- Aluminum, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01106, MCode: PLM10
Dates: 02/08/19 through 10/23/24
Open Data Set

Mean = 160.19 % Relative Standard Deviation = 3.6 Number of Observations = 10 Blind Sample ID = T251 Mean = 83.02 % Relative Standard Deviation = 8.3 Number of Observations = 14 Blind Sample ID = T249 Mean = 379.09 % Relative Standard Deviation = 3.6 Number of Observations = 28 Blind Sample ID = T247 Mean = 620.00 % Relative Standard Deviation = 4.1 Number of Observations = 32 Blind Sample ID = T245 Mean = 794.61 % Relative Standard Deviation = 4.2 Number of Observations = 40 Blind Sample ID = T243 Mean = 191.68 % Relative Standard Deviation = 5.6 Number of Observations = 39 Blind Sample ID = T241 Mean = 262.25 % Relative Standard Deviation = 4.1 Number of Observations = 42 Blind Sample ID = T239 Mean = 817.86 % Relative Standard Deviation = 3.1 Number of Observations = 47 Blind Sample ID = T237 Mean = 958.03 % Relative Standard Deviation = 4.0 Number of Observations = 47 Blind Sample ID = T235 Mean = 477.18 % Relative Standard Deviation = 4.3 Number of Observations = 47 Blind Sample ID = T233 Mean = 535.60 % Relative Standard Deviation = 3.4 Number of Observations = 35 Blind Sample ID = T231 Mean = 669.42 % Relative Standard Deviation = 4.6 Number of Observations = 37 Blind Sample ID = T229 Mean = 626.27 % Relative Standard Deviation = 4.6 Number of Observations = 25 Blind Sample ID = T227 Mean = 247.70 % Relative Standard Deviation = 6.6 Number of Observations = 26 Blind Sample ID = T225 Mean = 541.32 % Relative Standard Deviation = 8.1 Number of Observations = 11 Blind Sample ID = T223 Mean = 386.36 % Relative Standard Deviation = 6.4 Number of Observations = 9 Blind Sample ID = T221
The SGPlot Procedure


- Aluminum, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01106, MCode: PLM43
Dates: 10/12/18 through 01/29/19
Open Data Set

Mean = 250.47 % Relative Standard Deviation = 7.6 Number of Observations = 5 Blind Sample ID = T225 Mean = 519.02 % Relative Standard Deviation = 2.7 Number of Observations = 3 Blind Sample ID = T223 Mean = 377.63 % Relative Standard Deviation = 2.9 Number of Observations = 4 Blind Sample ID = T221
The SGPlot Procedure


- Aluminum, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01105, MCode: PLM77
Dates: 11/28/18 through 09/25/24
Open Data Set

Mean = 162.18 % Relative Standard Deviation = 3.0 Number of Observations = 6 Blind Sample ID = T251 Mean = 86.32 % Relative Standard Deviation = 5.1 Number of Observations = 6 Blind Sample ID = T249 Mean = 389.38 % Relative Standard Deviation = 5.6 Number of Observations = 14 Blind Sample ID = T247 Mean = 610.14 % Relative Standard Deviation = 5.4 Number of Observations = 16 Blind Sample ID = T245 Mean = 801.25 % Relative Standard Deviation = 4.0 Number of Observations = 22 Blind Sample ID = T243 Mean = 189.16 % Relative Standard Deviation = 3.1 Number of Observations = 24 Blind Sample ID = T241 Mean = 268.02 % Relative Standard Deviation = 5.6 Number of Observations = 24 Blind Sample ID = T239 Mean = 798.33 % Relative Standard Deviation = 4.2 Number of Observations = 24 Blind Sample ID = T237 Mean = 942.79 % Relative Standard Deviation = 5.2 Number of Observations = 23 Blind Sample ID = T235 Mean = 464.73 % Relative Standard Deviation = 4.3 Number of Observations = 23 Blind Sample ID = T233 Mean = 514.02 % Relative Standard Deviation = 4.3 Number of Observations = 21 Blind Sample ID = T231 Mean = 666.61 % Relative Standard Deviation = 3.6 Number of Observations = 19 Blind Sample ID = T229 Mean = 608.22 % Relative Standard Deviation = 6.5 Number of Observations = 16 Blind Sample ID = T227 Mean = 249.22 % Relative Standard Deviation = 6.0 Number of Observations = 15 Blind Sample ID = T225 Mean = 508.36 % Relative Standard Deviation = 7.2 Number of Observations = 7 Blind Sample ID = T223 Mean = 357.96 % Relative Standard Deviation = 5.6 Number of Observations = 4 Blind Sample ID = T221
The SGPlot Procedure


- Aluminum, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: , PCode: 01105, MCode: PLM78
Dates: 10/29/18 through 11/27/18
Open Data Set

The SGPlot Procedure


- Antimony, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01095, MCode: PLM43
Dates: 10/12/18 through 10/09/24
Open Data Set

Mean = 1.85 % Relative Standard Deviation = 3.8 Number of Observations = 10 Blind Sample ID = T251 Mean = 0.58 % Relative Standard Deviation = 2.7 Number of Observations = 13 Blind Sample ID = T249 Mean = 3.52 % Relative Standard Deviation = 4.4 Number of Observations = 28 Blind Sample ID = T247 Mean = 0.24 % Relative Standard Deviation = 5.2 Number of Observations = 32 Blind Sample ID = T245 Mean = 2.47 % Relative Standard Deviation = 5.5 Number of Observations = 40 Blind Sample ID = T243 Mean = 0.16 % Relative Standard Deviation = 6.3 Number of Observations = 39 Blind Sample ID = T241 Mean = 2.60 % Relative Standard Deviation = 3.2 Number of Observations = 42 Blind Sample ID = T239 Mean = 0.26 % Relative Standard Deviation = 4.2 Number of Observations = 47 Blind Sample ID = T237 Mean = 0.08 % Relative Standard Deviation = 10.6 Number of Observations = 47 Blind Sample ID = T235 Mean = 1.67 % Relative Standard Deviation = 3.3 Number of Observations = 47 Blind Sample ID = T233 Mean = 0.22 % Relative Standard Deviation = 4.5 Number of Observations = 37 Blind Sample ID = T231 Mean = 3.26 % Relative Standard Deviation = 4.9 Number of Observations = 39 Blind Sample ID = T229 Mean = 2.84 % Relative Standard Deviation = 2.7 Number of Observations = 26 Blind Sample ID = T227 Mean = 1.89 % Relative Standard Deviation = 5.1 Number of Observations = 31 Blind Sample ID = T225 Mean = 4.91 % Relative Standard Deviation = 4.7 Number of Observations = 14 Blind Sample ID = T223 Mean = 1.04 % Relative Standard Deviation = 4.8 Number of Observations = 13 Blind Sample ID = T221 Mean = 0.97 % Relative Standard Deviation = 83.2 Number of Observations = 13 Blind Sample ID =
The SGPlot Procedure


- Antimony, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01097, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 1.92 % Relative Standard Deviation = 5.1 Number of Observations = 6 Blind Sample ID = T251 Mean = 0.53 % Relative Standard Deviation = 14.7 Number of Observations = 6 Blind Sample ID = T249 Mean = 3.44 % Relative Standard Deviation = 3.0 Number of Observations = 14 Blind Sample ID = T247 Mean = 0.22 % Relative Standard Deviation = 17.1 Number of Observations = 14 Blind Sample ID = T245 Mean = 2.41 % Relative Standard Deviation = 4.2 Number of Observations = 22 Blind Sample ID = T243 Mean = 0.15 % Relative Standard Deviation = 17.0 Number of Observations = 24 Blind Sample ID = T241 Mean = 2.58 % Relative Standard Deviation = 4.2 Number of Observations = 24 Blind Sample ID = T239 Mean = 0.26 % Relative Standard Deviation = 4.8 Number of Observations = 24 Blind Sample ID = T237 Mean = 0.08 % Relative Standard Deviation = 10.8 Number of Observations = 23 Blind Sample ID = T235 Mean = 1.65 % Relative Standard Deviation = 2.7 Number of Observations = 23 Blind Sample ID = T233 Mean = 0.21 % Relative Standard Deviation = 7.2 Number of Observations = 21 Blind Sample ID = T231 Mean = 3.30 % Relative Standard Deviation = 3.3 Number of Observations = 21 Blind Sample ID = T229 Mean = 2.83 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = T227 Mean = 1.94 % Relative Standard Deviation = 6.1 Number of Observations = 15 Blind Sample ID = T225 Mean = 4.98 % Relative Standard Deviation = 2.3 Number of Observations = 7 Blind Sample ID = T223 Mean = 1.03 % Relative Standard Deviation = 5.2 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Arsenic, fltd, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01000, MCode: PLM10
Dates: 10/12/18 through 10/11/24
Open Data Set

Mean = 14.34 % Relative Standard Deviation = 6.8 Number of Observations = 10 Blind Sample ID = T251 Mean = 17.41 % Relative Standard Deviation = 4.9 Number of Observations = 14 Blind Sample ID = T249 Mean = 6.85 % Relative Standard Deviation = 6.5 Number of Observations = 28 Blind Sample ID = T247 Mean = 3.22 % Relative Standard Deviation = 2.9 Number of Observations = 32 Blind Sample ID = T245 Mean = 0.48 % Relative Standard Deviation = 17.3 Number of Observations = 40 Blind Sample ID = T243 Mean = 3.84 % Relative Standard Deviation = 3.4 Number of Observations = 39 Blind Sample ID = T241 Mean = 5.45 % Relative Standard Deviation = 4.8 Number of Observations = 42 Blind Sample ID = T239 Mean = 5.77 % Relative Standard Deviation = 3.5 Number of Observations = 47 Blind Sample ID = T237 Mean = 5.08 % Relative Standard Deviation = 4.7 Number of Observations = 47 Blind Sample ID = T235 Mean = 4.33 % Relative Standard Deviation = 4.5 Number of Observations = 47 Blind Sample ID = T233 Mean = 3.22 % Relative Standard Deviation = 4.4 Number of Observations = 37 Blind Sample ID = T231 Mean = 13.45 % Relative Standard Deviation = 5.0 Number of Observations = 39 Blind Sample ID = T229 Mean = 0.32 % Relative Standard Deviation = 8.9 Number of Observations = 27 Blind Sample ID = T227 Mean = 0.81 % Relative Standard Deviation = 8.4 Number of Observations = 31 Blind Sample ID = T225 Mean = 7.56 % Relative Standard Deviation = 2.8 Number of Observations = 14 Blind Sample ID = T223 Mean = 18.15 % Relative Standard Deviation = 3.1 Number of Observations = 13 Blind Sample ID = T221
The SGPlot Procedure


- Arsenic, unfltd, cICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01002, MCode: PLM77
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 13.64 % Relative Standard Deviation = 3.9 Number of Observations = 6 Blind Sample ID = T251 Mean = 16.97 % Relative Standard Deviation = 4.4 Number of Observations = 6 Blind Sample ID = T249 Mean = 6.25 % Relative Standard Deviation = 5.5 Number of Observations = 14 Blind Sample ID = T247 Mean = 3.17 % Relative Standard Deviation = 3.4 Number of Observations = 16 Blind Sample ID = T245 Mean = 0.46 % Relative Standard Deviation = 8.6 Number of Observations = 22 Blind Sample ID = T243 Mean = 3.82 % Relative Standard Deviation = 3.7 Number of Observations = 24 Blind Sample ID = T241 Mean = 5.29 % Relative Standard Deviation = 3.3 Number of Observations = 24 Blind Sample ID = T239 Mean = 5.70 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = T237 Mean = 4.85 % Relative Standard Deviation = 4.4 Number of Observations = 23 Blind Sample ID = T235 Mean = 4.18 % Relative Standard Deviation = 4.6 Number of Observations = 23 Blind Sample ID = T233 Mean = 3.18 % Relative Standard Deviation = 3.6 Number of Observations = 23 Blind Sample ID = T231 Mean = 13.39 % Relative Standard Deviation = 4.1 Number of Observations = 22 Blind Sample ID = T229 Mean = 0.31 % Relative Standard Deviation = 8.8 Number of Observations = 18 Blind Sample ID = T227 Mean = 0.84 % Relative Standard Deviation = 9.3 Number of Observations = 19 Blind Sample ID = T225 Mean = 7.83 % Relative Standard Deviation = 3.5 Number of Observations = 9 Blind Sample ID = T223 Mean = 18.80 % Relative Standard Deviation = 4.2 Number of Observations = 9 Blind Sample ID = T221
The SGPlot Procedure


- Barium, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01005, MCode: PLM43
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 21.54 % Relative Standard Deviation = 2.8 Number of Observations = 10 Blind Sample ID = T251 Mean = 111.50 % Relative Standard Deviation = 2.8 Number of Observations = 14 Blind Sample ID = T249 Mean = 79.50 % Relative Standard Deviation = 3.4 Number of Observations = 28 Blind Sample ID = T247 Mean = 60.70 % Relative Standard Deviation = 2.4 Number of Observations = 32 Blind Sample ID = T245 Mean = 46.44 % Relative Standard Deviation = 2.8 Number of Observations = 40 Blind Sample ID = T243 Mean = 54.04 % Relative Standard Deviation = 2.0 Number of Observations = 39 Blind Sample ID = T241 Mean = 21.61 % Relative Standard Deviation = 3.5 Number of Observations = 42 Blind Sample ID = T239 Mean = 57.67 % Relative Standard Deviation = 2.4 Number of Observations = 47 Blind Sample ID = T237 Mean = 51.63 % Relative Standard Deviation = 2.4 Number of Observations = 47 Blind Sample ID = T235 Mean = 27.47 % Relative Standard Deviation = 2.5 Number of Observations = 47 Blind Sample ID = T233 Mean = 89.23 % Relative Standard Deviation = 3.1 Number of Observations = 37 Blind Sample ID = T231 Mean = 76.44 % Relative Standard Deviation = 3.7 Number of Observations = 39 Blind Sample ID = T229 Mean = 27.36 % Relative Standard Deviation = 2.4 Number of Observations = 26 Blind Sample ID = T227 Mean = 119.25 % Relative Standard Deviation = 4.4 Number of Observations = 31 Blind Sample ID = T225 Mean = 8.00 % Relative Standard Deviation = 3.6 Number of Observations = 14 Blind Sample ID = T223 Mean = 28.21 % Relative Standard Deviation = 3.4 Number of Observations = 13 Blind Sample ID = T221 Mean = 57.58 % Relative Standard Deviation = 76.0 Number of Observations = 16 Blind Sample ID =
The SGPlot Procedure


- Barium, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01005, MCode: PLA11
Dates: 11/08/18 through 10/30/24
Open Data Set

Mean = 22.75 % Relative Standard Deviation = 1.7 Number of Observations = 4 Blind Sample ID = T251 Mean = 115.33 % Relative Standard Deviation = 1.7 Number of Observations = 3 Blind Sample ID = T249 Mean = 79.26 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = T247 Mean = 61.95 % Relative Standard Deviation = 1.4 Number of Observations = 8 Blind Sample ID = T245 Mean = 46.29 % Relative Standard Deviation = 1.7 Number of Observations = 12 Blind Sample ID = T243 Mean = 56.28 % Relative Standard Deviation = 1.6 Number of Observations = 12 Blind Sample ID = T241 Mean = 21.73 % Relative Standard Deviation = 2.8 Number of Observations = 12 Blind Sample ID = T239 Mean = 59.74 % Relative Standard Deviation = 1.7 Number of Observations = 12 Blind Sample ID = T237 Mean = 53.32 % Relative Standard Deviation = 1.6 Number of Observations = 12 Blind Sample ID = T235 Mean = 28.54 % Relative Standard Deviation = 1.7 Number of Observations = 12 Blind Sample ID = T233 Mean = 90.06 % Relative Standard Deviation = 1.8 Number of Observations = 12 Blind Sample ID = T231 Mean = 78.12 % Relative Standard Deviation = 2.8 Number of Observations = 10 Blind Sample ID = T229 Mean = 28.39 % Relative Standard Deviation = 0.8 Number of Observations = 8 Blind Sample ID = T227 Mean = 117.53 % Relative Standard Deviation = 2.3 Number of Observations = 8 Blind Sample ID = T225 Mean = 8.78 % Relative Standard Deviation = 1.2 Number of Observations = 3 Blind Sample ID = T223 Mean = 29.78 % Relative Standard Deviation = 2.3 Number of Observations = 3 Blind Sample ID = T221
The SGPlot Procedure


- Barium, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01007, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 22.16 % Relative Standard Deviation = 3.1 Number of Observations = 6 Blind Sample ID = T251 Mean = 115.71 % Relative Standard Deviation = 3.8 Number of Observations = 6 Blind Sample ID = T249 Mean = 78.28 % Relative Standard Deviation = 2.7 Number of Observations = 14 Blind Sample ID = T247 Mean = 60.13 % Relative Standard Deviation = 4.3 Number of Observations = 16 Blind Sample ID = T245 Mean = 45.02 % Relative Standard Deviation = 3.8 Number of Observations = 22 Blind Sample ID = T243 Mean = 53.46 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = T241 Mean = 20.96 % Relative Standard Deviation = 3.2 Number of Observations = 24 Blind Sample ID = T239 Mean = 56.70 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = T237 Mean = 51.22 % Relative Standard Deviation = 2.4 Number of Observations = 23 Blind Sample ID = T235 Mean = 27.37 % Relative Standard Deviation = 2.4 Number of Observations = 23 Blind Sample ID = T233 Mean = 90.92 % Relative Standard Deviation = 2.9 Number of Observations = 21 Blind Sample ID = T231 Mean = 76.38 % Relative Standard Deviation = 2.9 Number of Observations = 21 Blind Sample ID = T229 Mean = 27.22 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = T227 Mean = 120.11 % Relative Standard Deviation = 3.4 Number of Observations = 15 Blind Sample ID = T225 Mean = 8.20 % Relative Standard Deviation = 3.6 Number of Observations = 7 Blind Sample ID = T223 Mean = 28.89 % Relative Standard Deviation = 1.5 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Beryllium, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01010, MCode: PLM43
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 0.09 % Relative Standard Deviation = 7.0 Number of Observations = 10 Blind Sample ID = T251 Mean = 0.08 % Relative Standard Deviation = 10.6 Number of Observations = 14 Blind Sample ID = T249 Mean = 0.18 % Relative Standard Deviation = 5.5 Number of Observations = 28 Blind Sample ID = T247 Mean = 0.14 % Relative Standard Deviation = 5.1 Number of Observations = 32 Blind Sample ID = T245 Mean = 0.20 % Relative Standard Deviation = 6.6 Number of Observations = 40 Blind Sample ID = T243 Mean = 0.40 % Relative Standard Deviation = 4.0 Number of Observations = 39 Blind Sample ID = T241 Mean = 0.81 % Relative Standard Deviation = 4.0 Number of Observations = 42 Blind Sample ID = T239 Mean = 0.43 % Relative Standard Deviation = 4.2 Number of Observations = 47 Blind Sample ID = T237 Mean = 0.06 % Relative Standard Deviation = 5.0 Number of Observations = 47 Blind Sample ID = T235 Mean = 0.28 % Relative Standard Deviation = 4.6 Number of Observations = 47 Blind Sample ID = T233 Mean = 0.36 % Relative Standard Deviation = 6.2 Number of Observations = 37 Blind Sample ID = T231 Mean = 1.16 % Relative Standard Deviation = 9.3 Number of Observations = 39 Blind Sample ID = T229 Mean = 0.69 % Relative Standard Deviation = 4.9 Number of Observations = 26 Blind Sample ID = T227 Mean = 0.97 % Relative Standard Deviation = 7.5 Number of Observations = 31 Blind Sample ID = T225 Mean = 0.54 % Relative Standard Deviation = 4.6 Number of Observations = 14 Blind Sample ID = T223 Mean = 0.39 % Relative Standard Deviation = 6.4 Number of Observations = 13 Blind Sample ID = T221 Mean = 0.11 % Relative Standard Deviation = 56.2 Number of Observations = 11 Blind Sample ID =
The SGPlot Procedure


- Beryllium, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01012, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 0.09 % Relative Standard Deviation = 5.2 Number of Observations = 6 Blind Sample ID = T251 Mean = 0.08 % Relative Standard Deviation = 8.6 Number of Observations = 6 Blind Sample ID = T249 Mean = 0.19 % Relative Standard Deviation = 4.1 Number of Observations = 14 Blind Sample ID = T247 Mean = 0.14 % Relative Standard Deviation = 7.8 Number of Observations = 16 Blind Sample ID = T245 Mean = 0.20 % Relative Standard Deviation = 8.6 Number of Observations = 22 Blind Sample ID = T243 Mean = 0.39 % Relative Standard Deviation = 3.9 Number of Observations = 24 Blind Sample ID = T241 Mean = 0.77 % Relative Standard Deviation = 6.9 Number of Observations = 24 Blind Sample ID = T239 Mean = 0.42 % Relative Standard Deviation = 5.0 Number of Observations = 24 Blind Sample ID = T237 Mean = 0.05 % Relative Standard Deviation = 7.1 Number of Observations = 23 Blind Sample ID = T235 Mean = 0.27 % Relative Standard Deviation = 5.6 Number of Observations = 23 Blind Sample ID = T233 Mean = 0.35 % Relative Standard Deviation = 6.9 Number of Observations = 21 Blind Sample ID = T231 Mean = 1.15 % Relative Standard Deviation = 6.2 Number of Observations = 21 Blind Sample ID = T229 Mean = 0.65 % Relative Standard Deviation = 5.6 Number of Observations = 16 Blind Sample ID = T227 Mean = 1.05 % Relative Standard Deviation = 5.6 Number of Observations = 15 Blind Sample ID = T225 Mean = 0.55 % Relative Standard Deviation = 3.5 Number of Observations = 7 Blind Sample ID = T223 Mean = 0.38 % Relative Standard Deviation = 7.8 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Boron, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01020, MCode: PLM40
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 92.15 % Relative Standard Deviation = 5.3 Number of Observations = 10 Blind Sample ID = T251 Mean = 220.63 % Relative Standard Deviation = 4.7 Number of Observations = 14 Blind Sample ID = T249 Mean = 157.71 % Relative Standard Deviation = 5.7 Number of Observations = 28 Blind Sample ID = T247 Mean = 8.46 % Relative Standard Deviation = 8.2 Number of Observations = 32 Blind Sample ID = T245 Mean = 315.50 % Relative Standard Deviation = 4.1 Number of Observations = 34 Blind Sample ID = T243 Mean = 9.18 % Relative Standard Deviation = 9.5 Number of Observations = 39 Blind Sample ID = T241 Mean = 257.01 % Relative Standard Deviation = 4.0 Number of Observations = 42 Blind Sample ID = T239 Mean = 11.28 % Relative Standard Deviation = 6.2 Number of Observations = 47 Blind Sample ID = T237 Mean = 21.65 % Relative Standard Deviation = 5.5 Number of Observations = 47 Blind Sample ID = T235 Mean = 21.99 % Relative Standard Deviation = 5.2 Number of Observations = 47 Blind Sample ID = T233 Mean = 26.59 % Relative Standard Deviation = 7.9 Number of Observations = 37 Blind Sample ID = T231 Mean = 112.18 % Relative Standard Deviation = 9.3 Number of Observations = 39 Blind Sample ID = T229 Mean = 184.92 % Relative Standard Deviation = 7.5 Number of Observations = 31 Blind Sample ID = T225 Mean = 12.67 % Relative Standard Deviation = 10.1 Number of Observations = 14 Blind Sample ID = T223 Mean = 19.21 % Relative Standard Deviation = 7.9 Number of Observations = 13 Blind Sample ID = T221
The SGPlot Procedure


- Boron, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01020, MCode: PLA13
Dates: 10/29/18 through 11/07/24
Open Data Set

Mean = 95.22 % Relative Standard Deviation = 2.1 Number of Observations = 7 Blind Sample ID = T251 Mean = 234.58 % Relative Standard Deviation = 3.1 Number of Observations = 5 Blind Sample ID = T249 Mean = 154.33 % Relative Standard Deviation = 2.4 Number of Observations = 20 Blind Sample ID = T247 Mean = 9.15 % Relative Standard Deviation = 3.7 Number of Observations = 17 Blind Sample ID = T245 Mean = 295.73 % Relative Standard Deviation = 2.1 Number of Observations = 25 Blind Sample ID = T243 Mean = 9.89 % Relative Standard Deviation = 4.5 Number of Observations = 32 Blind Sample ID = T241 Mean = 237.80 % Relative Standard Deviation = 2.7 Number of Observations = 36 Blind Sample ID = T239 Mean = 12.25 % Relative Standard Deviation = 4.3 Number of Observations = 30 Blind Sample ID = T237 Mean = 22.97 % Relative Standard Deviation = 2.9 Number of Observations = 34 Blind Sample ID = T235 Mean = 23.15 % Relative Standard Deviation = 4.5 Number of Observations = 27 Blind Sample ID = T233 Mean = 27.16 % Relative Standard Deviation = 3.4 Number of Observations = 29 Blind Sample ID = T231 Mean = 126.37 % Relative Standard Deviation = 2.2 Number of Observations = 33 Blind Sample ID = T229 Mean = 4.51 % Relative Standard Deviation = 11.5 Number of Observations = 20 Blind Sample ID = T227 Mean = 202.58 % Relative Standard Deviation = 2.0 Number of Observations = 18 Blind Sample ID = T225 Mean = 13.68 % Relative Standard Deviation = 3.9 Number of Observations = 12 Blind Sample ID = T223 Mean = 20.09 % Relative Standard Deviation = 4.3 Number of Observations = 10 Blind Sample ID = T221
The SGPlot Procedure


- Boron, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01022, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 92.42 % Relative Standard Deviation = 2.3 Number of Observations = 6 Blind Sample ID = T251 Mean = 230.51 % Relative Standard Deviation = 2.8 Number of Observations = 5 Blind Sample ID = T249 Mean = 158.97 % Relative Standard Deviation = 5.1 Number of Observations = 14 Blind Sample ID = T247 Mean = 8.54 % Relative Standard Deviation = 8.2 Number of Observations = 16 Blind Sample ID = T245 Mean = 308.23 % Relative Standard Deviation = 5.6 Number of Observations = 20 Blind Sample ID = T243 Mean = 9.13 % Relative Standard Deviation = 8.9 Number of Observations = 24 Blind Sample ID = T241 Mean = 242.36 % Relative Standard Deviation = 7.8 Number of Observations = 24 Blind Sample ID = T239 Mean = 11.14 % Relative Standard Deviation = 12.3 Number of Observations = 24 Blind Sample ID = T237 Mean = 21.47 % Relative Standard Deviation = 5.3 Number of Observations = 23 Blind Sample ID = T235 Mean = 20.68 % Relative Standard Deviation = 6.0 Number of Observations = 23 Blind Sample ID = T233 Mean = 25.95 % Relative Standard Deviation = 6.1 Number of Observations = 21 Blind Sample ID = T231 Mean = 115.63 % Relative Standard Deviation = 6.3 Number of Observations = 21 Blind Sample ID = T229 Mean = 213.52 % Relative Standard Deviation = 5.6 Number of Observations = 15 Blind Sample ID = T225 Mean = 13.47 % Relative Standard Deviation = 6.0 Number of Observations = 7 Blind Sample ID = T223 Mean = 18.85 % Relative Standard Deviation = 3.8 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Cadmium, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01025, MCode: PLM43
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 1.15 % Relative Standard Deviation = 2.1 Number of Observations = 10 Blind Sample ID = T251 Mean = 1.65 % Relative Standard Deviation = 2.3 Number of Observations = 14 Blind Sample ID = T249 Mean = 1.83 % Relative Standard Deviation = 2.2 Number of Observations = 28 Blind Sample ID = T247 Mean = 0.37 % Relative Standard Deviation = 3.0 Number of Observations = 32 Blind Sample ID = T245 Mean = 1.55 % Relative Standard Deviation = 3.3 Number of Observations = 40 Blind Sample ID = T243 Mean = 0.46 % Relative Standard Deviation = 3.5 Number of Observations = 39 Blind Sample ID = T241 Mean = 7.06 % Relative Standard Deviation = 3.0 Number of Observations = 42 Blind Sample ID = T239 Mean = 0.48 % Relative Standard Deviation = 2.4 Number of Observations = 47 Blind Sample ID = T237 Mean = 0.03 % Relative Standard Deviation = 16.0 Number of Observations = 14 Blind Sample ID = T235 Mean = 2.82 % Relative Standard Deviation = 1.8 Number of Observations = 47 Blind Sample ID = T233 Mean = 0.41 % Relative Standard Deviation = 4.4 Number of Observations = 37 Blind Sample ID = T231 Mean = 1.91 % Relative Standard Deviation = 2.1 Number of Observations = 39 Blind Sample ID = T229 Mean = 0.48 % Relative Standard Deviation = 2.3 Number of Observations = 26 Blind Sample ID = T227 Mean = 0.99 % Relative Standard Deviation = 4.5 Number of Observations = 31 Blind Sample ID = T225 Mean = 3.83 % Relative Standard Deviation = 1.6 Number of Observations = 14 Blind Sample ID = T223 Mean = 0.04 % Relative Standard Deviation = 17.6 Number of Observations = 13 Blind Sample ID = T221 Mean = 1.08 % Relative Standard Deviation = 63.3 Number of Observations = 15 Blind Sample ID =
The SGPlot Procedure


- Cadmium, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01027, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 1.17 % Relative Standard Deviation = 2.6 Number of Observations = 6 Blind Sample ID = T251 Mean = 1.71 % Relative Standard Deviation = 2.7 Number of Observations = 6 Blind Sample ID = T249 Mean = 1.87 % Relative Standard Deviation = 3.1 Number of Observations = 14 Blind Sample ID = T247 Mean = 0.37 % Relative Standard Deviation = 3.0 Number of Observations = 15 Blind Sample ID = T245 Mean = 1.56 % Relative Standard Deviation = 4.3 Number of Observations = 22 Blind Sample ID = T243 Mean = 0.46 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = T241 Mean = 7.11 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = T239 Mean = 0.48 % Relative Standard Deviation = 2.8 Number of Observations = 24 Blind Sample ID = T237 Mean = 0.03 % Relative Standard Deviation = 8.7 Number of Observations = 6 Blind Sample ID = T235 Mean = 2.84 % Relative Standard Deviation = 3.0 Number of Observations = 23 Blind Sample ID = T233 Mean = 0.42 % Relative Standard Deviation = 2.4 Number of Observations = 23 Blind Sample ID = T231 Mean = 1.91 % Relative Standard Deviation = 3.1 Number of Observations = 22 Blind Sample ID = T229 Mean = 0.48 % Relative Standard Deviation = 3.0 Number of Observations = 18 Blind Sample ID = T227 Mean = 0.97 % Relative Standard Deviation = 3.1 Number of Observations = 19 Blind Sample ID = T225 Mean = 3.89 % Relative Standard Deviation = 1.8 Number of Observations = 9 Blind Sample ID = T223 Mean = 0.04 % Relative Standard Deviation = 5.1 Number of Observations = 9 Blind Sample ID = T221
The SGPlot Procedure


- Chromium, fltd, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01030, MCode: PLM10
Dates: 10/12/18 through 10/23/24
Open Data Set

Mean = 2.36 % Relative Standard Deviation = 10.0 Number of Observations = 10 Blind Sample ID = T251 Mean = 3.53 % Relative Standard Deviation = 7.4 Number of Observations = 14 Blind Sample ID = T249 Mean = 8.21 % Relative Standard Deviation = 10.0 Number of Observations = 28 Blind Sample ID = T247 Mean = 2.39 % Relative Standard Deviation = 8.4 Number of Observations = 32 Blind Sample ID = T245 Mean = 0.94 % Relative Standard Deviation = 25.7 Number of Observations = 39 Blind Sample ID = T243 Mean = 3.05 % Relative Standard Deviation = 10.0 Number of Observations = 41 Blind Sample ID = T239 Mean = 2.78 % Relative Standard Deviation = 7.4 Number of Observations = 46 Blind Sample ID = T237 Mean = 1.92 % Relative Standard Deviation = 10.7 Number of Observations = 47 Blind Sample ID = T235 Mean = 1.89 % Relative Standard Deviation = 7.8 Number of Observations = 47 Blind Sample ID = T233 Mean = 0.67 % Relative Standard Deviation = 21.2 Number of Observations = 4 Blind Sample ID = T231 Mean = 7.65 % Relative Standard Deviation = 5.9 Number of Observations = 39 Blind Sample ID = T229 Mean = 0.60 % Relative Standard Deviation = 10.3 Number of Observations = 13 Blind Sample ID = T227 Mean = 1.46 % Relative Standard Deviation = 19.5 Number of Observations = 26 Blind Sample ID = T225 Mean = 0.58 % Relative Standard Deviation = 22.4 Number of Observations = 14 Blind Sample ID = T223 Mean = 1.77 % Relative Standard Deviation = 10.5 Number of Observations = 12 Blind Sample ID = T221 Mean = 2.34 % Relative Standard Deviation = 54.7 Number of Observations = 10 Blind Sample ID =
The SGPlot Procedure


- Chromium, unfltd, ICP-OES, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01034, MCode: PLO07
Dates: 11/06/19 through 10/04/24
Open Data Set

Mean = 2.72 % Relative Standard Deviation = 10.1 Number of Observations = 4 Blind Sample ID = T251 Mean = 2.97 % Relative Standard Deviation = 6.7 Number of Observations = 3 Blind Sample ID = T249 Mean = 8.30 % Relative Standard Deviation = 6.3 Number of Observations = 8 Blind Sample ID = T247 Mean = 2.46 % Relative Standard Deviation = 11.1 Number of Observations = 8 Blind Sample ID = T245 Mean = 2.42 % Relative Standard Deviation = 16.7 Number of Observations = 12 Blind Sample ID = T239 Mean = 2.83 % Relative Standard Deviation = 10.5 Number of Observations = 12 Blind Sample ID = T237 Mean = 1.87 % Relative Standard Deviation = 10.6 Number of Observations = 12 Blind Sample ID = T235 Mean = 1.62 % Relative Standard Deviation = 17.9 Number of Observations = 12 Blind Sample ID = T233 Mean = 7.04 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = T229 Mean = 1.03 % Relative Standard Deviation = 7.4 Number of Observations = 5 Blind Sample ID = T225
The SGPlot Procedure


- Chromium, unfltd, cICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01034, MCode: PLM77
Dates: 10/29/18 through 09/19/24
Open Data Set

Mean = 2.21 % Relative Standard Deviation = 6.2 Number of Observations = 6 Blind Sample ID = T251 Mean = 3.49 % Relative Standard Deviation = 2.1 Number of Observations = 6 Blind Sample ID = T249 Mean = 7.51 % Relative Standard Deviation = 2.7 Number of Observations = 14 Blind Sample ID = T247 Mean = 2.42 % Relative Standard Deviation = 5.8 Number of Observations = 16 Blind Sample ID = T245 Mean = 0.92 % Relative Standard Deviation = 14.9 Number of Observations = 22 Blind Sample ID = T243 Mean = 2.98 % Relative Standard Deviation = 7.6 Number of Observations = 24 Blind Sample ID = T239 Mean = 2.80 % Relative Standard Deviation = 7.6 Number of Observations = 24 Blind Sample ID = T237 Mean = 1.80 % Relative Standard Deviation = 7.4 Number of Observations = 23 Blind Sample ID = T235 Mean = 1.79 % Relative Standard Deviation = 8.4 Number of Observations = 23 Blind Sample ID = T233 Mean = 0.63 % Relative Standard Deviation = 33.7 Number of Observations = 3 Blind Sample ID = T231 Mean = 7.42 % Relative Standard Deviation = 5.2 Number of Observations = 21 Blind Sample ID = T229 Mean = 0.69 % Relative Standard Deviation = 8.5 Number of Observations = 5 Blind Sample ID = T227 Mean = 1.47 % Relative Standard Deviation = 23.2 Number of Observations = 14 Blind Sample ID = T225 Mean = 0.73 % Relative Standard Deviation = 51.0 Number of Observations = 7 Blind Sample ID = T223 Mean = 2.02 % Relative Standard Deviation = 16.0 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Cobalt, fltd, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01035, MCode: PLM10
Dates: 10/12/18 through 10/11/24
Open Data Set

Mean = 0.24 % Relative Standard Deviation = 6.1 Number of Observations = 10 Blind Sample ID = T251 Mean = 2.21 % Relative Standard Deviation = 3.1 Number of Observations = 14 Blind Sample ID = T249 Mean = 1.84 % Relative Standard Deviation = 2.3 Number of Observations = 28 Blind Sample ID = T247 Mean = 0.70 % Relative Standard Deviation = 3.7 Number of Observations = 32 Blind Sample ID = T245 Mean = 0.48 % Relative Standard Deviation = 4.7 Number of Observations = 40 Blind Sample ID = T243 Mean = 1.57 % Relative Standard Deviation = 2.4 Number of Observations = 39 Blind Sample ID = T241 Mean = 3.10 % Relative Standard Deviation = 2.8 Number of Observations = 42 Blind Sample ID = T239 Mean = 0.39 % Relative Standard Deviation = 4.9 Number of Observations = 47 Blind Sample ID = T237 Mean = 0.38 % Relative Standard Deviation = 5.1 Number of Observations = 47 Blind Sample ID = T235 Mean = 1.47 % Relative Standard Deviation = 4.3 Number of Observations = 47 Blind Sample ID = T233 Mean = 1.48 % Relative Standard Deviation = 4.3 Number of Observations = 37 Blind Sample ID = T231 Mean = 2.98 % Relative Standard Deviation = 4.3 Number of Observations = 39 Blind Sample ID = T229 Mean = 0.24 % Relative Standard Deviation = 6.2 Number of Observations = 27 Blind Sample ID = T227 Mean = 1.01 % Relative Standard Deviation = 5.8 Number of Observations = 31 Blind Sample ID = T225 Mean = 3.18 % Relative Standard Deviation = 4.8 Number of Observations = 14 Blind Sample ID = T223 Mean = 2.23 % Relative Standard Deviation = 4.1 Number of Observations = 13 Blind Sample ID = T221
The SGPlot Procedure


- Cobalt, unfltd, cICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01037, MCode: PLM77
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 0.24 % Relative Standard Deviation = 5.5 Number of Observations = 6 Blind Sample ID = T251 Mean = 2.20 % Relative Standard Deviation = 4.4 Number of Observations = 6 Blind Sample ID = T249 Mean = 1.83 % Relative Standard Deviation = 3.5 Number of Observations = 14 Blind Sample ID = T247 Mean = 0.71 % Relative Standard Deviation = 5.4 Number of Observations = 16 Blind Sample ID = T245 Mean = 0.48 % Relative Standard Deviation = 3.9 Number of Observations = 22 Blind Sample ID = T243 Mean = 1.57 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = T241 Mean = 3.11 % Relative Standard Deviation = 3.6 Number of Observations = 24 Blind Sample ID = T239 Mean = 0.39 % Relative Standard Deviation = 4.7 Number of Observations = 24 Blind Sample ID = T237 Mean = 0.38 % Relative Standard Deviation = 4.3 Number of Observations = 23 Blind Sample ID = T235 Mean = 1.46 % Relative Standard Deviation = 3.5 Number of Observations = 23 Blind Sample ID = T233 Mean = 1.51 % Relative Standard Deviation = 4.3 Number of Observations = 21 Blind Sample ID = T231 Mean = 3.00 % Relative Standard Deviation = 2.6 Number of Observations = 21 Blind Sample ID = T229 Mean = 0.25 % Relative Standard Deviation = 4.9 Number of Observations = 16 Blind Sample ID = T227 Mean = 1.03 % Relative Standard Deviation = 4.4 Number of Observations = 15 Blind Sample ID = T225 Mean = 3.34 % Relative Standard Deviation = 3.0 Number of Observations = 7 Blind Sample ID = T223 Mean = 2.39 % Relative Standard Deviation = 3.3 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Copper, fltd, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01040, MCode: PLM10
Dates: 10/12/18 through 10/11/24
Open Data Set

Mean = 1.29 % Relative Standard Deviation = 6.7 Number of Observations = 10 Blind Sample ID = T251 Mean = 9.40 % Relative Standard Deviation = 2.4 Number of Observations = 14 Blind Sample ID = T249 Mean = 7.28 % Relative Standard Deviation = 3.6 Number of Observations = 28 Blind Sample ID = T247 Mean = 6.26 % Relative Standard Deviation = 3.6 Number of Observations = 32 Blind Sample ID = T245 Mean = 5.80 % Relative Standard Deviation = 4.0 Number of Observations = 40 Blind Sample ID = T243 Mean = 2.24 % Relative Standard Deviation = 4.2 Number of Observations = 39 Blind Sample ID = T241 Mean = 1.61 % Relative Standard Deviation = 8.4 Number of Observations = 42 Blind Sample ID = T239 Mean = 8.41 % Relative Standard Deviation = 3.0 Number of Observations = 47 Blind Sample ID = T237 Mean = 6.99 % Relative Standard Deviation = 5.3 Number of Observations = 46 Blind Sample ID = T235 Mean = 3.89 % Relative Standard Deviation = 4.5 Number of Observations = 47 Blind Sample ID = T233 Mean = 6.25 % Relative Standard Deviation = 4.4 Number of Observations = 37 Blind Sample ID = T231 Mean = 21.93 % Relative Standard Deviation = 5.3 Number of Observations = 39 Blind Sample ID = T229 Mean = 8.18 % Relative Standard Deviation = 6.6 Number of Observations = 24 Blind Sample ID = T227 Mean = 2.64 % Relative Standard Deviation = 8.6 Number of Observations = 31 Blind Sample ID = T225 Mean = 3.76 % Relative Standard Deviation = 5.5 Number of Observations = 13 Blind Sample ID = T223 Mean = 3.74 % Relative Standard Deviation = 6.8 Number of Observations = 12 Blind Sample ID = T221
The SGPlot Procedure


- Copper, unfltd, cICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01042, MCode: PLM77
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 1.27 % Relative Standard Deviation = 3.7 Number of Observations = 6 Blind Sample ID = T251 Mean = 9.70 % Relative Standard Deviation = 2.6 Number of Observations = 5 Blind Sample ID = T249 Mean = 7.56 % Relative Standard Deviation = 6.4 Number of Observations = 14 Blind Sample ID = T247 Mean = 6.20 % Relative Standard Deviation = 3.5 Number of Observations = 15 Blind Sample ID = T245 Mean = 5.94 % Relative Standard Deviation = 3.6 Number of Observations = 21 Blind Sample ID = T243 Mean = 2.24 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = T241 Mean = 1.64 % Relative Standard Deviation = 8.0 Number of Observations = 24 Blind Sample ID = T239 Mean = 8.50 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = T237 Mean = 6.94 % Relative Standard Deviation = 3.5 Number of Observations = 23 Blind Sample ID = T235 Mean = 3.95 % Relative Standard Deviation = 5.8 Number of Observations = 23 Blind Sample ID = T233 Mean = 6.39 % Relative Standard Deviation = 3.8 Number of Observations = 23 Blind Sample ID = T231 Mean = 22.25 % Relative Standard Deviation = 3.3 Number of Observations = 22 Blind Sample ID = T229 Mean = 8.44 % Relative Standard Deviation = 5.3 Number of Observations = 18 Blind Sample ID = T227 Mean = 2.57 % Relative Standard Deviation = 8.9 Number of Observations = 18 Blind Sample ID = T225 Mean = 4.01 % Relative Standard Deviation = 6.1 Number of Observations = 6 Blind Sample ID = T223 Mean = 3.91 % Relative Standard Deviation = 4.6 Number of Observations = 8 Blind Sample ID = T221
The SGPlot Procedure


- Iron, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01046, MCode: PLA11
Dates: 10/29/18 through 11/07/24
Open Data Set

Mean = 743.64 % Relative Standard Deviation = 1.7 Number of Observations = 17 Blind Sample ID = T251 Mean = 78.79 % Relative Standard Deviation = 1.4 Number of Observations = 17 Blind Sample ID = T249 Mean = 493.86 % Relative Standard Deviation = 1.8 Number of Observations = 39 Blind Sample ID = T247 Mean = 382.84 % Relative Standard Deviation = 1.5 Number of Observations = 32 Blind Sample ID = T245 Mean = 644.88 % Relative Standard Deviation = 1.7 Number of Observations = 48 Blind Sample ID = T243 Mean = 236.48 % Relative Standard Deviation = 2.1 Number of Observations = 59 Blind Sample ID = T241 Mean = 90.29 % Relative Standard Deviation = 2.6 Number of Observations = 54 Blind Sample ID = T239 Mean = 629.74 % Relative Standard Deviation = 2.4 Number of Observations = 54 Blind Sample ID = T237 Mean = 709.56 % Relative Standard Deviation = 1.6 Number of Observations = 57 Blind Sample ID = T235 Mean = 280.19 % Relative Standard Deviation = 2.5 Number of Observations = 45 Blind Sample ID = T233 Mean = 253.16 % Relative Standard Deviation = 2.0 Number of Observations = 47 Blind Sample ID = T231 Mean = 855.17 % Relative Standard Deviation = 1.9 Number of Observations = 54 Blind Sample ID = T229 Mean = 333.38 % Relative Standard Deviation = 1.9 Number of Observations = 32 Blind Sample ID = T227 Mean = 40.49 % Relative Standard Deviation = 11.0 Number of Observations = 34 Blind Sample ID = T225 Mean = 376.02 % Relative Standard Deviation = 1.7 Number of Observations = 18 Blind Sample ID = T223 Mean = 328.57 % Relative Standard Deviation = 1.3 Number of Observations = 15 Blind Sample ID = T221
The SGPlot Procedure


- Iron, unfltd, ICP-OES, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01045, MCode: PLO07
Dates: 10/24/18 through 10/04/24
Open Data Set

Mean = 734.31 % Relative Standard Deviation = 2.1 Number of Observations = 7 Blind Sample ID = T251 Mean = 78.25 % Relative Standard Deviation = 3.1 Number of Observations = 5 Blind Sample ID = T249 Mean = 492.73 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = T247 Mean = 385.34 % Relative Standard Deviation = 2.6 Number of Observations = 12 Blind Sample ID = T245 Mean = 643.71 % Relative Standard Deviation = 2.2 Number of Observations = 17 Blind Sample ID = T243 Mean = 238.60 % Relative Standard Deviation = 2.2 Number of Observations = 24 Blind Sample ID = T241 Mean = 91.09 % Relative Standard Deviation = 5.2 Number of Observations = 24 Blind Sample ID = T239 Mean = 630.59 % Relative Standard Deviation = 2.6 Number of Observations = 18 Blind Sample ID = T237 Mean = 698.20 % Relative Standard Deviation = 2.5 Number of Observations = 22 Blind Sample ID = T235 Mean = 278.37 % Relative Standard Deviation = 3.9 Number of Observations = 18 Blind Sample ID = T233 Mean = 254.19 % Relative Standard Deviation = 1.1 Number of Observations = 18 Blind Sample ID = T231 Mean = 842.74 % Relative Standard Deviation = 2.3 Number of Observations = 21 Blind Sample ID = T229 Mean = 332.79 % Relative Standard Deviation = 1.8 Number of Observations = 16 Blind Sample ID = T227 Mean = 40.38 % Relative Standard Deviation = 6.6 Number of Observations = 12 Blind Sample ID = T225 Mean = 374.69 % Relative Standard Deviation = 1.5 Number of Observations = 7 Blind Sample ID = T223 Mean = 330.22 % Relative Standard Deviation = 1.4 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Lead, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01049, MCode: PLM43
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 0.48 % Relative Standard Deviation = 4.0 Number of Observations = 10 Blind Sample ID = T251 Mean = 0.82 % Relative Standard Deviation = 4.9 Number of Observations = 14 Blind Sample ID = T249 Mean = 1.15 % Relative Standard Deviation = 5.1 Number of Observations = 28 Blind Sample ID = T247 Mean = 7.85 % Relative Standard Deviation = 2.7 Number of Observations = 32 Blind Sample ID = T245 Mean = 4.24 % Relative Standard Deviation = 4.0 Number of Observations = 40 Blind Sample ID = T243 Mean = 1.79 % Relative Standard Deviation = 3.6 Number of Observations = 39 Blind Sample ID = T241 Mean = 2.57 % Relative Standard Deviation = 4.3 Number of Observations = 42 Blind Sample ID = T239 Mean = 6.69 % Relative Standard Deviation = 4.2 Number of Observations = 47 Blind Sample ID = T237 Mean = 1.20 % Relative Standard Deviation = 3.2 Number of Observations = 47 Blind Sample ID = T235 Mean = 0.34 % Relative Standard Deviation = 3.2 Number of Observations = 47 Blind Sample ID = T233 Mean = 3.60 % Relative Standard Deviation = 4.7 Number of Observations = 37 Blind Sample ID = T231 Mean = 13.51 % Relative Standard Deviation = 4.4 Number of Observations = 39 Blind Sample ID = T229 Mean = 6.71 % Relative Standard Deviation = 3.4 Number of Observations = 26 Blind Sample ID = T227 Mean = 4.27 % Relative Standard Deviation = 8.2 Number of Observations = 31 Blind Sample ID = T225 Mean = 0.56 % Relative Standard Deviation = 5.4 Number of Observations = 14 Blind Sample ID = T223 Mean = 0.45 % Relative Standard Deviation = 5.5 Number of Observations = 13 Blind Sample ID = T221
The SGPlot Procedure


- Lead, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01051, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 0.48 % Relative Standard Deviation = 1.9 Number of Observations = 6 Blind Sample ID = T251 Mean = 0.85 % Relative Standard Deviation = 3.1 Number of Observations = 6 Blind Sample ID = T249 Mean = 1.18 % Relative Standard Deviation = 3.1 Number of Observations = 14 Blind Sample ID = T247 Mean = 7.81 % Relative Standard Deviation = 3.6 Number of Observations = 16 Blind Sample ID = T245 Mean = 4.35 % Relative Standard Deviation = 3.9 Number of Observations = 22 Blind Sample ID = T243 Mean = 1.76 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = T241 Mean = 2.62 % Relative Standard Deviation = 4.4 Number of Observations = 24 Blind Sample ID = T239 Mean = 6.53 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = T237 Mean = 1.19 % Relative Standard Deviation = 2.7 Number of Observations = 23 Blind Sample ID = T235 Mean = 0.34 % Relative Standard Deviation = 2.9 Number of Observations = 23 Blind Sample ID = T233 Mean = 3.66 % Relative Standard Deviation = 2.8 Number of Observations = 23 Blind Sample ID = T231 Mean = 13.57 % Relative Standard Deviation = 2.3 Number of Observations = 22 Blind Sample ID = T229 Mean = 6.71 % Relative Standard Deviation = 5.2 Number of Observations = 18 Blind Sample ID = T227 Mean = 4.35 % Relative Standard Deviation = 1.9 Number of Observations = 19 Blind Sample ID = T225 Mean = 0.60 % Relative Standard Deviation = 3.6 Number of Observations = 9 Blind Sample ID = T223 Mean = 0.50 % Relative Standard Deviation = 5.5 Number of Observations = 9 Blind Sample ID = T221
The SGPlot Procedure


- Lithium, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01130, MCode: PLM40
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 2.42 % Relative Standard Deviation = 4.8 Number of Observations = 10 Blind Sample ID = T251 Mean = 54.56 % Relative Standard Deviation = 4.8 Number of Observations = 14 Blind Sample ID = T249 Mean = 53.33 % Relative Standard Deviation = 5.9 Number of Observations = 28 Blind Sample ID = T247 Mean = 10.06 % Relative Standard Deviation = 3.1 Number of Observations = 32 Blind Sample ID = T245 Mean = 2.15 % Relative Standard Deviation = 6.6 Number of Observations = 38 Blind Sample ID = T243 Mean = 12.48 % Relative Standard Deviation = 3.4 Number of Observations = 39 Blind Sample ID = T241 Mean = 2.74 % Relative Standard Deviation = 7.2 Number of Observations = 42 Blind Sample ID = T239 Mean = 18.50 % Relative Standard Deviation = 3.7 Number of Observations = 47 Blind Sample ID = T237 Mean = 3.84 % Relative Standard Deviation = 4.6 Number of Observations = 47 Blind Sample ID = T235 Mean = 2.54 % Relative Standard Deviation = 4.3 Number of Observations = 47 Blind Sample ID = T233 Mean = 63.82 % Relative Standard Deviation = 7.3 Number of Observations = 37 Blind Sample ID = T231 Mean = 23.91 % Relative Standard Deviation = 8.9 Number of Observations = 39 Blind Sample ID = T229 Mean = 0.72 % Relative Standard Deviation = 6.1 Number of Observations = 26 Blind Sample ID = T227 Mean = 9.18 % Relative Standard Deviation = 9.0 Number of Observations = 31 Blind Sample ID = T225 Mean = 1.21 % Relative Standard Deviation = 3.9 Number of Observations = 14 Blind Sample ID = T223 Mean = 2.56 % Relative Standard Deviation = 5.8 Number of Observations = 13 Blind Sample ID = T221
The SGPlot Procedure


- Lithium, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01132, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 2.43 % Relative Standard Deviation = 3.4 Number of Observations = 6 Blind Sample ID = T251 Mean = 56.74 % Relative Standard Deviation = 3.7 Number of Observations = 6 Blind Sample ID = T249 Mean = 52.93 % Relative Standard Deviation = 4.8 Number of Observations = 14 Blind Sample ID = T247 Mean = 9.75 % Relative Standard Deviation = 5.0 Number of Observations = 16 Blind Sample ID = T245 Mean = 1.96 % Relative Standard Deviation = 7.8 Number of Observations = 21 Blind Sample ID = T243 Mean = 11.97 % Relative Standard Deviation = 4.7 Number of Observations = 24 Blind Sample ID = T241 Mean = 2.43 % Relative Standard Deviation = 8.5 Number of Observations = 24 Blind Sample ID = T239 Mean = 17.58 % Relative Standard Deviation = 5.6 Number of Observations = 24 Blind Sample ID = T237 Mean = 3.68 % Relative Standard Deviation = 4.2 Number of Observations = 23 Blind Sample ID = T235 Mean = 2.37 % Relative Standard Deviation = 4.7 Number of Observations = 23 Blind Sample ID = T233 Mean = 63.39 % Relative Standard Deviation = 6.0 Number of Observations = 20 Blind Sample ID = T231 Mean = 24.05 % Relative Standard Deviation = 6.2 Number of Observations = 21 Blind Sample ID = T229 Mean = 0.67 % Relative Standard Deviation = 7.7 Number of Observations = 16 Blind Sample ID = T227 Mean = 9.70 % Relative Standard Deviation = 3.7 Number of Observations = 15 Blind Sample ID = T225 Mean = 1.20 % Relative Standard Deviation = 2.5 Number of Observations = 7 Blind Sample ID = T223 Mean = 2.40 % Relative Standard Deviation = 4.4 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Manganese, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01056, MCode: PLM43
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 24.38 % Relative Standard Deviation = 4.2 Number of Observations = 10 Blind Sample ID = T251 Mean = 235.13 % Relative Standard Deviation = 4.3 Number of Observations = 14 Blind Sample ID = T249 Mean = 136.68 % Relative Standard Deviation = 5.2 Number of Observations = 28 Blind Sample ID = T247 Mean = 20.18 % Relative Standard Deviation = 4.3 Number of Observations = 32 Blind Sample ID = T245 Mean = 383.88 % Relative Standard Deviation = 4.7 Number of Observations = 40 Blind Sample ID = T243 Mean = 17.97 % Relative Standard Deviation = 4.1 Number of Observations = 39 Blind Sample ID = T241 Mean = 8.02 % Relative Standard Deviation = 3.7 Number of Observations = 42 Blind Sample ID = T239 Mean = 123.09 % Relative Standard Deviation = 3.1 Number of Observations = 47 Blind Sample ID = T237 Mean = 49.76 % Relative Standard Deviation = 3.9 Number of Observations = 47 Blind Sample ID = T235 Mean = 18.56 % Relative Standard Deviation = 3.4 Number of Observations = 47 Blind Sample ID = T233 Mean = 28.09 % Relative Standard Deviation = 4.8 Number of Observations = 37 Blind Sample ID = T231 Mean = 688.46 % Relative Standard Deviation = 5.0 Number of Observations = 39 Blind Sample ID = T229 Mean = 67.54 % Relative Standard Deviation = 5.1 Number of Observations = 26 Blind Sample ID = T227 Mean = 40.98 % Relative Standard Deviation = 5.8 Number of Observations = 31 Blind Sample ID = T225 Mean = 26.91 % Relative Standard Deviation = 4.1 Number of Observations = 14 Blind Sample ID = T223 Mean = 32.36 % Relative Standard Deviation = 5.4 Number of Observations = 13 Blind Sample ID = T221
The SGPlot Procedure


- Manganese, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01056, MCode: PLA11
Dates: 10/29/18 through 11/07/24
Open Data Set

Mean = 24.24 % Relative Standard Deviation = 1.8 Number of Observations = 17 Blind Sample ID = T251 Mean = 231.21 % Relative Standard Deviation = 1.4 Number of Observations = 17 Blind Sample ID = T249 Mean = 134.28 % Relative Standard Deviation = 2.0 Number of Observations = 39 Blind Sample ID = T247 Mean = 20.61 % Relative Standard Deviation = 1.6 Number of Observations = 32 Blind Sample ID = T245 Mean = 376.08 % Relative Standard Deviation = 1.6 Number of Observations = 48 Blind Sample ID = T243 Mean = 18.13 % Relative Standard Deviation = 1.9 Number of Observations = 59 Blind Sample ID = T241 Mean = 7.93 % Relative Standard Deviation = 3.7 Number of Observations = 54 Blind Sample ID = T239 Mean = 121.26 % Relative Standard Deviation = 1.9 Number of Observations = 54 Blind Sample ID = T237 Mean = 49.85 % Relative Standard Deviation = 1.5 Number of Observations = 57 Blind Sample ID = T235 Mean = 18.82 % Relative Standard Deviation = 2.0 Number of Observations = 45 Blind Sample ID = T233 Mean = 28.66 % Relative Standard Deviation = 1.8 Number of Observations = 47 Blind Sample ID = T231 Mean = 681.72 % Relative Standard Deviation = 1.4 Number of Observations = 54 Blind Sample ID = T229 Mean = 68.56 % Relative Standard Deviation = 1.8 Number of Observations = 32 Blind Sample ID = T227 Mean = 43.30 % Relative Standard Deviation = 1.4 Number of Observations = 34 Blind Sample ID = T225 Mean = 28.06 % Relative Standard Deviation = 1.9 Number of Observations = 18 Blind Sample ID = T223 Mean = 34.22 % Relative Standard Deviation = 1.5 Number of Observations = 15 Blind Sample ID = T221
The SGPlot Procedure


- Manganese, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01055, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 23.64 % Relative Standard Deviation = 3.4 Number of Observations = 6 Blind Sample ID = T251 Mean = 246.45 % Relative Standard Deviation = 2.2 Number of Observations = 6 Blind Sample ID = T249 Mean = 143.88 % Relative Standard Deviation = 5.8 Number of Observations = 14 Blind Sample ID = T247 Mean = 20.12 % Relative Standard Deviation = 4.4 Number of Observations = 16 Blind Sample ID = T245 Mean = 395.81 % Relative Standard Deviation = 3.8 Number of Observations = 22 Blind Sample ID = T243 Mean = 17.08 % Relative Standard Deviation = 5.0 Number of Observations = 24 Blind Sample ID = T241 Mean = 8.07 % Relative Standard Deviation = 5.7 Number of Observations = 23 Blind Sample ID = T239 Mean = 120.94 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = T237 Mean = 48.58 % Relative Standard Deviation = 2.9 Number of Observations = 23 Blind Sample ID = T235 Mean = 18.06 % Relative Standard Deviation = 2.8 Number of Observations = 23 Blind Sample ID = T233 Mean = 27.75 % Relative Standard Deviation = 4.7 Number of Observations = 21 Blind Sample ID = T231 Mean = 689.07 % Relative Standard Deviation = 4.2 Number of Observations = 21 Blind Sample ID = T229 Mean = 67.19 % Relative Standard Deviation = 4.6 Number of Observations = 16 Blind Sample ID = T227 Mean = 44.54 % Relative Standard Deviation = 4.5 Number of Observations = 15 Blind Sample ID = T225 Mean = 26.90 % Relative Standard Deviation = 1.6 Number of Observations = 7 Blind Sample ID = T223 Mean = 32.57 % Relative Standard Deviation = 3.4 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Manganese, unfltd, ICP-OES, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01055, MCode: PLO07
Dates: 10/24/18 through 10/04/24
Open Data Set

Mean = 24.00 % Relative Standard Deviation = 1.6 Number of Observations = 7 Blind Sample ID = T251 Mean = 229.78 % Relative Standard Deviation = 2.6 Number of Observations = 5 Blind Sample ID = T249 Mean = 131.60 % Relative Standard Deviation = 2.3 Number of Observations = 16 Blind Sample ID = T247 Mean = 20.58 % Relative Standard Deviation = 2.9 Number of Observations = 12 Blind Sample ID = T245 Mean = 371.46 % Relative Standard Deviation = 1.7 Number of Observations = 18 Blind Sample ID = T243 Mean = 17.97 % Relative Standard Deviation = 2.6 Number of Observations = 23 Blind Sample ID = T241 Mean = 7.67 % Relative Standard Deviation = 5.9 Number of Observations = 24 Blind Sample ID = T239 Mean = 119.51 % Relative Standard Deviation = 2.9 Number of Observations = 18 Blind Sample ID = T237 Mean = 49.04 % Relative Standard Deviation = 2.6 Number of Observations = 22 Blind Sample ID = T235 Mean = 18.80 % Relative Standard Deviation = 1.6 Number of Observations = 18 Blind Sample ID = T233 Mean = 28.75 % Relative Standard Deviation = 1.5 Number of Observations = 18 Blind Sample ID = T231 Mean = 678.70 % Relative Standard Deviation = 1.9 Number of Observations = 21 Blind Sample ID = T229 Mean = 68.61 % Relative Standard Deviation = 1.5 Number of Observations = 16 Blind Sample ID = T227 Mean = 43.16 % Relative Standard Deviation = 2.4 Number of Observations = 12 Blind Sample ID = T225 Mean = 28.02 % Relative Standard Deviation = 1.7 Number of Observations = 7 Blind Sample ID = T223 Mean = 34.26 % Relative Standard Deviation = 1.6 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Mercury, fltd, CVAF -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 71890, MCode: CV014
Dates: 11/07/18 through 10/30/24
Open Data Set

Mean = 0.03 % Relative Standard Deviation = 11.2 Number of Observations = 4 Blind Sample ID = T251 Mean = 0.02 % Relative Standard Deviation = 13.6 Number of Observations = 4 Blind Sample ID = T249 Mean = 0.03 % Relative Standard Deviation = 12.5 Number of Observations = 8 Blind Sample ID = T247 Mean = 0.04 % Relative Standard Deviation = 8.1 Number of Observations = 10 Blind Sample ID = T245 Mean = 0.02 % Relative Standard Deviation = 20.6 Number of Observations = 12 Blind Sample ID = T243 Mean = 0.04 % Relative Standard Deviation = 6.9 Number of Observations = 12 Blind Sample ID = T241 Mean = 0.03 % Relative Standard Deviation = 46.6 Number of Observations = 12 Blind Sample ID = T239 Mean = 0.03 % Relative Standard Deviation = 41.1 Number of Observations = 12 Blind Sample ID = T237 Mean = 0.02 % Relative Standard Deviation = 9.5 Number of Observations = 6 Blind Sample ID = T235 Mean = 0.04 % Relative Standard Deviation = 17.7 Number of Observations = 10 Blind Sample ID = T233 Mean = 0.02 % Relative Standard Deviation = 50.2 Number of Observations = 10 Blind Sample ID = T231 Mean = 0.03 % Relative Standard Deviation = 29.9 Number of Observations = 6 Blind Sample ID = T229 Mean = 0.04 % Relative Standard Deviation = 1.9 Number of Observations = 3 Blind Sample ID = T223 Mean = 0.02 % Relative Standard Deviation = 4.6 Number of Observations = 3 Blind Sample ID = T221 Mean = 0.02 % Relative Standard Deviation = 24.1 Number of Observations = 9 Blind Sample ID =
The SGPlot Procedure


- Mercury, unfltd, CVAF -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 71900, MCode: CV018
Dates: 11/06/18 through 10/29/24
Open Data Set

Mean = 0.02 % Relative Standard Deviation = 12.7 Number of Observations = 4 Blind Sample ID = T251 Mean = 0.02 % Relative Standard Deviation = 10.8 Number of Observations = 4 Blind Sample ID = T249 Mean = 0.03 % Relative Standard Deviation = 12.1 Number of Observations = 8 Blind Sample ID = T247 Mean = 0.04 % Relative Standard Deviation = 4.7 Number of Observations = 9 Blind Sample ID = T245 Mean = 0.02 % Relative Standard Deviation = 24.1 Number of Observations = 11 Blind Sample ID = T243 Mean = 0.04 % Relative Standard Deviation = 8.0 Number of Observations = 12 Blind Sample ID = T241 Mean = 0.03 % Relative Standard Deviation = 48.5 Number of Observations = 12 Blind Sample ID = T239 Mean = 0.03 % Relative Standard Deviation = 49.0 Number of Observations = 12 Blind Sample ID = T237 Mean = 0.02 % Relative Standard Deviation = 5.4 Number of Observations = 6 Blind Sample ID = T235 Mean = 0.04 % Relative Standard Deviation = 14.7 Number of Observations = 10 Blind Sample ID = T233 Mean = 0.03 % Relative Standard Deviation = 47.9 Number of Observations = 10 Blind Sample ID = T231 Mean = 0.03 % Relative Standard Deviation = 23.4 Number of Observations = 7 Blind Sample ID = T229 Mean = 0.04 % Relative Standard Deviation = 3.5 Number of Observations = 3 Blind Sample ID = T223 Mean = 0.02 % Relative Standard Deviation = 6.3 Number of Observations = 3 Blind Sample ID = T221
The SGPlot Procedure


- Molybdenum, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01060, MCode: PLM43
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 0.76 % Relative Standard Deviation = 6.1 Number of Observations = 10 Blind Sample ID = T251 Mean = 2.69 % Relative Standard Deviation = 2.4 Number of Observations = 14 Blind Sample ID = T249 Mean = 0.46 % Relative Standard Deviation = 4.9 Number of Observations = 28 Blind Sample ID = T247 Mean = 0.55 % Relative Standard Deviation = 4.6 Number of Observations = 32 Blind Sample ID = T245 Mean = 1.57 % Relative Standard Deviation = 6.4 Number of Observations = 36 Blind Sample ID = T243 Mean = 0.54 % Relative Standard Deviation = 2.8 Number of Observations = 39 Blind Sample ID = T241 Mean = 2.52 % Relative Standard Deviation = 4.1 Number of Observations = 41 Blind Sample ID = T239 Mean = 2.03 % Relative Standard Deviation = 2.6 Number of Observations = 47 Blind Sample ID = T237 Mean = 0.25 % Relative Standard Deviation = 8.0 Number of Observations = 47 Blind Sample ID = T235 Mean = 3.81 % Relative Standard Deviation = 4.0 Number of Observations = 46 Blind Sample ID = T233 Mean = 0.74 % Relative Standard Deviation = 3.0 Number of Observations = 37 Blind Sample ID = T231 Mean = 11.53 % Relative Standard Deviation = 3.9 Number of Observations = 39 Blind Sample ID = T229 Mean = 0.25 % Relative Standard Deviation = 4.9 Number of Observations = 23 Blind Sample ID = T227 Mean = 1.83 % Relative Standard Deviation = 4.0 Number of Observations = 31 Blind Sample ID = T225 Mean = 0.49 % Relative Standard Deviation = 4.8 Number of Observations = 14 Blind Sample ID = T223 Mean = 0.53 % Relative Standard Deviation = 3.8 Number of Observations = 13 Blind Sample ID = T221 Mean = 1.44 % Relative Standard Deviation = 73.8 Number of Observations = 16 Blind Sample ID =
The SGPlot Procedure


- Molybdenum, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01062, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 0.76 % Relative Standard Deviation = 2.4 Number of Observations = 6 Blind Sample ID = T251 Mean = 2.63 % Relative Standard Deviation = 2.3 Number of Observations = 6 Blind Sample ID = T249 Mean = 0.46 % Relative Standard Deviation = 3.9 Number of Observations = 14 Blind Sample ID = T247 Mean = 0.55 % Relative Standard Deviation = 3.3 Number of Observations = 14 Blind Sample ID = T245 Mean = 1.54 % Relative Standard Deviation = 2.6 Number of Observations = 21 Blind Sample ID = T243 Mean = 0.53 % Relative Standard Deviation = 3.0 Number of Observations = 22 Blind Sample ID = T241 Mean = 2.44 % Relative Standard Deviation = 4.7 Number of Observations = 23 Blind Sample ID = T239 Mean = 2.00 % Relative Standard Deviation = 3.8 Number of Observations = 23 Blind Sample ID = T237 Mean = 0.25 % Relative Standard Deviation = 7.2 Number of Observations = 22 Blind Sample ID = T235 Mean = 3.75 % Relative Standard Deviation = 3.6 Number of Observations = 23 Blind Sample ID = T233 Mean = 0.74 % Relative Standard Deviation = 3.8 Number of Observations = 21 Blind Sample ID = T231 Mean = 11.36 % Relative Standard Deviation = 5.2 Number of Observations = 21 Blind Sample ID = T229 Mean = 0.25 % Relative Standard Deviation = 6.0 Number of Observations = 15 Blind Sample ID = T227 Mean = 1.88 % Relative Standard Deviation = 6.4 Number of Observations = 15 Blind Sample ID = T225 Mean = 0.51 % Relative Standard Deviation = 9.3 Number of Observations = 7 Blind Sample ID = T223 Mean = 0.55 % Relative Standard Deviation = 5.0 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Nickel, fltd, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01065, MCode: PLM10
Dates: 10/12/18 through 10/11/24
Open Data Set

Mean = 1.75 % Relative Standard Deviation = 7.4 Number of Observations = 10 Blind Sample ID = T251 Mean = 3.72 % Relative Standard Deviation = 4.1 Number of Observations = 14 Blind Sample ID = T249 Mean = 3.24 % Relative Standard Deviation = 4.8 Number of Observations = 28 Blind Sample ID = T247 Mean = 0.58 % Relative Standard Deviation = 10.7 Number of Observations = 31 Blind Sample ID = T245 Mean = 1.60 % Relative Standard Deviation = 8.8 Number of Observations = 40 Blind Sample ID = T243 Mean = 0.56 % Relative Standard Deviation = 7.3 Number of Observations = 38 Blind Sample ID = T241 Mean = 3.82 % Relative Standard Deviation = 3.4 Number of Observations = 42 Blind Sample ID = T239 Mean = 1.29 % Relative Standard Deviation = 5.6 Number of Observations = 47 Blind Sample ID = T237 Mean = 1.13 % Relative Standard Deviation = 6.1 Number of Observations = 47 Blind Sample ID = T235 Mean = 1.96 % Relative Standard Deviation = 5.5 Number of Observations = 47 Blind Sample ID = T233 Mean = 0.64 % Relative Standard Deviation = 12.2 Number of Observations = 37 Blind Sample ID = T231 Mean = 9.11 % Relative Standard Deviation = 3.7 Number of Observations = 39 Blind Sample ID = T229 Mean = 0.67 % Relative Standard Deviation = 20.8 Number of Observations = 26 Blind Sample ID = T227 Mean = 7.13 % Relative Standard Deviation = 5.3 Number of Observations = 31 Blind Sample ID = T225 Mean = 0.52 % Relative Standard Deviation = 10.7 Number of Observations = 14 Blind Sample ID = T223 Mean = 0.53 % Relative Standard Deviation = 26.6 Number of Observations = 13 Blind Sample ID = T221
The SGPlot Procedure


- Nickel, unfltd, cICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01067, MCode: PLM77
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 1.71 % Relative Standard Deviation = 7.3 Number of Observations = 6 Blind Sample ID = T251 Mean = 3.90 % Relative Standard Deviation = 4.0 Number of Observations = 6 Blind Sample ID = T249 Mean = 3.28 % Relative Standard Deviation = 5.5 Number of Observations = 14 Blind Sample ID = T247 Mean = 0.56 % Relative Standard Deviation = 10.4 Number of Observations = 15 Blind Sample ID = T245 Mean = 1.59 % Relative Standard Deviation = 8.0 Number of Observations = 22 Blind Sample ID = T243 Mean = 0.52 % Relative Standard Deviation = 11.1 Number of Observations = 24 Blind Sample ID = T241 Mean = 3.75 % Relative Standard Deviation = 4.7 Number of Observations = 24 Blind Sample ID = T239 Mean = 1.31 % Relative Standard Deviation = 8.0 Number of Observations = 24 Blind Sample ID = T237 Mean = 1.13 % Relative Standard Deviation = 9.4 Number of Observations = 23 Blind Sample ID = T235 Mean = 1.94 % Relative Standard Deviation = 3.7 Number of Observations = 23 Blind Sample ID = T233 Mean = 0.62 % Relative Standard Deviation = 7.8 Number of Observations = 21 Blind Sample ID = T231 Mean = 9.11 % Relative Standard Deviation = 2.9 Number of Observations = 21 Blind Sample ID = T229 Mean = 0.67 % Relative Standard Deviation = 4.2 Number of Observations = 16 Blind Sample ID = T227 Mean = 6.94 % Relative Standard Deviation = 5.8 Number of Observations = 15 Blind Sample ID = T225 Mean = 0.56 % Relative Standard Deviation = 6.1 Number of Observations = 6 Blind Sample ID = T223 Mean = 0.57 % Relative Standard Deviation = 24.6 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Selenium, fltd, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01145, MCode: PLM10
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 3.85 % Relative Standard Deviation = 2.3 Number of Observations = 10 Blind Sample ID = T251 Mean = 1.92 % Relative Standard Deviation = 1.8 Number of Observations = 14 Blind Sample ID = T249 Mean = 2.42 % Relative Standard Deviation = 3.5 Number of Observations = 28 Blind Sample ID = T247 Mean = 2.12 % Relative Standard Deviation = 3.3 Number of Observations = 32 Blind Sample ID = T245 Mean = 2.13 % Relative Standard Deviation = 5.3 Number of Observations = 40 Blind Sample ID = T243 Mean = 0.52 % Relative Standard Deviation = 7.4 Number of Observations = 39 Blind Sample ID = T241 Mean = 4.55 % Relative Standard Deviation = 4.1 Number of Observations = 42 Blind Sample ID = T239 Mean = 0.91 % Relative Standard Deviation = 5.4 Number of Observations = 47 Blind Sample ID = T237 Mean = 2.18 % Relative Standard Deviation = 3.0 Number of Observations = 47 Blind Sample ID = T235 Mean = 4.44 % Relative Standard Deviation = 3.1 Number of Observations = 47 Blind Sample ID = T233 Mean = 0.57 % Relative Standard Deviation = 5.6 Number of Observations = 37 Blind Sample ID = T231 Mean = 5.09 % Relative Standard Deviation = 3.0 Number of Observations = 39 Blind Sample ID = T229 Mean = 0.11 % Relative Standard Deviation = 14.5 Number of Observations = 27 Blind Sample ID = T227 Mean = 5.62 % Relative Standard Deviation = 2.8 Number of Observations = 31 Blind Sample ID = T225 Mean = 11.01 % Relative Standard Deviation = 3.1 Number of Observations = 14 Blind Sample ID = T223 Mean = 3.86 % Relative Standard Deviation = 2.0 Number of Observations = 13 Blind Sample ID = T221
The SGPlot Procedure


- Selenium, unfltd, cICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01147, MCode: PLM77
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 3.77 % Relative Standard Deviation = 0.8 Number of Observations = 6 Blind Sample ID = T251 Mean = 1.87 % Relative Standard Deviation = 4.0 Number of Observations = 6 Blind Sample ID = T249 Mean = 2.32 % Relative Standard Deviation = 2.6 Number of Observations = 14 Blind Sample ID = T247 Mean = 2.09 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = T245 Mean = 2.04 % Relative Standard Deviation = 1.9 Number of Observations = 22 Blind Sample ID = T243 Mean = 0.52 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = T241 Mean = 4.45 % Relative Standard Deviation = 3.9 Number of Observations = 24 Blind Sample ID = T239 Mean = 0.89 % Relative Standard Deviation = 2.9 Number of Observations = 24 Blind Sample ID = T237 Mean = 2.12 % Relative Standard Deviation = 2.2 Number of Observations = 23 Blind Sample ID = T235 Mean = 4.34 % Relative Standard Deviation = 2.2 Number of Observations = 23 Blind Sample ID = T233 Mean = 0.55 % Relative Standard Deviation = 3.3 Number of Observations = 23 Blind Sample ID = T231 Mean = 4.96 % Relative Standard Deviation = 2.0 Number of Observations = 22 Blind Sample ID = T229 Mean = 0.10 % Relative Standard Deviation = 6.0 Number of Observations = 18 Blind Sample ID = T227 Mean = 5.66 % Relative Standard Deviation = 2.5 Number of Observations = 19 Blind Sample ID = T225 Mean = 11.23 % Relative Standard Deviation = 3.0 Number of Observations = 9 Blind Sample ID = T223 Mean = 3.82 % Relative Standard Deviation = 2.2 Number of Observations = 9 Blind Sample ID = T221
The SGPlot Procedure


- Silver, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01075, MCode: PLM43
Dates: 10/12/18 through 10/25/24
Open Data Set

Mean = 1.07 % Relative Standard Deviation = 16.1 Number of Observations = 10 Blind Sample ID = T251 Mean = 1.46 % Relative Standard Deviation = 17.2 Number of Observations = 12 Blind Sample ID = T249 Mean = 1.34 % Relative Standard Deviation = 28.7 Number of Observations = 28 Blind Sample ID = T247 Mean = 2.15 % Relative Standard Deviation = 19.1 Number of Observations = 32 Blind Sample ID = T245 Mean = 4.45 % Relative Standard Deviation = 9.4 Number of Observations = 37 Blind Sample ID = T243 Mean = 2.25 % Relative Standard Deviation = 21.0 Number of Observations = 42 Blind Sample ID = T239 Mean = 2.34 % Relative Standard Deviation = 15.0 Number of Observations = 47 Blind Sample ID = T233 Mean = 3.23 % Relative Standard Deviation = 14.8 Number of Observations = 39 Blind Sample ID = T229 Mean = 25.27 % Relative Standard Deviation = 7.1 Number of Observations = 25 Blind Sample ID = T227 Mean = 2.85 % Relative Standard Deviation = 14.0 Number of Observations = 25 Blind Sample ID = T225 Mean = 7.50 % Relative Standard Deviation = 10.2 Number of Observations = 13 Blind Sample ID = T223 Mean = 14.39 % Relative Standard Deviation = 6.8 Number of Observations = 12 Blind Sample ID = T221 Mean = 1.39 % Relative Standard Deviation = 17.6 Number of Observations = 9 Blind Sample ID =
The SGPlot Procedure


- Silver, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01077, MCode: PLM78
Dates: 10/29/18 through 09/19/24
Open Data Set

Mean = 1.10 % Relative Standard Deviation = 0.9 Number of Observations = 6 Blind Sample ID = T251 Mean = 1.52 % Relative Standard Deviation = 2.4 Number of Observations = 6 Blind Sample ID = T249 Mean = 1.18 % Relative Standard Deviation = 2.9 Number of Observations = 14 Blind Sample ID = T247 Mean = 2.34 % Relative Standard Deviation = 2.2 Number of Observations = 16 Blind Sample ID = T245 Mean = 4.49 % Relative Standard Deviation = 3.7 Number of Observations = 22 Blind Sample ID = T243 Mean = 1.90 % Relative Standard Deviation = 5.0 Number of Observations = 24 Blind Sample ID = T239 Mean = 0.12 % Relative Standard Deviation = 22.3 Number of Observations = 24 Blind Sample ID = T237 Mean = 2.47 % Relative Standard Deviation = 2.3 Number of Observations = 23 Blind Sample ID = T233 Mean = 0.04 % Relative Standard Deviation = 12.8 Number of Observations = 21 Blind Sample ID = T231 Mean = 3.47 % Relative Standard Deviation = 1.5 Number of Observations = 21 Blind Sample ID = T229 Mean = 24.27 % Relative Standard Deviation = 5.1 Number of Observations = 16 Blind Sample ID = T227 Mean = 2.45 % Relative Standard Deviation = 2.8 Number of Observations = 15 Blind Sample ID = T225 Mean = 7.21 % Relative Standard Deviation = 3.3 Number of Observations = 7 Blind Sample ID = T223 Mean = 14.18 % Relative Standard Deviation = 4.5 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Strontium, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01080, MCode: PLM40
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 28.92 % Relative Standard Deviation = 7.9 Number of Observations = 10 Blind Sample ID = T251 Mean = 441.89 % Relative Standard Deviation = 1.8 Number of Observations = 14 Blind Sample ID = T249 Mean = 537.02 % Relative Standard Deviation = 4.8 Number of Observations = 28 Blind Sample ID = T247 Mean = 285.79 % Relative Standard Deviation = 3.2 Number of Observations = 32 Blind Sample ID = T245 Mean = 108.79 % Relative Standard Deviation = 7.1 Number of Observations = 40 Blind Sample ID = T243 Mean = 168.53 % Relative Standard Deviation = 2.9 Number of Observations = 39 Blind Sample ID = T241 Mean = 42.02 % Relative Standard Deviation = 5.1 Number of Observations = 42 Blind Sample ID = T239 Mean = 209.39 % Relative Standard Deviation = 2.6 Number of Observations = 47 Blind Sample ID = T237 Mean = 98.51 % Relative Standard Deviation = 4.5 Number of Observations = 47 Blind Sample ID = T235 Mean = 98.36 % Relative Standard Deviation = 3.8 Number of Observations = 47 Blind Sample ID = T233 Mean = 269.67 % Relative Standard Deviation = 3.6 Number of Observations = 37 Blind Sample ID = T231 Mean = 776.25 % Relative Standard Deviation = 4.4 Number of Observations = 39 Blind Sample ID = T229 Mean = 33.81 % Relative Standard Deviation = 3.6 Number of Observations = 27 Blind Sample ID = T227 Mean = 770.13 % Relative Standard Deviation = 4.1 Number of Observations = 31 Blind Sample ID = T225 Mean = 17.43 % Relative Standard Deviation = 3.3 Number of Observations = 14 Blind Sample ID = T223 Mean = 98.20 % Relative Standard Deviation = 3.8 Number of Observations = 13 Blind Sample ID = T221 Mean = 317.64 % Relative Standard Deviation = 63.0 Number of Observations = 16 Blind Sample ID =
The SGPlot Procedure


- Strontium, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01080, MCode: PLA11
Dates: 10/30/18 through 11/07/24
Open Data Set

Mean = 28.43 % Relative Standard Deviation = 1.0 Number of Observations = 7 Blind Sample ID = T251 Mean = 420.28 % Relative Standard Deviation = 1.4 Number of Observations = 5 Blind Sample ID = T249 Mean = 509.86 % Relative Standard Deviation = 2.6 Number of Observations = 16 Blind Sample ID = T247 Mean = 276.72 % Relative Standard Deviation = 1.8 Number of Observations = 12 Blind Sample ID = T245 Mean = 102.84 % Relative Standard Deviation = 1.5 Number of Observations = 18 Blind Sample ID = T243 Mean = 164.19 % Relative Standard Deviation = 1.8 Number of Observations = 24 Blind Sample ID = T241 Mean = 40.42 % Relative Standard Deviation = 1.8 Number of Observations = 24 Blind Sample ID = T239 Mean = 204.14 % Relative Standard Deviation = 1.6 Number of Observations = 18 Blind Sample ID = T237 Mean = 99.05 % Relative Standard Deviation = 2.2 Number of Observations = 22 Blind Sample ID = T235 Mean = 95.26 % Relative Standard Deviation = 2.4 Number of Observations = 18 Blind Sample ID = T233 Mean = 252.82 % Relative Standard Deviation = 2.1 Number of Observations = 18 Blind Sample ID = T231 Mean = 752.32 % Relative Standard Deviation = 2.8 Number of Observations = 21 Blind Sample ID = T229 Mean = 33.99 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = T227 Mean = 742.70 % Relative Standard Deviation = 1.4 Number of Observations = 12 Blind Sample ID = T225 Mean = 17.76 % Relative Standard Deviation = 1.1 Number of Observations = 7 Blind Sample ID = T223 Mean = 97.33 % Relative Standard Deviation = 2.2 Number of Observations = 5 Blind Sample ID = T221 Mean = 167.09 % Relative Standard Deviation = 55.8 Number of Observations = 18 Blind Sample ID =
The SGPlot Procedure


- Strontium, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01082, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 28.69 % Relative Standard Deviation = 3.3 Number of Observations = 6 Blind Sample ID = T251 Mean = 423.16 % Relative Standard Deviation = 1.7 Number of Observations = 6 Blind Sample ID = T249 Mean = 531.05 % Relative Standard Deviation = 4.7 Number of Observations = 14 Blind Sample ID = T247 Mean = 283.90 % Relative Standard Deviation = 3.6 Number of Observations = 16 Blind Sample ID = T245 Mean = 104.57 % Relative Standard Deviation = 3.5 Number of Observations = 22 Blind Sample ID = T243 Mean = 166.06 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = T241 Mean = 40.80 % Relative Standard Deviation = 7.6 Number of Observations = 24 Blind Sample ID = T239 Mean = 205.20 % Relative Standard Deviation = 3.6 Number of Observations = 24 Blind Sample ID = T237 Mean = 99.70 % Relative Standard Deviation = 3.4 Number of Observations = 23 Blind Sample ID = T235 Mean = 96.06 % Relative Standard Deviation = 3.8 Number of Observations = 23 Blind Sample ID = T233 Mean = 262.38 % Relative Standard Deviation = 3.2 Number of Observations = 21 Blind Sample ID = T231 Mean = 756.36 % Relative Standard Deviation = 4.5 Number of Observations = 21 Blind Sample ID = T229 Mean = 34.20 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = T227 Mean = 772.28 % Relative Standard Deviation = 4.1 Number of Observations = 15 Blind Sample ID = T225 Mean = 17.43 % Relative Standard Deviation = 4.2 Number of Observations = 7 Blind Sample ID = T223 Mean = 99.56 % Relative Standard Deviation = 3.3 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Thallium, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01057, MCode: PLM40
Dates: 10/12/18 through 10/03/24
Open Data Set

Mean = 1.15 % Relative Standard Deviation = 2.7 Number of Observations = 6 Blind Sample ID = T251 Mean = 0.15 % Relative Standard Deviation = 1.1 Number of Observations = 6 Blind Sample ID = T249 Mean = 1.73 % Relative Standard Deviation = 3.7 Number of Observations = 14 Blind Sample ID = T247 Mean = 0.26 % Relative Standard Deviation = 6.6 Number of Observations = 16 Blind Sample ID = T245 Mean = 0.98 % Relative Standard Deviation = 4.3 Number of Observations = 22 Blind Sample ID = T243 Mean = 0.73 % Relative Standard Deviation = 5.7 Number of Observations = 24 Blind Sample ID = T241 Mean = 3.70 % Relative Standard Deviation = 4.0 Number of Observations = 24 Blind Sample ID = T239 Mean = 5.72 % Relative Standard Deviation = 3.3 Number of Observations = 24 Blind Sample ID = T237 Mean = 1.87 % Relative Standard Deviation = 4.4 Number of Observations = 23 Blind Sample ID = T235 Mean = 2.16 % Relative Standard Deviation = 4.0 Number of Observations = 23 Blind Sample ID = T233 Mean = 2.81 % Relative Standard Deviation = 4.6 Number of Observations = 22 Blind Sample ID = T229 Mean = 4.52 % Relative Standard Deviation = 3.4 Number of Observations = 17 Blind Sample ID = T227 Mean = 6.03 % Relative Standard Deviation = 6.2 Number of Observations = 19 Blind Sample ID = T225 Mean = 5.49 % Relative Standard Deviation = 1.9 Number of Observations = 9 Blind Sample ID = T223 Mean = 3.18 % Relative Standard Deviation = 3.9 Number of Observations = 9 Blind Sample ID = T221 Mean = 0.84 % Relative Standard Deviation = 38.5 Number of Observations = 9 Blind Sample ID =
The SGPlot Procedure


- Thallium, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01059, MCode: PLM78
Dates: 10/26/23 through 09/25/24
Open Data Set

Mean = 1.15 % Relative Standard Deviation = 4.2 Number of Observations = 6 Blind Sample ID = T251 Mean = 0.14 % Relative Standard Deviation = 4.5 Number of Observations = 6 Blind Sample ID = T249 Mean = 1.70 % Relative Standard Deviation = 2.5 Number of Observations = 6 Blind Sample ID = T247 Mean = 0.27 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = T245 Mean = 0.96 % Relative Standard Deviation = 3.1 Number of Observations = 5 Blind Sample ID = T243 Mean = 0.76 % Relative Standard Deviation = 4.9 Number of Observations = 8 Blind Sample ID = T241
The SGPlot Procedure


- Uranium, fltd, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 22703, MCode: PLM43
Dates: 10/12/18 through 10/07/24
Open Data Set

Mean = 0.68 % Relative Standard Deviation = 3.8 Number of Observations = 10 Blind Sample ID = T251 Mean = 2.49 % Relative Standard Deviation = 4.5 Number of Observations = 14 Blind Sample ID = T249 Mean = 7.85 % Relative Standard Deviation = 5.6 Number of Observations = 28 Blind Sample ID = T247 Mean = 4.03 % Relative Standard Deviation = 3.7 Number of Observations = 32 Blind Sample ID = T245 Mean = 1.75 % Relative Standard Deviation = 5.3 Number of Observations = 40 Blind Sample ID = T243 Mean = 1.60 % Relative Standard Deviation = 4.1 Number of Observations = 39 Blind Sample ID = T241 Mean = 1.80 % Relative Standard Deviation = 5.1 Number of Observations = 42 Blind Sample ID = T239 Mean = 1.93 % Relative Standard Deviation = 5.4 Number of Observations = 46 Blind Sample ID = T237 Mean = 1.56 % Relative Standard Deviation = 6.0 Number of Observations = 47 Blind Sample ID = T235 Mean = 1.50 % Relative Standard Deviation = 5.2 Number of Observations = 47 Blind Sample ID = T233 Mean = 2.42 % Relative Standard Deviation = 6.4 Number of Observations = 37 Blind Sample ID = T231 Mean = 8.44 % Relative Standard Deviation = 7.1 Number of Observations = 39 Blind Sample ID = T229 Mean = 0.67 % Relative Standard Deviation = 5.1 Number of Observations = 26 Blind Sample ID = T227 Mean = 9.25 % Relative Standard Deviation = 5.6 Number of Observations = 31 Blind Sample ID = T225 Mean = 0.93 % Relative Standard Deviation = 7.5 Number of Observations = 14 Blind Sample ID = T223 Mean = 1.43 % Relative Standard Deviation = 6.4 Number of Observations = 13 Blind Sample ID = T221 Mean = 2.64 % Relative Standard Deviation = 50.9 Number of Observations = 16 Blind Sample ID =
The SGPlot Procedure


- Uranium, unfltd, ICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 28011, MCode: PLM78
Dates: 10/29/18 through 09/25/24
Open Data Set

Mean = 0.70 % Relative Standard Deviation = 4.8 Number of Observations = 6 Blind Sample ID = T251 Mean = 2.55 % Relative Standard Deviation = 4.9 Number of Observations = 6 Blind Sample ID = T249 Mean = 7.70 % Relative Standard Deviation = 4.2 Number of Observations = 14 Blind Sample ID = T247 Mean = 3.99 % Relative Standard Deviation = 4.9 Number of Observations = 16 Blind Sample ID = T245 Mean = 1.70 % Relative Standard Deviation = 6.4 Number of Observations = 22 Blind Sample ID = T243 Mean = 1.57 % Relative Standard Deviation = 5.2 Number of Observations = 24 Blind Sample ID = T241 Mean = 1.77 % Relative Standard Deviation = 5.4 Number of Observations = 22 Blind Sample ID = T239 Mean = 1.86 % Relative Standard Deviation = 5.3 Number of Observations = 24 Blind Sample ID = T237 Mean = 1.55 % Relative Standard Deviation = 5.5 Number of Observations = 23 Blind Sample ID = T235 Mean = 1.49 % Relative Standard Deviation = 5.2 Number of Observations = 23 Blind Sample ID = T233 Mean = 2.44 % Relative Standard Deviation = 6.0 Number of Observations = 21 Blind Sample ID = T231 Mean = 8.38 % Relative Standard Deviation = 5.6 Number of Observations = 21 Blind Sample ID = T229 Mean = 0.69 % Relative Standard Deviation = 5.7 Number of Observations = 16 Blind Sample ID = T227 Mean = 9.76 % Relative Standard Deviation = 7.3 Number of Observations = 15 Blind Sample ID = T225 Mean = 0.97 % Relative Standard Deviation = 8.5 Number of Observations = 7 Blind Sample ID = T223 Mean = 1.62 % Relative Standard Deviation = 8.5 Number of Observations = 5 Blind Sample ID = T221
The SGPlot Procedure


- Vanadium, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: , PCode: 01085, MCode: PLA11
Dates: 06/08/21 through 06/13/24
Open Data Set

The SGPlot Procedure


- Vanadium, fltd, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01085, MCode: PLM10
Dates: 10/12/18 through 10/11/24
Open Data Set

Mean = 0.91 % Relative Standard Deviation = 7.2 Number of Observations = 10 Blind Sample ID = T251 Mean = 6.08 % Relative Standard Deviation = 4.5 Number of Observations = 14 Blind Sample ID = T249 Mean = 10.49 % Relative Standard Deviation = 8.7 Number of Observations = 28 Blind Sample ID = T247 Mean = 0.97 % Relative Standard Deviation = 4.3 Number of Observations = 32 Blind Sample ID = T245 Mean = 3.32 % Relative Standard Deviation = 9.2 Number of Observations = 40 Blind Sample ID = T243 Mean = 2.05 % Relative Standard Deviation = 3.7 Number of Observations = 39 Blind Sample ID = T241 Mean = 4.38 % Relative Standard Deviation = 6.5 Number of Observations = 42 Blind Sample ID = T239 Mean = 0.72 % Relative Standard Deviation = 5.6 Number of Observations = 47 Blind Sample ID = T237 Mean = 3.80 % Relative Standard Deviation = 3.6 Number of Observations = 47 Blind Sample ID = T235 Mean = 2.65 % Relative Standard Deviation = 3.8 Number of Observations = 47 Blind Sample ID = T233 Mean = 3.04 % Relative Standard Deviation = 4.4 Number of Observations = 37 Blind Sample ID = T231 Mean = 27.57 % Relative Standard Deviation = 4.0 Number of Observations = 39 Blind Sample ID = T229 Mean = 3.26 % Relative Standard Deviation = 4.2 Number of Observations = 26 Blind Sample ID = T227 Mean = 13.86 % Relative Standard Deviation = 4.0 Number of Observations = 31 Blind Sample ID = T225 Mean = 5.76 % Relative Standard Deviation = 3.5 Number of Observations = 14 Blind Sample ID = T223 Mean = 0.51 % Relative Standard Deviation = 3.8 Number of Observations = 12 Blind Sample ID = T221
The SGPlot Procedure


- Vanadium, unfltd, cICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01087, MCode: PLM77
Dates: 10/26/23 through 09/25/24
Open Data Set

Mean = 0.84 % Relative Standard Deviation = 5.0 Number of Observations = 6 Blind Sample ID = T251 Mean = 5.94 % Relative Standard Deviation = 3.1 Number of Observations = 6 Blind Sample ID = T249 Mean = 9.85 % Relative Standard Deviation = 5.4 Number of Observations = 6 Blind Sample ID = T247 Mean = 0.93 % Relative Standard Deviation = 4.6 Number of Observations = 8 Blind Sample ID = T245 Mean = 3.34 % Relative Standard Deviation = 13.3 Number of Observations = 5 Blind Sample ID = T243 Mean = 1.98 % Relative Standard Deviation = 5.5 Number of Observations = 8 Blind Sample ID = T241
The SGPlot Procedure


- Zinc, fltd, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01090, MCode: PLA11
Dates: 11/08/18 through 10/30/24
Open Data Set

Mean = 9.65 % Relative Standard Deviation = 8.4 Number of Observations = 4 Blind Sample ID = T251 Mean = 276.43 % Relative Standard Deviation = 2.3 Number of Observations = 3 Blind Sample ID = T249 Mean = 11.73 % Relative Standard Deviation = 3.6 Number of Observations = 8 Blind Sample ID = T247 Mean = 169.13 % Relative Standard Deviation = 1.6 Number of Observations = 8 Blind Sample ID = T245 Mean = 455.62 % Relative Standard Deviation = 1.6 Number of Observations = 12 Blind Sample ID = T243 Mean = 198.22 % Relative Standard Deviation = 2.0 Number of Observations = 12 Blind Sample ID = T241 Mean = 14.66 % Relative Standard Deviation = 6.8 Number of Observations = 12 Blind Sample ID = T239 Mean = 268.07 % Relative Standard Deviation = 2.4 Number of Observations = 12 Blind Sample ID = T237 Mean = 26.55 % Relative Standard Deviation = 2.1 Number of Observations = 12 Blind Sample ID = T235 Mean = 20.13 % Relative Standard Deviation = 1.4 Number of Observations = 12 Blind Sample ID = T233 Mean = 188.92 % Relative Standard Deviation = 1.5 Number of Observations = 12 Blind Sample ID = T231 Mean = 232.56 % Relative Standard Deviation = 2.2 Number of Observations = 10 Blind Sample ID = T229 Mean = 208.16 % Relative Standard Deviation = 1.6 Number of Observations = 8 Blind Sample ID = T227 Mean = 10.90 % Relative Standard Deviation = 8.3 Number of Observations = 8 Blind Sample ID = T225 Mean = 13.08 % Relative Standard Deviation = 0.9 Number of Observations = 3 Blind Sample ID = T223 Mean = 26.76 % Relative Standard Deviation = 1.1 Number of Observations = 3 Blind Sample ID = T221
The SGPlot Procedure


- Zinc, fltd, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01090, MCode: PLM10
Dates: 10/23/18 through 10/17/24
Open Data Set

Mean = 10.47 % Relative Standard Deviation = 14.6 Number of Observations = 10 Blind Sample ID = T251 Mean = 277.15 % Relative Standard Deviation = 2.6 Number of Observations = 14 Blind Sample ID = T249 Mean = 10.65 % Relative Standard Deviation = 3.4 Number of Observations = 28 Blind Sample ID = T247 Mean = 170.66 % Relative Standard Deviation = 3.0 Number of Observations = 32 Blind Sample ID = T245 Mean = 467.62 % Relative Standard Deviation = 4.4 Number of Observations = 40 Blind Sample ID = T243 Mean = 194.93 % Relative Standard Deviation = 3.3 Number of Observations = 39 Blind Sample ID = T241 Mean = 13.56 % Relative Standard Deviation = 3.6 Number of Observations = 42 Blind Sample ID = T239 Mean = 265.94 % Relative Standard Deviation = 2.0 Number of Observations = 47 Blind Sample ID = T237 Mean = 25.54 % Relative Standard Deviation = 2.3 Number of Observations = 47 Blind Sample ID = T235 Mean = 19.51 % Relative Standard Deviation = 3.5 Number of Observations = 47 Blind Sample ID = T233 Mean = 188.38 % Relative Standard Deviation = 3.6 Number of Observations = 37 Blind Sample ID = T231 Mean = 235.58 % Relative Standard Deviation = 2.8 Number of Observations = 39 Blind Sample ID = T229 Mean = 203.89 % Relative Standard Deviation = 3.8 Number of Observations = 26 Blind Sample ID = T227 Mean = 10.74 % Relative Standard Deviation = 7.4 Number of Observations = 30 Blind Sample ID = T225 Mean = 12.68 % Relative Standard Deviation = 6.4 Number of Observations = 14 Blind Sample ID = T223 Mean = 25.06 % Relative Standard Deviation = 3.4 Number of Observations = 13 Blind Sample ID = T221
The SGPlot Procedure


- Zinc, unfltd, ICP-OES, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01092, MCode: PLO07
Dates: 09/19/19 through 10/04/24
Open Data Set

Mean = 8.75 % Relative Standard Deviation = 3.3 Number of Observations = 4 Blind Sample ID = T251 Mean = 262.00 % Relative Standard Deviation = 0.7 Number of Observations = 3 Blind Sample ID = T249 Mean = 9.55 % Relative Standard Deviation = 6.3 Number of Observations = 8 Blind Sample ID = T247 Mean = 162.80 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = T245 Mean = 439.91 % Relative Standard Deviation = 1.7 Number of Observations = 12 Blind Sample ID = T243 Mean = 191.15 % Relative Standard Deviation = 1.9 Number of Observations = 12 Blind Sample ID = T241 Mean = 12.53 % Relative Standard Deviation = 6.0 Number of Observations = 12 Blind Sample ID = T239 Mean = 256.84 % Relative Standard Deviation = 2.7 Number of Observations = 12 Blind Sample ID = T237 Mean = 25.14 % Relative Standard Deviation = 6.8 Number of Observations = 12 Blind Sample ID = T235 Mean = 19.02 % Relative Standard Deviation = 2.7 Number of Observations = 12 Blind Sample ID = T233 Mean = 183.99 % Relative Standard Deviation = 1.7 Number of Observations = 8 Blind Sample ID = T231 Mean = 225.16 % Relative Standard Deviation = 2.9 Number of Observations = 8 Blind Sample ID = T229 Mean = 202.35 % Relative Standard Deviation = 4.7 Number of Observations = 4 Blind Sample ID = T227 Mean = 10.00 % Relative Standard Deviation = 4.9 Number of Observations = 6 Blind Sample ID = T225
The SGPlot Procedure


- Zinc, unfltd, cICP-MS, recov -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01092, MCode: PLM77
Dates: 10/29/18 through 10/30/24
Open Data Set

Mean = 9.57 % Relative Standard Deviation = 12.1 Number of Observations = 6 Blind Sample ID = T251 Mean = 277.44 % Relative Standard Deviation = 4.9 Number of Observations = 6 Blind Sample ID = T249 Mean = 10.97 % Relative Standard Deviation = 6.9 Number of Observations = 14 Blind Sample ID = T247 Mean = 168.12 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = T245 Mean = 469.57 % Relative Standard Deviation = 3.9 Number of Observations = 22 Blind Sample ID = T243 Mean = 195.19 % Relative Standard Deviation = 2.8 Number of Observations = 24 Blind Sample ID = T241 Mean = 13.42 % Relative Standard Deviation = 5.1 Number of Observations = 24 Blind Sample ID = T239 Mean = 261.36 % Relative Standard Deviation = 3.4 Number of Observations = 24 Blind Sample ID = T237 Mean = 25.48 % Relative Standard Deviation = 5.1 Number of Observations = 23 Blind Sample ID = T235 Mean = 19.43 % Relative Standard Deviation = 4.0 Number of Observations = 23 Blind Sample ID = T233 Mean = 185.89 % Relative Standard Deviation = 3.7 Number of Observations = 23 Blind Sample ID = T231 Mean = 236.09 % Relative Standard Deviation = 3.4 Number of Observations = 22 Blind Sample ID = T229 Mean = 207.08 % Relative Standard Deviation = 2.9 Number of Observations = 18 Blind Sample ID = T227 Mean = 10.43 % Relative Standard Deviation = 6.5 Number of Observations = 19 Blind Sample ID = T225 Mean = 12.94 % Relative Standard Deviation = 3.3 Number of Observations = 9 Blind Sample ID = T223 Mean = 26.20 % Relative Standard Deviation = 3.7 Number of Observations = 9 Blind Sample ID = T221
The SGPlot Procedure