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\051402\0507LB.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\1\METHODS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L ********************************************************************* Peak Number 12 3,6-Dioxa-2,4,5,7-tetrasila. . . Concentration Rank 5

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

33.10 2.67 ug/L 1218230 Perylene-dl2 34.70

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 3,6-Dioxa-2,4,5,7-tetrasilaoctan... 294 C10H3002Si4 004342-25-0 37 2 Trisiloxane, 1,1,1,5,5,5-hexamet... 384 C12H3604Si5 003555-47-3 2 3 Trisiloxane, 1,1,1,5,5,5-hexamet... 384 C12H3604Si5 003555-47-3/ 6 4 Tris(trimethylsilyl)borate 278 C9H27BO3Si3 004325-8573 14 Abundance Scan 5110 (33.103 min): 0507LB.D (-5077) (-) ' m/z 73.10 100.00% 73 147 221

5000 281 355 429 — rtf.... . A 49 191 32.80 33.00 33.20 33.40

m/z-> 01 t I- 50 1 I ' 100 150 200 250 300 ’1 350 L 1 —i 1 1 1 400 m/z 147.10 79.17% Abundance #87890: 3,6-Dioxa-2,4,5,7-tetrasilaoctane, 2,2,4,4,5,5,7,7... 147 221

73 5000 32.80 33.00 33.20 33.40 191 m/z 221.10 78.02% 117

A — 279 45 M L, 249 ( 0- TT 1 i ■ T ■ I Lr 1 1 1 1 ' ■ i ' m/z-> 50 100 150 200 250300 350 400 Abundance #26961: Trisiloxane, 1,1,1,5,5,5-hexamethyl-3,3-bis[(trime... 1 I I I I I /1 _ I I h 73 147 1 ' I ' 1 ' ' I 281 32.80 33.00 33.20 33.40 5000 m/z 206.95 53.15%

369 45 207226 249 dr। 177 — MW vwwA 95 117 310 341 | J -- m/z-> 0-

Abundance ■ I 1 50 TI 100 150_____ 200 250 1 1 300 #115144: Trisiloxane, 1,1,1,5,5,5-hexamethyl-3,3-bis[(trim... l 1 —1 1 ’ 1 1 T 350 400 " 1 ■ । ■ > ■ ■ । ■ ■ ■ ■ । ■ r ■ 1 ■ । । 73 32.80 33.00 33.20 33.40 147 m/z 281.10. / 42.59% 5000 281 45 369 0 1, II* 117 ' I P T I r t —1 207 249 i . —7 AANC—— MMAMMk 50 100 150 200 250 300 350 400 32.80 33.00 33.20 33.40

0507LB.D 050102.M Thu May 16 12:35:59 2002 Page 15

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