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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 STD2 60 PPB Sample Date/TIme: Monday, April 08, 2002 14:48:43 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.321 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 28106.664 0.543 0.055 64.01022 3.42 ug/L 1> Sc-1 45 509658.596 3.460 509658.596 ug/L I Cr 52 573810.620 2.030 1.112 59.28327 1.55 ug/L I Cr 53 68088.384 0.714 0.133 59.40871 3.88 ug/L I Mn 55 911363.595 2.252 1.787 59.75108 2.17 ug/L Nt 60 140089.305 1.335 0.275 58.86770 2.24 ug/L I Cu 63 323517.104 1.722 0.635 59.62168 1.86 ug/L L Cu 65 157865.469 0.467 0.310 59.95726 3.78 ug/L r Zn 66 102181.533 1.889 1.041 60.27706 3.46 ug/L I Zn 67 18122.560 0.526 0.184 60.13577 1.83 ug/L I Zn 68 75611.240 0.910 0.770 60.05072 2.49 ug/L |> Ge 72 97805.041 1.668 97805.041 ug/L I As 75 118579.326 0.516 1.210 59.79084 1.74 ug/L I Se 77 10208.498 1.658 0.103 61.24898 2.58 ug/L L Se 82 13716.811 0.265 0.138 60.60974 1.70 ug/L r Ag 107 673799.247 0.532 0.497 61.18788 1.15 ug/L 1> In 115 1354761.993 1.039 1354761.993 ug/L Sb 121 551927.779 1.156 0.407 59.79505 0.69 ug/L L Sb 123 428961.059 0.832 0.317 60.37779 0.99 ug/L r Ba 135 166095.402 1.309 0.089 60.26952 1.13 ug/L I Ba 137 289608.210 2.825 0.155 60.02113 1.92 ug/L I Ho 165 1835996.604 1.436 -0.017 ug/L |> Tb 159 1863269.117 1.904 1863269.117 ug/L I Tl 205 1518890.731 1.683 0.815 60.24657 2.27 ug/L L Pb 208 2070786.292 0.708 1.111 60.82965 1.95 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff r Be 9 |> Sc-1 45 96.813 I Cr 52 I Cr 53 I Mn 55 I Ni 60 I Cu 63

Sample ID: CeV STD2 60PPB Report Date/TIme: Monday, April 08, 2002 14:50:48 Page 1

NYC-WTC_000078362

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