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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 AE09972, May 2002

Machine-extracted title · confidence 100%

Laboratory report for sample AE09972 showing surrogate recovery and unknown compounds from May 9, 2002.

NYC-WTC_000044001–000044024

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

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Data File C:\MSDCHEM\1\DATA\050602\9972.D Vial: 20 Acq On 7 May 2002 3:11 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 9 2-Pentanone, 4-hydroxy-4-me... Concentration Rank 1 R.T. EstConc Area Relative to ISTD R.T. 5.97 10.34 ug/L 8396060 1,4-Dichlorobenzene-d4 9.94 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 78 2 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 72 3 2-Pentanone, 4 -hydroxy-4 -methyl- 116 C6H1202 000123-42-2 4 Acetic acid, 1,1-dimethylethyl e... 116 C6H1202 000540-88-5/ 36 Abundance Scan 492 (5.970 min): 9972.D (-484) (-) m/ z 43.10 100/ 00% 43

5000 59 _ I I | ■ f I l y I I I [ I I T '1 | ' I 101 560 5.80 6.00 6.20 6.40 ' 1 1 । 1 1 ■ 1 । 1 —374 +53+ 69 83 | 125 I 1 1 1 1 i 1 1 1 ' i ' 1 1 1 i 1 1 1 1 i 1 1 1 ■ i 1 r ' 1 i 1 ' 1 1 i 1 ■ m/z 59.10 35.75% m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #109755: 2-Pentanone, 4-hydroxy-4-methyl- 43

5000 ■ | ■ 1 ' 1 | T । T—| I > | I ! ! | । , 59 560 5.80 6.00 6.20 6.40 m/z 58.05 22.66% 15 31 101 1251371 —53, + 83 l I ■ ■ • • । • ■ ■ • । ‘ , | ■ i ■ ■ > I । । । - ■ ■ ■ । 1 ■ ■ ■ । ■ /z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #109756: 2-Pentanone, 4-hydroxy-4-methyl- 43 ' i 1 ' 1 ' i 1 ' 1 1 i ■ 1 1 1 i 4 1 1 1 1 5.60 5.80 6.00 6.20 6.40 5000 59 m/z 101.10 14.27%

25,31 37 14 T p ■ । । । i । । । । r 83 — 63 93 1011 ' I ' ' 1 1 I 1 ■ ■ ■ I 1 ■ ■ • I ■ • 1 I I 1 ' 1 I I ' I I I I I I 1 I I I 1 1 i ■ 1 m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 i । । > । । । y 1 । । । > >—।—■ । । Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- ‘I‘* 43 5.60 5.80 6.00 6.20 6.40 m/z 41.20 6.12% 5000 59 101 .... 27, 37 Til I I I I I I I I r I I I I I r I I- 67 77 83 91 53 - 07 । । । । 1 । । । 'i i’"i । 'i "TT 'I p ।1 m/z--> 10 20 30 40 50 60 70 80 90 100 110 120 130 5.60 5.80 6.00 6.20 6.40

9972 .D 050102.M Tue May 07 15:50:59 2002 Page 13

NYC-WTC_000044018

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NYC-WTC_000044018Source: 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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