Tin lab results (SnF POTABLE), DEP Box 59, Oct 2001

NYC 9/11 Public Portal Document

Element: Sn Seq. No.: 282 AS Loc.: 1 Date: 10/10/2001 Sample ID: QCS pL dispensed: 8 from 36, 5 from 37, 12 from 1

Repl S ,eConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L Signal Area Height Area Height Stored 1 98.19 98.19 0.152 0.151 0.378 0.036 0.056 18:43:11 No QC value Iwith! lecified limits.

Element: Sn Seq. No.: 283 AS Loc.: 2 Date: 10/10/2001 Sample ID: IPC pL dispensed: 8 from 36, 5 from 37, 12 from 2

Repl Sai dnc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/ \ pg/L Signal Area Height Area Height Stored 1 9 / 100.5 0.155 0.154 0.375 0.038 0.059 18:45:47 No QC value Z^jpecified limits.

Element: Sn Seq. No.: 284 AS Loc.: 3 Date: 10/10/2001 Sample ID: CB pL dispensed: 8 from 36, 5 from 37, 12 from 3

Repl Sj 1^ Ipnc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # ig/L / pg/L Signal Area Height Area Height Stored 1 -4.7 / -4.773 0.002 0.001 0.003 0.014 0.022 18:48:23 No

Element: Sn Seq. No.: 285 AS Loc.: 4 Date: 10/10/2001 Sample ID: LFB pL dispensed: 8 from 36, 5 from 37, 12 from 4

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/*-^^\ /pg/L Signal Area Height Area Height Stored 1 f 197.6 IJ 197.6 0.296 0.295 0.696 0.062 0.113 18:51:00 No QC value within/specified limits.

Element: Sn Seq. No.: 286 AS Loc.: 5 Date: 10/10/2001 Sample ID: LRB pL dispensed: 8 from 36, 5 from 37, 12 from 5

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg^i^^ yig/L Signal Area Height Area Height Stored 1 (-6.30>x / -6.302 0.000 -0.001 0.002 0.015 0.023 18:53:36 No

Page 72

NYC-WTC_000065113