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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: LRB Sample Date/Time: Monday, April 08, 2002 14:01:01 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\LRB.306 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 15.667 19.500 0.000 0.01734 39.64 ug/L 1> Sc-1 45 519903.317 0.290 519903.317 ug/L I Cr 52 7468.141 1.623 -0.000 -0.01467 98.49 ug/L I Cr 53 460.016 1.522 0.000 0.00886 56.04 ug/L 1 Mn 55 1011.066 0.495 -0.000 -0.00472 7.03 ug/L I Ni 60 48.334 29.935 0.000 0.00174 343.23 ug/L I Cu 63 275.674 8.025 0.000 0.00652 63.41 ug/L L Cu 65 158.003 1.675 0.000 0.00833 11.83 ug/L r Zn 66 428.681 5.605 0.000 0.01375 83.30 ug/L I Zn 67 100.335 9.983 0.000 0.01109 280.45 ug/L Zn 68 362.011 4.793 0.000 0.03212 34.15 ug/L l> Ge 72 100036.083 0.995 100036.083 ug/L I As 75 300.734 19.748 0.000 0.02448 125.88 ug/L I Se 77 121.669 6.893 0.000 0.06058 73.21 ug/L L Se 82 210.338 6.020 0.000 0.08264 71.86 ug/L r Ag 107 1529.811 3.450 0.001 0.08608 5.02 ug/L |> In 115 1406403.434 1.386 1406403.434 ug/L I Sb 121 445.016 18.316 0.000 0.02816 28.63 ug/L L Sb 123 336.695 15.697 0.000 0.02733 24.47 ug/L r Ba 135 65.334 12.372 0.000 0.00236 118.82 ug/L I Ba 137 111.668 6.601 0.000 0.00220 56.89 ug/L I Ho 165 1904594.265 0.780 -0.013 ug/L |> Tb 159 1924182.266 1.208 1924182.266 ug/L I Tl 205 743.705 15.062 0.000 0.00370 / 110.10 ug/L L Pb 208 1889.095 6.233 0.000 0.0046^ 59.70 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff r Be 9 t> Sc-1 45 98.759 Cr 52 I Cr 53 Mn 55 1 Ni 60 I Cu 63

Sample ID: LRB Report Date/Time: Monday, April 08, 2002 14:03:19 Page 1

NYC-WTC_000078332

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