Asbestos lab analysis batch results, Jan 18 2002

NYC 9/11 Public Portal Document PerkinElmer AAWinlab: 02/01/2002, 12:58:10 PM

# pg/L pg/L Signal Area Height Area Height Stored 1 0.75 0.75 -0.0025 0.0026 0.0050 0.0047 0.0072 01:00:02 No

Element: T1 Seq. No.: 40 AS Loc.: 30 Date: 02/01/2002 Sample ID: 27955 pL dispensed: 10 from 86, 20 from 30

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L ' Signal Area Height Area Height Stored 1 0.63 0.63 -0.0026 0.0025 0.0017 0.0062 0.0113 01:03:45 No

Element: Ti Seq. No.: 41 AS Loc.: 31 Date: 02/01/2002 Sample ID: 27956 pL dispensed: 10 from 86, 20 from 31

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 0.62 0.62 -0.0027 0.0024 0.0024 0.0083 0.0133 01:07:29 No

Element: Ti Seq. No.: 42 AS Loc.: 32 Date: 02/01/2002 Sample ID: 27957 pL dispensed: 10 from 86, 20 from 32

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 0.08 0.08 -0.0033 0.0018 0.0018 0.0169 0.0161 01:11:12 No

Element: Ti Seq. No.: 43 AS Loc.: 2 Date: 02/01/2002 Sample ID: IPC pL dispensed: 10 ri , 20 from 2

Repl SampleCon itndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ___ g/L Signal Area Height Area Height Stored 1 36.8 36.8 0.0432 0.0483 0.0332 0.0277 0.0205' 01:14:55 No QC failei value ess than lower limit for Ti.

Element: Ti Seq. No.: 44 AS Loc.: 2 Date: 02/01/2002 Sample ID: IPC pL dispensed: 10^from 86, 20 from 2

Repl SampleCono StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L . I pg/L Signal Area Height Area Height Stored 1 47.4^ 47.4 0.0565 0.0616 0.0386 0.0151 0.0142 01:18:38 No QC value within specified limits.

Element: Ti Seq. No.: 45 AS Loc.: 3 Date: 02/01/2002 Sample ID: CB pL dispensed: 10 from 86, 20 from 3

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 146 146 0.1809 0.1860 2.7808 0.3914 1.9696 01:22:21 No The height of this peak exceeds the rollover value. Sample absorbance is greater than that of the highest standard. QC value within specified limits.

Page -8-

NYC-WTC_000084185