Antimony lab results, WTC samples, Nov 9 2001

NYC 9/11 Public Portal Document ZSB:S8^SSSBSB|SS83=8SSS=ZSSSSSBSCS8BSS3BSSSS&B5S8BZSSSSSSZSBSS88S=SS;B8SBS5SSBSBSSSSSB85SSSBSBa:SBSSBSSS:S88S

Element: Sb Seq. No.: 40 AS Loc.: 16 Date: 11/09/2001 San^Jle ID: 25940 lilt dispensed: 15 from 36, 5 from 37, 10 from 38, 5 from 16

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # FS/h Mg/i* Signal Area Height Area Height Stored 1 47.20 11.80 0.040 0.062 0.050 -0.005 0.012 11:25:19 No Recovery is 104,8%

Element: Sb Seq. No.: 41 AS Loc.: 17 Date: 11/09/2001 San^le ID: 25944 fill dispensed: 10 from 36, 5 from 37, 20 from 17

Repl San^jleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak « gg/L iig/L Signal Area Height Area Height Stored 1 0.5069 0.5069 0.002 0.024 0.025 0.000 0.015 11:28:01 No

Element: Sb Seq. No.: 42 AS Loc.: 18 Date: 11/09/2001 Sample ID: 25945 liTii dispensed: 10 from 36, 5 from 37, 20 from 18

Repl Sati^JleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # gg/L gg/L Signal Area Height Area Height Stored 1 -0.6841 -0.6841 -0.002 0.020 0.019 0.000 0.013 11:30:43 No

Element: Sb Seq. No.; 43 AS Loc.: 19 Date: 11/09/2001 San^le ID: 25946 fill dispensed: 10 from 36, 5 from 37, 20 from 19

Repl San^jleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # Signal Area Height Area Height Stored 1 0.4642 0.4642 0.002 0.024 0.022 0.001 0.014 11:33:23 No

Element: Sb Seq. No.: 44 AS Loc.: 2 Date: 11/09/2001 San^jle ID: IPC gL dispensed: 10 from 36, 5 from 37, 20 from 2

Repl San^leConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # lig/Jj iig/la Signal Area Height Area Height Stored 1 11.46 11.46 0.039 0.061 0.055 -0.003 0.013 11:36:01 No QC out of limits, QC will be repeated based on Retry setting.

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Element: Sb Seq. No.: 45 AS hoc.: 2 Date: 11/09/2001 Satt^jle ID: IPC fili dispensed: 10 from 36, 5 from 37, 20 from 2

Repl SattiileConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # Hg/h gg/L Signal JUrea Height Area Height Stored 1 9.805 9.805 0.033 0.056 0.051 0.002 0.017 11:38:39 No QC value within specified limits.

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