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ICPMS daily performance check report, April 10, 2002

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Daily instrument performance verification log for ICPMS analysis including intensity and standard deviation data for multiple elements.

NYC-WTC_000040452–000040596

Folder label: “ICPMS 4/10/02

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: ICV STD1 30 PPB Sample Date/Time: Wednesday, April 10, 2002 09:50:18 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\ICV STD1 30 PPB.423 Aliquot Volume (mL): Diluted To Volume (mL):

Concentration Results Analyte Mass Meas. Intens. Mean Meas. Intens. RSD Net Intens. Mean Cone. Mean Cone. RSD Sample Unit Be 9 14918.049 1.893 0.028 29.95605 1.31 ug/L Se-1 45 540644.961 1.631 540644.961 ug/L Cr 52 301306.354 0.890 0.544 29.61747 1.13 ug/L Cr 53 35603.948 1.393 0.064 29.71268 1.72 ug/L Mn 55 469979.411 0.479 0.864 29.35685 1.16 ug/L Ni 60 71762.280 2.376 0.133 28.85359 3.07 ug/L Cu 63 168070.548 1.241 0.310 29.26689 2.69 ug/L Cu 65 81582.660 1.876 0.151 29.17425 2.31 ug/L Zn 66 53490.794 1.372 0.513 29.64640 1.39 ug/L Zn 67 9527.419 1.347 0.091 29.76238 1.96 ug/L Zn 68 40321.633 1.157 0.387 30.38184 0.97 ug/L Ge 72 102604.492 0.919 102604.492 ug/L As 75 62716.394 0.839 0.608 30.34910 0.59 ug/L Se 77 5374.643 2.826 0.051 30.31525 3.05 ug/L Se 82 7119.858 1.050 0.067 29.75657 0.69 ug/L Ag 107 339259.946 1.490 0.237 29.27321 2.64 ug/L > In 115 1428903.106 3.316 1428903.106 ug/L Sb 121 289568.530 0.885 0.203 29.94386 2.61 ug/L Sb 123 222948.028 1.433 0.156 29.67906 2.22 ug/L Ba 135 85608.851 2.241 0.044 29.69094 1.29 ug/L Ba 137 148322.154 1.469 0.077 29.51489 0.48 ug/L Ho 165 1920292.568 1.028 0.137 ug/L > Tb 159 1927257.914 1.576 1927257.914 ug/L n 205 803441.623 1.246 0.416 30.22446 0.98 ug/L Pb 208 1093354.383 1.288 0.566 30.36434 1.97 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ’ Be 9 > Sc-1 45 96.103 Cr 52 Cr 53 Mn 55 Ni 60 Cu 63

Sample ID: ICV STD1 30PPB Report Date/Time: Wednesday, April 10, 2002 09:52:33 Page 1

NYC-WTC_000040461

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NYC-WTC_000040461Source: NYC Law Department, mirrored locally

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