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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: AE06757 Sample Date/Time: Monday, April 08, 2002 14:55:20 Sample Type: Spike -1 Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\AE06757.323 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 23534.335 2.194 0.048 55.58520 2.22 ug/L |> Sc-1 45 491059.836 1.348 491059.836 ug/L Cr 52 461580.007 1.290 0.925 49.35654 2.21 ug/L I Cr 53 54855.599 2.075 0.111 49.56526 0.75 ug/L I Mn 55 990237.643 1.331 2.014 67.36417 0.30 ug/L Ni 60 111514.896 0.058 0.227 48.61338 1.40 ug/L I Cu 63 288868.544 1.511 0.588 55.23748 2.57 ug/L L Cu 65 141964.430 2.573 0.289 55.91358 2.77 ug/L r Zn 66 94901.449 1.407 0.950 55.02031 0.27 ug/L 1 Zn 67 16541.872 1.879 0.165 53.95161 2.39 ug/L I Zn 68 72264.987 3.097 0.723 56.41060 1.95 ug/L l> Ge 72 99439.936 1.168 99439.936 ug/L As 75 104427.318 0.995 1.048 51.76431 0.55 ug/L 1 Se 77 9301.517 2.015 0.092 54.80803 1.46 ug/L L Se 82 12446.641 1.777 0.123 54.00184 2.63 ug/L r Ag 107 512195.219 1.223 0.383 47.13204 2.18 ug/L i> In 115 1336735.687 0.964 1336735.687 ug/L I Sb 121 468415.575 1.514 0.350 51.43071 1.55 ug/L L Sb 123 364809.303 0.733 0.273 52.03696 0.56 ug/L r Ba 135 174824.756 0.528 0.095 64.57227 1.34 ug/L I Ba 137 303323.496 0.906 0.166 64.00058 2.03 ug/L 1 Ho 165 1828762.281 0.302 -0.004 ug/L i> Tb 159 1830534.046 1.145 1830534.046 ug/L 1 Tl 205 1215535.337 0.994 0.664 49.06755 1.74 ug/L L Pb 208 1658655.365 1.143 0.905 49.57474 0.64 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff r Be 9 111.145 |> Sc-1 45 93.280 i Cr 52 98.599 I Cr 53 98.045 I Mn 55 98.225 I Ni 60 96.562 Cu 63 98.925

Sample ID: AE06757 Report Date/Time: Monday, April 08, 2002 14:57:27 Page 1

NYC-WTC_000078366

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