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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 15:21:55 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\AE06853.332 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 8.667 35.251 0.000 0.00233 300.35 ug/L |> Sc-1 45 503265.180 1.385 503265.180 ug/L Cr 52 18880.374 97.483 0.023 1.20428 158.78 ug/L I Cr 53 1386.453 1.791 0.002 0.84528 2.93 ug/L I Mn 55 280836.069 0.768 0.556 18.59438 2.06 ug/L I Ni 60 821.712 1.774 0.002 0.33143 0.55 ug/L Cu 63 31392.427 1.205 0.062 5.81856 2.37 ug/L L Cu 65 15305.027 1.224 0.030 5.83735 2.52 ug/L r Zn 66 4809.987 2.168 0.045 2.62635 2.65 ug/L 1 Zn 67 951.059 3.265 0.009 2.87221 5.76 ug/L I Zn 68 4087.627 1.816 0.039 3.02454 3.03 ug/L |> Ge 72 97368.419 1.934 97368.419 ug/L I As 75 1086.620 4.312 0.009 0.42759 8.07 ug/L Se 77 215.338 6.061 0.001 0.65036 8.39 ug/L L Se 82 249.339 2.019 0.001 0.28323 6.38 ug/L r Ag 107 235.672 2.450 -0.000 -0.02595 2.61 ug/L |> In 115 1325488.609 0.784 1325488.609 ug/L 1 Sb 121 498.685 4.486 0.000 0.03700 6.86 ug/L L Sb 123 411.202 1.672 0.000 0.04090 3.11 ug/L r Ba 135 40949.106 1.429 0.022 15.13387 2.31 ug/L Ba 137 71064.082 1.350 0.039 15.00023 0.42 ug/L Ho 165 1826360.428 0.510 -0.003 ug/L 1> Tb 159 1827606.793 0.925 1827606.793 ug/L I Tl 205 441.349 7.598 -0.000 -0.00700 19.43 ug/L L Pb 208 6194.895 1.181 0.002 0.13657 2.68 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 95.599 Cr 52 1 Cr 53 I Mn 55 1 Ni 60 I Cu 63

Sample ID: AE06853 Report Date/Time: Monday, April 08, 2002 15:23:30 Page 1

NYC-WTC_000078384

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