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Document / 33 pages

Potassium sample log, WTC site, Nov 12 2001

Machine-extracted title · confidence 90%

Log entry for potassium sample processing at the World Trade Center site on November 12, 2001.

NYC-WTC_000065886–000065918

Folder label: “K 11/12/01

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NYC 9/11 Public Portal Document

Element: K Seq. No.: 115 AS hoc.: - Date: 11/12/2001 Sample ID: Blk

Repl San^leConc StndConc BlnkCorr Time # Mg/L Signal 1 29.66 29.66 0.005 16:49:35 2 14.24 14.24 0.002 16:49:43 3 8.925 8.925 0.001 16:49:50 4 0.002 16:49:57 Mean: 16.63 0.003 SD ; OOFA 9. -_ 9.005 0.002 %RSD: 61.49

Element: K Seq. No,: 116 AS LOC.: - Date: 11/12/2001 Sample ID: 27446

Repl San^leConc StndConc BlnkCorr Time # Signal 1 1968 1968 0.362 16:50:17 2 1966 1966 0.362 16:50:24 3 1976 1976 0.364 16:50:31 4 1961 1961 0.361 16:50:39 Mean: 1968 1968 0.362 SD : 6.187 6.187 0.001 %RSD: 0.31 0.31 0.31

Element: K Seq. No.: 117 AS Iioc. : Date: 11/12/2001 Sample ID: 27447

Repl San^leConc StndConc BlnkCorr Time # Mg/L Mg/L Signal 1 477.8 477.8 0.088 16:51:02 2 477.0 477.0 0.088 16:51:09 3 472.3 472.3 0.087 16:51:16 4 470.3 470.3 0.086 16:51:23 Mean: 474.4 474.4 0.087 SD : 3.612 3.612 0.001 %RSD: 0.76 0.76 0.76

Element: K Seq. No.: 118 AS Log.; Date: 11/12/2001 Sample ID: 27448

Repl SampleConc StndConc BlnkCorr Time # Mg/L Atg/L Signal 1 465.0 465.0 0.085 16:51:51 2 475.3 475.3 0.087 16:51:58 3 453.0 453.0 0.083 16:52:05 4 459.8 459.8 0.084 16:52:12 Mean: 463.3 463.3 0.085 SD : 9.398 9.398 0.002 %RSD: 2.03 2.03 2.04

Page 33

NYC-WTC_000065916

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NYC-WTC_000065916Source: NYC Law Department, mirrored locally

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