Laboratory sample list, DEP Box 24, May 21, 2002

NYC 9/11 Public Portal Document

Element: Sn Seq. No.: 95 AS Loc.: 16 Date: 05/21/2002 Sample ID: 12156 uL dispensed: 8 from 36, 5 from 37, 12 from 16

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L ug/L Signal Area Height Area Height Stored 1 -9.241 -9.241 -0.003 0.000 0.010 0.011 0.030 15:32:46 No

Element: Sn Seq. No.: 96 AS Loc.: 16 Date: 05/21/2002 Sample ID: 12156 uL dispensed: 5 from 36, 5 from 37, 3 from 38, 12 from 16

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L g ug/L Signal Area Height Area Height Stored 1 37.10 / 37.10 0.045 0.048 0.128 0.018 0.035 15:35:35 No Recovery is 74.2%(utside of specified limits)

Element: Sn Seq. No.: 97 AS Loc.: 16 Date: 05/21/2002 Sample ID: 12156 uL dispensed: 16 from 36, 5 from 37, 4 from 16

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L ug/L Signal Area Height Area Height Stored 1 -36.69 -12.23 -0.006 -0.003 0.009 0.013 0.028 15:38:17 No

Element: Sn Seq. No.: 98 AS Loc.: 16 Date: 05/21/2002 Sample ID: 12156 uL dispensed: 13 from 36, 5 from 37, 3 from 38, 4 from 16

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # 1 ug/L 138.3 ug/L 1 46.10 Signal 0.054 Area 0.057 Height 0.140 Area 0.015 Height Stored 0.039 15:41:05 No Recovery is 92.2%

Element: Sn Seq. No.: 99 AS Loc.: 2 Date: 05/21/2002 Sample ID: IPC uL dispensed: 8 from/36, 5 from 37, 12 from 2

Repl ' SampleConc tndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L g/L Signal Area Height Area Height Stored 1 97.25 97.25 0.106 0.110 0.282 0.024 0.050 15:43:44 No QC value within specified limits.

Element: Sn Seq. No.: 100 AS Loc.: 3 Date: 05/21/2002 Sample ID: CB uL dispensed: 8 from 36, 5 from 37, 12 from 3 Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ug/L ug/L Signal Area Height Area Height Stored 1 -8.364 1 -8.364 -0.002 0.001 0.009 0.007 0.025 15:46:20 No

Page 21

NYC-WTC_000042037