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GCMS blank analysis results, sample AE11799, May 2002

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Gas chromatography-mass spectrometry blank analysis for sample AE11799 showing results below method reporting limits for semivolatile organic compounds, dated May 28, 2002.

NYC-WTC_000012751–000012778

Folder label: “GCMS X 5-21-02 A 5-22-02

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NYC 9/11 Public Portal Document Library Search Compound Report

Data File : C: \MSDCHEM\ 1 \DATA\ 052202\521LB.D Vial: 3 Acq On : 22 May 2002 3:27 pm Operator: Mclean Sample : 5/21 ad Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\052202.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L ********************************************* * * ******************** * * Peak Number 17 Heptasiloxane, 1,1,3,3,5,5,... Concentration Rank 12

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

35.38 0.57 ug/L 227136 Perylene-d12 34.66

Hit# Of 5 Tentative ID MW MolForm CAS# Qual 1 Heptasiloxane, 1,1,3,3,5,5,7,7,9... 504 C14H4406Si7 019095-23-9 38 2 3,6-Dioxa-2,4,5,7-tetrasilaoctan... 294 C10H3002Si4 004342-25-0 35 3 2,6-Dimethyl-3,4-bis(trimethylsi ... 311 C15H29NO2Si2 1000079-52-1 35 4 Mercaptoacetic acid, bis(trimeth... 236 C8H20O2SSi2 006398-62-5 35 Abundance Scan 5497 (35.377 min): 521 LB.D (-5485) (-) m/ z 73.10 100.00% 73 A 147 221 «, M 5000 355 281 429 . ।M woo 3500 35.20 35.40 35.60 35.80 96

miz-> 0- 0 ■ ‘ 40 1 i 1 50 I 100 1 150 200 250 1, 300 1,....J...... I.... — 350 400 450 m/z 147.10 64.93% Abundance #27374: Heptasiloxane, 1,1,3,3,5,5,7,7,9,9,11,11,13,13-tet... 73

A 5000 207 ‘dt ‘ ■ i ■ ■ ‘ ■ i ■ 3500 35.20 35.40 35.60 35.80 m/z 221.10 64.50% 133 281 355 0- —50L — 103 111771 150 +231 200 250 13274377399 300 350 400 429450 489 I"'' ■ IT nz-> 0 100 Abundance #87890:3,6-Dioxa-2,4,5,7-tetrasilaoctane, 2,2,4,4,5,5,7,7... 147 221

73 35.00 35.20 35.40 35.60 35.80 5000 m/z 355.10 40.56% 191

iz-> 0- 0 45 1 '' 1 1 r 50 100 L 117

150 - . 1,242509.4.. 200 300 279

350 ■ 400 ■ i ■ ■ ■ ■ 450 i - ' ■ i ■ ■ ■ ■ i

Abundance #87845:2,6-Dimethyl-3,4-bis(trimethylsilyloxymethyl)pyridine 73 221 35.00 35.20 35.40 35.60 35.80 m/z 207.00 37.03%

5000 147

178 45 15 0- ।-I -i rrthr ....... 427120,1 ,, —— 266.296. ......... ............... n/z—> 0 50 100 150 200 250 300 350 400 450 35.00 35.20 35.40 35.60 35.80

521LB.D 052202.M Tue May 28 11:58:10 2002 Page 20

NYC-WTC_000012774

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