GCMS analysis report for sample AE01510, March 2002

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GCMS laboratory results for sample AE01510 conducted on March 5, 2002, showing surrogate recovery and unknown compounds.

NYC-WTC_000010027–000010046

Folder label: “GCMS X 1/23/02 A 2/21/02”

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Data File : C:\MSDCHEM\l\5973N\02FEB21\01510.D Vial: 5 Acq On : 21 Feb 2002 2:17 pm Operator: Sample : 508 scan Inst : Instrumen Mise : February 21, 2002 Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\MSDCHEM\1...\HP022102.M (RTE Integrator) Title : 508 scan method Library : C:\DATABASE\WILEY7N.L ********************************************************************* Peak Number 3 ISOBUTYRALDEHYDE, DIMETHYLA... Concentration Rank 9

R.T. EstConc Area Relative to ISTD R.T.

3.93 0.08 ug/L 37728 1,4-Dichlorobenzene-d4 9.72

Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 83 2 Propane, 1,l-dimethoxy-2-methyl - 118 C6H1402 041632-89-7 83 3 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 83 4 Butane, 1,1-dimethoxy- (CAS) $$ ... 118 C6H14O2 004461-87-4 9 Abundance Scan 49 (3.927 min): 01510.D (-) m/z 75.00 100.00% 75

5000 55 87 ..... ■ ■ । ‘ A......... ■ । ■ ■ ■ ■ । ■ ■ ■ ■ । • ■ ■ ■ ।

m/z-> Oh i ■ ■ ■11 •" ■ i 1 11"111' . ..... 1. 4147 l”"l* “ i “ " i ■' 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 71 m/z 3.60 3.80 87.10 4.00 4.20 36.08% Abundance #17848: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1 1-Dimethoxyi... 75

5000 I 1 ‘ ■ i ■ ■ ' ■ i 87 3.60 3.80 4.00 4.20 55 m/z 55.10 29.70% 15 27 31 47 59 71 Oh “ i" TIuIp—ntmubn—ngT TpH fmmt Pyaupar miz-> 5 10 15 20 25 X) 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #17846: Propane, 1,1-dimethoxy-2-methyl- 75 1’ • • i > • • • i 3.60 3.80 4.00 4.20 5000 m/z 47.00 14.35% 87 55 A 0b “ !' ‘ " I ‘ 31 4347 59 71 ' I ' “ ‘ I' ' 1' I ।' " I' mH HHtpgT - 1 ■ i" " i ■ ■ miz-> 5 10 15 20253035404550556065 70 7580859095 Abundance #17849: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1 1-Dimethoxyi... 18.1 1dI 75 3.60 3.80 4.00 4.20 m/z 41.10 13.02% 5000 87 55

oh 29 41 47 59 ** —mm Byaaaap 71 AAMAA AA mfe-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 SO 95 3.60 3.80 4.00 4.20

01510.D HP022102.M Mon Feb 25 10:55:09 2002 Page 5

NYC-WTC_000010035

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NYC-WTC_000010035Source: NYC Law Department, mirrored locally

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