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Document / 36 pages

Potassium sample log, WTC site, Nov 18 2001

Machine-extracted title · confidence 90%

Log entry for potassium sample processing activities at the World Trade Center site on November 18, 2001.

NYC-WTC_000065920–000065955

Folder label: “K 11/18/01

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NYC 9/11 Public Portal Document

Element: K Seq. No.: 64 AS Loc.: Date; 11/18/2001 Sample ID: 27483

Repl San^leConc StndConc BlnkCorr Time # Atg/L gg/L Signal 1 1871 1871 0.384 12:29:31 2 1912 1912 0.392 12:29:38 3 1898 1898 0.389 12:29:45 4 1910 1910 0.391 12:29:53 Mean: 1898 1898 0.389 SD : 18.61 18.61 0.004 %RSD: 0.98 0.98 0.98

Element: K Seq. No.: 65 AS Loc.: Date: 11/18/2001 Sample ID: 27484

Repl San^leConc StndConc BlnkCorr Time # Mg/i* Signal 1 530.1 530.1 0.108 12:30:13 2 528.8 528.8 0.108 12:30:20 3 529.8 529.8 0.108 12:30:27 4 526.2 526.2 0.107 12:30:34 Mean: 528.7 528.7 0.108 SD : 1.773 1.773 0.000 %RSD: 0.34 0.34 0.34

:=ssss:s5==sss:sBBs:=;ssssssessss==sssB&ssss3ss:sss;sas Element; K Seq. No.: 66 AS Loc.: Date: 11/18/2001 San5)le ID: 27485

Repl San^leConc StndConc BlnkCorr Time # Mg/L Signal 1 525.3 525.3 0.107 12:30:56 2 524.5 524.5 0.107 12:31:04 3 523.2 523.2 0.107 12:31:11 4 520.1 520.1 0.106 12:31:18 Mean: 523.3 523.3 0.107 SD : 2.284 2.284 0.000 %RSD: 0.44 0.44 0.44

Element; K Seq. No.: 67 AS Loc.: Date; 11/18/2001 Sample ID: 27486

Repl SampleConc StndConc BlnkCorr Time # /ig/l' Atg/L Signal 1 1899 1899 0.389 12:31:38 2 1914 1914 0.392 12:31:45 3 1939 1939 0.398 12:31:52 4 1942 1942 0.398 12:32:00 Mean: 1924 1924 0.394 SD : 20.56 20.56 0.004 %RSD; 1.07 1.07 1.07

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NYC-WTC_000065939

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NYC-WTC_000065939Source: NYC Law Department, mirrored locally

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