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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 10 1,1,1,5,7,7,7-Heptamethyl-3... Concentration Rank 14 R.T. EstConc Area Relative to ISTD R.T.

22.80 0.46 ug/L 412664 Phenanthranene-dl0 22.95 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 1,1,1,5,7,7,7-Heptamethyl-3,3-bi... 444 C13H40O5Si6 038147-00-1 45 2 Heptasiloxane, 1,1,3,3,5,5,7,7Z9... 504 C14H4406Si7 019095-23-9 32 3 3-Isopropoxy-1,1,1,7,7,7-hexamet... 576 C18H5207Si7 071579-69-6 25 4 Dithioerythritol, tetrakis(trime... 442 C16H4202S2Si4 1000079-30-7 17 Abundance Scan 3356 (22.798 min): 0507LB.D (-3336) (-) m/ z 73.10 100.00% 73

5000 147 221 __ -------------- 281 355 429 22.40 22.60 22.80 23.00 23.20 Oh 45 ..........„. ........... 1 I I I I I I 1 I I ) I I I I I 1 325 | 4011................. 1 ' | 11 1 1 1 1ll T | - I I I | ! > T ! | I ! I l p t m/z 147.00 35.19% m/z-> 50 100 150 200 250 300 350 400 450 500 550 Abundance #26950: 1,1,1,5,7,7,7-Heptamethyl-3,3-bis(trimethylsiloxy)... 73

147 5000 267 i 1 1 ’ ' i T 355 429 22.40 22.60 22.80 23.00 23.20 45 207 m/z 221.10 24.60% ft 0+ m/z-> 50 100 150 200 250 300 350 400 450 500 550 Abundance #27374: Heptasiloxane, 1,1,3,3,5,5,7,7,9,9,11,11,13,13-tet... 73 ...JI.... 22.40 22.60 22.80 23.00 23.20 5000 207 m/z 429.20 11.61%

133 281 355

m/z-> 45 50 103 Ji 1771 0K 1 1 i ' ' 100 150 P

200 2531 | 3271 L 383 429 । | । 489 250 300 350 400 450 500 550 I r i । I i i i | 3 r *

Abundance #26784: 3-Isopropoxy-1 ,1,1,7,7,7-hexamethyl-3,5,5-tris(tri... T4I * ' i ‘"ft 1 i ■ ■ 73 22.40 22.60 22.80 23.00 23.20 m/z 281.00 11.13%

5000 147

m/z~> x 43

O+r 1 ' I ' 50 100 150 200 221

250 281 I 22 327 .. 415 4"I111"111‘‘I "UU1 । [ । । । 1 I । T-Rp" 300 350 400 450 500 519 561 550 22.40 22.60 22.80 23.00 23.20

0507LB.D 050102.M Thu May 16 12:35:57 2002 Page 13

NYC-WTC_000045952

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NYC-WTC_000045952Source: NYC Law Department, mirrored locally

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