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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 2 Sample Date/Time: Monday, April 08, 2002 13:35:54 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 2.300 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 27136.737 2.983 0.052 59.94726 2.24 ug/L |> Sc-1 45 525073.935 2.773 525073.935 ug/L Cr 52 601125.350 2.021 1.130 60.28741 1.68 ug/L 1 Cr 53 71298.340 2.676 0.135 60.33740 0.10 ug/L I Mn 55 946233.362 2.556 1.800 60.19947 1.42 ug/L 1 Ni 60 147808.453 0.967 0.282 60.27949 2.01 ug/L I Cu 63 337008.287 0.366 0.642 60.28732 2.46 ug/L L Cu 65 163060.331 1.883 0.310 60.08048 2.45 ug/L r Zn 66 105121.689 0.762 1.034 59.83838 0.45 ug/L Zn 67 18706.414 0.585 0.184 59.90984 0.60 ug/L I Zn 68 78066.245 1.441 0.767 59.83403 1.19 ug/L |> Ge 72 101315.448 0.317 101315.448 ug/L I As 75 123692.032 1.786 1.218 60.19575 1.48 ug/L f Se 77 10374.689 2.055 0.101 60.06185 1.81 ug/L L Se 82 14181.532 2.256 0.138 60.47686 2.01 ug/L r Ag 107 697501.213 0.710 0.490 60.35763 1.22 ug/L I> In 115 1421767.057 1.649 1421767.057 ug/L 1 Sb 121 581948.083 0.927 0.409 60.08421 1.54 ug/L L Sb 123 447525.510 1.071 0.315 60.03584 2.58 ug/L r Ba 135 173539.150 0.704 0.088 59.81934 1.23 ug/L I Ba 137 304982.264 1.648 0.155 60.05405 2.14 ug/L 1 Ho 165 1940072.598 1.279 -0.013 ug/L |> Tb 159 1961310.235 0.669 1961310.235 ug/L I Tl 205 1588110.232 0.382 0.809 59.83334 0.79 ug/L L Pb 208 2145256.219 0.931 1.093 59.85470 1.23 ug/L

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

Sample ID: Standard 2 Report Date/Time: Monday, April 08, 2002 13:37:29 Page 1

NYC-WTC_000078320

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