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Document / 33 pages

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.: 96 AS Log.: Date: 10/30/2001 • Sample ID: 26011

Repl San^jleConc StndConc BlnkCorr Time # Mg/L gg/L Signal 1 525.7 525.7 0.099 15:29:58 2 538.9 538.9 0.102 15:30:06 3 534.9 534.9 0.101 15:30:13 4 530.0 530.0 0.100 15:30:20 Mean: 532.4 532.4 0.101 SD : 5.725 5.725 0.001 %RSD: 1.08 1.08 1.01

Element: K Seq. No.: 97 AS Log.: Date: 10/30/2001 San^le ID: 26078

Repl San^leConc StndConc BlnkCorr Time # gg/L Signal 1 500.8 500.8 0.095 15:30:46 2 497.4 497.4 0.094 15:30:54 3 503.3 503.3 0.095 15:31:01 4 492.2 492.2 0.093 15:31:08 Mean: 498.4 498.4 0.095 SD : 4.805 4.805 0.001 %RSD: 0.96 0.96 0.90

Element: K Seq. No.: 98 AS Log.: Date: 10/30/2001 Sample ID: 26078dup

Repl San^leConc StndConc BlnkCorr Time # Mg/L /tg/L Signal 1 492.0 492.0 0.093 15:31:18 2 434.7 434.7 0.083 15:31:25 3 487.4 487.4 0.093 15:31:32 4 484.2 484.2 0.092 15:31:40 Mean: 474.6 474.6 0.090 SD : 26.75 26.75 0.005 %RSD: 5.64 5.64 5.25

Element: K Seq. No.: 99 AS Log.: Date: 10/30/2001 Sample ID: 26078dup

Repl Sati^sleConc StndConc BlnkCorr Time # /ig/L Mg/L Signal 1 483.7 483.7 0.092 15:31:53 2 480.8 480.8 0.091 15:32:00 3 486.5 486.5 0.092 15:32:08 4 483.5 483.5 0.092 15:32:15 Mean; 483.6 483.6 0.092 SD : 2.336 2.336 0.000 %RSD: 0.48 0.48 0.45

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NYC-WTC_000065878

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NYC-WTC_000065878Source: NYC Law Department, mirrored locally

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