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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 Repoil Sample ID: AE06757 Sample Date/Time: Monday, April 08, 2002 14:58:28 Sample Type: Spike -1 Sample Description: MSD Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\AE06757.324 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 23065.123 1.222 0.047 55.00956 0.93 ug/L |> Sc-1 45 486284.724 1.176 486284.724 ug/L I Cr 52 453338.238 2.216 0.918 48.93661 1.89 ug/L I Cr 53 54400.501 0.965 0.111 49.64817 2.06 ug/L 1 Mn 55 990125.852 0.631 2.034 68.02592 1.53 ug/L Ni 60 112048.741 0.265 0.230 49.32492 1.34 ug/L I Cu 63 286979.811 0.401 0.590 55.40811 0.96 ug/L L Cu 65 141252.698 0.794 0.290 56.18035 1.57 ug/L r Zn 66 95102.830 0.819 0.974 56.38177 0.40 ug/L 1 Zn 67 16447.031 1.390 0.168 54.85269 2.33 ug/L I Zn 68 69523.869 0.722 0.712 55.49716 1.38 ug/L |> Ge 72 97257.815 0.974 97257.815 ug/L I As 75 102104.600 0.626 1.047 51.75169 1.41 ug/L I Se 77 9155.368 2.386 0.093 55.15784 1.50 ug/L L Se 82 12090.823 1.174 0.122 53.61983 0.38 ug/L r Ag 107 517332.775 1.392 0.387 47.66061 3.11 ug/L i> In 115 1335483.877 1.781 1335483.877 ug/L 1 Sb 121 467378.410 0.906 0.350 51.37137 1.57 ug/L L Sb 123 359275.681 1.816 0.269 51.29870 1.67 ug/L r Ba 135 173507.890 0.676 0.095 64.35332 0.91 ug/L Ba 137 300360.093 1.325 0.165 63.63176 0.32 ug/L I Ho 165 1808448.303 0.328 -0.011 ug/L i> Tb 159 1822838.387 1.019 1822838.387 ug/L 1 T1 205 1220878.020 1.573 0.669 49.48532 1.03 ug/L L Pb 208 1649025.114 0.283 0.904 49.49816 1.20 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff r Be 9 109.994 |> Sc-1 45 92.373 I Cr 52 97.759 I Cr 53 98.211 1 Mn 55 99.549 I Ni 60 97.985 I Cu 63 99.267

Sample ID: AE06757 Report Date/Time: Monday, April 08, 2002 15:01:09 Page 1

NYC-WTC_000078368

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