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Water metal analysis results, April 8, 2002

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Laboratory report from Westchester County Dept of Labs and Research detailing Method 200.8 metal concentrations in water samples dated April 8, 2002.

NYC-WTC_000078316–000078395

Folder label: “ICPMS 4/8/02

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: CeV STD1 30PPB Sample DatefTime: Monday, April 08, 2002 14:45:27 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.320 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 r Be 9 14254.977 0.725 0.028 32.33558 2.38 ug/L i> Sc-1 45 511287.664 1.668 511287.664 ug/L I Cr 52 287160.128 0.678 0.547 29.17617 1.43 ug/L 1 Cr 53 34251.749 0.953 0.066 29.57639 1.85 ug/L I Mn 55 450141.593 1.165 0.879 29.38054 2.80 ug/L I Ni 60 68929.710 1.134 0.135 28.85711 2.60 ug/L I Cu 63 160491.200 0.376 0.314 29.45543 2.01 ug/L L Cu 65 79283.683 0.407 0.155 29.97019 1.71 ug/L r Zn 66 52533.216 1.041 0.530 30.69099 0.28 ug/L 1 Zn 67 9025.903 1.856 0.091 29.61770 1.29 ug/L 1 Zn 68 38305.921 0.879 0.386 30.12419 1.68 ug/L i> Ge 72 98351.151 0.802 98351.151 ug/L I As 75 59930.862 1.014 0.607 29.98339 0.44 ug/L Se 77 5136.836 0.743 0.051 30.31255 0.51 ug/L L Se 82 7014.776 0.879 0.069 30.40745 1.35 ug/L r Ag 107 326217.743 1.680 0.238 29.25259 0.53 ug/L I; In 115 1370672.094 1.448 1370672.094 ug/L 1 Sb 121 274472.566 6.415 0.200 29.38423 1.03 ug/L L Sb 123 212233.666 0.817 0.155 29.51730 0.85 ug/L r Ba 135 81407.024 0.768 0.044 29.72860 0.67 ug/L I Ba 137 142372.740 1.384 0.077 29.69811 0.32 ug/L 1 Ho 165 1847737.100 0.818 -0.004 ug/L |> Tb 159 1850629.610 1.067 1850629.610 ug/L 1 Tl 205 779794.489 1.243 0.421 31.12555 1.51 ug/L L Pb 208 1048401.319 0.721 0.566 30.97686 0.41 ug/L

QC Calculated Values /Vialyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff r Be 9 i> sc-1 45 97.123 i Cr 52 f Cr 53 I Mn 55 I Ni 60 I Cu 63

Sample ID: cev STD1 30PPB Report Date/Time: Monday, April 08, 2002 14:47:33 Page 1

NYC-WTC_000078360

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