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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: CCV STD2 60 PPB Sample Date/Time: Wednesday, April 10, 2002 11:03:07 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\lelandatalDatasetNEWQ\NEWQ\CCV STD2 60 PPB.442 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 28660.404 1.897 0.057 61.96741 2.07 ug/L > Se-1 45 502291.782 0.560 502291.782 ug/L Cr 52 562844.227 0.953 1.107 60.29980 0.79 ug/L Cr 53 66008.472 1.590 0.130 59.99956 1.04 ug/L Mn 55 875918.759 0.646 1.739 59.06183 0.13 ug/L Ni 60 136606.804 3.289 0.272 59.11378 2.82 ug/L Cu 63 313706.869 0.877 0.623 58.90412 1.01 ug/L Cu 65 155087.891 0.123 0.309 59.72338 0.45 ug/L Zn 66 101210.668 1.156 1.048 60.55202 1.34 ug/L Zn 67 17766.521 0.210 0.184 59.96973 0.59 ug/L Zn 68 74577.399 0.593 0.772 60.64893 1.00 ug/L Ge 72 95826.359 0.403 95826.359 ug/L As 75 115262.387 0.320 1.200 59.87687 0.68 ug/L Se 77 9863.780 0.189 0.102 60.36097 0.39 ug/L Se 82 13057.837 1.701 0.134 59.29967 2.00 ug/L Ag 107 636643.427 2.462 0.478 59.00478 0.55 ug/L > In 115 1331188.556 2.025 1331188.556 ug/L Sb 121 543201.448 0.951 0.408 60.27680 1.58 ug/L Sb 123 417524.668 1.505 0.314 59.64391 1.11 ug/L Ba 135 157537.208 0.750 0.089 59.24951 1.05 ug/L Ba 137 272871.029 0.105 0.153 58.87787 1.01 ug/L Ho 165 1778147.506 0.658 0.140 ug/L > Tb 159 1777960.807 0.907 1777960.807 ug/L TI 205 1471193.493 1.899 0.827 60.02144 1.80 ug/L Pb 208 2009890.711 1.375 1.129 60.55341 1.28 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 89.286 Cr 52 Cr 53 Mn 55 Ni 60 Cu 63

Sample ID: CCV STD2 60PPB Report Date/Time: Wednesday, April 10,2002 11:05:12 Page 1

NYC-WTC_000040499

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