Selenium lab results, WTC samples, Oct 12 2001

NYC 9/11 Public Portal Document

Qgiyjration data for Se Entered Calculated Mean Signal Concentration Concentration Standard Standard ID (Pk Area) (/ig/L) (/ig/b) Deviation %RSD Calib Blank 0.000 -0.4972 S2 0.014 2 2.181 S4 0.024 4 4.158 S6 0.035 6 6.266 S8 0.048 8 8.757 SIO 0.050 10 9.135 Correlation Coefficient: 0.98810 Slope; 0.00522 Intercept: 0.003

The calibration curve has been edited.

Element: Se Seq. No.: 78 AS boc.: 1 Date: 10/12/2001 Sample ID: QCS fih dispensed: 10 from 36, 5 from 37, 20 from 1 fih dispensed: 10 from 36, 5 from 37, 20 from 1

Repl SanpleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak gg/b Signal Area Height Area Height Stored 6.940 6.940 0.042 0.043 0.050 0.024 0.020 15:39:42 No iC out of limits. will be repeated based on Retry setting.

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EletnenfTSe Seq. No.: 79 AS Loc.: 1 Date: 10/12/2001 Sample ID: QCS lih dispensed: 10 from 36, 5 from 37, 20 from 1 IJLh dispensed: 10 from 36, 5 from 37, 20 from 1

Repl SanpleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # gg/lH^ \ gg/b Signal Area Height Area Height Stored 1 / 5.449 5.449 0.033 0.034 0.043 0.023 0.014 15:43:54 No QC valuelwithin specified limits.

Element: Se Seq. No.: 80 AS Loc.: 2 Date: 10/12/2001 Sample ID; IPC gL dispensed: 10 from 36, 5 from 37, 20 from 2 fill dispensed: 10 from 36, 5 from 37, 20 from 2

Repl SanpleConc. StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # gg/b Signal Area Height Area Height Stored 1 I 5.497 J 5.497 0.033 0.035 0.046 0.021 0.018 15:48:07 No QC value\within) specified limits.

Element: Se Seq. No.: 81 AS boc.: 3 Date: 10/12/2001 Sample ID: CB ’ /iL dispensed: 10 from 36, 5 from 37, 20 from 3 Uh dispensed: 10 from 36, 5 from 37, 20 from 3

Repl SampYeConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # Atg/^ \ Mg/b Signal Area Height Area Height Stored 1 —0763617 0.6361 0.005 0.006 0.011 0.010 0.013 15:52:19 No

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