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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 STD2 60 PPB Sample Date/Time: Wednesday, April 10, 2002 09:53:40 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 STD2 60 PPB.424 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 28869.724 0.792 0.055 59.63103 0.42 ug/L Se-1 45 525758.350 0.577 525758.350 ug/L Cr 52 584817.981 2.060 1.099 59.84891 1.57 ug/L Cr 53 69714.354 1.545 0.131 60.54814 1.38 ug/L Mn 55 938675.137 0.260 1.780 60.47423 0.68 ug/L Ni 60 146124.782 2.018 0.278 60.41231 1.46 ug/L Cu 63 330702.269 2.362 0.628 59.32030 1.90 ug/L Cu 65 164810.136 1.833 0.313 60.63138 1.29 ug/L Zn 66 105463.639 1.033 1.043 60.26391 2.15 ug/L Zn 67 18589.510 1.797 . 0.184 59.92735 2.02 ug/L Zn 68 78582.311 0.997 0.777 61.03575 1.21 ug/L Ge 72 100346.214 1.718 100346.214 ug/L As 75 122557.220 2.734 1.218 60.79432 1.29 ug/L Se 77 10389.041 3.355 0.102 60.71402 2.79 ug/L Se 82 14207.574 2.601 0.140 61.64198 1.09 ug/L Ag 107 685750.913 1.236 0.487 60.19844 0.76 ug/L > In 115 1405522.523 0.624 1405522.523 ug/L Sb 121 566318.322 0.926 0.403 59.50752 0.81 ug/L Sb 123 440036.105 0.565 0.313 59.52997 0.58 ug/L Ba 135 169574.304 1.863 0.088 58.71243 1.14 ug/L Ba 137 296083.307 0.442 0.153 58.82026 1.38 ug/L Ho 165 1914063.484 0.927 0.131 ug/L Tb 159 1931193.905 1.287 1931193.905 ug/L TI 205 1571592.942 0.918 0.813 59.03455 1.51 ug/L Pb 208 2122494.977 1.167 1.098 58.87144 0.89 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ‘ Be 9 > Se-1 45 93.457 Cr 52 Cr 53 Mn 55 Ni 60 Cu 63

Sample ID: ICV STD2 60PPB Report Date/Time: Wednesday, April 10, 2002 09:55:46 Page 1

NYC-WTC_000040463

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