GCMS blank analysis results, sample AE00938, March 1, 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\HPCHEM\1\DATA\FEB21O2\LBD. D Vial: 57 Acq On : 24 Feb 2002 12:14 am Operator: Sample : gc/ms scan 2/21 Inst : GC/MS 209 Mise Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\HPCHEM\1\METHODS\GCMS0208.M (RTE Integrator) Title : 209 625/TCLP calibration table Library : C:\DATABASE\NBS75K.L ********************************************************************* Peak Number 1 N-Ethylformamide Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T. 8.21 2.71 ug/1 140443 1,4-Dichlorobenzene-d4 12.33 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 N-Ethylformamide 73 C3H7NO 000627-45-2 5 2 1,3-Dioxolane, 2-(1-methylpropyl) - 130 C7H1402 014447-25-7 4 3 Formic acid, ethyl ester 74 C3H602 000109-94-4 4 4 Silane, tetramethyl- 88 C4H12S1 000075-76-3 4 Abundance 7 Scan 345 (8.207 min): LBD.D (-) m/z 73 .00 100.00% 73

5000 43 )?* urn -I J l I J I 87 103 7.80 8.00 8.20 8.40 8.60 ........................ 11149 ............ .11 ‘ • i ‘ ’ * • I 11 * • I 14/8/4/4 I ′ • » I • —p * * I 1 1 ’ 1 i ‘ m/z 42.95 30.21% m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #292: N-Ethylformamide 30 73 .................... ............................ 5000 44 58 7.80 8.00 8.20 8.40 8.60 m/z 45.05 “ 12.11% 15 p ................ .. ' ’ 1 • aaa***** _ _______ 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance 14 ’ । SDexolenc . - ■. 73

7.80 8.00 8.20 8.40 8.60 ‘ 5000 m/z 41.05 11.30% 45 27 57 85 99 129 ‘41*‘‘‘I‘‘**1****)**1**/*1/1* 1111 m/z-> 10 20 30__ 40 50 60 70 80 90 100 110. 120 130 Abundance #62551: Formic acid, ethyl ester T________ i ■ ■ ■ ‘ i ■ ■ • ■ i ■ ■ ■ ■ i • ■ ■ ■ । ■ 29 7.80 8.00 8.20 8.40 8.60 m/z 71.00 “ 7.15% 5000 45

74

m/z-> ‘ ■ i ■ ■ ■11 ■ ‘ 10 20 — 1 — 59 30 40 50 60 1 1 ■ i ■ • ■ • i ■1 ■ ■ i1 ■ ■ ■ i ■ •1 ■ 1111111' 70 80 90 100 110 TI ‘++‘1′1 120 130 7.80 8.00 8.20 8.40 8.60

LBD.D GCMS0208.M Fri Mar 01 09:14:34 2002 Page 1

NYC-WTC_000009563