33.74 +- 68.59 214.80 +- 56.21 <67.02

<181.80

<10.27

<70.29

<660.50




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) <118.80

<333.50

<130.70

<705.40

<111.60

<112.80





































SNOLAB 124 Health Canada Air Filters 38.24 g 1.132 Apr 15, 2019 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
7Be
Fish Sample 24 hour run
(High Activity of 134Cs)

Apr 16, 2019 (mBq/kg) 399.40 +- 169.10 <5986.00

1502.00 +- 426.10 <126.10

371730.00 +- 20620.00 185810.00 +- 9426.00 <180.10

11258.00 +- 3584.00

ID NO: 29740


(ppb or ppm) 32.35 ppb +- 13.7 ppb <484.87 ppb

2643.52 ppb +- 749.94 ppb <31.02 ppb

12006.88 ppm +- 666.03 ppm













Results: 131I
133I

134Cs

136Cs
22Na 24Na 99mTc 106Rh / 106Ru





(mBq/kg) <275.30

1023.60 +- 360.10 13940.00 +- 575.20 <62.95

<224.30

30.34 +- 37.19 <238.40

N/A




































Results: 140La
140Ba

141Ce

99Mo
95Zr 95Nb






(mBq/kg) N/A

<1356.00

<425.70

<1251.00

599.10 +- 221.90 <138.40





































SNOLAB 125 Sample #2 supplied by SNOLAB Com. and Outreach goup 122.3 g 4.896 Feb 22, 2019 (mBq/kg) 63.63 +- 14.37 <459.70

39.42 +- 15.81 9.27 +- 11.55 4505.90 +- 409.80 <8.33

<4.08


Fabric and ink for SNOLAB DEAP Banner Small Banner: 32 cm x 30.3 cm x 0.39 mm thick
Large Banner: 68 cm x 60.5 cm x 0.39 mm thick

Feb 27, 2019 (ppb or ppm) 5.15 ppb +- 1.16 ppb <37.24 ppb

<16.58 ppb

2.28 ppb +- 2.84 ppb 145.54 ppm +- 13.24 ppm








SNOLAB 126 Sample from U. of Alberta 2199.0 g 10.840 Sep 23, 2019 (mBq/kg) <1.18

<22.06

<0.36

<1.75

11.94 +- 8.54 <0.79

<0.20


Plastic Scintillator (Polystryrene) NUVIA, Chech Rep.

Oct 4, 2019 (ppb or ppm) <95.58 ppt

<1.79 ppb

<0.63 ppb

<0.43 ppb

385.63 ppb +- 275.81 ppb








SNOLAB 127 Fisher A940-1
Certified ACS
Lot no 130187		 319.0 g 6.007 Sep 10, 2019 (mBq/kg) <1.57

<57.98

<1.33

<1.25

34.07 +- 16.87 1.34 +- 1.28 <0.41


Citric Acid Anhydrous Fisher Scientific

Sep 16, 2019 (ppb or ppm) <0.13 ppb

<4.7 ppb

<2.34 ppb

<0.31 ppb

1100.3 ppb +- 544.9 ppb








SNOLAB 128 Mild to medium acidic liquid 1002.22 g 8.854 Jan 6, 2020 (mBq/kg)





















Cross Comparison Sample Active Contact I. Lawson or B. Cleveland for results

Jan 15, 2020 (ppb or ppm)























SNOLAB 129 NIST Sample 28.825 g 3.882 Feb 21, 2020 (mBq/kg) 11990.00 +- 352.20 19860.00 +- 2966.00 616.30 +- 58.74 13570.00 +- 346.60 253370.00 +- 13590.00 7268.90 +- 415.80 <65.95


Powdered Ocean Sediment Calibration Sample Cross Comparison Sample A

Feb 25, 2020 (ppb or ppm) 971.19 ppb +- 28.53 ppb 1608.66 ppb +- 240.25 ppb 1084.69 ppb +- 103.38 ppb 3338.22 ppb +- 85.26 ppb 8183.85 ppm +- 438.96 ppm








SNOLAB 130 NIST Sample 33.454 g 6.034 Feb 25, 2020 (mBq/kg) 11250.00 +- 297.60 15090.00 +- 2194.00 631.50 +- 44.07 12380.00 +- 288.00 243010.00 +- 12780.00 10770.00 +- 588.80 <62.30


Powdered Ocean Sediment Calibration Sample Cross Comparison Sample B

Mar 2, 2020 (ppb or ppm) 911.25 ppb +- 24.11 ppb 1222.29 ppb +- 177.71 ppb 1111.44 ppb +- 77.56 ppb 3045.48 ppb +- 70.85 ppb 7849.22 ppm +- 412.79 ppm








SNOLAB 131 Lake in City of Greater Sudbury, Ontario 985.2 g 21.735 Jun 30, 2020 (mBq/kg) 0.34 +- 0.30 <13.93

<0.31

<0.42

10.53 +- 4.25 0.46 +- 0.36 <0.053


Lohi Lake Water Sample collected on October 27, 2019 @ 14:45

Jul 22, 2020 (ppb or ppm) 27.27 ppt +- 24.32 ppt <1.13 ppb

<0.55 ppb

<103.32 ppt

340.22 ppb +- 137.24 ppb








SNOLAB 132 Lake in City of Greater Sudbury, Ontario 686.8 g 11.611 Sep 10, 2020 (mBq/kg) <0.68

<16.48

0.16 +- 0.34 1.30 +- 0.63 42.39 +- 9.84 <0.74

<0.31


Vermilion Lake Water Sample collected on October 09, 2019 @ 14:00

Sep 22, 2020 (ppb or ppm) <55.08 ppt

<1.33 ppb

0.28 ppb +- 0.59 ppb 0.32 ppb +- 0.15 ppb 1.37 ppm +- 0.32 ppm








SNOLAB 133 Lake in City of Greater Sudbury, Ontario 947.3 g 13.527 Oct 6, 2020 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Nepahwin Lake Water Sample collected on September 18, 2020 @ 19:20

Oct 20, 2020 (mBq/kg) 0.40 +- 0.45 <23.53

<0.28

<0.55

93.03 +- 11.25 <0.71

<0.27







(ppm / ppb / ppt) 32.36 ppt +- 36.67 ppt <1.91 ppb

<0.49 ppb

<0.14 ppb

3 ppm +- 0.36 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 25.64 +- 4.33 <0.36




1.01 +- 0.81
















(ppm / ppb / ppt)








0.25 ppb +- 0.2 ppb











SNOLAB 134 Lake in City of Greater Sudbury, Ontario 993.4 g 10.882 Oct 23, 2020 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Lohi Lake Water Sample collected on September 19, 2020 @ 17:00

Nov 3, 2020 (mBq/kg) <0.65

<23.63

<0.39

<0.69

10.58 +- 6.19 1.24 +- 0.55 <0.17







(ppm / ppb / ppt) <52.65 ppt

<1.91 ppb

<0.69 ppb

<0.17 ppb

0.34 ppm +- 0.2 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 26.02 +- 4.718 0.06 +- 0.25


<0.50


















(ppm / ppb / ppt)








<0.12 ppb













SNOLAB 135 Lake in City of Greater Sudbury, Ontario 999.9 g 11.243 Nov 6, 2020 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Kelly Lake Water Sample collected on September 19, 2020 @ 14:10

Nov 17, 2020 (mBq/kg) 2.23 +- 0.57 18.48 +- 23.07 0.28 +- 0.30 0.26 +- 0.66 227.23 +- 19.81 0.57 +- 0.53 <0.30







(ppm / ppb / ppt) 180.39 ppt +- 46.36 ppt 1.5 ppb +- 1.87 ppb 0.49 ppb +- 0.53 ppb 0.06 ppb +- 0.16 ppb 7.34 ppm +- 0.64 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 5.64 +- 3.37 <0.47




2.79 +- 1.23
















(ppm / ppb / ppt)








0.69 ppb +- 0.3 ppb











SNOLAB 136 Lake Bed Sand from Nepahwin Lake inCity of Greater Sudbury, Ontario 611.0 g 2.292 Oct 20, 2020 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Nepahwin Lake Sand Sample collected on September 19, 2020 @ 17:20

Oct 23, 2020 (mBq/kg) 12960.00 +- 286.30 20020.00 +- 2633.00 630.20 +- 34.82 14200.00 +- 381.90 372510.00 +- 19100.00 N/D – No observable signal due to U & Th Interference <35.64







(ppm / ppb / ppt) 1049.76 ppb +- 23.19 ppb 1621.62 ppb +- 213.27 ppb 1109.15 ppb +- 61.28 ppb 3493.2 ppb +- 93.95 ppb 12032.07 ppm +- 616.93 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) N/D – No observable signal due to U & Th Interference N/D – No observable signal due to U & Th Interference


13770.00 +- 411.40
















(ppm / ppb / ppt)








3387.42 ppb +- 101.2 ppb











SNOLAB 137 Lake Bed Sand from Kelly Lake inCity of Greater Sudbury, Ontario 608.9 g 2.971 Nov 3, 2020 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Kelly Lake Sand Sample collected on September 19, 2020 @ 14:12

Nov 6, 2020 (mBq/kg) 16240.00 +- 349.90 26570.00 +- 3004.00 804.90 +- 39.77 18830.00 +- 492.40 429700.00 +- 22020.00 N/D – No observable signal due to U & Th Interference 36.23 +- 30.00





(ppm / ppb / ppt) 1315.44 ppb +- 28.34 ppb 2152.17 ppb +- 243.32 ppb 1416.62 ppb +- 70 ppb 4632.18 ppb +- 121.13 ppb 13879.31 ppm +- 711.25 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) N/D – No observable signal due to U & Th Interference N/D – No observable signal due to U & Th Interference


18010.00 +- 519.50
















(ppm / ppb / ppt)








4430.46 ppb +- 127.8 ppb











SNOLAB 138 Lake Bed Sand from Meatbird Lake in the City of Greater Sudbury, Ontario 610. g 2.603 Nov 17, 2020 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Meatbird Lake Sand Sample collected on October 05, 2020 @ 14:00

Nov 20, 2020 (mBq/kg) 15560.00 +- 340.10 24200.00 +- 3051.00 769.10 +- 40.78 18890.00 +- 500.20 456660.00 +- 23400.00 N/D – No observable signal due to U & Th Interference 12.01 +- 30.08





(ppm / ppb / ppt) 1260.36 ppb +- 27.55 ppb 1960.2 ppb +- 247.13 ppb 1353.62 ppb +- 71.77 ppb 4646.94 ppb +- 123.05 ppb 14750.12 ppm +- 755.82 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) N/D – No observable signal due to U & Th Interference N/D – No observable signal due to U & Th Interference


18140.00 +- 531.30
















(ppm / ppb / ppt)








4462.44 ppb +- 130.7 ppb











SNOLAB 139 McMaster Carr 72.8 g 8.798 Jan 27, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
EPDM Gaskets Water and steam resistant EPDM gasket

Feb 5, 2021 (mBq/kg) 66.97 +- 8.73 <337.30

<5.66

91.98 +- 10.78 5218.50 +- 369.50 <6.08

<3.35



For 1” Tubes,
OD: 1.98”,
ID: 0.90”


(ppm / ppb / ppt) 5.42 ppb +- 0.71 ppb <27.32 ppb

<9.96 ppb

22.63 ppb +- 2.65 ppb 168.56 ppm +- 11.93 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 54.34 +- 39.62 <6.81




85.39 +- 17.49
















(ppm / ppb / ppt)








21.01 ppb +- 4.3 ppb











SNOLAB 140 Viton O-Rings previously used to connect the Liqui-cels to the UPW plant piping 60.3 g 6.789 Feb 5, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Viton Gaskets

Feb 12, 2021 (mBq/kg) 26.22 +- 7.93 166.70 +- 280.10 <5.332

<11.29

974.70 +- 161.60 <6.66

<4.39







(ppm / ppb / ppt) 2.12 ppb +- 0.64 ppb 13.5 ppb +- 22.69 ppb <9.38 ppb

<2.78 ppb

31.48 ppm +- 5.22 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <89.61

<2.51




6.13 +- 11.14
















(ppm / ppb / ppt)








1.51 ppb +- 2.74 ppb











SNOLAB 141 Filters used to filter incoming air to the SNOLAB surface building 287.1 g 4.881 Apr 21, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Camfil Hi-Flow ES Air Filters


Apr 26, 2021 (mBq/kg) 8169.00 +- 223.40 3080.00 +- 3582.00 346.60 +- 114.30 10970.00 +- 322.20 153710.00 +- 7982.00
N/A
35.88 +- 23.63

PN: 2114166SM
Run: 210421
(ppm / ppb / ppt) 661.69 ppb +- 18.1 ppb 249.48 ppb +- 290.14 ppb 610.02 ppb +- 201.17 ppb 888.57 ppb +- 26.1 ppb 4965 ppm +- 257.82 ppm












Results:
7Be:

54Mn




228Ac:
22Na









Filter Type: MERV-A13


(mBq/kg) 7.14E+06 +- 3.58E+05 150.26 +- 35.62


12080.00 +- 477.90 4039.00 +- 218.00













(ppm / ppb / ppt)








978.48 ppb +- 38.71 ppb











SNOLAB 142 Nora vulcanized rubber compound 51.5 g 14.541 May 27, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Norament XP Rubber Flooring

Run: 210527 Jun 11, 2021 (mBq/kg) 1892.00 +- 60.99 4621.00 +- 1441.00 136.90 +- 17.23 3818.00 +- 120.70 26824.00 +- 1486.00 <29.99

<11.76



Nora Systems Inc
Salem, NH 03079


(ppm / ppb / ppt) 153.25 ppb +- 4.94 ppb 374.3 ppb +- 116.72 ppb 240.94 ppb +- 30.32 ppb 939.23 ppb +- 29.69 ppb 866.42 ppm +- 48 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 187.17 +- 139.20 50.54 +- 16.95


3413.00 +- 133.60
















(ppm / ppb / ppt)








839.6 ppb +- 32.87 ppb











SNOLAB 143 Nora vulcanized rubber compound 98.3 g 6.875 Jul 2, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Norament XP Trac Rubber Flooring Type: 5304 “Black Pepper”
Run: 210702 Jul 9, 2021 (mBq/kg) 1891.00 +- 71.22 3301.00 +- 2027.00 127.10 +- 24.61 5237.00 +- 168.20 33242.00 +- 1873.00 <18.57

<25.46



Nora Systems Inc Salem, NH 03079


(ppm / ppb / ppt) 153.17 ppb +- 5.77 ppb 267.38 ppb +- 164.19 ppb 223.7 ppb +- 43.31 ppb 1288.3 ppb +- 41.38 ppb 1073.72 ppm +- 60.5 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <297.30

73.08 +- 23.99


5041.00 +- 199.00
















(ppm / ppb / ppt)








1240.09 ppb +- 48.95 ppb











SNOLAB 144 Lake in City of Greater Sudbury, Ontario 993.6 g 6.972 Sep 10, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Lohi Lake Water Sample collected on September 06, 2021 @ 15:00

Sep 17, 2021 (mBq/kg) 2.19 +- 0.73 <23.73

0.33 +- 0.38 0.83 +- 0.73 6.58 +- 7.34 0.60 +- 0.66 <0.13




Run: 210910
(ppm / ppb / ppt) 0.18 ppb +- 0.06 ppb <1.92 ppb

0.58 ppb +- 0.66 ppb 0.2 ppb +- 0.18 ppb 212.69 ppb +- 237.21 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 9.80 +- 4.641 <0.29




<1.18


















(ppm / ppb / ppt)








<0.29 ppb













SNOLAB 145 Lake in City of Greater Sudbury, Ontario 1023.4 g 6.340 Sep 17, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Nepahwin Lake Water Sample collected on September 05, 2021 @ 19:00

Sep 24, 2021 (mBq/kg) 0.96 +- 0.74 <36.52

<0.32

<0.91

50.75 +- 12.24 <0.42

<0.14





Run: 210917
210921
(ppm / ppb / ppt) 78.14 ppt +- 59.59 ppt <2.96 ppb

<0.56 ppb

<0.22 ppb

1639.13 ppb +- 395.35 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 13.58 +- 5.27 <0.58




<2.29


















(ppm / ppb / ppt)








<0.56 ppb













SNOLAB 146 Lake in City of Greater Sudbury, Ontario 942.3 g 11.097 Oct 8, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Simon Lake Water Sample collected on September 07, 2021 @ 18:00

Oct 19, 2021 (mBq/kg) 0.30 +- 0.57 34.37 +- 23.88 0.38 +- 0.34 0.58 +- 0.70 372.39 +- 28.18 <0.82

<0.23




Run: 211008
(ppm / ppb / ppt) 0.02 ppb +- 0.05 ppb 2.78 ppb +- 1.93 ppb 0.67 ppb +- 0.6 ppb 0.14 ppb +- 0.17 ppb 12.03 ppm +- 0.91 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 11.14 +- 4.24 <0.66




3.15 +- 1.36
















(ppm / ppb / ppt)








0.77 ppb +- 0.34 ppb











SNOLAB 147 Lake in City of Greater Sudbury, Ontario 963.6 g 9.611 Oct 19, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Robinson Lake Water Sample collected on September 18, 2021 @ 12:44

Oct 29, 2021 (mBq/kg) <1.19

20.11 +- 21.07 <0.34

0.39 +- 0.64 54.05 +- 10.03 <1.00

<0.18





Run: 211019
(ppm / ppb / ppt) <0.1 ppb

1.63 ppb +- 1.71 ppb <0.6 ppb

0.1 ppb +- 0.16 ppb 1745.69 ppb +- 323.97 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 9.14 +- 3.72 <0.21




<1.08


















(ppm / ppb / ppt)








<0.27 ppb













SNOLAB 148 Flooring Sample for Surface Labs 24.8 g 3.875 Sep 24, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
BioFloor R10 MICA Flooring Material


Sep 28, 2021 (mBq/kg) 7005.00 +- 250.00 14330.00 +- 3826.00 268.00 +- 54.33 8012.00 +- 319.30 16994.00 +- 1561.00 68.06 +- 68.06 31.03 +- 40.30


Run: 210924
(ppm / ppb / ppt) 567.41 ppb +- 20.25 ppb 1160.73 ppb +- 309.91 ppb 471.68 ppb +- 95.62 ppb 1970.95 ppb +- 78.55 ppb 548.91 ppm +- 50.42 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <735.20

121.27 +- 61.89


7649.000 +- 319.300
















(ppm / ppb / ppt)








1881.65 ppb +- 78.55 ppb











SNOLAB 149 Floor Sample for Surface Labs 35.8 g 2.660 Sep 28, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Floor Tile
Altro Operetta-Quintet		 Altro Operetta Quintet OP2114

Oct 1, 2021 (mBq/kg) 1837.00 +- 97.17 3717.00 +- 1683.00 132.70 +- 25.05 1067.00 +- 88.15 27701.00 +- 2013.00 <46.72

<25.38





Run: 210928
211001
(ppm / ppb / ppt) 148.8 ppb +- 7.87 ppb 301.08 ppb +- 136.32 ppb 233.55 ppb +- 44.09 ppb 262.48 ppb +- 21.68 ppb 894.74 ppm +- 65.02 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 121.56 +- 232.30 30.31 +- 31.25


1146.00 +- 137.50
















(ppm / ppb / ppt)








281.92 ppb +- 33.83 ppb











SNOLAB 150 Lake in City of Greater Sudbury, Ontario 557.1 g 7.840 Nov 5, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Vermilion Lake Water Sample collected on September 18, 2021 @ 20:52

Nov 13, 2021 (mBq/kg) 3.30 +- 0.99 18.77 +- 33.77 <0.87

<1.42

45.43 +- 13.83 1.32 +- 0.98 <0.19




Run: 211105
(ppm / ppb / ppt) 0.27 ppb +- 0.08 ppb 1.52 ppb +- 2.74 ppb <1.53 ppb

<0.35 ppb

1.47 ppm +- 0.45 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 5.14 +- 5.50 <0.30




<1.64


















(ppm / ppb / ppt)








<0.4 ppb













SNOLAB 151 Lake in City of Greater Sudbury, Ontario 910.05 g 6.896 Dec 10, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Ramsey Lake Water Sample collected on September 22, 2021 @ 17:00
Run: 211210
211213		 Dec 17, 2021 (mBq/kg) 0.88 +- 0.58 3.02 +- 15.97 <0.38

<1.24

45.47 +- 10.63 <0.83

<0.13







(ppm / ppb / ppt) 0.07 ppb +- 0.05 ppb 0.24 ppb +- 1.29 ppb <0.67 ppb

<0.31 ppb

1468.74 ppb +- 343.35 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 7.28 +- 3.76 <0.19




1.01 +- 0.94
















(ppm / ppb / ppt)








0.25 ppb +- 0.23 ppb











SNOLAB 152 Lake in City of Greater Sudbury, Ontario 988.55 g 14.764 Dec 23, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
St. Charles Lake Water Sample collected on September 27, 2021 @ 14:10
Run: 211223
220103		 Jan 7, 2022 (mBq/kg) 0.10 +- 0.33 <15.47

<0.32

<0.46

61.19 +- 8.18 0.22 +- 0.39 <0.27






(ppm / ppb / ppt) 0.01 ppb +- 0.03 ppb <1.25 ppb

<0.56 ppb

<0.11 ppb

1976.31 ppb +- 264.15 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 6.54 +- 2.43 0.26 +- 0.17


<1.36


















(ppm / ppb / ppt)








<0.33 ppb













SNOLAB 153 E. James Recycled Rubber from Grainger Canada 55.1 g 6.166 Oct 29, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Recycled Rubber Material Commercial Grade, 100% recycled
Run
211029
211101
211102		 Nov 5, 2021 (mBq/kg) 658.80 +- 36.11 1990.00 +- 867.80 62.10 +- 10.60 811.20 +- 45.87 15731.00 +- 1017.00 29.95 +- 16.86 <11.89



Course Finished ASTM D2000 GE306
Black-Speckled


(ppm / ppb / ppt) 53.36 ppb +- 2.92 ppb 161.19 ppb +- 70.29 ppb 109.3 ppb +- 18.66 ppb 199.56 ppb +- 11.28 ppb 508.11 ppm +- 32.85 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 159.10 +- 111.10 33.04 +- 13.64


812.00 +- 64.87
















(ppm / ppb / ppt)








199.75 ppb +- 15.96 ppb











SNOLAB 154 Lake in City of Greater Sudbury, Ontario 927.55 g 6.778 Jan 7, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Laurentian Lake Water Sample collected on October 7, 2021 @ 17:54
Run: 220107 Jan 14, 2022 (mBq/kg) 0.96 +- 0.61 <28.10

<0.38

<0.60

75.44 +- 13.11 <0.97

<0.24






(ppm / ppb / ppt) 0.08 ppb +- 0.05 ppb <2.28 ppb

<0.67 ppb

<0.15 ppb

2436.78 ppb +- 423.45 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 5.31 +- 3.46 0.48 +- 0.35


<2.47


















(ppm / ppb / ppt)








<0.61 ppb













SNOLAB 155 Concrete Block used for wall construction at SNOLAB UG Lab 1349.3 g 2.962 Dec 7, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Concrete Block

Run: 211207
21120701		 Dec 10, 2021 (mBq/kg) 21130.00 +- 416.50 34480.00 +- 2652.00 1088.00 +- 34.73 24180.00 +- 595.50 478900.00 +- 24480.00 33.30 +- 28.03 <17.11







(ppm / ppb / ppt) 1711.53 ppb +- 33.74 ppb 2792.88 ppb +- 214.81 ppb 1914.88 ppb +- 61.12 ppb 5948.28 ppb +- 146.49 ppb 15468.47 ppm +- 790.7 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <411.90

305.62 +- 31.27


22960.00 +- 586.80
















(ppm / ppb / ppt)








5648.16 ppb +- 144.35 ppb











SNOLAB 156 Sample of rock collected from the wall near the Bottom Access Ramp 1366.0 g 3.029 Dec 17, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Rock Sample

Run: 211217 Dec 20, 2021 (mBq/kg) 14210.00 +- 280.70 25230.00 +- 1973.00 732.20 +- 25.67 22360.00 +- 541.40 31813.00 +- 16270.00 <16.07

8.79 +- 15.34





(ppm / ppb / ppt) 1151.01 ppb +- 22.74 ppb 2043.63 ppb +- 159.81 ppb 1288.67 ppb +- 45.18 ppb 5500.56 ppb +- 133.18 ppb 1027.56 ppm +- 525.52 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 218.55 +- 169.20 253.43 +- 24.79


20190.000 +- 509.700
















(ppm / ppb / ppt)








4966.74 ppb +- 125.39 ppb











SNOLAB 157 Sample of rock collected from the wall near the Emergency Machine Shop Exit 1491.0 g 2.864 Dec 20, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Rock Sample

Run: 211220 Dec 23, 2021 (mBq/kg) 11900.00 +- 237.70 19800.00 +- 1682.00 638.50 +- 23.06 18350.00 +- 446.60 283070.00 +- 14480.00 <18.90

<29.55







(ppm / ppb / ppt) 963.9 ppb +- 19.25 ppb 1603.8 ppb +- 136.24 ppb 1123.76 ppb +- 40.59 ppb 4514.1 ppb +- 109.86 ppb 9143.16 ppm +- 467.7 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 317.08 +- 156.30 205.41 +- 22.01


17470.000 +- 440.200
















(ppm / ppb / ppt)








4297.62 ppb +- 108.29 ppb











SNOLAB 158 Stonlux SL, Beige (9/27/2021) 59.6 g 3.917 Dec 3, 2021 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Stonhard Stonlux Epoxy Flooring Stonhard, www.stonhard.com
Run: 211203 Dec 7, 2021 (mBq/kg) 4703.00 +- 155.70 14240.00 +- 2620.00 277.10 +- 30.11 1005.00 +- 78.16 169810.00 +- 9051.00 <46.97

21.89 +- 38.50





(ppm / ppb / ppt) 380.94 ppb +- 12.61 ppb 1153.44 ppb +- 212.22 ppb 487.7 ppb +- 52.99 ppb 247.23 ppb +- 19.23 ppb 5484.86 ppm +- 292.35 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 131.63 +- 283.00 66.96 +- 41.46


842.30 +- 144.00
















(ppm / ppb / ppt)








207.21 ppb +- 35.42 ppb











SNOLAB 159 Lake in City of Greater Sudbury, Ontario 899.25 g 13.784 Jan 14, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Kelly Lake Water Sample collected on September 27, 2021 @ 14:30

Jan 28, 2022 (mBq/kg) 1.24 +- 0.47 <16.82

<0.36

<1.06

213.42 +- 17.70 0.87 +- 0.48 <0.31





Run: 220114
(ppm / ppb / ppt) 0.1 ppb +- 0.04 ppb <1.36 ppb

<0.63 ppb

<0.26 ppb

6.89 ppm +- 0.57 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <2.88

<0.70




1.51 +- 0.90
















(ppm / ppb / ppt)








0.37 ppb +- 0.22 ppb











SNOLAB 160
9.5 g 3.944 May 9, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Calibration Sample Wipes for Spectrum Techniques Source Sets

Run: 220509 May 13, 2022 (mBq/kg) <65.19

<6058.00

<132.30

92.74 +- 157.80 1628.40 +- 1101.00 17113.00 +- 1078.00 3158.00 +- 244.50





(ppm / ppb / ppt) <5.28 ppb

<490.7 ppb

<232.85 ppb

22.81 ppb +- 38.82 ppb 52.6 ppm +- 35.56 ppm












Results:
7Be:

54Mn




228Ac:
57Co
133Ba











(mBq/kg) <828.50

49.10 +- 76.74


<313.10

7809.00 +- 526.10 15595.00 +- 999.20










(ppm / ppb / ppt)








<77.02 ppb













SNOLAB 161
245.6 g 3.882 May 13, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Wash Solution for Spectrum Techniques Source Sets


May 17, 2022 (mBq/kg) 3.46 +- 3.18 <172.10

1.79 +- 1.90 2.94 +- 3.54 30.34 +- 38.16 <4.40

<1.62





Run: 22513
(ppm / ppb / ppt) 0.28 ppb +- 0.26 ppb <13.94 ppb

3.15 ppb +- 3.34 ppb 0.72 ppb +- 0.87 ppb 980.08 ppb +- 1232.57 ppb












Results:
7Be:

54Mn




228Ac:
57Co
133Ba











(mBq/kg) 1.54 +- 12.26 1.50 +- 1.37


2.87 +- 4.92 1.63 +- 3.45 <3.56












(ppm / ppb / ppt)








0.71 ppb +- 1.21 ppb











SNOLAB 162
5.395 g 14.270 May 31, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Health Canada
3M BMF Blank Filter

Run: 220531
220608		 Jun 15, 2022 (mBq/kg) <34.25

698.80 +- 798.80 <13.17

<24.62

593.13 +- 387.60 <28.10

<6.18







(ppm / ppb / ppt) <2.77 ppb

56.6 ppb +- 64.7 ppb <23.18 ppb

<6.06 ppb

19.16 ppm +- 12.52 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 171.22 +- 169.60 <7.12




<110.60


















(ppm / ppb / ppt)








<27.21 ppb













SNOLAB 163
4.127 g 9.062 Jun 15, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Health Canada
Hi Q Glass Filter Blank

Run: 220615
220621		 Jun 24, 2022 (mBq/kg) 8562.00 +- 357.40 14240.00 +- 6423.00 332.20 +- 77.83 8705.00 +- 415.60 757780.00 +- 40010.00 <172.20

<285.00







(ppm / ppb / ppt) 693.52 ppb +- 28.95 ppb 1153.44 ppb +- 520.26 ppb 584.67 ppb +- 136.98 ppb 2141.43 ppb +- 102.24 ppb 24476.29 ppm +- 1292.32 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <2253.00

236.1 +- 156.60


9924.00 +- 630.90
















(ppm / ppb / ppt)








2441.3 ppb +- 155.2 ppb











SNOLAB 164 Product Type:
MB40-AP		 2.045 g 14.701 Jun 24, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Health Canada
Superior Felt Polypropylene Blank Filter

Run: 220624
220701
220707
22070701
22070705		 Jul 12, 2022 (mBq/kg) <93.92

<2110.00

<28.67

<73.60

1481.10 +- 1008.00 21.05 +- 83.13 <13.01







(ppm / ppb / ppt) <7.61 ppb

<170.91 ppb

<50.46 ppb

<18.11 ppb

47.84 ppm +- 32.56 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <712.00

<18.23




<162.50


















(ppm / ppb / ppt)








<39.98 ppb













SNOLAB 165 Product Type: MB30AP2 1.671 g 13.541 Jul 12, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Health Canada
AlphaPERM Polypropylene Filter Blank

Run: 220712
220720
220721
22072101		 Jul 26, 2022 (mBq/kg) <89.46

<4250.00

22.87 +- 43.32 <114.50

253.73 +- 1125.00 <47.79

<40.73







(ppm / ppb / ppt) <7.25 ppb

<344.25 ppb

40.25 ppb +- 76.24 ppb <28.17 ppb

8.2 ppm +- 36.34 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <868.60

<54.53




<133.40


















(ppm / ppb / ppt)








<32.82 ppb













SNOLAB 166 Lake in Ladakh, India 218.0 g 11.798 Sep 23, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Khardong Lake (Ladakh) Sample collected on Aug 22 ,2022 @ 13:11 IST
Run: 220923
220928		 Oct 6, 2022 (mBq/kg) 1.96 +- 1.21 54.19 +- 46.58 <1.11

<1.11

12.78 +- 15.54 <1.33

<0.18






(ppm / ppb / ppt) 0.16 ppb +- 0.1 ppb 4.39 ppb +- 3.77 ppb <1.95 ppb

<0.27 ppb

412.73 ppb +- 501.94 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <7.45

0.67 +- 0.56


2.30 +- 2.08
















(ppm / ppb / ppt)








0.57 ppb +- 0.51 ppb











SNOLAB 167 Nubra Valley, Ladakh, India 562.3 g 7.847 Oct 6, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Diskit Gompa Monastery, Nubra Valley Sample collected on Aug 21, 2022 @ 10:35 IST
Run: 221006
221012		 Oct 14, 2022 (mBq/kg) <1.03

45.77 +- 23.33 0.97 +- 0.43 0.62 +- 0.83 63.59 +- 13.33 <0.50

<0.18







(ppm / ppb / ppt) <0.08 ppb

3.71 ppb +- 1.89 ppb 1.71 ppb +- 0.76 ppb 0.15 ppb +- 0.2 ppb 2053.92 ppb +- 430.56 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <5.85

0.33 +- 0.33


0.85 +- 1.03
















(ppm / ppb / ppt)








0.21 ppb +- 0.25 ppb











SNOLAB 168 Ganga River, India 403.4 g 6.736 Oct 14, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Ganga River Water

Run: 221014 Oct 21, 2022 (mBq/kg) <1.89

<88.64

<1.18

<2.15

<43.99

<3.26

<0.35






(ppm / ppb / ppt) <0.15 ppb

<7.18 ppb

<2.08 ppb

<0.53 ppb

<1.42 ppm














Results:
7Be:

54Mn




228Ac:















(mBq/kg) <28.37

<1.13




<1.70


















(ppm / ppb / ppt)








<0.42 ppb













SNOLAB 169 Lake in City of Greater Sudbury, Ontario 997.1 g 6.979 Nov 9, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Nepahwin Lake Water Sample collected on Sept 4, 2022 @ 07:45
Run: 221109 Nov 16, 2022 (mBq/kg) 1.15 +- 0.54 <17.91

<0.52

<0.55

73.49 +- 12.39 <1.40

<0.18







(ppm / ppb / ppt) 0.09 ppb +- 0.04 ppb <1.45 ppb

<0.92 ppb

<0.14 ppb

2.37 ppm +- 0.4 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 14.76 +- 4.27 <0.27




<0.86


















(ppm / ppb / ppt)








<0.21 ppb













SNOLAB 170 Lake in City of Greater Sudbury, Ontario 959.6 g 8.409 Nov 30, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Richard Lake Water Sample collected on Sept 6, 2022 @ 18:15
Run: 221130
221201
221207		 Dec 9, 2022 (mBq/kg) 0.54 +- 0.49 <35.11

<0.57

<1.29

27.80 +- 7.97 0.84 +- 0.54 <0.19







(ppm / ppb / ppt) 0.04 ppb +- 0.04 ppb <2.84 ppb

<1 ppb

<0.32 ppb

0.9 ppm +- 0.26 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 2.71 +- 2.79 0.32 +- 0.25


<0.98


















(ppm / ppb / ppt)








<0.24 ppb













SNOLAB 171 Lake in City of Greater Sudbury, Ontario 998.0 g 9.930 Dec 9, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Silver Lake Water Sample collected on Sept 3, 2022 @ 18:00
Run: 221209 Dec 19, 2022 (mBq/kg) 0.52 +- 0.41 <16.94

<0.48

<0.64

40.00 +- 8.06 <0.34

<0.084







(ppm / ppb / ppt) 0.04 ppb +- 0.03 ppb <1.37 ppb

<0.84 ppb

<0.16 ppb

1.29 ppm +- 0.26 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 7.58 +- 2.92 <0.36




<0.70


















(ppm / ppb / ppt)








<0.17 ppb













SNOLAB 172 Lake in City of Greater Sudbury, Ontario 983.7 g 14.854 Jan 18, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
St Charles Lake Water Sample collected on Sept 4, 2022 @ 15.32

Feb 2, 2023 (mBq/kg) 0.40 +- 0.36 <18.16

<0.50

<0.60

51.66 +- 7.61 0.83 +- 0.44 <0.24







(ppm / ppb / ppt) 0.03 ppb +- 0.03 ppb <1.47 ppb

<0.88 ppb

<0.15 ppb

1668.52 ppb +- 245.64 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <3.64

<0.28




0.62 +- 0.57
















(ppm / ppb / ppt)








0.15 ppb +- 0.14 ppb











SNOLAB 173
902.4 g 7.784 Feb 13, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Etching Cart: Peroxide/Suphuric Acid Soak Solution from Fibergrate Sample

Run: 230213 Feb 21, 2023 (mBq/kg) 1.87 +- 0.57 <22.15

<0.31

<0.40

<5.42

<0.56

<0.32







(ppm / ppb / ppt) 151.47 ppt +- 45.93 ppt <1.79 ppb

<0.55 ppb

<0.1 ppb

<175.07 ppb














Results:
7Be:

54Mn




228Ac:















(mBq/kg) 2.85 +- 2.70 <0.38




<1.17


















(ppm / ppb / ppt)








<0.29 ppb













SNOLAB 174 The sample was etched in the solution from Sample 173 85.183 g 3.041 Feb 21, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Acid-Resistant Fibregrate (Red) Sample

Run: 230221 Feb 24, 2023 (mBq/kg) 10840.00 +- 291.50 25740.00 +- 2815.00 676.90 +- 54.36 12520.00 +- 308.30 16116.00 +- 1220.00 <64.93

32.54 +- 30.18





(ppm / ppb / ppt) 878.04 ppb +- 23.61 ppb 2084.94 ppb +- 228.02 ppb 1191.34 ppb +- 95.67 ppb 3079.92 ppb +- 75.84 ppb 520.55 ppm +- 39.41 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <681.10

184.45 +- 52.73


13050.00 +- 472.60
















(ppm / ppb / ppt)








3210.3 ppb +- 116.26 ppb











SNOLAB 175
1014.2 g 6.979 Mar 28, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Ion Exchange Beads

Run: 230328 Apr 4, 2023 (mBq/kg) 0.80 +- 0.80 <24.75

<0.49

<1.23

91.78 +- 16.42 <1.53

<0.19







(ppm / ppb / ppt) 64.52 ppt +- 64.56 ppt <2 ppb

<0.86 ppb

<0.3 ppb

2.96 ppm +- 0.53 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 5.73 +- 4.31 <0.37




<2.51


















(ppm / ppb / ppt)








<0.62 ppb













SNOLAB 176 Frito-Lay Canada 235.6 g 2.882 May 9, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Doritos Sweet Chili Heat Tortilla Chips

Run: 250509 May 12, 2023 (mBq/kg) 85.62 +- 17.88 <635.30

4.81 +- 9.54 <13.86

107060.00 +- 5624.00 <16.08

<39.26







(ppm / ppb / ppt) 6.94 ppb +- 1.45 ppb <51.46 ppb

8.46 ppb +- 16.8 ppb <3.41 ppb

3458.04 ppm +- 181.66 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <243.60

<20.71




<90.61


















(ppm / ppb / ppt)








<22.29 ppb













SNOLAB 177 Sample from TAD Expansion Project 547.5 g 4.721 May 24, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Two-part Slow Curing Grout

Run: 230524 May 29, 2023 (mBq/kg) 12200.00 +- 243.60 14230.00 +- 1229.00 618.60 +- 21.63 740.10 +- 34.12 11482.00 +- 644.00 <11.03

<10.41







(ppm / ppb / ppt) 988.2 ppb +- 19.73 ppb 1152.63 ppb +- 99.55 ppb 1088.74 ppb +- 38.07 ppb 182.06 ppb +- 8.39 ppb 370.87 ppm +- 20.8 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <236.80

22.39 +- 13.17


692.40 +- 52.73
















(ppm / ppb / ppt)








170.33 ppb +- 12.97 ppb











SNOLAB 178 Sample from TAD Expansion Project 463.0 g 3.923 May 29, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Two-part Fast Curing Grout

Run: 230529 Jun 2, 2023 (mBq/kg) 13320.00 +- 268.60 14950.00 +- 1394.00 686.10 +- 24.82 849.90 +- 40.86 12781.00 +- 729.60 <9.87

<17.02







(ppm / ppb / ppt) 1078.92 ppb +- 21.76 ppb 1210.95 ppb +- 112.91 ppb 1207.54 ppb +- 43.68 ppb 209.08 ppb +- 10.05 ppb 412.83 ppm +- 23.57 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 126.33 +- 142.40 <17.71




849.90 +- 40.86
















(ppm / ppb / ppt)








209.08 ppb +- 10.05 ppb











SNOLAB 179 Sample from TAD Expansion Project 463.3 g 3.096 Jun 2, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Norite Rock

Run: 230602 Jun 5, 2023 (mBq/kg) 4308.00 +- 112.40 7885.00 +- 1483.00 225.20 +- 21.27 6490.00 +- 186.50 121780.00 +- 6301.00 <22.21

<24.43







(ppm / ppb / ppt) 348.95 ppb +- 9.1 ppb 638.69 ppb +- 120.12 ppb 396.35 ppb +- 37.44 ppb 1596.54 ppb +- 45.88 ppb 3933.49 ppm +- 203.52 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) <268.20

66.59 +- 22.69


6377.00 +- 210.60
















(ppm / ppb / ppt)








1568.74 ppb +- 51.81 ppb











SNOLAB 180 Sample from TAD Expansion Project 136.2 g 3.900 Jun 5, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Cured Shotcrete

Run: 230605 Jun 9, 2023 (mBq/kg) 18160.00 +- 410.20 45630.00 +- 4058.00 887.80 +- 49.13 32430.00 +- 828.70 37050.00 +- 19080.00 151.81 +- 63.39 <47.80







(ppm / ppb / ppt) 1470.96 ppb +- 33.23 ppb 3696.03 ppb +- 328.7 ppb 1562.53 ppb +- 86.47 ppb 7977.78 ppb +- 203.86 ppb 1196.72 ppm +- 616.28 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 884.52 +- 466.50 370.09 +- 63.00


31970.00 +- 866.40
















(ppm / ppb / ppt)








7864.62 ppb +- 213.13 ppb











SNOLAB 181 Filters for the Hi-Q High Volume Air Sampler 5.815 g 21.319 Jun 13, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Blank Air Filter Media Received from Health Canada (2 filters) Run: 230613
230614
230620		 Jul 5, 2023 (mBq/kg) <44.73

<874.10

<29.98

<80.98

<820.90

<92.29

<7.31







(ppm / ppb / ppt) <3.62 ppb

<70.8 ppb

<52.76 ppb

<19.92 ppb

<26.52 ppm














Results:
7Be:

54Mn




228Ac:















(mBq/kg) <320.50

13.03 +- 17.85


88.76 +- 64.07
















(ppm / ppb / ppt)








21.83 ppb +- 15.76 ppb











SNOLAB 182 Lake in City of Greater Sudbury, Ontario 990.8 g 6.979 Oct 18, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
St Charles Lake Water Sample collected on Oct 1, 2023
Run: 231018
23101801
231023
231024		 Oct 26, 2023 (mBq/kg) 1.19 +- 0.56 <20.58

<0.47

1.43 +- 0.72 45.41 +- 10.03 0.21 +- 0.50 <0.23





23102401
231025
(ppm / ppb / ppt) 0.1 ppb +- 0.05 ppb <1.67 ppb

<0.83 ppb

0.35 ppb +- 0.18 ppb 1466.71 ppb +- 323.97 ppb












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 5.52 +- 3.24 <0.26




<1.02


















(ppm / ppb / ppt)








<0.25 ppb













SNOLAB 183 Lake in City of Greater Sudbury, Ontario 992.2 g 9.444 Oct 26, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Panache Lake Water Sample collected on Sept 9, 2023
Run: 231026
23102601
231028
231029
231030		 Nov 5, 2023 (mBq/kg) <0.72

<17.64

<0.30

0.19 +- 0.54 8.60 +- 5.54 1.07 +- 0.51 <0.21





231031
231101
231102
231103
(ppm / ppb / ppt) <0.06 ppb

<1.43 ppb

<0.53 ppb

0.05 ppb +- 0.13 ppb 0.28 ppm +- 0.18 ppm












Results:
7Be:

54Mn




228Ac:















(mBq/kg) 8.59 +- 3.06 <0.26




<1.43


















(ppm / ppb / ppt)








<0.35 ppb













SNOLAB 184 Lake in City of Greater Sudbury, Ontario 1000.3 g 10.833 Nov 5, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Lohi Lake Water Sample collected on Sept 10, 2023
Run: 231105 Nov 16, 2023 (mBq/kg) <0.48

<21.59

<0.25

<0.36

18.38 +- 6.14 0.24 +- 0.43 <0.12







(ppm / ppb / ppt) <0.04 ppb

<1.75 ppb

<0.44 ppb

<0.09 ppb

593.64 ppb +- 198.19 ppb












Results:
7Be:

54Mn




228Ac















(mBq/kg) 10.75 +- 2.94 <0.45




<1.57


















(ppm / ppb / ppt)








<0.39 ppb













SNOLAB 185 Lake in City of Greater Sudbury, Ontario 1005.5 g 12.902 Nov 16, 2023 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
McCharles Lake / Vermilion River Sample collected on Sept 9, 2023
Run: 231116 Nov 29, 2023 (mBq/kg) 0.24 +- 0.35 <30.64

<0.47

<0.67

34.15
6.69 1.08 +- 0.46 <0.30







(ppm / ppb / ppt) 0.02 ppb +- 0.03 ppb <2.48 ppb

<0.83 ppb

<0.16 ppb

1.1 ppm +- 0.22 ppm













Results:
7Be:

54Mn




228Ac















(mBq/kg) 3.66 +- 2.37 <0.27




<0.66


















(ppm / ppb / ppt)








<0.16 ppb













SNOLAB 186 Lake in City of Greater Sudbury, Ontario 991.4 g 6.654 Feb 9, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Ramsey Lake Water Sample collected on Aug 20, 2023
Run: 240209
240210
24021001		 Feb 16, 2024 (mBq/kg) <0.70

<27.08

<0.37

<0.65

42.79 +- 10.10 <1.36

<0.10







(ppm / ppb / ppt) <56.7 ppt

<2.19 ppb

<0.65 ppb

<0.16 ppb

1382.15 ppb +- 326.23 ppb













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 4.17 +- 3.24 <0.45




<1.64


















(ppm / ppb / ppt)








<0.4 ppb













SNOLAB 187 Lake in City of Greater Sudbury, Ontario 1007.2 g 9.944 Feb 16, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Simon Lake Water Sample collected on Sept 9, 2023

Feb 26, 2024 (mBq/kg) 1.99 +- 0.57 42.28 +- 23.36 <0.33

<1.14

292.76 +- 23.22 0.55 +- 0.53 <0.30





Run: 240216
(ppm / ppb / ppt) 0.16 ppb +- 0.05 ppb 3.42 ppb +- 1.89 ppb <0.58 ppb

<0.28 ppb

9.46 ppm +- 0.75 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) <2.86

<0.65




3.68 +- 1.23
















(ppm / ppb / ppt)








0.9 ppb +- 0.3 ppb











SNOLAB 188 Lake in City of Greater Sudbury, Ontario 1018.5 g 7.882 Apr 11, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Nepahwin Lake Water Sample collected on Sep 9, 2023
Run: 240411 Apr 19, 2024 (mBq/kg) 1.01 +- 0.44 <38.53

<0.43

1.29 +- 0.58 56.79 +- 10.35 <0.64

<0.11







(ppm / ppb / ppt) 81.73 ppt +- 35.5 ppt <3.12 ppb

<0.76 ppb

0.32 ppb +- 0.14 ppb 1.83 ppm +- 0.33 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) <0.39

<0.42




0.68 +- 0.72
















(ppm / ppb / ppt)








0.17 ppb +- 0.18 ppb











SNOLAB 189 Lake in City of Greater Sudbury, Ontario 1002.4 g 11.882 Apr 25, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Silver Lake Water Sample collected on Sept 10, 2023

May 7, 2024 (mBq/kg) 0.89 +- 0.41 <17.32

0.21 +- 0.25 0.71 +- 0.55 41.19 +- 7.53 <1.17

<0.11





Run: 240425
(ppm / ppb / ppt) 72.16 ppt +- 33.29 ppt <1.4 ppb

0.38 ppb +- 0.43 ppb 0.17 ppb +- 0.13 ppb 1.33 ppm +- 0.24 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) <2.32

<0.25




2.64 +- 0.91
















(ppm / ppb / ppt)








0.65 ppb +- 0.22 ppb











SNOLAB 190 Sample collected from Air Sampler Station 4.233 g 7.875 Jan 17, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Air Filter Sample Sample collected on Jan 09, 2024
Run: 240117 Jan 25, 2024 (mBq/kg) 1004.00 +- 210.10 <7825.00

<389.20

966.70 +- 246.50 12097.00 +- 2169.00 <231.40

<47.51



(Installed on Jan 02, 2024)


(ppm / ppb / ppt) 81.32 ppb +- 17.02 ppb <633.83 ppb

<684.99 ppb

237.81 ppb +- 60.64 ppb 390.73 ppm +- 70.06 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 4.58E+06 +- 2.55E+05 <118.00




387.70 +- 265.50
















(ppm / ppb / ppt)








95.37 ppb +- 65.31 ppb











SNOLAB 191 Colour: Silver Gray 85.4 g 5.743 Apr 19, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Stonclad/Stonkote Double Coated Flooring Man. Date: 5/11/23

Apr 25, 2024 (mBq/kg) 2725.00 +- 78.34 6030.00 +- 959.70 144.50 +- 12.72 1696.00 +- 65.86 37552.00 +- 2052.00 15.56 +- 17.23 <12.50



Stonhard www.stonhard.com
Run: 240419
240422
(ppm / ppb / ppt) 220.73 ppb +- 6.35 ppb 488.43 ppb +- 77.74 ppb 254.32 ppb +- 22.39 ppb 417.22 ppb +- 16.2 ppb 1212.93 ppm +- 66.28 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 177.07 +- 127.90 22.626 +- 15.61


1475.00 +- 80.62
















(ppm / ppb / ppt)








362.85 ppb +- 19.83 ppb











SNOLAB 192 Steel Gray 11/3/20 4.9 g 13.951 May 7, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Stonhard Stonseal PA7 www.stonhard.com
Run: 240507 May 21, 2024 (mBq/kg) 2118.00 +- 119.60 2786.00 +- 2575.00 63.99 +- 31.95 474.80 +- 86.81 139990.00 +- 8391.00 <113.80

<49.24







(ppm / ppb / ppt) 171.56 ppb +- 9.69 ppb 225.67 ppb +- 208.58 ppb 112.62 ppb +- 56.23 ppb 116.8 ppb +- 21.36 ppb 4521.68 ppm +- 271.03 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) <339.30

<52.63




388.50 +- 159.10
















(ppm / ppb / ppt)








95.57 ppb +- 39.14 ppb











SNOLAB 193 Ultrasonic Cleaner Solution 1159.9 g 12.680 May 21, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Crystal Clear Concentrate


Jun 3, 2024 (mBq/kg) 44.76 +- 1.86 205.00 +- 45.72 4.13 +- 0.58 55.25 +- 2.44 1560.20 +- 86.32 0.16 +- 0.75 <0.65



https://crystalelectronics.ca/
Run: 240521
240528
(ppm / ppb / ppt) 3.63 ppb +- 0.15 ppb 16.61 ppb +- 3.7 ppb 7.28 ppb +- 1.02 ppb 13.59 ppb +- 0.6 ppb 50.39 ppm +- 2.79 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 3.24 +- 5.27 0.77 +- 0.67


80.80 +- 3.99
















(ppm / ppb / ppt)








19.88 ppb +- 0.98 ppb











SNOLAB 194 Lake in City of Greater Sudbury, Ontario 979.9 g 10.750 Aug 16, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Nepahwin Lake Water Sample collected on Aug 8, 2024
Run: 240816 Aug 27, 2024 (mBq/kg) <0.68

<25.23

<0.33

1.82 +- 0.61 80.07 +- 10.71 0.08 +- 0.44 <0.15







(ppm / ppb / ppt) <55.08 ppt

<2.04 ppb

<0.58 ppb

0.45 ppb +- 0.15 ppb 2.59 ppm +- 0.35 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 15.78 +- 3.75 0.02 +- 0.19


<1.01


















(ppm / ppb / ppt)








<0.25 ppb













SNOLAB 195 Lake in City of Greater Sudbury, Ontario 1010.4 g 19.860 Aug 27, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Simon Lake Water Sample collected on Aug 11, 2024
Run: 240827 Sep 16, 2024 (mBq/kg) 1.54 +- 0.38 20.97 +- 15.61 0.65 +- 0.22 <0.32

236.77 +- 16.64 0.04 +- 0.35 <0.17







(ppm / ppb / ppt) 0.12 ppb +- 0.03 ppb 1.7 ppb +- 1.26 ppb 1.14 ppb +- 0.38 ppb <0.08 ppb

7.65 ppm +- 0.54 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 4.76 +- 2.28 <0.39




3.15 +- 0.80
















(ppm / ppb / ppt)








0.78 ppb +- 0.2 ppb











SNOLAB 196 Lake in City of Greater Sudbury, Ontario 1005.8 g 8.569 Sep 16, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
McCharles Lake / Vermilion River Water Sample collected on Aug 11, 2024
Run: 240916
240920		 Sep 25, 2024 (mBq/kg) 0.49 +- 0.43 <18.37

<0.32

<0.97

28.66 +- 7.65 0.69 +- 0.52 <0.16







(ppm / ppb / ppt) 39.48 ppt +- 34.83 ppt <1.49 ppb

<0.56 ppb

<0.24 ppb

0.93 ppm +- 0.25 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 5.98 +- 2.90 <0.13




<1.28


















(ppm / ppb / ppt)








<0.31 ppb













SNOLAB 197 Lake in City of Greater Sudbury, Ontario 984.9 g 6.694 Oct 24, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Robinson Lake Water Sample collected on Sep 9, 2024
Run: 241024
241030		 Oct 31, 2024 (mBq/kg) 0.54 +- 0.49 <18.75

0.15 +- 0.32 <1.29

61.49 +- 12.24 <0.44

<0.25







(ppm / ppb / ppt) 44.02 ppt +- 39.72 ppt <1.52 ppb

0.27 ppb +- 0.56 ppb <0.32 ppb

1.99 ppm +- 0.4 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 0.93 +- 3.27 0.18 +- 0.29


0.56 +- 0.80
















(ppm / ppb / ppt)








0.14 ppb +- 0.2 ppb











SNOLAB 198 Lake in City of Greater Sudbury, Ontario 1002.6 g 6.965 Oct 31, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Panache Lake Water Sample collected on Aug 11, 2024
Run: 241031 Nov 7, 2024 (mBq/kg) <0.44

7.02 +- 21.21 <0.25

<1.28

25.43 +- 8.22 0.27 +- 0.57 <0.16







(ppm / ppb / ppt) <35.64 ppt

0.57 ppb +- 1.72 ppb <0.44 ppb

<0.31 ppb

0.82 ppm +- 0.27 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 7.24 +- 3.46 <0.15




<1.83


















(ppm / ppb / ppt)








<0.45 ppb













SNOLAB 199 Lake in City of Greater Sudbury, Ontario 997.6 g 7.757 Nov 7, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Long Lake Water Sample collected on Aug 11, 2024
Run: 241107
241113		 Nov 15, 2024 (mBq/kg) 0.50 +- 0.48 6.36 +- 18.01 0.10
0.28 0.99 +- 0.65 24.51 +- 7.85 <0.77

<0.26







(ppm / ppb / ppt) 40.4 ppt +- 39.18 ppt 0.52 ppb +- 1.46 ppb 0.17 ppb +- 0.48 ppb 0.24 ppb +- 0.16 ppb 0.79 ppm +- 0.25 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 4.19 +- 3.24 <0.22




0.13 +- 0.69
















(ppm / ppb / ppt)








0.03 ppb +- 0.17 ppb











SNOLAB 200 Lake in City of Greater Sudbury, Ontario 999.8 g 10.889 Nov 15, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
St. Charles Lake Water Sample collected on Sep 9, 2024
Run: 241115 Nov 26, 2024 (mBq/kg) <0.27

<15.99

0.44 +- 0.25 <0.53

49.36 +- 8.37 0.82 +- 0.78 <0.12







(ppm / ppb / ppt) <21.87 ppt

<1.3 ppb

0.78 ppb +- 0.45 ppb <0.13 ppb

1.59 ppm +- 0.27 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 2.03 +- 2.49 0.05 +- 0.20


<0.53


















(ppm / ppb / ppt)








<0.13 ppb













SNOLAB 201 Lake in City of Greater Sudbury, Ontario 1014.1 g 6.903 Nov 26, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Silver Lake Water Sample collected on Aug 11, 2024
Run: 241126 Dec 3, 2024 (mBq/kg) 0.56 +- 0.51 <16.87

<0.32

0.27 +- 0.65 41.42 +- 9.68 1.63 +- 0.70 <0.22







(ppm / ppb / ppt) 0.05 ppb +- 0.04 ppb <1.37 ppb

<0.56 ppb

0.07 ppb +- 0.16 ppb 1.34 ppm +- 0.31 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) <4.55

<0.28




2.73 +- 1.03
















(ppm / ppb / ppt)








0.67 ppb +- 0.25 ppb











SNOLAB 202 Lake in City of Greater Sudbury, Ontario 1046.9 g 6.951 Dec 3, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Richard Lake Water Lake in City of Greater Sudbury, Ontario
Run: 241203 Dec 10, 2024 (mBq/kg) 0.91 +- 0.48 <24.73

0.37 +- 0.29 <0.73

21.65 +- 7.65 0.10 +- 0.48 <0.14







(ppm / ppb / ppt) 0.07 ppb +- 0.04 ppb <2 ppb

0.66 ppb +- 0.51 ppb <0.18 ppb

0.7 ppm +- 0.25 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) <5.28

<0.26




0.15 +- 0.65
















(ppm / ppb / ppt)








0.04 ppb +- 0.16 ppb











SNOLAB 203 Lake in City of Greater Sudbury, Ontario 862.4 g 6.785 Mar 17, 2025 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Ramsey Lake Water Sample Collected on Sep 3, 2024
Run: 250317 Mar 24, 2025 (mBq/kg) <0.43

18.07 +- 22.16 <0.54

<1.01

49.03 +- 11.76 <0.42

<0.21







(ppm / ppb / ppt) <34.83 ppt

1.46 ppb +- 1.79 ppb <0.95 ppb

<0.25 ppb

1.58 ppm +- 0.38 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 3.15 +- 3.57 0.20 +- 0.33


<0.98


















(ppm / ppb / ppt)








<0.24 ppb













SNOLAB 204 Sample Collected on November 10, 2024 907.1 g 8.041 Mar 24, 2025 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Charasa, Nubra, Ladakh Water Sample

Run: 250324 Apr 2, 2025 (mBq/kg) 7.17 +- 0.95 164.40 +- 39.35 4.33 +- 0.56 2.78 +- 0.92 390.37 +- 31.16 <0.51

<0.29







(ppm / ppb / ppt) 0.58 ppb +- 0.08 ppb 13.32 ppb +- 3.19 ppb 7.62 ppb +- 0.99 ppb 0.68 ppb +- 0.23 ppb 12.61 ppm +- 1.01 ppm













Results:
7Be:

54Mn




228Ac:















(mBq/kg) 2.71 +- 3.98 <0.57




8.18 +- 1.89
















(ppm / ppb / ppt)








2.01 ppb +- 0.46 ppb











In Progress and To Be Measured:



























Sample Description Manufacturer Mass (g) Live Time (days) Counting Dates
(if applicable)






















Next Sample



Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments




(mBq/kg)


























(ppm / ppb / ppt)



























Results:
7Be:

54Mn




228Ac:















(mBq/kg)




























(ppm / ppb / ppt)