Selenium backlog report, Sept-Oct 2001

NYC 9/11 Public Portal Document

Element: Se Seg. No.: 66 AS Loc.: 38 Date: 10/03/2001 San^le ID: S15 dispensed: 5 from 36, 5 from 37, 20 from 8, 15 from 38

Repl San^leConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # gg/L Signal Area Height Area Height Stored 1 0.048 0.051 0.068 0.076 0.038 16:45:47 No Addition number 3 applied. [15.00] Correlation Coefficient: 0.9954 Slope: 0.0031

Element: Se Seq. No.: 67 AS Loc.: 38 Date: 10/03/2001 San5)le ID: S20 gL dispensed: 5 from 37, 20 from 8, 20 from 38

Repl San^leConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd, _Time Peak * # gg/L Signal Area Height Area Height Stored 1 0.065 0.068 0.097 0.112 0.050 16:48:26 No Addition number 4 applied. [20.00] Correlation Coefficient: 0.9970 Slope: 0.0032

Se 0.08 “T

0.06“

8 ■ g 0.0«- o r 0.02-

0 -T I - 0 10 20 30

Concentration

Calibration data for Se Entered Calculated Mean Signal Concentration Concentration Standard Standard ID (Pk Area) (/tg/L) (gg/L) Deviation %RSD Calib Blank 0.000 -0.2409 S5 0.016 5.00 4.691 SIO 0.028 10.00 8.524 S15 0.048 15.00 14.70 S20 0.065 20.00 20.00 Correlation Coefficient: 0.99703 Slope: 0.00323 Intercept: -0.001

[Se] Sample Concentration -0.1774 gg/L

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NYC-WTC_000065328