GCMS blank analysis results, Jan 2002

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Laboratory report documenting gas chromatography-mass spectrometry blank analysis for volatile organic compounds conducted on January 7, 2002.

NYC-WTC_000019049–000019060

Folder label: “GCMS X 12/13/01 A 12/22/01 AND 12/27/01”

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NYC 9/11 Public Portal Document

Library Search Compound Report

Data File : C:\HPCHEM\1\DATA\DEC2701\LBA.D Vial: 4 Acq On : 27 Dec 2001 1:06 pm Operator: 209 GALOS Sample : GC/MS SCAN 12/13 Inst : GC/MS 209 Mise Multiplr: 1.00 MS Integration Params: LSCINT.P

Quant Method : C:\HPCHEM\1\METHODS\GCMS1126.M (RTE Integrator) Title : 209 625/TCLP calibration table Library : C:\DATABASE\NBS75K.L ********************************************************************* Peak Number 5 Trisiloxane, 1,1,1,5,5,5-hexam Concentration Rank 5

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

20.28 0.44 ug/1 167974 Acenaphthene-dl 0 20.56

Hit# Of 5 Tentative ID MW MolForm CAS# Qual

1 Trisiloxane, i, 1,1,5,5,5-hexamethyl 384 C12H3604Si5 003555-47-3 42 2 3-Isopropoxy/l,1,1,7,7,7-hexamethyl 576 C18H5207Si7 071579-69-6 36 3 3-Isopropoxy-1,1,1,5,5,5-hexamethyl 354 C12H3404Si4 072182-11-7 20 4 Heptadecangic acid, trimethylsilyl 342 C20H42O2Si 055517-58-3 9 Abundance Scan 1660 (20.280 mln): LBA.D (-) m/z 73.00 100.00% 73

5000 147 281 4 miz-> 45 — TTr 50 117 , 100 150 191 221 251 ' *1* i Itip 200 250 300 . 3’,, . .... . 350 400 450 500 550 20.00 20.20 20.40 20.60 m/z 147.00 34.72% Abundance #52459: Trisiloxane, 1,1,1,5,5,5-hexamethyl-3,3-bls[(trimet 73 147 281 5000 20.00 20.20 20.40 20.60 369 m/z 281.00 32.01% 207 249. 338 I m/z-> arli 50 100 150 200 I I. I

250 300 350 400 450 500 550 Abundance #60503; 3-sopropoxy-1.1,1,7.7,7-hexamethyl-3,5,5-tris(trim 73 .. ,/...... 20.00 20*20 20.40 20.60 5000 m/z 326.90 12.58% 147 221 281 327 415 i 519 561 ■ ‘ i ' ■ ' • I ■ ' ■ ■ i ' ■ ■ • i ■ ' • ■ i 1 -r-t-T I ' ■ ‘ I ' ' ' ' I ■ ' ‘ ' I ‘ ‘ ' 1 ‘ ‘ I 1 ' m/z-> 50 100 150 200 250 300 350 400 450 500 550 Abundance #49645:3-lsopropoxy-1,1,1,5,5,5-hexamethyl-3-(trimethyfsil 73 281 20.00 20.20 20.40 20.60 m/z 282.00 9.83% 5000 207 339 249 I i .......... ............ 1 i ■ ■ r ‘ i ' 1 । ■ ■ ■ ■ । ■ ■ ■ ■ । ■ • ■ ■ । ■ ■ ■ ■ । ■ ■ miz--> 50 100 150 200 250 300 350 400 450 500 550 20.00 20.20 20.40 20.60

LBA.D GCMS1126.M Fri Dec 28 15:07:42 2001 Page 5

NYC-WTC_000019059

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NYC-WTC_000019059Source: NYC Law Department, mirrored locally

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Laboratory report documenting gas chromatography-mass spectrometry blank analysis conducted on December 27, 2001.

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