Sample batch list with IDs, April 26, 2002

NYC 9/11 Public Portal Document

Element: Sn Seq. No.: 60 AS Loc.: 10 Date: 04/26/2002 Sample ID: 9521 uL dispensed: 8 from 36, 5 from 37, 12 from 10

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L ug/L Signal Area Height Area Height Stored 1 -4.620 -4.620 0.001 0.001 0.009 0.017 0.022 15:07:10 No

Element: Sn Seq. No.: 61 AS Loc.: 11 Date: 04/26/2002 Sample ID: 9522 uL dispensed: 8 from 36, 5 from 37, 12 from 11

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L ug/L Signal Area Height Area Height Stored 1 -7.418 -7.418 -0.002 -0.002 0.008 0.019 0.019 15:09:54 No

Element: Sn Seq. No.: 62 AS Loc.: 12 Date: 04/26/2002 Sample ID: 9523 uL dispensed: 8 from 36, 5 from 37, 12 from 12

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L ug/L Signal Area Height Area Height Stored 1 -3.516 -3.516 0.002 0.002 0.010 0.016 0.020 15:12:39 No

Element: Sn Seq. No. : 63 AS Loc.: 13 Date: 04/26/2002 Sample ID: 9565 uL dispensed: 8 from 36, 5 from 37, 12 from 13

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L ug/L Signal Area Height Area Height Stored 1 -3.459 -3.459 0.002 0.002 0.009 0.016 0.020 15:15:25 No

Element: Sn Seq. No.: 64 AS Loc.: 2 Date: 04/26/2002 Sample ID: IPC uL dispensed: 8 from 36, 5 from 37, 12 from 2

Repl SampleConcl i StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L Xug/L Signal Area Height Area Height Stored 1 116.0 V 116.0 0.138 0.139 0.313 0.032 0.039 15:18:06 No QC out of limits. QC will be repeated based on Retry setting. Au saies of <* ol o Element: Sn Seq. No.: 65 AS Loc.: 2 Date: 04/26/2002 Sample ID: IPC uL dispensed: 8 from 36, 5 from 37, 12 from 2

Repl SampleCon StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L 116.6 < ug/L Signal 0.139 Area Height Area Height Stored 1 116.6 0.139 0.312 0.032 0.037 15:20:43 No QC out of limits. Current analytical sequence continued.

Page 9

NYC-WTC_000041929