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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 13:13:48 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 STD2 60 PPB.473 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 26369.122 1.235 0.059 63.55675 1.95 ug/L > Se-1 45 450667.826 2.093 450667.826 ug/L Cr 52 514484.945 1.935 1.128 61.44815 0.16 ug/L Cr 53 60915.389 1.774 0.134 61.74966 2.37 ug/L Mn 55 814683.341 0.169 1.803 61.24998 2.10 ug/L Ni 60 124438.168 0.983 0.276 60.03090 1.12 ug/L Cu 63 283121.032 1.350 0.627 59.25678 0.84 ug/L Cu 65 138130.975 1.251 0.306 59.31234 3.28 ug/L Zn 66 90749.998 1.364 1.033 59.68547 1.29 ug/L Zn 67 15942.461 1.167 0.181 59.15431 0.33 ug/L Zn 68 66670.583 0.560 0.759 59.60258 0.90 ug/L Ge 72 87163.458 1.439 87163.458 ug/L As 75 105949.425 1.947 1.212 60.50893 1.14 ug/L Se 77 8948.492 1.246 0.101 60.20078 0.26 ug/L Se 82 11985.350 1.581 0.135 59.84458 0.65 ug/L Ag 107 584683.238 1.095 0.482 59.53313 1.62 ug/L In 115 1211849.694 0.711 1211849.694 ug/L Sb 121 501005.560 2.475 0.413 61.05270 1.77 ug/L Sb 123 387174.481 1.366 0.319 60.74715 0.74 ug/L Ba 135 145921.365 1.277 0.088 58.71382 0.74 ug/L Ba 137 252470.656 1.338 0.152 58.27908 0.55 ug/L Ho 165 1646478.052 0.726 0.131 ug/L Tb 159 1661786.762 0.817 1661786.762 ug/L TI 205 1354082.092 1.190 0.814 59.10933 1.84 ug/L Pb 208 1847613.734 1.143 1.111 59.55967 1.90 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 80.109 Cr 52 Cr 53 Mn 55 Ni 60 Cu 63

Sample ID: CCV STD2 60PPB Report Date/Time: Wednesday, April 10, 2002 13:15:54 Page 1

NYC-WTC_000040561

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