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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: ICV STD2 60 PPB Sample Date/Time: Monday, April 08, 2002 13:49:17 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\ICV STD2 60 PPB.303 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 28236.747 2.203 0.053 61.72683 1.51 ug/L i> Se-I 45 530526.096 1.317 530526.096 ug/L 1 Cr 52 591687.222 1.474 1.101 58.69748 0.38 ug/L I Cr 53 69884.293 0.943 0.131 58.52240 0.47 ug/L I Mn 55 941204.424 0.570 1.772 59.26495 1.66 ug/L 1 Ni 60 146391.449 0.954 0.276 59.07026 1.07 ug/L 1 Cu 63 332022.415 1.044 0.625 58.76475 1.78 ug/L L Cu 65 162992.542 0.924 0.307 59.41976 0.51 ug/L r Zn 66 105711.465 0.564 1.034 59.86726 0.55 ug/L Zn 67 18405.799 1.016 0.180 58.64563 2.11 ug/L I Zn 68 77524.257 0.458 0.758 59.11672 1.43 ug/L |> Ge 72 101839.974 1.109 101839.974 ug/L As 75 124283.655 0.683 1.218 60.17977 1.46 ug/L I Se 77 10765.145 0.989 0.105 62.02531 0.32 ug/L L Se 82 14115.091 0.168 0.137 59.88217 1.08 ug/L r Ag 107 695496.341 0.855 0.491 60.40375 2.60 ug/L i> In 115 1416854.839 1.766 1416854.839 ug/L I Sb 121 577771.851 1.318 0.408 59.85668 1.12 ug/L L Sb 123 446066.217 1.380 0.315 60.03561 1.03 ug/L r Ba 135 175955.613 0.584 0.090 60.96413 0.38 ug/L I Ba 137 302883.003 1.167 0.155 59.94401 0.75 ug/L I Ho 165 1941247.053 1.193 -0.008 ug/L i> Tb 159 1951209.492 0.655 1951209.492 ug/L I Tl 205 1577071.894 0.661 0.808 59.72321 0.17 ug/L L Pb 208 2147072.153 1.363 1.100 60.214M 1.44 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff r Be 9 |> Sc-1 45 100.777 I Cr 52 I Cr 53 I Mn 55 I Ni 60 I Cu 63

Sample ID: ICV STD2 60 PPB Report Date/Time: Monday, April 08, 2002 13:51:32 Page 1

NYC-WTC_000078326

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