GCMS blank analysis results, Dec 2001

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Laboratory report documenting gas chromatography-mass spectrometry blank analysis conducted on December 27, 2001.

NYC-WTC_000017663–000017674

Folder label: “GCMS X 12/13/01 A 12/27/01”

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Library Search Compound Report

Data File : C:\HPCHEM\l\DATA\DEC2701\LBA.D Vial: 4 Acq On : 27 Dec 2001 1:06 pm Operator: 209 GALOS Sample : GC/MS SCAN 12/13 Inst : GC/MS 209 Mise Multiplr: 1.00 MS Integration Params: LSCINT.P

Quant Method : C:\HPCHEM\1\METHODS\GCMS1126.M (RTE Integrator) Title : 209 625/TCLP calibration table Library : C:\DATABASE\NBS75K.L ********************************************************************* Peak Number 2 Acetic acid, 1,1-dimethylethyl Concentration Rank 4

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

7.76 0.52 ug/1 146717 1,4-Dichlorobenzene-d4 11.68

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Acetic acid, 1,1-dimethylethyl este 116 C6H1202 000540-88-5 38 2 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 33 3 Formamide, N-formyl-N-methyl- 87 C3H5NO2 018197-25-6 9 4 1,3-Dioxolane-2-methanol, 2,4-dimet 132 C6H1203 053951-43-2 9 Abundance Scan 296 (7.758 min): LBA.D (-) m/z 42.95 100.00% 43

5000 59

w_ 101 ' ■ i ‘ •i • ' ■ ■ i 1 i ' ' • ■ i ■ 7.40 7.60 7.80 8.00 8.20

miz-> . .......... 1.87 11153 | 10 20 30 40 50 i60 70 80 ......... h1....... , 90 100 110 m/ z 58.95 42.20% Abundance #3292: Acetic acid, 1.1-dimethylethyl ester 43

5000 57 ■■ -PAA+ 7.40 7.60 7.80 8.00 8.20 101 m/z 101.q 21.03% 15 27 I m/z-> 1 ■ i • ■ ‘ 1 i ' 1 1 1 i 1 ' TTT *Tuuut 60 1 i’' • * * । ' * » ■ । 70 80 • i • * 1 90 । ' * * ■ । 100 110 10 20 30 40 50 Abundance #3245: 2-Pentanone, 4-hydroxy-4-methyl- 43 ' 7.40 7.60 7.80 MPr 8.00 8.20 5000 59 m/ z 5 11.90%

31 101 73 83 ' ‘ I ‘ ‘ ' I ‘ ‘ ‘ ■ I ' ' ' ‘ I ‘ ‘ I ‘ ‘ r' I ‘ ‘ ‘ I ' ‘ ‘ ' I ‘ ‘ ' I ‘ ‘ ' 1 1 ' ‘ ‘ ‘ I miz-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #742: Formamide, N-formyl-N-methyl- 30 59 7.40 7.60 7.80 8.00 8.20 m/z 4 .05 8.86% 5000 42

— 87 » • i ■ > • * i • • I ' ■ ' ' i 1 ‘ ' i ' ' ' ‘ i ' ■ • ' i ' ‘ ' ■ i . , । i i i T| । । i i । । i T i |-1 r r i |' r m/z-> 10 20 30 40 50 60 70 80 90 100 110 7.40 7.60 7.80 8.00 8.20

LBA.D GCMS1126.M Wed Jan 02 11:10:19 2002 Page 2

NYC-WTC_000017670

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