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Document / 34 pages

DEP batch record cover sheet, Feb 20, 2002

Machine-extracted title · confidence 100%

Cover sheet listing water sample IDs and quality control checks for the February 20, 2002 DEP batch.

NYC-WTC_000086060–000086093

Folder label: “SN 2/20/02”

←Page 6 of 34→
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NYC 9/11 Public Portal Document

. Elem&ht: Sn Seq. No.: 31 AS Loc.: 15 Date: 02/20/2002 Sample ID: 1965 pL dispensed: 8 from 36, 5 from 37, 12 from 15

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 -8.566 -8.566 -0.006 -0.005 0.013 0.019 0.027 12:01:51 No

Element: Sn Seq. No.: 32 AS Loc.: 16 Date: 02/20/2002 Sample ID: 1966 pL dispensed: 8 from 36, 5 from 37, 12 from 16

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 -4.845 -4.845 -0.002 0.000 0.012 0.018 0.025 12:04:34 No

Element: Sn Seq. No.: 33 AS Loc.: 16 Date: 02/20/2002 Sample ID: 1966 pL dispensed: 5 from 36, 5 from 37, 3 from 38, 12 from 16

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 40.24 40.24 0.049 0.050 0.147 0.023 0.035 12:07:23 No Recovery is 80.5% ,(outside of specified limits) =4^==== Element: Sn Seq. No.: 34 AS Loc.: 16 Date: 02/20/2002 Sample ID: 1966 |1L dispensed: 16 from 36, 5 from 37, 4 from 16

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 -12.80 -4.268 -0.001 0.000 0.016 0.013 0.025 12:10:04 No

Element: Sn Seq. No.: 35 AS Loc.: 16 Date: 02/20/2002 Sample ID: 1966 pL dispensed: 13 from 36, 5 from 37, 3 from 38, 4 from 16

Repl SampleConc StndConc ^nkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L / Signal Area Height Area Height Stored 1 136.6 / 0.055 0.056 0.147 0.022 0.036 12:12:52 No Recovery is 91.1%

Element: Sn Seq. No.: 36 AS Loc.: 17 Date: 02/20/2002 Sample ID: 1968 pL dispensed: 8 from 36, 5 from 37, 12 from 17

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/L pg/L Signal Area Height Area Height Stored 1 -5.643 -5.643 -0.003 -0.001 0.014 0.018 0.026 12:15:34 No

Page 8

NYC-WTC_000086065

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NYC-WTC_000086065Source: NYC Law Department, mirrored locally

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