GCMS analysis results sample AE12157, June 2002

Machine-extracted title · confidence 90%

Gas chromatography-mass spectrometry analysis of sample AE12157 performed on 6/7/02, detecting unknown compounds and 2,4-DDD surrogate at 83% recovery.

NYC-WTC_000013378–000013386

Folder label: “GCMS X 5/22/02 A 5/25/02”

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NYC 9/11 Public Portal Document Library Search Compound Report Data File : C: \HPCHEM\ 1 \DATA\MAY240212157.D Vial: 11 Acq On : 25 May 2002 1:24 am Operator: Morgan Sample : gc/ms scan 5/22 Inst : 209 Mise Multiplr: 1.00 MS Integration Params: LSCINT.P >».* Quant Method : C:\HPCHEM\1\METHODS\GCMS0520.M (RTE Integrator) ... Title : 20’9 625/TCLP calibration table Library : C:\DATABASE\NBS75K.L ********************************************************************* Peak Number 1 2-Pentanone, 4-hydroxy-4-methy Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T. 8.12 10.72 ug/1 791352 1,4-Dichlorobenzene-d4 12.14 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 74 2 Acetic acid, l,1-dimethylethyl este 116 C6H12O2 000540-88-5 25 3 Acetone 58 C3H60 000067-64-1 16 4 5-Hexen-2-one 98 C6H10O 000109-49-9 9 Abundance” Scan 335 (8.118 min): 12157.D (-) m/z 43.00 100.00% 43

5000 59

101 • • > l • > • • l • r > • l • 44 * ] ‘ i 'i । | 7.80 8.00 8.20 8.40 mfz~> -I* ■ । । । । 11 ■ ■ 1tg" 10 20 30 3? i. 40 +53+ 50 — 60 69 70 80 83 90 1. 100 110 m/z 59.00 45.86% Abundance #64274:2-Pentanone, 4-hydroxy-4-methyl- 4

5000 IIIIf 1l I 4 * • ‘ i 59 7.80 8.00 8.20 8.40 m/ z 58.00 21.37% 27 101 ... II i .. । +49+ ■ ■ ' ■ i ■ ■ ■ ■ i ■ ■ ■ ■ i 1 83 । I • • > • i ' < < • । >■• ■ ■ । > • > • । » . . . । » mlz-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #3292: Acetic acid, 1,1-dimethylethyl ester 43 1 ■ ■ i ■ ■ ' ■ i • f 1 ■ i ■ ■ i 1 ■ • ■ i 7.80 8.00 8.20 8.40 5000 57 m/z 101.05 16.67% 101 15 27 I t 1 1 i ■ ■ ■ 1 1 1 ' ' ' 1 1 1 1 1 r1 11 i ■ ■ ■ ■ । ■ i ■ ' • ■ i ‘ ■ i‘ 1 ■ ■ i ‘ miz-> 10 20 30 40 ' * so'' 60 70 80 90 100 110 Abundance #62326: Acetone 1 ■ ■ i ■ • ■ ' i • ■ ■ ■ i ■ ■ ■ • i ' 1 • ■ i 43 7.80 8.00 8.20 8.40 m/z 41.0.0 6.64% 5000 58

m/z—> . 10 20 730 36,40 r'' 50 ‘i‘‘■

60 i•••• । 1 1 ' ‘ i 1 • ■ ■ i • ■ • ■ । ‘

70 80 90 100 110 1 ■ ■ i1 7.80 8.00 ■ i 1*7711" i ■ । 8.20 8.40

12157.D GCMS0520.M Tue May 28 12:04:52 2002 Page 1

NYC-WTC_000013385

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NYC-WTC_000013405

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