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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

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 17 Cyclononasiloxane, octadeca... Concentration Rank 6 R.T. EstConc Area Relative to ISTD R.T. 39.34 0.99 ug/L 637888 Perylene-dl2 34.70 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Cyclononasiloxane, octadecamethyl- 666 C18H54O9Si9 000556-71-8 59 2 1,1,1,5,7,7,7-Heptamethyl-3,3-bi... 444 C13H40O5Si6 038147-00-1 25 3 Mercaptoacetic acid, bis(trimeth... 236 C8H20O2SSi2 006398-62-5 23 4 2,6-Dimethyl-3,4-bis(trimethylsi ... 311 C15H29NO2Si2 1000079-52-1 12 Abundance Scan 6172 (39.343 min): 0508LB.D (-6156) (-) m/z 147.10 100.00% 73 147 221

5000 355 281 . A4-A I 429 40 503 39.00 39.20 39.40 39.60 0- apopogum . .......... — - _______ 1____________________ ' I ' 1 ' ' I 1 ' ' 111 I I I I I I I I [ I I m/ z 73.10 99.48% n/z-> 0 50 100 150 200 250 300 350 400 450 500 550 600 650 Abundance #115158: Cyclononasiloxane, octadecamethyl- 73 147 221 429

355 5000 281 39.00 39.20 39.40 39.60 m/z 221.00 76.34% 475

n/z-> 0- 0 —4 i ■ ■ ' ■ i ' • ' ■ i ■ ■ 50 100 150 200 250 300 350 400 IIi 450 500 550 600 650 651

Abundance #26950:1,1,1,5,7,7,7-Heptamethyl-3,3-bis(trimethylsiloxy)... 73 147 39.00 39.20 39.40 39.60 5000 267 m/z 355.00 48.81%| 355 429 207

_ 0 I . ........ 1471 1 ’ ’1 ’ I ... I ’+1’ +*4I141 ................. _ +*+I1+-1+1’’ I’’ ■ l ■ • ■ - । ‘ । i TT’ । । । । । । । । । । niz-> 0 50 100 150 200 250 300 350 400 450 500 550 600 650 Abundance #26922: Mercaptoacetic acid, bis(trimethylsilyl)- 1 ' I 1 1 1 ' 1 1 73 39.00 39.20 39.40 39.60 147 m/z 207.00 41.21% 5000

221 nw/lutulnopo m/z-> 0 +13.14. '■ 1/ r 147— 0 50 104 100 150 200 250 300 350 400 450 500 550 600 650 ' 1 i 1 ■ ‘ 1 1 ' ' ■ ' 1 1 ' 1 ' i ' 39.00 39.20 39.40 39.60

0508LB.D 050102.M Tue May 14 10:15:02 2002 Page 20

NYC-WTC_000022988

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NYC-WTC_000022988Source: NYC Law Department, mirrored locally

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