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GCMS analysis results, sample AE01139, 2,4-DDD, Feb 2002

Machine-extracted title · confidence 92%

Gas chromatography-mass spectrometry analysis report for sample AE01139 detecting surrogate 2,4-DDD at 76 ug with MDL of 5.0, analyzed on 02/27/2002.

NYC-WTC_000003483–000003502

Folder label: “GCMS X 1/20/02 A 2/25/02”

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NYC 9/11 Public Portal Document

Data File : C:\MSDCHEM\1\5973N\02FEB25\01139.D Vial: 5 Acq On : 25 Feb 2002 2:32 pm Operator: ' Sample : 508 scan Inst : Instrumen Mise : February 2 5, 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 4 ISOBUTYRALDEHYDE, DIMETHYLA... Concentration Rank 8

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

3.92 0.08 ug/L 24448 1,4-Dichlorobenzene-d4 9.72

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H1402 000000-00-0 83 2 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 64 3 Propane, 1,1-dimethoxy-2-methyl-... 118 C6H14O2 041632-89-7 64 4 ISOBUTYRALDEHYDE, DIMETHYLACETAL... 118 C6H14O2 000000-00-0 9 Abundance Scan 48 (3.916 min): 01139.D (-) m/z 75.00 100.00% 75

5000 87 55 I ' । ' I । । ■ I 41 47 51 3.60 3.80 4.00 4.20 Ob — 1 ■ I'' ।11 > 111111 11"1 > । > *। >... ।. । m/z 87.10 34.95% m/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #17848: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1 1-Dimethoxyi... 75

5000 87 3.60 3.80 4.00 4.20 55 m/z 55.10 23.55% 15 47 59 71 0- "I1 mmT —mt ’'I""!" m/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #17847: ISOBUTYRALDEHYDE, DIMETHYLACETAL $$ 1 1-Dimethoxyi... 75

3.60 3.80 4.00 4.20 5000' m/z 47.00 17.11% 87 31 47 55 I 43 Of TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT T-p-f 59 Pm 71 '"‘i ""i1 I"" I" n/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #17844: Propane, 1,1-dimethoxy-2-methyl-$$ Isobutylaldehy... 75 LAAAA 3.60 3.80 1 I ' 1 ■ ■ i ■ 1 ■ ■ i 4.00 4.20 m/z 41.10 12.96%

5000 87 31 47 55

0 I 43 59 71 TTIWTTITTTITTITTTTTTTTTT11’1 HpT —Tpt Iprvil’i m/z—> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 3.60 3.80 4.00 4.20

91139.D HP022102.M Tue Feb 26 08:30:10 2002 Page 6

NYC-WTC_000003492

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NYC-WTC_000003492Source: NYC Law Department, mirrored locally

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GCMS analysis results, Feb 27 2002 · Box DEP Box 12

NYC-WTC_000003463

Gas chromatography-mass spectrometry results for sample AE01138 identifying unknown compounds and surrogates on February 27, 2002.

1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.998

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