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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: Standard 1 Sample Date/Time: Monday, April 08, 2002 13:32:20 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\Standard 1.299 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 13925.799 1.722 0.026 29.82516 1.18 ug/L |> Sc-1 45 536302.858 0.880 536302.858 ug/L I Cr 52 303743.424 0.742 0.552 29.90641 1.05 ug/L I Cr 53 35633.060 1.177 0.066 30.02148 0.45 ug/L I Mn 55 475843.460 1.293 0.885 29.86041 1.08 ug/L Ni 60 73785.314 1.032 0.137 29.49271 0.16 ug/L I Cu 63 168195.708 0.553 0.313 29.42721 1.40 ug/L L Cu 65 82812.978 0.542 0.154 29.32124 0.34 ug/L r Zn 66 54630.885 1.214 0.524 30.25153 1.66 ug/L I Zn 67 9677.912 0.804 0.093 30.23058 0.86 ug/L I Zn 68 40599.883 1.843 0.389 30.54096 0.89 ug/L |> Ge 72 103517.771 0.954 103517.771 ug/L I As 75 62292.687 0.797 0.599 29.47935 0.19 ug/L 1 Se 77 5330.950 2.315 0.050 29.67362 1.58 ug/L L Se 82 7062.480 2.118 0.066 29.01481 1.30 ug/L r Ag 107 344582.247 1.394 0.238 29.40950 0.58 ug/L l> In 115 1446372.352 1.939 1446372.352 ug/L I Sb 121 294023.504 0.821 0.203 29.82521 1.18 ug/L L Sb 123 227052.195 1.001 0.157 29.69383 1.41 ug/L r Ba 135 89193.767 2.112 0.045 26.87081 1.38 ug/L I Ba 137 153711.802 0.171 0.077 26.62231 1.01 ug/L Ho 165 1974515.879 1.643 -0.008 ug/L i> Tb 159 1985254.516 1.021 1985254.516 mg/L 1 Tl 205 815261.444 1.804 0.410 26.98244 1.87 ug/L L Pb 208 1099808.931 1.149 0.553 26.85561 0.76 ug/L

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

Sample ID: Standard 1 Report Date/Time: Monday, April 08, 2002 13:33:55 Page 1

NYC-WTC_000078318

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