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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_000065903
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NYC 9/11 Public Portal Document

Element; K Seq. No.: 64 AS Log.: Date: 11/12/2001 Sample ID: Blk

Repl SampleConc StndConc BlnkCorr Time # gg/L Atg/h Signal 1 -35.99 -35.99 -0.007 16:08:17 2 -31.28 -31.28 -0.006 16:08:24 3 -34.07 -34.07 -0.007 16:08:31 4 -24.97 -24.97 -0.005 16:08:38 Mean; -31.58 -31.58 -0.006 SD : 4.813 4.813 0.001 %RSD: 15.24 15.24 14.34

SSS&SSSeSSSSSBCSBaSStSB&SeSBCSSeSSSSGSSSSSaSSSSSStSBBSaSSsaSBSSBSSSSSSSSSSS&S&SBBSSBSSSBCSSSSSSSSSSBSSS&SSSSSBSSSSSSSS

Element: K Seq. No.: 65 AS Log.: Date: 11/12/2001 San^Jle ID: 27110

Repl SampleConc StndConc BlnkCorr Time # gg/h gg/L Signal 1 518.5 518.5 0.095 16:09:02 2 526.2 526.2 0.097 16:09:10 3 518.6 518.6 0.095 16:09:17 4 517.8 517.8 0.095 16:09:24 Mean: 520.3 520.3 0.096 SD : 3.960 3.960 0.001 %RSD: 0.76 0.76 0.76

Element: K Seq. No.: 66 AS Log.: Date: 11/12/2001 San^jle ID: 27111

Repl SampleConc StndConc BlnkCorr Time # gg/L gg/L Signal 1 505.7 505.7 0.093 16:09:47 2 493.9 493.9 0.091 16:09:54 3 497.4 497.4 0.091 16:10:02 4 505.6 505.6 0.093 16:10:09 Mean: 500.6 500.6 0.092 SD : 5.945 5.945 0.001 %RSD: 1.19 1.19 1.19

Element: K Seq. No.: 67 AS Log.: Date: 11/12/2001 Sample ID: 27112

Repl SampleConc StndConc BlnkCorr Time # gg/L gg/L Signal 1 2197 2197 0.404 16:10:36 San^le absorbance is greater than that of the highest standard. 2 2181 2181 0.402 16:10:43 3 2205 2205 0.406 16:10:50 Sample absorbance is greater than that of the highest standard. 4 2221 2221 0.409 16:10:57 San^jle absorbance is greater than that of the highest standard. Mean: 2201 2201 0.405 SD : 16.53 16.53 0.003 %RSD: 0.75 0.75 0.75 San^ale absorbance is greater than that of the highest standard.

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NYC-WTC_000065903

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NYC-WTC_000065903Source: NYC Law Department, mirrored locally

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