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GCMS analysis results for sample AE10305, May 2002

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Laboratory report documenting gas chromatography-mass spectrometry analysis of environmental sample AE10305 conducted on May 17, 2002.

NYC-WTC_000045113–000045136

Folder label: “GCMS X 5/1/02 A 5/8/02

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NYC 9/11 Public Portal Document

Library Search Compound Report Data File C:\MSDCHEM\l\DATA\050802\10305R.D Vial: 26 Acq On 9 May 2002 12:56 pm Operator: Mclean Sample re-inj Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e

Quant Method : C:\MSDCHEM\1\METHODS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L Peak Number 3 Ethanethioic acid Concentration Rank 7 R.T. EstConc Area Relative to ISTD R.T. 3.75 0.43 ug/L 346166 1,4-Dichlorobenzene-d4 9.94 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Ethanethioic acid 76 C2H40S 000507-09-5 9/ 2 2-Propanone, 1,1-dichloro- 126 C3H4C120 000513-88-2 8 3 2-Chloroethanol 80 C2H5C10 000107-07-3 9 4 Ethyl Chloride 64 C2H5C1 000075-09-3 7 Abundance Scan 114 (3.749 min): 10305R.D (-105) (-) m/z 43.10 100.00% 43

5000

35 51 63 75 85 3.40 3.60 3.80 4.00 4.20 0--PPP--+4+ + 11 1 11' I I I — 1114 ! ] I I I I 4 I |—I—I—I—I—| I I > I | - T-p-T m/ z 85.00 6.67% m/z-> 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #5942: Ethanethioic acid 43

5000 3_ MA——_1_ 1_1_1_ PA--IAT 3.40 3.60 3.80 4.00 4.20 m/ z 63.00 5.63% 33 61 76 m/z-> O—TT 20 30 U40I 1r 50 ■ । - ■ ■■> i > ■ ■ ■ । 60 70 80 ■ i ■ i ■ ■ । । r। > i i r 90 100 ' I ' ■ ■ ■ 1 1 ■ - 1 1 1 r 110 120 130 Abundance #109152: 2-Propanone, 1,1-dichloro- 43

3.40 3.60 3.80 4.00 4.20 5000 m/z 42.10 5.52%

m/z-> । 3o27 20 49 55 63 0-TIPTTf 1huATLDTLTUEuTTITT 20 30 40 50 60 70 76 83 91 80 90 111 126 100 110 120 130 Whjudk Abundance #108328: 2-Chloroethanol 1 ' i ■ 1 1 1 i 1 1 ' ' r1 31 3.40 3.60 3.80 4.00 4.20 m/z 35.10 5.45%

5000 44

n/z-> 0 20 30 40 50 60 80 1 i ■ ■ ■ 'T‘ 0IIIIIII*II 70 80 90 100 110 120 130 Ahapuntaur 3.40 3.60 3.80 4.00 4.20

10305R.D 050102.M Thu May 09 13:51:04 2002 Page 6

NYC-WTC_000045123

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NYC-WTC_000045123Source: NYC Law Department, mirrored locally

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