Selenium lab results, WTC samples, Nov 8 2001

NYC 9/11 Public Portal Document s3ssac3aassaBBB88SS3B&saes8SSBSs:aB8BSE3ssssssx3BSSB&s88a;ssBS83&s&sssBBe5S8sst=s88SBssssesBSBe3SSBe:aBssssessscassss

Method Name: SeHGAP Element: Se . Method Description: Sehga SM3113 B

Date: 11/08/2001 Technique: Furnace Calibration Equation: Calc. Intercept: Linear Wavelength: 196.0 nm Slit Width: 2.00 nm Lait^) Current; 0 Energy: 61 San^Jle Info File; Untitled Results Data Set:

Element: Se Seq. No.; 61 AS Loc.: 26 Date; 11/08/2001 Sample ID: 26112 nil dispensed: 10 from 36, 5 from 37, 20 from 26 gL dispensed: 10 from 36, 5 from 37, 20 from 26

Repl San^jleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # gg/h gg/i* Signal Area Height Area Height Stored 1 0.2550 0.2550 0.003 0.006 0.009 0.206 0.093 14:23:32 No

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Element: Se Seq. No.: 62 AS hoc.: 26 Date: 11/08/2001 San^le ID: 26112 gL dispensed: 5 from 37, 20 from 26, 10 from 38 lih dispensed: 5 from 37, 20 from 26, 10 from 38

Repl San^leConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # gg/L gg/L Signal Area Height Area Height Stored 1 2.757 2.757 0.021 0.023 0.020 0.223 0.095 14:27:45 No Recovery is 50.0% (outside of specified limits)

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Element: Se Seq. No.; 63 AS hoc.: 26 Date: 11/08/2001 San^le ID: 26112 gL dispensed: 25 from 36, 5 from 37, 5 from 26 /iL dispensed: 25 from 36, 5 from 37, 5 from 26

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # gg/h Mg/i- Signal Area Height Area Height Stored 1 -0.9372 -0.2343 0.000 0.002 0.011 0.084 0.048 14:32:06 No

Element: Se Seq. No.: 64 AS Loc.: 26 Date: 11/08/2001 San^le ID: 26112 fill dispensed; 15 from 36, 5 from 37, 5 from 26, 10 from 38 gL dispensed: 15 from 36, 5 from 37, 5 from 26, 10 from 38

Repl San^leConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # gg/L gg/L Signal Area Height Area Height Stored 1 16.66 4.166 0.031 0.033 0.036 0.082 0.052 14:36:39 No Recovery is 83.3% (outside of specified limits)

Element: Se Seq. No.: 65 AS Loc.: 27 Date; 11/08/2001 Sample ID: 26112dup fill dispensed: 10 from 361, 5 from 37, 20 from 27 gL dispensed: 10 from 36, 5 from 37, 20 from 27

Repl San^leConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # /ig/h Mg/L Signal Area Height Area Height Stored 1 -0.2902 -0.2902 -0.001 0.002 0.010 0.222 0.105 14:41:04 No

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NYC-WTC_000065717