Selenium lab results, WTC samples, Nov 26 2001

NYC 9/11 Public Portal Document

Calibration data for Se Entered Calculated Mean Signal Concentration Concentration Standard Standard ID (Pk Area) (gg/L) (ms/l) Deviation %RSD Calib Blank 0.000 -0.3135 S2 0.018 2 2.505 S4 0.026 4 3.741 S6 0.041 6 6.100 S8 0.054 8 8.124 SIO 10 9.843 Correlation Coefficient 0.99666 Slope; 0.00634 Intercept: 0.002

Element: Se Seg. No.; 7 AS Loc.: 1 Date: 11/26/2001 Sample ID: QCS gL dispensed: 10 from 36, 5 from 37, 20 from 1 gL dispensed: 10 from 36, 5 from 37, 20 from 1

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # MS/b gg/b Signal Area Height Area Height Stored 1 6.402 6.402 0.043 0.043 0.077 0.038 0.030 10:15:34 No QC out of limit^^^C will be repeated based on Retry setting.

SBBSSSSBSBSSSSBSSSaSSSSSSBBBSSSSaSSSSSSSBBSSBBSSSSSSSBSSSSSSSBBBSSSBSSSSSSSSSSSSBSSBSSSS:

Element: Se Seq. No.; 8 AS Loc.: 1 Date: 11/26/2001 Sample ID: QCS fill dispensed: 10 from 36, 5 from 37, 20 from 1 fill dispensed: 10 from 36, 5 from 37, 20 from 1

Repl San^leConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # gg/L gg/L Signal Area Height Area Height Stored 1 5.498 5.498 0.037 0.038 0.072 0.041 0.033 10:19:48 No QC value within specified limits.

IlOr SaSBSBSSSSSSBSSSSBSSSaiSSBBaSSSSSBBSBBSSSBBSSSBSSSaBSSBSSSSSSSSBSSSSBBSSSSBSSSSSSSBaSSBSSSSSSSBSSS

Element: Se Seq. No.: 9 AS Loc.: 2 Date: 11/26/2001 San^Jle ID: I PC gL dispensed: 10 from 36, 5 from 37, 20 from 2 gL dispensed: 10 from.36, 5 from 37, 20 from 2

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # gg/L fig/lj Signal Area Height Area Height Stored 1 5.349 5.349 0.036 0.037 0.068 0.037 0.028 10:24:02 No QC value within specified limits.

SSSBBSSSSSSSSSSSSSSSBSSSSSSBSSSSBBSBSSS :SB

Element: Se Seq. No.: 10 AS Loc.: 3 Date: 11/26/2001 Sample ID: CB fill dispensed: 10 from 36, 5 from 37, 20 from 3 fill dispensed: 10 from 36, 5 from 37, 20 from 3

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # pg/b / fig/lj Signal Area Height Area Height Stored 1 0.3208 / 0.3208 0.004 0.005 0.012 0.025 0.013 10:28:15 No

Page 4

NYC-WTC_000065725