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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: AE06852 Sample Date/TIme: Monday, April 08, 2002 15:19:05 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\AE06852.331 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 11.000 36.364 0.000 0.00815 114.99 ug/L |> Sc-1 45 495117.019 0.499 495117.019 ug/L Cr 52 8440.668 0.817 0.002 0.12843 7.64 ug/L I Cr 53 1394.454 2.074 0.002 0.87265 2.70 ug/L 1 Mn 55 247559.580 0.392 0.498 16.65069 0.48 ug/L I Ni 60 804.377 1.991 0.002 0.32972 2.51 ug/L I Cu 63 30721.466 1.113 0.062 5.78652 1.02 ug/L L Cu 65 15258.282 1.520 0.031 5.91467 1.51 ug/L r Zn 66 4034.936 2.160 0.037 2.14411 2.44 ug/L Zn 67 821.712 2.947 0.007 2.41267 3.13 ug/L I Zn 68 3606.085 1.484 0.034 2.61287 1.83 ug/L l> Ge 72 98225.112 0.341 98225.112 ug/L I As 75 1063.862 5.625 0.008 0.41096 7.73 ug/L I Se 77 205.338 10.243 0.001 0.57902 21.35 ug/L L Se 82 235.339 8.608 0.000 0.21103 43.74 ug/L r Ag 107 219.672 4.491 -0.000 -0.02786 1.93 ug/L |> In 115 1353124.577 1.941 1353124.577 ug/L Sb 121 529.021 2.180 0.000 0.03916 1.37 ug/L L Sb 123 397.365 1.473 0.000 0.03775 3.52 ug/L r Ba 135 41891.719 0.596 0.023 15.56050 1.53 ug/L 1 Ba 137 72511.485 1.764 0.040 15.38357 1.08 ug/L I Ho 165 1806882.206 0.693 -0.009 ug/L |> Tb 159 1818497.910 1.564 1818497.910 ug/L I Tl 205 474.684 5.289 -0.000 -0.00555 19.29 ug/L L Pb 208 5856.134 1.931 0.002 0.12727 1.04 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 94.051 I Cr 52 1 Cr 53 I Mn 55 I Ni 60 I Cu 63

Sample ID: AE06852 Report Date/Time: Monday, April 08, 2002 15:20:39 Page 1

NYC-WTC_000078382

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