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GCMS blank analysis results for May 2002

Machine-extracted title · confidence 100%

Laboratory report of a GCMS blank run conducted on May 14, 2002, showing non-detect results for various compounds.

NYC-WTC_000022965–000022989

Folder label: “GCMS X 5/8/02 A 5/9/02

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NYC 9/11 Public Portal Document DCCL LI WUIpUULL AEUU

Data File C:\MSDCHEM\1\DATA\050902\0508LB.D Vial: 4 Acq On 9 May 2002 5:43 pm Operator: Mclean Sample 5/8 kb 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 5 2-Pentanone, 4-hydroxy-4-me... Concentration Rank 1

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

5.97 14.68 ug/L 11744100 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 83 2 2 -Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 83 3 2-Pentanone, 4-hydroxy-4 -methyl- 116 C6H12O2 000123-42-2 78 4 Acetic acid, 1,1-dimethylethyl e... 116 C6H1202 000540-88-5 53 Abundance Scan 492 (5.970 min): 0508LB.D (-485) (-) m/z 43.10 100.00% 43

5000 59 101 5 60 5.80 6.00 6.20 6.40 ............................... .. 53 69 83 | Of 1 1 I 1 1 1 ' i ' ' ' 1 i ■ ' 1 1 f ' —+ 1 f 1 ' ■ ■ i ■ 1 ■ ' i 1 1 ■ ■ i ' 1 ■ ' i ‘ ' i ' m/z 59.10 31.05% m/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #109755: 2-Pentanone, 4-hydroxy-4-methyl- 43

...... .............. 5000 59 560 5.80 6.00 6.20 6.40 m/z 58.10 23.25% 15 101

mfz-> Ot 11 i 1 1 1 i ' 10 20 29,3130 .39,140 + 50 60 53 , 70 80 83 90 100 | 110 Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- 43 560 5.80 6.00 6.20 6.40 5000 m/z 101.10 11.41% 59 101

n/z-> 01 .......... 10 20 77,32 30 39,140 +48,534 50 60 67 72 77 83 70 80 91 96, | 90 100 110 I ■ ‘ ■ 1 i ' ■ ■ ■ i ' ' ' ■ i ■ 1 ' 1 i ' ' 1 ' 1 1

Abundance #109756: 2-Pentanone, 4-hydroxy-4-methyl- 43 5.60 5.80 6.00 6.20 6.40 m/z 41.10 5.49% 5000 59

.................. 93 9, — 93 101| 0 1 1 I 1 1 1 1 I 1 ' । । | । ' 1 i । । ' i ■ -'i I ' ' ■ 1 i ■ ' 1 ■ i ' ■ • ■ i ' ■ ' ' i 1 1 ■ ' i ' rTll r‘ 1711/0201 ITTrrr 1 I | T n/z-> 10 20 30 40 50 60 70 80 90 100 110 5.60 5.80 6.00 6.20 6.40

0508LB.D 050102 .M Tue May 14 10:14:50 2002 Page 8

NYC-WTC_000022976

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NYC-WTC_000022976Source: NYC Law Department, mirrored locally

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