GCMS analysis results for sample AD31676, Jan 2002

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Laboratory report for sample AD31676 documenting detection of unknown compounds and surrogate recovery on January 25, 2002.

NYC-WTC_000050317–000050333

Folder label: “GCMS X 1/3/02 A 1/22 - 1/23/02”

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NYC 9/11 Public Portal Document Library Search Compound Report Data File : C: \MSDCHEM\1\5973N\02JAN23\31676.D Vial: 1 Acq On : 23 Jan 2002 2:57 pm Operator: Sample : 508 scan Inst : Instrumen Mise : January 22, 2002 Multiplr: 1.00 MS Integration Params: LSCINT.P

Quant Method : C:\MSDCHEM\1...\SCAN508.M (RTE Integrator) Title : 508 scan method Library : C:\DATABASE\WILEY7N.L ********************************************************************* Peak Number 2 3-Methyl-2,3-epoxybutanal Concentration Rank 5 R.T. EstConc Area Relative to ISTD R.T. 4.24 0.16 ug/L 52492 1,4-Dichlorobenzene-d4 9.71 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 3-Methyl-2,3-epoxybutanal 100 C5H802 000000-00-0 39 2 Formic acid, 2-methylpropyl este... 102 C5H10O2 000542-55-2 22 3 Formic acid, 1-methylpropyl este... 102 C5H10O2 000589-40-2 10 4 Formic acid, 2-methylpropyl este... 102 C5H10O2 000542-55-2 10 Abundance Scan 76 (4.241 min): 31676.D (-) m/z 85.00 100.00% 85 41

5000 60 A ■ ■ i ■ • 3.80 4.00 4.20 4.40 4.60 0 • 49 - = i... ।.... ।... < ।.... ।.... ।. m/ Z 41.10 67.25% ‘' l “ ' ■ l ' “ ‘ I " ■ i ■■' 1111 mfa-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100105110 Abundance #7969:3-Methyl-2,3-epoxybutanal 41 85

5030 60 /’**I**’’1*’’1*’11*** 3.80 4.00 4.20 4.40 4.60 .. N m/z 43.10 54.00% , 100 01 ■ • I • “ ■ i ■ • ■ ■ i • ■ “ i< >i • i ■"11 ■" ■ i" • ' •11' ■'11 ■ ■1 ■ i ■ ■'' i ■' ‘ ■ t'11! ■ ■ | ‘Ir.'■l'.■ ■ I'' “ I' miz-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105110 Abundance #9310: Formic acid, 2-methylpropyl ester (CAS) $$ Isobutyl... 29 43 56 _AAA__ 3.80 4.00 4.20 4.40 4.60 5000 m/z 39.10 27.09%

51 0: “I' ‘ “ I' THIur 4 I|l.|I.... I I.... I .... I. H . |> 'I'"11‘" ‘I niz-> 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100105110 Abundance #9299: Formic acid, 1 -methylpropyl ester (CAS) $$ sec-Buty... i ■ 1 ■ 1 I ■ ' • ■ | • ' » • | > I ■ > 43 56 3.80 4.00 4.20 4.40 4.60 m/ z 60.00 27.06% 31 5000

m/z—> 0 ■■i‘ "i■ TTHTDTT t+ttttt 4l. 102 । । 11 । i i । < i t 5 ] k'•<• । । । । । । ■ । । । । ■ > । i । < 11 ■ j i i ■ । । । 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100105110 3.80 4.00 4.20 4.40 4.60

31676.D SCAN508.M Thu Jan 24 09:57:33 2002 Page 4

NYC-WTC_000050324

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GCMS analysis results for sample AD31674, Jan 25 2002 · Box DEP Box 28

NYC-WTC_000050276

Laboratory report documenting GCMS analysis of sample AD31674 with detection of unknown compounds and surrogate recovery.

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