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Potassium sample log, WTC site, Oct 30 2001

Machine-extracted title · confidence 90%

Log entry for potassium sample processing activities at the World Trade Center site on October 30, 2001.

NYC-WTC_000065852–000065884

Folder label: “K 10/30/01

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NYC 9/11 Public Portal Document

Element: K Seq. No.: 20 AS LOG.: Date: 10/30/2001 , SampJLe ID: Blk

Repl San^leConc StndConc BlnkCorr Time # Mg/L Signal 1 -16.92 -16.92 0.005 11:48:07 2 -29.00 -29.00 0.003 11:48:15 3 -22.33 -22.33 0.004 11:48:22 4 -28.62 -28.62 0.003 11:48:29 Mean: -24.22 -24.22 0.004 SD : 5.747 5.747 0.001 %RSD: 23.73 23.73 26.63

:SSSS BBSS BBSS = S:

Element: K Seq. No.: 21 AS Log.: Date: 10/30/2001 Sample ID: 25461

Repl SanipleConc StndConc BlnkCorr Time # /ig/L /ig/L Signal 1 543.8 543.8 0.112 11:48:52 2 546.2 546.2 0.112 11:49:00 3 540.8 540.8 0.111 11:49:07 4 545.1 545.1 0.112 11:49:14 Mean: 544.0 544.0 0.112 SD : 2.322 2.322 0.000 %RSD: 0.43 0.43 0.39

Element: K Seq. No.: 22 AS Log.: Date: 10/30/2001 Sample ID: 25462

Repl SampleConc StndConc BlnkCorr Time # Atg/L /^g/L Signal 1 539.4 539.4 0.111 11:49:39 2 533.8 533.8 0.110 11:49:46 3 530.6 530.6 0.109 11:49:54 4 533.7 533.7 0.110 11:50:01 Mean: 534.4 534.4 0.110 SD : 3.650 3.650 0.001 %RSD: 0.68 0.68 0.63

:SBBBBBBBSBBB8BBBBSS:

Element: K Seq. No.: 23 AS Log.: Date: 10/30/2001 San^jle ID: 25463

Repl San^leConc StndConc BlnkCorr Time # ;tg/L Signal 1 548.5 548.5 0.113 11:50:24 2 544.5 544.5 0.112 11:50:31 3 538.6 538.6 0.111 11:50:38 4 538.0 538.0 0.111 11:50:46 Mean: 542.4 542.4 0.112 SD : 5.036 5.036 0.001 %RSD: 0.93 0.93 0.86

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NYC-WTC_000065858

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NYC-WTC_000065858Source: NYC Law Department, mirrored locally

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