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← Document results/DEP Box 25/GCMS X 4/25/02 A 5/7/02
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GCMS analysis results, sample AE09970, May 2002

Machine-extracted title · confidence 100%

Laboratory report for sample AE09970 showing surrogate recovery and unknown compounds from May 9, 2002.

NYC-WTC_000043976–000044000

Folder label: “GCMS X 4/25/02 A 5/7/02”

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Scanned page image, NYC-WTC_000043988
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NYC 9/11 Public Portal Document

Library Search Compound Report

Data File C:\MSDCHEM\1\DATA\050602\9970.D Vial: 27 Acq On 7 May 2002 8:52 am Operator: Mclean Sample 4/25 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 4 Methanethiol Concentration Rank 6

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

3.88 0.34 ug/L 234164 1,4-Dichlorobenzene-d4 9.94

Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 Methanethiol 48 CH4S 000074-93-1 7 2 Methanethiol 48 CH4S 000074-93-1 ” 3 Methanethiol 48 CH4S 000074-93-1 /5 4 O-Methyl-hydroxylamine 47 CH5NO 1000192-4-9- -3 Abundance Scan 136 (3.878 min): 9970.D (-131) (-) m/z 40.10 200.00% 43

47 5000 84 58 35 88 3.60 3.80 4.00 4.20 — 44 ..an,). m/z 47.05 51.56% 1111‘1111111111"T7TTTTOTT III’ — 1 r 1 ■11111' i11 " i ‘I‘ m/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #12281: Methanethiol 47 WWWWVMHMAw/a 5000 3.60 3.80 4.00 4.20 m/z 84.00 37.50% 33 44 , .,14 1 . 24 11,36.... I F A NPWMMM-Apuoon m/z-> l-rrp-T-rTp+H-p-rTTp-rrTp-i-rrp- 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 i " " r1 " r Mawly Abundance #111010: Methanethiol 47 ' ■ ■ 1 i 1 ■ ■ ' r■ ‘11’ !’’’ 3.60 3.80 4.00 4.20 5000 m/z 48.10 35.94%

15 +12+ 33 461 R 24 r 11 ■ i | । I I I | । > i i | i i । I r i1111 r ■ " [ " '' i11111" '' i1'111 " '111'111 m/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #111011: Methanethiol 47 3.60 3.80 4.00 4.20 m/z 58.10 21.88%

5000 MMMMaMAHhWM#MMAh 26 33 4 /z-> I I I I I I I I I I I I I > I I I I I I I I I I I 1 I I I I I I I I I I t I I I I I

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 R I " 11111 " i (+01 I >> I I I I I I I I 1 1 I I I I I ' I I I ' ' 1 1 1 1 1 ‘ I 1 1 1 ' I ■ ' 1 1 1 1 3.60 3.80 4.00 4.20

9970.D 050102.M Tue May 07 15:49:41 2002 Page 8

NYC-WTC_000043988

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NYC-WTC_000043988Source: NYC Law Department, mirrored locally

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GCMS analysis results, sample AE09968, May 2002 · Box DEP Box 25

NYC-WTC_000043938

Gas chromatography-mass spectrometry analysis report for sample AE09968, detecting unknown compounds and 2,4-DDD surrogate with 78% recovery, dated May 9, 2002.

1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.997

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