Elemental analysis lab report, January 3, 2002

NYC 9/11 Public Portal Document

Element: Sn Seq. No.: 108 AS Loc.: 4 Date: 01/03/2002 S,ample ID: LFB pL dispensed: 8 from 36, 5 from 37, 12 from 4

Repl Samp-^€on StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pgy Lf pg/L Signal Area Height Area Height Stored 1 178.6 178.6 0.060 0.062 0.157 0.030 0.024 15:25:12 No QC value ri thin ecified limits.

Element: Sn Seq. No.: 109 AS Loc.: 5 Date: 01/03/2002 Sample ID: LRB pL dispensed: 8 from 36, 5 from 37, 12 from 5

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L Signal Area Height Area Height Stored 1 <-4.374 j -4.374 -0.001 0.001 0.004 0.015 0.016 15:27:49 No

Element: Sn Seq. No.: 110 AS Loc.: 6 Date: 01/03/2002 Sample ID: 30108 pL dispensed: 8 from 36, 5 from 37, 12 from 6

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 -4.895 -4.895 -0.001 0.001 0.004 0.021 0.018 15:30:27 No

Element: Sn Seq. No.: 111 AS Loc.: 6 Date: 01/03/2002 Sample ID: 30108 pL dispensed: 5 from 36, 5 from 37, 3 from 38, 12 from 6

Repl Sampl^Sqnc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/hTA \ pg/L Signal Area Height Area Height Stored 1 V 41.39 \ 41.39 0.^4 0.017 0.043 0.026 0.019 15:33:13 No Recovery^ 82.8% j (outside ot spefcifi‘ld limits)

Element: Sn Seq. No.: 112 AS Loc.: 6 Date: 01/03/2002 Sample ID: 30108 pL dispensed: 16 from 36, 5 from 37, 4 from 6

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 -33.14 -11.05 -0.003 -0.001 0.004 0.018 0.018 15:35:51 No

Element: Sn Seq. No.: 113 AS Loc.: 6 Date: 01/03/2002 Sample ID: 30108 pL dispensed: 13 from 36, 5 from 37, 3 from 38, 4 from 6

Repl S, ei c StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/ pg/L Signal Area Height Area Height Stored 1 50.5 50.18 0.017 0.019 0.043 0.019 0.017 15:38:37 No Recovery i . 100.4

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NYC-WTC_000083970