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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 STD1 30 PPB Sample Date/Time: Wednesday, April 10,2002 10:59:47 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200-8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\CCV STD1 30 PPB.441 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 14880.320 1.757 0.028 30.91013 1.17 ug/L > Se-1 45 522611.390 0.816 522611.390 ug/L Cr 52 293670.515 1.088 0.548 29.86560 0.29 ug/L Cr 53 34502.695 0.487 0.064 29.78740 1.26 ug/L Mn 55 462975.260 1.833 0.881 29.91989 2.41 ug/L Ni 60 70499.371 1.344 0.135 29.31865 1.45 ug/L Cu 63 160611.347 0.837 0.306 28.92367 0.33 ug/L Cu 65 79079.593 0.810 0.151 29.25065 0.08 ug/L Zn 66 51057.516 1.781 0.515 29.75522 1.05 ug/L Zn 67 9142.688 1.895 0.092 30.03917 2.85 ug/L Zn 68 37819.230 1.777 0.381 29.96050 2.40 ug/L > Ge 72 97578.224 0.981 97578.224 ug/L As 75 59476.689 0.989 0.606 30.26677 1.95 ug/L Se 77 5158.182 1.954 0.051 30.60287 2.66 ug/L Se 82 6889.345 1.387 0.069 30.29118 0.63 ug/L Ag 107 320184.553 0.652 0.238 29.44852 1.28 ug/L > In 115 1339942.330 0.964 1339942.330 ug/L Sb 121 274299.674 0.989 0.205 30.23097 0.22 ug/L Sb 123 212731.701 0.446 0.159 30.18624 0.52 ug/L Ba 135 80781.489 1.097 0.044 29.40429 2.15 ug/L Ba 137 141544.197 0.911 0.077 29.55961 2.01 ug/L Ho 165 1812287.001 0.314 0.127 ug/L > Tb 159 1836671.754 1.316 1836671.754 ug/L 71 205 763227.326 1.030 0.415 30.12948 1.75 ug/L Pb 208 1023842.653 1.252 0.556 29.83217 1.20 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 92.898 Cr 52 Cr 53 Mn 55 NI 60 Cu 63

Sample ID: CCV STD1 30PPB Report Date/Time: Wednesday, April 10, 2002 11:01:54 Page 1

NYC-WTC_000040497

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NYC-WTC_000040497Source: NYC Law Department, mirrored locally

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