GCMS analysis results for sample AE03250, March 2002

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Laboratory report documenting gas chromatography-mass spectrometry analysis of environmental sample AE03250 conducted on March 15, 2002.

NYC-WTC_000006186–000006205

Folder label: “GCMS X 2/12/02 A 3/01/02”

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NYC 9/11 Public Portal Document

Data File : C:\MSDCHEM\1\5973N\02MAR01\03250.D Vial: 5 . Acq On : 1 Mar 2002 7:18 pm Operator: Sample : 508 scan Inst : Instrumen Mise : March 1, 2002 Multiplr: 1.00 MS Integration Params: LSCINT.P

Quant Method : C:\MSDCHEM\l..-\HP022102.M (RTE Integrator) Title : 508 scan method Library : C:\DATABASE\WILEY7N.L Peak Number 2 Propane, 1,l-dimethoxy-2-me... Concentration Rank 11 R.T. EstConc Area Relative to ISTD R.T. 3.93 0.08 ug/L 38023 1,4-Dichlorobenzene-d4 9.71 Hit# Of 5 Tentative ID MW MolForm CAS# Qual

1 Propane, 1,1-dimethoxy-2-methyl- 118 C6H14O2 041632-89-7 83 2 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 74 3 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 74 4 Propane, 1,1-dimethoxy-2-methyl-... 118 C6H14O2 041632-89-7 74 Abundance Scan 49 (3.927 min): 03250. D (-) m/z 75.00 100.00% 75

5000 87 55 ...................... ........................ 47 ' 1 । ' 1 ■ ■ i 1 1 1 1 i 1 1 1 1 i 1 1 1 1 i 41 71 3.60 3.80 4.00 4.20

m/z—> 0 5 m । I I । | । I I I |TI । । | I I I । | । I I | I ! I I | । I I I । I'

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 | . -H59 —H 84 - ' 111 ■' I " m/z 87.00 38.07%

Abundance #17846: Propane, 1,1-dimethoxy-2-methyl- 75

5000 1i’’ i ' ' ' ' i ' ' ' ‘ i 87 3.60 3.80 4.00 4.20 55 m/z 55.00 26.62% 31 2 47 71 m/z-> 0]-. TTUUTTTUTTTTTTTTETTTTTT TT — — * 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 H 59

Abundance #17847: ISOBUTYRALDEHYDE. DIMETHYLACETAL $$ 1 1-Dimethoxyi... 75 --AAA 3.60 3.80 4.00 4.20 5000 m/z 47.00 19.35% 87 31 47 55 59 71 Of . ... I ' ! I".... . Tp-T TT 1 I I I [ I I I I I I I I I ] I I I I — >■ i ■■।■ i ■ ■ n/z-> Abundance 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 #17848: ISOBUTYRALDEHYDE. DIMETHYLACETAL $$ 1 1-Dimethoxyi... 75 .........I.... A 3.60 3.80 4.00 4.20 m/z 45.10 13.14%

5000 87 A 55 15 27 31 47 71 ——

n/z-> 0b ■' i" aa| . - H +rrrrrrTTT 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 59 11 .......... 1, 3.60 3.80 4.00 4.20

3250.D HP022102.M Mon Mar 04 12:33:41 2002 Page 4

NYC-WTC_000006193

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