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GC/MS blank analysis results for nitrosamines, sample AE10895, May 20

Machine-extracted title · confidence 100%

Laboratory report showing non-detectable levels of nitrosamines and other contaminants in blank sample AE10895.

NYC-WTC_000024041–000024057

Folder label: “GCMS X 5/10/02 A 5/16/02

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Scanned page image, NYC-WTC_000024055
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NYC 9/11 Public Portal Document ULJLCLY DCaL’ii wpOuIIU IDOL L

Data File : C:\MSDCHEM\l\DATA\051602\510LB.D Vial: 3 Acq On : 16 May 2002 4:10 pm Operator: Mclean Sample : 5/10 eh 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 8 1,1,1,5,7,7,7-Heptamethyl-3... Concentration Rank 2

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

36.43 2.86 ug/L 1569420 Perylene-dl2 34.70 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 1,1,1,5,7,7,7-Heptamethyl-3,3-bi... 444 C13H40O5Si6 038147-00-145 2 3,6-Dioxa-2,4,5,7-tetrasilaoctan... 294 C10H3002Si4 004342-25-6 27 3 2,6-Dimethyl-3,4-bis(trimethylsi... 311 C15H29NO2Si2 1000079-52-1 22 4 Trisiloxane, 1,1,1,5,5,5-hexamet... 384 C12H3604Si5 003555-47-3 16 Abundance Scan 5676 (36.429 min): 510LB.D (-5654) (-) m/z 221.10 >00.00% 73 221 147

5000 281 355

A 429

n/z-> 0 44 I- 50 96 ,I 100 I II 150 191 , | 200 300 250 350 I...)) —L 400 36.00 36.20 36.40 36.60 36.80 m/z 73.05 83.30% Abundance #26950:1,1,1,5,7,7,7-Heptamethyl-3,3-bis(trimethylsiloxy)... 73

147 5000 267 355 429 36.00 36.20 36.40 36.60 36.80 207 45 m/z 147.10 79.60% 0- I- I , 1 - m/z-> 50 100 150 200 250 300 350 400 Abundance #87890: 3,6-Dioxa-2,4,5,7-tetrasilaoctane, 2,2,4,4,5,5,7,7 - 147 221

73 36.00 36.20 36.40 36.60 36.80

A 5000 m/z 281.00 44.34% 191 117

m/z-> 0- 45 ■ 1 i ■> ' 50 100 , .1 , 150 250 1 L, 200 300 279 249 ,....................................... 350 400 Abundance #87845:2,6-Dimethyl-3,4-bis(trimethylsilyloxymethyl)pyridine Z!1 36.00 36.20 36.40 36.60 36.80 73 m/z 207.00 38.55% / 5000 147

178 45 15 . J. .. 93 120 . 0 TtBE/n/dd/TmTT , 1266 296 ................. n/z-> 50 100 150 200 250 300 350 400 36.00 36.20 36.40 36.60 36.80

510LB.D 050102.M Fri May 17 15:08:54 2002 Page 11

NYC-WTC_000024055

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NYC-WTC_000024055Source: NYC Law Department, mirrored locally

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