- Aluminum, FIL, DCP -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01106, MCode: DCP02
Dates: 10/10/91 through 06/04/96
Open Data Set

Mean = 116.25 % Relative Standard Deviation = 12.1 Number of Observations = 8 Blind Sample ID = 67DW-33113 Mean = 10.33 % Relative Standard Deviation = 17.7 Number of Observations = 30 Blind Sample ID = 50DW-50123 Mean = 45.31 % Relative Standard Deviation = 21.7 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 38.57 % Relative Standard Deviation = 27.7 Number of Observations = 7 Blind Sample ID = 50DW-50117 Mean = 15.48 % Relative Standard Deviation = 40.3 Number of Observations = 31 Blind Sample ID = 50DW-50115 Mean = 30.00 % Relative Standard Deviation = 28.0 Number of Observations = 18 Blind Sample ID = 50DIW-50133 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 59.33 % Relative Standard Deviation = 17.1 Number of Observations = 30 Blind Sample ID = 33DW-67121 Mean = 36.79 % Relative Standard Deviation = 30.6 Number of Observations = 28 Blind Sample ID = 33DW-67105 Mean = 87.67 % Relative Standard Deviation = 11.1 Number of Observations = 30 Blind Sample ID = 33DW-67103 Mean = 11.11 % Relative Standard Deviation = 30.0 Number of Observations = 9 Blind Sample ID = 33DIW-67135 Mean = 90.00 % Relative Standard Deviation = 10.1 Number of Observations = 23 Blind Sample ID = 33DIW-67131 Mean = 56.25 % Relative Standard Deviation = 15.4 Number of Observations = 40 Blind Sample ID = 33DIW-67127 Mean = 62.42 % Relative Standard Deviation = 12.7 Number of Observations = 33 Blind Sample ID = 25DW-75121 Mean = 43.21 % Relative Standard Deviation = 25.2 Number of Observations = 28 Blind Sample ID = 25DW-75105 Mean = 100.94 % Relative Standard Deviation = 6.8 Number of Observations = 32 Blind Sample ID = 25DW-75103
The SGPlot Procedure


- Aluminum, FIL, DCP, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01106, MCode: DCP01
Dates: 10/08/92 through 02/21/95
Open Data Set

Mean = 21.13 % Relative Standard Deviation = 6.4 Number of Observations = 8 Blind Sample ID = 75DW-25117 Mean = 4.40 % Relative Standard Deviation = 25.9 Number of Observations = 5 Blind Sample ID = 75DIW-25125 Mean = 57.57 % Relative Standard Deviation = 11.3 Number of Observations = 7 Blind Sample ID = 33DW-67121 Mean = 63.57 % Relative Standard Deviation = 4.7 Number of Observations = 14 Blind Sample ID = 25DW-75121
The SGPlot Procedure


- Aluminum, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01106, MCode: PLM43
Dates: 02/07/94 through 09/19/06
Open Data Set

Mean = 30.51 % Relative Standard Deviation = 13.8 Number of Observations = 34 Blind Sample ID = GT3 Mean = 20.03 % Relative Standard Deviation = 16.0 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 7.25 % Relative Standard Deviation = 15.2 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 8.03 % Relative Standard Deviation = 4.1 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 5.80 % Relative Standard Deviation = 15.4 Number of Observations = 20 Blind Sample ID = 75DIW-25125 Mean = 38.24 % Relative Standard Deviation = 8.5 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 40.53 % Relative Standard Deviation = 7.5 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 16.37 % Relative Standard Deviation = 8.8 Number of Observations = 32 Blind Sample ID = 75171-25DIW Mean = 28.61 % Relative Standard Deviation = 6.0 Number of Observations = 26 Blind Sample ID = 75169-25DIW Mean = 34.22 % Relative Standard Deviation = 9.2 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 11.33 % Relative Standard Deviation = 4.5 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 6.18 % Relative Standard Deviation = 3.8 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 63.89 % Relative Standard Deviation = 7.8 Number of Observations = 23 Blind Sample ID = 50177-50179 Mean = 27.67 % Relative Standard Deviation = 12.4 Number of Observations = 53 Blind Sample ID = 50175-50DIW Mean = 60.89 % Relative Standard Deviation = 6.1 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 38.54 % Relative Standard Deviation = 12.6 Number of Observations = 32 Blind Sample ID = 50173-50DIW Mean = 11.01 % Relative Standard Deviation = 8.3 Number of Observations = 56 Blind Sample ID = 50171-50DIW Mean = 47.94 % Relative Standard Deviation = 7.0 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 11.71 % Relative Standard Deviation = 7.6 Number of Observations = 26 Blind Sample ID = 50167-50DIW Mean = 21.37 % Relative Standard Deviation = 8.0 Number of Observations = 40 Blind Sample ID = 50167-50171 Mean = 9.07 % Relative Standard Deviation = 6.3 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 17.44 % Relative Standard Deviation = 10.9 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 29.05 % Relative Standard Deviation = 7.0 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 31.82 % Relative Standard Deviation = 5.0 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 16.69 % Relative Standard Deviation = 7.2 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 42.23 % Relative Standard Deviation = 2.5 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 18.94 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 34.93 % Relative Standard Deviation = 3.7 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 15.09 % Relative Standard Deviation = 30.8 Number of Observations = 32 Blind Sample ID = 50125-50123 Mean = 68.66 % Relative Standard Deviation = 6.4 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 60.10 % Relative Standard Deviation = 7.0 Number of Observations = 28 Blind Sample ID = 25177-75175 Mean = 45.69 % Relative Standard Deviation = 8.7 Number of Observations = 25 Blind Sample ID = 25171-75175 Mean = 26.51 % Relative Standard Deviation = 9.4 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 34.30 % Relative Standard Deviation = 7.5 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 20.30 % Relative Standard Deviation = 7.0 Number of Observations = 25 Blind Sample ID = 25165-75DIW Mean = 32.80 % Relative Standard Deviation = 6.3 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 35.76 % Relative Standard Deviation = 4.7 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 47.19 % Relative Standard Deviation = 12.0 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 58.33 % Relative Standard Deviation = 8.5 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 27.13 % Relative Standard Deviation = 8.9 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 61.17 % Relative Standard Deviation = 5.0 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 232.25 % Relative Standard Deviation = 5.3 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Aluminum, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01106, MCode: PLA13
Dates: 06/07/96 through 08/04/05
Open Data Set

Mean = 17.72 % Relative Standard Deviation = 12.9 Number of Observations = 7 Blind Sample ID = 75DIW-25155 Mean = 6.53 % Relative Standard Deviation = 6.4 Number of Observations = 3 Blind Sample ID = 75DIW-25151 Mean = 7.04 % Relative Standard Deviation = 23.8 Number of Observations = 22 Blind Sample ID = 75DIW-25139 Mean = 10.45 % Relative Standard Deviation = 23.3 Number of Observations = 3 Blind Sample ID = 75DIW-25137 Mean = 28.61 % Relative Standard Deviation = 4.9 Number of Observations = 5 Blind Sample ID = 75169-25DIW Mean = 35.33 % Relative Standard Deviation = 10.2 Number of Observations = 22 Blind Sample ID = 50DIW-50145 Mean = 27.48 % Relative Standard Deviation = 7.3 Number of Observations = 6 Blind Sample ID = 50DIW-50133 Mean = 70.13 % Relative Standard Deviation = 12.9 Number of Observations = 4 Blind Sample ID = 50175-50173 Mean = 11.34 % Relative Standard Deviation = 12.3 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 9.50 % Relative Standard Deviation = 10.5 Number of Observations = 6 Blind Sample ID = 50163-50DIW Mean = 18.30 % Relative Standard Deviation = 19.8 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 30.10 % Relative Standard Deviation = 18.0 Number of Observations = 20 Blind Sample ID = 50157-50DIW Mean = 34.76 % Relative Standard Deviation = 7.3 Number of Observations = 12 Blind Sample ID = 50155-50DIW Mean = 11.74 % Relative Standard Deviation = 24.1 Number of Observations = 18 Blind Sample ID = 50147-50151 Mean = 55.76 % Relative Standard Deviation = 7.3 Number of Observations = 16 Blind Sample ID = 50145-50147 Mean = 52.54 % Relative Standard Deviation = 5.4 Number of Observations = 26 Blind Sample ID = 50139-50141 Mean = 28.53 % Relative Standard Deviation = 7.3 Number of Observations = 4 Blind Sample ID = 50137-50143 Mean = 26.90 % Relative Standard Deviation = 10.9 Number of Observations = 12 Blind Sample ID = 50137-50139 Mean = 18.78 % Relative Standard Deviation = 9.7 Number of Observations = 23 Blind Sample ID = 50135-50139 Mean = 8.66 % Relative Standard Deviation = 28.1 Number of Observations = 12 Blind Sample ID = 33DIW-67135 Mean = 51.37 % Relative Standard Deviation = 7.2 Number of Observations = 3 Blind Sample ID = 33DIW-67127 Mean = 14.45 % Relative Standard Deviation = 16.0 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 26.26 % Relative Standard Deviation = 22.3 Number of Observations = 7 Blind Sample ID = 25DIW-75159 Mean = 9.48 % Relative Standard Deviation = 6.8 Number of Observations = 3 Blind Sample ID = 25DIW-75151 Mean = 14.75 % Relative Standard Deviation = 15.0 Number of Observations = 8 Blind Sample ID = 25DIW-75147 Mean = 57.78 % Relative Standard Deviation = 6.8 Number of Observations = 3 Blind Sample ID = 25171-75175 Mean = 21.99 % Relative Standard Deviation = 7.0 Number of Observations = 6 Blind Sample ID = 25165-75DIW Mean = 39.85 % Relative Standard Deviation = 6.5 Number of Observations = 20 Blind Sample ID = 25157-75159 Mean = 46.73 % Relative Standard Deviation = 9.5 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 62.10 % Relative Standard Deviation = 7.0 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 34.45 % Relative Standard Deviation = 4.0 Number of Observations = 4 Blind Sample ID = 25145-75143 Mean = 26.30 % Relative Standard Deviation = 8.6 Number of Observations = 8 Blind Sample ID = 25139-75137
The SGPlot Procedure


- Aluminum, UNF, DCP -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01105, MCode: DCP05
Dates: 10/10/91 through 02/16/99
Open Data Set

Mean = 15.83 % Relative Standard Deviation = 62.9 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 40.00 % Relative Standard Deviation = 22.4 Number of Observations = 11 Blind Sample ID = 50DW-50117 Mean = 53.33 % Relative Standard Deviation = 21.0 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 41.33 % Relative Standard Deviation = 37.5 Number of Observations = 3 Blind Sample ID = 50DIW-50145 Mean = 42.50 % Relative Standard Deviation = 29.6 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 54.50 % Relative Standard Deviation = 16.3 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 57.75 % Relative Standard Deviation = 26.8 Number of Observations = 8 Blind Sample ID = 50139-50141 Mean = 26.00 % Relative Standard Deviation = 53.8 Number of Observations = 3 Blind Sample ID = 50137-50143 Mean = 52.25 % Relative Standard Deviation = 18.1 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 28.00 % Relative Standard Deviation = 45.8 Number of Observations = 4 Blind Sample ID = 50137-50139 Mean = 16.88 % Relative Standard Deviation = 32.7 Number of Observations = 8 Blind Sample ID = 50135-50139 Mean = 17.13 % Relative Standard Deviation = 27.5 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 40.00 % Relative Standard Deviation = 28.6 Number of Observations = 27 Blind Sample ID = 50125-50133 Mean = 14.31 % Relative Standard Deviation = 40.1 Number of Observations = 51 Blind Sample ID = 50125-50123 Mean = 83.75 % Relative Standard Deviation = 12.7 Number of Observations = 8 Blind Sample ID = 50117-50121 Mean = 65.45 % Relative Standard Deviation = 10.5 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 239.58 % Relative Standard Deviation = 6.0 Number of Observations = 24 Blind Sample ID = 25DW-75113 Mean = 42.31 % Relative Standard Deviation = 29.2 Number of Observations = 13 Blind Sample ID = 25DW-75105 Mean = 62.22 % Relative Standard Deviation = 12.8 Number of Observations = 36 Blind Sample ID = 25DIW-75127 Mean = 59.00 % Relative Standard Deviation = 18.0 Number of Observations = 4 Blind Sample ID = 25147-75145 Mean = 45.00 % Relative Standard Deviation = 38.1 Number of Observations = 4 Blind Sample ID = 25145-75143 Mean = 37.50 % Relative Standard Deviation = 18.5 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 26.88 % Relative Standard Deviation = 33.5 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 13.83 % Relative Standard Deviation = 57.9 Number of Observations = 6 Blind Sample ID = 25137-75135
The SGPlot Procedure


- Aluminum, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01105, MCode: PLM48
Dates: 10/31/02 through 09/21/06
Open Data Set

Mean = 37.20 % Relative Standard Deviation = 3.8 Number of Observations = 9 Blind Sample ID = 75179-25DIW Mean = 38.72 % Relative Standard Deviation = 9.2 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 16.02 % Relative Standard Deviation = 7.1 Number of Observations = 41 Blind Sample ID = 75171-25DIW Mean = 27.03 % Relative Standard Deviation = 7.4 Number of Observations = 9 Blind Sample ID = 75169-25DIW Mean = 62.34 % Relative Standard Deviation = 5.1 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 26.80 % Relative Standard Deviation = 9.4 Number of Observations = 22 Blind Sample ID = 50175-50DIW Mean = 59.59 % Relative Standard Deviation = 2.9 Number of Observations = 12 Blind Sample ID = 50175-50173 Mean = 35.86 % Relative Standard Deviation = 7.4 Number of Observations = 13 Blind Sample ID = 50173-50DIW Mean = 10.93 % Relative Standard Deviation = 10.7 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 45.83 % Relative Standard Deviation = 8.5 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 20.56 % Relative Standard Deviation = 8.0 Number of Observations = 22 Blind Sample ID = 50167-50171 Mean = 52.81 % Relative Standard Deviation = 4.5 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 42.72 % Relative Standard Deviation = 5.7 Number of Observations = 9 Blind Sample ID = 50165-50167 Mean = 67.03 % Relative Standard Deviation = 8.6 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 56.79 % Relative Standard Deviation = 8.1 Number of Observations = 16 Blind Sample ID = 25177-75175 Mean = 41.84 % Relative Standard Deviation = 7.1 Number of Observations = 8 Blind Sample ID = 25171-75175
The SGPlot Procedure


- Aluminum, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01105, MCode: PLA15
Dates: 03/08/99 through 03/15/04
Open Data Set

Mean = 21.80 % Relative Standard Deviation = 12.8 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 30.22 % Relative Standard Deviation = 37.8 Number of Observations = 3 Blind Sample ID = 75169-25DIW Mean = 34.29 % Relative Standard Deviation = 14.7 Number of Observations = 5 Blind Sample ID = 50DIW-50145 Mean = 55.10 % Relative Standard Deviation = 25.1 Number of Observations = 4 Blind Sample ID = 50165-50169 Mean = 52.34 % Relative Standard Deviation = 9.8 Number of Observations = 3 Blind Sample ID = 50165-50167 Mean = 22.70 % Relative Standard Deviation = 26.1 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 33.16 % Relative Standard Deviation = 11.6 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 30.14 % Relative Standard Deviation = 12.6 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 18.11 % Relative Standard Deviation = 12.0 Number of Observations = 3 Blind Sample ID = 25DIW-75163 Mean = 21.13 % Relative Standard Deviation = 24.6 Number of Observations = 4 Blind Sample ID = 25DIW-75159 Mean = 16.66 % Relative Standard Deviation = 4.5 Number of Observations = 3 Blind Sample ID = 25DIW-75147 Mean = 21.97 % Relative Standard Deviation = 20.9 Number of Observations = 4 Blind Sample ID = 25165-75DIW Mean = 36.00 % Relative Standard Deviation = 17.6 Number of Observations = 4 Blind Sample ID = 25163-75159 Mean = 35.30 % Relative Standard Deviation = 15.2 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 34.86 % Relative Standard Deviation = 13.2 Number of Observations = 4 Blind Sample ID = 25159-75161 Mean = 55.30 % Relative Standard Deviation = 7.0 Number of Observations = 4 Blind Sample ID = 25159-75155 Mean = 38.20 % Relative Standard Deviation = 11.2 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 60.79 % Relative Standard Deviation = 8.0 Number of Observations = 4 Blind Sample ID = 25155-75157 Mean = 22.52 % Relative Standard Deviation = 18.7 Number of Observations = 4 Blind Sample ID = 25155-75151 Mean = 36.89 % Relative Standard Deviation = 10.3 Number of Observations = 4 Blind Sample ID = 25151-75153 Mean = 26.45 % Relative Standard Deviation = 11.1 Number of Observations = 4 Blind Sample ID = 25151-75147 Mean = 58.53 % Relative Standard Deviation = 16.5 Number of Observations = 4 Blind Sample ID = 25147-75145
The SGPlot Procedure


- Antimony, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01095, MCode: GF032
Dates: 10/05/98 through 09/05/00
Open Data Set

Mean = 18.25 % Relative Standard Deviation = 5.1 Number of Observations = 4 Blind Sample ID = 50147-50151 Mean = 9.92 % Relative Standard Deviation = 7.4 Number of Observations = 4 Blind Sample ID = 50145-50147 Mean = 24.38 % Relative Standard Deviation = 4.3 Number of Observations = 4 Blind Sample ID = 25155-75151 Mean = 25.97 % Relative Standard Deviation = 2.4 Number of Observations = 4 Blind Sample ID = 25151-75153 Mean = 13.63 % Relative Standard Deviation = 7.8 Number of Observations = 4 Blind Sample ID = 25151-75147 Mean = 18.61 % Relative Standard Deviation = 3.5 Number of Observations = 4 Blind Sample ID = 25151-75143
The SGPlot Procedure


- Antimony, FIL, Hydride, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01095, MCode: HY009
Dates: 10/04/91 through 09/29/98
Open Data Set

Mean = 3.44 % Relative Standard Deviation = 14.9 Number of Observations = 16 Blind Sample ID = 50DW-50125 Mean = 3.75 % Relative Standard Deviation = 15.4 Number of Observations = 16 Blind Sample ID = 50DW-50117 Mean = 7.66 % Relative Standard Deviation = 17.4 Number of Observations = 7 Blind Sample ID = 50139-50141 Mean = 14.80 % Relative Standard Deviation = 36.0 Number of Observations = 4 Blind Sample ID = 50137-50143 Mean = 13.22 % Relative Standard Deviation = 9.1 Number of Observations = 4 Blind Sample ID = 50137-50139 Mean = 41.96 % Relative Standard Deviation = 15.7 Number of Observations = 8 Blind Sample ID = 50135-50139 Mean = 12.64 % Relative Standard Deviation = 11.9 Number of Observations = 14 Blind Sample ID = 50125-50133 Mean = 8.38 % Relative Standard Deviation = 12.0 Number of Observations = 40 Blind Sample ID = 50125-50123 Mean = 9.77 % Relative Standard Deviation = 11.2 Number of Observations = 13 Blind Sample ID = 50117-50121 Mean = 16.53 % Relative Standard Deviation = 10.2 Number of Observations = 15 Blind Sample ID = 50107-50113 Mean = 12.13 % Relative Standard Deviation = 10.8 Number of Observations = 16 Blind Sample ID = 50101-50107 Mean = 16.03 % Relative Standard Deviation = 18.0 Number of Observations = 32 Blind Sample ID = 25DW-75113 Mean = 3.50 % Relative Standard Deviation = 19.7 Number of Observations = 20 Blind Sample ID = 25DIW-75127 Mean = 14.84 % Relative Standard Deviation = 21.5 Number of Observations = 4 Blind Sample ID = 25145-75143 Mean = 55.06 % Relative Standard Deviation = 17.5 Number of Observations = 7 Blind Sample ID = 25137-75135 Mean = 6.50 % Relative Standard Deviation = 28.1 Number of Observations = 16 Blind Sample ID = 25107-75105
The SGPlot Procedure


- Antimony, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01095, MCode: PLM43
Dates: 02/07/94 through 09/19/06
Open Data Set

Mean = 4.28 % Relative Standard Deviation = 6.5 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 2.68 % Relative Standard Deviation = 13.8 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 4.27 % Relative Standard Deviation = 3.1 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 1.88 % Relative Standard Deviation = 18.2 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 2.78 % Relative Standard Deviation = 5.3 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 1.47 % Relative Standard Deviation = 5.1 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 2.46 % Relative Standard Deviation = 2.3 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 4.48 % Relative Standard Deviation = 4.8 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 8.68 % Relative Standard Deviation = 1.7 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 41.24 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 2.63 % Relative Standard Deviation = 9.5 Number of Observations = 23 Blind Sample ID = 50177-50179 Mean = 0.98 % Relative Standard Deviation = 8.8 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 3.69 % Relative Standard Deviation = 4.8 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 2.66 % Relative Standard Deviation = 5.4 Number of Observations = 28 Blind Sample ID = 50173-50DIW Mean = 1.39 % Relative Standard Deviation = 8.2 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 4.00 % Relative Standard Deviation = 4.5 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 11.55 % Relative Standard Deviation = 8.1 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 12.22 % Relative Standard Deviation = 2.8 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 17.45 % Relative Standard Deviation = 4.9 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 7.12 % Relative Standard Deviation = 4.4 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 5.43 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 7.71 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 22.48 % Relative Standard Deviation = 4.8 Number of Observations = 27 Blind Sample ID = 50143-50151 Mean = 13.64 % Relative Standard Deviation = 1.9 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 50.06 % Relative Standard Deviation = 4.7 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 10.73 % Relative Standard Deviation = 5.5 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 6.88 % Relative Standard Deviation = 18.4 Number of Observations = 32 Blind Sample ID = 50125-50123 Mean = 2.20 % Relative Standard Deviation = 6.1 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 1.85 % Relative Standard Deviation = 10.5 Number of Observations = 28 Blind Sample ID = 25177-75175 Mean = 2.15 % Relative Standard Deviation = 4.7 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 17.26 % Relative Standard Deviation = 4.6 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 7.90 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 7.69 % Relative Standard Deviation = 10.6 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 14.65 % Relative Standard Deviation = 6.7 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 12.66 % Relative Standard Deviation = 5.7 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 25.21 % Relative Standard Deviation = 5.4 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 20.15 % Relative Standard Deviation = 7.6 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 10.17 % Relative Standard Deviation = 4.7 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 5.57 % Relative Standard Deviation = 11.1 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 14.94 % Relative Standard Deviation = 4.6 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Antimony, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01097, MCode: GF031
Dates: 10/13/98 through 09/14/99
Open Data Set

Mean = 4.07 % Relative Standard Deviation = 12.7 Number of Observations = 4 Blind Sample ID = 50DIW-50145 Mean = 8.93 % Relative Standard Deviation = 3.7 Number of Observations = 8 Blind Sample ID = 25147-75145
The SGPlot Procedure


- Arsenate [as (V)], IC-ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 62453, MCode: PLM36
Dates: 10/21/03 through 09/06/06
Open Data Set

Mean = 12.25 % Relative Standard Deviation = 6.6 Number of Observations = 47 Blind Sample ID = AS3 Mean = 24.73 % Relative Standard Deviation = 4.3 Number of Observations = 24 Blind Sample ID = AS2
The SGPlot Procedure


- Arsenate [as (V)], IC-ICP-MS (w/org) -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 62453, MCode: PLM35
Dates: 10/31/03 through 09/12/06
Open Data Set

Mean = 12.40 % Relative Standard Deviation = 4.1 Number of Observations = 47 Blind Sample ID = AS4 Mean = 25.23 % Relative Standard Deviation = 3.4 Number of Observations = 23 Blind Sample ID = AS1
The SGPlot Procedure


- Arsenic, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01000, MCode: GF085
Dates: 10/05/98 through 08/24/05
Open Data Set

Mean = 8.22 % Relative Standard Deviation = 7.5 Number of Observations = 24 Blind Sample ID = 75DIW-25155 Mean = 6.51 % Relative Standard Deviation = 7.6 Number of Observations = 12 Blind Sample ID = 75169-25DIW Mean = 5.03 % Relative Standard Deviation = 9.3 Number of Observations = 36 Blind Sample ID = 50DIW-50145 Mean = 3.70 % Relative Standard Deviation = 12.3 Number of Observations = 8 Blind Sample ID = 50175-50DIW Mean = 4.85 % Relative Standard Deviation = 5.6 Number of Observations = 12 Blind Sample ID = 50175-50173 Mean = 1.16 % Relative Standard Deviation = 12.2 Number of Observations = 7 Blind Sample ID = 50173-50DIW Mean = 1.52 % Relative Standard Deviation = 22.4 Number of Observations = 28 Blind Sample ID = 50171-50DIW Mean = 2.98 % Relative Standard Deviation = 16.1 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 11.11 % Relative Standard Deviation = 7.3 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 13.29 % Relative Standard Deviation = 7.7 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 17.52 % Relative Standard Deviation = 2.2 Number of Observations = 4 Blind Sample ID = 50165-50169 Mean = 25.65 % Relative Standard Deviation = 3.7 Number of Observations = 4 Blind Sample ID = 50165-50167 Mean = 13.20 % Relative Standard Deviation = 6.4 Number of Observations = 32 Blind Sample ID = 50157-50DIW Mean = 16.07 % Relative Standard Deviation = 6.0 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 1.50 % Relative Standard Deviation = 25.7 Number of Observations = 4 Blind Sample ID = 50147-50151 Mean = 6.46 % Relative Standard Deviation = 5.8 Number of Observations = 4 Blind Sample ID = 50145-50147 Mean = 8.05 % Relative Standard Deviation = 8.1 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 19.26 % Relative Standard Deviation = 10.1 Number of Observations = 11 Blind Sample ID = 25DIW-75163 Mean = 21.80 % Relative Standard Deviation = 6.5 Number of Observations = 20 Blind Sample ID = 25DIW-75159 Mean = 1.74 % Relative Standard Deviation = 16.6 Number of Observations = 14 Blind Sample ID = 25DIW-75147 Mean = 11.93 % Relative Standard Deviation = 4.2 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 6.74 % Relative Standard Deviation = 9.4 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 19.62 % Relative Standard Deviation = 7.2 Number of Observations = 16 Blind Sample ID = 25169-75167 Mean = 6.89 % Relative Standard Deviation = 6.7 Number of Observations = 8 Blind Sample ID = 25165-75DIW Mean = 28.02 % Relative Standard Deviation = 2.9 Number of Observations = 12 Blind Sample ID = 25163-75159 Mean = 27.68 % Relative Standard Deviation = 3.8 Number of Observations = 12 Blind Sample ID = 25159-75161 Mean = 33.08 % Relative Standard Deviation = 3.9 Number of Observations = 11 Blind Sample ID = 25159-75155 Mean = 28.16 % Relative Standard Deviation = 6.2 Number of Observations = 30 Blind Sample ID = 25157-75159 Mean = 27.48 % Relative Standard Deviation = 6.6 Number of Observations = 12 Blind Sample ID = 25155-75157 Mean = 8.51 % Relative Standard Deviation = 7.0 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 9.16 % Relative Standard Deviation = 4.4 Number of Observations = 4 Blind Sample ID = 25155-75151 Mean = 10.08 % Relative Standard Deviation = 5.5 Number of Observations = 8 Blind Sample ID = 25155-75147 Mean = 25.23 % Relative Standard Deviation = 6.3 Number of Observations = 28 Blind Sample ID = 25151-75155 Mean = 2.03 % Relative Standard Deviation = 19.0 Number of Observations = 4 Blind Sample ID = 25151-75147 Mean = 10.88 % Relative Standard Deviation = 7.7 Number of Observations = 4 Blind Sample ID = 25151-75143 Mean = 7.90 % Relative Standard Deviation = 8.3 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 4.12 % Relative Standard Deviation = 13.3 Number of Observations = 34 Blind Sample ID = 25145-75147 Mean = 1.61 % Relative Standard Deviation = 32.2 Number of Observations = 11 Blind Sample ID = 25004-75154
The SGPlot Procedure


- Arsenic, FIL, Hydride, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01000, MCode: HY010
Dates: 10/04/91 through 09/29/98
Open Data Set

Mean = 1.82 % Relative Standard Deviation = 12.6 Number of Observations = 22 Blind Sample ID = 75DIW-25139 Mean = 8.39 % Relative Standard Deviation = 9.4 Number of Observations = 38 Blind Sample ID = 67DW-33113 Mean = 5.50 % Relative Standard Deviation = 11.5 Number of Observations = 16 Blind Sample ID = 50DW-50125 Mean = 10.97 % Relative Standard Deviation = 12.1 Number of Observations = 32 Blind Sample ID = 50DW-50123 Mean = 4.25 % Relative Standard Deviation = 18.9 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 3.94 % Relative Standard Deviation = 6.3 Number of Observations = 16 Blind Sample ID = 50DW-50117 Mean = 8.48 % Relative Standard Deviation = 12.5 Number of Observations = 31 Blind Sample ID = 50DW-50115 Mean = 7.77 % Relative Standard Deviation = 9.1 Number of Observations = 20 Blind Sample ID = 50DIW-50143 Mean = 3.03 % Relative Standard Deviation = 8.1 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 1.03 % Relative Standard Deviation = 6.3 Number of Observations = 11 Blind Sample ID = 50DIW-50136 Mean = 7.69 % Relative Standard Deviation = 7.5 Number of Observations = 7 Blind Sample ID = 50DIW-50135 Mean = 13.95 % Relative Standard Deviation = 9.2 Number of Observations = 22 Blind Sample ID = 50DIW-50133 Mean = 10.83 % Relative Standard Deviation = 10.3 Number of Observations = 23 Blind Sample ID = 50DIW-50123 Mean = 12.43 % Relative Standard Deviation = 5.2 Number of Observations = 14 Blind Sample ID = 50143-50145 Mean = 6.94 % Relative Standard Deviation = 11.2 Number of Observations = 52 Blind Sample ID = 50139-50141 Mean = 8.75 % Relative Standard Deviation = 5.7 Number of Observations = 4 Blind Sample ID = 50137-50143 Mean = 3.48 % Relative Standard Deviation = 13.8 Number of Observations = 12 Blind Sample ID = 50137-50139 Mean = 1.04 % Relative Standard Deviation = 6.3 Number of Observations = 11 Blind Sample ID = 50136-50138 Mean = 9.58 % Relative Standard Deviation = 16.3 Number of Observations = 42 Blind Sample ID = 50135-50139 Mean = 1.43 % Relative Standard Deviation = 33.7 Number of Observations = 19 Blind Sample ID = 50134-50136 Mean = 18.07 % Relative Standard Deviation = 7.0 Number of Observations = 14 Blind Sample ID = 50125-50133 Mean = 15.65 % Relative Standard Deviation = 6.7 Number of Observations = 40 Blind Sample ID = 50125-50123 Mean = 15.00 % Relative Standard Deviation = 12.3 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 5.63 % Relative Standard Deviation = 12.8 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 7.85 % Relative Standard Deviation = 7.1 Number of Observations = 13 Blind Sample ID = 50117-50121 Mean = 9.25 % Relative Standard Deviation = 16.0 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 17.87 % Relative Standard Deviation = 11.9 Number of Observations = 15 Blind Sample ID = 50107-50113 Mean = 10.31 % Relative Standard Deviation = 12.6 Number of Observations = 16 Blind Sample ID = 50101-50107 Mean = 14.63 % Relative Standard Deviation = 7.3 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 5.98 % Relative Standard Deviation = 10.9 Number of Observations = 46 Blind Sample ID = 33DW-67121 Mean = 10.13 % Relative Standard Deviation = 18.3 Number of Observations = 16 Blind Sample ID = 33DW-67115 Mean = 2.13 % Relative Standard Deviation = 16.2 Number of Observations = 30 Blind Sample ID = 33DW-67105 Mean = 2.55 % Relative Standard Deviation = 28.4 Number of Observations = 31 Blind Sample ID = 33DW-67103 Mean = 7.77 % Relative Standard Deviation = 24.0 Number of Observations = 26 Blind Sample ID = 33DIW-67135 Mean = 1.33 % Relative Standard Deviation = 43.3 Number of Observations = 3 Blind Sample ID = 33DIW-67134 Mean = 41.31 % Relative Standard Deviation = 9.6 Number of Observations = 35 Blind Sample ID = 33DIW-67131 Mean = 3.00 % Relative Standard Deviation = 15.9 Number of Observations = 45 Blind Sample ID = 33DIW-67127 Mean = 6.50 % Relative Standard Deviation = 10.3 Number of Observations = 32 Blind Sample ID = 25DW-75121 Mean = 18.84 % Relative Standard Deviation = 11.6 Number of Observations = 31 Blind Sample ID = 25DW-75113 Mean = 2.26 % Relative Standard Deviation = 22.8 Number of Observations = 31 Blind Sample ID = 25DW-75105 Mean = 2.97 % Relative Standard Deviation = 23.4 Number of Observations = 32 Blind Sample ID = 25DW-75103 Mean = 11.52 % Relative Standard Deviation = 6.7 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 8.97 % Relative Standard Deviation = 19.1 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 46.10 % Relative Standard Deviation = 13.2 Number of Observations = 10 Blind Sample ID = 25DIW-75131 Mean = 3.40 % Relative Standard Deviation = 14.8 Number of Observations = 20 Blind Sample ID = 25DIW-75127 Mean = 13.25 % Relative Standard Deviation = 9.5 Number of Observations = 4 Blind Sample ID = 25145-75143 Mean = 2.20 % Relative Standard Deviation = 17.5 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 9.77 % Relative Standard Deviation = 16.2 Number of Observations = 19 Blind Sample ID = 25137-75135 Mean = 9.43 % Relative Standard Deviation = 5.7 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 8.83 % Relative Standard Deviation = 8.1 Number of Observations = 12 Blind Sample ID = 25123-75127 Mean = 5.00 % Relative Standard Deviation = 31.8 Number of Observations = 16 Blind Sample ID = 25107-75105
The SGPlot Procedure


- Arsenic, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01000, MCode: PLM40
Dates: 10/10/01 through 10/06/05
Open Data Set

Mean = 6.63 % Relative Standard Deviation = 11.2 Number of Observations = 32 Blind Sample ID = 75169-25DIW Mean = 3.67 % Relative Standard Deviation = 2.6 Number of Observations = 21 Blind Sample ID = 50175-50DIW Mean = 4.99 % Relative Standard Deviation = 4.3 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 1.34 % Relative Standard Deviation = 7.8 Number of Observations = 24 Blind Sample ID = 50173-50DIW Mean = 1.71 % Relative Standard Deviation = 3.4 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 3.07 % Relative Standard Deviation = 4.8 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 11.01 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 12.69 % Relative Standard Deviation = 2.0 Number of Observations = 21 Blind Sample ID = 50167-50171 Mean = 17.41 % Relative Standard Deviation = 3.0 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 24.10 % Relative Standard Deviation = 3.4 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 12.27 % Relative Standard Deviation = 3.3 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 12.63 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 0.16 % Relative Standard Deviation = 20.4 Number of Observations = 5 Blind Sample ID = 50160-50162 Mean = 6.40 % Relative Standard Deviation = 4.6 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 18.69 % Relative Standard Deviation = 3.8 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 11.99 % Relative Standard Deviation = 2.8 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 6.48 % Relative Standard Deviation = 2.9 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 27.17 % Relative Standard Deviation = 4.2 Number of Observations = 24 Blind Sample ID = 25161-75159
The SGPlot Procedure


- Arsenic, FIL, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01000, MCode: PLM10
Dates: 09/09/05 through 09/19/06
Open Data Set

Mean = 1.31 % Relative Standard Deviation = 5.3 Number of Observations = 19 Blind Sample ID = 75179-25DIW Mean = 5.51 % Relative Standard Deviation = 4.4 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 2.51 % Relative Standard Deviation = 3.1 Number of Observations = 15 Blind Sample ID = 50177-50179 Mean = 3.69 % Relative Standard Deviation = 3.3 Number of Observations = 23 Blind Sample ID = 50175-50DIW Mean = 1.30 % Relative Standard Deviation = 4.7 Number of Observations = 6 Blind Sample ID = 50173-50DIW Mean = 2.85 % Relative Standard Deviation = 4.3 Number of Observations = 20 Blind Sample ID = 25179-75177 Mean = 6.29 % Relative Standard Deviation = 2.9 Number of Observations = 21 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Arsenic, UNF, EPA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01002, MCode: GF031
Dates: 10/30/97 through 09/18/00
Open Data Set

Mean = 7.02 % Relative Standard Deviation = 4.3 Number of Observations = 4 Blind Sample ID = 50DIW-50143 Mean = 1.11 % Relative Standard Deviation = 10.6 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 11.19 % Relative Standard Deviation = 4.8 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 24.52 % Relative Standard Deviation = 3.2 Number of Observations = 4 Blind Sample ID = 25151-75155 Mean = 3.92 % Relative Standard Deviation = 7.7 Number of Observations = 4 Blind Sample ID = 25145-75147
The SGPlot Procedure


- Arsenic, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01002, MCode: GF096
Dates: 10/09/98 through 08/31/05
Open Data Set

Mean = 8.34 % Relative Standard Deviation = 2.8 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 6.16 % Relative Standard Deviation = 6.6 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 4.32 % Relative Standard Deviation = 33.7 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 3.41 % Relative Standard Deviation = 10.7 Number of Observations = 12 Blind Sample ID = 50175-50DIW Mean = 4.91 % Relative Standard Deviation = 12.4 Number of Observations = 24 Blind Sample ID = 50175-50173 Mean = 1.41 % Relative Standard Deviation = 28.1 Number of Observations = 17 Blind Sample ID = 50173-50DIW Mean = 1.58 % Relative Standard Deviation = 23.5 Number of Observations = 38 Blind Sample ID = 50171-50DIW Mean = 2.82 % Relative Standard Deviation = 12.4 Number of Observations = 24 Blind Sample ID = 50171-50173 Mean = 10.70 % Relative Standard Deviation = 1.9 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 12.84 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 16.64 % Relative Standard Deviation = 4.7 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 24.72 % Relative Standard Deviation = 8.6 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 12.93 % Relative Standard Deviation = 4.2 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 12.90 % Relative Standard Deviation = 3.0 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 12.24 % Relative Standard Deviation = 5.2 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 15.41 % Relative Standard Deviation = 3.1 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 19.14 % Relative Standard Deviation = 7.7 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 21.30 % Relative Standard Deviation = 5.2 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 1.68 % Relative Standard Deviation = 14.5 Number of Observations = 10 Blind Sample ID = 25DIW-75147 Mean = 11.42 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 6.51 % Relative Standard Deviation = 6.1 Number of Observations = 24 Blind Sample ID = 25171-75175 Mean = 19.31 % Relative Standard Deviation = 7.2 Number of Observations = 18 Blind Sample ID = 25169-75167 Mean = 6.27 % Relative Standard Deviation = 6.9 Number of Observations = 5 Blind Sample ID = 25165-75DIW Mean = 26.90 % Relative Standard Deviation = 6.1 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 27.67 % Relative Standard Deviation = 5.4 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 26.62 % Relative Standard Deviation = 3.9 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 31.19 % Relative Standard Deviation = 7.0 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 27.85 % Relative Standard Deviation = 2.3 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 27.21 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 10.00 % Relative Standard Deviation = 0.4 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 24.40 % Relative Standard Deviation = 9.7 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 7.96 % Relative Standard Deviation = 8.0 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 4.18 % Relative Standard Deviation = 8.9 Number of Observations = 8 Blind Sample ID = 25145-75147
The SGPlot Procedure


- Arsenic, UNF, GFAA-EPA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01002, MCode: GF073
Dates: 10/04/91 through 09/19/97
Open Data Set

Mean = 2.63 % Relative Standard Deviation = 19.7 Number of Observations = 8 Blind Sample ID = 75DW-25125 Mean = 2.00 % Relative Standard Deviation = 28.9 Number of Observations = 7 Blind Sample ID = 75DW-25117 Mean = 2.27 % Relative Standard Deviation = 28.5 Number of Observations = 11 Blind Sample ID = 75DIW-25125 Mean = 4.88 % Relative Standard Deviation = 7.3 Number of Observations = 8 Blind Sample ID = 50DW-50125 Mean = 3.63 % Relative Standard Deviation = 20.5 Number of Observations = 8 Blind Sample ID = 50DW-50117 Mean = 2.70 % Relative Standard Deviation = 14.4 Number of Observations = 6 Blind Sample ID = 50DIW-50139 Mean = 4.99 % Relative Standard Deviation = 3.6 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 18.50 % Relative Standard Deviation = 3.1 Number of Observations = 4 Blind Sample ID = 50125-50133 Mean = 16.25 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 50125-50123 Mean = 19.38 % Relative Standard Deviation = 9.9 Number of Observations = 8 Blind Sample ID = 50107-50113 Mean = 9.13 % Relative Standard Deviation = 14.9 Number of Observations = 8 Blind Sample ID = 50101-50107 Mean = 6.38 % Relative Standard Deviation = 11.7 Number of Observations = 8 Blind Sample ID = 25DW-75121 Mean = 1.88 % Relative Standard Deviation = 18.9 Number of Observations = 8 Blind Sample ID = 25DW-75105 Mean = 7.78 % Relative Standard Deviation = 5.1 Number of Observations = 12 Blind Sample ID = 25DIW-75135 Mean = 43.38 % Relative Standard Deviation = 7.5 Number of Observations = 8 Blind Sample ID = 25DIW-75131 Mean = 5.63 % Relative Standard Deviation = 16.3 Number of Observations = 8 Blind Sample ID = 25107-75105
The SGPlot Procedure


- Arsenic, UNF, Hydride, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01002, MCode: HY013
Dates: 10/10/91 through 09/24/98
Open Data Set

Mean = 8.36 % Relative Standard Deviation = 7.5 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 5.33 % Relative Standard Deviation = 9.2 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 3.92 % Relative Standard Deviation = 7.4 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 4.11 % Relative Standard Deviation = 14.6 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 8.01 % Relative Standard Deviation = 9.4 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 3.29 % Relative Standard Deviation = 13.5 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 7.74 % Relative Standard Deviation = 12.5 Number of Observations = 6 Blind Sample ID = 50DIW-50135 Mean = 13.25 % Relative Standard Deviation = 6.7 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 7.90 % Relative Standard Deviation = 8.2 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 4.65 % Relative Standard Deviation = 18.3 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 8.03 % Relative Standard Deviation = 14.8 Number of Observations = 5 Blind Sample ID = 50135-50137 Mean = 18.27 % Relative Standard Deviation = 8.5 Number of Observations = 11 Blind Sample ID = 50125-50133 Mean = 15.82 % Relative Standard Deviation = 11.3 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 15.75 % Relative Standard Deviation = 11.1 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 5.63 % Relative Standard Deviation = 8.9 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 8.40 % Relative Standard Deviation = 8.3 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 9.94 % Relative Standard Deviation = 20.3 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 11.00 % Relative Standard Deviation = 11.3 Number of Observations = 10 Blind Sample ID = 50101-50115 Mean = 14.38 % Relative Standard Deviation = 9.1 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 6.00 % Relative Standard Deviation = 9.2 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 10.06 % Relative Standard Deviation = 18.4 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 8.67 % Relative Standard Deviation = 21.5 Number of Observations = 6 Blind Sample ID = 33DIW-67135 Mean = 40.83 % Relative Standard Deviation = 12.5 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 18.08 % Relative Standard Deviation = 6.3 Number of Observations = 24 Blind Sample ID = 25DW-75113 Mean = 2.92 % Relative Standard Deviation = 42.5 Number of Observations = 12 Blind Sample ID = 25DW-75105 Mean = 12.13 % Relative Standard Deviation = 6.9 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 8.88 % Relative Standard Deviation = 23.6 Number of Observations = 14 Blind Sample ID = 25DIW-75135 Mean = 44.55 % Relative Standard Deviation = 12.1 Number of Observations = 11 Blind Sample ID = 25DIW-75131 Mean = 3.31 % Relative Standard Deviation = 14.5 Number of Observations = 16 Blind Sample ID = 25DIW-75127 Mean = 6.75 % Relative Standard Deviation = 15.0 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 2.15 % Relative Standard Deviation = 16.3 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 10.14 % Relative Standard Deviation = 6.8 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 8.73 % Relative Standard Deviation = 10.4 Number of Observations = 11 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Arsenic, UNF, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01002, MCode: PLM11
Dates: 09/20/05 through 09/08/06
Open Data Set

Mean = 1.27 % Relative Standard Deviation = 12.8 Number of Observations = 20 Blind Sample ID = 75179-25DIW Mean = 5.54 % Relative Standard Deviation = 5.4 Number of Observations = 16 Blind Sample ID = 75175-25DIW Mean = 2.51 % Relative Standard Deviation = 6.1 Number of Observations = 17 Blind Sample ID = 50177-50179 Mean = 3.65 % Relative Standard Deviation = 3.6 Number of Observations = 25 Blind Sample ID = 50175-50DIW Mean = 1.43 % Relative Standard Deviation = 15.8 Number of Observations = 3 Blind Sample ID = 50173-50DIW Mean = 2.88 % Relative Standard Deviation = 5.6 Number of Observations = 20 Blind Sample ID = 25179-75177 Mean = 6.37 % Relative Standard Deviation = 4.9 Number of Observations = 20 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Arsenite [AS (III)], IC-ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 62452, MCode: PLM36
Dates: 10/21/03 through 09/06/06
Open Data Set

Mean = 12.42 % Relative Standard Deviation = 5.2 Number of Observations = 46 Blind Sample ID = AS3 Mean = 24.82 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = AS2
The SGPlot Procedure


- Arsenite [AS (III)], IC-ICP-MS (w/org) -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 62452, MCode: PLM35
Dates: 10/31/03 through 09/12/06
Open Data Set

Mean = 12.48 % Relative Standard Deviation = 3.9 Number of Observations = 47 Blind Sample ID = AS4 Mean = 25.10 % Relative Standard Deviation = 3.5 Number of Observations = 23 Blind Sample ID = AS1
The SGPlot Procedure


- Barium, FIL, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01005, MCode: AA003
Dates: 10/03/91 through 03/27/96
Open Data Set

Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 3 Blind Sample ID = 50115-50103 Mean = 233.33 % Relative Standard Deviation = 24.7 Number of Observations = 3 Blind Sample ID = 33DW-67115 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 4 Blind Sample ID = 33DIW-67135 Mean = 333.33 % Relative Standard Deviation = 19.5 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 4 Blind Sample ID = 25DIW-75135 Mean = 391.67 % Relative Standard Deviation = 23.0 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 3 Blind Sample ID = 25133-75127 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Barium, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01005, MCode: PLM43
Dates: 02/07/94 through 09/19/06
Open Data Set

Mean = 25.98 % Relative Standard Deviation = 2.8 Number of Observations = 34 Blind Sample ID = GT3 Mean = 5.59 % Relative Standard Deviation = 3.8 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 11.10 % Relative Standard Deviation = 2.2 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 16.25 % Relative Standard Deviation = 2.1 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 4.19 % Relative Standard Deviation = 9.6 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 26.66 % Relative Standard Deviation = 5.1 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 13.52 % Relative Standard Deviation = 5.0 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 33.27 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 19.01 % Relative Standard Deviation = 1.9 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 41.66 % Relative Standard Deviation = 2.0 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 33.37 % Relative Standard Deviation = 2.4 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 38.59 % Relative Standard Deviation = 5.7 Number of Observations = 23 Blind Sample ID = 50177-50179 Mean = 8.88 % Relative Standard Deviation = 5.5 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 29.36 % Relative Standard Deviation = 5.0 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 20.09 % Relative Standard Deviation = 5.5 Number of Observations = 28 Blind Sample ID = 50173-50DIW Mean = 6.93 % Relative Standard Deviation = 3.8 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 27.99 % Relative Standard Deviation = 4.2 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 10.32 % Relative Standard Deviation = 5.7 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 17.42 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 3.78 % Relative Standard Deviation = 4.7 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 34.65 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 59.99 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 10.29 % Relative Standard Deviation = 3.9 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 63.17 % Relative Standard Deviation = 2.4 Number of Observations = 27 Blind Sample ID = 50143-50151 Mean = 60.66 % Relative Standard Deviation = 1.8 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 65.23 % Relative Standard Deviation = 2.1 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 84.33 % Relative Standard Deviation = 3.4 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 12.55 % Relative Standard Deviation = 6.5 Number of Observations = 31 Blind Sample ID = 50125-50123 Mean = 39.04 % Relative Standard Deviation = 5.2 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 24.04 % Relative Standard Deviation = 5.6 Number of Observations = 28 Blind Sample ID = 25177-75175 Mean = 17.06 % Relative Standard Deviation = 4.2 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 26.51 % Relative Standard Deviation = 3.6 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 37.78 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 11.53 % Relative Standard Deviation = 5.7 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 45.50 % Relative Standard Deviation = 3.3 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 57.74 % Relative Standard Deviation = 3.6 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 146.97 % Relative Standard Deviation = 4.2 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 27.04 % Relative Standard Deviation = 2.5 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 65.79 % Relative Standard Deviation = 2.0 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 19.87 % Relative Standard Deviation = 4.5 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 58.94 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Barium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01005, MCode: PLA11
Dates: 10/02/91 through 09/29/06
Open Data Set

Mean = 10.08 % Relative Standard Deviation = 2.1 Number of Observations = 8 Blind Sample ID = 75DIW-25151 Mean = 26.92 % Relative Standard Deviation = 1.8 Number of Observations = 8 Blind Sample ID = 75179-25DIW Mean = 13.78 % Relative Standard Deviation = 2.5 Number of Observations = 8 Blind Sample ID = 75175-25DIW Mean = 10.49 % Relative Standard Deviation = 3.3 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 33.66 % Relative Standard Deviation = 5.0 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 23.23 % Relative Standard Deviation = 2.3 Number of Observations = 40 Blind Sample ID = 67DW-33113 Mean = 40.70 % Relative Standard Deviation = 3.4 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 21.93 % Relative Standard Deviation = 2.4 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 31.86 % Relative Standard Deviation = 2.6 Number of Observations = 8 Blind Sample ID = 50DIW-50137 Mean = 32.66 % Relative Standard Deviation = 2.1 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 38.06 % Relative Standard Deviation = 1.5 Number of Observations = 8 Blind Sample ID = 50177-50179 Mean = 9.11 % Relative Standard Deviation = 2.8 Number of Observations = 23 Blind Sample ID = 50175-50DIW Mean = 30.28 % Relative Standard Deviation = 1.8 Number of Observations = 12 Blind Sample ID = 50175-50173 Mean = 21.15 % Relative Standard Deviation = 2.6 Number of Observations = 11 Blind Sample ID = 50173-50DIW Mean = 6.93 % Relative Standard Deviation = 2.2 Number of Observations = 16 Blind Sample ID = 50171-50DIW Mean = 28.40 % Relative Standard Deviation = 1.2 Number of Observations = 8 Blind Sample ID = 50171-50173 Mean = 10.18 % Relative Standard Deviation = 3.3 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 17.44 % Relative Standard Deviation = 3.5 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 45.99 % Relative Standard Deviation = 4.8 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 34.37 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 3.77 % Relative Standard Deviation = 10.7 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 35.26 % Relative Standard Deviation = 3.1 Number of Observations = 3 Blind Sample ID = 50161-50DIW Mean = 59.21 % Relative Standard Deviation = 3.8 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 10.43 % Relative Standard Deviation = 5.6 Number of Observations = 10 Blind Sample ID = 50155-50DIW Mean = 60.97 % Relative Standard Deviation = 2.0 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 59.81 % Relative Standard Deviation = 2.4 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 40.52 % Relative Standard Deviation = 3.2 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 50.28 % Relative Standard Deviation = 2.4 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 65.34 % Relative Standard Deviation = 2.6 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 264.38 % Relative Standard Deviation = 2.7 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 41.88 % Relative Standard Deviation = 2.2 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 26.70 % Relative Standard Deviation = 2.6 Number of Observations = 30 Blind Sample ID = 50123-50121 Mean = 31.29 % Relative Standard Deviation = 2.0 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 26.37 % Relative Standard Deviation = 6.4 Number of Observations = 60 Blind Sample ID = 50121-50105 Mean = 143.50 % Relative Standard Deviation = 3.6 Number of Observations = 60 Blind Sample ID = 50115-50103 Mean = 50.50 % Relative Standard Deviation = 2.5 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 49.80 % Relative Standard Deviation = 2.6 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 5.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 30.31 % Relative Standard Deviation = 2.5 Number of Observations = 13 Blind Sample ID = 33DW-67121 Mean = 166.15 % Relative Standard Deviation = 3.0 Number of Observations = 13 Blind Sample ID = 33DW-67115 Mean = 44.00 % Relative Standard Deviation = 1.9 Number of Observations = 4 Blind Sample ID = 33DIW-67135 Mean = 103.21 % Relative Standard Deviation = 4.6 Number of Observations = 28 Blind Sample ID = 33127-67133 Mean = 12.03 % Relative Standard Deviation = 10.2 Number of Observations = 31 Blind Sample ID = 33127-67123 Mean = 33.87 % Relative Standard Deviation = 2.2 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 5.58 % Relative Standard Deviation = 3.9 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 29.10 % Relative Standard Deviation = 6.4 Number of Observations = 6 Blind Sample ID = 25DIW-75159 Mean = 138.16 % Relative Standard Deviation = 2.6 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 30.38 % Relative Standard Deviation = 2.8 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 55.20 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 25DIW-75147 Mean = 61.90 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 49.51 % Relative Standard Deviation = 3.7 Number of Observations = 29 Blind Sample ID = 25DIW-75135 Mean = 375.56 % Relative Standard Deviation = 2.9 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 15.22 % Relative Standard Deviation = 3.3 Number of Observations = 55 Blind Sample ID = 25DIW-75127 Mean = 38.86 % Relative Standard Deviation = 3.2 Number of Observations = 8 Blind Sample ID = 25179-75177 Mean = 23.57 % Relative Standard Deviation = 1.4 Number of Observations = 8 Blind Sample ID = 25177-75175 Mean = 17.17 % Relative Standard Deviation = 1.4 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 27.11 % Relative Standard Deviation = 2.2 Number of Observations = 4 Blind Sample ID = 25169-75167 Mean = 11.39 % Relative Standard Deviation = 3.4 Number of Observations = 4 Blind Sample ID = 25165-75DIW Mean = 30.20 % Relative Standard Deviation = 1.2 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 46.98 % Relative Standard Deviation = 3.2 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 61.75 % Relative Standard Deviation = 2.5 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 25.35 % Relative Standard Deviation = 2.7 Number of Observations = 5 Blind Sample ID = 25159-75155 Mean = 57.52 % Relative Standard Deviation = 2.6 Number of Observations = 11 Blind Sample ID = 25157-75159 Mean = 97.77 % Relative Standard Deviation = 2.7 Number of Observations = 6 Blind Sample ID = 25155-75157 Mean = 141.44 % Relative Standard Deviation = 3.1 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 60.79 % Relative Standard Deviation = 1.7 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 25.98 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 45.84 % Relative Standard Deviation = 2.3 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 64.17 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 42.03 % Relative Standard Deviation = 1.8 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 59.45 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 52.20 % Relative Standard Deviation = 2.2 Number of Observations = 20 Blind Sample ID = 25133-75127 Mean = 17.79 % Relative Standard Deviation = 2.9 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 19.40 % Relative Standard Deviation = 3.3 Number of Observations = 104 Blind Sample ID = 25125-75127 Mean = 56.22 % Relative Standard Deviation = 2.5 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 17.17 % Relative Standard Deviation = 3.7 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 75.41 % Relative Standard Deviation = 2.6 Number of Observations = 41 Blind Sample ID = 25117-75113 Mean = 66.62 % Relative Standard Deviation = 2.8 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 308.60 % Relative Standard Deviation = 48.2 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Barium, UNF, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01007, MCode: AA042
Dates: 10/03/91 through 10/08/97
Open Data Set

Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 24 Blind Sample ID = 67DW-33113 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 131.25 % Relative Standard Deviation = 36.5 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 170.59 % Relative Standard Deviation = 27.5 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 308.33 % Relative Standard Deviation = 25.7 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 350.00 % Relative Standard Deviation = 33.4 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 100.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Barium, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01007, MCode: PLM47
Dates: 11/20/03 through 09/19/06
Open Data Set

Mean = 25.76 % Relative Standard Deviation = 2.0 Number of Observations = 9 Blind Sample ID = 75179-25DIW Mean = 13.19 % Relative Standard Deviation = 5.9 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 9.99 % Relative Standard Deviation = 3.3 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 38.07 % Relative Standard Deviation = 1.5 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 8.70 % Relative Standard Deviation = 3.2 Number of Observations = 22 Blind Sample ID = 50175-50DIW Mean = 28.63 % Relative Standard Deviation = 5.2 Number of Observations = 12 Blind Sample ID = 50175-50173 Mean = 20.31 % Relative Standard Deviation = 4.8 Number of Observations = 13 Blind Sample ID = 50173-50DIW Mean = 6.56 % Relative Standard Deviation = 4.6 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 26.18 % Relative Standard Deviation = 6.9 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 16.44 % Relative Standard Deviation = 4.9 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 38.96 % Relative Standard Deviation = 1.8 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 22.56 % Relative Standard Deviation = 6.3 Number of Observations = 16 Blind Sample ID = 25177-75175 Mean = 15.89 % Relative Standard Deviation = 3.7 Number of Observations = 8 Blind Sample ID = 25171-75175
The SGPlot Procedure


- Barium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01007, MCode: PLA15
Dates: 03/26/99 through 09/07/06
Open Data Set

Mean = 9.79 % Relative Standard Deviation = 2.3 Number of Observations = 5 Blind Sample ID = 75DIW-25151 Mean = 13.18 % Relative Standard Deviation = 2.9 Number of Observations = 4 Blind Sample ID = 75175-25DIW Mean = 9.96 % Relative Standard Deviation = 4.3 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 30.82 % Relative Standard Deviation = 5.6 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 8.93 % Relative Standard Deviation = 6.9 Number of Observations = 9 Blind Sample ID = 50175-50DIW Mean = 30.61 % Relative Standard Deviation = 2.9 Number of Observations = 4 Blind Sample ID = 50175-50173 Mean = 20.24 % Relative Standard Deviation = 2.1 Number of Observations = 4 Blind Sample ID = 50173-50DIW Mean = 7.02 % Relative Standard Deviation = 5.0 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 17.13 % Relative Standard Deviation = 4.3 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 42.98 % Relative Standard Deviation = 2.3 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 33.19 % Relative Standard Deviation = 5.1 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 5.34 % Relative Standard Deviation = 7.7 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 27.57 % Relative Standard Deviation = 1.1 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 131.78 % Relative Standard Deviation = 2.0 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 52.12 % Relative Standard Deviation = 2.6 Number of Observations = 8 Blind Sample ID = 25DIW-75147 Mean = 59.02 % Relative Standard Deviation = 1.9 Number of Observations = 4 Blind Sample ID = 25DIW-75143 Mean = 37.86 % Relative Standard Deviation = 1.8 Number of Observations = 4 Blind Sample ID = 25179-75177 Mean = 23.74 % Relative Standard Deviation = 5.1 Number of Observations = 4 Blind Sample ID = 25177-75175 Mean = 16.21 % Relative Standard Deviation = 5.5 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 28.53 % Relative Standard Deviation = 2.3 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 59.26 % Relative Standard Deviation = 2.1 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 24.14 % Relative Standard Deviation = 2.6 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 90.33 % Relative Standard Deviation = 1.3 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 25.10 % Relative Standard Deviation = 1.8 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 61.51 % Relative Standard Deviation = 1.7 Number of Observations = 4 Blind Sample ID = 25145-75147
The SGPlot Procedure


- Beryllium, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01010, MCode: PLM43
Dates: 02/07/94 through 09/19/06
Open Data Set

Mean = 15.32 % Relative Standard Deviation = 5.7 Number of Observations = 34 Blind Sample ID = GT3 Mean = 2.78 % Relative Standard Deviation = 10.3 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 1.32 % Relative Standard Deviation = 4.8 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 4.06 % Relative Standard Deviation = 6.2 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 2.78 % Relative Standard Deviation = 7.9 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 2.13 % Relative Standard Deviation = 9.6 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 7.33 % Relative Standard Deviation = 6.5 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 4.54 % Relative Standard Deviation = 4.4 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 4.28 % Relative Standard Deviation = 3.4 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 30.17 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 2.33 % Relative Standard Deviation = 12.3 Number of Observations = 23 Blind Sample ID = 50177-50179 Mean = 1.44 % Relative Standard Deviation = 7.4 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 2.57 % Relative Standard Deviation = 8.2 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 1.08 % Relative Standard Deviation = 10.2 Number of Observations = 28 Blind Sample ID = 50173-50DIW Mean = 0.58 % Relative Standard Deviation = 9.7 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 1.58 % Relative Standard Deviation = 9.8 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 5.57 % Relative Standard Deviation = 7.8 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 6.09 % Relative Standard Deviation = 6.8 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 11.41 % Relative Standard Deviation = 6.1 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 6.74 % Relative Standard Deviation = 3.7 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 6.74 % Relative Standard Deviation = 4.5 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 17.07 % Relative Standard Deviation = 6.0 Number of Observations = 27 Blind Sample ID = 50143-50151 Mean = 8.80 % Relative Standard Deviation = 3.4 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 33.05 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 25.73 % Relative Standard Deviation = 4.8 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 11.45 % Relative Standard Deviation = 6.3 Number of Observations = 31 Blind Sample ID = 50125-50123 Mean = 1.66 % Relative Standard Deviation = 12.0 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 2.41 % Relative Standard Deviation = 10.0 Number of Observations = 28 Blind Sample ID = 25177-75175 Mean = 2.47 % Relative Standard Deviation = 7.4 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 10.72 % Relative Standard Deviation = 6.0 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 10.07 % Relative Standard Deviation = 7.0 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 4.16 % Relative Standard Deviation = 7.1 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 11.46 % Relative Standard Deviation = 7.4 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 11.59 % Relative Standard Deviation = 3.8 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 6.55 % Relative Standard Deviation = 2.6 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 14.08 % Relative Standard Deviation = 4.1 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 14.15 % Relative Standard Deviation = 5.8 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 11.94 % Relative Standard Deviation = 5.7 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Beryllium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01010, MCode: PLA11
Dates: 10/02/91 through 09/29/05
Open Data Set

Mean = 6.50 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = 75DIW-25151 Mean = 0.88 % Relative Standard Deviation = 11.4 Number of Observations = 32 Blind Sample ID = 75171-25DIW Mean = 7.38 % Relative Standard Deviation = 4.3 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 3.32 % Relative Standard Deviation = 19.3 Number of Observations = 41 Blind Sample ID = 67DW-33113 Mean = 5.07 % Relative Standard Deviation = 7.5 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 29.50 % Relative Standard Deviation = 3.2 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 1.55 % Relative Standard Deviation = 3.9 Number of Observations = 7 Blind Sample ID = 50175-50DIW Mean = 2.58 % Relative Standard Deviation = 3.7 Number of Observations = 4 Blind Sample ID = 50175-50173 Mean = 1.07 % Relative Standard Deviation = 4.6 Number of Observations = 4 Blind Sample ID = 50173-50DIW Mean = 0.67 % Relative Standard Deviation = 47.9 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 6.36 % Relative Standard Deviation = 1.7 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 12.60 % Relative Standard Deviation = 5.1 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 13.43 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 10.76 % Relative Standard Deviation = 2.9 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 6.60 % Relative Standard Deviation = 4.2 Number of Observations = 3 Blind Sample ID = 50161-50DIW Mean = 6.59 % Relative Standard Deviation = 6.9 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 17.53 % Relative Standard Deviation = 5.6 Number of Observations = 16 Blind Sample ID = 50143-50151 Mean = 8.96 % Relative Standard Deviation = 4.7 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 9.56 % Relative Standard Deviation = 3.6 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 7.08 % Relative Standard Deviation = 6.9 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 32.67 % Relative Standard Deviation = 3.1 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 13.69 % Relative Standard Deviation = 4.3 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 37.64 % Relative Standard Deviation = 4.0 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 9.47 % Relative Standard Deviation = 6.5 Number of Observations = 30 Blind Sample ID = 50123-50121 Mean = 13.13 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 14.62 % Relative Standard Deviation = 5.1 Number of Observations = 60 Blind Sample ID = 50121-50105 Mean = 28.87 % Relative Standard Deviation = 3.0 Number of Observations = 60 Blind Sample ID = 50115-50103 Mean = 11.31 % Relative Standard Deviation = 4.1 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 9.77 % Relative Standard Deviation = 3.9 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 5.44 % Relative Standard Deviation = 4.6 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 7.22 % Relative Standard Deviation = 4.1 Number of Observations = 13 Blind Sample ID = 33DW-67121 Mean = 35.23 % Relative Standard Deviation = 2.4 Number of Observations = 13 Blind Sample ID = 33DW-67115 Mean = 39.00 % Relative Standard Deviation = 2.1 Number of Observations = 4 Blind Sample ID = 33DIW-67135 Mean = 7.82 % Relative Standard Deviation = 5.1 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 19.54 % Relative Standard Deviation = 3.9 Number of Observations = 21 Blind Sample ID = 25DIW-75151 Mean = 6.59 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 44.57 % Relative Standard Deviation = 3.1 Number of Observations = 29 Blind Sample ID = 25DIW-75135 Mean = 9.14 % Relative Standard Deviation = 4.4 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 2.57 % Relative Standard Deviation = 3.3 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 11.53 % Relative Standard Deviation = 3.4 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 11.44 % Relative Standard Deviation = 2.7 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 11.76 % Relative Standard Deviation = 6.3 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 10.94 % Relative Standard Deviation = 3.9 Number of Observations = 10 Blind Sample ID = 25147-75145 Mean = 14.78 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 9.90 % Relative Standard Deviation = 4.5 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 6.40 % Relative Standard Deviation = 7.1 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 19.60 % Relative Standard Deviation = 3.5 Number of Observations = 20 Blind Sample ID = 25133-75127 Mean = 14.86 % Relative Standard Deviation = 3.5 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 14.32 % Relative Standard Deviation = 4.3 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 11.61 % Relative Standard Deviation = 6.2 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 12.46 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 9.17 % Relative Standard Deviation = 4.1 Number of Observations = 41 Blind Sample ID = 25117-75113 Mean = 11.85 % Relative Standard Deviation = 4.6 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 10.20 % Relative Standard Deviation = 15.4 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Beryllium, UNF, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01012, MCode: AA043
Dates: 10/10/91 through 02/16/99
Open Data Set

Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 22.50 % Relative Standard Deviation = 46.1 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 19.23 % Relative Standard Deviation = 39.5 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 32.73 % Relative Standard Deviation = 19.8 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 24 Blind Sample ID = 25DW-75113 Mean = 11.43 % Relative Standard Deviation = 31.8 Number of Observations = 14 Blind Sample ID = 25DW-75105 Mean = 10.63 % Relative Standard Deviation = 23.5 Number of Observations = 16 Blind Sample ID = 25DIW-75127 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 4 Blind Sample ID = 25147-75145 Mean = 10.13 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 25141-75139
The SGPlot Procedure


- Beryllium, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01012, MCode: PLM47
Dates: 11/01/04 through 09/19/06
Open Data Set

Mean = 2.68 % Relative Standard Deviation = 6.8 Number of Observations = 9 Blind Sample ID = 75179-25DIW Mean = 2.09 % Relative Standard Deviation = 9.1 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 2.18 % Relative Standard Deviation = 7.1 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 1.41 % Relative Standard Deviation = 12.2 Number of Observations = 22 Blind Sample ID = 50175-50DIW Mean = 2.53 % Relative Standard Deviation = 3.7 Number of Observations = 12 Blind Sample ID = 50175-50173 Mean = 0.96 % Relative Standard Deviation = 5.1 Number of Observations = 13 Blind Sample ID = 50173-50DIW Mean = 0.56 % Relative Standard Deviation = 9.4 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 1.57 % Relative Standard Deviation = 4.8 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 1.55 % Relative Standard Deviation = 9.8 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 2.45 % Relative Standard Deviation = 9.5 Number of Observations = 16 Blind Sample ID = 25177-75175 Mean = 2.34 % Relative Standard Deviation = 7.4 Number of Observations = 8 Blind Sample ID = 25171-75175
The SGPlot Procedure


- Beryllium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01012, MCode: PLA15
Dates: 03/29/99 through 09/19/03
Open Data Set

Mean = 6.34 % Relative Standard Deviation = 13.7 Number of Observations = 5 Blind Sample ID = 75DIW-25151 Mean = 6.98 % Relative Standard Deviation = 11.3 Number of Observations = 4 Blind Sample ID = 75169-25DIW Mean = 4.83 % Relative Standard Deviation = 8.9 Number of Observations = 4 Blind Sample ID = 50DIW-50145 Mean = 5.20 % Relative Standard Deviation = 14.9 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 10.40 % Relative Standard Deviation = 5.1 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 6.36 % Relative Standard Deviation = 5.3 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 6.36 % Relative Standard Deviation = 4.9 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 11.70 % Relative Standard Deviation = 2.1 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 4.06 % Relative Standard Deviation = 12.5 Number of Observations = 8 Blind Sample ID = 25165-75DIW Mean = 10.61 % Relative Standard Deviation = 4.7 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 10.73 % Relative Standard Deviation = 1.9 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 11.81 % Relative Standard Deviation = 4.8 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 11.07 % Relative Standard Deviation = 9.1 Number of Observations = 4 Blind Sample ID = 25147-75145
The SGPlot Procedure


- Boron, FIL, DCP -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01020, MCode: DCP03
Dates: 10/08/91 through 06/05/96
Open Data Set

Mean = 150.83 % Relative Standard Deviation = 5.5 Number of Observations = 24 Blind Sample ID = 50DW-50124 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 32 Blind Sample ID = 50DW-50123 Mean = 11.67 % Relative Standard Deviation = 33.4 Number of Observations = 12 Blind Sample ID = 50DW-50122 Mean = 45.33 % Relative Standard Deviation = 13.9 Number of Observations = 30 Blind Sample ID = 50DW-50121 Mean = 90.83 % Relative Standard Deviation = 8.7 Number of Observations = 12 Blind Sample ID = 50DW-50118 Mean = 50.36 % Relative Standard Deviation = 11.4 Number of Observations = 28 Blind Sample ID = 50DW-50115 Mean = 10.19 % Relative Standard Deviation = 13.6 Number of Observations = 52 Blind Sample ID = 50DW-50112 Mean = 57.50 % Relative Standard Deviation = 7.9 Number of Observations = 12 Blind Sample ID = 50DW-50104 Mean = 149.41 % Relative Standard Deviation = 8.7 Number of Observations = 17 Blind Sample ID = 50DIW-50133 Mean = 146.00 % Relative Standard Deviation = 6.1 Number of Observations = 30 Blind Sample ID = 50DIW-50128 Mean = 10.42 % Relative Standard Deviation = 19.6 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 163.75 % Relative Standard Deviation = 6.5 Number of Observations = 8 Blind Sample ID = 50128-50134 Mean = 163.00 % Relative Standard Deviation = 6.5 Number of Observations = 10 Blind Sample ID = 50128-50132 Mean = 153.33 % Relative Standard Deviation = 4.2 Number of Observations = 12 Blind Sample ID = 50126-50128 Mean = 156.67 % Relative Standard Deviation = 4.2 Number of Observations = 12 Blind Sample ID = 50126-50124 Mean = 12.50 % Relative Standard Deviation = 36.2 Number of Observations = 12 Blind Sample ID = 50126-50122 Mean = 165.83 % Relative Standard Deviation = 3.9 Number of Observations = 24 Blind Sample ID = 50120-50128 Mean = 174.17 % Relative Standard Deviation = 4.6 Number of Observations = 12 Blind Sample ID = 50120-50124 Mean = 34.17 % Relative Standard Deviation = 23.2 Number of Observations = 12 Blind Sample ID = 50120-50112 Mean = 28.00 % Relative Standard Deviation = 15.1 Number of Observations = 10 Blind Sample ID = 50114-50112 Mean = 115.00 % Relative Standard Deviation = 7.9 Number of Observations = 12 Blind Sample ID = 50110-50118 Mean = 32.50 % Relative Standard Deviation = 29.7 Number of Observations = 12 Blind Sample ID = 50110-50112 Mean = 22.14 % Relative Standard Deviation = 26.1 Number of Observations = 14 Blind Sample ID = 50106-50112 Mean = 68.33 % Relative Standard Deviation = 6.0 Number of Observations = 6 Blind Sample ID = 50106-50104 Mean = 11.30 % Relative Standard Deviation = 30.5 Number of Observations = 23 Blind Sample ID = 33DW-67126 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 28 Blind Sample ID = 33DW-67122 Mean = 62.90 % Relative Standard Deviation = 9.4 Number of Observations = 31 Blind Sample ID = 33DW-67121 Mean = 29.22 % Relative Standard Deviation = 16.5 Number of Observations = 51 Blind Sample ID = 33DW-67120 Mean = 120.00 % Relative Standard Deviation = 6.2 Number of Observations = 26 Blind Sample ID = 33DW-67118 Mean = 24.17 % Relative Standard Deviation = 20.8 Number of Observations = 24 Blind Sample ID = 33DW-67114 Mean = 33.70 % Relative Standard Deviation = 22.0 Number of Observations = 27 Blind Sample ID = 33DW-67110 Mean = 17.78 % Relative Standard Deviation = 23.8 Number of Observations = 27 Blind Sample ID = 33DW-67106 Mean = 107.50 % Relative Standard Deviation = 6.0 Number of Observations = 28 Blind Sample ID = 33DW-67105 Mean = 75.71 % Relative Standard Deviation = 8.4 Number of Observations = 28 Blind Sample ID = 33DW-67104 Mean = 76.90 % Relative Standard Deviation = 7.0 Number of Observations = 29 Blind Sample ID = 33DW-67103 Mean = 15.56 % Relative Standard Deviation = 46.7 Number of Observations = 9 Blind Sample ID = 33DIW-67135 Mean = 22.35 % Relative Standard Deviation = 37.2 Number of Observations = 17 Blind Sample ID = 33DIW-67134 Mean = 24.00 % Relative Standard Deviation = 40.3 Number of Observations = 10 Blind Sample ID = 33DIW-67132 Mean = 93.04 % Relative Standard Deviation = 10.0 Number of Observations = 23 Blind Sample ID = 33DIW-67131 Mean = 10.59 % Relative Standard Deviation = 22.9 Number of Observations = 17 Blind Sample ID = 33DIW-67130 Mean = 30.71 % Relative Standard Deviation = 18.2 Number of Observations = 42 Blind Sample ID = 33DIW-67127 Mean = 10.43 % Relative Standard Deviation = 20.0 Number of Observations = 23 Blind Sample ID = 33DIW-67126 Mean = 11.30 % Relative Standard Deviation = 30.5 Number of Observations = 23 Blind Sample ID = 33DIW-67122 Mean = 29.57 % Relative Standard Deviation = 19.0 Number of Observations = 23 Blind Sample ID = 33DIW-67120 Mean = 69.00 % Relative Standard Deviation = 7.9 Number of Observations = 30 Blind Sample ID = 25DW-75121 Mean = 119.67 % Relative Standard Deviation = 5.1 Number of Observations = 30 Blind Sample ID = 25DW-75105 Mean = 83.67 % Relative Standard Deviation = 5.9 Number of Observations = 30 Blind Sample ID = 25DW-75103 Mean = 22.22 % Relative Standard Deviation = 19.8 Number of Observations = 9 Blind Sample ID = 25DIW-75132 Mean = 33.33 % Relative Standard Deviation = 19.5 Number of Observations = 12 Blind Sample ID = 25DIW-75120 Mean = 220.00 % Relative Standard Deviation = 0.0 Number of Observations = 4 Blind Sample ID = 25130-75128 Mean = 224.00 % Relative Standard Deviation = 4.0 Number of Observations = 5 Blind Sample ID = 25122-75128
The SGPlot Procedure


- Boron, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01020, MCode: PLM40
Dates: 10/23/01 through 09/19/06
Open Data Set

Mean = 20.75 % Relative Standard Deviation = 10.1 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 35.44 % Relative Standard Deviation = 13.7 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 21.11 % Relative Standard Deviation = 9.2 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 57.45 % Relative Standard Deviation = 8.9 Number of Observations = 22 Blind Sample ID = 50177-50179 Mean = 24.48 % Relative Standard Deviation = 13.8 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 101.47 % Relative Standard Deviation = 7.7 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 82.63 % Relative Standard Deviation = 10.5 Number of Observations = 27 Blind Sample ID = 50173-50DIW Mean = 13.61 % Relative Standard Deviation = 20.1 Number of Observations = 47 Blind Sample ID = 50171-50DIW Mean = 90.76 % Relative Standard Deviation = 10.8 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 13.59 % Relative Standard Deviation = 22.6 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 26.94 % Relative Standard Deviation = 9.9 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 6.41 % Relative Standard Deviation = 30.7 Number of Observations = 10 Blind Sample ID = 50163-50DIW Mean = 20.05 % Relative Standard Deviation = 17.0 Number of Observations = 15 Blind Sample ID = 50161-50DIW Mean = 71.59 % Relative Standard Deviation = 9.8 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 56.00 % Relative Standard Deviation = 6.4 Number of Observations = 28 Blind Sample ID = 25177-75175 Mean = 41.21 % Relative Standard Deviation = 9.4 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 25.56 % Relative Standard Deviation = 10.8 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 26.70 % Relative Standard Deviation = 10.6 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 21.82 % Relative Standard Deviation = 16.5 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 27.33 % Relative Standard Deviation = 9.9 Number of Observations = 12 Blind Sample ID = 25161-75159
The SGPlot Procedure


- Boron, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01020, MCode: PLA13
Dates: 06/07/96 through 09/29/06
Open Data Set

Mean = 23.92 % Relative Standard Deviation = 10.5 Number of Observations = 8 Blind Sample ID = 75DIW-25155 Mean = 10.39 % Relative Standard Deviation = 15.1 Number of Observations = 6 Blind Sample ID = 75DIW-25151 Mean = 12.81 % Relative Standard Deviation = 19.4 Number of Observations = 27 Blind Sample ID = 75DIW-25144 Mean = 8.94 % Relative Standard Deviation = 32.3 Number of Observations = 21 Blind Sample ID = 75DIW-25139 Mean = 22.22 % Relative Standard Deviation = 6.2 Number of Observations = 20 Blind Sample ID = 75179-25DIW Mean = 37.28 % Relative Standard Deviation = 4.7 Number of Observations = 19 Blind Sample ID = 75175-25DIW Mean = 18.55 % Relative Standard Deviation = 7.2 Number of Observations = 32 Blind Sample ID = 75171-25DIW Mean = 19.87 % Relative Standard Deviation = 11.5 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 24.10 % Relative Standard Deviation = 7.9 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 5.20 % Relative Standard Deviation = 29.1 Number of Observations = 5 Blind Sample ID = 50DIW-50138 Mean = 102.24 % Relative Standard Deviation = 3.4 Number of Observations = 52 Blind Sample ID = 50DIW-50136 Mean = 151.17 % Relative Standard Deviation = 2.2 Number of Observations = 6 Blind Sample ID = 50DIW-50133 Mean = 4.46 % Relative Standard Deviation = 31.3 Number of Observations = 30 Blind Sample ID = 50DIW-50130 Mean = 144.67 % Relative Standard Deviation = 1.6 Number of Observations = 6 Blind Sample ID = 50DIW-50128 Mean = 59.48 % Relative Standard Deviation = 4.3 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 23.88 % Relative Standard Deviation = 3.0 Number of Observations = 43 Blind Sample ID = 50175-50DIW Mean = 102.87 % Relative Standard Deviation = 4.3 Number of Observations = 19 Blind Sample ID = 50175-50173 Mean = 78.87 % Relative Standard Deviation = 4.4 Number of Observations = 19 Blind Sample ID = 50173-50DIW Mean = 12.75 % Relative Standard Deviation = 17.1 Number of Observations = 44 Blind Sample ID = 50171-50DIW Mean = 90.62 % Relative Standard Deviation = 4.5 Number of Observations = 16 Blind Sample ID = 50171-50173 Mean = 13.19 % Relative Standard Deviation = 16.2 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 25.44 % Relative Standard Deviation = 9.5 Number of Observations = 36 Blind Sample ID = 50167-50171 Mean = 10.93 % Relative Standard Deviation = 22.1 Number of Observations = 7 Blind Sample ID = 50163-50DIW Mean = 19.67 % Relative Standard Deviation = 14.9 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 13.33 % Relative Standard Deviation = 20.3 Number of Observations = 20 Blind Sample ID = 50158-50DIW Mean = 33.15 % Relative Standard Deviation = 25.7 Number of Observations = 8 Blind Sample ID = 50157-50DIW Mean = 40.98 % Relative Standard Deviation = 3.4 Number of Observations = 8 Blind Sample ID = 50156-50DIW Mean = 145.92 % Relative Standard Deviation = 4.5 Number of Observations = 9 Blind Sample ID = 50154-50DIW Mean = 48.71 % Relative Standard Deviation = 8.9 Number of Observations = 6 Blind Sample ID = 50152-50DIW Mean = 84.65 % Relative Standard Deviation = 3.9 Number of Observations = 34 Blind Sample ID = 50142-50144 Mean = 44.51 % Relative Standard Deviation = 6.6 Number of Observations = 18 Blind Sample ID = 50140-50144 Mean = 31.08 % Relative Standard Deviation = 7.8 Number of Observations = 26 Blind Sample ID = 50139-50141 Mean = 26.42 % Relative Standard Deviation = 14.8 Number of Observations = 8 Blind Sample ID = 50137-50139 Mean = 104.19 % Relative Standard Deviation = 3.0 Number of Observations = 30 Blind Sample ID = 50136-50138 Mean = 23.57 % Relative Standard Deviation = 8.6 Number of Observations = 23 Blind Sample ID = 50135-50139 Mean = 38.06 % Relative Standard Deviation = 10.9 Number of Observations = 18 Blind Sample ID = 50134-50140 Mean = 118.67 % Relative Standard Deviation = 3.2 Number of Observations = 68 Blind Sample ID = 50134-50136 Mean = 29.64 % Relative Standard Deviation = 12.5 Number of Observations = 13 Blind Sample ID = 50132-50134 Mean = 105.58 % Relative Standard Deviation = 3.7 Number of Observations = 30 Blind Sample ID = 50130-50136 Mean = 158.00 % Relative Standard Deviation = 2.9 Number of Observations = 3 Blind Sample ID = 50128-50134 Mean = 159.88 % Relative Standard Deviation = 1.5 Number of Observations = 8 Blind Sample ID = 50128-50132 Mean = 48.79 % Relative Standard Deviation = 6.8 Number of Observations = 4 Blind Sample ID = 50004-50DIW Mean = 9.01 % Relative Standard Deviation = 35.1 Number of Observations = 12 Blind Sample ID = 33DIW-67135 Mean = 22.38 % Relative Standard Deviation = 10.4 Number of Observations = 6 Blind Sample ID = 33DIW-67134 Mean = 19.78 % Relative Standard Deviation = 11.5 Number of Observations = 12 Blind Sample ID = 33DIW-67132 Mean = 7.07 % Relative Standard Deviation = 22.4 Number of Observations = 6 Blind Sample ID = 33DIW-67130 Mean = 28.53 % Relative Standard Deviation = 6.6 Number of Observations = 3 Blind Sample ID = 33DIW-67127 Mean = 11.42 % Relative Standard Deviation = 16.5 Number of Observations = 7 Blind Sample ID = 25DIW-75163 Mean = 20.24 % Relative Standard Deviation = 4.1 Number of Observations = 7 Blind Sample ID = 25DIW-75159 Mean = 63.19 % Relative Standard Deviation = 9.2 Number of Observations = 36 Blind Sample ID = 25DIW-75156 Mean = 39.13 % Relative Standard Deviation = 5.8 Number of Observations = 8 Blind Sample ID = 25DIW-75147 Mean = 35.17 % Relative Standard Deviation = 6.9 Number of Observations = 60 Blind Sample ID = 25DIW-75144 Mean = 23.30 % Relative Standard Deviation = 8.2 Number of Observations = 3 Blind Sample ID = 25DIW-75132 Mean = 72.78 % Relative Standard Deviation = 3.4 Number of Observations = 20 Blind Sample ID = 25179-75177 Mean = 58.42 % Relative Standard Deviation = 3.4 Number of Observations = 19 Blind Sample ID = 25177-75175 Mean = 43.01 % Relative Standard Deviation = 4.7 Number of Observations = 28 Blind Sample ID = 25171-75175 Mean = 23.91 % Relative Standard Deviation = 5.7 Number of Observations = 20 Blind Sample ID = 25169-75167 Mean = 19.91 % Relative Standard Deviation = 6.6 Number of Observations = 8 Blind Sample ID = 25165-75DIW Mean = 33.48 % Relative Standard Deviation = 8.2 Number of Observations = 20 Blind Sample ID = 25162-75158 Mean = 22.91 % Relative Standard Deviation = 10.1 Number of Observations = 20 Blind Sample ID = 25160-75DIW Mean = 35.78 % Relative Standard Deviation = 8.8 Number of Observations = 8 Blind Sample ID = 25157-75159 Mean = 93.77 % Relative Standard Deviation = 3.7 Number of Observations = 36 Blind Sample ID = 25156-75004 Mean = 61.50 % Relative Standard Deviation = 5.6 Number of Observations = 8 Blind Sample ID = 25155-75147 Mean = 140.49 % Relative Standard Deviation = 3.7 Number of Observations = 7 Blind Sample ID = 25154-75004 Mean = 26.70 % Relative Standard Deviation = 4.4 Number of Observations = 5 Blind Sample ID = 25152-75150 Mean = 72.94 % Relative Standard Deviation = 4.7 Number of Observations = 41 Blind Sample ID = 25150-75004 Mean = 50.76 % Relative Standard Deviation = 11.5 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 36.87 % Relative Standard Deviation = 8.1 Number of Observations = 18 Blind Sample ID = 25146-75144 Mean = 92.69 % Relative Standard Deviation = 3.5 Number of Observations = 33 Blind Sample ID = 25146-75142 Mean = 9.69 % Relative Standard Deviation = 23.5 Number of Observations = 9 Blind Sample ID = 25146-75138 Mean = 22.08 % Relative Standard Deviation = 10.7 Number of Observations = 26 Blind Sample ID = 25144-75146 Mean = 102.57 % Relative Standard Deviation = 4.1 Number of Observations = 28 Blind Sample ID = 25144-75142 Mean = 15.63 % Relative Standard Deviation = 15.8 Number of Observations = 32 Blind Sample ID = 25140-75138 Mean = 21.24 % Relative Standard Deviation = 13.4 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 32.48 % Relative Standard Deviation = 6.0 Number of Observations = 26 Blind Sample ID = 25138-75140 Mean = 161.87 % Relative Standard Deviation = 1.7 Number of Observations = 22 Blind Sample ID = 25134-75136 Mean = 9.47 % Relative Standard Deviation = 26.5 Number of Observations = 3 Blind Sample ID = 25132-75130 Mean = 239.75 % Relative Standard Deviation = 2.8 Number of Observations = 36 Blind Sample ID = 25004-75154 Mean = 92.70 % Relative Standard Deviation = 3.6 Number of Observations = 39 Blind Sample ID = 25004-75152
The SGPlot Procedure


- Boron, UNF, DCP -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01022, MCode: DCP06
Dates: 10/28/97 through 02/08/99
Open Data Set

Mean = 21.50 % Relative Standard Deviation = 31.9 Number of Observations = 4 Blind Sample ID = 50137-50143 Mean = 26.25 % Relative Standard Deviation = 33.4 Number of Observations = 4 Blind Sample ID = 50137-50139 Mean = 32.50 % Relative Standard Deviation = 47.0 Number of Observations = 4 Blind Sample ID = 25145-75143
The SGPlot Procedure


- Boron, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01022, MCode: PLM47
Dates: 10/26/05 through 09/19/06
Open Data Set

Mean = 21.19 % Relative Standard Deviation = 7.3 Number of Observations = 9 Blind Sample ID = 75179-25DIW Mean = 34.86 % Relative Standard Deviation = 9.9 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 59.04 % Relative Standard Deviation = 4.9 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 24.55 % Relative Standard Deviation = 15.2 Number of Observations = 15 Blind Sample ID = 50175-50DIW Mean = 71.04 % Relative Standard Deviation = 9.0 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 58.23 % Relative Standard Deviation = 6.3 Number of Observations = 16 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Boron, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01022, MCode: PLA15
Dates: 03/08/99 through 10/04/03
Open Data Set

Mean = 28.09 % Relative Standard Deviation = 12.1 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 21.72 % Relative Standard Deviation = 30.9 Number of Observations = 4 Blind Sample ID = 75169-25DIW Mean = 52.85 % Relative Standard Deviation = 7.9 Number of Observations = 4 Blind Sample ID = 50165-50169 Mean = 50.71 % Relative Standard Deviation = 14.5 Number of Observations = 4 Blind Sample ID = 50165-50167 Mean = 33.21 % Relative Standard Deviation = 12.8 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 44.29 % Relative Standard Deviation = 5.4 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 45.58 % Relative Standard Deviation = 22.7 Number of Observations = 3 Blind Sample ID = 50147-50151 Mean = 37.50 % Relative Standard Deviation = 7.0 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 25.22 % Relative Standard Deviation = 25.0 Number of Observations = 3 Blind Sample ID = 25169-75167 Mean = 18.56 % Relative Standard Deviation = 28.1 Number of Observations = 5 Blind Sample ID = 25165-75DIW Mean = 21.59 % Relative Standard Deviation = 12.8 Number of Observations = 4 Blind Sample ID = 25163-75159 Mean = 35.35 % Relative Standard Deviation = 8.7 Number of Observations = 4 Blind Sample ID = 25159-75161 Mean = 34.98 % Relative Standard Deviation = 3.2 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 62.11 % Relative Standard Deviation = 7.2 Number of Observations = 3 Blind Sample ID = 25155-75147
The SGPlot Procedure


- Cadmium, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01025, MCode: GF086
Dates: 10/03/91 through 10/19/04
Open Data Set

Mean = 3.00 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 75DIW-25155 Mean = 6.88 % Relative Standard Deviation = 4.5 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 2.13 % Relative Standard Deviation = 6.9 Number of Observations = 22 Blind Sample ID = 75DIW-25139 Mean = 1.78 % Relative Standard Deviation = 6.2 Number of Observations = 8 Blind Sample ID = 75DIW-25137 Mean = 2.75 % Relative Standard Deviation = 2.6 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 1.64 % Relative Standard Deviation = 29.6 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 3.00 % Relative Standard Deviation = 0.0 Number of Observations = 32 Blind Sample ID = 50DW-50123 Mean = 4.00 % Relative Standard Deviation = 0.0 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 7.42 % Relative Standard Deviation = 6.8 Number of Observations = 31 Blind Sample ID = 50DW-50115 Mean = 4.64 % Relative Standard Deviation = 2.5 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 9.64 % Relative Standard Deviation = 3.2 Number of Observations = 7 Blind Sample ID = 50DIW-50143 Mean = 3.95 % Relative Standard Deviation = 4.7 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 3.45 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 50DIW-50137 Mean = 25.37 % Relative Standard Deviation = 3.1 Number of Observations = 7 Blind Sample ID = 50DIW-50135 Mean = 11.54 % Relative Standard Deviation = 8.1 Number of Observations = 24 Blind Sample ID = 50DIW-50133 Mean = 3.08 % Relative Standard Deviation = 9.2 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 2.54 % Relative Standard Deviation = 6.1 Number of Observations = 16 Blind Sample ID = 50171-50DIW Mean = 7.81 % Relative Standard Deviation = 5.7 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 8.30 % Relative Standard Deviation = 4.9 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 12.03 % Relative Standard Deviation = 8.5 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 3.44 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 50163-50DIW Mean = 9.00 % Relative Standard Deviation = 3.4 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 3.03 % Relative Standard Deviation = 3.8 Number of Observations = 8 Blind Sample ID = 50157-50DIW Mean = 8.19 % Relative Standard Deviation = 4.7 Number of Observations = 26 Blind Sample ID = 50139-50141 Mean = 7.23 % Relative Standard Deviation = 5.1 Number of Observations = 8 Blind Sample ID = 50137-50139 Mean = 30.16 % Relative Standard Deviation = 7.2 Number of Observations = 23 Blind Sample ID = 50135-50139 Mean = 6.63 % Relative Standard Deviation = 7.8 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 5.50 % Relative Standard Deviation = 9.4 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 8.25 % Relative Standard Deviation = 7.0 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 4.13 % Relative Standard Deviation = 8.6 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 5.02 % Relative Standard Deviation = 5.1 Number of Observations = 46 Blind Sample ID = 33DW-67121 Mean = 9.12 % Relative Standard Deviation = 12.8 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 2.00 % Relative Standard Deviation = 18.6 Number of Observations = 30 Blind Sample ID = 33DW-67105 Mean = 2.00 % Relative Standard Deviation = 0.0 Number of Observations = 30 Blind Sample ID = 33DW-67103 Mean = 33.00 % Relative Standard Deviation = 6.8 Number of Observations = 29 Blind Sample ID = 33DIW-67135 Mean = 4.06 % Relative Standard Deviation = 5.7 Number of Observations = 36 Blind Sample ID = 33DIW-67131 Mean = 5.96 % Relative Standard Deviation = 3.5 Number of Observations = 45 Blind Sample ID = 33DIW-67127 Mean = 5.56 % Relative Standard Deviation = 9.1 Number of Observations = 32 Blind Sample ID = 25DW-75121 Mean = 2.23 % Relative Standard Deviation = 27.7 Number of Observations = 31 Blind Sample ID = 25DW-75105 Mean = 1.91 % Relative Standard Deviation = 15.5 Number of Observations = 32 Blind Sample ID = 25DW-75103 Mean = 5.16 % Relative Standard Deviation = 7.5 Number of Observations = 16 Blind Sample ID = 25DIW-75163 Mean = 18.49 % Relative Standard Deviation = 5.7 Number of Observations = 16 Blind Sample ID = 25DIW-75159 Mean = 12.04 % Relative Standard Deviation = 14.6 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 12.38 % Relative Standard Deviation = 9.6 Number of Observations = 16 Blind Sample ID = 25DIW-75147 Mean = 14.55 % Relative Standard Deviation = 7.3 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 38.05 % Relative Standard Deviation = 6.8 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 4.92 % Relative Standard Deviation = 5.9 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 8.89 % Relative Standard Deviation = 5.5 Number of Observations = 16 Blind Sample ID = 25169-75167 Mean = 20.13 % Relative Standard Deviation = 2.1 Number of Observations = 6 Blind Sample ID = 25163-75159 Mean = 19.08 % Relative Standard Deviation = 5.6 Number of Observations = 7 Blind Sample ID = 25159-75161 Mean = 14.37 % Relative Standard Deviation = 7.9 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 20.68 % Relative Standard Deviation = 8.6 Number of Observations = 8 Blind Sample ID = 25157-75159 Mean = 7.18 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 14.83 % Relative Standard Deviation = 9.1 Number of Observations = 8 Blind Sample ID = 25155-75147 Mean = 15.65 % Relative Standard Deviation = 8.5 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 11.14 % Relative Standard Deviation = 8.5 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 13.97 % Relative Standard Deviation = 8.6 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 7.10 % Relative Standard Deviation = 7.5 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 11.86 % Relative Standard Deviation = 9.0 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 8.33 % Relative Standard Deviation = 7.8 Number of Observations = 12 Blind Sample ID = 25123-75127 Mean = 5.00 % Relative Standard Deviation = 0.0 Number of Observations = 3 Blind Sample ID =
The SGPlot Procedure


- Cadmium, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01025, MCode: PLM43
Dates: 02/07/94 through 09/15/06
Open Data Set

Mean = 46.09 % Relative Standard Deviation = 2.0 Number of Observations = 34 Blind Sample ID = GT3 Mean = 2.94 % Relative Standard Deviation = 1.6 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 2.04 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 1.72 % Relative Standard Deviation = 3.5 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 1.94 % Relative Standard Deviation = 12.9 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 3.40 % Relative Standard Deviation = 3.1 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 6.40 % Relative Standard Deviation = 3.5 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 2.81 % Relative Standard Deviation = 2.3 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 4.68 % Relative Standard Deviation = 2.9 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 9.59 % Relative Standard Deviation = 1.8 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 25.51 % Relative Standard Deviation = 2.5 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 3.53 % Relative Standard Deviation = 2.9 Number of Observations = 22 Blind Sample ID = 50177-50179 Mean = 4.27 % Relative Standard Deviation = 3.1 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 5.04 % Relative Standard Deviation = 2.3 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 0.67 % Relative Standard Deviation = 4.3 Number of Observations = 28 Blind Sample ID = 50173-50DIW Mean = 2.54 % Relative Standard Deviation = 3.3 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 3.24 % Relative Standard Deviation = 4.1 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 5.49 % Relative Standard Deviation = 4.2 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 7.95 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 3.44 % Relative Standard Deviation = 2.9 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 8.90 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 2.93 % Relative Standard Deviation = 3.1 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 5.52 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 23.14 % Relative Standard Deviation = 2.2 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 13.99 % Relative Standard Deviation = 2.4 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 28.45 % Relative Standard Deviation = 1.8 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 15.07 % Relative Standard Deviation = 3.9 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 6.48 % Relative Standard Deviation = 9.6 Number of Observations = 31 Blind Sample ID = 50125-50123 Mean = 3.05 % Relative Standard Deviation = 3.5 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 7.04 % Relative Standard Deviation = 3.7 Number of Observations = 26 Blind Sample ID = 25177-75175 Mean = 7.59 % Relative Standard Deviation = 3.4 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 9.09 % Relative Standard Deviation = 2.8 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 5.50 % Relative Standard Deviation = 2.9 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 3.38 % Relative Standard Deviation = 3.9 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 22.98 % Relative Standard Deviation = 3.9 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 19.84 % Relative Standard Deviation = 2.3 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 15.33 % Relative Standard Deviation = 2.2 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 15.58 % Relative Standard Deviation = 2.0 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 14.25 % Relative Standard Deviation = 1.5 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 7.96 % Relative Standard Deviation = 4.6 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 4.94 % Relative Standard Deviation = 9.0 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Cadmium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01025, MCode: PLA11
Dates: 10/02/91 through 08/01/05
Open Data Set

Mean = 1.35 % Relative Standard Deviation = 44.8 Number of Observations = 17 Blind Sample ID = 67DW-33113 Mean = 4.28 % Relative Standard Deviation = 3.8 Number of Observations = 4 Blind Sample ID = 50175-50DIW Mean = 4.56 % Relative Standard Deviation = 5.7 Number of Observations = 4 Blind Sample ID = 50175-50173 Mean = 2.83 % Relative Standard Deviation = 38.4 Number of Observations = 4 Blind Sample ID = 50171-50DIW Mean = 5.00 % Relative Standard Deviation = 10.1 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 7.26 % Relative Standard Deviation = 16.5 Number of Observations = 4 Blind Sample ID = 50165-50169 Mean = 12.19 % Relative Standard Deviation = 6.4 Number of Observations = 4 Blind Sample ID = 50165-50167 Mean = 4.77 % Relative Standard Deviation = 45.7 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 9.19 % Relative Standard Deviation = 10.6 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 4.72 % Relative Standard Deviation = 43.5 Number of Observations = 8 Blind Sample ID = 50157-50DIW Mean = 5.67 % Relative Standard Deviation = 21.4 Number of Observations = 13 Blind Sample ID = 50155-50DIW Mean = 22.57 % Relative Standard Deviation = 8.1 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 13.94 % Relative Standard Deviation = 11.4 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 8.59 % Relative Standard Deviation = 12.3 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 6.98 % Relative Standard Deviation = 21.4 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 28.50 % Relative Standard Deviation = 6.1 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 6.33 % Relative Standard Deviation = 20.3 Number of Observations = 46 Blind Sample ID = 50131-50125 Mean = 29.44 % Relative Standard Deviation = 5.7 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 6.13 % Relative Standard Deviation = 12.1 Number of Observations = 24 Blind Sample ID = 50123-50121 Mean = 7.38 % Relative Standard Deviation = 14.9 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 4.61 % Relative Standard Deviation = 22.5 Number of Observations = 44 Blind Sample ID = 50121-50105 Mean = 7.55 % Relative Standard Deviation = 11.3 Number of Observations = 47 Blind Sample ID = 50115-50103 Mean = 2.58 % Relative Standard Deviation = 39.0 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 5.37 % Relative Standard Deviation = 12.0 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 5.00 % Relative Standard Deviation = 23.4 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 20.06 % Relative Standard Deviation = 8.7 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 38.88 % Relative Standard Deviation = 5.9 Number of Observations = 17 Blind Sample ID = 25DIW-75135 Mean = 4.00 % Relative Standard Deviation = 32.7 Number of Observations = 15 Blind Sample ID = 25DIW-75131 Mean = 7.70 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 25171-75175 Mean = 9.40 % Relative Standard Deviation = 6.0 Number of Observations = 4 Blind Sample ID = 25169-75167 Mean = 23.26 % Relative Standard Deviation = 3.3 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 19.83 % Relative Standard Deviation = 4.1 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 15.05 % Relative Standard Deviation = 10.4 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 14.32 % Relative Standard Deviation = 10.9 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 11.03 % Relative Standard Deviation = 11.3 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 7.18 % Relative Standard Deviation = 18.6 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 8.47 % Relative Standard Deviation = 15.5 Number of Observations = 13 Blind Sample ID = 25139-75137 Mean = 11.94 % Relative Standard Deviation = 14.2 Number of Observations = 16 Blind Sample ID = 25133-75127 Mean = 7.71 % Relative Standard Deviation = 19.9 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 8.20 % Relative Standard Deviation = 19.0 Number of Observations = 40 Blind Sample ID = 25125-75127 Mean = 4.78 % Relative Standard Deviation = 27.1 Number of Observations = 45 Blind Sample ID = 25125-75113 Mean = 8.00 % Relative Standard Deviation = 21.8 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 3.58 % Relative Standard Deviation = 25.2 Number of Observations = 40 Blind Sample ID = 25117-75113 Mean = 5.41 % Relative Standard Deviation = 11.8 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 4.60 % Relative Standard Deviation = 33.0 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Cadmium, FILS, GFAA, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01025, MCode: GF074
Dates: 10/08/91 through 09/13/95
Open Data Set

Mean = 0.81 % Relative Standard Deviation = 12.2 Number of Observations = 8 Blind Sample ID = 75DW-25117 Mean = 0.79 % Relative Standard Deviation = 52.8 Number of Observations = 8 Blind Sample ID = 75DW-25103 Mean = 1.73 % Relative Standard Deviation = 17.2 Number of Observations = 11 Blind Sample ID = 75DIW-25125 Mean = 1.64 % Relative Standard Deviation = 21.1 Number of Observations = 8 Blind Sample ID = 67DW-33113 Mean = 1.13 % Relative Standard Deviation = 25.5 Number of Observations = 8 Blind Sample ID = 50DW-50117 Mean = 0.96 % Relative Standard Deviation = 24.2 Number of Observations = 8 Blind Sample ID = 50DW-50103 Mean = 4.87 % Relative Standard Deviation = 3.4 Number of Observations = 8 Blind Sample ID = 33DW-67121 Mean = 5.61 % Relative Standard Deviation = 5.5 Number of Observations = 15 Blind Sample ID = 25DW-75121 Mean = 1.49 % Relative Standard Deviation = 12.7 Number of Observations = 8 Blind Sample ID = 25DW-75103
The SGPlot Procedure


- Cadmium, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01027, MCode: GF097
Dates: 10/03/91 through 08/18/05
Open Data Set

Mean = 2.97 % Relative Standard Deviation = 5.3 Number of Observations = 14 Blind Sample ID = 75DIW-25155 Mean = 6.82 % Relative Standard Deviation = 5.8 Number of Observations = 24 Blind Sample ID = 75DIW-25151 Mean = 1.71 % Relative Standard Deviation = 5.1 Number of Observations = 10 Blind Sample ID = 75DIW-25137 Mean = 2.68 % Relative Standard Deviation = 7.4 Number of Observations = 9 Blind Sample ID = 75169-25DIW Mean = 1.49 % Relative Standard Deviation = 34.0 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 3.67 % Relative Standard Deviation = 24.2 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 5.00 % Relative Standard Deviation = 0.0 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 4.79 % Relative Standard Deviation = 3.4 Number of Observations = 18 Blind Sample ID = 50DIW-50145 Mean = 9.21 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 3.86 % Relative Standard Deviation = 3.6 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 3.36 % Relative Standard Deviation = 3.4 Number of Observations = 16 Blind Sample ID = 50DIW-50137 Mean = 25.37 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 4.16 % Relative Standard Deviation = 7.0 Number of Observations = 8 Blind Sample ID = 50175-50DIW Mean = 4.69 % Relative Standard Deviation = 5.3 Number of Observations = 11 Blind Sample ID = 50175-50173 Mean = 0.65 % Relative Standard Deviation = 15.8 Number of Observations = 6 Blind Sample ID = 50173-50DIW Mean = 2.45 % Relative Standard Deviation = 5.4 Number of Observations = 32 Blind Sample ID = 50171-50DIW Mean = 3.23 % Relative Standard Deviation = 5.3 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 7.66 % Relative Standard Deviation = 6.0 Number of Observations = 15 Blind Sample ID = 50167-50171 Mean = 8.04 % Relative Standard Deviation = 5.5 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 12.40 % Relative Standard Deviation = 9.3 Number of Observations = 7 Blind Sample ID = 50165-50167 Mean = 3.33 % Relative Standard Deviation = 3.6 Number of Observations = 12 Blind Sample ID = 50163-50DIW Mean = 8.61 % Relative Standard Deviation = 7.3 Number of Observations = 12 Blind Sample ID = 50161-50DIW Mean = 2.93 % Relative Standard Deviation = 4.6 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 5.48 % Relative Standard Deviation = 4.9 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 14.00 % Relative Standard Deviation = 7.5 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 8.16 % Relative Standard Deviation = 4.1 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 7.90 % Relative Standard Deviation = 5.6 Number of Observations = 17 Blind Sample ID = 50139-50141 Mean = 7.75 % Relative Standard Deviation = 3.8 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 28.74 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 50135-50139 Mean = 27.62 % Relative Standard Deviation = 3.6 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 14.50 % Relative Standard Deviation = 8.1 Number of Observations = 12 Blind Sample ID = 50125-50133 Mean = 6.54 % Relative Standard Deviation = 8.8 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 6.50 % Relative Standard Deviation = 8.2 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 5.31 % Relative Standard Deviation = 11.3 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 5.00 % Relative Standard Deviation = 0.0 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 7.81 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 12.45 % Relative Standard Deviation = 6.6 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 4.00 % Relative Standard Deviation = 0.0 Number of Observations = 28 Blind Sample ID = 33DW-67123 Mean = 4.93 % Relative Standard Deviation = 5.4 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 9.06 % Relative Standard Deviation = 13.2 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 32.25 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 4.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 17.58 % Relative Standard Deviation = 10.1 Number of Observations = 19 Blind Sample ID = 33127-67133 Mean = 6.85 % Relative Standard Deviation = 7.1 Number of Observations = 20 Blind Sample ID = 33127-67123 Mean = 3.07 % Relative Standard Deviation = 19.1 Number of Observations = 44 Blind Sample ID = 25DW-75113 Mean = 2.43 % Relative Standard Deviation = 21.1 Number of Observations = 14 Blind Sample ID = 25DW-75105 Mean = 5.00 % Relative Standard Deviation = 4.8 Number of Observations = 16 Blind Sample ID = 25DIW-75163 Mean = 17.74 % Relative Standard Deviation = 8.3 Number of Observations = 15 Blind Sample ID = 25DIW-75159 Mean = 11.67 % Relative Standard Deviation = 9.3 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 11.39 % Relative Standard Deviation = 10.8 Number of Observations = 19 Blind Sample ID = 25DIW-75147 Mean = 13.96 % Relative Standard Deviation = 6.3 Number of Observations = 15 Blind Sample ID = 25DIW-75143 Mean = 36.57 % Relative Standard Deviation = 7.3 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 4.91 % Relative Standard Deviation = 6.1 Number of Observations = 11 Blind Sample ID = 25DIW-75131 Mean = 6.31 % Relative Standard Deviation = 7.4 Number of Observations = 55 Blind Sample ID = 25DIW-75127 Mean = 7.33 % Relative Standard Deviation = 5.2 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 8.70 % Relative Standard Deviation = 5.4 Number of Observations = 16 Blind Sample ID = 25169-75167 Mean = 20.40 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 22.14 % Relative Standard Deviation = 7.0 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 18.88 % Relative Standard Deviation = 8.7 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 13.52 % Relative Standard Deviation = 9.0 Number of Observations = 6 Blind Sample ID = 25159-75155 Mean = 19.16 % Relative Standard Deviation = 8.4 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 7.00 % Relative Standard Deviation = 5.6 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 14.01 % Relative Standard Deviation = 8.2 Number of Observations = 8 Blind Sample ID = 25155-75147 Mean = 14.63 % Relative Standard Deviation = 14.7 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 10.66 % Relative Standard Deviation = 5.0 Number of Observations = 14 Blind Sample ID = 25147-75145 Mean = 13.21 % Relative Standard Deviation = 12.7 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 7.81 % Relative Standard Deviation = 4.3 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 6.94 % Relative Standard Deviation = 4.0 Number of Observations = 13 Blind Sample ID = 25139-75137 Mean = 38.96 % Relative Standard Deviation = 4.2 Number of Observations = 14 Blind Sample ID = 25137-75135 Mean = 11.86 % Relative Standard Deviation = 7.6 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 8.20 % Relative Standard Deviation = 7.4 Number of Observations = 40 Blind Sample ID = 25125-75127 Mean = 5.05 % Relative Standard Deviation = 4.4 Number of Observations = 20 Blind Sample ID = 25125-75113 Mean = 7.75 % Relative Standard Deviation = 5.8 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Cadmium, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01027, MCode: PLM47
Dates: 10/10/01 through 09/19/06
Open Data Set

Mean = 3.28 % Relative Standard Deviation = 2.5 Number of Observations = 23 Blind Sample ID = 75179-25DIW Mean = 6.18 % Relative Standard Deviation = 2.0 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 3.64 % Relative Standard Deviation = 1.7 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 2.69 % Relative Standard Deviation = 2.2 Number of Observations = 11 Blind Sample ID = 75169-25DIW Mean = 3.48 % Relative Standard Deviation = 1.4 Number of Observations = 26 Blind Sample ID = 50177-50179 Mean = 4.14 % Relative Standard Deviation = 2.7 Number of Observations = 36 Blind Sample ID = 50175-50DIW Mean = 4.82 % Relative Standard Deviation = 1.8 Number of Observations = 19 Blind Sample ID = 50175-50173 Mean = 0.65 % Relative Standard Deviation = 3.8 Number of Observations = 26 Blind Sample ID = 50173-50DIW Mean = 2.45 % Relative Standard Deviation = 3.2 Number of Observations = 12 Blind Sample ID = 50171-50DIW Mean = 3.13 % Relative Standard Deviation = 1.7 Number of Observations = 16 Blind Sample ID = 50171-50173 Mean = 5.28 % Relative Standard Deviation = 0.8 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 7.70 % Relative Standard Deviation = 2.6 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 8.21 % Relative Standard Deviation = 0.7 Number of Observations = 3 Blind Sample ID = 50165-50169 Mean = 11.67 % Relative Standard Deviation = 3.1 Number of Observations = 4 Blind Sample ID = 50165-50167 Mean = 4.97 % Relative Standard Deviation = 2.5 Number of Observations = 3 Blind Sample ID = 25DIW-75163 Mean = 3.03 % Relative Standard Deviation = 2.2 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 6.85 % Relative Standard Deviation = 2.1 Number of Observations = 31 Blind Sample ID = 25177-75175 Mean = 7.46 % Relative Standard Deviation = 2.6 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 3.23 % Relative Standard Deviation = 0.9 Number of Observations = 8 Blind Sample ID = 25165-75DIW Mean = 19.70 % Relative Standard Deviation = 1.4 Number of Observations = 4 Blind Sample ID = 25163-75159 Mean = 18.98 % Relative Standard Deviation = 1.4 Number of Observations = 4 Blind Sample ID = 25159-75161
The SGPlot Procedure


- Chromium, FIL, DCP -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01030, MCode: DCP04
Dates: 10/03/91 through 12/23/93
Open Data Set

Mean = 1.17 % Relative Standard Deviation = 32.9 Number of Observations = 18 Blind Sample ID = 67DW-33113 Mean = 5.13 % Relative Standard Deviation = 12.5 Number of Observations = 8 Blind Sample ID = 50DW-50123 Mean = 7.25 % Relative Standard Deviation = 31.9 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 17.24 % Relative Standard Deviation = 8.0 Number of Observations = 29 Blind Sample ID = 50DW-50115 Mean = 17.07 % Relative Standard Deviation = 11.0 Number of Observations = 15 Blind Sample ID = 50121-50105 Mean = 20.63 % Relative Standard Deviation = 5.8 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 6.86 % Relative Standard Deviation = 10.1 Number of Observations = 7 Blind Sample ID = 33DW-67123 Mean = 10.45 % Relative Standard Deviation = 11.0 Number of Observations = 20 Blind Sample ID = 33DW-67121 Mean = 22.63 % Relative Standard Deviation = 16.6 Number of Observations = 16 Blind Sample ID = 33DW-67115 Mean = 13.14 % Relative Standard Deviation = 16.4 Number of Observations = 29 Blind Sample ID = 33DW-67105 Mean = 3.23 % Relative Standard Deviation = 27.8 Number of Observations = 30 Blind Sample ID = 33DW-67103 Mean = 11.75 % Relative Standard Deviation = 8.8 Number of Observations = 8 Blind Sample ID = 25DW-75121 Mean = 1.75 % Relative Standard Deviation = 54.7 Number of Observations = 4 Blind Sample ID = 25DW-75113 Mean = 14.97 % Relative Standard Deviation = 26.1 Number of Observations = 30 Blind Sample ID = 25DW-75105 Mean = 3.15 % Relative Standard Deviation = 34.4 Number of Observations = 26 Blind Sample ID = 25DW-75103 Mean = 1.20 % Relative Standard Deviation = 37.3 Number of Observations = 5 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Chromium, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01030, MCode: GF075
Dates: 12/28/93 through 09/07/05
Open Data Set

Mean = 1.96 % Relative Standard Deviation = 12.4 Number of Observations = 24 Blind Sample ID = GT3 Mean = 2.44 % Relative Standard Deviation = 14.8 Number of Observations = 21 Blind Sample ID = 75DIW-25155 Mean = 7.96 % Relative Standard Deviation = 11.2 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 1.96 % Relative Standard Deviation = 7.5 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 4.86 % Relative Standard Deviation = 11.2 Number of Observations = 10 Blind Sample ID = 75DIW-25137 Mean = 6.21 % Relative Standard Deviation = 10.9 Number of Observations = 45 Blind Sample ID = 75169-25DIW Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 6 Blind Sample ID = 67DW-33113 Mean = 5.57 % Relative Standard Deviation = 7.2 Number of Observations = 24 Blind Sample ID = 50DW-50123 Mean = 7.83 % Relative Standard Deviation = 5.8 Number of Observations = 20 Blind Sample ID = 50DIW-50145 Mean = 18.73 % Relative Standard Deviation = 3.2 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 3.86 % Relative Standard Deviation = 8.1 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 10.17 % Relative Standard Deviation = 4.3 Number of Observations = 16 Blind Sample ID = 50DIW-50137 Mean = 39.40 % Relative Standard Deviation = 3.8 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 19.04 % Relative Standard Deviation = 3.6 Number of Observations = 24 Blind Sample ID = 50DIW-50133 Mean = 5.66 % Relative Standard Deviation = 6.0 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 1.13 % Relative Standard Deviation = 18.7 Number of Observations = 19 Blind Sample ID = 50175-50DIW Mean = 3.95 % Relative Standard Deviation = 8.4 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 2.73 % Relative Standard Deviation = 8.4 Number of Observations = 21 Blind Sample ID = 50173-50DIW Mean = 1.65 % Relative Standard Deviation = 10.4 Number of Observations = 47 Blind Sample ID = 50171-50DIW Mean = 4.15 % Relative Standard Deviation = 20.2 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 11.55 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 50167-50DIW Mean = 13.58 % Relative Standard Deviation = 7.1 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 13.84 % Relative Standard Deviation = 7.6 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 21.53 % Relative Standard Deviation = 6.2 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 20.22 % Relative Standard Deviation = 10.0 Number of Observations = 32 Blind Sample ID = 50163-50DIW Mean = 17.91 % Relative Standard Deviation = 5.3 Number of Observations = 30 Blind Sample ID = 50161-50DIW Mean = 16.30 % Relative Standard Deviation = 3.9 Number of Observations = 32 Blind Sample ID = 50157-50DIW Mean = 4.19 % Relative Standard Deviation = 5.6 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 32.84 % Relative Standard Deviation = 5.8 Number of Observations = 12 Blind Sample ID = 50143-50151 Mean = 11.86 % Relative Standard Deviation = 6.0 Number of Observations = 33 Blind Sample ID = 50139-50141 Mean = 43.11 % Relative Standard Deviation = 6.6 Number of Observations = 20 Blind Sample ID = 50135-50139 Mean = 14.43 % Relative Standard Deviation = 3.7 Number of Observations = 7 Blind Sample ID = 50123-50121 Mean = 7.71 % Relative Standard Deviation = 6.4 Number of Observations = 21 Blind Sample ID = 33DW-67123 Mean = 11.24 % Relative Standard Deviation = 5.3 Number of Observations = 25 Blind Sample ID = 33DW-67121 Mean = 51.66 % Relative Standard Deviation = 6.5 Number of Observations = 29 Blind Sample ID = 33DIW-67135 Mean = 12.58 % Relative Standard Deviation = 6.7 Number of Observations = 36 Blind Sample ID = 33DIW-67131 Mean = 8.08 % Relative Standard Deviation = 7.3 Number of Observations = 45 Blind Sample ID = 33DIW-67127 Mean = 27.74 % Relative Standard Deviation = 4.6 Number of Observations = 19 Blind Sample ID = 33127-67133 Mean = 11.95 % Relative Standard Deviation = 5.7 Number of Observations = 20 Blind Sample ID = 33127-67123 Mean = 12.60 % Relative Standard Deviation = 6.5 Number of Observations = 25 Blind Sample ID = 25DW-75121 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 25DW-75113 Mean = 30.21 % Relative Standard Deviation = 7.9 Number of Observations = 16 Blind Sample ID = 25DIW-75163 Mean = 22.04 % Relative Standard Deviation = 2.8 Number of Observations = 16 Blind Sample ID = 25DIW-75159 Mean = 11.91 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 10.34 % Relative Standard Deviation = 4.2 Number of Observations = 15 Blind Sample ID = 25DIW-75147 Mean = 27.69 % Relative Standard Deviation = 4.5 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 56.84 % Relative Standard Deviation = 7.2 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 13.83 % Relative Standard Deviation = 6.0 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 9.18 % Relative Standard Deviation = 5.9 Number of Observations = 39 Blind Sample ID = 25DIW-75127 Mean = 2.53 % Relative Standard Deviation = 26.5 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 20.00 % Relative Standard Deviation = 5.6 Number of Observations = 47 Blind Sample ID = 25169-75167 Mean = 12.17 % Relative Standard Deviation = 9.6 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 4.82 % Relative Standard Deviation = 8.0 Number of Observations = 16 Blind Sample ID = 25165-75DIW Mean = 30.71 % Relative Standard Deviation = 7.6 Number of Observations = 7 Blind Sample ID = 25163-75159 Mean = 29.38 % Relative Standard Deviation = 8.2 Number of Observations = 23 Blind Sample ID = 25161-75159 Mean = 32.66 % Relative Standard Deviation = 4.7 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 13.70 % Relative Standard Deviation = 7.6 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 29.15 % Relative Standard Deviation = 5.1 Number of Observations = 31 Blind Sample ID = 25157-75159 Mean = 26.87 % Relative Standard Deviation = 6.9 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 14.09 % Relative Standard Deviation = 6.5 Number of Observations = 11 Blind Sample ID = 25155-75153 Mean = 12.83 % Relative Standard Deviation = 9.6 Number of Observations = 8 Blind Sample ID = 25155-75147 Mean = 15.11 % Relative Standard Deviation = 7.0 Number of Observations = 21 Blind Sample ID = 25151-75155 Mean = 14.90 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 13.69 % Relative Standard Deviation = 6.6 Number of Observations = 19 Blind Sample ID = 25145-75147 Mean = 18.07 % Relative Standard Deviation = 7.7 Number of Observations = 6 Blind Sample ID = 25139-75137 Mean = 62.42 % Relative Standard Deviation = 5.9 Number of Observations = 14 Blind Sample ID = 25137-75135 Mean = 18.14 % Relative Standard Deviation = 8.1 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 10.39 % Relative Standard Deviation = 6.3 Number of Observations = 40 Blind Sample ID = 25125-75127 Mean = 1.89 % Relative Standard Deviation = 11.5 Number of Observations = 15 Blind Sample ID = 25125-75113 Mean = 12.08 % Relative Standard Deviation = 6.6 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Chromium, FIL, GFAA, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01030, MCode: GF076
Dates: 10/08/91 through 09/27/94
Open Data Set

Mean = 3.63 % Relative Standard Deviation = 30.3 Number of Observations = 8 Blind Sample ID = 75DW-25117 Mean = 1.69 % Relative Standard Deviation = 49.8 Number of Observations = 8 Blind Sample ID = 75DW-25103 Mean = 1.39 % Relative Standard Deviation = 146.8 Number of Observations = 8 Blind Sample ID = 67DW-33113 Mean = 6.08 % Relative Standard Deviation = 7.6 Number of Observations = 8 Blind Sample ID = 50DW-50117 Mean = 2.74 % Relative Standard Deviation = 27.1 Number of Observations = 8 Blind Sample ID = 50DW-50103 Mean = 15.00 % Relative Standard Deviation = 64.8 Number of Observations = 7 Blind Sample ID = 33DW-67121 Mean = 12.91 % Relative Standard Deviation = 7.3 Number of Observations = 11 Blind Sample ID = 25DW-75121 Mean = 2.86 % Relative Standard Deviation = 41.0 Number of Observations = 8 Blind Sample ID = 25DW-75103
The SGPlot Procedure


- Chromium, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01030, MCode: PLM40
Dates: 02/07/94 through 05/09/00
Open Data Set

Mean = 1.72 % Relative Standard Deviation = 5.5 Number of Observations = 8 Blind Sample ID = GT3 Mean = 2.17 % Relative Standard Deviation = 5.1 Number of Observations = 3 Blind Sample ID = 75DIW-25155 Mean = 1.92 % Relative Standard Deviation = 7.6 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 4.81 % Relative Standard Deviation = 4.5 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 7.44 % Relative Standard Deviation = 4.3 Number of Observations = 16 Blind Sample ID = 50DIW-50145 Mean = 18.27 % Relative Standard Deviation = 1.8 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 38.95 % Relative Standard Deviation = 3.3 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 33.56 % Relative Standard Deviation = 3.4 Number of Observations = 17 Blind Sample ID = 50143-50151 Mean = 25.07 % Relative Standard Deviation = 2.2 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 48.04 % Relative Standard Deviation = 2.3 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 19.73 % Relative Standard Deviation = 4.5 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 6.87 % Relative Standard Deviation = 6.2 Number of Observations = 31 Blind Sample ID = 50125-50123 Mean = 14.43 % Relative Standard Deviation = 6.3 Number of Observations = 6 Blind Sample ID = 25151-75155 Mean = 12.81 % Relative Standard Deviation = 3.4 Number of Observations = 14 Blind Sample ID = 25145-75147 Mean = 9.15 % Relative Standard Deviation = 5.1 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 1.69 % Relative Standard Deviation = 28.4 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Chromium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01030, MCode: PLA11
Dates: 10/02/91 through 09/29/06
Open Data Set

Mean = 3.14 % Relative Standard Deviation = 8.4 Number of Observations = 8 Blind Sample ID = 75179-25DIW Mean = 1.48 % Relative Standard Deviation = 21.6 Number of Observations = 8 Blind Sample ID = 75175-25DIW Mean = 3.11 % Relative Standard Deviation = 23.1 Number of Observations = 29 Blind Sample ID = 75171-25DIW Mean = 6.08 % Relative Standard Deviation = 14.8 Number of Observations = 4 Blind Sample ID = 75169-25DIW Mean = 5.00 % Relative Standard Deviation = 0.0 Number of Observations = 17 Blind Sample ID = 67DW-33113 Mean = 6.72 % Relative Standard Deviation = 8.3 Number of Observations = 8 Blind Sample ID = 50177-50179 Mean = 1.33 % Relative Standard Deviation = 11.7 Number of Observations = 8 Blind Sample ID = 50175-50DIW Mean = 4.41 % Relative Standard Deviation = 8.8 Number of Observations = 8 Blind Sample ID = 50175-50173 Mean = 3.27 % Relative Standard Deviation = 12.8 Number of Observations = 8 Blind Sample ID = 50173-50DIW Mean = 1.80 % Relative Standard Deviation = 11.5 Number of Observations = 7 Blind Sample ID = 50171-50DIW Mean = 5.15 % Relative Standard Deviation = 8.8 Number of Observations = 4 Blind Sample ID = 50171-50173 Mean = 10.46 % Relative Standard Deviation = 9.8 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 13.97 % Relative Standard Deviation = 6.4 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 12.85 % Relative Standard Deviation = 8.1 Number of Observations = 4 Blind Sample ID = 50165-50169 Mean = 20.58 % Relative Standard Deviation = 6.0 Number of Observations = 4 Blind Sample ID = 50165-50167 Mean = 18.99 % Relative Standard Deviation = 12.2 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 18.76 % Relative Standard Deviation = 2.5 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 15.97 % Relative Standard Deviation = 17.3 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 7.75 % Relative Standard Deviation = 12.9 Number of Observations = 6 Blind Sample ID = 50155-50DIW Mean = 33.14 % Relative Standard Deviation = 9.0 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 27.71 % Relative Standard Deviation = 6.1 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 14.57 % Relative Standard Deviation = 13.3 Number of Observations = 12 Blind Sample ID = 50139-50145 Mean = 18.00 % Relative Standard Deviation = 12.5 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 50.09 % Relative Standard Deviation = 6.2 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 11.48 % Relative Standard Deviation = 16.2 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 42.00 % Relative Standard Deviation = 5.7 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 12.38 % Relative Standard Deviation = 14.5 Number of Observations = 24 Blind Sample ID = 50123-50121 Mean = 9.46 % Relative Standard Deviation = 14.6 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 17.80 % Relative Standard Deviation = 11.9 Number of Observations = 44 Blind Sample ID = 50121-50105 Mean = 20.11 % Relative Standard Deviation = 6.2 Number of Observations = 47 Blind Sample ID = 50115-50103 Mean = 14.90 % Relative Standard Deviation = 9.5 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 10.80 % Relative Standard Deviation = 13.2 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 11.52 % Relative Standard Deviation = 14.1 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 22.91 % Relative Standard Deviation = 10.7 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 60.53 % Relative Standard Deviation = 2.8 Number of Observations = 17 Blind Sample ID = 25DIW-75135 Mean = 13.61 % Relative Standard Deviation = 14.1 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 7.80 % Relative Standard Deviation = 5.2 Number of Observations = 8 Blind Sample ID = 25179-75177 Mean = 3.66 % Relative Standard Deviation = 9.4 Number of Observations = 8 Blind Sample ID = 25177-75175 Mean = 2.63 % Relative Standard Deviation = 10.8 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 19.47 % Relative Standard Deviation = 4.6 Number of Observations = 4 Blind Sample ID = 25169-75167 Mean = 5.11 % Relative Standard Deviation = 20.7 Number of Observations = 3 Blind Sample ID = 25165-75DIW Mean = 30.04 % Relative Standard Deviation = 1.9 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 29.54 % Relative Standard Deviation = 5.9 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 14.47 % Relative Standard Deviation = 23.0 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 12.33 % Relative Standard Deviation = 10.1 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 14.28 % Relative Standard Deviation = 16.7 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 10.90 % Relative Standard Deviation = 19.6 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 17.83 % Relative Standard Deviation = 9.3 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 18.44 % Relative Standard Deviation = 10.1 Number of Observations = 16 Blind Sample ID = 25133-75127 Mean = 6.26 % Relative Standard Deviation = 21.8 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 9.29 % Relative Standard Deviation = 18.7 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 5.00 % Relative Standard Deviation = 0.0 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 11.29 % Relative Standard Deviation = 12.7 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 5.13 % Relative Standard Deviation = 7.9 Number of Observations = 40 Blind Sample ID = 25117-75113 Mean = 5.31 % Relative Standard Deviation = 16.8 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 14.80 % Relative Standard Deviation = 13.8 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Chromium, FIL, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01030, MCode: PLM10
Dates: 09/16/05 through 09/19/06
Open Data Set

Mean = 3.10 % Relative Standard Deviation = 4.1 Number of Observations = 19 Blind Sample ID = 75179-25DIW Mean = 1.46 % Relative Standard Deviation = 4.8 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 6.17 % Relative Standard Deviation = 3.9 Number of Observations = 15 Blind Sample ID = 50177-50179 Mean = 1.00 % Relative Standard Deviation = 8.6 Number of Observations = 19 Blind Sample ID = 50175-50DIW Mean = 2.32 % Relative Standard Deviation = 7.2 Number of Observations = 7 Blind Sample ID = 50173-50DIW Mean = 7.15 % Relative Standard Deviation = 5.1 Number of Observations = 20 Blind Sample ID = 25179-75177 Mean = 3.40 % Relative Standard Deviation = 4.2 Number of Observations = 21 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Chromium, UNF, DCP -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01034, MCode: DCP07
Dates: 10/03/91 through 12/13/93
Open Data Set

Mean = 1.11 % Relative Standard Deviation = 29.1 Number of Observations = 18 Blind Sample ID = 67DW-33113 Mean = 4.25 % Relative Standard Deviation = 49.3 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 7.11 % Relative Standard Deviation = 28.5 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 5.00 % Relative Standard Deviation = 69.3 Number of Observations = 3 Blind Sample ID = 50125-50123 Mean = 17.80 % Relative Standard Deviation = 17.8 Number of Observations = 15 Blind Sample ID = 50121-50105 Mean = 12.40 % Relative Standard Deviation = 12.7 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 19.56 % Relative Standard Deviation = 7.9 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 25.82 % Relative Standard Deviation = 6.9 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 10.62 % Relative Standard Deviation = 9.8 Number of Observations = 13 Blind Sample ID = 33DW-67121 Mean = 22.06 % Relative Standard Deviation = 13.9 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 1.07 % Relative Standard Deviation = 24.2 Number of Observations = 15 Blind Sample ID = 25DW-75113 Mean = 14.33 % Relative Standard Deviation = 11.6 Number of Observations = 12 Blind Sample ID = 25DW-75105
The SGPlot Procedure


- Chromium, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01034, MCode: GF094
Dates: 12/28/93 through 09/01/05
Open Data Set

Mean = 2.09 % Relative Standard Deviation = 19.0 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 7.39 % Relative Standard Deviation = 4.4 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 5.84 % Relative Standard Deviation = 10.4 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 1.10 % Relative Standard Deviation = 22.3 Number of Observations = 6 Blind Sample ID = 67DW-33113 Mean = 2.17 % Relative Standard Deviation = 12.1 Number of Observations = 10 Blind Sample ID = 50DW-50125 Mean = 7.34 % Relative Standard Deviation = 2.7 Number of Observations = 7 Blind Sample ID = 50DIW-50145 Mean = 18.20 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 3.56 % Relative Standard Deviation = 6.2 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 9.61 % Relative Standard Deviation = 5.8 Number of Observations = 8 Blind Sample ID = 50DIW-50137 Mean = 39.43 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 1.14 % Relative Standard Deviation = 14.4 Number of Observations = 11 Blind Sample ID = 50175-50DIW Mean = 3.49 % Relative Standard Deviation = 12.4 Number of Observations = 24 Blind Sample ID = 50175-50173 Mean = 2.72 % Relative Standard Deviation = 11.1 Number of Observations = 25 Blind Sample ID = 50173-50DIW Mean = 1.62 % Relative Standard Deviation = 7.7 Number of Observations = 40 Blind Sample ID = 50171-50DIW Mean = 4.30 % Relative Standard Deviation = 18.4 Number of Observations = 24 Blind Sample ID = 50171-50173 Mean = 10.66 % Relative Standard Deviation = 9.3 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 13.20 % Relative Standard Deviation = 5.8 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 12.63 % Relative Standard Deviation = 5.9 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 21.94 % Relative Standard Deviation = 5.6 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 17.97 % Relative Standard Deviation = 13.0 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 17.14 % Relative Standard Deviation = 9.4 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 14.78 % Relative Standard Deviation = 9.2 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 3.92 % Relative Standard Deviation = 10.3 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 25.50 % Relative Standard Deviation = 7.8 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 11.33 % Relative Standard Deviation = 8.1 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 17.26 % Relative Standard Deviation = 6.3 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 48.54 % Relative Standard Deviation = 4.0 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 20.77 % Relative Standard Deviation = 5.6 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 7.64 % Relative Standard Deviation = 5.2 Number of Observations = 25 Blind Sample ID = 50125-50123 Mean = 14.29 % Relative Standard Deviation = 7.8 Number of Observations = 7 Blind Sample ID = 50123-50121 Mean = 7.45 % Relative Standard Deviation = 6.0 Number of Observations = 6 Blind Sample ID = 33DW-67123 Mean = 51.50 % Relative Standard Deviation = 5.9 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 12.25 % Relative Standard Deviation = 5.1 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 9 Blind Sample ID = 25DW-75113 Mean = 30.03 % Relative Standard Deviation = 13.8 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 18.51 % Relative Standard Deviation = 7.8 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 11.61 % Relative Standard Deviation = 9.3 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 10.21 % Relative Standard Deviation = 9.3 Number of Observations = 11 Blind Sample ID = 25DIW-75147 Mean = 26.58 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 58.44 % Relative Standard Deviation = 7.0 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 13.45 % Relative Standard Deviation = 6.1 Number of Observations = 11 Blind Sample ID = 25DIW-75131 Mean = 8.55 % Relative Standard Deviation = 9.5 Number of Observations = 16 Blind Sample ID = 25DIW-75127 Mean = 2.25 % Relative Standard Deviation = 10.6 Number of Observations = 24 Blind Sample ID = 25171-75175 Mean = 19.32 % Relative Standard Deviation = 5.0 Number of Observations = 19 Blind Sample ID = 25169-75167 Mean = 4.43 % Relative Standard Deviation = 11.9 Number of Observations = 5 Blind Sample ID = 25165-75DIW Mean = 29.70 % Relative Standard Deviation = 4.4 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 26.98 % Relative Standard Deviation = 6.9 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 31.54 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 13.14 % Relative Standard Deviation = 4.3 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 27.88 % Relative Standard Deviation = 9.6 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 24.93 % Relative Standard Deviation = 8.0 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 11.85 % Relative Standard Deviation = 3.2 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 13.94 % Relative Standard Deviation = 7.4 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 13.88 % Relative Standard Deviation = 7.3 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 12.63 % Relative Standard Deviation = 6.0 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 9.52 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 16.06 % Relative Standard Deviation = 6.8 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 17.57 % Relative Standard Deviation = 6.5 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 11.63 % Relative Standard Deviation = 10.4 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Chromium, UNF, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01034, MCode: PLM11
Dates: 09/30/05 through 09/08/06
Open Data Set

Mean = 3.02 % Relative Standard Deviation = 6.9 Number of Observations = 12 Blind Sample ID = 75179-25DIW Mean = 1.46 % Relative Standard Deviation = 7.7 Number of Observations = 12 Blind Sample ID = 75175-25DIW Mean = 6.04 % Relative Standard Deviation = 5.1 Number of Observations = 13 Blind Sample ID = 50177-50179 Mean = 0.96 % Relative Standard Deviation = 5.4 Number of Observations = 17 Blind Sample ID = 50175-50DIW Mean = 6.85 % Relative Standard Deviation = 5.1 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 3.40 % Relative Standard Deviation = 3.5 Number of Observations = 16 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Cobalt, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01035, MCode: GF087
Dates: 10/03/91 through 11/14/02
Open Data Set

Mean = 3.85 % Relative Standard Deviation = 14.0 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 8.82 % Relative Standard Deviation = 4.5 Number of Observations = 6 Blind Sample ID = 50DIW-50143 Mean = 3.70 % Relative Standard Deviation = 6.3 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 21.51 % Relative Standard Deviation = 4.3 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 5.25 % Relative Standard Deviation = 8.8 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 12.38 % Relative Standard Deviation = 8.3 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 9.69 % Relative Standard Deviation = 8.2 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 3.75 % Relative Standard Deviation = 12.3 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 3.29 % Relative Standard Deviation = 14.3 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 9.59 % Relative Standard Deviation = 30.9 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 27.25 % Relative Standard Deviation = 4.3 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 17.17 % Relative Standard Deviation = 6.0 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 9.24 % Relative Standard Deviation = 8.7 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 31.52 % Relative Standard Deviation = 4.6 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 18.58 % Relative Standard Deviation = 6.3 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 13.55 % Relative Standard Deviation = 9.4 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 13.07 % Relative Standard Deviation = 6.8 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 14.29 % Relative Standard Deviation = 3.4 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 10.33 % Relative Standard Deviation = 6.3 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Cobalt, FIL, GFAA, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01035, MCode: AA015
Dates: 10/08/91 through 09/30/92
Open Data Set

Mean = 1.34 % Relative Standard Deviation = 65.9 Number of Observations = 8 Blind Sample ID = 75DW-25103 Mean = 1.85 % Relative Standard Deviation = 22.4 Number of Observations = 8 Blind Sample ID = 50DW-50103 Mean = 3.26 % Relative Standard Deviation = 33.5 Number of Observations = 8 Blind Sample ID = 25DW-75103
The SGPlot Procedure


- Cobalt, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01035, MCode: PLM43
Dates: 02/07/94 through 07/19/06
Open Data Set

Mean = 0.89 % Relative Standard Deviation = 35.0 Number of Observations = 8 Blind Sample ID = GT3 Mean = 6.85 % Relative Standard Deviation = 3.5 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 1.88 % Relative Standard Deviation = 7.7 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 2.31 % Relative Standard Deviation = 20.7 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 0.83 % Relative Standard Deviation = 4.8 Number of Observations = 15 Blind Sample ID = 75179-25DIW Mean = 5.93 % Relative Standard Deviation = 4.5 Number of Observations = 12 Blind Sample ID = 75175-25DIW Mean = 1.54 % Relative Standard Deviation = 2.1 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 5.19 % Relative Standard Deviation = 4.2 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 8.54 % Relative Standard Deviation = 2.0 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 20.33 % Relative Standard Deviation = 3.3 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 1.91 % Relative Standard Deviation = 3.1 Number of Observations = 10 Blind Sample ID = 50177-50179 Mean = 3.69 % Relative Standard Deviation = 6.2 Number of Observations = 33 Blind Sample ID = 50175-50DIW Mean = 4.34 % Relative Standard Deviation = 7.0 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 0.62 % Relative Standard Deviation = 7.9 Number of Observations = 23 Blind Sample ID = 50173-50DIW Mean = 2.38 % Relative Standard Deviation = 4.9 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 2.94 % Relative Standard Deviation = 7.3 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 3.47 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 5.99 % Relative Standard Deviation = 3.1 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 5.99 % Relative Standard Deviation = 4.4 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 6.24 % Relative Standard Deviation = 2.9 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 2.09 % Relative Standard Deviation = 5.8 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 13.08 % Relative Standard Deviation = 4.5 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 8.59 % Relative Standard Deviation = 3.8 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 13.33 % Relative Standard Deviation = 2.6 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 20.30 % Relative Standard Deviation = 3.4 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 14.80 % Relative Standard Deviation = 2.8 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 7.23 % Relative Standard Deviation = 6.9 Number of Observations = 31 Blind Sample ID = 50125-50123 Mean = 2.25 % Relative Standard Deviation = 4.0 Number of Observations = 13 Blind Sample ID = 25179-75177 Mean = 6.38 % Relative Standard Deviation = 5.3 Number of Observations = 16 Blind Sample ID = 25177-75175 Mean = 6.75 % Relative Standard Deviation = 6.8 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 5.70 % Relative Standard Deviation = 3.9 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 3.28 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 3.01 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 12.94 % Relative Standard Deviation = 3.7 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 11.18 % Relative Standard Deviation = 3.0 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 6.88 % Relative Standard Deviation = 3.9 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 20.35 % Relative Standard Deviation = 4.8 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 2.69 % Relative Standard Deviation = 3.7 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 10.80 % Relative Standard Deviation = 4.2 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 10.06 % Relative Standard Deviation = 4.4 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Cobalt, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01035, MCode: PLA11
Dates: 10/02/91 through 08/25/05
Open Data Set

Mean = 3.71 % Relative Standard Deviation = 24.8 Number of Observations = 17 Blind Sample ID = 67DW-33113 Mean = 3.90 % Relative Standard Deviation = 2.9 Number of Observations = 4 Blind Sample ID = 50175-50DIW Mean = 4.58 % Relative Standard Deviation = 1.6 Number of Observations = 4 Blind Sample ID = 50175-50173 Mean = 2.79 % Relative Standard Deviation = 32.1 Number of Observations = 4 Blind Sample ID = 50171-50DIW Mean = 12.40 % Relative Standard Deviation = 16.5 Number of Observations = 13 Blind Sample ID = 50155-50DIW Mean = 9.02 % Relative Standard Deviation = 40.2 Number of Observations = 13 Blind Sample ID = 50143-50151 Mean = 14.64 % Relative Standard Deviation = 16.3 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 9.49 % Relative Standard Deviation = 38.5 Number of Observations = 6 Blind Sample ID = 50139-50145 Mean = 4.01 % Relative Standard Deviation = 27.7 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 20.19 % Relative Standard Deviation = 6.9 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 16.67 % Relative Standard Deviation = 12.3 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 25.44 % Relative Standard Deviation = 8.3 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 4.75 % Relative Standard Deviation = 32.4 Number of Observations = 24 Blind Sample ID = 50123-50121 Mean = 6.63 % Relative Standard Deviation = 17.1 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 11.39 % Relative Standard Deviation = 12.5 Number of Observations = 44 Blind Sample ID = 50121-50105 Mean = 8.98 % Relative Standard Deviation = 12.2 Number of Observations = 47 Blind Sample ID = 50115-50103 Mean = 11.15 % Relative Standard Deviation = 11.6 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 6.28 % Relative Standard Deviation = 18.3 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 5.57 % Relative Standard Deviation = 27.0 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 31.47 % Relative Standard Deviation = 8.3 Number of Observations = 17 Blind Sample ID = 25DIW-75135 Mean = 18.44 % Relative Standard Deviation = 9.5 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 7.16 % Relative Standard Deviation = 3.7 Number of Observations = 8 Blind Sample ID = 25171-75175 Mean = 13.03 % Relative Standard Deviation = 10.4 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 12.49 % Relative Standard Deviation = 13.0 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 9.45 % Relative Standard Deviation = 29.0 Number of Observations = 7 Blind Sample ID = 25155-75153 Mean = 7.96 % Relative Standard Deviation = 10.3 Number of Observations = 7 Blind Sample ID = 25155-75147 Mean = 7.98 % Relative Standard Deviation = 25.2 Number of Observations = 22 Blind Sample ID = 25147-75145 Mean = 6.08 % Relative Standard Deviation = 26.9 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 14.44 % Relative Standard Deviation = 18.1 Number of Observations = 16 Blind Sample ID = 25133-75127 Mean = 11.05 % Relative Standard Deviation = 14.8 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 10.68 % Relative Standard Deviation = 13.5 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 11.09 % Relative Standard Deviation = 13.6 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 10.00 % Relative Standard Deviation = 22.7 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 9.33 % Relative Standard Deviation = 11.5 Number of Observations = 40 Blind Sample ID = 25117-75113 Mean = 10.82 % Relative Standard Deviation = 15.0 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 15.20 % Relative Standard Deviation = 38.8 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Cobalt, FIL, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01035, MCode: PLM10
Dates: 11/15/05 through 09/19/06
Open Data Set

Mean = 0.77 % Relative Standard Deviation = 8.1 Number of Observations = 4 Blind Sample ID = 75179-25DIW Mean = 5.43 % Relative Standard Deviation = 6.8 Number of Observations = 3 Blind Sample ID = 75175-25DIW Mean = 1.78 % Relative Standard Deviation = 2.4 Number of Observations = 5 Blind Sample ID = 50177-50179 Mean = 3.60 % Relative Standard Deviation = 4.1 Number of Observations = 6 Blind Sample ID = 50175-50DIW Mean = 0.61 % Relative Standard Deviation = 13.4 Number of Observations = 4 Blind Sample ID = 50173-50DIW Mean = 2.11 % Relative Standard Deviation = 3.2 Number of Observations = 7 Blind Sample ID = 25179-75177 Mean = 5.84 % Relative Standard Deviation = 3.5 Number of Observations = 5 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Cobalt, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01037, MCode: GF098
Dates: 10/10/91 through 10/01/02
Open Data Set

Mean = 6.85 % Relative Standard Deviation = 9.7 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 5.00 % Relative Standard Deviation = 12.1 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 2.50 % Relative Standard Deviation = 20.9 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 5.22 % Relative Standard Deviation = 12.8 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 5.21 % Relative Standard Deviation = 7.8 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 6.14 % Relative Standard Deviation = 13.1 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 6.61 % Relative Standard Deviation = 5.4 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 1.72 % Relative Standard Deviation = 18.7 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 12.42 % Relative Standard Deviation = 7.5 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 13.89 % Relative Standard Deviation = 3.4 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 8.63 % Relative Standard Deviation = 8.1 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 3.77 % Relative Standard Deviation = 8.9 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 20.23 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 15.31 % Relative Standard Deviation = 3.1 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 7.82 % Relative Standard Deviation = 6.1 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 4.50 % Relative Standard Deviation = 11.7 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 12.55 % Relative Standard Deviation = 8.3 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 7.88 % Relative Standard Deviation = 7.8 Number of Observations = 24 Blind Sample ID = 25DW-75113 Mean = 14.64 % Relative Standard Deviation = 6.3 Number of Observations = 14 Blind Sample ID = 25DW-75105 Mean = 8.75 % Relative Standard Deviation = 6.6 Number of Observations = 16 Blind Sample ID = 25DIW-75127 Mean = 13.64 % Relative Standard Deviation = 4.6 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 11.07 % Relative Standard Deviation = 3.0 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 6.85 % Relative Standard Deviation = 3.5 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 7.67 % Relative Standard Deviation = 7.1 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 6.91 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 2.18 % Relative Standard Deviation = 22.2 Number of Observations = 8 Blind Sample ID = 25139-75137
The SGPlot Procedure


- Cobalt, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01037, MCode: PLM48
Dates: 02/01/06 through 09/19/06
Open Data Set

Mean = 0.85 % Relative Standard Deviation = 4.9 Number of Observations = 6 Blind Sample ID = 75179-25DIW Mean = 5.30 % Relative Standard Deviation = 6.3 Number of Observations = 7 Blind Sample ID = 75175-25DIW Mean = 1.87 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 50177-50179 Mean = 3.70 % Relative Standard Deviation = 3.3 Number of Observations = 6 Blind Sample ID = 50175-50DIW Mean = 2.15 % Relative Standard Deviation = 3.6 Number of Observations = 8 Blind Sample ID = 25179-75177 Mean = 6.12 % Relative Standard Deviation = 7.9 Number of Observations = 8 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Copper, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01040, MCode: GF088
Dates: 10/03/91 through 10/19/04
Open Data Set

Mean = 9.83 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 75DIW-25155 Mean = 8.56 % Relative Standard Deviation = 4.9 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 3.30 % Relative Standard Deviation = 16.0 Number of Observations = 22 Blind Sample ID = 75DIW-25139 Mean = 11.25 % Relative Standard Deviation = 6.3 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 15.44 % Relative Standard Deviation = 4.7 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 5.25 % Relative Standard Deviation = 8.4 Number of Observations = 32 Blind Sample ID = 50DW-50123 Mean = 2.66 % Relative Standard Deviation = 18.2 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 8.71 % Relative Standard Deviation = 6.8 Number of Observations = 31 Blind Sample ID = 50DW-50115 Mean = 5.89 % Relative Standard Deviation = 5.6 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 11.91 % Relative Standard Deviation = 5.7 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 6.62 % Relative Standard Deviation = 3.4 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 1.04 % Relative Standard Deviation = 5.3 Number of Observations = 5 Blind Sample ID = 50DIW-50137 Mean = 31.03 % Relative Standard Deviation = 6.6 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 44.00 % Relative Standard Deviation = 4.2 Number of Observations = 24 Blind Sample ID = 50DIW-50133 Mean = 5.42 % Relative Standard Deviation = 10.8 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 0.82 % Relative Standard Deviation = 29.2 Number of Observations = 10 Blind Sample ID = 50171-50DIW Mean = 10.89 % Relative Standard Deviation = 7.6 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 11.69 % Relative Standard Deviation = 11.5 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 17.87 % Relative Standard Deviation = 5.5 Number of Observations = 8 Blind Sample ID = 50163-50DIW Mean = 11.38 % Relative Standard Deviation = 7.1 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 12.60 % Relative Standard Deviation = 3.7 Number of Observations = 8 Blind Sample ID = 50157-50DIW Mean = 15.54 % Relative Standard Deviation = 4.1 Number of Observations = 26 Blind Sample ID = 50139-50141 Mean = 8.44 % Relative Standard Deviation = 8.4 Number of Observations = 8 Blind Sample ID = 50137-50139 Mean = 38.46 % Relative Standard Deviation = 4.5 Number of Observations = 23 Blind Sample ID = 50135-50139 Mean = 7.63 % Relative Standard Deviation = 6.8 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 12.00 % Relative Standard Deviation = 5.3 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 50.00 % Relative Standard Deviation = 4.8 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 8.00 % Relative Standard Deviation = 6.7 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 3.87 % Relative Standard Deviation = 12.9 Number of Observations = 46 Blind Sample ID = 33DW-67121 Mean = 10.65 % Relative Standard Deviation = 11.0 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 12.80 % Relative Standard Deviation = 7.5 Number of Observations = 30 Blind Sample ID = 33DW-67105 Mean = 56.77 % Relative Standard Deviation = 4.9 Number of Observations = 30 Blind Sample ID = 33DW-67103 Mean = 42.17 % Relative Standard Deviation = 5.2 Number of Observations = 29 Blind Sample ID = 33DIW-67135 Mean = 13.39 % Relative Standard Deviation = 6.3 Number of Observations = 36 Blind Sample ID = 33DIW-67131 Mean = 28.27 % Relative Standard Deviation = 5.1 Number of Observations = 45 Blind Sample ID = 33DIW-67127 Mean = 5.06 % Relative Standard Deviation = 6.9 Number of Observations = 33 Blind Sample ID = 25DW-75121 Mean = 15.19 % Relative Standard Deviation = 6.7 Number of Observations = 31 Blind Sample ID = 25DW-75105 Mean = 63.19 % Relative Standard Deviation = 5.0 Number of Observations = 32 Blind Sample ID = 25DW-75103 Mean = 28.41 % Relative Standard Deviation = 9.4 Number of Observations = 7 Blind Sample ID = 25DIW-75163 Mean = 25.41 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = 25DIW-75159 Mean = 18.86 % Relative Standard Deviation = 8.2 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 9.10 % Relative Standard Deviation = 3.8 Number of Observations = 16 Blind Sample ID = 25DIW-75147 Mean = 17.63 % Relative Standard Deviation = 5.8 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 48.16 % Relative Standard Deviation = 5.1 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 15.00 % Relative Standard Deviation = 2.8 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 19.22 % Relative Standard Deviation = 3.5 Number of Observations = 14 Blind Sample ID = 25169-75167 Mean = 37.46 % Relative Standard Deviation = 5.2 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 31.71 % Relative Standard Deviation = 4.0 Number of Observations = 8 Blind Sample ID = 25157-75159 Mean = 29.27 % Relative Standard Deviation = 5.8 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 19.30 % Relative Standard Deviation = 6.7 Number of Observations = 8 Blind Sample ID = 25155-75147 Mean = 36.63 % Relative Standard Deviation = 5.3 Number of Observations = 7 Blind Sample ID = 25151-75155 Mean = 11.90 % Relative Standard Deviation = 4.9 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 12.12 % Relative Standard Deviation = 4.3 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 4.88 % Relative Standard Deviation = 11.8 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 51.57 % Relative Standard Deviation = 9.2 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 35.50 % Relative Standard Deviation = 3.3 Number of Observations = 12 Blind Sample ID = 25123-75127 Mean = 18.67 % Relative Standard Deviation = 34.0 Number of Observations = 3 Blind Sample ID =
The SGPlot Procedure


- Copper, FIL, GFAA, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01040, MCode: GF077
Dates: 10/08/91 through 09/27/94
Open Data Set

Mean = 2.18 % Relative Standard Deviation = 28.3 Number of Observations = 8 Blind Sample ID = 75DW-25117 Mean = 23.17 % Relative Standard Deviation = 13.2 Number of Observations = 6 Blind Sample ID = 75DW-25103 Mean = 17.13 % Relative Standard Deviation = 21.9 Number of Observations = 8 Blind Sample ID = 67DW-33113 Mean = 3.54 % Relative Standard Deviation = 10.0 Number of Observations = 8 Blind Sample ID = 50DW-50117 Mean = 44.00 % Relative Standard Deviation = 18.2 Number of Observations = 8 Blind Sample ID = 50DW-50103 Mean = 4.23 % Relative Standard Deviation = 7.4 Number of Observations = 7 Blind Sample ID = 33DW-67121 Mean = 5.33 % Relative Standard Deviation = 5.4 Number of Observations = 11 Blind Sample ID = 25DW-75121 Mean = 63.50 % Relative Standard Deviation = 12.3 Number of Observations = 8 Blind Sample ID = 25DW-75103
The SGPlot Procedure


- Copper, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01040, MCode: PLM43
Dates: 02/07/94 through 07/19/06
Open Data Set

Mean = 4.24 % Relative Standard Deviation = 6.0 Number of Observations = 34 Blind Sample ID = GT3 Mean = 9.59 % Relative Standard Deviation = 1.9 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 3.42 % Relative Standard Deviation = 12.8 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 4.50 % Relative Standard Deviation = 11.5 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 2.98 % Relative Standard Deviation = 7.3 Number of Observations = 17 Blind Sample ID = 75179-25DIW Mean = 1.70 % Relative Standard Deviation = 33.1 Number of Observations = 12 Blind Sample ID = 75175-25DIW Mean = 11.18 % Relative Standard Deviation = 2.8 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 5.79 % Relative Standard Deviation = 2.3 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 11.43 % Relative Standard Deviation = 2.8 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 31.45 % Relative Standard Deviation = 3.5 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 6.05 % Relative Standard Deviation = 8.6 Number of Observations = 10 Blind Sample ID = 50177-50179 Mean = 1.02 % Relative Standard Deviation = 21.9 Number of Observations = 36 Blind Sample ID = 50175-50DIW Mean = 4.90 % Relative Standard Deviation = 4.4 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 3.98 % Relative Standard Deviation = 4.1 Number of Observations = 23 Blind Sample ID = 50173-50DIW Mean = 0.53 % Relative Standard Deviation = 14.7 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 4.55 % Relative Standard Deviation = 7.0 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 10.63 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 11.00 % Relative Standard Deviation = 2.9 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 17.60 % Relative Standard Deviation = 5.2 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 11.01 % Relative Standard Deviation = 2.8 Number of Observations = 23 Blind Sample ID = 50161-50DIW Mean = 12.72 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 18.44 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 27.45 % Relative Standard Deviation = 2.1 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 16.49 % Relative Standard Deviation = 3.1 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 32.46 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 51.27 % Relative Standard Deviation = 2.5 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 13.58 % Relative Standard Deviation = 5.6 Number of Observations = 31 Blind Sample ID = 50125-50123 Mean = 7.05 % Relative Standard Deviation = 3.5 Number of Observations = 13 Blind Sample ID = 25179-75177 Mean = 3.60 % Relative Standard Deviation = 6.1 Number of Observations = 18 Blind Sample ID = 25177-75175 Mean = 1.71 % Relative Standard Deviation = 5.1 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 19.33 % Relative Standard Deviation = 3.7 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 16.45 % Relative Standard Deviation = 2.8 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 0.61 % Relative Standard Deviation = 39.6 Number of Observations = 23 Blind Sample ID = 25165-75DIW Mean = 30.10 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 31.08 % Relative Standard Deviation = 2.5 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 27.12 % Relative Standard Deviation = 2.9 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 36.10 % Relative Standard Deviation = 2.2 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 11.68 % Relative Standard Deviation = 2.0 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 35.20 % Relative Standard Deviation = 3.0 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 36.50 % Relative Standard Deviation = 4.9 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Copper, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01040, MCode: PLA11
Dates: 10/02/91 through 09/29/05
Open Data Set

Mean = 10.49 % Relative Standard Deviation = 15.4 Number of Observations = 4 Blind Sample ID = 75169-25DIW Mean = 18.24 % Relative Standard Deviation = 21.5 Number of Observations = 17 Blind Sample ID = 67DW-33113 Mean = 1.26 % Relative Standard Deviation = 11.1 Number of Observations = 4 Blind Sample ID = 50175-50DIW Mean = 5.00 % Relative Standard Deviation = 8.9 Number of Observations = 4 Blind Sample ID = 50175-50173 Mean = 3.33 % Relative Standard Deviation = 14.9 Number of Observations = 4 Blind Sample ID = 50173-50DIW Mean = 1.20 % Relative Standard Deviation = 14.3 Number of Observations = 3 Blind Sample ID = 50171-50DIW Mean = 9.39 % Relative Standard Deviation = 15.5 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 10.94 % Relative Standard Deviation = 6.0 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 6.45 % Relative Standard Deviation = 36.2 Number of Observations = 4 Blind Sample ID = 50165-50169 Mean = 12.12 % Relative Standard Deviation = 9.4 Number of Observations = 4 Blind Sample ID = 50165-50167 Mean = 18.17 % Relative Standard Deviation = 3.6 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 10.41 % Relative Standard Deviation = 6.8 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 12.71 % Relative Standard Deviation = 4.4 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 18.88 % Relative Standard Deviation = 7.8 Number of Observations = 13 Blind Sample ID = 50155-50DIW Mean = 27.66 % Relative Standard Deviation = 7.2 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 16.75 % Relative Standard Deviation = 9.5 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 12.56 % Relative Standard Deviation = 13.9 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 10.23 % Relative Standard Deviation = 4.6 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 31.23 % Relative Standard Deviation = 10.6 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 20.00 % Relative Standard Deviation = 0.0 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 40.00 % Relative Standard Deviation = 0.0 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 24 Blind Sample ID = 50123-50121 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 10.23 % Relative Standard Deviation = 14.7 Number of Observations = 44 Blind Sample ID = 50121-50105 Mean = 50.21 % Relative Standard Deviation = 2.9 Number of Observations = 47 Blind Sample ID = 50115-50103 Mean = 10.63 % Relative Standard Deviation = 23.0 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 68.26 % Relative Standard Deviation = 5.6 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 25.48 % Relative Standard Deviation = 6.6 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 47.06 % Relative Standard Deviation = 10.0 Number of Observations = 17 Blind Sample ID = 25DIW-75135 Mean = 17.78 % Relative Standard Deviation = 24.1 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 2.17 % Relative Standard Deviation = 44.3 Number of Observations = 11 Blind Sample ID = 25171-75175 Mean = 19.67 % Relative Standard Deviation = 5.6 Number of Observations = 4 Blind Sample ID = 25169-75167 Mean = 29.94 % Relative Standard Deviation = 2.2 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 32.33 % Relative Standard Deviation = 3.4 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 27.65 % Relative Standard Deviation = 9.3 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 18.24 % Relative Standard Deviation = 5.9 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 11.25 % Relative Standard Deviation = 12.2 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 13.22 % Relative Standard Deviation = 28.1 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 54.38 % Relative Standard Deviation = 9.4 Number of Observations = 16 Blind Sample ID = 25133-75127 Mean = 24.05 % Relative Standard Deviation = 20.7 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 36.59 % Relative Standard Deviation = 13.1 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 40.00 % Relative Standard Deviation = 0.0 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 33.75 % Relative Standard Deviation = 14.7 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 37.50 % Relative Standard Deviation = 11.7 Number of Observations = 40 Blind Sample ID = 25117-75113 Mean = 49.74 % Relative Standard Deviation = 3.2 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 14.00 % Relative Standard Deviation = 39.1 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Copper, FIL, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01040, MCode: PLM10
Dates: 11/22/05 through 09/15/06
Open Data Set

Mean = 1.38 % Relative Standard Deviation = 8.7 Number of Observations = 3 Blind Sample ID = 75175-25DIW Mean = 5.64 % Relative Standard Deviation = 2.0 Number of Observations = 4 Blind Sample ID = 50177-50179 Mean = 1.36 % Relative Standard Deviation = 53.2 Number of Observations = 3 Blind Sample ID = 50175-50DIW Mean = 3.80 % Relative Standard Deviation = 12.7 Number of Observations = 3 Blind Sample ID = 50173-50DIW Mean = 6.52 % Relative Standard Deviation = 2.6 Number of Observations = 7 Blind Sample ID = 25179-75177 Mean = 3.24 % Relative Standard Deviation = 3.1 Number of Observations = 3 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Copper, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01042, MCode: GF099
Dates: 10/03/91 through 06/17/05
Open Data Set

Mean = 9.55 % Relative Standard Deviation = 2.6 Number of Observations = 10 Blind Sample ID = 75DIW-25155 Mean = 8.45 % Relative Standard Deviation = 5.1 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 10.65 % Relative Standard Deviation = 8.4 Number of Observations = 7 Blind Sample ID = 75169-25DIW Mean = 14.77 % Relative Standard Deviation = 14.0 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 8.75 % Relative Standard Deviation = 11.0 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 2.92 % Relative Standard Deviation = 22.9 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 19.50 % Relative Standard Deviation = 14.0 Number of Observations = 6 Blind Sample ID = 50DW-50101 Mean = 5.86 % Relative Standard Deviation = 8.3 Number of Observations = 11 Blind Sample ID = 50DIW-50145 Mean = 11.29 % Relative Standard Deviation = 2.9 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 6.50 % Relative Standard Deviation = 18.8 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 1.17 % Relative Standard Deviation = 16.1 Number of Observations = 7 Blind Sample ID = 50DIW-50137 Mean = 31.14 % Relative Standard Deviation = 2.9 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 1.61 % Relative Standard Deviation = 58.6 Number of Observations = 8 Blind Sample ID = 50175-50DIW Mean = 5.78 % Relative Standard Deviation = 13.2 Number of Observations = 4 Blind Sample ID = 50175-50173 Mean = 5.07 % Relative Standard Deviation = 3.8 Number of Observations = 3 Blind Sample ID = 50173-50DIW Mean = 1.11 % Relative Standard Deviation = 28.6 Number of Observations = 25 Blind Sample ID = 50171-50DIW Mean = 4.09 % Relative Standard Deviation = 38.0 Number of Observations = 3 Blind Sample ID = 50171-50173 Mean = 10.37 % Relative Standard Deviation = 4.9 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 11.78 % Relative Standard Deviation = 6.9 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 17.70 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 50163-50DIW Mean = 11.20 % Relative Standard Deviation = 9.9 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 12.78 % Relative Standard Deviation = 4.8 Number of Observations = 8 Blind Sample ID = 50157-50DIW Mean = 16.68 % Relative Standard Deviation = 3.8 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 11.98 % Relative Standard Deviation = 1.5 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 14.87 % Relative Standard Deviation = 12.8 Number of Observations = 18 Blind Sample ID = 50139-50141 Mean = 9.44 % Relative Standard Deviation = 6.2 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 37.90 % Relative Standard Deviation = 7.4 Number of Observations = 16 Blind Sample ID = 50135-50139 Mean = 31.89 % Relative Standard Deviation = 4.6 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 51.92 % Relative Standard Deviation = 6.6 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 13.18 % Relative Standard Deviation = 11.5 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 5.86 % Relative Standard Deviation = 30.3 Number of Observations = 7 Blind Sample ID = 50123-50121 Mean = 11.88 % Relative Standard Deviation = 9.2 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 3.30 % Relative Standard Deviation = 28.7 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 50.08 % Relative Standard Deviation = 4.5 Number of Observations = 12 Blind Sample ID = 50115-50103 Mean = 33.36 % Relative Standard Deviation = 10.8 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 7.25 % Relative Standard Deviation = 17.5 Number of Observations = 28 Blind Sample ID = 33DW-67123 Mean = 2.93 % Relative Standard Deviation = 16.2 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 11.07 % Relative Standard Deviation = 31.2 Number of Observations = 15 Blind Sample ID = 33DW-67115 Mean = 43.75 % Relative Standard Deviation = 10.1 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 13.17 % Relative Standard Deviation = 5.5 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 70.42 % Relative Standard Deviation = 10.4 Number of Observations = 19 Blind Sample ID = 33127-67133 Mean = 18.53 % Relative Standard Deviation = 15.5 Number of Observations = 15 Blind Sample ID = 33127-67123 Mean = 34.19 % Relative Standard Deviation = 11.0 Number of Observations = 43 Blind Sample ID = 25DW-75113 Mean = 14.45 % Relative Standard Deviation = 7.2 Number of Observations = 11 Blind Sample ID = 25DW-75105 Mean = 26.79 % Relative Standard Deviation = 7.5 Number of Observations = 4 Blind Sample ID = 25DIW-75163 Mean = 24.62 % Relative Standard Deviation = 3.4 Number of Observations = 16 Blind Sample ID = 25DIW-75159 Mean = 17.97 % Relative Standard Deviation = 2.5 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 9.05 % Relative Standard Deviation = 6.7 Number of Observations = 18 Blind Sample ID = 25DIW-75147 Mean = 17.33 % Relative Standard Deviation = 4.8 Number of Observations = 15 Blind Sample ID = 25DIW-75143 Mean = 47.32 % Relative Standard Deviation = 5.6 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 14.67 % Relative Standard Deviation = 17.5 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 31.87 % Relative Standard Deviation = 4.7 Number of Observations = 54 Blind Sample ID = 25DIW-75127 Mean = 2.37 % Relative Standard Deviation = 20.3 Number of Observations = 15 Blind Sample ID = 25171-75175 Mean = 20.72 % Relative Standard Deviation = 7.2 Number of Observations = 16 Blind Sample ID = 25169-75167 Mean = 0.88 % Relative Standard Deviation = 22.7 Number of Observations = 3 Blind Sample ID = 25165-75DIW Mean = 31.83 % Relative Standard Deviation = 4.5 Number of Observations = 3 Blind Sample ID = 25161-75159 Mean = 36.20 % Relative Standard Deviation = 6.1 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 31.70 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 25157-75159 Mean = 27.78 % Relative Standard Deviation = 2.3 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 18.38 % Relative Standard Deviation = 2.0 Number of Observations = 7 Blind Sample ID = 25155-75147 Mean = 35.25 % Relative Standard Deviation = 7.9 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 11.65 % Relative Standard Deviation = 1.9 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 11.84 % Relative Standard Deviation = 6.3 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 13.74 % Relative Standard Deviation = 7.2 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 4.29 % Relative Standard Deviation = 27.0 Number of Observations = 14 Blind Sample ID = 25139-75137 Mean = 45.40 % Relative Standard Deviation = 4.8 Number of Observations = 14 Blind Sample ID = 25137-75135 Mean = 52.71 % Relative Standard Deviation = 4.5 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 35.05 % Relative Standard Deviation = 9.5 Number of Observations = 39 Blind Sample ID = 25125-75127 Mean = 38.20 % Relative Standard Deviation = 11.7 Number of Observations = 20 Blind Sample ID = 25125-75113 Mean = 33.92 % Relative Standard Deviation = 6.8 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Copper, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01042, MCode: PLM48
Dates: 10/16/01 through 09/19/06
Open Data Set

Mean = 3.02 % Relative Standard Deviation = 6.5 Number of Observations = 19 Blind Sample ID = 75179-25DIW Mean = 1.58 % Relative Standard Deviation = 11.1 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 0.90 % Relative Standard Deviation = 38.9 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 11.11 % Relative Standard Deviation = 3.1 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 6.07 % Relative Standard Deviation = 3.5 Number of Observations = 18 Blind Sample ID = 50177-50179 Mean = 1.15 % Relative Standard Deviation = 24.8 Number of Observations = 21 Blind Sample ID = 50175-50DIW Mean = 5.20 % Relative Standard Deviation = 10.1 Number of Observations = 19 Blind Sample ID = 50175-50173 Mean = 4.38 % Relative Standard Deviation = 12.8 Number of Observations = 21 Blind Sample ID = 50173-50DIW Mean = 0.61 % Relative Standard Deviation = 47.3 Number of Observations = 11 Blind Sample ID = 50171-50DIW Mean = 5.10 % Relative Standard Deviation = 10.8 Number of Observations = 16 Blind Sample ID = 50171-50173 Mean = 10.75 % Relative Standard Deviation = 6.1 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 8.51 % Relative Standard Deviation = 2.7 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 11.52 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 25.86 % Relative Standard Deviation = 2.8 Number of Observations = 6 Blind Sample ID = 25DIW-75163 Mean = 7.08 % Relative Standard Deviation = 5.9 Number of Observations = 20 Blind Sample ID = 25179-75177 Mean = 3.67 % Relative Standard Deviation = 15.2 Number of Observations = 23 Blind Sample ID = 25177-75175 Mean = 2.04 % Relative Standard Deviation = 21.0 Number of Observations = 19 Blind Sample ID = 25171-75175 Mean = 31.94 % Relative Standard Deviation = 2.1 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 23.86 % Relative Standard Deviation = 0.9 Number of Observations = 6 Blind Sample ID = 25159-75161
The SGPlot Procedure


- Copper, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01042, MCode: PLA15
Dates: 04/12/99 through 09/26/02
Open Data Set

Mean = 16.61 % Relative Standard Deviation = 12.1 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 23.02 % Relative Standard Deviation = 39.7 Number of Observations = 4 Blind Sample ID = 25DIW-75163 Mean = 11.64 % Relative Standard Deviation = 11.0 Number of Observations = 3 Blind Sample ID = 25DIW-75147 Mean = 30.16 % Relative Standard Deviation = 13.6 Number of Observations = 4 Blind Sample ID = 25163-75159 Mean = 22.94 % Relative Standard Deviation = 22.0 Number of Observations = 4 Blind Sample ID = 25159-75161 Mean = 33.32 % Relative Standard Deviation = 26.9 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 9.61 % Relative Standard Deviation = 6.2 Number of Observations = 3 Blind Sample ID = 25147-75145
The SGPlot Procedure


- Dimethylarsinate (DMA), IC-ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 62455, MCode: PLM35
Dates: 10/31/03 through 09/12/06
Open Data Set

Mean = 12.51 % Relative Standard Deviation = 3.6 Number of Observations = 46 Blind Sample ID = AS4 Mean = 25.36 % Relative Standard Deviation = 3.5 Number of Observations = 23 Blind Sample ID = AS1
The SGPlot Procedure


- Iron, FIL, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01046, MCode: AA018
Dates: 10/03/91 through 03/29/96
Open Data Set

Mean = 90.00 % Relative Standard Deviation = 5.2 Number of Observations = 10 Blind Sample ID = 67DW-33113 Mean = 29.06 % Relative Standard Deviation = 28.1 Number of Observations = 32 Blind Sample ID = 50DW-50123 Mean = 72.19 % Relative Standard Deviation = 7.7 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 578.71 % Relative Standard Deviation = 4.3 Number of Observations = 31 Blind Sample ID = 50DW-50115 Mean = 20.83 % Relative Standard Deviation = 43.2 Number of Observations = 12 Blind Sample ID = 50DIW-50133 Mean = 30.42 % Relative Standard Deviation = 20.5 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 99.09 % Relative Standard Deviation = 5.8 Number of Observations = 33 Blind Sample ID = 33DW-67121 Mean = 746.67 % Relative Standard Deviation = 4.3 Number of Observations = 3 Blind Sample ID = 33DW-67115 Mean = 12.67 % Relative Standard Deviation = 35.5 Number of Observations = 30 Blind Sample ID = 33DW-67105 Mean = 28.67 % Relative Standard Deviation = 17.7 Number of Observations = 30 Blind Sample ID = 33DW-67103 Mean = 153.85 % Relative Standard Deviation = 4.2 Number of Observations = 13 Blind Sample ID = 33DIW-67135 Mean = 66.76 % Relative Standard Deviation = 10.9 Number of Observations = 34 Blind Sample ID = 33DIW-67131 Mean = 96.11 % Relative Standard Deviation = 7.2 Number of Observations = 36 Blind Sample ID = 33DIW-67127 Mean = 111.56 % Relative Standard Deviation = 6.9 Number of Observations = 32 Blind Sample ID = 25DW-75121 Mean = 13.87 % Relative Standard Deviation = 35.7 Number of Observations = 31 Blind Sample ID = 25DW-75105 Mean = 28.75 % Relative Standard Deviation = 27.6 Number of Observations = 32 Blind Sample ID = 25DW-75103 Mean = 172.50 % Relative Standard Deviation = 5.6 Number of Observations = 4 Blind Sample ID = 25DIW-75135 Mean = 75.45 % Relative Standard Deviation = 9.1 Number of Observations = 11 Blind Sample ID = 25DIW-75131 Mean = 113.33 % Relative Standard Deviation = 5.1 Number of Observations = 3 Blind Sample ID = 25133-75127 Mean = 114.17 % Relative Standard Deviation = 8.7 Number of Observations = 12 Blind Sample ID = 25123-75127 Mean = 80.00 % Relative Standard Deviation = 12.5 Number of Observations = 3 Blind Sample ID =
The SGPlot Procedure


- Iron, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01046, MCode: PLA11
Dates: 10/04/91 through 09/29/06
Open Data Set

Mean = 22.12 % Relative Standard Deviation = 13.0 Number of Observations = 36 Blind Sample ID = 75DIW-25155 Mean = 9.48 % Relative Standard Deviation = 35.1 Number of Observations = 3 Blind Sample ID = 75DIW-25151 Mean = 3.84 % Relative Standard Deviation = 53.2 Number of Observations = 36 Blind Sample ID = 75DIW-25139 Mean = 18.84 % Relative Standard Deviation = 16.6 Number of Observations = 31 Blind Sample ID = 75DIW-25137 Mean = 92.11 % Relative Standard Deviation = 3.5 Number of Observations = 23 Blind Sample ID = 75179-25DIW Mean = 27.30 % Relative Standard Deviation = 10.1 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 36.82 % Relative Standard Deviation = 9.5 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 9.49 % Relative Standard Deviation = 31.2 Number of Observations = 35 Blind Sample ID = 75169-25DIW Mean = 90.93 % Relative Standard Deviation = 3.0 Number of Observations = 45 Blind Sample ID = 67DW-33113 Mean = 51.95 % Relative Standard Deviation = 4.0 Number of Observations = 22 Blind Sample ID = 50DIW-50145 Mean = 107.67 % Relative Standard Deviation = 2.1 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 3.51 % Relative Standard Deviation = 18.2 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 37.94 % Relative Standard Deviation = 10.4 Number of Observations = 16 Blind Sample ID = 50DIW-50137 Mean = 113.29 % Relative Standard Deviation = 3.1 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 18.73 % Relative Standard Deviation = 12.4 Number of Observations = 11 Blind Sample ID = 50DIW-50133 Mean = 62.48 % Relative Standard Deviation = 4.9 Number of Observations = 24 Blind Sample ID = 50177-50179 Mean = 19.36 % Relative Standard Deviation = 13.1 Number of Observations = 47 Blind Sample ID = 50175-50DIW Mean = 28.02 % Relative Standard Deviation = 7.6 Number of Observations = 23 Blind Sample ID = 50175-50173 Mean = 12.33 % Relative Standard Deviation = 13.3 Number of Observations = 23 Blind Sample ID = 50173-50DIW Mean = 25.24 % Relative Standard Deviation = 17.0 Number of Observations = 44 Blind Sample ID = 50171-50DIW Mean = 36.58 % Relative Standard Deviation = 4.1 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 28.06 % Relative Standard Deviation = 8.7 Number of Observations = 12 Blind Sample ID = 50167-50DIW Mean = 50.18 % Relative Standard Deviation = 6.9 Number of Observations = 36 Blind Sample ID = 50167-50171 Mean = 18.81 % Relative Standard Deviation = 11.9 Number of Observations = 64 Blind Sample ID = 50165-50169 Mean = 42.77 % Relative Standard Deviation = 5.8 Number of Observations = 64 Blind Sample ID = 50165-50167 Mean = 31.67 % Relative Standard Deviation = 9.7 Number of Observations = 12 Blind Sample ID = 50163-50DIW Mean = 28.81 % Relative Standard Deviation = 21.0 Number of Observations = 12 Blind Sample ID = 50161-50DIW Mean = 39.59 % Relative Standard Deviation = 7.6 Number of Observations = 20 Blind Sample ID = 50157-50DIW Mean = 41.01 % Relative Standard Deviation = 6.7 Number of Observations = 63 Blind Sample ID = 50155-50DIW Mean = 7.83 % Relative Standard Deviation = 29.2 Number of Observations = 16 Blind Sample ID = 50147-50151 Mean = 62.79 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = 50145-50147 Mean = 116.64 % Relative Standard Deviation = 3.3 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 157.66 % Relative Standard Deviation = 3.2 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 52.83 % Relative Standard Deviation = 4.7 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 4.00 % Relative Standard Deviation = 36.4 Number of Observations = 42 Blind Sample ID = 50139-50141 Mean = 143.49 % Relative Standard Deviation = 4.3 Number of Observations = 18 Blind Sample ID = 50137-50143 Mean = 36.05 % Relative Standard Deviation = 6.2 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 35.85 % Relative Standard Deviation = 7.4 Number of Observations = 24 Blind Sample ID = 50137-50139 Mean = 115.92 % Relative Standard Deviation = 4.3 Number of Observations = 41 Blind Sample ID = 50135-50139 Mean = 148.56 % Relative Standard Deviation = 3.2 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 94.77 % Relative Standard Deviation = 4.5 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 161.60 % Relative Standard Deviation = 3.4 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 97.60 % Relative Standard Deviation = 2.8 Number of Observations = 30 Blind Sample ID = 50123-50121 Mean = 110.67 % Relative Standard Deviation = 5.6 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 77.65 % Relative Standard Deviation = 4.3 Number of Observations = 60 Blind Sample ID = 50121-50105 Mean = 615.50 % Relative Standard Deviation = 2.1 Number of Observations = 60 Blind Sample ID = 50115-50103 Mean = 230.63 % Relative Standard Deviation = 3.0 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 115.43 % Relative Standard Deviation = 4.7 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 37.13 % Relative Standard Deviation = 8.6 Number of Observations = 24 Blind Sample ID = 33DW-67123 Mean = 92.54 % Relative Standard Deviation = 2.4 Number of Observations = 26 Blind Sample ID = 33DW-67121 Mean = 792.07 % Relative Standard Deviation = 2.9 Number of Observations = 29 Blind Sample ID = 33DW-67115 Mean = 150.63 % Relative Standard Deviation = 2.9 Number of Observations = 16 Blind Sample ID = 33DIW-67135 Mean = 92.33 % Relative Standard Deviation = 8.1 Number of Observations = 9 Blind Sample ID = 33DIW-67127 Mean = 67.38 % Relative Standard Deviation = 5.4 Number of Observations = 29 Blind Sample ID = 33127-67133 Mean = 81.29 % Relative Standard Deviation = 7.0 Number of Observations = 31 Blind Sample ID = 33127-67123 Mean = 106.09 % Relative Standard Deviation = 4.7 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 199.67 % Relative Standard Deviation = 3.6 Number of Observations = 30 Blind Sample ID = 25DW-75113 Mean = 15.56 % Relative Standard Deviation = 23.6 Number of Observations = 16 Blind Sample ID = 25DW-75105 Mean = 46.79 % Relative Standard Deviation = 4.3 Number of Observations = 16 Blind Sample ID = 25DIW-75163 Mean = 38.24 % Relative Standard Deviation = 7.7 Number of Observations = 15 Blind Sample ID = 25DIW-75159 Mean = 57.99 % Relative Standard Deviation = 6.1 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 7.45 % Relative Standard Deviation = 27.5 Number of Observations = 68 Blind Sample ID = 25DIW-75151 Mean = 8.20 % Relative Standard Deviation = 55.2 Number of Observations = 7 Blind Sample ID = 25DIW-75147 Mean = 170.09 % Relative Standard Deviation = 3.8 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 168.70 % Relative Standard Deviation = 3.3 Number of Observations = 29 Blind Sample ID = 25DIW-75135 Mean = 68.44 % Relative Standard Deviation = 4.0 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 100.38 % Relative Standard Deviation = 4.2 Number of Observations = 55 Blind Sample ID = 25DIW-75127 Mean = 38.49 % Relative Standard Deviation = 6.8 Number of Observations = 24 Blind Sample ID = 25179-75177 Mean = 28.31 % Relative Standard Deviation = 7.0 Number of Observations = 23 Blind Sample ID = 25177-75175 Mean = 35.15 % Relative Standard Deviation = 8.0 Number of Observations = 28 Blind Sample ID = 25171-75175 Mean = 44.81 % Relative Standard Deviation = 4.9 Number of Observations = 100 Blind Sample ID = 25169-75167 Mean = 23.38 % Relative Standard Deviation = 20.3 Number of Observations = 20 Blind Sample ID = 25167-75169 Mean = 7.41 % Relative Standard Deviation = 21.7 Number of Observations = 11 Blind Sample ID = 25165-75DIW Mean = 52.34 % Relative Standard Deviation = 4.4 Number of Observations = 70 Blind Sample ID = 25163-75159 Mean = 54.45 % Relative Standard Deviation = 4.5 Number of Observations = 60 Blind Sample ID = 25161-75159 Mean = 57.16 % Relative Standard Deviation = 4.0 Number of Observations = 64 Blind Sample ID = 25159-75161 Mean = 76.21 % Relative Standard Deviation = 6.1 Number of Observations = 59 Blind Sample ID = 25159-75155 Mean = 56.28 % Relative Standard Deviation = 8.2 Number of Observations = 20 Blind Sample ID = 25157-75159 Mean = 78.83 % Relative Standard Deviation = 6.1 Number of Observations = 58 Blind Sample ID = 25155-75157 Mean = 77.76 % Relative Standard Deviation = 3.6 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 27.39 % Relative Standard Deviation = 11.1 Number of Observations = 28 Blind Sample ID = 25155-75151 Mean = 29.81 % Relative Standard Deviation = 10.0 Number of Observations = 42 Blind Sample ID = 25155-75147 Mean = 68.83 % Relative Standard Deviation = 3.9 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 60.12 % Relative Standard Deviation = 4.2 Number of Observations = 22 Blind Sample ID = 25151-75153 Mean = 9.86 % Relative Standard Deviation = 16.7 Number of Observations = 26 Blind Sample ID = 25151-75147 Mean = 169.05 % Relative Standard Deviation = 2.2 Number of Observations = 22 Blind Sample ID = 25151-75143 Mean = 80.58 % Relative Standard Deviation = 2.9 Number of Observations = 55 Blind Sample ID = 25147-75145 Mean = 31.07 % Relative Standard Deviation = 11.0 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 5.22 % Relative Standard Deviation = 43.6 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 52.75 % Relative Standard Deviation = 6.8 Number of Observations = 37 Blind Sample ID = 25139-75137 Mean = 108.50 % Relative Standard Deviation = 3.4 Number of Observations = 20 Blind Sample ID = 25133-75127 Mean = 106.40 % Relative Standard Deviation = 4.6 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 122.57 % Relative Standard Deviation = 5.2 Number of Observations = 105 Blind Sample ID = 25125-75127 Mean = 220.81 % Relative Standard Deviation = 4.2 Number of Observations = 62 Blind Sample ID = 25125-75113 Mean = 108.75 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 320.55 % Relative Standard Deviation = 3.3 Number of Observations = 55 Blind Sample ID = 25117-75113 Mean = 252.73 % Relative Standard Deviation = 3.4 Number of Observations = 55 Blind Sample ID = 25101-75113 Mean = 63.40 % Relative Standard Deviation = 16.7 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Iron, FIL, ICP-OES, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01046, MCode: PLA09
Dates: 10/08/92 through 09/27/94
Open Data Set

Mean = 118.75 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 75DW-25117 Mean = 94.50 % Relative Standard Deviation = 12.3 Number of Observations = 8 Blind Sample ID = 67DW-33113 Mean = 238.75 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = 50DW-50117 Mean = 96.13 % Relative Standard Deviation = 3.7 Number of Observations = 8 Blind Sample ID = 33DW-67121 Mean = 111.25 % Relative Standard Deviation = 5.6 Number of Observations = 16 Blind Sample ID = 25DW-75121
The SGPlot Procedure


- Iron, UNF, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01045, MCode: AA054
Dates: 10/03/91 through 03/15/99
Open Data Set

Mean = 15.00 % Relative Standard Deviation = 13.3 Number of Observations = 3 Blind Sample ID = 75DIW-25151 Mean = 21.00 % Relative Standard Deviation = 23.2 Number of Observations = 10 Blind Sample ID = 75DIW-25137 Mean = 98.21 % Relative Standard Deviation = 15.6 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 57.50 % Relative Standard Deviation = 15.1 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 249.00 % Relative Standard Deviation = 10.8 Number of Observations = 10 Blind Sample ID = 50DW-50117 Mean = 107.50 % Relative Standard Deviation = 8.2 Number of Observations = 8 Blind Sample ID = 50DW-50101 Mean = 48.89 % Relative Standard Deviation = 5.2 Number of Observations = 9 Blind Sample ID = 50DIW-50145 Mean = 108.75 % Relative Standard Deviation = 5.1 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 40.06 % Relative Standard Deviation = 13.8 Number of Observations = 16 Blind Sample ID = 50DIW-50137 Mean = 115.63 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 154.29 % Relative Standard Deviation = 4.0 Number of Observations = 7 Blind Sample ID = 50143-50145 Mean = 54.63 % Relative Standard Deviation = 12.8 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 10.41 % Relative Standard Deviation = 12.3 Number of Observations = 17 Blind Sample ID = 50139-50141 Mean = 38.38 % Relative Standard Deviation = 14.9 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 114.31 % Relative Standard Deviation = 4.3 Number of Observations = 16 Blind Sample ID = 50135-50139 Mean = 146.14 % Relative Standard Deviation = 2.8 Number of Observations = 7 Blind Sample ID = 50135-50137 Mean = 65.38 % Relative Standard Deviation = 14.8 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 85.56 % Relative Standard Deviation = 11.8 Number of Observations = 27 Blind Sample ID = 50125-50123 Mean = 101.25 % Relative Standard Deviation = 6.3 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 87.50 % Relative Standard Deviation = 18.9 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 304.00 % Relative Standard Deviation = 2.3 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 576.88 % Relative Standard Deviation = 5.9 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 645.45 % Relative Standard Deviation = 7.1 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 44.44 % Relative Standard Deviation = 29.5 Number of Observations = 27 Blind Sample ID = 33DW-67123 Mean = 100.00 % Relative Standard Deviation = 21.1 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 780.00 % Relative Standard Deviation = 5.8 Number of Observations = 16 Blind Sample ID = 33DW-67115 Mean = 153.75 % Relative Standard Deviation = 6.9 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 64.44 % Relative Standard Deviation = 20.7 Number of Observations = 9 Blind Sample ID = 33DIW-67131 Mean = 67.89 % Relative Standard Deviation = 13.5 Number of Observations = 19 Blind Sample ID = 33127-67133 Mean = 96.00 % Relative Standard Deviation = 20.9 Number of Observations = 20 Blind Sample ID = 33127-67123 Mean = 213.72 % Relative Standard Deviation = 5.0 Number of Observations = 43 Blind Sample ID = 25DW-75113 Mean = 17.78 % Relative Standard Deviation = 67.6 Number of Observations = 9 Blind Sample ID = 25DW-75105 Mean = 162.75 % Relative Standard Deviation = 3.9 Number of Observations = 12 Blind Sample ID = 25DIW-75143 Mean = 168.88 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 81.82 % Relative Standard Deviation = 12.0 Number of Observations = 11 Blind Sample ID = 25DIW-75131 Mean = 104.07 % Relative Standard Deviation = 13.1 Number of Observations = 54 Blind Sample ID = 25DIW-75127 Mean = 73.00 % Relative Standard Deviation = 3.1 Number of Observations = 5 Blind Sample ID = 25147-75145 Mean = 24.75 % Relative Standard Deviation = 26.9 Number of Observations = 4 Blind Sample ID = 25145-75147 Mean = 10.63 % Relative Standard Deviation = 16.6 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 58.21 % Relative Standard Deviation = 11.6 Number of Observations = 14 Blind Sample ID = 25139-75137 Mean = 182.43 % Relative Standard Deviation = 3.8 Number of Observations = 14 Blind Sample ID = 25137-75135 Mean = 108.57 % Relative Standard Deviation = 9.8 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 129.19 % Relative Standard Deviation = 10.5 Number of Observations = 37 Blind Sample ID = 25125-75127 Mean = 242.11 % Relative Standard Deviation = 4.5 Number of Observations = 19 Blind Sample ID = 25125-75113 Mean = 124.17 % Relative Standard Deviation = 5.4 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Iron, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01045, MCode: PLA15
Dates: 04/05/99 through 09/08/06
Open Data Set

Mean = 20.88 % Relative Standard Deviation = 11.2 Number of Observations = 14 Blind Sample ID = 75DIW-25155 Mean = 97.08 % Relative Standard Deviation = 2.7 Number of Observations = 11 Blind Sample ID = 75179-25DIW Mean = 30.55 % Relative Standard Deviation = 5.9 Number of Observations = 16 Blind Sample ID = 75175-25DIW Mean = 42.49 % Relative Standard Deviation = 11.0 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 11.56 % Relative Standard Deviation = 27.4 Number of Observations = 6 Blind Sample ID = 75169-25DIW Mean = 52.97 % Relative Standard Deviation = 10.7 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 69.28 % Relative Standard Deviation = 3.6 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 19.45 % Relative Standard Deviation = 20.5 Number of Observations = 31 Blind Sample ID = 50175-50DIW Mean = 30.75 % Relative Standard Deviation = 6.2 Number of Observations = 16 Blind Sample ID = 50175-50173 Mean = 12.24 % Relative Standard Deviation = 12.6 Number of Observations = 15 Blind Sample ID = 50173-50DIW Mean = 27.09 % Relative Standard Deviation = 6.9 Number of Observations = 16 Blind Sample ID = 50171-50DIW Mean = 39.09 % Relative Standard Deviation = 4.1 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 27.22 % Relative Standard Deviation = 10.7 Number of Observations = 10 Blind Sample ID = 50167-50DIW Mean = 56.68 % Relative Standard Deviation = 3.7 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 16.28 % Relative Standard Deviation = 19.8 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 43.77 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 31.99 % Relative Standard Deviation = 18.8 Number of Observations = 12 Blind Sample ID = 50163-50DIW Mean = 30.02 % Relative Standard Deviation = 17.8 Number of Observations = 12 Blind Sample ID = 50161-50DIW Mean = 38.13 % Relative Standard Deviation = 7.7 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 43.57 % Relative Standard Deviation = 20.2 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 43.96 % Relative Standard Deviation = 7.6 Number of Observations = 16 Blind Sample ID = 25DIW-75163 Mean = 34.24 % Relative Standard Deviation = 16.6 Number of Observations = 15 Blind Sample ID = 25DIW-75159 Mean = 55.38 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 164.63 % Relative Standard Deviation = 2.0 Number of Observations = 3 Blind Sample ID = 25DIW-75143 Mean = 44.52 % Relative Standard Deviation = 13.9 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 33.28 % Relative Standard Deviation = 3.7 Number of Observations = 12 Blind Sample ID = 25177-75175 Mean = 41.68 % Relative Standard Deviation = 5.4 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 33.38 % Relative Standard Deviation = 47.6 Number of Observations = 3 Blind Sample ID = 25169-75167 Mean = 8.76 % Relative Standard Deviation = 12.2 Number of Observations = 5 Blind Sample ID = 25165-75DIW Mean = 42.89 % Relative Standard Deviation = 7.1 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 40.23 % Relative Standard Deviation = 9.7 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 49.71 % Relative Standard Deviation = 4.5 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 73.70 % Relative Standard Deviation = 4.8 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 47.52 % Relative Standard Deviation = 6.5 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 72.97 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 27.77 % Relative Standard Deviation = 6.7 Number of Observations = 9 Blind Sample ID = 25155-75147 Mean = 65.43 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 77.79 % Relative Standard Deviation = 5.0 Number of Observations = 6 Blind Sample ID = 25147-75145 Mean = 28.05 % Relative Standard Deviation = 18.8 Number of Observations = 4 Blind Sample ID = 25145-75147
The SGPlot Procedure


- Lead, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01049, MCode: GF089
Dates: 10/03/91 through 10/20/03
Open Data Set

Mean = 4.93 % Relative Standard Deviation = 4.0 Number of Observations = 8 Blind Sample ID = 75DIW-25155 Mean = 5.08 % Relative Standard Deviation = 6.8 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 1.20 % Relative Standard Deviation = 24.7 Number of Observations = 22 Blind Sample ID = 75DIW-25139 Mean = 1.60 % Relative Standard Deviation = 12.9 Number of Observations = 8 Blind Sample ID = 75DIW-25137 Mean = 8.86 % Relative Standard Deviation = 8.9 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 24 Blind Sample ID = 67DW-33113 Mean = 5.16 % Relative Standard Deviation = 10.0 Number of Observations = 32 Blind Sample ID = 50DW-50123 Mean = 3.94 % Relative Standard Deviation = 17.0 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 7.35 % Relative Standard Deviation = 19.7 Number of Observations = 31 Blind Sample ID = 50DW-50115 Mean = 6.93 % Relative Standard Deviation = 5.0 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 42.39 % Relative Standard Deviation = 2.0 Number of Observations = 7 Blind Sample ID = 50DIW-50143 Mean = 2.36 % Relative Standard Deviation = 9.8 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 2.87 % Relative Standard Deviation = 15.2 Number of Observations = 8 Blind Sample ID = 50DIW-50137 Mean = 52.94 % Relative Standard Deviation = 2.5 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 14.67 % Relative Standard Deviation = 4.8 Number of Observations = 24 Blind Sample ID = 50DIW-50133 Mean = 5.21 % Relative Standard Deviation = 9.8 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 10.67 % Relative Standard Deviation = 13.5 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 17.17 % Relative Standard Deviation = 7.0 Number of Observations = 7 Blind Sample ID = 50163-50DIW Mean = 8.85 % Relative Standard Deviation = 12.8 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 3.70 % Relative Standard Deviation = 12.6 Number of Observations = 8 Blind Sample ID = 50157-50DIW Mean = 5.14 % Relative Standard Deviation = 7.1 Number of Observations = 26 Blind Sample ID = 50139-50141 Mean = 5.21 % Relative Standard Deviation = 4.5 Number of Observations = 8 Blind Sample ID = 50137-50139 Mean = 55.24 % Relative Standard Deviation = 4.2 Number of Observations = 23 Blind Sample ID = 50135-50139 Mean = 9.00 % Relative Standard Deviation = 8.4 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 9.94 % Relative Standard Deviation = 5.8 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 11.88 % Relative Standard Deviation = 7.5 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 7.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 5.39 % Relative Standard Deviation = 10.0 Number of Observations = 46 Blind Sample ID = 33DW-67121 Mean = 9.65 % Relative Standard Deviation = 5.1 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 8.07 % Relative Standard Deviation = 9.7 Number of Observations = 30 Blind Sample ID = 33DW-67105 Mean = 6.57 % Relative Standard Deviation = 7.7 Number of Observations = 30 Blind Sample ID = 33DW-67103 Mean = 67.48 % Relative Standard Deviation = 8.5 Number of Observations = 29 Blind Sample ID = 33DIW-67135 Mean = 12.44 % Relative Standard Deviation = 5.2 Number of Observations = 36 Blind Sample ID = 33DIW-67131 Mean = 2.33 % Relative Standard Deviation = 20.4 Number of Observations = 45 Blind Sample ID = 33DIW-67127 Mean = 5.85 % Relative Standard Deviation = 7.6 Number of Observations = 33 Blind Sample ID = 25DW-75121 Mean = 9.55 % Relative Standard Deviation = 10.1 Number of Observations = 31 Blind Sample ID = 25DW-75105 Mean = 7.16 % Relative Standard Deviation = 5.2 Number of Observations = 32 Blind Sample ID = 25DW-75103 Mean = 25.95 % Relative Standard Deviation = 7.2 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 13.65 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 25DIW-75159 Mean = 36.39 % Relative Standard Deviation = 6.6 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 11.05 % Relative Standard Deviation = 3.3 Number of Observations = 16 Blind Sample ID = 25DIW-75147 Mean = 65.46 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 78.18 % Relative Standard Deviation = 7.7 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 14.17 % Relative Standard Deviation = 5.9 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 4.80 % Relative Standard Deviation = 16.3 Number of Observations = 8 Blind Sample ID = 25165-75DIW Mean = 20.13 % Relative Standard Deviation = 3.9 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 16.35 % Relative Standard Deviation = 10.3 Number of Observations = 8 Blind Sample ID = 25157-75159 Mean = 10.77 % Relative Standard Deviation = 4.9 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 15.95 % Relative Standard Deviation = 6.2 Number of Observations = 8 Blind Sample ID = 25155-75147 Mean = 19.92 % Relative Standard Deviation = 3.1 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 13.31 % Relative Standard Deviation = 1.8 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 13.84 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 5.59 % Relative Standard Deviation = 6.7 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 9.71 % Relative Standard Deviation = 5.0 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 4.92 % Relative Standard Deviation = 10.5 Number of Observations = 12 Blind Sample ID = 25123-75127 Mean = 12.67 % Relative Standard Deviation = 12.1 Number of Observations = 3 Blind Sample ID =
The SGPlot Procedure


- Lead, FIL, GFAA, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01049, MCode: GF078
Dates: 10/08/91 through 09/13/95
Open Data Set

Mean = 1.47 % Relative Standard Deviation = 36.0 Number of Observations = 8 Blind Sample ID = 75DW-25117 Mean = 3.21 % Relative Standard Deviation = 39.4 Number of Observations = 8 Blind Sample ID = 75DW-25103 Mean = 2.27 % Relative Standard Deviation = 7.4 Number of Observations = 11 Blind Sample ID = 75DIW-25125 Mean = 0.55 % Relative Standard Deviation = 19.4 Number of Observations = 8 Blind Sample ID = 67DW-33113 Mean = 2.65 % Relative Standard Deviation = 6.1 Number of Observations = 8 Blind Sample ID = 50DW-50117 Mean = 4.55 % Relative Standard Deviation = 38.7 Number of Observations = 8 Blind Sample ID = 50DW-50103 Mean = 5.50 % Relative Standard Deviation = 4.7 Number of Observations = 8 Blind Sample ID = 33DW-67121 Mean = 6.16 % Relative Standard Deviation = 2.9 Number of Observations = 16 Blind Sample ID = 25DW-75121 Mean = 6.08 % Relative Standard Deviation = 17.5 Number of Observations = 8 Blind Sample ID = 25DW-75103
The SGPlot Procedure


- Lead, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01049, MCode: PLM43
Dates: 02/07/94 through 09/19/06
Open Data Set

Mean = 31.65 % Relative Standard Deviation = 4.1 Number of Observations = 34 Blind Sample ID = GT3 Mean = 4.93 % Relative Standard Deviation = 5.5 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 1.09 % Relative Standard Deviation = 9.8 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 1.57 % Relative Standard Deviation = 3.3 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 2.06 % Relative Standard Deviation = 12.1 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 1.42 % Relative Standard Deviation = 4.2 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 2.46 % Relative Standard Deviation = 6.2 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 8.43 % Relative Standard Deviation = 3.9 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 6.45 % Relative Standard Deviation = 3.3 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 41.71 % Relative Standard Deviation = 2.5 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 50.85 % Relative Standard Deviation = 2.2 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 3.35 % Relative Standard Deviation = 10.9 Number of Observations = 21 Blind Sample ID = 50177-50179 Mean = 1.53 % Relative Standard Deviation = 5.4 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 3.93 % Relative Standard Deviation = 4.6 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 2.41 % Relative Standard Deviation = 4.6 Number of Observations = 28 Blind Sample ID = 50173-50DIW Mean = 0.52 % Relative Standard Deviation = 6.0 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 2.93 % Relative Standard Deviation = 5.6 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 10.68 % Relative Standard Deviation = 3.0 Number of Observations = 28 Blind Sample ID = 50167-50DIW Mean = 10.86 % Relative Standard Deviation = 4.4 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 16.10 % Relative Standard Deviation = 4.7 Number of Observations = 28 Blind Sample ID = 50163-50DIW Mean = 8.25 % Relative Standard Deviation = 3.6 Number of Observations = 28 Blind Sample ID = 50161-50DIW Mean = 3.74 % Relative Standard Deviation = 5.0 Number of Observations = 36 Blind Sample ID = 50157-50DIW Mean = 8.98 % Relative Standard Deviation = 4.7 Number of Observations = 37 Blind Sample ID = 50155-50DIW Mean = 50.64 % Relative Standard Deviation = 3.1 Number of Observations = 27 Blind Sample ID = 50143-50151 Mean = 47.74 % Relative Standard Deviation = 2.8 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 54.30 % Relative Standard Deviation = 2.8 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 17.93 % Relative Standard Deviation = 1.4 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 9.03 % Relative Standard Deviation = 18.5 Number of Observations = 32 Blind Sample ID = 50125-50123 Mean = 3.82 % Relative Standard Deviation = 8.3 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 3.52 % Relative Standard Deviation = 6.9 Number of Observations = 26 Blind Sample ID = 25177-75175 Mean = 2.56 % Relative Standard Deviation = 5.1 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 18.59 % Relative Standard Deviation = 3.1 Number of Observations = 76 Blind Sample ID = 25169-75167 Mean = 13.58 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 4.67 % Relative Standard Deviation = 4.6 Number of Observations = 28 Blind Sample ID = 25165-75DIW Mean = 16.56 % Relative Standard Deviation = 3.7 Number of Observations = 28 Blind Sample ID = 25161-75159 Mean = 14.75 % Relative Standard Deviation = 2.8 Number of Observations = 35 Blind Sample ID = 25157-75159 Mean = 39.40 % Relative Standard Deviation = 4.4 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 18.92 % Relative Standard Deviation = 4.8 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 13.40 % Relative Standard Deviation = 2.9 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 4.85 % Relative Standard Deviation = 15.7 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 2.44 % Relative Standard Deviation = 21.0 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Lead, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01049, MCode: PLA11
Dates: 10/02/91 through 08/03/00
Open Data Set

Mean = 10.59 % Relative Standard Deviation = 22.9 Number of Observations = 17 Blind Sample ID = 67DW-33113 Mean = 71.59 % Relative Standard Deviation = 21.2 Number of Observations = 10 Blind Sample ID = 50143-50151 Mean = 45.25 % Relative Standard Deviation = 23.2 Number of Observations = 5 Blind Sample ID = 50143-50145 Mean = 13.35 % Relative Standard Deviation = 41.0 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 56.28 % Relative Standard Deviation = 20.6 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 16.59 % Relative Standard Deviation = 59.5 Number of Observations = 44 Blind Sample ID = 50131-50125 Mean = 58.00 % Relative Standard Deviation = 18.6 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 10.42 % Relative Standard Deviation = 19.6 Number of Observations = 24 Blind Sample ID = 50123-50121 Mean = 11.25 % Relative Standard Deviation = 30.0 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 11.59 % Relative Standard Deviation = 31.9 Number of Observations = 44 Blind Sample ID = 50121-50105 Mean = 14.04 % Relative Standard Deviation = 38.3 Number of Observations = 47 Blind Sample ID = 50115-50103 Mean = 12.71 % Relative Standard Deviation = 42.1 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 14.78 % Relative Standard Deviation = 42.2 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 10.45 % Relative Standard Deviation = 20.4 Number of Observations = 22 Blind Sample ID = 25DW-75121 Mean = 54.25 % Relative Standard Deviation = 5.2 Number of Observations = 3 Blind Sample ID = 25DIW-75151 Mean = 80.63 % Relative Standard Deviation = 18.9 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 17.06 % Relative Standard Deviation = 57.8 Number of Observations = 17 Blind Sample ID = 25DIW-75131 Mean = 58.48 % Relative Standard Deviation = 13.1 Number of Observations = 3 Blind Sample ID = 25155-75153 Mean = 13.96 % Relative Standard Deviation = 46.7 Number of Observations = 32 Blind Sample ID = 25141-75139 Mean = 15.63 % Relative Standard Deviation = 40.3 Number of Observations = 16 Blind Sample ID = 25133-75127 Mean = 12.50 % Relative Standard Deviation = 47.1 Number of Observations = 40 Blind Sample ID = 25127-75125 Mean = 12.50 % Relative Standard Deviation = 39.5 Number of Observations = 40 Blind Sample ID = 25125-75127 Mean = 11.30 % Relative Standard Deviation = 35.4 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 14.09 % Relative Standard Deviation = 52.1 Number of Observations = 22 Blind Sample ID = 25123-75127 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 40 Blind Sample ID = 25117-75113 Mean = 16.00 % Relative Standard Deviation = 55.9 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Lead, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01051, MCode: GF100
Dates: 10/03/91 through 08/18/05
Open Data Set

Mean = 4.90 % Relative Standard Deviation = 5.0 Number of Observations = 14 Blind Sample ID = 75DIW-25155 Mean = 4.90 % Relative Standard Deviation = 7.3 Number of Observations = 24 Blind Sample ID = 75DIW-25151 Mean = 1.60 % Relative Standard Deviation = 16.4 Number of Observations = 10 Blind Sample ID = 75DIW-25137 Mean = 8.60 % Relative Standard Deviation = 8.6 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 24 Blind Sample ID = 67DW-33113 Mean = 4.08 % Relative Standard Deviation = 12.6 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 2.58 % Relative Standard Deviation = 19.9 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 11.22 % Relative Standard Deviation = 17.1 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 6.62 % Relative Standard Deviation = 10.2 Number of Observations = 18 Blind Sample ID = 50DIW-50145 Mean = 41.53 % Relative Standard Deviation = 4.5 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 2.18 % Relative Standard Deviation = 17.3 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 3.12 % Relative Standard Deviation = 6.6 Number of Observations = 16 Blind Sample ID = 50DIW-50137 Mean = 52.94 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 1.76 % Relative Standard Deviation = 12.9 Number of Observations = 8 Blind Sample ID = 50175-50DIW Mean = 4.15 % Relative Standard Deviation = 7.2 Number of Observations = 12 Blind Sample ID = 50175-50173 Mean = 2.55 % Relative Standard Deviation = 6.4 Number of Observations = 5 Blind Sample ID = 50173-50DIW Mean = 0.65 % Relative Standard Deviation = 17.7 Number of Observations = 23 Blind Sample ID = 50171-50DIW Mean = 3.10 % Relative Standard Deviation = 10.5 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 10.80 % Relative Standard Deviation = 3.0 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 11.13 % Relative Standard Deviation = 3.7 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 14.93 % Relative Standard Deviation = 5.7 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 21.24 % Relative Standard Deviation = 8.2 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 16.96 % Relative Standard Deviation = 9.9 Number of Observations = 12 Blind Sample ID = 50163-50DIW Mean = 8.47 % Relative Standard Deviation = 6.9 Number of Observations = 12 Blind Sample ID = 50161-50DIW Mean = 3.80 % Relative Standard Deviation = 9.6 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 9.20 % Relative Standard Deviation = 5.2 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 49.79 % Relative Standard Deviation = 12.0 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 8.69 % Relative Standard Deviation = 3.4 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 5.32 % Relative Standard Deviation = 11.1 Number of Observations = 17 Blind Sample ID = 50139-50141 Mean = 6.30 % Relative Standard Deviation = 7.3 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 54.41 % Relative Standard Deviation = 4.2 Number of Observations = 16 Blind Sample ID = 50135-50139 Mean = 54.46 % Relative Standard Deviation = 3.6 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 18.69 % Relative Standard Deviation = 4.0 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 9.32 % Relative Standard Deviation = 5.9 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 9.00 % Relative Standard Deviation = 8.4 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 9.81 % Relative Standard Deviation = 6.7 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 6.50 % Relative Standard Deviation = 8.1 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 11.44 % Relative Standard Deviation = 7.8 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 17.82 % Relative Standard Deviation = 9.0 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 6.82 % Relative Standard Deviation = 7.0 Number of Observations = 28 Blind Sample ID = 33DW-67123 Mean = 5.00 % Relative Standard Deviation = 7.8 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 9.76 % Relative Standard Deviation = 19.0 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 71.38 % Relative Standard Deviation = 12.6 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 11.83 % Relative Standard Deviation = 7.9 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 20.11 % Relative Standard Deviation = 3.7 Number of Observations = 19 Blind Sample ID = 33127-67133 Mean = 7.95 % Relative Standard Deviation = 13.2 Number of Observations = 20 Blind Sample ID = 33127-67123 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 44 Blind Sample ID = 25DW-75113 Mean = 9.57 % Relative Standard Deviation = 13.4 Number of Observations = 14 Blind Sample ID = 25DW-75105 Mean = 23.44 % Relative Standard Deviation = 11.7 Number of Observations = 16 Blind Sample ID = 25DIW-75163 Mean = 13.57 % Relative Standard Deviation = 6.0 Number of Observations = 16 Blind Sample ID = 25DIW-75159 Mean = 34.48 % Relative Standard Deviation = 5.5 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 10.78 % Relative Standard Deviation = 3.7 Number of Observations = 19 Blind Sample ID = 25DIW-75147 Mean = 64.14 % Relative Standard Deviation = 4.4 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 77.41 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 14.00 % Relative Standard Deviation = 5.3 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 2.51 % Relative Standard Deviation = 20.1 Number of Observations = 55 Blind Sample ID = 25DIW-75127 Mean = 2.53 % Relative Standard Deviation = 28.1 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 19.49 % Relative Standard Deviation = 7.3 Number of Observations = 19 Blind Sample ID = 25169-75167 Mean = 4.53 % Relative Standard Deviation = 4.9 Number of Observations = 5 Blind Sample ID = 25165-75DIW Mean = 20.45 % Relative Standard Deviation = 9.6 Number of Observations = 7 Blind Sample ID = 25163-75159 Mean = 17.80 % Relative Standard Deviation = 9.3 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 16.54 % Relative Standard Deviation = 8.8 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 20.45 % Relative Standard Deviation = 7.0 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 15.52 % Relative Standard Deviation = 3.4 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 10.45 % Relative Standard Deviation = 3.9 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 15.84 % Relative Standard Deviation = 2.7 Number of Observations = 9 Blind Sample ID = 25155-75147 Mean = 19.87 % Relative Standard Deviation = 12.2 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 13.17 % Relative Standard Deviation = 6.1 Number of Observations = 14 Blind Sample ID = 25147-75145 Mean = 14.09 % Relative Standard Deviation = 11.8 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 4.93 % Relative Standard Deviation = 2.1 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 5.88 % Relative Standard Deviation = 7.2 Number of Observations = 13 Blind Sample ID = 25139-75137 Mean = 79.39 % Relative Standard Deviation = 3.8 Number of Observations = 14 Blind Sample ID = 25137-75135 Mean = 9.57 % Relative Standard Deviation = 5.6 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 4.65 % Relative Standard Deviation = 14.2 Number of Observations = 40 Blind Sample ID = 25125-75127 Mean = 2.85 % Relative Standard Deviation = 12.9 Number of Observations = 20 Blind Sample ID = 25125-75113 Mean = 4.92 % Relative Standard Deviation = 10.5 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Lead, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01051, MCode: PLM48
Dates: 10/15/01 through 09/19/06
Open Data Set

Mean = 1.31 % Relative Standard Deviation = 17.4 Number of Observations = 24 Blind Sample ID = 75179-25DIW Mean = 2.31 % Relative Standard Deviation = 4.4 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 0.79 % Relative Standard Deviation = 5.3 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 8.70 % Relative Standard Deviation = 2.3 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 3.13 % Relative Standard Deviation = 3.1 Number of Observations = 26 Blind Sample ID = 50177-50179 Mean = 1.52 % Relative Standard Deviation = 3.9 Number of Observations = 36 Blind Sample ID = 50175-50DIW Mean = 4.00 % Relative Standard Deviation = 3.1 Number of Observations = 19 Blind Sample ID = 50175-50173 Mean = 2.38 % Relative Standard Deviation = 2.3 Number of Observations = 26 Blind Sample ID = 50173-50DIW Mean = 0.54 % Relative Standard Deviation = 3.5 Number of Observations = 12 Blind Sample ID = 50171-50DIW Mean = 2.91 % Relative Standard Deviation = 2.4 Number of Observations = 16 Blind Sample ID = 50171-50173 Mean = 10.83 % Relative Standard Deviation = 2.4 Number of Observations = 6 Blind Sample ID = 50167-50DIW Mean = 11.09 % Relative Standard Deviation = 1.5 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 16.08 % Relative Standard Deviation = 2.3 Number of Observations = 7 Blind Sample ID = 50163-50DIW Mean = 8.37 % Relative Standard Deviation = 4.8 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 23.88 % Relative Standard Deviation = 3.0 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 3.73 % Relative Standard Deviation = 4.2 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 3.33 % Relative Standard Deviation = 4.6 Number of Observations = 31 Blind Sample ID = 25177-75175 Mean = 2.60 % Relative Standard Deviation = 2.8 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 4.88 % Relative Standard Deviation = 1.0 Number of Observations = 8 Blind Sample ID = 25165-75DIW
The SGPlot Procedure


- Lithium, FIL, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01130, MCode: AA021
Dates: 10/04/91 through 03/27/96
Open Data Set

Mean = 55.00 % Relative Standard Deviation = 10.5 Number of Observations = 4 Blind Sample ID = 33DIW-67135 Mean = 13.33 % Relative Standard Deviation = 36.9 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 62.50 % Relative Standard Deviation = 8.0 Number of Observations = 4 Blind Sample ID = 25DIW-75135 Mean = 12.50 % Relative Standard Deviation = 36.2 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 36.67 % Relative Standard Deviation = 15.7 Number of Observations = 3 Blind Sample ID = 25133-75127 Mean = 23.33 % Relative Standard Deviation = 21.1 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Lithium, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01130, MCode: PLM40
Dates: 10/23/01 through 09/19/06
Open Data Set

Mean = 4.61 % Relative Standard Deviation = 10.9 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 2.36 % Relative Standard Deviation = 10.7 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 7.25 % Relative Standard Deviation = 6.8 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 10.70 % Relative Standard Deviation = 11.4 Number of Observations = 23 Blind Sample ID = 50177-50179 Mean = 1.66 % Relative Standard Deviation = 13.9 Number of Observations = 30 Blind Sample ID = 50175-50DIW Mean = 10.31 % Relative Standard Deviation = 7.8 Number of Observations = 19 Blind Sample ID = 50175-50173 Mean = 8.60 % Relative Standard Deviation = 8.5 Number of Observations = 21 Blind Sample ID = 50173-50DIW Mean = 3.19 % Relative Standard Deviation = 8.3 Number of Observations = 36 Blind Sample ID = 50171-50DIW Mean = 11.22 % Relative Standard Deviation = 9.3 Number of Observations = 16 Blind Sample ID = 50171-50173 Mean = 6.78 % Relative Standard Deviation = 7.6 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 9.91 % Relative Standard Deviation = 7.6 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 0.65 % Relative Standard Deviation = 10.7 Number of Observations = 12 Blind Sample ID = 50163-50DIW Mean = 8.63 % Relative Standard Deviation = 5.7 Number of Observations = 15 Blind Sample ID = 50161-50DIW Mean = 12.68 % Relative Standard Deviation = 10.7 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 6.09 % Relative Standard Deviation = 9.4 Number of Observations = 28 Blind Sample ID = 25177-75175 Mean = 3.86 % Relative Standard Deviation = 12.0 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 12.59 % Relative Standard Deviation = 6.9 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 10.72 % Relative Standard Deviation = 6.1 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 8.45 % Relative Standard Deviation = 6.6 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 10.07 % Relative Standard Deviation = 6.4 Number of Observations = 12 Blind Sample ID = 25161-75159
The SGPlot Procedure


- Lithium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01130, MCode: PLA11
Dates: 10/02/91 through 09/29/06
Open Data Set

Mean = 7.37 % Relative Standard Deviation = 11.3 Number of Observations = 8 Blind Sample ID = 75DIW-25151 Mean = 5.60 % Relative Standard Deviation = 1.7 Number of Observations = 4 Blind Sample ID = 75179-25DIW Mean = 2.47 % Relative Standard Deviation = 2.7 Number of Observations = 4 Blind Sample ID = 75175-25DIW Mean = 4.80 % Relative Standard Deviation = 3.2 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 7.45 % Relative Standard Deviation = 7.2 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 14.44 % Relative Standard Deviation = 15.0 Number of Observations = 41 Blind Sample ID = 67DW-33113 Mean = 10.07 % Relative Standard Deviation = 4.3 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 10.27 % Relative Standard Deviation = 8.1 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 5.76 % Relative Standard Deviation = 21.2 Number of Observations = 8 Blind Sample ID = 50DIW-50137 Mean = 35.46 % Relative Standard Deviation = 3.1 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 1.49 % Relative Standard Deviation = 2.9 Number of Observations = 11 Blind Sample ID = 50175-50DIW Mean = 11.41 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = 50175-50173 Mean = 9.26 % Relative Standard Deviation = 3.6 Number of Observations = 8 Blind Sample ID = 50173-50DIW Mean = 2.84 % Relative Standard Deviation = 18.0 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 13.01 % Relative Standard Deviation = 1.2 Number of Observations = 4 Blind Sample ID = 50171-50173 Mean = 5.75 % Relative Standard Deviation = 17.2 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 10.67 % Relative Standard Deviation = 5.1 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 21.97 % Relative Standard Deviation = 9.1 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 24.19 % Relative Standard Deviation = 7.2 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 8.80 % Relative Standard Deviation = 16.1 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 16.28 % Relative Standard Deviation = 5.7 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 16.20 % Relative Standard Deviation = 8.7 Number of Observations = 13 Blind Sample ID = 50155-50DIW Mean = 23.60 % Relative Standard Deviation = 6.3 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 24.23 % Relative Standard Deviation = 4.3 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 24.72 % Relative Standard Deviation = 4.5 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 15.43 % Relative Standard Deviation = 7.6 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 40.49 % Relative Standard Deviation = 4.1 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 15.00 % Relative Standard Deviation = 22.0 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 43.92 % Relative Standard Deviation = 4.4 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 17.43 % Relative Standard Deviation = 10.3 Number of Observations = 30 Blind Sample ID = 50123-50121 Mean = 21.38 % Relative Standard Deviation = 9.0 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 51.08 % Relative Standard Deviation = 4.4 Number of Observations = 60 Blind Sample ID = 50121-50105 Mean = 79.78 % Relative Standard Deviation = 3.5 Number of Observations = 49 Blind Sample ID = 50115-50103 Mean = 47.77 % Relative Standard Deviation = 4.8 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 50.80 % Relative Standard Deviation = 4.4 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 5.88 % Relative Standard Deviation = 24.8 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 17.92 % Relative Standard Deviation = 9.5 Number of Observations = 13 Blind Sample ID = 33DW-67121 Mean = 46.75 % Relative Standard Deviation = 2.7 Number of Observations = 4 Blind Sample ID = 33DIW-67135 Mean = 18.78 % Relative Standard Deviation = 10.0 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 6.40 % Relative Standard Deviation = 10.7 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 40.19 % Relative Standard Deviation = 5.0 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 20.97 % Relative Standard Deviation = 7.6 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 12.27 % Relative Standard Deviation = 34.6 Number of Observations = 8 Blind Sample ID = 25DIW-75147 Mean = 14.46 % Relative Standard Deviation = 7.6 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 51.94 % Relative Standard Deviation = 5.9 Number of Observations = 29 Blind Sample ID = 25DIW-75135 Mean = 12.17 % Relative Standard Deviation = 30.3 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 14.31 % Relative Standard Deviation = 5.9 Number of Observations = 4 Blind Sample ID = 25179-75177 Mean = 6.96 % Relative Standard Deviation = 1.3 Number of Observations = 4 Blind Sample ID = 25177-75175 Mean = 4.12 % Relative Standard Deviation = 2.8 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 13.04 % Relative Standard Deviation = 7.9 Number of Observations = 4 Blind Sample ID = 25169-75167 Mean = 7.80 % Relative Standard Deviation = 3.0 Number of Observations = 4 Blind Sample ID = 25165-75DIW Mean = 6.47 % Relative Standard Deviation = 8.8 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 11.04 % Relative Standard Deviation = 10.4 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 16.06 % Relative Standard Deviation = 5.7 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 27.92 % Relative Standard Deviation = 3.8 Number of Observations = 6 Blind Sample ID = 25159-75155 Mean = 14.64 % Relative Standard Deviation = 4.8 Number of Observations = 11 Blind Sample ID = 25157-75159 Mean = 33.95 % Relative Standard Deviation = 5.8 Number of Observations = 7 Blind Sample ID = 25155-75157 Mean = 48.69 % Relative Standard Deviation = 2.9 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 21.52 % Relative Standard Deviation = 6.7 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 31.14 % Relative Standard Deviation = 6.1 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 25.18 % Relative Standard Deviation = 7.7 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 21.34 % Relative Standard Deviation = 3.7 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 19.36 % Relative Standard Deviation = 8.8 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 13.15 % Relative Standard Deviation = 5.6 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 30.75 % Relative Standard Deviation = 4.3 Number of Observations = 20 Blind Sample ID = 25133-75127 Mean = 18.67 % Relative Standard Deviation = 13.9 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 22.51 % Relative Standard Deviation = 8.9 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 38.22 % Relative Standard Deviation = 5.1 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 21.08 % Relative Standard Deviation = 13.6 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 39.41 % Relative Standard Deviation = 5.3 Number of Observations = 41 Blind Sample ID = 25117-75113 Mean = 51.38 % Relative Standard Deviation = 4.2 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 22.00 % Relative Standard Deviation = 89.9 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Lithium, UNF, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01132, MCode: AA057
Dates: 10/10/91 through 01/25/99
Open Data Set

Mean = 11.11 % Relative Standard Deviation = 30.0 Number of Observations = 9 Blind Sample ID = 50DW-50125 Mean = 14.17 % Relative Standard Deviation = 36.3 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 38.89 % Relative Standard Deviation = 8.6 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 22.86 % Relative Standard Deviation = 5.9 Number of Observations = 7 Blind Sample ID = 50143-50145 Mean = 23.50 % Relative Standard Deviation = 8.1 Number of Observations = 4 Blind Sample ID = 50139-50145 Mean = 33.08 % Relative Standard Deviation = 14.5 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 15.83 % Relative Standard Deviation = 41.3 Number of Observations = 24 Blind Sample ID = 50125-50123 Mean = 29.00 % Relative Standard Deviation = 10.9 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 92.73 % Relative Standard Deviation = 10.9 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 37.37 % Relative Standard Deviation = 12.1 Number of Observations = 19 Blind Sample ID = 25DW-75113 Mean = 59.23 % Relative Standard Deviation = 4.7 Number of Observations = 13 Blind Sample ID = 25DW-75105 Mean = 20.00 % Relative Standard Deviation = 18.9 Number of Observations = 15 Blind Sample ID = 25DIW-75127
The SGPlot Procedure


- Lithium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01132, MCode: PLA15
Dates: 04/26/99 through 09/27/02
Open Data Set

Mean = 7.69 % Relative Standard Deviation = 10.7 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 8.70 % Relative Standard Deviation = 5.8 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 15.93 % Relative Standard Deviation = 7.1 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 18.02 % Relative Standard Deviation = 31.9 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 12.78 % Relative Standard Deviation = 5.4 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 9.80 % Relative Standard Deviation = 10.9 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 13.05 % Relative Standard Deviation = 12.0 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 21.07 % Relative Standard Deviation = 2.4 Number of Observations = 3 Blind Sample ID = 25155-75147
The SGPlot Procedure


- Manganese, FIL, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01056, MCode: AA025
Dates: 10/04/91 through 03/29/96
Open Data Set

Mean = 20.00 % Relative Standard Deviation = 0.0 Number of Observations = 10 Blind Sample ID = 67DW-33113 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 32 Blind Sample ID = 50DW-50123 Mean = 15.63 % Relative Standard Deviation = 32.3 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 228.62 % Relative Standard Deviation = 2.3 Number of Observations = 29 Blind Sample ID = 50DW-50115 Mean = 61.67 % Relative Standard Deviation = 9.4 Number of Observations = 12 Blind Sample ID = 50DIW-50133 Mean = 11.67 % Relative Standard Deviation = 32.6 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 240.00 % Relative Standard Deviation = 7.2 Number of Observations = 3 Blind Sample ID = 50115-50103 Mean = 21.21 % Relative Standard Deviation = 28.3 Number of Observations = 33 Blind Sample ID = 33DW-67121 Mean = 306.67 % Relative Standard Deviation = 3.8 Number of Observations = 3 Blind Sample ID = 33DW-67115 Mean = 52.00 % Relative Standard Deviation = 7.8 Number of Observations = 30 Blind Sample ID = 33DW-67105 Mean = 291.54 % Relative Standard Deviation = 2.7 Number of Observations = 13 Blind Sample ID = 33DIW-67135 Mean = 28.86 % Relative Standard Deviation = 18.4 Number of Observations = 35 Blind Sample ID = 33DIW-67131 Mean = 10.83 % Relative Standard Deviation = 34.0 Number of Observations = 36 Blind Sample ID = 33DIW-67127 Mean = 21.88 % Relative Standard Deviation = 21.5 Number of Observations = 32 Blind Sample ID = 25DW-75121 Mean = 54.67 % Relative Standard Deviation = 9.3 Number of Observations = 30 Blind Sample ID = 25DW-75105 Mean = 312.50 % Relative Standard Deviation = 4.0 Number of Observations = 4 Blind Sample ID = 25DIW-75135 Mean = 31.82 % Relative Standard Deviation = 27.5 Number of Observations = 11 Blind Sample ID = 25DIW-75131 Mean = 36.67 % Relative Standard Deviation = 15.7 Number of Observations = 3 Blind Sample ID = 25133-75127 Mean = 10.83 % Relative Standard Deviation = 26.6 Number of Observations = 12 Blind Sample ID = 25123-75127 Mean = 23.33 % Relative Standard Deviation = 24.7 Number of Observations = 3 Blind Sample ID =
The SGPlot Procedure


- Manganese, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01056, MCode: PLM43
Dates: 02/07/94 through 09/19/06
Open Data Set

Mean = 5.79 % Relative Standard Deviation = 6.4 Number of Observations = 34 Blind Sample ID = GT3 Mean = 12.83 % Relative Standard Deviation = 4.4 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 1.03 % Relative Standard Deviation = 4.3 Number of Observations = 15 Blind Sample ID = 75DIW-25139 Mean = 23.32 % Relative Standard Deviation = 1.9 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 4.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 32.30 % Relative Standard Deviation = 7.4 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 37.45 % Relative Standard Deviation = 5.4 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 20.20 % Relative Standard Deviation = 5.3 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 10.55 % Relative Standard Deviation = 5.5 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 8.99 % Relative Standard Deviation = 1.9 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 207.58 % Relative Standard Deviation = 2.9 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 200.24 % Relative Standard Deviation = 5.8 Number of Observations = 23 Blind Sample ID = 50177-50179 Mean = 23.72 % Relative Standard Deviation = 7.2 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 266.64 % Relative Standard Deviation = 4.5 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 245.91 % Relative Standard Deviation = 4.4 Number of Observations = 28 Blind Sample ID = 50173-50DIW Mean = 5.99 % Relative Standard Deviation = 6.8 Number of Observations = 47 Blind Sample ID = 50171-50DIW Mean = 249.37 % Relative Standard Deviation = 5.1 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 9.22 % Relative Standard Deviation = 6.0 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 15.51 % Relative Standard Deviation = 5.2 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 7.81 % Relative Standard Deviation = 5.3 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 18.60 % Relative Standard Deviation = 4.5 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 73.19 % Relative Standard Deviation = 4.9 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 24.18 % Relative Standard Deviation = 5.8 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 15.63 % Relative Standard Deviation = 4.2 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 18.89 % Relative Standard Deviation = 2.1 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 254.38 % Relative Standard Deviation = 1.7 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 66.47 % Relative Standard Deviation = 2.9 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 14.78 % Relative Standard Deviation = 7.4 Number of Observations = 32 Blind Sample ID = 50125-50123 Mean = 269.62 % Relative Standard Deviation = 4.6 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 124.50 % Relative Standard Deviation = 6.2 Number of Observations = 28 Blind Sample ID = 25177-75175 Mean = 37.82 % Relative Standard Deviation = 6.4 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 20.25 % Relative Standard Deviation = 6.2 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 24.40 % Relative Standard Deviation = 4.6 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 5.25 % Relative Standard Deviation = 6.9 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 25.96 % Relative Standard Deviation = 3.4 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 50.48 % Relative Standard Deviation = 4.4 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 67.96 % Relative Standard Deviation = 5.1 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 41.29 % Relative Standard Deviation = 4.7 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 17.99 % Relative Standard Deviation = 5.0 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 8.33 % Relative Standard Deviation = 6.2 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 49.81 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Manganese, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01056, MCode: PLA11
Dates: 10/02/91 through 09/29/06
Open Data Set

Mean = 12.97 % Relative Standard Deviation = 8.2 Number of Observations = 36 Blind Sample ID = 75DIW-25155 Mean = 3.39 % Relative Standard Deviation = 13.7 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 1.21 % Relative Standard Deviation = 37.1 Number of Observations = 34 Blind Sample ID = 75DIW-25139 Mean = 23.47 % Relative Standard Deviation = 4.0 Number of Observations = 31 Blind Sample ID = 75DIW-25137 Mean = 32.82 % Relative Standard Deviation = 3.1 Number of Observations = 23 Blind Sample ID = 75179-25DIW Mean = 37.14 % Relative Standard Deviation = 2.5 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 9.45 % Relative Standard Deviation = 3.4 Number of Observations = 32 Blind Sample ID = 75171-25DIW Mean = 20.47 % Relative Standard Deviation = 5.4 Number of Observations = 36 Blind Sample ID = 75169-25DIW Mean = 21.24 % Relative Standard Deviation = 9.6 Number of Observations = 46 Blind Sample ID = 67DW-33113 Mean = 10.66 % Relative Standard Deviation = 9.0 Number of Observations = 22 Blind Sample ID = 50DIW-50145 Mean = 8.93 % Relative Standard Deviation = 3.2 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 1.25 % Relative Standard Deviation = 19.3 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 47.23 % Relative Standard Deviation = 2.4 Number of Observations = 16 Blind Sample ID = 50DIW-50137 Mean = 206.26 % Relative Standard Deviation = 1.7 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 60.42 % Relative Standard Deviation = 2.5 Number of Observations = 12 Blind Sample ID = 50DIW-50133 Mean = 190.48 % Relative Standard Deviation = 1.8 Number of Observations = 24 Blind Sample ID = 50177-50179 Mean = 24.75 % Relative Standard Deviation = 1.7 Number of Observations = 47 Blind Sample ID = 50175-50DIW Mean = 272.95 % Relative Standard Deviation = 1.9 Number of Observations = 23 Blind Sample ID = 50175-50173 Mean = 248.00 % Relative Standard Deviation = 1.7 Number of Observations = 23 Blind Sample ID = 50173-50DIW Mean = 6.22 % Relative Standard Deviation = 3.5 Number of Observations = 43 Blind Sample ID = 50171-50DIW Mean = 253.86 % Relative Standard Deviation = 1.6 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 9.12 % Relative Standard Deviation = 8.2 Number of Observations = 12 Blind Sample ID = 50167-50DIW Mean = 15.43 % Relative Standard Deviation = 3.3 Number of Observations = 36 Blind Sample ID = 50167-50171 Mean = 24.42 % Relative Standard Deviation = 2.3 Number of Observations = 63 Blind Sample ID = 50165-50169 Mean = 20.04 % Relative Standard Deviation = 4.7 Number of Observations = 64 Blind Sample ID = 50165-50167 Mean = 8.10 % Relative Standard Deviation = 3.7 Number of Observations = 12 Blind Sample ID = 50163-50DIW Mean = 19.11 % Relative Standard Deviation = 1.8 Number of Observations = 11 Blind Sample ID = 50161-50DIW Mean = 76.03 % Relative Standard Deviation = 3.5 Number of Observations = 19 Blind Sample ID = 50157-50DIW Mean = 24.45 % Relative Standard Deviation = 2.9 Number of Observations = 63 Blind Sample ID = 50155-50DIW Mean = 15.10 % Relative Standard Deviation = 6.0 Number of Observations = 18 Blind Sample ID = 50147-50151 Mean = 19.23 % Relative Standard Deviation = 3.8 Number of Observations = 16 Blind Sample ID = 50145-50147 Mean = 15.93 % Relative Standard Deviation = 4.4 Number of Observations = 21 Blind Sample ID = 50143-50151 Mean = 19.61 % Relative Standard Deviation = 2.6 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 11.60 % Relative Standard Deviation = 3.1 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 11.25 % Relative Standard Deviation = 9.2 Number of Observations = 27 Blind Sample ID = 50139-50141 Mean = 56.57 % Relative Standard Deviation = 2.4 Number of Observations = 18 Blind Sample ID = 50137-50143 Mean = 57.92 % Relative Standard Deviation = 2.4 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 48.03 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = 50137-50139 Mean = 210.73 % Relative Standard Deviation = 2.9 Number of Observations = 41 Blind Sample ID = 50135-50139 Mean = 255.02 % Relative Standard Deviation = 2.4 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 27.56 % Relative Standard Deviation = 3.3 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 220.40 % Relative Standard Deviation = 2.4 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 21.23 % Relative Standard Deviation = 3.4 Number of Observations = 30 Blind Sample ID = 50123-50121 Mean = 23.46 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 52.02 % Relative Standard Deviation = 3.7 Number of Observations = 60 Blind Sample ID = 50121-50105 Mean = 227.17 % Relative Standard Deviation = 2.4 Number of Observations = 60 Blind Sample ID = 50115-50103 Mean = 142.92 % Relative Standard Deviation = 3.8 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 28.30 % Relative Standard Deviation = 4.2 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 9.00 % Relative Standard Deviation = 4.6 Number of Observations = 24 Blind Sample ID = 33DW-67123 Mean = 19.27 % Relative Standard Deviation = 2.3 Number of Observations = 26 Blind Sample ID = 33DW-67121 Mean = 297.59 % Relative Standard Deviation = 2.5 Number of Observations = 29 Blind Sample ID = 33DW-67115 Mean = 275.63 % Relative Standard Deviation = 1.9 Number of Observations = 16 Blind Sample ID = 33DIW-67135 Mean = 3.78 % Relative Standard Deviation = 17.6 Number of Observations = 9 Blind Sample ID = 33DIW-67127 Mean = 82.86 % Relative Standard Deviation = 2.6 Number of Observations = 29 Blind Sample ID = 33127-67133 Mean = 10.84 % Relative Standard Deviation = 5.9 Number of Observations = 31 Blind Sample ID = 33127-67123 Mean = 21.61 % Relative Standard Deviation = 3.6 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 48.10 % Relative Standard Deviation = 2.5 Number of Observations = 30 Blind Sample ID = 25DW-75113 Mean = 55.19 % Relative Standard Deviation = 3.3 Number of Observations = 16 Blind Sample ID = 25DW-75105 Mean = 12.02 % Relative Standard Deviation = 2.8 Number of Observations = 16 Blind Sample ID = 25DIW-75163 Mean = 17.23 % Relative Standard Deviation = 5.1 Number of Observations = 15 Blind Sample ID = 25DIW-75159 Mean = 56.23 % Relative Standard Deviation = 4.5 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 9.79 % Relative Standard Deviation = 6.6 Number of Observations = 89 Blind Sample ID = 25DIW-75151 Mean = 12.84 % Relative Standard Deviation = 6.1 Number of Observations = 16 Blind Sample ID = 25DIW-75147 Mean = 13.97 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 313.17 % Relative Standard Deviation = 2.7 Number of Observations = 29 Blind Sample ID = 25DIW-75135 Mean = 27.83 % Relative Standard Deviation = 3.9 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 4.24 % Relative Standard Deviation = 12.8 Number of Observations = 55 Blind Sample ID = 25DIW-75127 Mean = 259.01 % Relative Standard Deviation = 2.4 Number of Observations = 24 Blind Sample ID = 25179-75177 Mean = 121.84 % Relative Standard Deviation = 2.3 Number of Observations = 23 Blind Sample ID = 25177-75175 Mean = 40.31 % Relative Standard Deviation = 1.8 Number of Observations = 28 Blind Sample ID = 25171-75175 Mean = 20.92 % Relative Standard Deviation = 3.6 Number of Observations = 99 Blind Sample ID = 25169-75167 Mean = 25.59 % Relative Standard Deviation = 3.2 Number of Observations = 19 Blind Sample ID = 25167-75169 Mean = 5.23 % Relative Standard Deviation = 6.4 Number of Observations = 12 Blind Sample ID = 25165-75DIW Mean = 21.16 % Relative Standard Deviation = 3.2 Number of Observations = 70 Blind Sample ID = 25163-75159 Mean = 26.70 % Relative Standard Deviation = 2.9 Number of Observations = 60 Blind Sample ID = 25161-75159 Mean = 34.32 % Relative Standard Deviation = 2.4 Number of Observations = 64 Blind Sample ID = 25159-75161 Mean = 44.01 % Relative Standard Deviation = 2.5 Number of Observations = 59 Blind Sample ID = 25159-75155 Mean = 51.55 % Relative Standard Deviation = 2.2 Number of Observations = 20 Blind Sample ID = 25157-75159 Mean = 126.24 % Relative Standard Deviation = 2.6 Number of Observations = 56 Blind Sample ID = 25155-75157 Mean = 69.15 % Relative Standard Deviation = 4.3 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 22.42 % Relative Standard Deviation = 3.3 Number of Observations = 28 Blind Sample ID = 25155-75151 Mean = 25.40 % Relative Standard Deviation = 4.4 Number of Observations = 42 Blind Sample ID = 25155-75147 Mean = 41.06 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 59.08 % Relative Standard Deviation = 2.8 Number of Observations = 22 Blind Sample ID = 25151-75153 Mean = 16.45 % Relative Standard Deviation = 4.8 Number of Observations = 26 Blind Sample ID = 25151-75147 Mean = 17.10 % Relative Standard Deviation = 3.9 Number of Observations = 22 Blind Sample ID = 25151-75143 Mean = 20.26 % Relative Standard Deviation = 3.4 Number of Observations = 55 Blind Sample ID = 25147-75145 Mean = 18.35 % Relative Standard Deviation = 4.9 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 6.85 % Relative Standard Deviation = 5.0 Number of Observations = 23 Blind Sample ID = 25141-75139 Mean = 71.84 % Relative Standard Deviation = 2.1 Number of Observations = 37 Blind Sample ID = 25139-75137 Mean = 34.35 % Relative Standard Deviation = 3.4 Number of Observations = 20 Blind Sample ID = 25133-75127 Mean = 14.62 % Relative Standard Deviation = 4.3 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 8.68 % Relative Standard Deviation = 7.2 Number of Observations = 105 Blind Sample ID = 25125-75127 Mean = 52.85 % Relative Standard Deviation = 2.3 Number of Observations = 62 Blind Sample ID = 25125-75113 Mean = 7.25 % Relative Standard Deviation = 17.4 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 102.82 % Relative Standard Deviation = 4.5 Number of Observations = 56 Blind Sample ID = 25117-75113 Mean = 60.40 % Relative Standard Deviation = 2.9 Number of Observations = 55 Blind Sample ID = 25101-75113 Mean = 29.80 % Relative Standard Deviation = 12.4 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Manganese, FIL, ICP-OES, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01056, MCode: PLA09
Dates: 10/08/92 through 09/27/94
Open Data Set

Mean = 54.88 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 75DW-25117 Mean = 21.13 % Relative Standard Deviation = 6.4 Number of Observations = 8 Blind Sample ID = 67DW-33113 Mean = 111.25 % Relative Standard Deviation = 3.2 Number of Observations = 8 Blind Sample ID = 50DW-50117 Mean = 19.00 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 33DW-67121 Mean = 22.19 % Relative Standard Deviation = 3.4 Number of Observations = 16 Blind Sample ID = 25DW-75121
The SGPlot Procedure


- Manganese, UNF, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01055, MCode: AA060
Dates: 10/10/91 through 03/15/99
Open Data Set

Mean = 26.41 % Relative Standard Deviation = 30.7 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 10.83 % Relative Standard Deviation = 26.6 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 117.50 % Relative Standard Deviation = 8.2 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 32.22 % Relative Standard Deviation = 13.7 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 10.22 % Relative Standard Deviation = 6.5 Number of Observations = 9 Blind Sample ID = 50DIW-50145 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 45.00 % Relative Standard Deviation = 6.1 Number of Observations = 8 Blind Sample ID = 50DIW-50137 Mean = 209.50 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 19.88 % Relative Standard Deviation = 14.6 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 13.75 % Relative Standard Deviation = 12.1 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 57.00 % Relative Standard Deviation = 8.2 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 250.63 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 66.15 % Relative Standard Deviation = 7.7 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 20.00 % Relative Standard Deviation = 30.4 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 27.50 % Relative Standard Deviation = 25.7 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 58.13 % Relative Standard Deviation = 15.7 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 127.00 % Relative Standard Deviation = 7.5 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 226.88 % Relative Standard Deviation = 4.2 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 255.45 % Relative Standard Deviation = 5.6 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 12.50 % Relative Standard Deviation = 37.0 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 22.86 % Relative Standard Deviation = 36.1 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 305.33 % Relative Standard Deviation = 2.1 Number of Observations = 15 Blind Sample ID = 33DW-67115 Mean = 273.75 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 22.50 % Relative Standard Deviation = 38.5 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 55.00 % Relative Standard Deviation = 12.0 Number of Observations = 24 Blind Sample ID = 25DW-75113 Mean = 62.00 % Relative Standard Deviation = 10.2 Number of Observations = 10 Blind Sample ID = 25DW-75105 Mean = 15.08 % Relative Standard Deviation = 13.7 Number of Observations = 12 Blind Sample ID = 25DIW-75143 Mean = 313.81 % Relative Standard Deviation = 6.6 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 31.82 % Relative Standard Deviation = 12.7 Number of Observations = 11 Blind Sample ID = 25DIW-75131 Mean = 10.63 % Relative Standard Deviation = 23.5 Number of Observations = 16 Blind Sample ID = 25DIW-75127 Mean = 24.17 % Relative Standard Deviation = 33.8 Number of Observations = 6 Blind Sample ID = 25147-75145 Mean = 18.00 % Relative Standard Deviation = 10.1 Number of Observations = 4 Blind Sample ID = 25145-75147 Mean = 10.13 % Relative Standard Deviation = 3.5 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 71.00 % Relative Standard Deviation = 5.0 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 40.00 % Relative Standard Deviation = 20.4 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 13.33 % Relative Standard Deviation = 48.9 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Manganese, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01055, MCode: PLM48
Dates: 11/08/02 through 09/19/06
Open Data Set

Mean = 31.22 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = 75179-25DIW Mean = 35.45 % Relative Standard Deviation = 6.0 Number of Observations = 19 Blind Sample ID = 75175-25DIW Mean = 9.01 % Relative Standard Deviation = 5.5 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 19.88 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 187.16 % Relative Standard Deviation = 3.4 Number of Observations = 24 Blind Sample ID = 50177-50179 Mean = 23.42 % Relative Standard Deviation = 3.2 Number of Observations = 22 Blind Sample ID = 50175-50DIW Mean = 257.10 % Relative Standard Deviation = 6.8 Number of Observations = 12 Blind Sample ID = 50175-50173 Mean = 230.58 % Relative Standard Deviation = 6.2 Number of Observations = 13 Blind Sample ID = 50173-50DIW Mean = 6.04 % Relative Standard Deviation = 5.2 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 236.17 % Relative Standard Deviation = 6.9 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 9.27 % Relative Standard Deviation = 3.8 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 14.71 % Relative Standard Deviation = 3.0 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 255.68 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 25179-75177 Mean = 117.06 % Relative Standard Deviation = 4.9 Number of Observations = 26 Blind Sample ID = 25177-75175 Mean = 36.24 % Relative Standard Deviation = 3.9 Number of Observations = 8 Blind Sample ID = 25171-75175 Mean = 5.21 % Relative Standard Deviation = 4.7 Number of Observations = 8 Blind Sample ID = 25165-75DIW
The SGPlot Procedure


- Manganese, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01055, MCode: PLA15
Dates: 04/05/99 through 09/07/06
Open Data Set

Mean = 12.43 % Relative Standard Deviation = 6.8 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 3.16 % Relative Standard Deviation = 12.1 Number of Observations = 11 Blind Sample ID = 75DIW-25151 Mean = 33.51 % Relative Standard Deviation = 3.1 Number of Observations = 4 Blind Sample ID = 75179-25DIW Mean = 35.48 % Relative Standard Deviation = 3.1 Number of Observations = 8 Blind Sample ID = 75175-25DIW Mean = 8.87 % Relative Standard Deviation = 4.4 Number of Observations = 30 Blind Sample ID = 75171-25DIW Mean = 20.60 % Relative Standard Deviation = 6.5 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 10.19 % Relative Standard Deviation = 5.7 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 184.65 % Relative Standard Deviation = 1.9 Number of Observations = 8 Blind Sample ID = 50177-50179 Mean = 24.67 % Relative Standard Deviation = 2.9 Number of Observations = 13 Blind Sample ID = 50175-50DIW Mean = 264.69 % Relative Standard Deviation = 2.3 Number of Observations = 8 Blind Sample ID = 50175-50173 Mean = 244.68 % Relative Standard Deviation = 1.7 Number of Observations = 8 Blind Sample ID = 50173-50DIW Mean = 6.14 % Relative Standard Deviation = 2.6 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 248.95 % Relative Standard Deviation = 2.1 Number of Observations = 4 Blind Sample ID = 50171-50173 Mean = 9.06 % Relative Standard Deviation = 3.4 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 15.02 % Relative Standard Deviation = 3.7 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 23.21 % Relative Standard Deviation = 5.4 Number of Observations = 6 Blind Sample ID = 50165-50169 Mean = 18.82 % Relative Standard Deviation = 6.7 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 7.20 % Relative Standard Deviation = 15.5 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 18.94 % Relative Standard Deviation = 6.3 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 73.94 % Relative Standard Deviation = 1.9 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 23.96 % Relative Standard Deviation = 1.2 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 12.21 % Relative Standard Deviation = 8.0 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 16.40 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 53.84 % Relative Standard Deviation = 4.4 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 12.59 % Relative Standard Deviation = 4.8 Number of Observations = 12 Blind Sample ID = 25DIW-75147 Mean = 13.68 % Relative Standard Deviation = 0.6 Number of Observations = 3 Blind Sample ID = 25DIW-75143 Mean = 252.20 % Relative Standard Deviation = 1.7 Number of Observations = 8 Blind Sample ID = 25179-75177 Mean = 117.27 % Relative Standard Deviation = 2.1 Number of Observations = 8 Blind Sample ID = 25177-75175 Mean = 39.55 % Relative Standard Deviation = 2.5 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 19.16 % Relative Standard Deviation = 6.9 Number of Observations = 3 Blind Sample ID = 25169-75167 Mean = 5.42 % Relative Standard Deviation = 22.6 Number of Observations = 5 Blind Sample ID = 25165-75DIW Mean = 20.75 % Relative Standard Deviation = 3.9 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 25.49 % Relative Standard Deviation = 1.7 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 33.27 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 43.90 % Relative Standard Deviation = 1.7 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 50.30 % Relative Standard Deviation = 0.9 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 120.78 % Relative Standard Deviation = 1.5 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 25.62 % Relative Standard Deviation = 2.2 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 39.57 % Relative Standard Deviation = 3.2 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 18.95 % Relative Standard Deviation = 4.0 Number of Observations = 6 Blind Sample ID = 25147-75145 Mean = 18.20 % Relative Standard Deviation = 5.3 Number of Observations = 4 Blind Sample ID = 25145-75147
The SGPlot Procedure


- Mercury, FIL,CVAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 71890, MCode: CV013
Dates: 10/03/91 through 03/23/01
Open Data Set

Mean = 0.52 % Relative Standard Deviation = 83.4 Number of Observations = 8 Blind Sample ID = 75DIW-25155 Mean = 1.46 % Relative Standard Deviation = 50.0 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 0.87 % Relative Standard Deviation = 84.4 Number of Observations = 20 Blind Sample ID = 75DIW-25139 Mean = 1.09 % Relative Standard Deviation = 149.6 Number of Observations = 8 Blind Sample ID = 75DIW-25137 Mean = 2.26 % Relative Standard Deviation = 46.6 Number of Observations = 34 Blind Sample ID = 67DW-33113 Mean = 0.17 % Relative Standard Deviation = 30.4 Number of Observations = 32 Blind Sample ID = 50DW-50123 Mean = 0.71 % Relative Standard Deviation = 14.1 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 0.81 % Relative Standard Deviation = 12.3 Number of Observations = 30 Blind Sample ID = 50DW-50115 Mean = 0.65 % Relative Standard Deviation = 107.3 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 1.01 % Relative Standard Deviation = 8.4 Number of Observations = 6 Blind Sample ID = 50DIW-50143 Mean = 2.13 % Relative Standard Deviation = 10.5 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 3.40 % Relative Standard Deviation = 10.8 Number of Observations = 8 Blind Sample ID = 50DIW-50137 Mean = 0.89 % Relative Standard Deviation = 13.4 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 0.32 % Relative Standard Deviation = 33.1 Number of Observations = 24 Blind Sample ID = 50DIW-50133 Mean = 0.14 % Relative Standard Deviation = 35.5 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 0.42 % Relative Standard Deviation = 8.0 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 0.70 % Relative Standard Deviation = 25.5 Number of Observations = 26 Blind Sample ID = 50139-50141 Mean = 0.58 % Relative Standard Deviation = 59.3 Number of Observations = 8 Blind Sample ID = 50137-50139 Mean = 1.79 % Relative Standard Deviation = 32.0 Number of Observations = 23 Blind Sample ID = 50135-50139 Mean = 0.16 % Relative Standard Deviation = 31.8 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 0.79 % Relative Standard Deviation = 30.7 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 0.81 % Relative Standard Deviation = 7.1 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 0.82 % Relative Standard Deviation = 12.0 Number of Observations = 6 Blind Sample ID = 33DW-67123 Mean = 0.80 % Relative Standard Deviation = 81.4 Number of Observations = 46 Blind Sample ID = 33DW-67121 Mean = 2.70 % Relative Standard Deviation = 11.2 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 0.20 % Relative Standard Deviation = 21.0 Number of Observations = 30 Blind Sample ID = 33DW-67105 Mean = 0.29 % Relative Standard Deviation = 10.5 Number of Observations = 30 Blind Sample ID = 33DW-67103 Mean = 1.21 % Relative Standard Deviation = 11.8 Number of Observations = 29 Blind Sample ID = 33DIW-67135 Mean = 1.12 % Relative Standard Deviation = 7.8 Number of Observations = 33 Blind Sample ID = 33DIW-67131 Mean = 2.65 % Relative Standard Deviation = 55.0 Number of Observations = 45 Blind Sample ID = 33DIW-67127 Mean = 0.76 % Relative Standard Deviation = 14.0 Number of Observations = 32 Blind Sample ID = 25DW-75121 Mean = 1.75 % Relative Standard Deviation = 6.2 Number of Observations = 31 Blind Sample ID = 25DW-75105 Mean = 1.58 % Relative Standard Deviation = 53.5 Number of Observations = 24 Blind Sample ID = 25DW-75103 Mean = 0.74 % Relative Standard Deviation = 51.5 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 0.31 % Relative Standard Deviation = 17.3 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 0.98 % Relative Standard Deviation = 45.9 Number of Observations = 16 Blind Sample ID = 25DIW-75147 Mean = 0.56 % Relative Standard Deviation = 51.3 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 0.67 % Relative Standard Deviation = 23.2 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 0.46 % Relative Standard Deviation = 14.6 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 1.30 % Relative Standard Deviation = 5.0 Number of Observations = 4 Blind Sample ID = 25159-75155 Mean = 1.38 % Relative Standard Deviation = 3.9 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 1.18 % Relative Standard Deviation = 5.3 Number of Observations = 3 Blind Sample ID = 25155-75157 Mean = 0.51 % Relative Standard Deviation = 78.4 Number of Observations = 8 Blind Sample ID = 25155-75147 Mean = 0.52 % Relative Standard Deviation = 9.3 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 0.71 % Relative Standard Deviation = 94.0 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 1.05 % Relative Standard Deviation = 12.0 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 2.85 % Relative Standard Deviation = 46.5 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 0.39 % Relative Standard Deviation = 9.8 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 0.13 % Relative Standard Deviation = 36.9 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Mercury, FIL,CVAF -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 71890, MCode: CV014
Dates: 10/15/01 through 09/25/06
Open Data Set

Mean = 0.04 % Relative Standard Deviation = 29.9 Number of Observations = 13 Blind Sample ID = 75179-25DIW Mean = 0.06 % Relative Standard Deviation = 29.1 Number of Observations = 13 Blind Sample ID = 75175-25DIW Mean = 0.03 % Relative Standard Deviation = 9.7 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 0.03 % Relative Standard Deviation = 8.2 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 0.05 % Relative Standard Deviation = 55.6 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 0.05 % Relative Standard Deviation = 11.2 Number of Observations = 15 Blind Sample ID = 50175-50DIW Mean = 0.04 % Relative Standard Deviation = 27.3 Number of Observations = 19 Blind Sample ID = 50175-50173 Mean = 0.05 % Relative Standard Deviation = 10.6 Number of Observations = 20 Blind Sample ID = 50173-50DIW Mean = 0.03 % Relative Standard Deviation = 40.6 Number of Observations = 12 Blind Sample ID = 50171-50DIW Mean = 0.04 % Relative Standard Deviation = 8.6 Number of Observations = 16 Blind Sample ID = 50171-50173 Mean = 0.03 % Relative Standard Deviation = 11.9 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 0.03 % Relative Standard Deviation = 8.4 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 0.02 % Relative Standard Deviation = 13.9 Number of Observations = 6 Blind Sample ID = 50165-50167 Mean = 0.06 % Relative Standard Deviation = 13.2 Number of Observations = 4 Blind Sample ID = 25DIW-75163 Mean = 0.08 % Relative Standard Deviation = 5.6 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 0.08 % Relative Standard Deviation = 6.0 Number of Observations = 23 Blind Sample ID = 25177-75175 Mean = 0.05 % Relative Standard Deviation = 10.8 Number of Observations = 20 Blind Sample ID = 25171-75175
The SGPlot Procedure


- Mercury, UNF,CVAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 71900, MCode: CV016
Dates: 10/03/91 through 03/23/01
Open Data Set

Mean = 1.17 % Relative Standard Deviation = 8.9 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 1.37 % Relative Standard Deviation = 31.6 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 2.27 % Relative Standard Deviation = 46.9 Number of Observations = 34 Blind Sample ID = 67DW-33113 Mean = 0.73 % Relative Standard Deviation = 12.1 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 1.70 % Relative Standard Deviation = 18.1 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 2.68 % Relative Standard Deviation = 8.3 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 1.77 % Relative Standard Deviation = 11.8 Number of Observations = 6 Blind Sample ID = 50DIW-50145 Mean = 0.96 % Relative Standard Deviation = 7.5 Number of Observations = 7 Blind Sample ID = 50DIW-50143 Mean = 1.95 % Relative Standard Deviation = 8.7 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 3.28 % Relative Standard Deviation = 6.0 Number of Observations = 6 Blind Sample ID = 50DIW-50137 Mean = 0.90 % Relative Standard Deviation = 11.1 Number of Observations = 6 Blind Sample ID = 50DIW-50135 Mean = 0.98 % Relative Standard Deviation = 5.8 Number of Observations = 6 Blind Sample ID = 50143-50145 Mean = 3.36 % Relative Standard Deviation = 4.2 Number of Observations = 7 Blind Sample ID = 50139-50145 Mean = 1.96 % Relative Standard Deviation = 4.8 Number of Observations = 6 Blind Sample ID = 50137-50141 Mean = 0.93 % Relative Standard Deviation = 12.7 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 0.42 % Relative Standard Deviation = 35.2 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 0.44 % Relative Standard Deviation = 20.0 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 0.18 % Relative Standard Deviation = 26.5 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 0.66 % Relative Standard Deviation = 20.0 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 0.20 % Relative Standard Deviation = 0.0 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 0.81 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 0.31 % Relative Standard Deviation = 11.3 Number of Observations = 8 Blind Sample ID = 50101-50115 Mean = 0.75 % Relative Standard Deviation = 14.0 Number of Observations = 6 Blind Sample ID = 33DW-67123 Mean = 1.73 % Relative Standard Deviation = 21.7 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 2.69 % Relative Standard Deviation = 10.9 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 1.09 % Relative Standard Deviation = 10.4 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 0.98 % Relative Standard Deviation = 18.8 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 3.06 % Relative Standard Deviation = 20.1 Number of Observations = 23 Blind Sample ID = 25DW-75113 Mean = 1.01 % Relative Standard Deviation = 6.1 Number of Observations = 14 Blind Sample ID = 25DW-75105 Mean = 0.42 % Relative Standard Deviation = 5.4 Number of Observations = 4 Blind Sample ID = 25DIW-75159 Mean = 0.30 % Relative Standard Deviation = 4.3 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 0.96 % Relative Standard Deviation = 34.4 Number of Observations = 12 Blind Sample ID = 25DIW-75147 Mean = 0.48 % Relative Standard Deviation = 59.3 Number of Observations = 15 Blind Sample ID = 25DIW-75143 Mean = 0.54 % Relative Standard Deviation = 39.9 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 0.48 % Relative Standard Deviation = 9.5 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 2.21 % Relative Standard Deviation = 57.1 Number of Observations = 14 Blind Sample ID = 25DIW-75127 Mean = 1.28 % Relative Standard Deviation = 1.6 Number of Observations = 4 Blind Sample ID = 25159-75155 Mean = 1.11 % Relative Standard Deviation = 4.1 Number of Observations = 4 Blind Sample ID = 25155-75157 Mean = 0.21 % Relative Standard Deviation = 23.9 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 0.57 % Relative Standard Deviation = 22.2 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 0.27 % Relative Standard Deviation = 30.0 Number of Observations = 7 Blind Sample ID = 25147-75145 Mean = 0.95 % Relative Standard Deviation = 24.7 Number of Observations = 7 Blind Sample ID = 25145-75147 Mean = 0.44 % Relative Standard Deviation = 48.8 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 0.22 % Relative Standard Deviation = 28.1 Number of Observations = 7 Blind Sample ID = 25139-75137 Mean = 0.33 % Relative Standard Deviation = 33.9 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 0.13 % Relative Standard Deviation = 36.9 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Mercury, UNF,CVAF -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 71900, MCode: CV018
Dates: 10/15/01 through 09/26/06
Open Data Set

Mean = 0.04 % Relative Standard Deviation = 27.8 Number of Observations = 13 Blind Sample ID = 75179-25DIW Mean = 0.06 % Relative Standard Deviation = 28.2 Number of Observations = 13 Blind Sample ID = 75175-25DIW Mean = 0.03 % Relative Standard Deviation = 11.0 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 0.05 % Relative Standard Deviation = 52.4 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 0.05 % Relative Standard Deviation = 9.9 Number of Observations = 14 Blind Sample ID = 50175-50DIW Mean = 0.04 % Relative Standard Deviation = 25.1 Number of Observations = 19 Blind Sample ID = 50175-50173 Mean = 0.05 % Relative Standard Deviation = 10.0 Number of Observations = 20 Blind Sample ID = 50173-50DIW Mean = 0.03 % Relative Standard Deviation = 35.6 Number of Observations = 12 Blind Sample ID = 50171-50DIW Mean = 0.04 % Relative Standard Deviation = 6.7 Number of Observations = 16 Blind Sample ID = 50171-50173 Mean = 0.03 % Relative Standard Deviation = 6.1 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 0.02 % Relative Standard Deviation = 8.0 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 0.08 % Relative Standard Deviation = 6.3 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 0.08 % Relative Standard Deviation = 5.2 Number of Observations = 22 Blind Sample ID = 25177-75175 Mean = 0.05 % Relative Standard Deviation = 11.2 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 0.03 % Relative Standard Deviation = 8.6 Number of Observations = 4 Blind Sample ID = 25169-75167 Mean = 0.02 % Relative Standard Deviation = 6.9 Number of Observations = 5 Blind Sample ID = 25165-75DIW
The SGPlot Procedure


- Molybdenum, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01060, MCode: GF080
Dates: 11/09/94 through 10/04/02
Open Data Set

Mean = 6.63 % Relative Standard Deviation = 6.6 Number of Observations = 8 Blind Sample ID = 75DIW-25155 Mean = 7.67 % Relative Standard Deviation = 6.7 Number of Observations = 8 Blind Sample ID = 75DIW-25151 Mean = 2.50 % Relative Standard Deviation = 31.0 Number of Observations = 5 Blind Sample ID = 75DIW-25137 Mean = 4.79 % Relative Standard Deviation = 4.8 Number of Observations = 4 Blind Sample ID = 50DIW-50145 Mean = 23.00 % Relative Standard Deviation = 7.5 Number of Observations = 18 Blind Sample ID = 50DIW-50133 Mean = 4.45 % Relative Standard Deviation = 22.0 Number of Observations = 17 Blind Sample ID = 50DIW-50123 Mean = 5.98 % Relative Standard Deviation = 9.3 Number of Observations = 8 Blind Sample ID = 50163-50DIW Mean = 9.96 % Relative Standard Deviation = 9.0 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 6.68 % Relative Standard Deviation = 12.9 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 12.62 % Relative Standard Deviation = 5.9 Number of Observations = 5 Blind Sample ID = 50137-50139 Mean = 43.57 % Relative Standard Deviation = 6.8 Number of Observations = 14 Blind Sample ID = 33DIW-67135 Mean = 75.08 % Relative Standard Deviation = 3.3 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 1.13 % Relative Standard Deviation = 25.7 Number of Observations = 24 Blind Sample ID = 33DIW-67127 Mean = 8.70 % Relative Standard Deviation = 16.2 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 31.53 % Relative Standard Deviation = 8.7 Number of Observations = 4 Blind Sample ID = 25DIW-75159 Mean = 7.88 % Relative Standard Deviation = 8.3 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 34.95 % Relative Standard Deviation = 5.0 Number of Observations = 4 Blind Sample ID = 25157-75159
The SGPlot Procedure


- Molybdenum, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01060, MCode: PLM43
Dates: 02/07/94 through 09/19/06
Open Data Set

Mean = 7.06 % Relative Standard Deviation = 4.1 Number of Observations = 34 Blind Sample ID = GT3 Mean = 6.59 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 3.94 % Relative Standard Deviation = 3.6 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 2.28 % Relative Standard Deviation = 2.4 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 5.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 1.68 % Relative Standard Deviation = 4.2 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 1.32 % Relative Standard Deviation = 5.0 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 53.71 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 4.56 % Relative Standard Deviation = 2.4 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 18.63 % Relative Standard Deviation = 1.4 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 31.94 % Relative Standard Deviation = 2.3 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 3.11 % Relative Standard Deviation = 10.7 Number of Observations = 23 Blind Sample ID = 50177-50179 Mean = 0.90 % Relative Standard Deviation = 4.2 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 4.61 % Relative Standard Deviation = 2.6 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 3.72 % Relative Standard Deviation = 3.0 Number of Observations = 28 Blind Sample ID = 50173-50DIW Mean = 1.00 % Relative Standard Deviation = 7.2 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 4.70 % Relative Standard Deviation = 4.4 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 10.15 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 11.04 % Relative Standard Deviation = 3.1 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 6.17 % Relative Standard Deviation = 5.4 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 9.36 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 6.82 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 12.31 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 34.20 % Relative Standard Deviation = 2.2 Number of Observations = 27 Blind Sample ID = 50143-50151 Mean = 23.02 % Relative Standard Deviation = 1.8 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 36.27 % Relative Standard Deviation = 2.5 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 33.73 % Relative Standard Deviation = 2.4 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 14.06 % Relative Standard Deviation = 3.6 Number of Observations = 31 Blind Sample ID = 50125-50123 Mean = 3.63 % Relative Standard Deviation = 4.0 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 2.34 % Relative Standard Deviation = 9.6 Number of Observations = 28 Blind Sample ID = 25177-75175 Mean = 1.81 % Relative Standard Deviation = 3.4 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 33.21 % Relative Standard Deviation = 2.8 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 59.02 % Relative Standard Deviation = 2.1 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 18.98 % Relative Standard Deviation = 2.1 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 35.64 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 35.23 % Relative Standard Deviation = 2.9 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 126.93 % Relative Standard Deviation = 3.9 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 27.30 % Relative Standard Deviation = 3.2 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 11.40 % Relative Standard Deviation = 2.6 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 5.46 % Relative Standard Deviation = 9.2 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 30.88 % Relative Standard Deviation = 3.5 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Molybdenum, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01060, MCode: PLA11
Dates: 10/02/91 through 10/01/02
Open Data Set

Mean = 12.35 % Relative Standard Deviation = 35.4 Number of Observations = 17 Blind Sample ID = 67DW-33113 Mean = 31.35 % Relative Standard Deviation = 17.2 Number of Observations = 9 Blind Sample ID = 50143-50151 Mean = 18.25 % Relative Standard Deviation = 67.5 Number of Observations = 5 Blind Sample ID = 50143-50145 Mean = 13.76 % Relative Standard Deviation = 36.9 Number of Observations = 4 Blind Sample ID = 50139-50145 Mean = 10.05 % Relative Standard Deviation = 2.8 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 36.15 % Relative Standard Deviation = 22.2 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 69.17 % Relative Standard Deviation = 13.6 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 42.40 % Relative Standard Deviation = 17.1 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 10.83 % Relative Standard Deviation = 26.1 Number of Observations = 24 Blind Sample ID = 50123-50121 Mean = 13.33 % Relative Standard Deviation = 42.3 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 17.27 % Relative Standard Deviation = 28.9 Number of Observations = 44 Blind Sample ID = 50121-50105 Mean = 39.57 % Relative Standard Deviation = 9.1 Number of Observations = 47 Blind Sample ID = 50115-50103 Mean = 15.63 % Relative Standard Deviation = 32.1 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 40.87 % Relative Standard Deviation = 8.7 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 10.87 % Relative Standard Deviation = 26.5 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 23.11 % Relative Standard Deviation = 11.9 Number of Observations = 12 Blind Sample ID = 25DIW-75151 Mean = 47.06 % Relative Standard Deviation = 12.5 Number of Observations = 17 Blind Sample ID = 25DIW-75135 Mean = 85.56 % Relative Standard Deviation = 10.8 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 33.56 % Relative Standard Deviation = 8.5 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 32.94 % Relative Standard Deviation = 12.1 Number of Observations = 11 Blind Sample ID = 25157-75159 Mean = 121.90 % Relative Standard Deviation = 7.5 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 21.95 % Relative Standard Deviation = 13.0 Number of Observations = 5 Blind Sample ID = 25155-75147 Mean = 13.96 % Relative Standard Deviation = 36.4 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 13.73 % Relative Standard Deviation = 44.4 Number of Observations = 6 Blind Sample ID = 25139-75137 Mean = 14.38 % Relative Standard Deviation = 43.8 Number of Observations = 16 Blind Sample ID = 25133-75127 Mean = 15.71 % Relative Standard Deviation = 44.8 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 10.98 % Relative Standard Deviation = 27.4 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 29.35 % Relative Standard Deviation = 23.2 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 10.42 % Relative Standard Deviation = 19.6 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 27.80 % Relative Standard Deviation = 17.1 Number of Observations = 41 Blind Sample ID = 25117-75113 Mean = 34.87 % Relative Standard Deviation = 14.5 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 82.00 % Relative Standard Deviation = 49.8 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Molybdenum, FIL,CXAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01060, MCode: CX009
Dates: 10/10/91 through 10/27/94
Open Data Set

Mean = 3.91 % Relative Standard Deviation = 38.1 Number of Observations = 32 Blind Sample ID = 50DW-50123 Mean = 5.66 % Relative Standard Deviation = 24.0 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 23.19 % Relative Standard Deviation = 6.9 Number of Observations = 31 Blind Sample ID = 50DW-50115 Mean = 7.91 % Relative Standard Deviation = 13.4 Number of Observations = 32 Blind Sample ID = 33DW-67121 Mean = 14.17 % Relative Standard Deviation = 8.9 Number of Observations = 30 Blind Sample ID = 33DW-67105 Mean = 24.30 % Relative Standard Deviation = 7.6 Number of Observations = 30 Blind Sample ID = 33DW-67103 Mean = 1.75 % Relative Standard Deviation = 85.7 Number of Observations = 4 Blind Sample ID = 33DIW-67127 Mean = 8.79 % Relative Standard Deviation = 15.0 Number of Observations = 33 Blind Sample ID = 25DW-75121 Mean = 17.03 % Relative Standard Deviation = 9.2 Number of Observations = 31 Blind Sample ID = 25DW-75105 Mean = 27.28 % Relative Standard Deviation = 11.6 Number of Observations = 32 Blind Sample ID = 25DW-75103
The SGPlot Procedure


- Molybdenum, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01062, MCode: GF095
Dates: 11/07/94 through 10/04/02
Open Data Set

Mean = 6.13 % Relative Standard Deviation = 4.2 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 7.04 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 75DIW-25151 Mean = 4.14 % Relative Standard Deviation = 32.0 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 5.68 % Relative Standard Deviation = 5.4 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 7.91 % Relative Standard Deviation = 15.5 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 6.14 % Relative Standard Deviation = 10.3 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 12.64 % Relative Standard Deviation = 8.8 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 22.63 % Relative Standard Deviation = 5.1 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 11.30 % Relative Standard Deviation = 8.1 Number of Observations = 7 Blind Sample ID = 50139-50145 Mean = 32.23 % Relative Standard Deviation = 7.0 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 13.62 % Relative Standard Deviation = 8.8 Number of Observations = 13 Blind Sample ID = 50125-50123 Mean = 7.73 % Relative Standard Deviation = 7.1 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 1.08 % Relative Standard Deviation = 23.7 Number of Observations = 16 Blind Sample ID = 25DIW-75127 Mean = 31.06 % Relative Standard Deviation = 3.5 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 28.89 % Relative Standard Deviation = 6.4 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 13.09 % Relative Standard Deviation = 7.1 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 8.83 % Relative Standard Deviation = 5.5 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 9.60 % Relative Standard Deviation = 10.1 Number of Observations = 8 Blind Sample ID = 25139-75137
The SGPlot Procedure


- Molybdenum, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01062, MCode: PLM48
Dates: 10/26/05 through 09/19/06
Open Data Set

Mean = 1.64 % Relative Standard Deviation = 1.4 Number of Observations = 9 Blind Sample ID = 75179-25DIW Mean = 1.35 % Relative Standard Deviation = 1.8 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 3.25 % Relative Standard Deviation = 1.6 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 0.91 % Relative Standard Deviation = 1.9 Number of Observations = 15 Blind Sample ID = 50175-50DIW Mean = 3.69 % Relative Standard Deviation = 2.5 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 2.37 % Relative Standard Deviation = 1.6 Number of Observations = 16 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Molybdenum, UNF,CXAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01062, MCode: CX018
Dates: 10/10/91 through 10/28/94
Open Data Set

Mean = 9.00 % Relative Standard Deviation = 18.3 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 4.58 % Relative Standard Deviation = 21.7 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 21.33 % Relative Standard Deviation = 3.3 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 12.14 % Relative Standard Deviation = 9.1 Number of Observations = 14 Blind Sample ID = 50125-50123 Mean = 11.00 % Relative Standard Deviation = 16.6 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 40.18 % Relative Standard Deviation = 8.3 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 21.33 % Relative Standard Deviation = 10.3 Number of Observations = 24 Blind Sample ID = 25DW-75113 Mean = 14.64 % Relative Standard Deviation = 5.7 Number of Observations = 14 Blind Sample ID = 25DW-75105
The SGPlot Procedure


- Monomethylarsonate (MMA), IC-ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 62454, MCode: PLM35
Dates: 10/31/03 through 09/12/06
Open Data Set

Mean = 12.64 % Relative Standard Deviation = 4.5 Number of Observations = 46 Blind Sample ID = AS4 Mean = 25.10 % Relative Standard Deviation = 4.0 Number of Observations = 23 Blind Sample ID = AS1
The SGPlot Procedure


- Nickel, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01065, MCode: GF090
Dates: 10/03/91 through 11/14/02
Open Data Set

Mean = 2.34 % Relative Standard Deviation = 13.3 Number of Observations = 8 Blind Sample ID = 75DIW-25155 Mean = 2.86 % Relative Standard Deviation = 40.2 Number of Observations = 8 Blind Sample ID = 75DIW-25151 Mean = 3.40 % Relative Standard Deviation = 12.1 Number of Observations = 22 Blind Sample ID = 75DIW-25139 Mean = 4.20 % Relative Standard Deviation = 9.2 Number of Observations = 5 Blind Sample ID = 75DIW-25137 Mean = 1.13 % Relative Standard Deviation = 30.0 Number of Observations = 24 Blind Sample ID = 67DW-33113 Mean = 2.06 % Relative Standard Deviation = 21.1 Number of Observations = 32 Blind Sample ID = 50DW-50123 Mean = 4.44 % Relative Standard Deviation = 15.1 Number of Observations = 32 Blind Sample ID = 50DW-50121 Mean = 8.97 % Relative Standard Deviation = 8.9 Number of Observations = 31 Blind Sample ID = 50DW-50115 Mean = 5.45 % Relative Standard Deviation = 8.0 Number of Observations = 4 Blind Sample ID = 50DIW-50145 Mean = 37.63 % Relative Standard Deviation = 3.0 Number of Observations = 6 Blind Sample ID = 50DIW-50143 Mean = 6.96 % Relative Standard Deviation = 1.6 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 7.90 % Relative Standard Deviation = 3.7 Number of Observations = 4 Blind Sample ID = 50DIW-50137 Mean = 33.01 % Relative Standard Deviation = 8.0 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 14.42 % Relative Standard Deviation = 6.8 Number of Observations = 24 Blind Sample ID = 50DIW-50133 Mean = 2.42 % Relative Standard Deviation = 20.8 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 7.22 % Relative Standard Deviation = 11.9 Number of Observations = 8 Blind Sample ID = 50163-50DIW Mean = 14.31 % Relative Standard Deviation = 4.7 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 16.26 % Relative Standard Deviation = 5.2 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 16.11 % Relative Standard Deviation = 5.2 Number of Observations = 26 Blind Sample ID = 50139-50141 Mean = 14.90 % Relative Standard Deviation = 3.3 Number of Observations = 5 Blind Sample ID = 50137-50139 Mean = 40.53 % Relative Standard Deviation = 7.7 Number of Observations = 23 Blind Sample ID = 50135-50139 Mean = 6.50 % Relative Standard Deviation = 8.2 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 13.13 % Relative Standard Deviation = 4.7 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 12.25 % Relative Standard Deviation = 5.6 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 3.00 % Relative Standard Deviation = 17.8 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 5.96 % Relative Standard Deviation = 10.6 Number of Observations = 46 Blind Sample ID = 33DW-67121 Mean = 11.35 % Relative Standard Deviation = 14.3 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 11.57 % Relative Standard Deviation = 9.8 Number of Observations = 30 Blind Sample ID = 33DW-67105 Mean = 4.60 % Relative Standard Deviation = 14.7 Number of Observations = 30 Blind Sample ID = 33DW-67103 Mean = 44.76 % Relative Standard Deviation = 5.8 Number of Observations = 29 Blind Sample ID = 33DIW-67135 Mean = 40.17 % Relative Standard Deviation = 10.3 Number of Observations = 36 Blind Sample ID = 33DIW-67131 Mean = 6.02 % Relative Standard Deviation = 9.7 Number of Observations = 45 Blind Sample ID = 33DIW-67127 Mean = 6.94 % Relative Standard Deviation = 6.2 Number of Observations = 33 Blind Sample ID = 25DW-75121 Mean = 13.52 % Relative Standard Deviation = 5.7 Number of Observations = 31 Blind Sample ID = 25DW-75105 Mean = 4.84 % Relative Standard Deviation = 10.6 Number of Observations = 32 Blind Sample ID = 25DW-75103 Mean = 12.28 % Relative Standard Deviation = 15.0 Number of Observations = 16 Blind Sample ID = 25DIW-75163 Mean = 17.18 % Relative Standard Deviation = 5.0 Number of Observations = 6 Blind Sample ID = 25DIW-75159 Mean = 10.82 % Relative Standard Deviation = 2.1 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 50.96 % Relative Standard Deviation = 2.7 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 44.25 % Relative Standard Deviation = 4.8 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 22.44 % Relative Standard Deviation = 15.9 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 26.70 % Relative Standard Deviation = 15.5 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 24.74 % Relative Standard Deviation = 6.9 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 13.86 % Relative Standard Deviation = 2.7 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 7.83 % Relative Standard Deviation = 9.2 Number of Observations = 12 Blind Sample ID = 25123-75127 Mean = 34.67 % Relative Standard Deviation = 46.6 Number of Observations = 3 Blind Sample ID =
The SGPlot Procedure


- Nickel, FIL, GFAA, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01065, MCode: GF081
Dates: 10/08/91 through 09/30/92
Open Data Set

Mean = 2.63 % Relative Standard Deviation = 76.0 Number of Observations = 8 Blind Sample ID = 75DW-25103 Mean = 4.38 % Relative Standard Deviation = 32.2 Number of Observations = 8 Blind Sample ID = 50DW-50103 Mean = 6.63 % Relative Standard Deviation = 22.7 Number of Observations = 8 Blind Sample ID = 25DW-75103
The SGPlot Procedure


- Nickel, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01065, MCode: PLM43
Dates: 02/07/94 through 07/19/06
Open Data Set

Mean = 36.36 % Relative Standard Deviation = 3.9 Number of Observations = 34 Blind Sample ID = GT3 Mean = 2.17 % Relative Standard Deviation = 11.5 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 3.43 % Relative Standard Deviation = 12.5 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 4.02 % Relative Standard Deviation = 4.3 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 2.94 % Relative Standard Deviation = 15.1 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 1.46 % Relative Standard Deviation = 20.0 Number of Observations = 16 Blind Sample ID = 75179-25DIW Mean = 2.60 % Relative Standard Deviation = 5.9 Number of Observations = 12 Blind Sample ID = 75175-25DIW Mean = 7.90 % Relative Standard Deviation = 3.6 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 5.60 % Relative Standard Deviation = 3.5 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 35.16 % Relative Standard Deviation = 2.1 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 32.58 % Relative Standard Deviation = 4.3 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 2.65 % Relative Standard Deviation = 9.4 Number of Observations = 10 Blind Sample ID = 50177-50179 Mean = 1.74 % Relative Standard Deviation = 8.4 Number of Observations = 35 Blind Sample ID = 50175-50DIW Mean = 4.65 % Relative Standard Deviation = 5.8 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 2.88 % Relative Standard Deviation = 10.1 Number of Observations = 23 Blind Sample ID = 50173-50DIW Mean = 2.89 % Relative Standard Deviation = 5.9 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 5.90 % Relative Standard Deviation = 6.4 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 6.09 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 8.90 % Relative Standard Deviation = 3.6 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 7.66 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 14.72 % Relative Standard Deviation = 3.1 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 15.29 % Relative Standard Deviation = 4.1 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 3.89 % Relative Standard Deviation = 8.5 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 39.67 % Relative Standard Deviation = 2.5 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 39.63 % Relative Standard Deviation = 2.6 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 39.80 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 19.33 % Relative Standard Deviation = 3.2 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 7.59 % Relative Standard Deviation = 16.3 Number of Observations = 32 Blind Sample ID = 50125-50123 Mean = 3.65 % Relative Standard Deviation = 15.3 Number of Observations = 11 Blind Sample ID = 25179-75177 Mean = 3.60 % Relative Standard Deviation = 5.7 Number of Observations = 16 Blind Sample ID = 25177-75175 Mean = 3.95 % Relative Standard Deviation = 5.4 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 11.59 % Relative Standard Deviation = 4.5 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 10.92 % Relative Standard Deviation = 3.7 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 0.51 % Relative Standard Deviation = 25.8 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 24.16 % Relative Standard Deviation = 3.2 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 24.37 % Relative Standard Deviation = 3.4 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 26.12 % Relative Standard Deviation = 2.6 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 8.65 % Relative Standard Deviation = 6.4 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 13.05 % Relative Standard Deviation = 2.6 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 9.26 % Relative Standard Deviation = 8.3 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 4.75 % Relative Standard Deviation = 16.3 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Nickel, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01065, MCode: PLA11
Dates: 10/02/91 through 08/30/05
Open Data Set

Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 17 Blind Sample ID = 67DW-33113 Mean = 1.63 % Relative Standard Deviation = 20.8 Number of Observations = 4 Blind Sample ID = 50175-50DIW Mean = 4.88 % Relative Standard Deviation = 16.2 Number of Observations = 4 Blind Sample ID = 50175-50173 Mean = 3.16 % Relative Standard Deviation = 14.1 Number of Observations = 4 Blind Sample ID = 50173-50DIW Mean = 2.11 % Relative Standard Deviation = 35.1 Number of Observations = 4 Blind Sample ID = 50171-50DIW Mean = 16.28 % Relative Standard Deviation = 11.9 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 39.55 % Relative Standard Deviation = 18.0 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 45.60 % Relative Standard Deviation = 14.7 Number of Observations = 15 Blind Sample ID = 50143-50145 Mean = 15.31 % Relative Standard Deviation = 22.4 Number of Observations = 4 Blind Sample ID = 50139-50145 Mean = 16.17 % Relative Standard Deviation = 33.8 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 41.67 % Relative Standard Deviation = 17.5 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 33.75 % Relative Standard Deviation = 23.4 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 39.20 % Relative Standard Deviation = 12.6 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 10.42 % Relative Standard Deviation = 19.6 Number of Observations = 24 Blind Sample ID = 50123-50121 Mean = 10.42 % Relative Standard Deviation = 19.6 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 11.59 % Relative Standard Deviation = 31.9 Number of Observations = 44 Blind Sample ID = 50121-50105 Mean = 12.34 % Relative Standard Deviation = 34.7 Number of Observations = 47 Blind Sample ID = 50115-50103 Mean = 12.92 % Relative Standard Deviation = 35.6 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 19.35 % Relative Standard Deviation = 16.9 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 21.61 % Relative Standard Deviation = 7.8 Number of Observations = 3 Blind Sample ID = 25DIW-75151 Mean = 50.00 % Relative Standard Deviation = 10.0 Number of Observations = 17 Blind Sample ID = 25DIW-75135 Mean = 43.33 % Relative Standard Deviation = 19.4 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 3.55 % Relative Standard Deviation = 10.8 Number of Observations = 8 Blind Sample ID = 25171-75175 Mean = 25.58 % Relative Standard Deviation = 16.2 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 29.52 % Relative Standard Deviation = 13.3 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 30.96 % Relative Standard Deviation = 17.0 Number of Observations = 10 Blind Sample ID = 25155-75153 Mean = 24.92 % Relative Standard Deviation = 18.3 Number of Observations = 5 Blind Sample ID = 25147-75145 Mean = 16.26 % Relative Standard Deviation = 28.0 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 18.81 % Relative Standard Deviation = 58.1 Number of Observations = 6 Blind Sample ID = 25139-75137 Mean = 13.75 % Relative Standard Deviation = 36.4 Number of Observations = 16 Blind Sample ID = 25133-75127 Mean = 11.67 % Relative Standard Deviation = 32.3 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 11.95 % Relative Standard Deviation = 38.4 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 10.00 % Relative Standard Deviation = 0.0 Number of Observations = 40 Blind Sample ID = 25117-75113 Mean = 40.00 % Relative Standard Deviation = 30.6 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Nickel, FIL, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01065, MCode: PLM10
Dates: 11/15/05 through 09/15/06
Open Data Set

Mean = 0.75 % Relative Standard Deviation = 4.7 Number of Observations = 3 Blind Sample ID = 75179-25DIW Mean = 2.31 % Relative Standard Deviation = 7.7 Number of Observations = 3 Blind Sample ID = 75175-25DIW Mean = 2.22 % Relative Standard Deviation = 2.6 Number of Observations = 4 Blind Sample ID = 50177-50179 Mean = 1.56 % Relative Standard Deviation = 3.9 Number of Observations = 4 Blind Sample ID = 50175-50DIW Mean = 2.34 % Relative Standard Deviation = 2.2 Number of Observations = 4 Blind Sample ID = 50173-50DIW Mean = 2.71 % Relative Standard Deviation = 2.9 Number of Observations = 9 Blind Sample ID = 25179-75177 Mean = 3.10 % Relative Standard Deviation = 6.2 Number of Observations = 5 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Nickel, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01067, MCode: GF101
Dates: 10/03/91 through 10/20/04
Open Data Set

Mean = 2.28 % Relative Standard Deviation = 16.9 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 2.73 % Relative Standard Deviation = 16.8 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 7.92 % Relative Standard Deviation = 13.3 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 1.21 % Relative Standard Deviation = 34.3 Number of Observations = 24 Blind Sample ID = 67DW-33113 Mean = 6.25 % Relative Standard Deviation = 7.2 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 5.08 % Relative Standard Deviation = 27.1 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 15.33 % Relative Standard Deviation = 6.5 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 5.94 % Relative Standard Deviation = 4.7 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 37.50 % Relative Standard Deviation = 2.6 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 6.78 % Relative Standard Deviation = 3.4 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 8.21 % Relative Standard Deviation = 4.0 Number of Observations = 8 Blind Sample ID = 50DIW-50137 Mean = 33.03 % Relative Standard Deviation = 6.8 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 3.40 % Relative Standard Deviation = 22.8 Number of Observations = 15 Blind Sample ID = 50171-50DIW Mean = 9.02 % Relative Standard Deviation = 8.8 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 5.61 % Relative Standard Deviation = 7.7 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 6.83 % Relative Standard Deviation = 15.8 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 7.97 % Relative Standard Deviation = 15.4 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 14.71 % Relative Standard Deviation = 5.1 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 15.27 % Relative Standard Deviation = 6.5 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 3.86 % Relative Standard Deviation = 11.2 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 42.73 % Relative Standard Deviation = 3.4 Number of Observations = 7 Blind Sample ID = 50143-50145 Mean = 12.54 % Relative Standard Deviation = 2.6 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 16.26 % Relative Standard Deviation = 3.1 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 40.91 % Relative Standard Deviation = 6.6 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 19.54 % Relative Standard Deviation = 5.4 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 8.43 % Relative Standard Deviation = 7.5 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 7.13 % Relative Standard Deviation = 9.0 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 13.81 % Relative Standard Deviation = 9.6 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 9.30 % Relative Standard Deviation = 7.3 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 12.44 % Relative Standard Deviation = 8.3 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 25.64 % Relative Standard Deviation = 10.2 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 3.00 % Relative Standard Deviation = 0.0 Number of Observations = 7 Blind Sample ID = 33DW-67123 Mean = 6.79 % Relative Standard Deviation = 27.8 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 11.24 % Relative Standard Deviation = 14.6 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 43.25 % Relative Standard Deviation = 3.9 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 41.83 % Relative Standard Deviation = 18.3 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 2.25 % Relative Standard Deviation = 30.0 Number of Observations = 24 Blind Sample ID = 25DW-75113 Mean = 13.29 % Relative Standard Deviation = 6.2 Number of Observations = 14 Blind Sample ID = 25DW-75105 Mean = 16.18 % Relative Standard Deviation = 6.5 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 24.26 % Relative Standard Deviation = 6.3 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 10.30 % Relative Standard Deviation = 8.1 Number of Observations = 12 Blind Sample ID = 25DIW-75147 Mean = 55.05 % Relative Standard Deviation = 5.1 Number of Observations = 15 Blind Sample ID = 25DIW-75143 Mean = 49.68 % Relative Standard Deviation = 2.8 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 43.18 % Relative Standard Deviation = 5.5 Number of Observations = 11 Blind Sample ID = 25DIW-75131 Mean = 7.00 % Relative Standard Deviation = 7.4 Number of Observations = 16 Blind Sample ID = 25DIW-75127 Mean = 11.45 % Relative Standard Deviation = 6.4 Number of Observations = 16 Blind Sample ID = 25169-75167 Mean = 23.61 % Relative Standard Deviation = 6.0 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 11.15 % Relative Standard Deviation = 8.7 Number of Observations = 6 Blind Sample ID = 25159-75155 Mean = 24.05 % Relative Standard Deviation = 4.4 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 24.34 % Relative Standard Deviation = 6.3 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 11.30 % Relative Standard Deviation = 4.0 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 8.43 % Relative Standard Deviation = 4.1 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 11.64 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 12.28 % Relative Standard Deviation = 10.2 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 14.44 % Relative Standard Deviation = 4.0 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 15.34 % Relative Standard Deviation = 6.4 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 13.86 % Relative Standard Deviation = 5.0 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 8.17 % Relative Standard Deviation = 7.1 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Nickel, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01067, MCode: PLM48
Dates: 11/08/02 through 09/19/06
Open Data Set

Mean = 1.04 % Relative Standard Deviation = 15.0 Number of Observations = 5 Blind Sample ID = 75179-25DIW Mean = 2.41 % Relative Standard Deviation = 5.8 Number of Observations = 7 Blind Sample ID = 75175-25DIW Mean = 4.21 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 8.42 % Relative Standard Deviation = 5.8 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 2.52 % Relative Standard Deviation = 7.0 Number of Observations = 8 Blind Sample ID = 50177-50179 Mean = 1.64 % Relative Standard Deviation = 5.5 Number of Observations = 13 Blind Sample ID = 50175-50DIW Mean = 4.29 % Relative Standard Deviation = 3.9 Number of Observations = 12 Blind Sample ID = 50175-50173 Mean = 2.74 % Relative Standard Deviation = 13.9 Number of Observations = 13 Blind Sample ID = 50173-50DIW Mean = 2.87 % Relative Standard Deviation = 3.4 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 5.43 % Relative Standard Deviation = 3.8 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 6.06 % Relative Standard Deviation = 3.4 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 8.53 % Relative Standard Deviation = 1.4 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 3.01 % Relative Standard Deviation = 9.0 Number of Observations = 8 Blind Sample ID = 25179-75177 Mean = 3.32 % Relative Standard Deviation = 5.1 Number of Observations = 8 Blind Sample ID = 25177-75175 Mean = 3.84 % Relative Standard Deviation = 3.7 Number of Observations = 8 Blind Sample ID = 25171-75175 Mean = 0.55 % Relative Standard Deviation = 20.3 Number of Observations = 8 Blind Sample ID = 25165-75DIW
The SGPlot Procedure


- Selenium, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01145, MCode: GF091
Dates: 10/05/98 through 08/24/05
Open Data Set

Mean = 11.53 % Relative Standard Deviation = 10.6 Number of Observations = 34 Blind Sample ID = GT3 Mean = 2.35 % Relative Standard Deviation = 25.6 Number of Observations = 24 Blind Sample ID = 75DIW-25155 Mean = 2.16 % Relative Standard Deviation = 28.8 Number of Observations = 17 Blind Sample ID = 75169-25DIW Mean = 5.47 % Relative Standard Deviation = 9.9 Number of Observations = 36 Blind Sample ID = 50DIW-50145 Mean = 1.54 % Relative Standard Deviation = 14.7 Number of Observations = 9 Blind Sample ID = 50175-50173 Mean = 1.69 % Relative Standard Deviation = 14.5 Number of Observations = 9 Blind Sample ID = 50171-50173 Mean = 2.00 % Relative Standard Deviation = 19.4 Number of Observations = 7 Blind Sample ID = 50167-50DIW Mean = 2.31 % Relative Standard Deviation = 19.0 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 5.11 % Relative Standard Deviation = 10.6 Number of Observations = 11 Blind Sample ID = 50165-50169 Mean = 5.34 % Relative Standard Deviation = 17.3 Number of Observations = 12 Blind Sample ID = 50165-50167 Mean = 4.88 % Relative Standard Deviation = 18.0 Number of Observations = 8 Blind Sample ID = 50163-50DIW Mean = 5.02 % Relative Standard Deviation = 14.0 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 2.31 % Relative Standard Deviation = 18.0 Number of Observations = 31 Blind Sample ID = 50157-50DIW Mean = 4.17 % Relative Standard Deviation = 9.7 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 6.12 % Relative Standard Deviation = 11.6 Number of Observations = 4 Blind Sample ID = 50147-50151 Mean = 10.48 % Relative Standard Deviation = 5.9 Number of Observations = 4 Blind Sample ID = 50145-50147 Mean = 4.91 % Relative Standard Deviation = 13.2 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 6.98 % Relative Standard Deviation = 15.5 Number of Observations = 19 Blind Sample ID = 25DIW-75163 Mean = 4.13 % Relative Standard Deviation = 8.8 Number of Observations = 20 Blind Sample ID = 25DIW-75159 Mean = 7.56 % Relative Standard Deviation = 10.9 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 8.46 % Relative Standard Deviation = 5.9 Number of Observations = 16 Blind Sample ID = 25DIW-75147 Mean = 7.69 % Relative Standard Deviation = 7.7 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 1.63 % Relative Standard Deviation = 16.4 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 3.32 % Relative Standard Deviation = 14.1 Number of Observations = 16 Blind Sample ID = 25169-75167 Mean = 2.13 % Relative Standard Deviation = 23.8 Number of Observations = 7 Blind Sample ID = 25165-75DIW Mean = 6.16 % Relative Standard Deviation = 9.1 Number of Observations = 12 Blind Sample ID = 25163-75159 Mean = 9.00 % Relative Standard Deviation = 8.1 Number of Observations = 12 Blind Sample ID = 25159-75161 Mean = 7.93 % Relative Standard Deviation = 8.1 Number of Observations = 11 Blind Sample ID = 25159-75155 Mean = 5.04 % Relative Standard Deviation = 12.7 Number of Observations = 31 Blind Sample ID = 25157-75159 Mean = 5.50 % Relative Standard Deviation = 12.5 Number of Observations = 12 Blind Sample ID = 25155-75157 Mean = 9.64 % Relative Standard Deviation = 8.2 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 2.36 % Relative Standard Deviation = 14.7 Number of Observations = 4 Blind Sample ID = 25155-75151 Mean = 10.62 % Relative Standard Deviation = 6.3 Number of Observations = 8 Blind Sample ID = 25155-75147 Mean = 6.52 % Relative Standard Deviation = 8.3 Number of Observations = 28 Blind Sample ID = 25151-75155 Mean = 7.04 % Relative Standard Deviation = 6.2 Number of Observations = 4 Blind Sample ID = 25151-75153 Mean = 9.02 % Relative Standard Deviation = 6.1 Number of Observations = 4 Blind Sample ID = 25151-75147 Mean = 7.43 % Relative Standard Deviation = 6.2 Number of Observations = 4 Blind Sample ID = 25151-75143 Mean = 10.23 % Relative Standard Deviation = 4.0 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 10.71 % Relative Standard Deviation = 9.1 Number of Observations = 34 Blind Sample ID = 25145-75147
The SGPlot Procedure


- Selenium, FIL, Hydride, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01145, MCode: HY011
Dates: 10/03/91 through 09/30/98
Open Data Set

Mean = 1.18 % Relative Standard Deviation = 25.3 Number of Observations = 22 Blind Sample ID = 75DIW-25139 Mean = 6.59 % Relative Standard Deviation = 24.5 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 4.88 % Relative Standard Deviation = 10.3 Number of Observations = 16 Blind Sample ID = 50DW-50125 Mean = 2.75 % Relative Standard Deviation = 16.3 Number of Observations = 16 Blind Sample ID = 50DW-50117 Mean = 4.59 % Relative Standard Deviation = 12.5 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 2.33 % Relative Standard Deviation = 20.9 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 4.19 % Relative Standard Deviation = 36.1 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 10.46 % Relative Standard Deviation = 10.2 Number of Observations = 24 Blind Sample ID = 50DIW-50133 Mean = 2.75 % Relative Standard Deviation = 19.3 Number of Observations = 24 Blind Sample ID = 50DIW-50123 Mean = 9.95 % Relative Standard Deviation = 9.6 Number of Observations = 18 Blind Sample ID = 50143-50145 Mean = 7.58 % Relative Standard Deviation = 9.7 Number of Observations = 21 Blind Sample ID = 50139-50145 Mean = 6.22 % Relative Standard Deviation = 16.2 Number of Observations = 50 Blind Sample ID = 50139-50141 Mean = 4.83 % Relative Standard Deviation = 11.4 Number of Observations = 4 Blind Sample ID = 50137-50143 Mean = 2.54 % Relative Standard Deviation = 9.9 Number of Observations = 12 Blind Sample ID = 50137-50139 Mean = 7.06 % Relative Standard Deviation = 12.0 Number of Observations = 47 Blind Sample ID = 50135-50139 Mean = 13.64 % Relative Standard Deviation = 14.0 Number of Observations = 14 Blind Sample ID = 50125-50133 Mean = 7.10 % Relative Standard Deviation = 16.8 Number of Observations = 40 Blind Sample ID = 50125-50123 Mean = 6.00 % Relative Standard Deviation = 15.4 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 7.00 % Relative Standard Deviation = 9.0 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 7.69 % Relative Standard Deviation = 8.2 Number of Observations = 13 Blind Sample ID = 50117-50121 Mean = 3.44 % Relative Standard Deviation = 30.0 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 15.80 % Relative Standard Deviation = 17.3 Number of Observations = 15 Blind Sample ID = 50107-50113 Mean = 9.50 % Relative Standard Deviation = 26.1 Number of Observations = 16 Blind Sample ID = 50101-50107 Mean = 3.63 % Relative Standard Deviation = 14.3 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 6.07 % Relative Standard Deviation = 12.0 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 2.59 % Relative Standard Deviation = 38.8 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 6.83 % Relative Standard Deviation = 12.4 Number of Observations = 29 Blind Sample ID = 33DIW-67135 Mean = 5.29 % Relative Standard Deviation = 54.7 Number of Observations = 34 Blind Sample ID = 33DIW-67131 Mean = 4.51 % Relative Standard Deviation = 17.4 Number of Observations = 45 Blind Sample ID = 33DIW-67127 Mean = 15.19 % Relative Standard Deviation = 11.5 Number of Observations = 32 Blind Sample ID = 25DW-75113 Mean = 7.58 % Relative Standard Deviation = 9.7 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 1.38 % Relative Standard Deviation = 10.9 Number of Observations = 4 Blind Sample ID = 25DIW-75136 Mean = 6.97 % Relative Standard Deviation = 9.8 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 8.44 % Relative Standard Deviation = 13.4 Number of Observations = 9 Blind Sample ID = 25DIW-75131 Mean = 4.90 % Relative Standard Deviation = 22.8 Number of Observations = 20 Blind Sample ID = 25DIW-75127 Mean = 10.25 % Relative Standard Deviation = 7.5 Number of Observations = 4 Blind Sample ID = 25145-75143 Mean = 1.34 % Relative Standard Deviation = 15.0 Number of Observations = 31 Blind Sample ID = 25139-75137 Mean = 7.38 % Relative Standard Deviation = 11.4 Number of Observations = 21 Blind Sample ID = 25137-75135 Mean = 9.43 % Relative Standard Deviation = 13.5 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 5.92 % Relative Standard Deviation = 33.4 Number of Observations = 12 Blind Sample ID = 25123-75127 Mean = 7.20 % Relative Standard Deviation = 23.0 Number of Observations = 15 Blind Sample ID = 25107-75105
The SGPlot Procedure


- Selenium, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01145, MCode: PLM40
Dates: 10/10/01 through 10/06/05
Open Data Set

Mean = 2.06 % Relative Standard Deviation = 5.7 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 0.91 % Relative Standard Deviation = 18.9 Number of Observations = 22 Blind Sample ID = 50175-50DIW Mean = 2.08 % Relative Standard Deviation = 6.2 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 1.09 % Relative Standard Deviation = 9.2 Number of Observations = 23 Blind Sample ID = 50173-50DIW Mean = 0.66 % Relative Standard Deviation = 14.1 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 1.80 % Relative Standard Deviation = 6.9 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 1.83 % Relative Standard Deviation = 8.4 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 2.42 % Relative Standard Deviation = 5.1 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 4.57 % Relative Standard Deviation = 7.4 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 4.67 % Relative Standard Deviation = 5.5 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 1.85 % Relative Standard Deviation = 6.4 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 3.42 % Relative Standard Deviation = 6.7 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 3.03 % Relative Standard Deviation = 6.7 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 1.95 % Relative Standard Deviation = 10.5 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 6.36 % Relative Standard Deviation = 6.6 Number of Observations = 24 Blind Sample ID = 25161-75159
The SGPlot Procedure


- Selenium, FIL, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01145, MCode: PLM10
Dates: 09/09/05 through 09/19/06
Open Data Set

Mean = 0.78 % Relative Standard Deviation = 5.3 Number of Observations = 19 Blind Sample ID = 75179-25DIW Mean = 1.38 % Relative Standard Deviation = 8.1 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 1.02 % Relative Standard Deviation = 6.3 Number of Observations = 15 Blind Sample ID = 50177-50179 Mean = 1.05 % Relative Standard Deviation = 42.1 Number of Observations = 22 Blind Sample ID = 50175-50DIW Mean = 1.03 % Relative Standard Deviation = 5.2 Number of Observations = 6 Blind Sample ID = 50173-50DIW Mean = 1.02 % Relative Standard Deviation = 6.0 Number of Observations = 20 Blind Sample ID = 25179-75177 Mean = 1.66 % Relative Standard Deviation = 6.4 Number of Observations = 21 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Selenium, UNF, EPA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01147, MCode: GF031
Dates: 10/30/97 through 09/18/00
Open Data Set

Mean = 5.50 % Relative Standard Deviation = 6.1 Number of Observations = 4 Blind Sample ID = 50DIW-50143 Mean = 6.45 % Relative Standard Deviation = 5.4 Number of Observations = 4 Blind Sample ID = 25DIW-75153 Mean = 8.51 % Relative Standard Deviation = 6.7 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 7.82 % Relative Standard Deviation = 6.1 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 6.16 % Relative Standard Deviation = 2.8 Number of Observations = 4 Blind Sample ID = 25151-75155 Mean = 10.96 % Relative Standard Deviation = 6.2 Number of Observations = 4 Blind Sample ID = 25145-75147
The SGPlot Procedure


- Selenium, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01147, MCode: GF102
Dates: 10/09/98 through 08/17/05
Open Data Set

Mean = 2.24 % Relative Standard Deviation = 20.8 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 1.98 % Relative Standard Deviation = 25.1 Number of Observations = 6 Blind Sample ID = 75169-25DIW Mean = 4.83 % Relative Standard Deviation = 33.4 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 2.51 % Relative Standard Deviation = 55.2 Number of Observations = 8 Blind Sample ID = 50175-50173 Mean = 1.75 % Relative Standard Deviation = 37.0 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 1.60 % Relative Standard Deviation = 13.8 Number of Observations = 6 Blind Sample ID = 50171-50173 Mean = 2.52 % Relative Standard Deviation = 40.3 Number of Observations = 15 Blind Sample ID = 50167-50171 Mean = 5.14 % Relative Standard Deviation = 10.5 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 6.23 % Relative Standard Deviation = 32.2 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 4.86 % Relative Standard Deviation = 9.5 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 4.60 % Relative Standard Deviation = 4.4 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 2.17 % Relative Standard Deviation = 22.1 Number of Observations = 3 Blind Sample ID = 50157-50DIW Mean = 3.96 % Relative Standard Deviation = 10.8 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 7.42 % Relative Standard Deviation = 11.7 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 4.17 % Relative Standard Deviation = 15.9 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 6.85 % Relative Standard Deviation = 12.0 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 8.82 % Relative Standard Deviation = 8.3 Number of Observations = 12 Blind Sample ID = 25DIW-75147 Mean = 7.64 % Relative Standard Deviation = 5.7 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 1.73 % Relative Standard Deviation = 15.7 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 3.39 % Relative Standard Deviation = 37.0 Number of Observations = 16 Blind Sample ID = 25169-75167 Mean = 6.39 % Relative Standard Deviation = 9.1 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 7.11 % Relative Standard Deviation = 7.9 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 9.11 % Relative Standard Deviation = 12.4 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 7.41 % Relative Standard Deviation = 6.8 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 5.47 % Relative Standard Deviation = 7.4 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 5.55 % Relative Standard Deviation = 7.8 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 10.94 % Relative Standard Deviation = 7.6 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 6.34 % Relative Standard Deviation = 12.1 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 11.07 % Relative Standard Deviation = 8.3 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 10.64 % Relative Standard Deviation = 7.4 Number of Observations = 8 Blind Sample ID = 25145-75147
The SGPlot Procedure


- Selenium, UNF, GFAA-EPA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01147, MCode: GF073
Dates: 10/04/91 through 09/19/97
Open Data Set

Mean = 2.50 % Relative Standard Deviation = 21.4 Number of Observations = 8 Blind Sample ID = 75DW-25125 Mean = 2.00 % Relative Standard Deviation = 0.0 Number of Observations = 7 Blind Sample ID = 75DW-25117 Mean = 2.18 % Relative Standard Deviation = 18.5 Number of Observations = 11 Blind Sample ID = 75DIW-25125 Mean = 5.25 % Relative Standard Deviation = 16.9 Number of Observations = 8 Blind Sample ID = 50DW-50125 Mean = 3.00 % Relative Standard Deviation = 17.8 Number of Observations = 8 Blind Sample ID = 50DW-50117 Mean = 2.23 % Relative Standard Deviation = 7.3 Number of Observations = 6 Blind Sample ID = 50DIW-50139 Mean = 5.40 % Relative Standard Deviation = 7.7 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 15.25 % Relative Standard Deviation = 11.2 Number of Observations = 4 Blind Sample ID = 50125-50133 Mean = 7.50 % Relative Standard Deviation = 7.1 Number of Observations = 8 Blind Sample ID = 50125-50123 Mean = 18.63 % Relative Standard Deviation = 13.1 Number of Observations = 8 Blind Sample ID = 50107-50113 Mean = 10.25 % Relative Standard Deviation = 6.9 Number of Observations = 8 Blind Sample ID = 50101-50107 Mean = 6.25 % Relative Standard Deviation = 11.3 Number of Observations = 8 Blind Sample ID = 25DW-75121 Mean = 3.50 % Relative Standard Deviation = 15.3 Number of Observations = 8 Blind Sample ID = 25DW-75105 Mean = 7.89 % Relative Standard Deviation = 4.5 Number of Observations = 12 Blind Sample ID = 25DIW-75135 Mean = 8.75 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 25DIW-75131 Mean = 7.88 % Relative Standard Deviation = 10.6 Number of Observations = 8 Blind Sample ID = 25107-75105
The SGPlot Procedure


- Selenium, UNF, Hydride, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01147, MCode: HY012
Dates: 10/03/91 through 09/24/98
Open Data Set

Mean = 6.62 % Relative Standard Deviation = 18.9 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 4.75 % Relative Standard Deviation = 15.9 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 3.08 % Relative Standard Deviation = 9.4 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 4.33 % Relative Standard Deviation = 20.0 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 4.98 % Relative Standard Deviation = 19.5 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 1.99 % Relative Standard Deviation = 23.5 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 4.94 % Relative Standard Deviation = 12.8 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 9.75 % Relative Standard Deviation = 4.3 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 7.31 % Relative Standard Deviation = 13.8 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 3.82 % Relative Standard Deviation = 19.4 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 4.88 % Relative Standard Deviation = 13.2 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 15.33 % Relative Standard Deviation = 15.8 Number of Observations = 12 Blind Sample ID = 50125-50133 Mean = 7.50 % Relative Standard Deviation = 11.8 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 6.63 % Relative Standard Deviation = 7.8 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 6.94 % Relative Standard Deviation = 8.3 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 7.50 % Relative Standard Deviation = 9.4 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 3.44 % Relative Standard Deviation = 18.3 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 5.27 % Relative Standard Deviation = 14.9 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 3.50 % Relative Standard Deviation = 15.3 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 6.29 % Relative Standard Deviation = 9.7 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 2.44 % Relative Standard Deviation = 21.0 Number of Observations = 16 Blind Sample ID = 33DW-67115 Mean = 6.75 % Relative Standard Deviation = 10.5 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 8.27 % Relative Standard Deviation = 16.3 Number of Observations = 11 Blind Sample ID = 33DIW-67131 Mean = 15.38 % Relative Standard Deviation = 11.5 Number of Observations = 24 Blind Sample ID = 25DW-75113 Mean = 4.29 % Relative Standard Deviation = 14.3 Number of Observations = 14 Blind Sample ID = 25DW-75105 Mean = 7.25 % Relative Standard Deviation = 10.9 Number of Observations = 8 Blind Sample ID = 25DIW-75143 Mean = 6.48 % Relative Standard Deviation = 17.2 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 8.33 % Relative Standard Deviation = 13.4 Number of Observations = 9 Blind Sample ID = 25DIW-75131 Mean = 5.19 % Relative Standard Deviation = 12.6 Number of Observations = 16 Blind Sample ID = 25DIW-75127 Mean = 5.68 % Relative Standard Deviation = 9.5 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 1.30 % Relative Standard Deviation = 11.7 Number of Observations = 8 Blind Sample ID = 25139-75137 Mean = 10.14 % Relative Standard Deviation = 10.5 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 6.50 % Relative Standard Deviation = 22.2 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Selenium, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01147, MCode: PL120
Dates: 11/08/02 through 10/06/05
Open Data Set

Mean = 1.03 % Relative Standard Deviation = 14.3 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 2.10 % Relative Standard Deviation = 6.8 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 1.37 % Relative Standard Deviation = 5.4 Number of Observations = 4 Blind Sample ID = 50175-50DIW Mean = 2.17 % Relative Standard Deviation = 8.2 Number of Observations = 18 Blind Sample ID = 50175-50173 Mean = 1.32 % Relative Standard Deviation = 17.1 Number of Observations = 22 Blind Sample ID = 50173-50DIW Mean = 0.91 % Relative Standard Deviation = 21.1 Number of Observations = 12 Blind Sample ID = 50171-50DIW Mean = 2.02 % Relative Standard Deviation = 9.1 Number of Observations = 16 Blind Sample ID = 50171-50173 Mean = 1.82 % Relative Standard Deviation = 6.9 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 2.36 % Relative Standard Deviation = 10.6 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 1.96 % Relative Standard Deviation = 8.2 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 1.86 % Relative Standard Deviation = 7.9 Number of Observations = 8 Blind Sample ID = 25165-75DIW
The SGPlot Procedure


- Selenium, UNF, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01147, MCode: PLM11
Dates: 09/20/05 through 09/08/06
Open Data Set

Mean = 0.75 % Relative Standard Deviation = 10.1 Number of Observations = 12 Blind Sample ID = 75179-25DIW Mean = 1.38 % Relative Standard Deviation = 7.4 Number of Observations = 12 Blind Sample ID = 75175-25DIW Mean = 0.99 % Relative Standard Deviation = 5.9 Number of Observations = 13 Blind Sample ID = 50177-50179 Mean = 0.98 % Relative Standard Deviation = 6.3 Number of Observations = 17 Blind Sample ID = 50175-50DIW Mean = 1.03 % Relative Standard Deviation = 7.2 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 1.57 % Relative Standard Deviation = 23.9 Number of Observations = 17 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Silver, FIL, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01075, MCode: GF092
Dates: 10/03/91 through 10/19/04
Open Data Set

Mean = 2.52 % Relative Standard Deviation = 22.6 Number of Observations = 8 Blind Sample ID = 75DIW-25151 Mean = 2.68 % Relative Standard Deviation = 3.9 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 8.83 % Relative Standard Deviation = 1.9 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 4.85 % Relative Standard Deviation = 7.8 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 0.98 % Relative Standard Deviation = 6.8 Number of Observations = 16 Blind Sample ID = 50171-50DIW Mean = 4.43 % Relative Standard Deviation = 12.4 Number of Observations = 15 Blind Sample ID = 50167-50171 Mean = 3.52 % Relative Standard Deviation = 7.4 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 4.84 % Relative Standard Deviation = 8.0 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 7.79 % Relative Standard Deviation = 4.8 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 8.54 % Relative Standard Deviation = 8.2 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 4.12 % Relative Standard Deviation = 6.1 Number of Observations = 18 Blind Sample ID = 50139-50141 Mean = 6.39 % Relative Standard Deviation = 5.9 Number of Observations = 16 Blind Sample ID = 50135-50139 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 3.88 % Relative Standard Deviation = 16.0 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 28 Blind Sample ID = 33DW-67123 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 2.82 % Relative Standard Deviation = 25.8 Number of Observations = 17 Blind Sample ID = 33DW-67115 Mean = 6.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 5.47 % Relative Standard Deviation = 9.4 Number of Observations = 19 Blind Sample ID = 33127-67133 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 20 Blind Sample ID = 33127-67123 Mean = 2.00 % Relative Standard Deviation = 0.0 Number of Observations = 20 Blind Sample ID = 25DW-75113 Mean = 11.80 % Relative Standard Deviation = 11.2 Number of Observations = 5 Blind Sample ID = 25DIW-75163 Mean = 7.28 % Relative Standard Deviation = 5.1 Number of Observations = 4 Blind Sample ID = 25DIW-75159 Mean = 4.14 % Relative Standard Deviation = 2.1 Number of Observations = 7 Blind Sample ID = 25DIW-75153 Mean = 4.90 % Relative Standard Deviation = 5.1 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 14.66 % Relative Standard Deviation = 3.6 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 7.29 % Relative Standard Deviation = 6.6 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 1.85 % Relative Standard Deviation = 19.8 Number of Observations = 39 Blind Sample ID = 25DIW-75127 Mean = 5.73 % Relative Standard Deviation = 4.3 Number of Observations = 16 Blind Sample ID = 25169-75167 Mean = 2.37 % Relative Standard Deviation = 4.4 Number of Observations = 4 Blind Sample ID = 25159-75155 Mean = 10.12 % Relative Standard Deviation = 18.7 Number of Observations = 4 Blind Sample ID = 25155-75157 Mean = 7.18 % Relative Standard Deviation = 2.9 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 8.04 % Relative Standard Deviation = 4.1 Number of Observations = 14 Blind Sample ID = 25137-75135 Mean = 4.00 % Relative Standard Deviation = 0.0 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 2.78 % Relative Standard Deviation = 15.2 Number of Observations = 40 Blind Sample ID = 25125-75127 Mean = 3.05 % Relative Standard Deviation = 7.3 Number of Observations = 20 Blind Sample ID = 25125-75113 Mean = 1.33 % Relative Standard Deviation = 36.9 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Silver, FIL, GFAA, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01075, MCode: GF093
Dates: 10/07/98 through 08/09/00
Open Data Set

Mean = 3.52 % Relative Standard Deviation = 7.1 Number of Observations = 4 Blind Sample ID = 50DIW-50145 Mean = 4.54 % Relative Standard Deviation = 5.5 Number of Observations = 3 Blind Sample ID = 25DIW-75147 Mean = 4.65 % Relative Standard Deviation = 3.6 Number of Observations = 8 Blind Sample ID = 25155-75147 Mean = 6.77 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 25147-75145
The SGPlot Procedure


- Silver, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01075, MCode: PLM43
Dates: 02/07/94 through 09/19/06
Open Data Set

Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 0.32 % Relative Standard Deviation = 24.5 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 0.83 % Relative Standard Deviation = 9.5 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 2.37 % Relative Standard Deviation = 5.8 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 3.43 % Relative Standard Deviation = 2.6 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 8.55 % Relative Standard Deviation = 4.4 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 4.72 % Relative Standard Deviation = 8.3 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 0.21 % Relative Standard Deviation = 18.1 Number of Observations = 19 Blind Sample ID = 50177-50179 Mean = 0.58 % Relative Standard Deviation = 33.8 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 1.27 % Relative Standard Deviation = 7.8 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 0.47 % Relative Standard Deviation = 29.7 Number of Observations = 28 Blind Sample ID = 50173-50DIW Mean = 0.89 % Relative Standard Deviation = 16.4 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 1.54 % Relative Standard Deviation = 11.5 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 2.43 % Relative Standard Deviation = 19.2 Number of Observations = 23 Blind Sample ID = 50167-50DIW Mean = 4.50 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 7.49 % Relative Standard Deviation = 7.0 Number of Observations = 23 Blind Sample ID = 50163-50DIW Mean = 8.69 % Relative Standard Deviation = 6.5 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 7.32 % Relative Standard Deviation = 3.6 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 13.27 % Relative Standard Deviation = 2.7 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 11.34 % Relative Standard Deviation = 3.3 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 4.93 % Relative Standard Deviation = 5.9 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 5.47 % Relative Standard Deviation = 9.4 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 32 Blind Sample ID = 50125-50123 Mean = 0.17 % Relative Standard Deviation = 19.3 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 0.77 % Relative Standard Deviation = 31.3 Number of Observations = 24 Blind Sample ID = 25177-75175 Mean = 1.34 % Relative Standard Deviation = 29.2 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 5.93 % Relative Standard Deviation = 5.0 Number of Observations = 46 Blind Sample ID = 25169-75167 Mean = 4.38 % Relative Standard Deviation = 3.5 Number of Observations = 23 Blind Sample ID = 25167-75169 Mean = 0.45 % Relative Standard Deviation = 33.4 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 10.93 % Relative Standard Deviation = 5.5 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 10.74 % Relative Standard Deviation = 3.9 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 3.97 % Relative Standard Deviation = 5.9 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 2.54 % Relative Standard Deviation = 10.9 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 7.20 % Relative Standard Deviation = 2.2 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 2.63 % Relative Standard Deviation = 18.6 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 2.88 % Relative Standard Deviation = 11.9 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Silver, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01075, MCode: PLA11
Dates: 10/02/91 through 10/01/02
Open Data Set

Mean = 1.12 % Relative Standard Deviation = 29.7 Number of Observations = 17 Blind Sample ID = 67DW-33113 Mean = 8.59 % Relative Standard Deviation = 9.4 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 8.93 % Relative Standard Deviation = 15.6 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 7.36 % Relative Standard Deviation = 18.7 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 12.98 % Relative Standard Deviation = 12.3 Number of Observations = 16 Blind Sample ID = 50143-50151 Mean = 11.15 % Relative Standard Deviation = 7.4 Number of Observations = 14 Blind Sample ID = 50143-50145 Mean = 4.77 % Relative Standard Deviation = 20.4 Number of Observations = 12 Blind Sample ID = 50139-50145 Mean = 2.73 % Relative Standard Deviation = 39.1 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 4.57 % Relative Standard Deviation = 24.0 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 1.67 % Relative Standard Deviation = 59.8 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 3.84 % Relative Standard Deviation = 24.6 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 1.04 % Relative Standard Deviation = 19.6 Number of Observations = 24 Blind Sample ID = 50123-50121 Mean = 1.04 % Relative Standard Deviation = 19.6 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 1.16 % Relative Standard Deviation = 36.9 Number of Observations = 44 Blind Sample ID = 50121-50105 Mean = 4.17 % Relative Standard Deviation = 22.5 Number of Observations = 47 Blind Sample ID = 50115-50103 Mean = 1.33 % Relative Standard Deviation = 56.5 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 2.35 % Relative Standard Deviation = 55.5 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 1.09 % Relative Standard Deviation = 26.5 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 7.27 % Relative Standard Deviation = 19.8 Number of Observations = 21 Blind Sample ID = 25DIW-75151 Mean = 6.76 % Relative Standard Deviation = 23.7 Number of Observations = 17 Blind Sample ID = 25DIW-75135 Mean = 1.22 % Relative Standard Deviation = 44.9 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 9.99 % Relative Standard Deviation = 12.9 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 11.05 % Relative Standard Deviation = 19.7 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 5.32 % Relative Standard Deviation = 28.6 Number of Observations = 7 Blind Sample ID = 25155-75153 Mean = 5.66 % Relative Standard Deviation = 20.1 Number of Observations = 7 Blind Sample ID = 25155-75147 Mean = 6.70 % Relative Standard Deviation = 4.4 Number of Observations = 10 Blind Sample ID = 25147-75145 Mean = 2.69 % Relative Standard Deviation = 40.1 Number of Observations = 33 Blind Sample ID = 25141-75139 Mean = 3.50 % Relative Standard Deviation = 27.6 Number of Observations = 16 Blind Sample ID = 25133-75127 Mean = 2.76 % Relative Standard Deviation = 37.3 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 2.27 % Relative Standard Deviation = 45.2 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 2.22 % Relative Standard Deviation = 42.4 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 1.54 % Relative Standard Deviation = 54.0 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 1.43 % Relative Standard Deviation = 50.0 Number of Observations = 40 Blind Sample ID = 25117-75113 Mean = 3.95 % Relative Standard Deviation = 35.8 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 1.20 % Relative Standard Deviation = 37.3 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Silver, UNF, GFAA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01077, MCode: GF103
Dates: 10/03/91 through 10/14/04
Open Data Set

Mean = 2.51 % Relative Standard Deviation = 4.5 Number of Observations = 16 Blind Sample ID = 75DIW-25151 Mean = 2.62 % Relative Standard Deviation = 20.7 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 1.10 % Relative Standard Deviation = 27.9 Number of Observations = 39 Blind Sample ID = 67DW-33113 Mean = 1.92 % Relative Standard Deviation = 15.1 Number of Observations = 12 Blind Sample ID = 50DW-50125 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 1.78 % Relative Standard Deviation = 24.8 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 3.38 % Relative Standard Deviation = 4.2 Number of Observations = 8 Blind Sample ID = 50DIW-50145 Mean = 8.73 % Relative Standard Deviation = 4.5 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 1.04 % Relative Standard Deviation = 8.6 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 4.86 % Relative Standard Deviation = 3.3 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 0.97 % Relative Standard Deviation = 7.6 Number of Observations = 16 Blind Sample ID = 50171-50DIW Mean = 4.38 % Relative Standard Deviation = 4.8 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 3.50 % Relative Standard Deviation = 8.5 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 4.52 % Relative Standard Deviation = 8.3 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 7.55 % Relative Standard Deviation = 3.5 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 8.17 % Relative Standard Deviation = 8.8 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 7.49 % Relative Standard Deviation = 6.1 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 11.60 % Relative Standard Deviation = 6.8 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 4.88 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 3.10 % Relative Standard Deviation = 8.8 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 4.98 % Relative Standard Deviation = 0.9 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 5.62 % Relative Standard Deviation = 9.0 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 2.07 % Relative Standard Deviation = 22.5 Number of Observations = 28 Blind Sample ID = 50125-50123 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 1.56 % Relative Standard Deviation = 32.8 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 1.20 % Relative Standard Deviation = 35.1 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 3.75 % Relative Standard Deviation = 15.4 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 4.91 % Relative Standard Deviation = 11.0 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 2.94 % Relative Standard Deviation = 19.5 Number of Observations = 16 Blind Sample ID = 33DW-67115 Mean = 5.75 % Relative Standard Deviation = 8.1 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 3.21 % Relative Standard Deviation = 12.9 Number of Observations = 24 Blind Sample ID = 25DW-75113 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 14 Blind Sample ID = 25DW-75105 Mean = 12.54 % Relative Standard Deviation = 5.4 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 7.33 % Relative Standard Deviation = 4.1 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 4.07 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 4.87 % Relative Standard Deviation = 4.6 Number of Observations = 11 Blind Sample ID = 25DIW-75147 Mean = 14.52 % Relative Standard Deviation = 4.3 Number of Observations = 15 Blind Sample ID = 25DIW-75143 Mean = 7.08 % Relative Standard Deviation = 5.9 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 2.06 % Relative Standard Deviation = 12.1 Number of Observations = 16 Blind Sample ID = 25DIW-75127 Mean = 5.65 % Relative Standard Deviation = 2.9 Number of Observations = 16 Blind Sample ID = 25169-75167 Mean = 11.01 % Relative Standard Deviation = 10.9 Number of Observations = 7 Blind Sample ID = 25163-75159 Mean = 11.14 % Relative Standard Deviation = 4.8 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 15.42 % Relative Standard Deviation = 4.7 Number of Observations = 7 Blind Sample ID = 25159-75161 Mean = 2.36 % Relative Standard Deviation = 1.9 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 11.74 % Relative Standard Deviation = 3.0 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 12.07 % Relative Standard Deviation = 5.1 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 4.70 % Relative Standard Deviation = 6.1 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 2.78 % Relative Standard Deviation = 4.2 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 6.67 % Relative Standard Deviation = 5.6 Number of Observations = 8 Blind Sample ID = 25147-75145 Mean = 7.22 % Relative Standard Deviation = 6.0 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 2.98 % Relative Standard Deviation = 3.0 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 3.71 % Relative Standard Deviation = 13.1 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 1.50 % Relative Standard Deviation = 34.8 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Silver, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01077, MCode: PLM48
Dates: 11/08/02 through 09/19/06
Open Data Set

Mean = 0.81 % Relative Standard Deviation = 3.6 Number of Observations = 9 Blind Sample ID = 75179-25DIW Mean = 1.22 % Relative Standard Deviation = 10.2 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 1.64 % Relative Standard Deviation = 2.2 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 2.66 % Relative Standard Deviation = 1.5 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 0.48 % Relative Standard Deviation = 13.5 Number of Observations = 16 Blind Sample ID = 50177-50179 Mean = 0.83 % Relative Standard Deviation = 6.0 Number of Observations = 22 Blind Sample ID = 50175-50DIW Mean = 1.41 % Relative Standard Deviation = 1.5 Number of Observations = 12 Blind Sample ID = 50175-50173 Mean = 0.54 % Relative Standard Deviation = 1.3 Number of Observations = 13 Blind Sample ID = 50173-50DIW Mean = 0.98 % Relative Standard Deviation = 3.7 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 1.66 % Relative Standard Deviation = 3.2 Number of Observations = 12 Blind Sample ID = 50171-50173 Mean = 2.68 % Relative Standard Deviation = 1.0 Number of Observations = 8 Blind Sample ID = 50167-50DIW Mean = 4.45 % Relative Standard Deviation = 1.3 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 0.24 % Relative Standard Deviation = 31.8 Number of Observations = 16 Blind Sample ID = 25179-75177 Mean = 1.25 % Relative Standard Deviation = 3.8 Number of Observations = 16 Blind Sample ID = 25177-75175 Mean = 1.68 % Relative Standard Deviation = 4.8 Number of Observations = 8 Blind Sample ID = 25171-75175 Mean = 0.57 % Relative Standard Deviation = 3.2 Number of Observations = 8 Blind Sample ID = 25165-75DIW
The SGPlot Procedure


- Strontium, FIL, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01080, MCode: AA038
Dates: 10/04/91 through 03/27/96
Open Data Set

Mean = 30.00 % Relative Standard Deviation = 0.0 Number of Observations = 4 Blind Sample ID = 33DIW-67135 Mean = 193.64 % Relative Standard Deviation = 4.8 Number of Observations = 11 Blind Sample ID = 33DIW-67131 Mean = 32.50 % Relative Standard Deviation = 29.5 Number of Observations = 4 Blind Sample ID = 25DIW-75135 Mean = 217.50 % Relative Standard Deviation = 5.2 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 63.33 % Relative Standard Deviation = 9.1 Number of Observations = 3 Blind Sample ID = 25133-75127 Mean = 54.55 % Relative Standard Deviation = 22.2 Number of Observations = 11 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Strontium, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01080, MCode: PLM40
Dates: 10/23/01 through 09/19/06
Open Data Set

Mean = 84.10 % Relative Standard Deviation = 5.7 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 48.68 % Relative Standard Deviation = 5.1 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 129.88 % Relative Standard Deviation = 4.4 Number of Observations = 23 Blind Sample ID = 75169-25DIW Mean = 177.00 % Relative Standard Deviation = 3.4 Number of Observations = 23 Blind Sample ID = 50177-50179 Mean = 30.51 % Relative Standard Deviation = 7.5 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 172.88 % Relative Standard Deviation = 1.8 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 142.67 % Relative Standard Deviation = 4.2 Number of Observations = 28 Blind Sample ID = 50173-50DIW Mean = 41.64 % Relative Standard Deviation = 7.1 Number of Observations = 44 Blind Sample ID = 50171-50DIW Mean = 183.84 % Relative Standard Deviation = 3.5 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 20.29 % Relative Standard Deviation = 5.6 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 61.46 % Relative Standard Deviation = 4.6 Number of Observations = 22 Blind Sample ID = 50167-50171 Mean = 17.07 % Relative Standard Deviation = 5.1 Number of Observations = 12 Blind Sample ID = 50163-50DIW Mean = 26.80 % Relative Standard Deviation = 3.0 Number of Observations = 15 Blind Sample ID = 50161-50DIW Mean = 206.03 % Relative Standard Deviation = 3.5 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 108.39 % Relative Standard Deviation = 4.6 Number of Observations = 28 Blind Sample ID = 25177-75175 Mean = 68.86 % Relative Standard Deviation = 5.8 Number of Observations = 15 Blind Sample ID = 25171-75175 Mean = 72.59 % Relative Standard Deviation = 4.6 Number of Observations = 71 Blind Sample ID = 25169-75167 Mean = 141.10 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 39.22 % Relative Standard Deviation = 6.8 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 153.43 % Relative Standard Deviation = 3.0 Number of Observations = 12 Blind Sample ID = 25161-75159
The SGPlot Procedure


- Strontium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01080, MCode: PLA11
Dates: 10/02/91 through 09/29/06
Open Data Set

Mean = 94.89 % Relative Standard Deviation = 1.9 Number of Observations = 8 Blind Sample ID = 75DIW-25151 Mean = 85.52 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 75179-25DIW Mean = 47.98 % Relative Standard Deviation = 2.0 Number of Observations = 8 Blind Sample ID = 75175-25DIW Mean = 64.64 % Relative Standard Deviation = 2.8 Number of Observations = 31 Blind Sample ID = 75171-25DIW Mean = 136.98 % Relative Standard Deviation = 5.6 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 10.80 % Relative Standard Deviation = 8.4 Number of Observations = 40 Blind Sample ID = 67DW-33113 Mean = 151.28 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 204.30 % Relative Standard Deviation = 2.6 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 113.66 % Relative Standard Deviation = 2.7 Number of Observations = 8 Blind Sample ID = 50DIW-50137 Mean = 23.52 % Relative Standard Deviation = 2.2 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 182.93 % Relative Standard Deviation = 3.0 Number of Observations = 8 Blind Sample ID = 50177-50179 Mean = 31.35 % Relative Standard Deviation = 2.8 Number of Observations = 15 Blind Sample ID = 50175-50DIW Mean = 172.55 % Relative Standard Deviation = 3.6 Number of Observations = 8 Blind Sample ID = 50175-50173 Mean = 138.34 % Relative Standard Deviation = 3.6 Number of Observations = 8 Blind Sample ID = 50173-50DIW Mean = 41.73 % Relative Standard Deviation = 3.2 Number of Observations = 7 Blind Sample ID = 50171-50DIW Mean = 188.00 % Relative Standard Deviation = 0.9 Number of Observations = 4 Blind Sample ID = 50171-50173 Mean = 20.53 % Relative Standard Deviation = 3.0 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 63.44 % Relative Standard Deviation = 3.0 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 168.77 % Relative Standard Deviation = 5.5 Number of Observations = 7 Blind Sample ID = 50165-50169 Mean = 105.64 % Relative Standard Deviation = 2.2 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 17.77 % Relative Standard Deviation = 1.1 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 27.06 % Relative Standard Deviation = 3.0 Number of Observations = 3 Blind Sample ID = 50161-50DIW Mean = 30.14 % Relative Standard Deviation = 3.6 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 177.32 % Relative Standard Deviation = 3.9 Number of Observations = 13 Blind Sample ID = 50155-50DIW Mean = 340.85 % Relative Standard Deviation = 3.9 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 255.88 % Relative Standard Deviation = 2.1 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 305.59 % Relative Standard Deviation = 2.7 Number of Observations = 26 Blind Sample ID = 50139-50145 Mean = 199.06 % Relative Standard Deviation = 3.4 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 140.29 % Relative Standard Deviation = 3.2 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 168.33 % Relative Standard Deviation = 3.3 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 47.36 % Relative Standard Deviation = 2.1 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 46.57 % Relative Standard Deviation = 2.9 Number of Observations = 30 Blind Sample ID = 50123-50121 Mean = 44.96 % Relative Standard Deviation = 3.3 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 805.90 % Relative Standard Deviation = 2.5 Number of Observations = 39 Blind Sample ID = 50121-50105 Mean = 714.23 % Relative Standard Deviation = 1.9 Number of Observations = 26 Blind Sample ID = 50115-50103 Mean = 902.92 % Relative Standard Deviation = 2.3 Number of Observations = 24 Blind Sample ID = 50105-50117 Mean = 972.27 % Relative Standard Deviation = 1.7 Number of Observations = 22 Blind Sample ID = 50103-50101 Mean = 31.25 % Relative Standard Deviation = 4.8 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 29.77 % Relative Standard Deviation = 3.4 Number of Observations = 13 Blind Sample ID = 33DW-67121 Mean = 31.00 % Relative Standard Deviation = 2.6 Number of Observations = 4 Blind Sample ID = 33DIW-67135 Mean = 32.13 % Relative Standard Deviation = 4.0 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 26.43 % Relative Standard Deviation = 3.2 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 147.14 % Relative Standard Deviation = 5.5 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 230.86 % Relative Standard Deviation = 2.4 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 287.28 % Relative Standard Deviation = 2.6 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 235.21 % Relative Standard Deviation = 3.1 Number of Observations = 8 Blind Sample ID = 25DIW-75147 Mean = 230.14 % Relative Standard Deviation = 3.7 Number of Observations = 16 Blind Sample ID = 25DIW-75143 Mean = 35.01 % Relative Standard Deviation = 3.0 Number of Observations = 29 Blind Sample ID = 25DIW-75135 Mean = 213.89 % Relative Standard Deviation = 2.8 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 209.73 % Relative Standard Deviation = 3.9 Number of Observations = 8 Blind Sample ID = 25179-75177 Mean = 110.75 % Relative Standard Deviation = 1.5 Number of Observations = 8 Blind Sample ID = 25177-75175 Mean = 69.36 % Relative Standard Deviation = 2.9 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 77.74 % Relative Standard Deviation = 2.3 Number of Observations = 4 Blind Sample ID = 25169-75167 Mean = 39.80 % Relative Standard Deviation = 3.0 Number of Observations = 4 Blind Sample ID = 25165-75DIW Mean = 150.27 % Relative Standard Deviation = 2.0 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 157.03 % Relative Standard Deviation = 2.3 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 88.31 % Relative Standard Deviation = 2.5 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 328.39 % Relative Standard Deviation = 3.2 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 159.18 % Relative Standard Deviation = 2.1 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 135.98 % Relative Standard Deviation = 7.4 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 317.34 % Relative Standard Deviation = 3.0 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 328.35 % Relative Standard Deviation = 1.7 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 362.09 % Relative Standard Deviation = 2.8 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 227.91 % Relative Standard Deviation = 2.3 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 284.94 % Relative Standard Deviation = 3.0 Number of Observations = 8 Blind Sample ID = 25145-75147 Mean = 353.19 % Relative Standard Deviation = 2.1 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 276.36 % Relative Standard Deviation = 2.1 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 69.90 % Relative Standard Deviation = 1.7 Number of Observations = 20 Blind Sample ID = 25133-75127 Mean = 47.90 % Relative Standard Deviation = 2.9 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 49.71 % Relative Standard Deviation = 3.5 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 35.50 % Relative Standard Deviation = 3.2 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 50.17 % Relative Standard Deviation = 3.4 Number of Observations = 23 Blind Sample ID = 25123-75127 Mean = 91.00 % Relative Standard Deviation = 2.5 Number of Observations = 22 Blind Sample ID = 25117-75113 Mean = 329.17 % Relative Standard Deviation = 2.5 Number of Observations = 24 Blind Sample ID = 25101-75113 Mean = 187.00 % Relative Standard Deviation = 33.6 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Strontium, UNF, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01082, MCode: AA070
Dates: 10/13/98 through 03/15/99
Open Data Set

Mean = 213.00 % Relative Standard Deviation = 7.9 Number of Observations = 3 Blind Sample ID = 25147-75145
The SGPlot Procedure


- Strontium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01082, MCode: PLA15
Dates: 05/17/99 through 09/14/01
Open Data Set

Mean = 88.98 % Relative Standard Deviation = 2.9 Number of Observations = 4 Blind Sample ID = 75DIW-25155 Mean = 28.87 % Relative Standard Deviation = 3.3 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 166.54 % Relative Standard Deviation = 2.7 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 228.40 % Relative Standard Deviation = 3.3 Number of Observations = 4 Blind Sample ID = 25DIW-75147 Mean = 149.85 % Relative Standard Deviation = 2.7 Number of Observations = 4 Blind Sample ID = 25157-75159 Mean = 320.40 % Relative Standard Deviation = 2.0 Number of Observations = 3 Blind Sample ID = 25155-75147 Mean = 220.96 % Relative Standard Deviation = 1.6 Number of Observations = 3 Blind Sample ID = 25147-75145
The SGPlot Procedure


- Thallium, FIL, GFAA, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01057, MCode: GF083
Dates: 10/07/98 through 09/08/99
Open Data Set

Mean = 7.91 % Relative Standard Deviation = 4.4 Number of Observations = 4 Blind Sample ID = 50DIW-50145 Mean = 17.07 % Relative Standard Deviation = 4.2 Number of Observations = 8 Blind Sample ID = 25147-75145
The SGPlot Procedure


- Thallium, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01057, MCode: PLM40
Dates: 10/23/01 through 09/19/06
Open Data Set

Mean = 0.95 % Relative Standard Deviation = 4.3 Number of Observations = 14 Blind Sample ID = 75179-25DIW Mean = 1.53 % Relative Standard Deviation = 6.7 Number of Observations = 19 Blind Sample ID = 75175-25DIW Mean = 3.57 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 1.42 % Relative Standard Deviation = 25.9 Number of Observations = 20 Blind Sample ID = 50177-50179 Mean = 0.95 % Relative Standard Deviation = 5.7 Number of Observations = 22 Blind Sample ID = 50175-50DIW Mean = 3.90 % Relative Standard Deviation = 6.2 Number of Observations = 19 Blind Sample ID = 50175-50173 Mean = 3.03 % Relative Standard Deviation = 3.7 Number of Observations = 21 Blind Sample ID = 50173-50DIW Mean = 4.13 % Relative Standard Deviation = 3.5 Number of Observations = 36 Blind Sample ID = 50171-50DIW Mean = 6.83 % Relative Standard Deviation = 6.7 Number of Observations = 16 Blind Sample ID = 50171-50173 Mean = 11.05 % Relative Standard Deviation = 3.8 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 15.19 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 19.74 % Relative Standard Deviation = 5.9 Number of Observations = 12 Blind Sample ID = 50163-50DIW Mean = 25.07 % Relative Standard Deviation = 4.6 Number of Observations = 15 Blind Sample ID = 50161-50DIW Mean = 1.55 % Relative Standard Deviation = 8.0 Number of Observations = 24 Blind Sample ID = 25179-75177 Mean = 1.94 % Relative Standard Deviation = 14.2 Number of Observations = 20 Blind Sample ID = 25177-75175 Mean = 3.54 % Relative Standard Deviation = 4.6 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 17.49 % Relative Standard Deviation = 2.4 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 9.03 % Relative Standard Deviation = 2.7 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 8.70 % Relative Standard Deviation = 5.3 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 22.63 % Relative Standard Deviation = 3.0 Number of Observations = 13 Blind Sample ID = 25161-75159
The SGPlot Procedure


- Uranium, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 22703, MCode: PLM43
Dates: 04/19/94 through 09/19/06
Open Data Set

Mean = 6.79 % Relative Standard Deviation = 4.3 Number of Observations = 34 Blind Sample ID = GT3 Mean = 1.85 % Relative Standard Deviation = 5.5 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 1.09 % Relative Standard Deviation = 9.2 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 2.57 % Relative Standard Deviation = 1.3 Number of Observations = 13 Blind Sample ID = 75DIW-25137 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 1.12 % Relative Standard Deviation = 4.9 Number of Observations = 22 Blind Sample ID = 75179-25DIW Mean = 1.10 % Relative Standard Deviation = 5.6 Number of Observations = 23 Blind Sample ID = 75175-25DIW Mean = 1.29 % Relative Standard Deviation = 5.1 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 5.69 % Relative Standard Deviation = 1.8 Number of Observations = 14 Blind Sample ID = 50DIW-50143 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 1.65 % Relative Standard Deviation = 6.0 Number of Observations = 19 Blind Sample ID = 50177-50179 Mean = 0.72 % Relative Standard Deviation = 5.0 Number of Observations = 46 Blind Sample ID = 50175-50DIW Mean = 1.65 % Relative Standard Deviation = 7.1 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 0.90 % Relative Standard Deviation = 6.5 Number of Observations = 28 Blind Sample ID = 50173-50DIW Mean = 0.63 % Relative Standard Deviation = 5.8 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 1.52 % Relative Standard Deviation = 10.0 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 2.51 % Relative Standard Deviation = 4.6 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 2.27 % Relative Standard Deviation = 5.1 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 3.95 % Relative Standard Deviation = 2.9 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 1.63 % Relative Standard Deviation = 5.3 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 3.45 % Relative Standard Deviation = 4.2 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 13.46 % Relative Standard Deviation = 4.9 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 6.30 % Relative Standard Deviation = 2.1 Number of Observations = 12 Blind Sample ID = 50143-50145 Mean = 5.11 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 27 Blind Sample ID = 50125-50123 Mean = 1.65 % Relative Standard Deviation = 4.9 Number of Observations = 28 Blind Sample ID = 25179-75177 Mean = 1.52 % Relative Standard Deviation = 6.7 Number of Observations = 24 Blind Sample ID = 25177-75175 Mean = 1.38 % Relative Standard Deviation = 7.9 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 3.23 % Relative Standard Deviation = 5.3 Number of Observations = 48 Blind Sample ID = 25169-75167 Mean = 2.15 % Relative Standard Deviation = 3.9 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 5.62 % Relative Standard Deviation = 4.3 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 4.44 % Relative Standard Deviation = 4.5 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 7.24 % Relative Standard Deviation = 5.0 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 9.47 % Relative Standard Deviation = 11.2 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 2.57 % Relative Standard Deviation = 5.5 Number of Observations = 25 Blind Sample ID = 25145-75147 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 12 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Vanadium, FIL, COL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01085, MCode: CL067
Dates: 10/08/91 through 12/28/99
Open Data Set

Mean = 2.81 % Relative Standard Deviation = 8.2 Number of Observations = 12 Blind Sample ID = 50DW-50124 Mean = 2.05 % Relative Standard Deviation = 94.9 Number of Observations = 8 Blind Sample ID = 50DW-50122 Mean = 1.09 % Relative Standard Deviation = 21.9 Number of Observations = 12 Blind Sample ID = 50DW-50118 Mean = 4.54 % Relative Standard Deviation = 8.4 Number of Observations = 53 Blind Sample ID = 50DW-50112 Mean = 2.76 % Relative Standard Deviation = 13.8 Number of Observations = 13 Blind Sample ID = 50DW-50104 Mean = 1.22 % Relative Standard Deviation = 35.5 Number of Observations = 12 Blind Sample ID = 50DIW-50128 Mean = 1.05 % Relative Standard Deviation = 14.8 Number of Observations = 11 Blind Sample ID = 50140-50144 Mean = 1.72 % Relative Standard Deviation = 9.2 Number of Observations = 13 Blind Sample ID = 50132-50134 Mean = 1.93 % Relative Standard Deviation = 25.9 Number of Observations = 14 Blind Sample ID = 50128-50132 Mean = 3.38 % Relative Standard Deviation = 22.1 Number of Observations = 4 Blind Sample ID = 50126-50128 Mean = 5.40 % Relative Standard Deviation = 12.2 Number of Observations = 8 Blind Sample ID = 50126-50124 Mean = 1.84 % Relative Standard Deviation = 9.0 Number of Observations = 9 Blind Sample ID = 50126-50122 Mean = 2.27 % Relative Standard Deviation = 27.3 Number of Observations = 10 Blind Sample ID = 50120-50128 Mean = 3.54 % Relative Standard Deviation = 25.7 Number of Observations = 10 Blind Sample ID = 50120-50124 Mean = 6.04 % Relative Standard Deviation = 9.4 Number of Observations = 12 Blind Sample ID = 50120-50112 Mean = 8.88 % Relative Standard Deviation = 3.6 Number of Observations = 10 Blind Sample ID = 50114-50112 Mean = 2.68 % Relative Standard Deviation = 25.0 Number of Observations = 12 Blind Sample ID = 50110-50118 Mean = 6.70 % Relative Standard Deviation = 6.6 Number of Observations = 12 Blind Sample ID = 50110-50112 Mean = 6.14 % Relative Standard Deviation = 21.8 Number of Observations = 14 Blind Sample ID = 50106-50112 Mean = 4.77 % Relative Standard Deviation = 5.4 Number of Observations = 6 Blind Sample ID = 50106-50104 Mean = 1.06 % Relative Standard Deviation = 14.3 Number of Observations = 7 Blind Sample ID = 25DIW-75132 Mean = 1.83 % Relative Standard Deviation = 18.5 Number of Observations = 8 Blind Sample ID = 25DIW-75120 Mean = 7.17 % Relative Standard Deviation = 4.8 Number of Observations = 3 Blind Sample ID = 25146-75144 Mean = 5.37 % Relative Standard Deviation = 10.2 Number of Observations = 8 Blind Sample ID = 25134-75136 Mean = 1.00 % Relative Standard Deviation = 0.0 Number of Observations = 3 Blind Sample ID = 25132-75130 Mean = 2.02 % Relative Standard Deviation = 25.6 Number of Observations = 6 Blind Sample ID = 25130-75128 Mean = 2.58 % Relative Standard Deviation = 30.4 Number of Observations = 5 Blind Sample ID = 25122-75128
The SGPlot Procedure


- Vanadium, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01085, MCode: PLM40
Dates: 01/11/00 through 10/06/05
Open Data Set

Mean = 5.66 % Relative Standard Deviation = 2.6 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 1.47 % Relative Standard Deviation = 4.3 Number of Observations = 22 Blind Sample ID = 50175-50DIW Mean = 3.70 % Relative Standard Deviation = 5.2 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 2.12 % Relative Standard Deviation = 6.2 Number of Observations = 23 Blind Sample ID = 50173-50DIW Mean = 1.18 % Relative Standard Deviation = 6.1 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 3.36 % Relative Standard Deviation = 6.6 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 8.10 % Relative Standard Deviation = 6.2 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 9.60 % Relative Standard Deviation = 2.9 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 16.83 % Relative Standard Deviation = 4.6 Number of Observations = 12 Blind Sample ID = 50163-50DIW Mean = 8.81 % Relative Standard Deviation = 2.8 Number of Observations = 15 Blind Sample ID = 50161-50DIW Mean = 14.91 % Relative Standard Deviation = 7.2 Number of Observations = 16 Blind Sample ID = 50152-50DIW Mean = 0.48 % Relative Standard Deviation = 27.2 Number of Observations = 16 Blind Sample ID = 50004-50DIW Mean = 2.79 % Relative Standard Deviation = 5.3 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 14.31 % Relative Standard Deviation = 4.4 Number of Observations = 72 Blind Sample ID = 25169-75167 Mean = 9.86 % Relative Standard Deviation = 3.2 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 3.88 % Relative Standard Deviation = 3.5 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 14.66 % Relative Standard Deviation = 5.2 Number of Observations = 12 Blind Sample ID = 25161-75159 Mean = 31.25 % Relative Standard Deviation = 5.7 Number of Observations = 16 Blind Sample ID = 25152-75150 Mean = 9.39 % Relative Standard Deviation = 7.2 Number of Observations = 9 Blind Sample ID = 25146-75144
The SGPlot Procedure


- Vanadium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01085, MCode: PLA11
Dates: 10/02/91 through 09/29/06
Open Data Set

Mean = 2.22 % Relative Standard Deviation = 12.1 Number of Observations = 4 Blind Sample ID = 75179-25DIW Mean = 2.44 % Relative Standard Deviation = 11.1 Number of Observations = 4 Blind Sample ID = 75175-25DIW Mean = 4.57 % Relative Standard Deviation = 5.9 Number of Observations = 3 Blind Sample ID = 75169-25DIW Mean = 6.00 % Relative Standard Deviation = 0.0 Number of Observations = 17 Blind Sample ID = 67DW-33113 Mean = 1.63 % Relative Standard Deviation = 26.1 Number of Observations = 10 Blind Sample ID = 50175-50DIW Mean = 3.70 % Relative Standard Deviation = 5.1 Number of Observations = 8 Blind Sample ID = 50175-50173 Mean = 2.35 % Relative Standard Deviation = 8.7 Number of Observations = 8 Blind Sample ID = 50173-50DIW Mean = 1.23 % Relative Standard Deviation = 15.5 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 3.69 % Relative Standard Deviation = 2.8 Number of Observations = 4 Blind Sample ID = 50171-50173 Mean = 8.03 % Relative Standard Deviation = 8.1 Number of Observations = 4 Blind Sample ID = 50167-50DIW Mean = 9.78 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 50167-50171 Mean = 9.56 % Relative Standard Deviation = 12.7 Number of Observations = 4 Blind Sample ID = 50165-50169 Mean = 16.43 % Relative Standard Deviation = 5.1 Number of Observations = 4 Blind Sample ID = 50165-50167 Mean = 17.38 % Relative Standard Deviation = 6.5 Number of Observations = 4 Blind Sample ID = 50163-50DIW Mean = 9.57 % Relative Standard Deviation = 22.3 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 7.98 % Relative Standard Deviation = 9.8 Number of Observations = 12 Blind Sample ID = 50157-50DIW Mean = 12.59 % Relative Standard Deviation = 15.1 Number of Observations = 13 Blind Sample ID = 50155-50DIW Mean = 42.99 % Relative Standard Deviation = 7.2 Number of Observations = 22 Blind Sample ID = 50143-50151 Mean = 21.16 % Relative Standard Deviation = 10.2 Number of Observations = 22 Blind Sample ID = 50143-50145 Mean = 8.32 % Relative Standard Deviation = 15.7 Number of Observations = 5 Blind Sample ID = 50139-50145 Mean = 11.49 % Relative Standard Deviation = 15.7 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 33.03 % Relative Standard Deviation = 7.1 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 19.33 % Relative Standard Deviation = 8.1 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 30.12 % Relative Standard Deviation = 5.2 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 6.08 % Relative Standard Deviation = 6.7 Number of Observations = 24 Blind Sample ID = 50123-50121 Mean = 6.08 % Relative Standard Deviation = 6.7 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 6.11 % Relative Standard Deviation = 6.3 Number of Observations = 44 Blind Sample ID = 50121-50105 Mean = 28.00 % Relative Standard Deviation = 4.3 Number of Observations = 47 Blind Sample ID = 50115-50103 Mean = 6.15 % Relative Standard Deviation = 6.7 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 27.07 % Relative Standard Deviation = 5.7 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 6.00 % Relative Standard Deviation = 0.0 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 43.41 % Relative Standard Deviation = 6.4 Number of Observations = 33 Blind Sample ID = 25DIW-75151 Mean = 38.35 % Relative Standard Deviation = 5.4 Number of Observations = 17 Blind Sample ID = 25DIW-75135 Mean = 24.17 % Relative Standard Deviation = 6.5 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 1.68 % Relative Standard Deviation = 15.1 Number of Observations = 3 Blind Sample ID = 25179-75177 Mean = 2.67 % Relative Standard Deviation = 9.2 Number of Observations = 4 Blind Sample ID = 25177-75175 Mean = 2.82 % Relative Standard Deviation = 9.9 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 15.12 % Relative Standard Deviation = 4.4 Number of Observations = 4 Blind Sample ID = 25169-75167 Mean = 4.30 % Relative Standard Deviation = 6.0 Number of Observations = 4 Blind Sample ID = 25165-75DIW Mean = 14.04 % Relative Standard Deviation = 12.3 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 14.23 % Relative Standard Deviation = 18.1 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 19.21 % Relative Standard Deviation = 13.0 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 18.33 % Relative Standard Deviation = 20.4 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 12.14 % Relative Standard Deviation = 16.9 Number of Observations = 26 Blind Sample ID = 25147-75145 Mean = 6.46 % Relative Standard Deviation = 10.0 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 11.61 % Relative Standard Deviation = 18.9 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 11.69 % Relative Standard Deviation = 13.2 Number of Observations = 16 Blind Sample ID = 25133-75127 Mean = 7.50 % Relative Standard Deviation = 24.3 Number of Observations = 42 Blind Sample ID = 25127-75125 Mean = 9.15 % Relative Standard Deviation = 14.4 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 8.02 % Relative Standard Deviation = 17.7 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 8.67 % Relative Standard Deviation = 21.7 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 7.88 % Relative Standard Deviation = 16.1 Number of Observations = 40 Blind Sample ID = 25117-75113 Mean = 10.56 % Relative Standard Deviation = 10.4 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 20.20 % Relative Standard Deviation = 39.8 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Vanadium, FIL, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01085, MCode: PLM10
Dates: 11/15/05 through 09/19/06
Open Data Set

Mean = 2.16 % Relative Standard Deviation = 27.9 Number of Observations = 19 Blind Sample ID = 75179-25DIW Mean = 2.14 % Relative Standard Deviation = 3.7 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 1.91 % Relative Standard Deviation = 3.1 Number of Observations = 15 Blind Sample ID = 50177-50179 Mean = 1.46 % Relative Standard Deviation = 4.7 Number of Observations = 17 Blind Sample ID = 50175-50DIW Mean = 2.10 % Relative Standard Deviation = 5.2 Number of Observations = 5 Blind Sample ID = 50173-50DIW Mean = 1.55 % Relative Standard Deviation = 3.8 Number of Observations = 20 Blind Sample ID = 25179-75177 Mean = 2.39 % Relative Standard Deviation = 5.2 Number of Observations = 21 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Zinc, FIL, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01090, MCode: AA039
Dates: 10/03/91 through 03/27/96
Open Data Set

Mean = 19.00 % Relative Standard Deviation = 16.6 Number of Observations = 10 Blind Sample ID = 67DW-33113 Mean = 213.33 % Relative Standard Deviation = 2.7 Number of Observations = 3 Blind Sample ID = 50115-50103 Mean = 270.00 % Relative Standard Deviation = 0.0 Number of Observations = 3 Blind Sample ID = 33DW-67115 Mean = 35.00 % Relative Standard Deviation = 16.5 Number of Observations = 4 Blind Sample ID = 33DIW-67135 Mean = 49.17 % Relative Standard Deviation = 5.9 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 37.50 % Relative Standard Deviation = 13.3 Number of Observations = 4 Blind Sample ID = 25DIW-75135 Mean = 57.27 % Relative Standard Deviation = 11.3 Number of Observations = 11 Blind Sample ID = 25DIW-75131 Mean = 43.33 % Relative Standard Deviation = 13.3 Number of Observations = 3 Blind Sample ID = 25133-75127 Mean = 30.00 % Relative Standard Deviation = 31.8 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Zinc, FIL, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01090, MCode: PLM43
Dates: 02/07/94 through 07/19/06
Open Data Set

Mean = 215.11 % Relative Standard Deviation = 2.9 Number of Observations = 34 Blind Sample ID = GT3 Mean = 19.75 % Relative Standard Deviation = 3.7 Number of Observations = 16 Blind Sample ID = 75DIW-25155 Mean = 5.57 % Relative Standard Deviation = 13.4 Number of Observations = 16 Blind Sample ID = 75DIW-25139 Mean = 13.83 % Relative Standard Deviation = 6.2 Number of Observations = 32 Blind Sample ID = 75DIW-25137 Mean = 4.56 % Relative Standard Deviation = 17.8 Number of Observations = 16 Blind Sample ID = 75DIW-25125 Mean = 6.78 % Relative Standard Deviation = 7.1 Number of Observations = 15 Blind Sample ID = 75179-25DIW Mean = 54.44 % Relative Standard Deviation = 4.8 Number of Observations = 11 Blind Sample ID = 75175-25DIW Mean = 16.37 % Relative Standard Deviation = 4.8 Number of Observations = 24 Blind Sample ID = 75169-25DIW Mean = 5.65 % Relative Standard Deviation = 5.3 Number of Observations = 28 Blind Sample ID = 50DIW-50145 Mean = 11.80 % Relative Standard Deviation = 5.9 Number of Observations = 32 Blind Sample ID = 50DIW-50143 Mean = 29.89 % Relative Standard Deviation = 3.4 Number of Observations = 16 Blind Sample ID = 50DIW-50135 Mean = 157.42 % Relative Standard Deviation = 4.2 Number of Observations = 10 Blind Sample ID = 50177-50179 Mean = 36.45 % Relative Standard Deviation = 6.8 Number of Observations = 33 Blind Sample ID = 50175-50DIW Mean = 204.15 % Relative Standard Deviation = 5.4 Number of Observations = 20 Blind Sample ID = 50175-50173 Mean = 166.45 % Relative Standard Deviation = 6.3 Number of Observations = 24 Blind Sample ID = 50173-50DIW Mean = 3.81 % Relative Standard Deviation = 8.8 Number of Observations = 48 Blind Sample ID = 50171-50DIW Mean = 169.50 % Relative Standard Deviation = 6.1 Number of Observations = 20 Blind Sample ID = 50171-50173 Mean = 3.00 % Relative Standard Deviation = 7.5 Number of Observations = 24 Blind Sample ID = 50167-50DIW Mean = 5.16 % Relative Standard Deviation = 8.4 Number of Observations = 24 Blind Sample ID = 50167-50171 Mean = 23.80 % Relative Standard Deviation = 8.1 Number of Observations = 24 Blind Sample ID = 50165-50169 Mean = 17.59 % Relative Standard Deviation = 4.9 Number of Observations = 24 Blind Sample ID = 50165-50167 Mean = 11.79 % Relative Standard Deviation = 8.8 Number of Observations = 24 Blind Sample ID = 50163-50DIW Mean = 22.45 % Relative Standard Deviation = 6.8 Number of Observations = 24 Blind Sample ID = 50161-50DIW Mean = 15.22 % Relative Standard Deviation = 4.5 Number of Observations = 24 Blind Sample ID = 50157-50DIW Mean = 29.02 % Relative Standard Deviation = 5.5 Number of Observations = 24 Blind Sample ID = 50155-50DIW Mean = 15.26 % Relative Standard Deviation = 2.9 Number of Observations = 28 Blind Sample ID = 50143-50151 Mean = 17.51 % Relative Standard Deviation = 4.7 Number of Observations = 32 Blind Sample ID = 50143-50145 Mean = 48.00 % Relative Standard Deviation = 2.0 Number of Observations = 16 Blind Sample ID = 50135-50137 Mean = 30.00 % Relative Standard Deviation = 4.2 Number of Observations = 15 Blind Sample ID = 50125-50133 Mean = 9.16 % Relative Standard Deviation = 49.5 Number of Observations = 31 Blind Sample ID = 50125-50123 Mean = 220.96 % Relative Standard Deviation = 5.7 Number of Observations = 12 Blind Sample ID = 25179-75177 Mean = 130.99 % Relative Standard Deviation = 7.0 Number of Observations = 16 Blind Sample ID = 25177-75175 Mean = 54.76 % Relative Standard Deviation = 5.2 Number of Observations = 16 Blind Sample ID = 25171-75175 Mean = 9.15 % Relative Standard Deviation = 12.3 Number of Observations = 96 Blind Sample ID = 25169-75167 Mean = 16.71 % Relative Standard Deviation = 3.0 Number of Observations = 24 Blind Sample ID = 25167-75169 Mean = 8.33 % Relative Standard Deviation = 7.0 Number of Observations = 24 Blind Sample ID = 25165-75DIW Mean = 25.57 % Relative Standard Deviation = 7.2 Number of Observations = 24 Blind Sample ID = 25161-75159 Mean = 22.65 % Relative Standard Deviation = 4.7 Number of Observations = 23 Blind Sample ID = 25157-75159 Mean = 68.82 % Relative Standard Deviation = 4.6 Number of Observations = 16 Blind Sample ID = 25155-75153 Mean = 45.84 % Relative Standard Deviation = 5.1 Number of Observations = 20 Blind Sample ID = 25151-75155 Mean = 14.43 % Relative Standard Deviation = 2.9 Number of Observations = 26 Blind Sample ID = 25145-75147 Mean = 26.39 % Relative Standard Deviation = 4.3 Number of Observations = 46 Blind Sample ID = 25125-75127 Mean = 43.69 % Relative Standard Deviation = 3.2 Number of Observations = 16 Blind Sample ID = 25125-75113
The SGPlot Procedure


- Zinc, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01090, MCode: PLA11
Dates: 10/02/91 through 09/29/05
Open Data Set

Mean = 6.74 % Relative Standard Deviation = 13.0 Number of Observations = 32 Blind Sample ID = 75171-25DIW Mean = 17.62 % Relative Standard Deviation = 18.1 Number of Observations = 8 Blind Sample ID = 75169-25DIW Mean = 24.26 % Relative Standard Deviation = 17.2 Number of Observations = 46 Blind Sample ID = 67DW-33113 Mean = 10.03 % Relative Standard Deviation = 33.1 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 27.44 % Relative Standard Deviation = 11.7 Number of Observations = 8 Blind Sample ID = 50DIW-50137 Mean = 30.11 % Relative Standard Deviation = 15.5 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 38.22 % Relative Standard Deviation = 4.4 Number of Observations = 7 Blind Sample ID = 50175-50DIW Mean = 223.21 % Relative Standard Deviation = 2.3 Number of Observations = 8 Blind Sample ID = 50175-50173 Mean = 182.37 % Relative Standard Deviation = 3.2 Number of Observations = 7 Blind Sample ID = 50173-50DIW Mean = 4.81 % Relative Standard Deviation = 10.6 Number of Observations = 7 Blind Sample ID = 50171-50DIW Mean = 193.38 % Relative Standard Deviation = 4.6 Number of Observations = 4 Blind Sample ID = 50171-50173 Mean = 5.46 % Relative Standard Deviation = 27.0 Number of Observations = 15 Blind Sample ID = 50167-50171 Mean = 23.81 % Relative Standard Deviation = 12.0 Number of Observations = 6 Blind Sample ID = 50165-50169 Mean = 18.15 % Relative Standard Deviation = 4.2 Number of Observations = 8 Blind Sample ID = 50165-50167 Mean = 20.37 % Relative Standard Deviation = 30.8 Number of Observations = 3 Blind Sample ID = 50163-50DIW Mean = 23.74 % Relative Standard Deviation = 11.3 Number of Observations = 4 Blind Sample ID = 50161-50DIW Mean = 15.55 % Relative Standard Deviation = 22.1 Number of Observations = 11 Blind Sample ID = 50157-50DIW Mean = 34.00 % Relative Standard Deviation = 9.4 Number of Observations = 13 Blind Sample ID = 50155-50DIW Mean = 18.71 % Relative Standard Deviation = 23.5 Number of Observations = 19 Blind Sample ID = 50143-50151 Mean = 21.79 % Relative Standard Deviation = 18.1 Number of Observations = 9 Blind Sample ID = 50143-50145 Mean = 12.31 % Relative Standard Deviation = 11.5 Number of Observations = 4 Blind Sample ID = 50139-50145 Mean = 144.06 % Relative Standard Deviation = 5.1 Number of Observations = 28 Blind Sample ID = 50137-50141 Mean = 50.63 % Relative Standard Deviation = 9.3 Number of Observations = 34 Blind Sample ID = 50135-50137 Mean = 41.08 % Relative Standard Deviation = 9.8 Number of Observations = 48 Blind Sample ID = 50131-50125 Mean = 31.36 % Relative Standard Deviation = 14.7 Number of Observations = 25 Blind Sample ID = 50125-50135 Mean = 14.83 % Relative Standard Deviation = 20.0 Number of Observations = 30 Blind Sample ID = 50123-50121 Mean = 15.63 % Relative Standard Deviation = 18.7 Number of Observations = 24 Blind Sample ID = 50121-50125 Mean = 57.58 % Relative Standard Deviation = 6.3 Number of Observations = 60 Blind Sample ID = 50121-50105 Mean = 207.50 % Relative Standard Deviation = 3.2 Number of Observations = 60 Blind Sample ID = 50115-50103 Mean = 135.00 % Relative Standard Deviation = 5.9 Number of Observations = 48 Blind Sample ID = 50105-50117 Mean = 53.43 % Relative Standard Deviation = 5.3 Number of Observations = 46 Blind Sample ID = 50103-50101 Mean = 6.38 % Relative Standard Deviation = 33.5 Number of Observations = 8 Blind Sample ID = 33DW-67123 Mean = 12.92 % Relative Standard Deviation = 12.0 Number of Observations = 13 Blind Sample ID = 33DW-67121 Mean = 258.46 % Relative Standard Deviation = 4.4 Number of Observations = 13 Blind Sample ID = 33DW-67115 Mean = 33.75 % Relative Standard Deviation = 14.2 Number of Observations = 4 Blind Sample ID = 33DIW-67135 Mean = 15.87 % Relative Standard Deviation = 18.3 Number of Observations = 23 Blind Sample ID = 25DW-75121 Mean = 21.48 % Relative Standard Deviation = 5.9 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 15.29 % Relative Standard Deviation = 17.8 Number of Observations = 8 Blind Sample ID = 25DIW-75159 Mean = 56.35 % Relative Standard Deviation = 6.4 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 11.42 % Relative Standard Deviation = 23.4 Number of Observations = 9 Blind Sample ID = 25DIW-75151 Mean = 15.40 % Relative Standard Deviation = 28.8 Number of Observations = 7 Blind Sample ID = 25DIW-75147 Mean = 18.46 % Relative Standard Deviation = 25.6 Number of Observations = 13 Blind Sample ID = 25DIW-75143 Mean = 38.92 % Relative Standard Deviation = 10.5 Number of Observations = 28 Blind Sample ID = 25DIW-75135 Mean = 57.11 % Relative Standard Deviation = 6.7 Number of Observations = 18 Blind Sample ID = 25DIW-75131 Mean = 59.92 % Relative Standard Deviation = 3.1 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 23.45 % Relative Standard Deviation = 10.3 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 27.91 % Relative Standard Deviation = 2.8 Number of Observations = 4 Blind Sample ID = 25161-75159 Mean = 37.89 % Relative Standard Deviation = 13.7 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 53.95 % Relative Standard Deviation = 9.8 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 26.73 % Relative Standard Deviation = 10.6 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 39.94 % Relative Standard Deviation = 11.9 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 75.74 % Relative Standard Deviation = 9.8 Number of Observations = 12 Blind Sample ID = 25155-75153 Mean = 26.20 % Relative Standard Deviation = 15.0 Number of Observations = 12 Blind Sample ID = 25155-75147 Mean = 47.42 % Relative Standard Deviation = 5.5 Number of Observations = 8 Blind Sample ID = 25151-75155 Mean = 14.17 % Relative Standard Deviation = 36.7 Number of Observations = 20 Blind Sample ID = 25147-75145 Mean = 16.06 % Relative Standard Deviation = 20.7 Number of Observations = 7 Blind Sample ID = 25145-75147 Mean = 63.95 % Relative Standard Deviation = 7.0 Number of Observations = 34 Blind Sample ID = 25141-75139 Mean = 40.75 % Relative Standard Deviation = 12.7 Number of Observations = 24 Blind Sample ID = 25139-75137 Mean = 39.30 % Relative Standard Deviation = 12.5 Number of Observations = 20 Blind Sample ID = 25133-75127 Mean = 15.66 % Relative Standard Deviation = 23.9 Number of Observations = 41 Blind Sample ID = 25127-75125 Mean = 27.51 % Relative Standard Deviation = 15.4 Number of Observations = 41 Blind Sample ID = 25125-75127 Mean = 47.09 % Relative Standard Deviation = 8.3 Number of Observations = 46 Blind Sample ID = 25125-75113 Mean = 27.67 % Relative Standard Deviation = 10.7 Number of Observations = 24 Blind Sample ID = 25123-75127 Mean = 92.07 % Relative Standard Deviation = 5.4 Number of Observations = 41 Blind Sample ID = 25117-75113 Mean = 60.92 % Relative Standard Deviation = 5.9 Number of Observations = 39 Blind Sample ID = 25101-75113 Mean = 55.00 % Relative Standard Deviation = 16.6 Number of Observations = 5 Blind Sample ID =
The SGPlot Procedure


- Zinc, FIL, cICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01090, MCode: PLM10
Dates: 11/15/05 through 09/19/06
Open Data Set

Mean = 6.36 % Relative Standard Deviation = 7.3 Number of Observations = 4 Blind Sample ID = 75179-25DIW Mean = 53.52 % Relative Standard Deviation = 4.0 Number of Observations = 4 Blind Sample ID = 75175-25DIW Mean = 152.12 % Relative Standard Deviation = 2.7 Number of Observations = 5 Blind Sample ID = 50177-50179 Mean = 35.22 % Relative Standard Deviation = 4.1 Number of Observations = 6 Blind Sample ID = 50175-50DIW Mean = 167.70 % Relative Standard Deviation = 12.8 Number of Observations = 4 Blind Sample ID = 50173-50DIW Mean = 216.67 % Relative Standard Deviation = 1.7 Number of Observations = 8 Blind Sample ID = 25179-75177 Mean = 121.50 % Relative Standard Deviation = 5.2 Number of Observations = 5 Blind Sample ID = 25177-75175
The SGPlot Procedure


- Zinc, UNF, AA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01092, MCode: AA071
Dates: 10/03/91 through 03/12/99
Open Data Set

Mean = 14.70 % Relative Standard Deviation = 4.6 Number of Observations = 10 Blind Sample ID = 75DIW-25137 Mean = 25.26 % Relative Standard Deviation = 27.2 Number of Observations = 38 Blind Sample ID = 67DW-33113 Mean = 10.91 % Relative Standard Deviation = 27.6 Number of Observations = 11 Blind Sample ID = 50DW-50125 Mean = 95.00 % Relative Standard Deviation = 5.5 Number of Observations = 12 Blind Sample ID = 50DW-50117 Mean = 44.44 % Relative Standard Deviation = 11.9 Number of Observations = 9 Blind Sample ID = 50DW-50101 Mean = 13.50 % Relative Standard Deviation = 26.6 Number of Observations = 8 Blind Sample ID = 50DIW-50143 Mean = 10.80 % Relative Standard Deviation = 12.1 Number of Observations = 5 Blind Sample ID = 50DIW-50139 Mean = 26.38 % Relative Standard Deviation = 20.4 Number of Observations = 16 Blind Sample ID = 50DIW-50137 Mean = 29.75 % Relative Standard Deviation = 3.0 Number of Observations = 8 Blind Sample ID = 50DIW-50135 Mean = 18.13 % Relative Standard Deviation = 20.9 Number of Observations = 8 Blind Sample ID = 50143-50145 Mean = 12.13 % Relative Standard Deviation = 5.3 Number of Observations = 8 Blind Sample ID = 50139-50145 Mean = 113.61 % Relative Standard Deviation = 4.1 Number of Observations = 18 Blind Sample ID = 50139-50141 Mean = 136.63 % Relative Standard Deviation = 4.1 Number of Observations = 8 Blind Sample ID = 50137-50141 Mean = 31.63 % Relative Standard Deviation = 6.4 Number of Observations = 16 Blind Sample ID = 50135-50139 Mean = 48.25 % Relative Standard Deviation = 7.2 Number of Observations = 8 Blind Sample ID = 50135-50137 Mean = 30.00 % Relative Standard Deviation = 0.0 Number of Observations = 13 Blind Sample ID = 50125-50133 Mean = 10.74 % Relative Standard Deviation = 24.8 Number of Observations = 27 Blind Sample ID = 50125-50123 Mean = 18.75 % Relative Standard Deviation = 34.2 Number of Observations = 8 Blind Sample ID = 50123-50121 Mean = 63.13 % Relative Standard Deviation = 9.5 Number of Observations = 16 Blind Sample ID = 50121-50105 Mean = 98.00 % Relative Standard Deviation = 12.5 Number of Observations = 10 Blind Sample ID = 50117-50121 Mean = 218.13 % Relative Standard Deviation = 6.3 Number of Observations = 16 Blind Sample ID = 50115-50103 Mean = 226.36 % Relative Standard Deviation = 5.7 Number of Observations = 11 Blind Sample ID = 50101-50115 Mean = 11.43 % Relative Standard Deviation = 31.2 Number of Observations = 28 Blind Sample ID = 33DW-67123 Mean = 16.43 % Relative Standard Deviation = 38.6 Number of Observations = 14 Blind Sample ID = 33DW-67121 Mean = 268.13 % Relative Standard Deviation = 3.4 Number of Observations = 16 Blind Sample ID = 33DW-67115 Mean = 31.25 % Relative Standard Deviation = 20.5 Number of Observations = 8 Blind Sample ID = 33DIW-67135 Mean = 50.00 % Relative Standard Deviation = 12.1 Number of Observations = 12 Blind Sample ID = 33DIW-67131 Mean = 50.00 % Relative Standard Deviation = 13.7 Number of Observations = 18 Blind Sample ID = 33127-67133 Mean = 18.00 % Relative Standard Deviation = 22.8 Number of Observations = 20 Blind Sample ID = 33127-67123 Mean = 48.41 % Relative Standard Deviation = 14.7 Number of Observations = 44 Blind Sample ID = 25DW-75113 Mean = 82.31 % Relative Standard Deviation = 8.8 Number of Observations = 13 Blind Sample ID = 25DW-75105 Mean = 17.75 % Relative Standard Deviation = 14.0 Number of Observations = 12 Blind Sample ID = 25DIW-75143 Mean = 40.25 % Relative Standard Deviation = 14.0 Number of Observations = 16 Blind Sample ID = 25DIW-75135 Mean = 58.33 % Relative Standard Deviation = 6.7 Number of Observations = 12 Blind Sample ID = 25DIW-75131 Mean = 26.30 % Relative Standard Deviation = 25.9 Number of Observations = 54 Blind Sample ID = 25DIW-75127 Mean = 13.17 % Relative Standard Deviation = 14.7 Number of Observations = 6 Blind Sample ID = 25147-75145 Mean = 14.50 % Relative Standard Deviation = 6.9 Number of Observations = 4 Blind Sample ID = 25145-75147 Mean = 61.88 % Relative Standard Deviation = 5.5 Number of Observations = 8 Blind Sample ID = 25141-75139 Mean = 41.57 % Relative Standard Deviation = 6.6 Number of Observations = 14 Blind Sample ID = 25139-75137 Mean = 47.64 % Relative Standard Deviation = 6.9 Number of Observations = 14 Blind Sample ID = 25137-75135 Mean = 37.14 % Relative Standard Deviation = 20.4 Number of Observations = 7 Blind Sample ID = 25133-75127 Mean = 30.00 % Relative Standard Deviation = 16.9 Number of Observations = 40 Blind Sample ID = 25125-75127 Mean = 51.50 % Relative Standard Deviation = 9.5 Number of Observations = 20 Blind Sample ID = 25125-75113 Mean = 29.17 % Relative Standard Deviation = 22.9 Number of Observations = 12 Blind Sample ID = 25123-75127
The SGPlot Procedure


- Zinc, UNF, ICP-MS -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01092, MCode: PLM48
Dates: 10/15/01 through 09/19/06
Open Data Set

Mean = 6.46 % Relative Standard Deviation = 5.7 Number of Observations = 20 Blind Sample ID = 75179-25DIW Mean = 50.26 % Relative Standard Deviation = 5.6 Number of Observations = 15 Blind Sample ID = 75175-25DIW Mean = 5.58 % Relative Standard Deviation = 16.3 Number of Observations = 16 Blind Sample ID = 75171-25DIW Mean = 15.32 % Relative Standard Deviation = 3.1 Number of Observations = 16 Blind Sample ID = 75169-25DIW Mean = 146.29 % Relative Standard Deviation = 5.1 Number of Observations = 18 Blind Sample ID = 50177-50179 Mean = 34.11 % Relative Standard Deviation = 3.5 Number of Observations = 23 Blind Sample ID = 50175-50DIW Mean = 192.54 % Relative Standard Deviation = 4.0 Number of Observations = 19 Blind Sample ID = 50175-50173 Mean = 165.83 % Relative Standard Deviation = 4.4 Number of Observations = 21 Blind Sample ID = 50173-50DIW Mean = 3.88 % Relative Standard Deviation = 8.5 Number of Observations = 12 Blind Sample ID = 50171-50DIW Mean = 161.13 % Relative Standard Deviation = 6.4 Number of Observations = 16 Blind Sample ID = 50171-50173 Mean = 2.93 % Relative Standard Deviation = 11.4 Number of Observations = 15 Blind Sample ID = 50167-50DIW Mean = 4.69 % Relative Standard Deviation = 11.4 Number of Observations = 8 Blind Sample ID = 50167-50171 Mean = 11.71 % Relative Standard Deviation = 7.6 Number of Observations = 7 Blind Sample ID = 50163-50DIW Mean = 22.42 % Relative Standard Deviation = 1.8 Number of Observations = 8 Blind Sample ID = 50161-50DIW Mean = 20.19 % Relative Standard Deviation = 4.6 Number of Observations = 8 Blind Sample ID = 25DIW-75163 Mean = 208.05 % Relative Standard Deviation = 4.3 Number of Observations = 20 Blind Sample ID = 25179-75177 Mean = 120.08 % Relative Standard Deviation = 4.8 Number of Observations = 23 Blind Sample ID = 25177-75175 Mean = 51.77 % Relative Standard Deviation = 6.2 Number of Observations = 20 Blind Sample ID = 25171-75175 Mean = 8.27 % Relative Standard Deviation = 3.8 Number of Observations = 15 Blind Sample ID = 25165-75DIW
The SGPlot Procedure


- Zinc, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 01092, MCode: PLA15
Dates: 04/05/99 through 09/07/06
Open Data Set

Mean = 21.93 % Relative Standard Deviation = 19.4 Number of Observations = 13 Blind Sample ID = 75DIW-25155 Mean = 55.78 % Relative Standard Deviation = 1.4 Number of Observations = 4 Blind Sample ID = 75175-25DIW Mean = 6.79 % Relative Standard Deviation = 11.9 Number of Observations = 30 Blind Sample ID = 75171-25DIW Mean = 22.52 % Relative Standard Deviation = 45.0 Number of Observations = 5 Blind Sample ID = 75169-25DIW Mean = 37.74 % Relative Standard Deviation = 1.9 Number of Observations = 9 Blind Sample ID = 50175-50DIW Mean = 199.03 % Relative Standard Deviation = 4.0 Number of Observations = 4 Blind Sample ID = 50175-50173 Mean = 172.33 % Relative Standard Deviation = 2.5 Number of Observations = 4 Blind Sample ID = 50173-50DIW Mean = 5.75 % Relative Standard Deviation = 15.9 Number of Observations = 8 Blind Sample ID = 50171-50DIW Mean = 6.16 % Relative Standard Deviation = 7.8 Number of Observations = 15 Blind Sample ID = 50167-50171 Mean = 21.31 % Relative Standard Deviation = 12.8 Number of Observations = 6 Blind Sample ID = 50165-50169 Mean = 22.16 % Relative Standard Deviation = 28.3 Number of Observations = 7 Blind Sample ID = 50165-50167 Mean = 20.47 % Relative Standard Deviation = 22.6 Number of Observations = 11 Blind Sample ID = 50163-50DIW Mean = 23.83 % Relative Standard Deviation = 22.3 Number of Observations = 10 Blind Sample ID = 50161-50DIW Mean = 16.96 % Relative Standard Deviation = 7.9 Number of Observations = 4 Blind Sample ID = 50157-50DIW Mean = 28.95 % Relative Standard Deviation = 11.1 Number of Observations = 4 Blind Sample ID = 50155-50DIW Mean = 24.12 % Relative Standard Deviation = 36.9 Number of Observations = 12 Blind Sample ID = 25DIW-75163 Mean = 21.74 % Relative Standard Deviation = 22.4 Number of Observations = 12 Blind Sample ID = 25DIW-75159 Mean = 54.64 % Relative Standard Deviation = 19.0 Number of Observations = 8 Blind Sample ID = 25DIW-75153 Mean = 20.57 % Relative Standard Deviation = 20.7 Number of Observations = 12 Blind Sample ID = 25DIW-75147 Mean = 219.65 % Relative Standard Deviation = 3.3 Number of Observations = 4 Blind Sample ID = 25179-75177 Mean = 127.73 % Relative Standard Deviation = 1.1 Number of Observations = 4 Blind Sample ID = 25177-75175 Mean = 56.07 % Relative Standard Deviation = 3.3 Number of Observations = 12 Blind Sample ID = 25171-75175 Mean = 30.65 % Relative Standard Deviation = 34.1 Number of Observations = 8 Blind Sample ID = 25163-75159 Mean = 24.56 % Relative Standard Deviation = 26.9 Number of Observations = 3 Blind Sample ID = 25161-75159 Mean = 45.22 % Relative Standard Deviation = 29.9 Number of Observations = 8 Blind Sample ID = 25159-75161 Mean = 47.68 % Relative Standard Deviation = 9.0 Number of Observations = 7 Blind Sample ID = 25159-75155 Mean = 23.30 % Relative Standard Deviation = 16.8 Number of Observations = 12 Blind Sample ID = 25157-75159 Mean = 34.48 % Relative Standard Deviation = 16.2 Number of Observations = 8 Blind Sample ID = 25155-75157 Mean = 25.68 % Relative Standard Deviation = 22.2 Number of Observations = 9 Blind Sample ID = 25155-75147 Mean = 44.46 % Relative Standard Deviation = 16.9 Number of Observations = 8 Blind Sample ID = 25151-75155
The SGPlot Procedure