GCMS blank analysis results, sample AE10809, May 2002

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Gas chromatography-mass spectrometry blank analysis conducted May 17, 2002 testing for semivolatile organic compounds with all results below method reporting limits.

NYC-WTC_000045936–000045963

Folder label: “GCMS X 5/7/02 A 5/15/02”

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NYC 9/11 Public Portal Document

Data File : C : \MSDCHEM\ 1 \DATA\ 0 514 0 2 \ 0 5 0 7LB . D Vial: 16 Acq On : 15 May 2002 2:34 am Operator: Mclean Sample : 5/7 kb Inst Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\l\METHQDS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L ********************************************************************* Peak Number 14 Butanoic acid, 3-[(trimethy... Concentration Rank 12

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

33.23 0.74 ug/L 335227 Perylene-dl2 34.70 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Butanoic acid, 3- (trimethylsily... 248 C10H24O3S12 055133-94-3 12 2 Butanoic acid, 3- (trimethylsily... 248 C10H24O3Si2 055133-94-3 10 3 4-Pentynamide, 2-acetyl-N-(2-met... 283 C17H17NO3 055760-06-09 4 1,6-Bis(pentamethyldisilyloxy)he ... 378 C16H4202Si4 1000216-9945 9 Abundance Scan 5132 (33.233 min): 0507LB.D (-5129) (-) m/z 147.00 100.00% 147 73

5000 281 191 355 429

44 . 223 32.80 33.00 33.20 33.40 33.60 0 I 1 1 _ 1 ___________ _ m/z 73.10 63.98% TT r i 1 1—1 I i ‘ m/z-> 50 100 150 200 250 300 350 400 Abundance #65880: Butanoic acid, 3-[(trimethylsilyl)oxy]-, trimethyl... 147 73 117 _____ A/________________ NAMM AAKAA 5000 | I I ' I T I dr I' I 1 1 | T I I > | I f T

191 32.80 33.00 33.20 33.40 33.60 233 m/z 281.05 43.31%

A 45

m/z-> 0 —l ?3,, L —1 1....... , 50 100 150 200 250 300 350 400 Abundance #123290: Butanoic acid, 3-[(trimethylsilyl)oxy]-, trimethy... 147 73 32.80 33.00 33.20 33.40 33.60 117 m/z 283.00 43.01% 5000 191 45 233

01 I 20 A 41 93 , l| 1.,h 1 1 ' '' 11 1 I I I I I I I I I I |...................... 1 1 i 1 ' ' 1 ki 1 1 1 i ’ 1 ■ a ' m/z-> 50 100 150 200 250 300 350 400 Abundance #9973: 4-Pentynamide, 2-acetyl-N-(2-methoxyphenyl)-2-(2-pr... 1 1 i ■ ' ■ ■ i ' ■ 43 32.80 33.00 33.20 33.40 33.60 m/z 429.00 33.59%

5000 283 123 149 65_ 95 240 202 0 1541 444 —470,7.,., 1 12611 TT /z-> 50 100 150 200 250 300 350 400 32.80 33.00 33.20 33.40 33.60

0507LB.D 050102.M Thu May 16 12:36:00 2002 Page 17

NYC-WTC_000045956

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