GCMS unknowns analysis results for sample AD27951, Jan 2002

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Laboratory report documenting GCMS analysis for unknown compounds and surrogate recovery in sample AD27951 conducted on January 2, 2002.

NYC-WTC_000034059–000034072

Folder label: “GCMS X 11/20/01 A 12/20/01”

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NYC 9/11 Public Portal Document Library Search Compound Report

Data File : C:\HPCHEM\l\DATA\DEC1901\27951 .D Vial: 7 Acq On : 20 Dec 2001 9:37 pm Operator: GALOS Sample : gems unknown 11/20 Inst : GC/MS Ins Mise Multiplr: 1.00 MS Integration Params: LSCINT.P

Quant Method : C:\HPCHEM\1\METHODS\NP112701.M (RTE Integrator) Title : 208 625/TCLP calibration table Library : C:\DATABASE\NBS75K.L ********************************************************************* Peak Number 5 2-Pentanone, 4-hydroxy-4-methy Concentration Rank 1

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

7.84 2.85 ng/uL 1003130 1,4-Dichlorobenzene-d4 11.87

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2-Pentanone,/4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 59 2 2-Pentanones 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 53 3 Acetic acid, 1,1-dimethylethyl este 116 C6H12O2 000540-88-5 28 4 Acetic acid, cyano-, 1,1-dimethylet 141 C7H11N02 001116-98-9 23 Abundance * Scan 327 (7.841 min): 27951 .D (-) m/z 43.10 100.00%| i 43 59 5000

101 ' i ' ■ • ' p ' 1 7.40 7.60 7.80 8.00 8.20 ........................ 38 +53+ I ' ■ i ■ ■ ' ■ i ■ ' ■ ■ i ■ ■ ' 1 I 1 83 , I m/z 59.10 51.05 m/z-? 10 20 30 40 50 60 70 80 90 100 110 Abundance #64274: 2-Pentanone, 4-hydroxy-4-methyl- 43 i 5000 59 7.40 7.60 ' ' 7.80 8.00 ' ' 8.20 ' 27 m/z 101.05 17.94 I I________ , +48+ I 8.3 101 1 1 i 1 1 • 1 i 1 1 ' ’ i ■ 1 ■ ■ i ■ IB3T —f—TT miz-x 10 20 30 40 50 60 70 80 90 100 110 Abundance #64275; 2-Pentanone, 4-hydroxy-4-methyl- 43 1 i ■ i > • • ■ । ■ 7.40 7.60 7.80 8.00 8.20 5000 m/z 58.1.0 15.40 59 1 15 31 101 H 83 ■ ■ i ■ ■ ■ ■ i ■ ■ ■ • i ■ 1 ■ ■ i ■ 1 1 1 I ' 1 1 i ' ■ ' ■ 1 1 ■ ■ ■ i ' ■ ----- m/z—> 10 20 30 40 50 60 70 80 90 100 110 Abundance #3292: Acetic acid, 1,1-dimethylethyl ester 43 7.40 7.60 7.80 8.00 8.20 m/z 41.10 7.75 5000 57

101 15 27 11i■1■1 r11111 11 ' ' 1 1 1 1 1”' 1 ‘ i ■ ‘ ■ j ■ ■ 1 ■ i > ■ ■ < i • ■' । MfPP91PITTfr 1 .................... m/z-> 10 20 30 40 50 60 70 80 90 100 110 7.40 7.60 7.80 8.00 8.20

27951.D NP112701.M Fri Dec 21 09:58:36 2001 Page 5

NYC-WTC_000034071

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NYC-WTC_000034018

Laboratory report documenting GCMS analysis for unknown compounds and surrogate recovery in sample AD27872 conducted on January 2, 2002.

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