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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: AE06458 Sample Date/TIme: Monday, April 08, 2002 14:35:10 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\AE06458.317 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 11.667 48.739 0.000 0.00987 139.65 ug/L i> Se-I 45 493701.303 2.496 493701.303 ug/L 1 Cr 52 10785.836 0.985 0.007 0.38480 7.66 ug/L 1 Cr 53 1335.111 2.628 0.002 0.82336 6.76 ug/L 1 Mn 55 245614.922 0.646 0.496 16.57319 2.43 ug/L I Ni 60 819.378 2.472 0.002 0.33744 4.67 ug/L I Cu 63 5297.263 1.068 0.010 0.96505 1.62 ug/L L Cu 65 2501.370 4.299 0.005 0.93080 5.85 ug/L r Zn Zn 66 67 1628.162 472.017 4.722 8.098 0.012 0.004 0.72312 6.03 ug/L 1.24842 10.99 ug/L I Zn 68 1807.531 1.826 0.015 1.18172 3.05 ug/L |> Ge 72 98459.995 0.935 98459.995 ug/L I As 75 1195.273 1.030 0.010 0.47555 0.21 ug/L I Se 77 188.004 3.192 0.001 0.47171 5.45 ug/L L Se 82 254.339 4.740 0.001 0.29335 21.93 ug/L r Ag 107 115 133.002 1356539.800 2.605 1.034 -0.000 1356539.800 -0.03577 1.05 ug/L |> In ug/L Sb 121 519.020 3.343 0.000 0.03794 5.56 ug/L L Sb 123 429.367 10.203 0.000 0.04212 15.55 ug/L r Ba 135 42472.115 2.539 0.023 15.55728 2.17 ug/L r Ba 137 74311.917 1.063 0.040 15.54966 0.61 ug/L I Ho 165 1849286.654 1.147 0.000 ug/L |> Tb 159 1843708.115 0.468 1843708.115 ug/L I Tl 205 569.690 2.357 -0.000 -0.00201 22.48 ug/L L Pb 208 4322.779 1.843 0.001 0.07931 2.38 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff r Be 9 i> Se-I 45 93.782 I Cr 52 1 Cr 53 1 Mn 55 1 Ni 60 I Cu 63

Sample ID: AE06458 Report Date/TIme: Monday, April 08, 2002 14:36:44 Page 1

NYC-WTC_000078354

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