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:

234Th: 63.29 and 92.59 keV
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: 277.371, 583.19, 860.557 and 2614.53 keV,

228Ac: 209.253, 338.320, 463,004, 911.21, 964.766 and 968.971 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

Background runs for the Lively Detector

If a measurement in the signal region is below the sideband regions then the 90% confidence limit is calculated.

Sample Description

Manufacturer

Mass (g)

Live Time (days)

Run Numbers

Counting Dates
(if applicable)

Background 1

171.327

Mar 29, 2019

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Completely Empty Detector

Jan 20, 2020

(mBq)

1.201

0.053

2.58

0.40

0.110

0.015

1.074

0.058

4.97

0.45

0.024

0.021

0.118

0.018

Results:

210Pb:

7Be:

54Mn

228Ac:

210Po:

(mBq)

289.25

31.53

<0.26

0.024

0.021

1.305

0.099

<2629.00

Background 2

55.461

200324
200430

Mar 24, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Completely Empty Detector

May 19, 2020

(mBq)

1.243

0.083

3.02

0.86

0.161

0.029

1.38

0.10

8.35

0.94

<0.043

0.111

0.031

Results:

210Pb:

7Be:

54Mn

228Ac:

210Po:

(mBq)

554.52

80.36

0.74

0.30

0.020

0.035

2.22

0.18

<4463.00

Combined Background

Combined Backgrounds of runs CW1

171.327

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

(mBq)

1.201

0.053

2.58

0.40

0.110

0.015

1.074

0.058

4.97

0.45

0.024

0.021

0.118

0.018

Completely Empty Detector

Results:

210Pb:

7Be:

54Mn

228Ac:

210Po:

(mBq)

289.25

31.53

<0.26

0.024

0.021

1.305

0.099

<2629.00

Completed Sample Measurements for the Lively Detector

SNOLAB Measurements:

Sample Description

Mass (g)

Live Time (days)

Run Numbers

Counting Dates
(if applicable)

SNOLAB L01

Lake in City of Greater Sudbury, Ontario

865.8 g

6.854

200120

Jan 20, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Long Lake Water

Sample collected on 2018-10-26 at 13:57

Jan 27, 2020

(mBq/kg)

1.64

0.48

8.86

7.43

<0.30

<0.83

28.78

5.91

0.42

0.26

<0.26

Sample also counted on PGT as SNOLAB 106

(ppm / ppb / ppt)

0.13 ppb

0.04 ppb

0.72 ppb

0.6 ppb

<0.53 ppb

<0.2 ppb

929.69 ppb

190.89 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

1195.30

582.90

0.73

1.60

<0.30

1.09

0.80

(ppm / ppb / ppt)

96.82 ppb

47.21 ppb

0.27 ppb

0.2 ppb

SNOLAB L02

Lake in City of Greater Sudbury, Ontario

1010.10 g

7.826

200127

Jan 27, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Ramsey Lake Water

Sample collected on 2019-10-12 at 11:10

Feb 4, 2020

(mBq/kg)

2.16

0.41

7.41

5.32

<0.19

0.45

0.40

36.83

5.78

0.85

0.26

<0.16

(ppm / ppb / ppt)

0.18 ppb

0.03 ppb

0.6 ppb

0.43 ppb

<0.33 ppb

0.11 ppb

0.1 ppb

1189.61 ppb

186.66 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

2812.70

551.80

5.86

2.05

<0.34

1.90

0.69

(ppm / ppb / ppt)

227.83 ppb

44.7 ppb

0.47 ppb

0.17 ppb

SNOLAB L03

Lake in City of Greater Sudbury, Ontario

939.4 g

6.749

200302

Mar 2, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

St. Charles Lake Water

Sample collected on 2019-10-28 at 13:25

Mar 9, 2020

(mBq/kg)

<0.64

2.84

6.29

0.078

0.164

<0.66

53.12

7.69

0.66

0.28

<0.26

(ppm / ppb / ppt)

<51.84 ppt

0.23 ppb

0.51 ppb

137.28 ppt

288.64 ppt

<162.36 ppt

1715.84 ppb

248.35 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

2664.1

568.60

3.20

2.12

<0.21

0.98

0.77

(ppm / ppb / ppt)

215.79 ppb

46.06 ppb

0.24 ppb

0.19 ppb

SNOLAB L04

Mill Spec: T-27730A

26.0 g

8.826

200204

Feb 4, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Gray Stainless Steel PTFE Thread Seal Tape

DuPont,
Made in USA

Feb 13, 2020

(mBq/kg)

<2.43

<56.97

<2.84

16.69

7.14

<67.07

<1.98

<3.28

Sample consists of tape from three rolls

(ppm / ppb / ppt)

<196.83 ppt

<4.61 ppb

<5 ppb

4.11 ppb

1.76 ppb

<2.17 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<9844.00

<31.64

<2.74

23.21

12.81

(ppm / ppb / ppt)

<797.36 ppb

5.71 ppb

3.15 ppb

SNOLAB L05

Two types of PEX Tubing

249.0 g

7.687

200213
200214

Feb 13, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

UPONOR PEX Tubing

UPONOR-PEX-A
ID: UB66120629B-14350

Feb 21, 2020

(mBq/kg)

22.26

2.21

10.91

19.07

0.34

0.63

14.57

2.25

<9.53

<1.00

<0.33

UPONOR AquaPEX PEX 5106
6DR9 B137 P

(ppm / ppb / ppt)

1.8 ppb

0.18 ppb

0.88 ppb

1.54 ppb

0.6 ppb

1.11 ppb

3.58 ppb

0.55 ppb

<307.82 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

3788.00

1999.00

3.92

5.74

0.95

0.77

2.42

2.70

(ppm / ppb / ppt)

306.83 ppb

161.92 ppb

0.59 ppb

0.66 ppb

SNOLAB L06

Clear Non-Toxic PVC

424.2 g

9.833

200221

Feb 21, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Clear Braided Tubing

With Multiple Textile Braid

Mar 2, 2020

(mBq/kg)

1.56

1.03

14.88

12.64

0.28

0.39

1.89

1.15

17.47

9.42

0.25

0.53

<0.59

Tube ID is ¾”
Hose Label: 201504017

(ppm / ppb / ppt)

0.13 ppb

0.08 ppb

1.21 ppb

1.02 ppb

0.5 ppb

0.69 ppb

0.46 ppb

0.28 ppb

564.35 ppb

304.2 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

4625.60

1175.00

<6.60

<0.67

8.22

2.25

(ppm / ppb / ppt)

374.67 ppb

95.18 ppb

2.02 ppb

0.55 ppb

SNOLAB L07

NIST Sample

28.825 g

14.783

200309

Mar 9, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Powdered Ocean Sediment Calibration Sample

Cross Comparison Sample A

Mar 24, 2020

(mBq)

11550.00

239.20

18850.00

1708.00

658.40

21.46

12140.00

306.60

254450.00

13100.00

7328.50

374.00

<29.27

Sample placed directly on top of the detector

935.55 ppb

19.38 ppb

1526.85 ppb

138.35 ppb

1158.78 ppb

37.77 ppb

2986.44 ppb

75.42 ppb

8218.74 ppm

423.13 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

241Am

(mBq)

<15870.00

<173.90

83.33

22.97

12600.00

328.90

23912.00

1271.00

<1.29 ppm

3099.6 ppb

80.91 ppb

SNOLAB L08

NIST Sample

33.454 g

19.804

200610
200624

Jun 10, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Powdered Ocean Sediment Calibration Sample

Cross Comparison Sample B

Jun 30, 2020

(mBq/kg)

11060.00

219.60

18350.00

1516.00

624.30

18.66

11830.00

290.30

245840.00

12620.00

7125.40

361.40

24.46

15.21

Sample placed directly on top of the detector

(ppm / ppb / ppt)

895.86 ppb

17.79 ppb

1486.35 ppb

122.8 ppb

1098.77 ppb

32.84 ppb

2910.18 ppb

71.41 ppb

7940.63 ppm

407.63 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

241Am

(mBq/kg)

<9704.00

345.63

137.40

69.69

18.18

11810.00

297.30

23964.00

1258.00

(ppm / ppb / ppt)

<0.79 ppm

2905.26 ppb

73.14 ppb

SNOLAB L09

Lake in City of Greater Sudbury, Ontario

953.2 g

21.540

200519

May 19, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Lake Nepahwin Water

Sample collected on 2019-10-7 at 19:00

Jun 10, 2020

(mBq/kg)

<0.23

<7.94

0.074

0.092

<0.34

73.87

5.96

0.47

0.14

<0.083

(ppm / ppb / ppt)

<18.63 ppt

<643.14 ppt

131.08 ppt

161.39 ppt

<83.64 ppt

2386.03 ppb

192.35 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

895.72

329.70

0.56

0.93

0.11

0.10

0.80

0.43

(ppm / ppb / ppt)

72.55 ppb

26.71 ppb

197.49 ppt

105.95 ppt

SNOLAB L10

Lake in City of Greater Sudbury, Ontario

1006.2 g

13.429

201006

Oct 6, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Simon Lake Water

Sample collected on 2020-09-19 at 18:00

Oct 20, 2020

(mBq/kg)

1.34

0.33

12.17

7.80

0.14

0.13

0.35

0.37

314.21

19.92

<0.29

<0.096

(ppm / ppb / ppt)

108.3 ppt

27.01 ppt

985.77 ppt

631.48 ppt

253.79 ppt

229.86 ppt

86.76 ppt

90.72 ppt

10148.98 ppb

643.42 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<330.90

15.77

2.39

<0.25

3.86

0.74

(ppm / ppb / ppt)

<26.8 ppb

949.81 ppt

181.13 ppt

SNOLAB L11

Lake in City of Greater Sudbury, Ontario

984.5 g

11.145

201106

Nov 6, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Ramsey Lake Water

Sample collected on 2020-09-10 at 19:05

Nov 17, 2020

(mBq/kg)

<0.28

8.43

7.09

0.07

0.12

0.51

0.38

45.57

5.92

0.69

0.22

<0.15

(ppm / ppb / ppt)

<22.68 ppt

0.68 ppb

0.57 ppb

126.16 ppt

210.5 ppt

125.29 ppt

92.84 ppt

1471.94 ppb

191.28 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

173.61

306.90

14.50

2.31

<0.18

0.75

0.60

(ppm / ppb / ppt)

14.06 ppb

24.86 ppb

185.24 ppt

147.11 ppt

SNOLAB L12

Lake Bed Sand from Simon Lake in City of Greater Sudbury, Ontario

603.3 g

2.950

201020

Oct 20, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Simon Lake Sand

Sample collected on 2020-09-19 at 18:00

Oct 23, 2020

(mBq/kg)

15460.00

305.10

23380.00

1748.00

765.30

24.65

19680.00

477.00

547470.00

27990.00

N/D – No observable signal due to U & Th Interference

<32.30

(ppm / ppb / ppt)

1252.26 ppb

24.71 ppb

1893.78 ppb

141.59 ppb

1346.93 ppb

43.38 ppb

4841.28 ppb

117.34 ppb

17683.28 ppm

904.08 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

5229.3

9580.00

N/D – No observable signal due to U & Th Interference

16110.00

477.00

(ppm / ppb / ppt)

423.57 ppb

775.98 ppb

3963.06 ppb

117.34 ppb

SNOLAB L13

Lake Bed Sand from Long Lake in City of Greater Sudbury, Ontario

599.0 g

2.944

201103

Nov 3, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Long Lake Sand

Sample collected on 2020-09-27 at 15:00

Nov 6, 2020

(mBq/kg)

12010.00

241.10

18540.00

1439.00

570.00

19.95

11670.00

292.10

397280.00

20320.00

N/D – No observable signal due to U & Th Interference

18.94

17.57

(ppm / ppb / ppt)

972.81 ppb

19.53 ppb

1501.74 ppb

116.56 ppb

1003.2 ppb

35.11 ppb

2870.82 ppb

71.86 ppb

12832.14 ppm

656.34 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

28494.00

8559.00

N/D – No observable signal due to U & Th Interference

10540.00

282.10

(ppm / ppb / ppt)

2308.01 ppb

693.28 ppb

2592.84 ppb

69.4 ppb

SNOLAB L14

Lake Bed Sand from Vermillion Lake in City of Greater Sudbury, Ontario

677.3 g

2.539

201117

Nov 17, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Vermillion Lake Sand

Sample collected on 2020-10-23 at 13:00

Nov 20, 2020

(mBq/kg)

27290.00

543.30

48230.00

3392.00

1549.00

46.64

89330.00

2093.00

791100.00

40770.00

N/D – No observable signal due to U & Th Interference

0.76

29.00

(ppm / ppb / ppt)

2210.49 ppb

44.01 ppb

3906.63 ppb

274.75 ppb

2726.24 ppb

82.09 ppb

21975.18 ppb

514.88 ppb

25552.53 ppm

1316.87 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<17550.00

N/D – No observable signal due to U & Th Interference

78130.000

1829.000

(ppm / ppb / ppt)

<1421.55 ppb

19219.98 ppb

449.93 ppb

SNOLAB L15

1121.8 g

8.728

210127
210202

Jan 27, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Water from broken pipe in Surface Clean Lab

Feb 5, 2021

(mBq/kg)

0.27

0.30

<9.92

<0.22

0.82

0.38

118.02

10.56

0.65

0.24

<0.081

(ppm / ppb / ppt)

0.02 ppb

<0.8 ppb

<0.39 ppb

0.2 ppb

0.09 ppb

3.81 ppm

0.34 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<399.70

<1.90

<0.32

1.25

0.61

(ppm / ppb / ppt)

<32.38 ppb

0.31 ppb

0.15 ppb

SNOLAB L16

Filters used to filter incoming air to the SNOLAB surface building

337.83 g

1.951

210406

Apr 6, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Camfil XH Absolute HEPA High Capacity Filters

Apr 8, 2021

(mBq/kg)

3121.00

109.20

17270.00

1902.00

370.80

43.10

3934.00

140.80

252870.00

13100.00

7.20

25.10

23.67

26.92

PN: 855211592

(ppm / ppb / ppt)

252.8 ppb

8.85 ppb

1398.87 ppb

154.06 ppb

652.61 ppb

75.86 ppb

967.76 ppb

34.64 ppb

8167.7 ppm

423.13 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

22Na:

Filter Type: XH Absolute

(mBq/kg)

1.43E+06

1.35E+05

1.02E+06

5.12E+04

<35.19

2681.00

158.70

305.29

49.83

(ppm / ppb / ppt)

116.02 ppm

10.94 ppm

659.53 ppb

39.04 ppb

SNOLAB L17

Nora vulcanized rubber compound

100.4 g

6.895

210702

Jul 2, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Norament XP Rubber Flooring

Type: 5109 “Orion”

Jul 7, 2021

(mBq/kg)

2491.00

65.49

10940.00

1014.00

189.50

11.52

5198.00

141.40

32302.00

1715.00

<15.28

<10.31

Nora Systems Inc Salem, NH 03079

(ppm / ppb / ppt)

201.77 ppb

5.3 ppb

886.14 ppb

82.13 ppb

333.52 ppb

20.28 ppb

1278.71 ppb

34.78 ppb

1043.35 ppm

55.39 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

29307.00

17550.00

<109.60

47.66

12.08

5014.00

146.20

(ppm / ppb / ppt)

2.37 ppm

1.42 ppm

1233.44 ppb

35.97 ppb

SNOLAB L18

Lake Bed Sand from Lohi Lake in City of Greater Sudbury, Ontario

467.1 g

2.526

211107

Nov 5, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Lohi Lake Sand

Sample collected on 2021-09-06 at 15:00

Nov 9, 2021

(mBq/kg)

8525.00

184.70

15700.00

1101.00

404.30

18.51

6926.00

188.50

429400.00

22000.00

N/D – No observable signal due to U & Th Interference

<38.50

(ppm / ppb / ppt)

690.53 ppb

14.96 ppb

1271.7 ppb

89.18 ppb

711.57 ppb

32.58 ppb

1703.8 ppb

46.37 ppb

13869.62 ppm

710.6 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

46779

9863.00

N/D – No observable signal due to U & Th Interference

6483.00

202.60

(ppm / ppb / ppt)

3789.1 ppb

798.9 ppb

1594.82 ppb

49.84 ppb

SNOLAB L19

Lake Bed Sand from Nepahwin Lake in City of Greater Sudbury, Ontario

478.0 g

3.714

211109

Nov 9, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Nepahwin Lake Sand

Sample collected on 2021-09-05 at 19:00

Nov 13, 2021

(mBq/kg)

14120.00

278.50

23150.00

1395.00

682.50

21.98

15010.00

368.40

379340.00

19000.00

N/D – No observable signal due to U & Th Interference

<25.13

(ppm / ppb / ppt)

1143.72 ppb

22.56 ppb

1875.15 ppb

113 ppb

1201.2 ppb

38.68 ppb

3692.46 ppb

90.63 ppb

12252.68 ppm

613.7 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

54022.00

9535.00

N/D – No observable signal due to U & Th Interference

13590.00

348.10

(ppm / ppb / ppt)

4375.78 ppb

772.34 ppb

3343.14 ppb

85.63 ppb

SNOLAB L20

Lake Bed Sand from Simon Lake in City of Greater Sudbury, Ontario

499.8 g

2.943

211126

Nov 26, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Simon Lake Sand

Sample collected on 2021-09-07 at 18:00

Nov 29, 2021

(mBq/kg)

31760.00

608.60

48030.00

2861.00

1470.00

43.24

49220.00

1167.00

927150.00

47380.00

N/D – No observable signal due to U & Th Interference

<37.06

(ppm / ppb / ppt)

2572.56 ppb

49.3 ppb

3890.43 ppb

231.74 ppb

2587.2 ppb

76.1 ppb

12108.12 ppb

287.08 ppb

29946.95 ppm

1530.37 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

38602.00

15460.00

N/D – No observable signal due to U & Th Interference

46640.00

1112.00

(ppm / ppb / ppt)

3126.76 ppb

1252.26 ppb

11473.44 ppb

273.55 ppb

SNOLAB L21

Armstrong Item 870 Cleanroom VL (non-perforated)

117.0 g

3.846

210924

Sep 24, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Ceiling Tile

Sep 28, 2021

(mBq/kg)

44700.00

864.60

75710.00

4154.00

2318.00

65.42

47200.00

1145.00

432980.00

22230.00

<25.46

<81.84

(ppm / ppb / ppt)

3620.7 ppb

70.03 ppb

6132.51 ppb

336.47 ppb

4079.68 ppb

115.14 ppb

11611.2 ppb

281.67 ppb

13985.25 ppm

718.03 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

47072.00

20640.00

<623.90

265.31

51.11

45140.00

1106.00

(ppm / ppb / ppt)

3812.83 ppb

1671.84 ppb

11104.44 ppb

272.08 ppb

SNOLAB L22

Floor Sample for Surface Labs

36.6 g

2.687

210928
211001

Sep 28, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Floor Tile
Altro Operetta – Glee

Altro Operetta Glee OP2136

Oct 1, 2021

(mBq/kg)

1900.00

71.19

3455.00

452.30

96.10

11.18

826.30

50.13

31487.00

1895.00

<9.85

<14.16

(ppm / ppb / ppt)

153.9 ppb

5.77 ppb

279.86 ppb

36.64 ppb

169.14 ppb

19.68 ppb

203.27 ppb

12.33 ppb

1017.03 ppm

61.21 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

2900.4

6592.00

<129.40

<16.26

846.40

72.66

(ppm / ppb / ppt)

234.93 ppb

533.95 ppb

208.21 ppb

17.87 ppb

SNOLAB L23

Floor Sample for Surface Labs

78.5 g

6.909

21100101
211004

Oct 1, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Floor Tile Altro Symphonia – Vapor

Altro Symphonia Vapor PH2004

Oct 8, 2021

(mBq/kg)

2769.00

74.44

5592.00

470.30

141.70

9.37

2170.00

71.84

18133.00

1031.00

<9.41

13.40

8.86

(ppm / ppb / ppt)

224.29 ppb

6.03 ppb

452.95 ppb

38.09 ppb

249.39 ppb

16.49 ppb

533.82 ppb

17.67 ppb

585.7 ppm

33.3 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<10550.00

<168.70

<22.51

2054.00

82.33

(ppm / ppb / ppt)

<854.55 ppb

505.28 ppb

20.25 ppb

SNOLAB L24

Floor Sample for Surface Labs

79.5 g

5.152

211008

Oct 8, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Floor Tile
Altro Symphonia – Flurry

Altro Symphonia Flurry PH2012

Oct 13, 2021

(mBq/kg)

1966.00

60.17

3271.00

385.10

88.48

8.44

1258.00

50.48

8899.20

585.50

<6.28

<13.54

(ppm / ppb / ppt)

159.25 ppb

4.87 ppb

264.95 ppb

31.19 ppb

155.72 ppb

14.86 ppb

309.47 ppb

12.42 ppb

287.44 ppm

18.91 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

12715.00

6240.00

<170.90

<18.52

1249.00

63.45

(ppm / ppb / ppt)

1029.92 ppb

505.44 ppb

307.25 ppb

15.61 ppb

SNOLAB L25

Lake Bed Sand from Vermilion Lake in City of Greater Sudbury, Ontario

385.9 g

3.923

211129

Nov 29, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Vermilion Lake Sand

Sample collected on 2021-09-18 at 20:52

Dec 3, 2021

(mBq/kg)

10230.00

216.40

17450.00

1251.00

511.70

20.04

13000.00

327.40

672120.00

34360.00

N/D – No observable signal due to U & Th Interference

<20.27

(ppm / ppb / ppt)

828.63 ppb

17.53 ppb

1413.45 ppb

101.33 ppb

900.59 ppb

35.27 ppb

3198 ppb

80.54 ppb

21709.48 ppm

1109.83 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

14614.00

9543.00

N/D – No observable signal due to U & Th Interference

12850.00

337.70

(ppm / ppb / ppt)

1183.73 ppb

772.98 ppb

3161.1 ppb

83.07 ppb

SNOLAB L26

Sample Collected in April, 2021

1871.3 g

2.765

211207
21120702

Dec 7, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

King Shotcrete 25017

Product #: 25017 or MS-D3 UG MF

Dec 10, 2021

(mBq/kg)

24890.00

459.30

37270.00

2058.00

1339.00

33.33

51880.00

1206.00

619290.00

31630.00

<11.26

<17.16

Bag No; 70
Batch Date: 11 Feb 2021

(ppm / ppb / ppt)

2.02 ppm

0.04 ppm

3.02 ppm

0.17 ppm

2.36 ppm

0.06 ppm

12.76 ppm

0.3 ppm

20003.07 ppm

1021.65 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

38198.00

16410.00

N/D – No observable signal due to U & Th Interference

49390.00

1136.00

(ppm / ppb / ppt)

3.09 ppm

1.33 ppm

12.15 ppm

0.28 ppm

SNOLAB L27

W.R. Meadows of Canada

1753.3 g

3.005

220114

Jan 14, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Construction Grout

Product: CG-86
Part: 3600-201

Jan 17, 2022

(mBq/kg)

13320.00

245.30

18340.00

1018.00

636.50

16.76

10230.00

243.40

314770.00

16080.00

<2.67

<11.15

(ppm / ppb / ppt)

1.08 ppm

0.02 ppm

1.49 ppm

0.08 ppm

1.12 ppm

0.03 ppm

2.52 ppm

0.06 ppm

10167.07 ppm

519.38 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

30227.00

9877.00

N/D – No observable signal due to U & Th Interference

9396.00

230.50

(ppm / ppb / ppt)

2.45 ppm

0.8 ppm

2.31 ppm

0.06 ppm

SNOLAB L28

Screen Material used during construction of the UG lab expansion

559.55 g

14.124

220121

Jan 21, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Wall Screen (Galvanized Steel)

Feb 4, 2022

(mBq/kg)

22.35

1.21

139.30

24.91

2.62

0.38

49.84

2.16

411.77

26.71

<0.92

0.33

0.36

(ppm / ppb / ppt)

1.81 ppb

0.1 ppb

11.28 ppb

2.02 ppb

4.61 ppb

0.67 ppb

12.26 ppb

0.53 ppb

13.3 ppm

0.86 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

5268.10

2465.00

6.61

3.74

1.59

0.50

41.06

2.51

(ppm / ppb / ppt)

426.72 ppb

199.67 ppb

10.1 ppb

0.62 ppb

SNOLAB L29

Imagine smooth ABS-33 / Pebble Beach

158.25 g

3.930

211203

Dec 3, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

ABPure Nfuse Rubber Sheet

Dec 7, 2021

(mBq/kg)

4637.00

103.40

8176.00

549.50

229.90

9.92

3767.00

105.30

11701.00

663.20

<9.38

<17.78

(ppm / ppb / ppt)

375.6 ppb

8.38 ppb

662.26 ppb

44.51 ppb

404.62 ppb

17.45 ppb

926.68 ppb

25.9 ppb

377.94 ppm

21.42 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

9281.20

3847.00

<120.00

16.34

10.34

3709.00

113.90

(ppm / ppb / ppt)

751.78 ppb

311.61 ppb

912.41 ppb

28.02 ppb

SNOLAB L30

Lake Bed Sand from St. Charles Lake in City of Greater Sudbury, Ontario

604.45 g

3.034

211217

Dec 17, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

St Charles Lake Sand

Sample collected on 2021-09-27 at 14:10

Dec 20, 2021

(mBq/kg)

13530.00

268.50

23890.00

1448.00

676.00

22.26

14560.00

358.40

483180.00

24700.00

N/D – No observable signal due to U & Th Interference

<25.30

(ppm / ppb / ppt)

1095.93 ppb

21.75 ppb

1935.09 ppb

117.29 ppb

1189.76 ppb

39.18 ppb

3581.76 ppb

88.17 ppb

15606.71 ppm

797.81 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<17170.00

N/D – No observable signal due to U & Th Interference

13430.00

349.40

(ppm / ppb / ppt)

<1390.77 ppb

3303.78 ppb

85.95 ppb

SNOLAB L31

Lake Bed Sand from Ramsey Lake in City of Greater Sudbury, Ontario

552.25 g

2.853

211220

Dec 20, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Ramsey Lake Sand

Sample collected on 2021-09-27 at 17:00

Dec 23, 2021

(mBq/kg)

14830.00

295.40

27600.00

1599.00

764.20

24.84

16040.00

395.10

490320.00

25070.00

N/D – No observable signal due to U & Th Interference

<38.57

(ppm / ppb / ppt)

1201.23 ppb

23.93 ppb

2235.6 ppb

129.52 ppb

1344.99 ppb

43.72 ppb

3945.84 ppb

97.19 ppb

15837.34 ppm

809.76 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

34341.00

10030.00

N/D – No observable signal due to U & Th Interference

13850.00

362.40

(ppm / ppb / ppt)

2781.62 ppb

812.43 ppb

3407.1 ppb

89.15 ppb

SNOLAB L32

Lake Bed Sand from Laurentian Lake in City of Greater Sudbury, Ontario

613.2 g

6.935

220107

Jan 7, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Lake Laurentian Sand

Sample collected on 2021-10-08 at 18:00

Jan 14, 2022

(mBq/kg)

177500.00

331.30

29190.00

1467.00

879.40

22.97

18590.00

441.20

520550.00

26590.00

N/D – No observable signal due to U & Th Interference

<19.55

(ppm / ppb / ppt)

14377.5 ppb

26.84 ppb

2364.39 ppb

118.83 ppb

1547.74 ppb

40.43 ppb

4573.14 ppb

108.54 ppb

16813.77 ppm

858.86 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

29634.00

6654.00

N/D – No observable signal due to U & Th Interference

15980.00

386.20

(ppm / ppb / ppt)

2400.35 ppb

538.97 ppb

3931.08 ppb

95.01 ppb

SNOLAB L33

Aluminum Ceiling Tile Panel

184.3 g

6.930

211210
211213

Dec 10, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Rockfon Planostile Ceiling Tile

Dec 17, 2021

(mBq/kg)

6.31

2.83

15280.00

695.30

277.90

7.23

349.90

13.03

84.57

21.19

<3.03

<1.20

(ppm / ppb / ppt)

0.51 ppb

0.23 ppb

1237.68 ppb

56.32 ppb

489.1 ppb

12.73 ppb

86.08 ppb

3.21 ppb

2.73 ppm

0.68 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

32651.00

3118.00

14.99

14.82

1.62

1.68

133.10

9.59

(ppm / ppb / ppt)

2.64 ppm

0.25 ppm

32.74 ppb

2.36 ppb

SNOLAB L34

Lake Bed Shoreline Sand/Sediment from Long Lake in City of Greater Sudbury, Ontario

150.5 g

3.902

220117

Jan 17, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Long Lake Shoreline Sediment

Sample collected on 2021-11-02 at 16:52

Jan 21, 2022

(mBq/kg)

13140.00

279.00

13730.00

1209.00

753.00

30.73

9075.00

249.00

55457.00

2947.00

N/D – No observable signal due to U & Th Interference

<17.50

(ppm / ppb / ppt)

1064.34 ppb

22.6 ppb

1112.13 ppb

97.93 ppb

1325.28 ppb

54.08 ppb

2.23 ppm

0.06 ppm

1791.26 ppm

95.19 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

1.16E+06

89440.00

N/D – No observable signal due to U & Th Interference

8276.00

266.60

(ppm / ppb / ppt)

93.96 ppm

7.24 ppm

2.04 ppm

0.07 ppm

SNOLAB L35

Long Lake in City of Greater Sudbury, Ontario

998.3 g

14.818

211223
220103

Dec 23, 2021

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Long Lake Water

Sample collected on 2019-11-02 at 16:52

Jan 7, 2022

(mBq/kg)

3.40

0.36

7.83

6.44

<0.14

<0.40

41.04

4.97

0.84

0.21

<0.16

(ppm / ppb / ppt)

0.28 ppb

0.03 ppb

0.63 ppb

0.52 ppb

<0.25 ppb

<0.1 ppb

1325.43 ppb

160.4 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

715.16

269.50

7.99

1.71

<0.21

<1.15

(ppm / ppb / ppt)

57.93 ppb

21.83 ppb

<0.28 ppb

SNOLAB L36

Capintec Inc, Mirion Technologies

946.0 g

10.812

220414

Apr 14, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Radi-Clean

Model 03-333

Apr 25, 2022

(mBq/kg)

21.70

1.12

30.41

10.89

1.07

0.26

9.58

0.89

697.16

41.66

<0.47

<0.69

(ppm / ppb / ppt)

1.76 ppb

0.09 ppb

2.46 ppb

0.88 ppb

1.87 ppb

0.46 ppb

2.36 ppb

0.22 ppb

22.52 ppm

1.35 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

371.69

318.20

<5.08

<0.53

12.57

1.54

(ppm / ppb / ppt)

30.11 ppb

25.77 ppb

3.09 ppb

0.38 ppb

SNOLAB L37

Biodex Medical Systems Inc.

1049.1 g

13.693

220517

May 17, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

RadiacWash

May 31, 2022

(mBq/kg)

2.39

0.39

<5.29

0.22

0.13

<0.34

48.78

5.80

<0.095

<0.21

(ppm / ppb / ppt)

0.19 ppb

0.03 ppb

<0.43 ppb

0.39 ppb

0.23 ppb

<83.64 ppt

1.58 ppm

0.19 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

109.27

246.20

<1.15

<0.17

1.44

0.65

(ppm / ppb / ppt)

8.85 ppb

19.94 ppb

0.36 ppb

0.16 ppb

SNOLAB L38

18.066 g

21.630

220425

Apr 25, 2022

Results:

238U from 226Ra

238U from 234Th

235U
(This may be overestimated due to 226Ra interference)

232Th

40K

137Cs

60Co

Comments

Majorana Demonstrator Experiment

May 17, 2022

(mBq/kg)

<0.85

90.23

65.35

3.00

1.57

<4.92

<75.01

<1.69

<1.89

Cryostat Spider M1

(mBq/piece)

<0.0154

1.63

1.18

0.054

0.028

<0.09

<1.36

<0.031

<0.034

(ppm / ppb / ppt)

<68.85 ppt

7.31 ppb

5.29 ppb

5.28 ppb

2.77 ppb

<1.21 ppb

<2.42 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

226Ra
(Peak from 186.2 keV only)

(mBq/kg)

<1758.00

<33.63

1.05

2.06

9.29

9.81

73.44

3.90

(mBq/piece)

<31.76

<0.61

0.019

0.037

0.17

0.18

1.33

0.07

(ppm / ppb / ppt)

<142.4 ppb

2.29 ppb

2.41 ppb

5.95 ppb

0.32 ppb

SNOLAB L39

Capintec Inc, Mirion Technologies

1012.7 g

14.346

220517
220608

May 31, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Radi-Clean
Diluted with UPW at the 4% dilution level as per manufacturers directions

Model 03-333

Jun 15, 2022

(mBq/kg)

<0.28

1.25

5.35

0.24

0.12

0.39

0.36

20.87

4.05

0.09

0.16

<0.090

(ppm / ppb / ppt)

<22.68 ppt

0.1 ppb

0.43 ppb

0.21 ppb

0.1 ppb

0.09 ppb

0.67 ppm

0.13 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<204.70

0.89

1.14

0.034

0.135

0.91

0.59

(ppm / ppb / ppt)

<16.58 ppb

0.22 ppb

0.14 ppb

SNOLAB L40

Ramsey Lake In City of Greater Sudbury, Ontario

989.4 g

11.728

220923
220828

Sep 23, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Ramsey Lake Water

Sample collected on 2022-09-09 at 13:33

Oct 6, 2022

(mBq/kg)

<0.46

<9.97

<0.25

<0.40

61.48

6.78

0.82

0.23

<0.11

(ppm / ppb / ppt)

<0.04 ppb

<0.81 ppb

<0.44 ppb

<0.1 ppb

1.99 ppm

0.22 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

860.53

320.90

11.57

2.13

<0.16

0.69

0.57

(ppm / ppb / ppt)

69.7 ppb

25.99 ppb

0.17 ppb

0.14 ppb

SNOLAB L41

Long Lake in City of Greater Sudbury, Ontario

1000.5 g

7.833

22100601
221012

Oct 6, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Long Lake Water

Sample collected on 2022-09-06 at 17:30

Oct 14, 2022

(mBq/kg)

0.97

0.38

14.93

9.16

0.21

0.15

<0.34

60.18

7.84

1.89

0.37

<0.13

(ppm / ppb / ppt)

78.86 ppt

30.49 ppt

1.21 ppb

0.74 ppb

373.65 ppt

272.27 ppt

<0.08 ppb

1.94 ppm

0.25 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<790.80

3.54

1.75

<0.36

3.38

0.80

(ppm / ppb / ppt)

<64.05 ppb

0.83 ppb

0.2 ppb

SNOLAB L42

Lohi Lake in City of Greater Sudbury, Ontario

1031.6 g

6.777

221014

Oct 14, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Lohi Lake

Sample collected on 2022-09-04 at 15:40

Oct 21, 2022

(mBq/kg)

1.38

0.42

13.06

8.50

0.14

<0.57

25.81

5.57

0.40

0.21

<0.17

(ppm / ppb / ppt)

111.94 ppt

34.21 ppt

1.06 ppb

0.69 ppb

253.79 ppt

250.45 ppt

<0.14 ppb

0.83 ppm

0.18 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<526.70

15.24

2.78

<0.21

<1.31

(ppm / ppb / ppt)

<42.66 ppb

<0.32 ppb

SNOLAB L43

Laurentian Lake in City of Greater Sudbury, Ontario

946.7 g

6.819

221109

Nov 9, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Laurentian Lake Water

Sample collected on 2022-09-02 at 12:15

Nov 16, 2022

(mBq/kg)

0.36

0.40

<17.92

0.40

0.19

<1.02

111.03

11.86

0.29

0.24

<0.21

(ppm / ppb / ppt)

29.17 ppt

32.53 ppt

<1.45 ppb

0.71 ppb

0.34 ppb

<0.25 ppb

3.59 ppm

0.38 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

537.82

418.90

3.84

1.91

<0.19

1.04

0.83

(ppm / ppb / ppt)

43.56 ppb

33.93 ppb

0.26 ppb

0.2 ppb

SNOLAB L44

Panache Lake in City of Greater Sudbury, Ontario

1017.0 g

6.759

221116
221121

Nov 16, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Panache Lake Water

Sample collected on 2022-09-10 at 16:30

Nov 23, 2022

(mBq/kg)

2.46

0.46

<21.61

0.18

0.17

1.04

0.49

21.67

5.32

0.69

0.25

<0.16

(ppm / ppb / ppt)

199.02 ppt

37.47 ppt

<1.75 ppb

0.31 ppb

0.29 ppb

0.26 ppb

0.12 ppb

0.7 ppm

0.17 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

597.08

400.40

8.72

2.24

<0.28

<1.35

(ppm / ppb / ppt)

48.36 ppb

32.43 ppb

<0.33 ppb

SNOLAB L45

McCharles Lake (Vermilion River) in City of Greater Sudbury, Ontario

1004.7 g

6.867

221123
221128

Nov 23, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

McCharles Lake / Vermilion River Water

Sample collected on 2022-09-17 at 16:00

Nov 30, 2022

(mBq/kg)

0.50

0.38

<22.59

0.32

0.17

0.25

0.41

39.51

6.81

0.81

0.28

<0.28

(ppm / ppb / ppt)

40.23 ppt

30.98 ppt

<1.83 ppb

0.57 ppb

0.3 ppb

0.06 ppb

0.1 ppb

1.28 ppm

0.22 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<392.30

6.77

2.12

<0.24

0.42

0.73

(ppm / ppb / ppt)

<31.78 ppb

0.1 ppb

0.18 ppb

SNOLAB L46

Simon Lake in City of Greater Sudbury, Ontario

1003.6 g

8.416

221130
221202
221207

Nov 30, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Simon Lake Water

Sample collected on 2022-09-10 at 17:00

Dec 9, 2022

(mBq/kg)

1.51

0.43

<20.20

<0.48

<0.42

342.80

23.46

0.14

0.24

<0.25

(ppm / ppb / ppt)

122.55 ppt

35.2 ppt

<1.64 ppb

<0.84 ppb

<0.1 ppb

11.07 ppm

0.76 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

411.93

366.90

<3.57

0.39

0.23

3.44

0.97

(ppm / ppb / ppt)

33.37 ppb

29.72 ppb

0.85 ppb

0.24 ppb

SNOLAB L47

Robinson Lake in City of Greater Sudbury, Ontario

901.0 g

10.089

221209

Dec 9, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Robinson Lake Water

Sample collected on 2022-09-17 at 14:39

Dec 19, 2022

(mBq/kg)

<0.49

4.18

8.43

0.18

0.14

<0.42

112.00

10.54

0.22

0.20

<0.31

(ppm / ppb / ppt)

<39.69 ppt

0.34 ppb

0.68 ppb

0.32 ppb

0.25 ppb

<0.1 ppb

3.62 ppm

0.34 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<350.10

1.77

1.55

0.13

0.14

<1.11

(ppm / ppb / ppt)

<28.36 ppb

<0.27 ppb

SNOLAB L48

Nuclean is diluted at 1:50 with UPW as per the directions

1011.7 g

14.825

230118
230126

Jan 18, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Nuclean NC-200 Mixed Cleaning Liquid

National Diagnostics, Atlanta Georgia

Feb 2, 2023

(mBq/kg)

<0.49

<10.33

<0.16

0.36

0.29

<2.51

<0.19

<0.077

(ppm / ppb / ppt)

<0.04 ppb

<0.84 ppb

<0.28 ppb

0.09 ppb

0.07 ppb

<81.07 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

403.62

272.50

<1.72

<0.21

0.82

0.44

(ppm / ppb / ppt)

32.69 ppb

22.07 ppb

0.2 ppb

0.11 ppb

SNOLAB L49

2255.3 g

9.096

230307
230314

Mar 7, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Lemer Pax CuC1 Copper Block

Mar 17, 2023

(mBq/kg)

<0.020

<1.55

0.044

0.030

<0.084

0.61

0.66

0.091

0.048

<0.094

(ppm / ppb / ppt)

<1.62 ppt

<125.55 ppt

78.11 ppt

52.71 ppt

<20.66 ppt

19.65 ppb

21.48 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

57Co:

58Co:

(mBq/kg)

<43.18

<0.30

0.040

0.036

0.12

0.15

0.092

0.050

0.54

0.09

(ppm / ppb / ppt)

<3.5 ppb

28.36 ppt

37.64 ppt

SNOLAB L50

2855.7 g

10.811

230317
230320

Mar 17, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Lemer Pax LB Lead

Mar 28, 2023

(mBq/kg)

<0.032

<3.03

<0.058

0.131

0.093

0.88

0.53

0.051

0.036

<0.023

(ppm / ppb / ppt)

<2.59 ppt

<245.43 ppt

<102.08 ppt

32.1 ppt

2 ppt

28.38 ppb

17.22 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

73.06

42.89

0.34

0.38

0.022

0.028

<0.27

(ppm / ppb / ppt)

5.92 ppb

3.47 ppb

<66.42 ppt

SNOLAB L51

707.3 g

13.832

230328

Mar 28, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Lemer Pax ULB Lead

Apr 11, 2023

(mBq/kg)

<0.044

<3.90

0.10

0.06

<0.47

<3.02

0.18

0.12

<0.10

(ppm / ppb / ppt)

<3.56 ppt

<315.9 ppt

175.21 ppt

110.88 ppt

<115.62 ppt

<97.55 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<109.10

1.17

0.92

<0.12

<0.99

(ppm / ppb / ppt)

<8.84 ppb

<243.54 ppt

SNOLAB L52

Certified orgnic by Pacific Agricultural Certifiaction Society 16-507

268.2 g

2.882

230509

May 9, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Que Pasa Tortilaa Chips

Que Pasa Mexican Foods, Richmond BC

May 12, 2023

(mBq/kg)

66.71

9.06

99.65

127.60

<4.71

5.890

6.310

62440.00

3268.00

30.55

7.76

6.46

7.90

(ppm / ppb / ppt)

5.4 ppb

0.73 ppb

8.07 ppb

10.34 ppb

<8.29 ppb

1.45 ppb

1.55 ppb

2016.81 ppm

105.56 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

3886.10

4875.00

48.18

8.35

7.54

<24.31

(ppm / ppb / ppt)

314.77 ppb

394.88 ppb

<5.98 ppb

SNOLAB L53

This containes trace amounts of acid and copper

861.5 g

13.617

230524

May 24, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Spent Copper Etching Solution

Etching Time: 10 minutes

Jun 7, 2023

(mBq/kg)

<0.31

<11.90

<0.18

<0.54

<5.44

<0.12

<0.088

Etching Date: April 13th, 2023

(ppm / ppb / ppt)

<0.03 ppb

<0.96 ppb

<0.32 ppb

<0.13 ppb

<175.71 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

425.27

353.60

<1.88

<0.23

<1.68

(ppm / ppb / ppt)

34.45 ppb

28.64 ppb

<0.41 ppb

SNOLAB L54

This contains 1% citric acid

915.4 g

20.095

23060704
230614
230620

Jun 7, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Spent Copper Passivation Solution

Passivation Time: 5 minutes

Jun 28, 2023

(mBq/kg)

<0.18

<1.65

0.14

0.05

<0.15

<2.01

<0.056

<0.029

Etching Date: April 13th, 2023

(ppm / ppb / ppt)

<0.01 ppb

<0.13 ppb

0.25 ppb

0.1 ppb

<0.04 ppb

<64.92 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<123.00

<0.56

<0.057

<0.68

(ppm / ppb / ppt)

<9.96 ppb

<0.17 ppb

SNOLAB L55

2x7x7 cm slab of low-background pure (undoped) CsI scintillator. SICCAS origin.

470.2 g

20.665

220628

Jun 28, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

CsI Scintillator (undoped) for CEvN@ESS Project

Jul 19, 2023

(mBq/kg)

<0.20

90.80

25.16

<0.45

1.15

0.77

<4.11

1.26

0.37

<0.19

(ppm / ppb / ppt)

<16.2 ppt

7.35 ppb

2.04 ppb

<792 ppt

0.28 ppb

0.19 ppb

<132.75 ppb

Results:

210Pb

7Be

54Mn

228Ac

134Cs

132Cs

(mBq/kg)

26748.00

17750.00

<3.85

<0.39

1.37

0.91

33.10

1.39

4.13

0.50

(ppm / ppb / ppt)

2.17 ppm

1.44 ppm

0.34 ppb

0.22 ppb

SNOLAB L56

Simon Lake in City of Greater Sudbury, Ontario

971.3 g

7.194

23101802
23101803
231023
231024
23102401

Oct 18, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Robinson Lake Water

Sample collected on 2023-08-24

231025

Oct 26, 2023

(mBq/kg)

0.92

0.41

<14.12

0.21

0.17

<0.40

69.81

8.91

0.33

0.22

<0.22

(ppm / ppb / ppt)

0.07 ppb

0.03 ppb

<1.14 ppb

0.38 ppb

0.3 ppb

<0.1 ppb

2.25 ppm

0.29 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<576.60

1.88

1.71

<0.22

<1.20

(ppm / ppb / ppt)

<46.7 ppb

<0.3 ppb

SNOLAB L57

Robinson Lake in City of Greater Sudbury, Ontario

991.3 g

9.416

231026
23102601
231028
231029

Oct 26, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Laurentian Lake Water

Sample collected on 2023-08-02

231030
231031
231101
231102
231103

Nov 5, 2023

(mBq/kg)

<0.62

19.14

8.25

<0.27

<0.44

91.88

9.28

0.59

0.23

<0.14

(ppm / ppb / ppt)

<50.22 ppt

1.55 ppb

0.67 ppb

<0.48 ppb

<0.11 ppb

2.97 ppm

0.3 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<328.10

2.03

1.38

<0.19

1.27

0.67

(ppm / ppb / ppt)

<26.58 ppb

0.31 ppb

0.17 ppb

SNOLAB L58

Simon Lake in City of Greater Sudbury, Ontario

1029.5 g

10.840

231105

Nov 5, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Long Lake Water

Sample collected on 2023-09-09

Nov 16, 2023

(mBq/kg)

<0.28

<10.16

<0.15

<0.74

34.09

5.17

0.56

0.19

<0.27

(ppm / ppb / ppt)

<22.68 ppt

<0.82 ppb

<0.26 ppb

<0.18 ppb

1100.98 ppb

166.99 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<217.30

9.15

1.92

<0.14

<1.18

(ppm / ppb / ppt)

<17.6 ppb

<0.29 ppb

SNOLAB L59

Richard Lake in City of Greater Sudbury, Ontario

1018.9 g

13.791

230428

Mar 28, 2024

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Richard Lake Water

Sample collected on 2023-09-10

Apr 11, 2024

(mBq/kg)

<0.16

<8.69

<0.28

<0.23

27.01

4.28

0.84

0.21

<0.087

(ppm / ppb / ppt)

<12.96 ppt

<0.7 ppb

<0.49 ppb

<0.06 ppb

0.87 ppm

0.14 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

311.16

252.90

1.66

1.08

0.12

0.11

<0.58

(ppm / ppb / ppt)

25.2 ppb

20.48 ppb

<0.14 ppb

SNOLAB L60

2x7x7 cm slab of low-background pure (undoped) CsI scintillator. AMCRYS origin.

445.8 g

19.770

231116

Nov 16, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

CsI Scintillator (undoped) for CEvN@ESS Project

Dec 6, 2023

(mBq/kg)

<0.18

83.55

28.58

<1.26

1.30

0.80

<2.92

39.35

2.40

<0.17

Type: MC/03-70 70 20

(ppm / ppb / ppt)

<14.58 ppt

6.77 ppb

2.31 ppb

<2.22 ppb

0.32 ppb

0.2 ppb

<94.32 ppb

Serial No: 001 09.23

Results:

210Pb

7Be

54Mn

228Ac

134Cs

132Cs

(mBq/kg)

<1.34E4

5.65

3.50

<0.26

1.32

0.90

30.44

1.32

3.64

0.48

(ppm / ppb / ppt)

<1.09 ppm

0.32 ppb

0.22 ppb

SNOLAB L61

Bubble Detector Technologies BDS Tubes

3030.6 g

19.423

231228
240105

Dec 28, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

BDS Tubes

144 units

Jan 17, 2024

(mBq/kg)

25.51

0.94

48.38

8.95

1.62

0.19

8.02

0.49

94.48

5.93

3.76

0.31

<0.15

(ppm / ppb / ppt)

2.07 ppb

0.08 ppb

3.92 ppb

0.72 ppb

2.85 ppb

0.33 ppb

1.97 ppb

0.12 ppb

3.05 ppm

0.19 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

134Cs

132Cs

(mBq/kg)

43.539

79.99

6.55

2.07

0.15

0.13

7.18

0.61

127.70

3.91

0.30

0.18

(ppm / ppb / ppt)

3.53 ppb

6.48 ppb

1.77 ppb

0.15 ppb

SNOLAB L62

Stonhard www.stonhard.com

118.2 g

5.799

240419
240422

Apr 19, 2024

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Stonclad GS-GS4 – Pewter
Flooring

Apr 25, 2024

(mBq/kg)

2936.00

68.31

6612.00

417.20

182.70

7.48

1809.00

54.81

30885.00

1626.00

21.68

7.97

<7.10

(ppm / ppb / ppt)

237.82 ppb

5.53 ppb

535.57 ppb

33.79 ppb

321.55 ppb

13.16 ppb

445.01 ppb

13.48 ppb

997.59 ppm

52.52 ppm

Results:

210Pb

7Be

54Mn

228Ac

(mBq/kg)

6429.60

2556.00

<89.30

10.79

7.49

1587.00

57.14

(ppm / ppb / ppt)

520.8 ppb

207.04 ppb

390.4 ppb

14.06 ppb

SNOLAB L63

70% Cocoa

202.3 g

5.000

240425

Apr 25, 2024

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

President’s Choice Organic Dark Chocolate

Made in Belgium

Apr 30, 2024

(mBq/kg)

235.90

14.77

425.30

204.40

3.65

4.78

193.10

16.03

212660.00

10910.00

38.41

11.03

<22.83

(ppm / ppb / ppt)

19.11 ppb

1.2 ppb

34.45 ppb

16.56 ppb

6.42 ppb

8.41 ppb

47.5 ppb

3.94 ppb

6868.92 ppm

352.39 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

134Cs

132Cs

(mBq/kg)

<2857.00

131.96

76.71

<21.26

376.90

34.98

13.39

8.24

(ppm / ppb / ppt)

<0.23 ppm

92.72 ppb

8.61 ppb

In Progress Sample Measurements for the Lively Detector

Runs in Progress:

Sample Description

Mass (g)

Live Time (days)

Run Numbers

Counting Dates
(if applicable)

SNOLAB L64

Medium Grey
#32 broadcast
33NA Finish

117.8 g

1.174

240430

Apr 30, 2024

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Sikafloor 22NA PurCem

Type: SS-0621

(mBq/kg)

5233.00

152.70

7036.00

713.10

257.20

20.87

3292.00

126.70

193970.00

10190.00

20.77

29.92

39.33

30.60

Monte Carlo Simulations Not Included

(ppm / ppb / ppt)

423.87 ppb

12.37 ppb

569.92 ppb

57.76 ppb

452.67 ppb

36.73 ppb

809.83 ppb

31.17 ppb

6265.23 ppm

329.14 ppm

Results:

210Pb

7Be

54Mn

228Ac

(mBq/kg)

<15880.00

<240.20

<45.73

3447.00

165.50

(ppm / ppb / ppt)

<1286.28 ppb

847.96 ppb

40.71 ppb

SNOLAB L65

197.1 g

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Lindt White chocolate

(mBq/kg)

(ppm / ppb / ppt)

0 ppb

0 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

134Cs

132Cs

(mBq/kg)

(ppm / ppb / ppt)

Err:502

0 ppb

Next Sample

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

(mBq/kg)

(ppm / ppb / ppt)

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

(ppm / ppb / ppt)