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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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Scanned page image, NYC-WTC_000065898
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OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document eSBSSS8SS;C3&BBSISaSB8=SSa8BBBSSa8SBSSSSSSSBBBS3SSBSeS8B3SSSSBBBSS5SSSaS8SBSSSSa8SBSSSS8Be5ZSaBaSCSSSSSSB8SBaBBSSSSBB5XS=

Element: K Seq. No.: 44 AS Loc.: --- Date: 11/12/2001 San^le ID: Blk

Repl San^leConc StndConc BlnkCorr Time # gg/L Mg/L Signal 1 -42.50 -42.50 -0.008 15:53:28 2 -38.89 -38.89 -0.008 15:53:35 3 -33.33 >33.33 -0.007 15:53:42 4 -37.13 <-37.13 -0.007 15:53:50 Mean: -37.96 -37.96 -0.007 SD : 3.811 3.811 0.001 %RSD: 10.04 10.04 9.54

Element: K Seq. No.; 45 AS hoc.: Date: 11/12/2001 Sample ID: 26987spk

Repl SawpleConc StndConc BlnkCorr Time # /ig/L Mg/L Signal 1 2454 490.7 0.090 15:54:14 2 2455 490.9 0.090 15:54:21 3 2423 484.5 0.089 15:54:28 4 2472 494.4 0.091 15:54:35 Mean: 2451 490.1 0.090 SD : 20.52 4.105 0.001 %RSD: 0.84 0.84 0.84

Element: K Seq. No.: 46 AS Loc.: Date: 11/12/2001 Sample ID: 26988

Repl SanqoleConc StndConc BlnkCorr Time # Mg/L pg/L Signal 1 545.3 545.3 0.100 15:54:55 2 547.5 547.5 0.101 15:55:02 3 530.4 530.4 0.097 15:55:09 4 536.3 536.3 0.098 15:55:17 Mean: 539.9 539.9 0.099 SD : 7.959 7.959 0.001 %RSD: 1.47 1.47 1.48

Element: K Seq. No.: 47 AS Loc.: Date: 11/12/2001 San^jle ID: 26991

Repl San^leConc StndConc BlnkCorr Time # gg/L gg/i* Signal 1 2178 2178 0.401 15:55:37 2 2179 2179 0.401 15:55:44 3 2165 2165 0.399 15:55:52 4 2157 2157 0.397 15:55:59 Mean: 2170 2170 0.399 SD : 10.57 10.57 0.002 %RSD: 0.49 0.49 0.49

Page 15

NYC-WTC_000065898

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NYC-WTC_000065898Source: NYC Law Department, mirrored locally

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