Selenium lab results, WTC samples, Nov 8 2001

NYC 9/11 Public Portal Document S3=sa8BSSSSSBSS3B88S2SS&SS3SSS8S&SE3SS38888S&SSaiSSS3CSSSZS8588SSSSSC5SSBtSaSSSBSSSSS8:

Element; Se Seq. No.; 23 AS Loc.: 6 Date: 11/08/2001 . Sample ID: 25842 /xL dispensed: 10 from 36, 5 from 37, 20 from 6 gL dispensed: 10 from 36, 5 from 37, 20 from 6

Repl San^leConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # Mg/L pg/L Signal Area Height Area Height Stored 1 0.6786 0.6786 0.006 0.009 0.012 0.035 0.020 11:32:35 No

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Element: Se Seq. No.; 24 AS Loc.: 6 Date; 11/08/2001 Sanqple ID; 25842 Illi dispensed: 5 froiti 37, zJ from 6, 10 from 38 gL dispensed: 5 from 37, 20 from 6, 10 from 38

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # Signal Area Height Area Height Stored 1 5.222 / 5.222 0.038 0.041 0.059 0.041 0.028 11:36:48 No Recovexy is 90.9%

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Element; Se Seq. No.: 25 AS Loc.: 7 Date; 11/08/2001 Sairple ID: 25842dup /iL dispensed; 10 from 36, 5 from 37, 20 from 7 fill dispensed; 10 from 36, 5 from 37, 20 from 7

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # /tg/L Signal Area Height Area Height Stored 1 -0.0528 -0.0528 0.001 0.003 0.010 0.035 0.018 11:41:07 No

Element: Se Seq. No^'06 AS Loc.: 7 Date: 11/08/2001 Sample ID: 25842dup /xL dispensed: 5 from 37, 20 from 7, 10 from 38 gL dispensed: 5 from 37, 20 from 7, 10 from 38

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # Mg/L pg/L Signal Area Height Area Height Stored 1 4.832 0.036 0.038 0.059 0.041 0.028 11:45:22 No Recovery is 96.6%

Element: Se Seq. No.: 27 AS Loc.: 8 Date: 11/08/2001 Sanple ID: 25843 /xL dispensed: 10 from 36, 5 from 37, 20 from 8 Illa dispensed: 10 from 36, 5 from 37, 20 from 8

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # Mg/L Mg/L Signal Area Height Area Height Stored 1 -0.0587 -0.0587 0.001 0.003 0.009 0.037 0.018 11:49:44 No

Element: Se Seq. No.: 28 AS Loc.: 9 Date; 11/08/2001 Sample XD: 25844 Illi dispensed: 10 from 36, 5 from 37, 20 from 9 lih dispensed: 10 from 36, 5 from 37, 20 from 9

Repl San^jleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # Mg/L Mg/L Signal Area Height Area Height Stored 1 -0.1640 -0.1640 0.000 0.003 0.008 0.032 0.016 11:54:07 No

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NYC-WTC_000065712