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Lead (Pb) laboratory analysis results with QC notes, Oct 2001

Machine-extracted title · confidence 95%

Laboratory report listing sample IDs for lead analysis conducted on October 1, 2001, including remarks on quality control rejection.

NYC-WTC_000064501–000064514

Folder label: “Pb

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NYC 9/11 Public Portal Document

Element: Pb Seq. No.: 355 AS Loc.: 6 Date: 10/05/2001 Sample ID: 23909 pL dispensed: 12 from 36, 5 from 37, 24 from 6 pL dispensed: 12 from 36, 5 from 37, 24 from 6

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L \ pg/L Signal Area , Height Area Height Stored 1 -0.1929 -0.1929 0.000 0.010 0.021 0.011 0.009 18:14:35 No

Element: Pb Seq. No.: 356 AS Loc.: 6 Date: 10/05/2001 Sample ID: 23909 pL dispensed: 5 from 37, 12 from 38, 24 from 6 pL dispensed: 5 from 37, 12 from 38, 24 from 6

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 2.197 0.046 0.057 0.094 0.022 0.033 18:18:46 No Recovery i outside of specified limits)

Element: Pb Seq. No.: 357 AS Loc.: 6 Date: 10/05/2001 Sample ID: 23909 pL dispensed: 30 from 36, 5 fro^ 37, 6 from 6 pL dispensed: 30 from 36, 5 frorl\ 37, 6 from 6

Repl SampleConc StndConc Blnk< ^rr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Sign, Area Height Area Height Stored 1 -0.8891 -0.2223 -0.00 0.010 0.020 0.002 0.006 18:22:59 No

Element: Pb Seq. No.: 358 AS L^. : 6 Date: 10/05/2001 Sample ID: 23909 pL dispensed: 18 from 36, 5 from 37, 12 fA^ 38, 6 from 6 pL dispensed: 18 from 36, 5 from 37, 12 frohi 38, 6 from 6

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 13.12 3.281 0.067 0.078 0.139 0.027 0.044 18:27:28 No Recovery is 82.0%

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NYC-WTC_000064509

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NYC-WTC_000064509Source: NYC Law Department, mirrored locally

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