GCMS analysis results for sample AE03251, March 2002

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Laboratory report documenting gas chromatography-mass spectrometry analysis of environmental sample AE03251 conducted on March 15, 2002.

NYC-WTC_000006206–000006225

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

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NYC 9/11 Public Portal Document y DCCLii wLpuli RCDOL L

Data File : C: \MSDCHEM\1\5973N\02MAR01\03251.D Vial: 6 • Acq On : 1 Mar 2002 8:07 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.

3.92 0.06 ug/L 26230 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 9 2 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 9 3 Formamide, N-methylthio 75 C2H5NS 000000-00-0 4 4 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H1402 000000-00-0 4 Abundance Scan 48 (3.916 min): 03251.D (-) m/ z 75.00 100.00% 75

5000 87 55 ■ 1 i ■ 1 I ' 1 ' 1 1 1 1 ' 1 1 41 E 3.60 3.80 4.00 4.20 I 45 51 0 . .......... 1 -Tt 11'1" i' ■ m/ Z 87.00 41.78% •n/z-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #17846: Propane, 1,1-dimethoxy-2-methyl- 75

5000 87 3.60 3.80 4.00 4.20 55 m/z 55.10 24.71% 31 43 ! | 2 47 59 71 0-PPT ■ I I ■ flj I I I I I I I I I I ■ ■ I < ""I"............ 1111 I । ।' I ।' i 111 .... 'I" miz-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #17849: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1,1-Dimethoxyi... 70 3.60 3.80 4.00 4.20 5000 m/z 41.10 13.80% 87 55 29 41 47 59 71 0 ।11111111H111111 । "|l1111111111" 1 " 111।" 111 ■ ।' 1,111" " i1 11111" i “ m/z— > Abundance 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 #2211: Formamide, N-methylthio 75 ... AAAMAA/w 3.60 3.80 4.00 4.20 m/z 45.10 8.56%

5000 30 42 45 '60

/z—> 0 I''' ‘ I' 1 33 " 111 " " I' —f 11'11111111111 — 11 ■ ■ i ■ - ■ ■ i ■ ■ ■ • i ■ ■ ■ ■ i 1 ■ .............................................. 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 3.60 3.80 4.00 4.20

33251.D HP022102.M Mon Mar 04 12:33:47 2002 Page 4

NYC-WTC_000006213

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NYC-WTC_000006213Source: NYC Law Department, mirrored locally

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