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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

Method Name: PbHgaLow Element! Pb Method Description: Pbhga SM3113 B

Date: 10/05/2001 Technique: Furnace Calibration Equation: Calc. Intercept: Linear Wavelength: 283.3 nm Slit Width: 0.70 nm Lamp Current: 10 Energy: 58 Sample Info File; Untitled Results Data Set:

Element: Pb Seq. No.: 338 AS Loc.: 36 Date: 10/05/2001 Sample ID: Calib Blank pL dispensed; 12 from 36, 5 from 37, 24 from 36 pL dispensed: 12 from 36, 5 from 37, 24 from 36

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L signal Area Height Area Height Stored \ -0.006 -0.003 0.004 0.001 0.004 16:42:54 No \Auto-zera performed. ===iTK5SS«e;==: Element: Pb Seq. No.: 339 AS Loc.: 38 Date: 10/05/2001 Sample ID: SI pL dispensed: 33 from 36, 5 from 37, 3 from 38 pL dispensed: 33 from 36, 5 from 37, 3 from 38

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 0.025 0.022 0.051 0.009 0.017 16:47:09 No Standard number 1 applied. [1] Correlation Coefficient: 1.0000 Slope: 0.0246

Element: Pb Seq. No.: 340 AS Loc.: 38 Date: 10/05/2001 Sample ID: S2 pL dispensed: 30 from 36, 5 from 37, 6 from 38 pL dispensed: 30 from 36, 5 from 37, 6 from 38

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L signal Area Height Area Height Stored 1 0.045 0.042 0.091 0.016 0.029 16:51:29 No Standard number 2 applied. [2] Correlation Coefficient: 0.9982 Slope: 0.0223

Element: Pb Seq. No.: 341 AS Loc.: 38 Date: 10/05/2001 Sample ID: S4 pL dispensed: 24 from 36, 5 from 37, 12 from 38 pL dispensed: 24 from 36, 5 from 37, 12 from 38

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 0.083 0.080 0.169 0.028 0.056 16:55:49 No Standard number 3 applied. [4] Correlation Coefficient: 0.9984 Slope: 0.0205

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NYC-WTC_000064503Source: NYC Law Department, mirrored locally

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