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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: AE06853 Sample Date/Time: Monday, April 08, 2002 15:28:13 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\AE06853.334 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 10.667 19.516 0.000 0.00729 70.44 ug/L |> Sc-1 45 497309.423 1.539 497309.423 ug/L I Cr 52 8360.263 3.703 0.002 0.11559 17.23 ug/L I Cr 53 1371.784 2.357 0.002 0.84663 1.19 ug/L I Mn 55 277280.595 2.281 0.556 18.57798 2.69 ug/L I Ni 60 839.381 3.158 0.002 0.34318 1.81 ug/L I Cu 63 31130.859 0.983 0.062 5.83868 1.16 ug/L L Cu 65 15046.595 1.749 0.030 5.80767 3.10 ug/L r Zn 66 4831.332 1.519 0.045 2.61982 0.72 ug/L I Zn 67 962.727 2.769 0.009 2.88871 3.75 ug/L Zn 68 4067.951 0.279 0.038 2.98690 0.96 ug/L I > Ge 72 98004.436 0.868 98004.436 ug/L I As 75 1137.671 3.400 0.009 0.44924 3.45 ug/L I Se 77 193.671 7.524 O.001 0.51198 19.11 ug/L L Se 82 251.673 4.790 0.001 0.28623 17.89 ug/L r Ag 107 166.670 3.516 -0.000 -0.03239 2.30 ug/L i> In 115 1328877.428 1.464 1328877.428 ug/L I Sb 121 483.684 2.807 0.000 0.03519 2.25 ug/L L Sb 123 362.824 9.578 0.000 0.03380 14.66 ug/L r Ba 135 41179.148 1.640 0.023 15.23687 0.68 ug/L I Ba 137 71677.526 0.946 0.039 15.15127 0.95 ug/L Ho 165 1826493.616 1.322 -0.002 ug/L |> Tb 159 1825133.850 0.961 1825133.850 ug/L 1 Tl 205 463.683 8.298 -0.000 -0.00608 22.66 ug/L L Pb 208 6128.876 2.928 0.002 0.13480 3.19 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff r Be 9 1> Sc-1 45 94.468 I Cr 52 I Cr 53 I Mn 55 I Ni 60 1 Cu 63

Sample ID: AE06853 Report Date/Time: Monday, April 08, 2002 15:30:19 Page 1

NYC-WTC_000078388

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