GCMS analysis results, sample AE12477, June 2002

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Laboratory report showing GCMS analysis results for sample AE12477 including surrogate recovery data on June 10, 2002.

NYC-WTC_000014433–000014459

Folder label: “GCMS X 5/28/02 A 5/29/02”

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NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\l\DATA\052902\12477.D Vial: 19 Acq On : 30 May 2002 12:45 am Operator: McLean Sample : gc/ms scan 5/28 Inst : Instrumen Mise Multiplr: 1,00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\052202.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L ********************************************************************* Peak Number 10 Methylene Chloride Concentration Rank 8 R.T. EstConc Area Relative to ISTD R.T. 4.23 1.22 ug/L 732929 1,4-Dichlorobenzene-d4 9.90 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 Methylene Chloride 84 CH2C12 000075-09-2 2 2 Acetic acid, dichloro-, ethyl ester 156 C4H6C12O2 000535-15-9 2 3 Acetic acid, dichloro-, ethyl ester 156 C4H6C12O2 000535-15-9 2 4 Methylene Chloride 84 CH2C12 000075-09-2 2 Abundance Scan 195 (4.225 min): 12477.D (-193) (-) m/z 49.10 100.00% 35 49 88 50001 58

3.80 4.00 4.20 4.40 4.60 Of “ i ■ ■ ■ ■ i ■ ■ •' i “ TIT 1 11 " 11" 111 ib''11 ■' ■ • i1 ‘ “ i •1 ■ ■ i " ■ ■ i ■1 ■ ■ i ■ ■ ‘ ■ i ‘ • m/z 35.1089.62% m/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Abundance #111040: Methylene Chloride 49 Ww 84

5000 i 1 1 ■ ‘ i ' u ■ ■ i ‘ ' i ■ ‘ )ib.t 3.80 4.00 4.20 4.40 4.60 35 m/z 87.95 58.69%

niz-> Of

Abundance -24 14 or 70 ‘11 ■ " ■ I “ ■ • i1 10 20 30 40 50 60 70 80 90 100 110 120 130' 140 150 ‘iso'

29 #334: Acetic acid, dichloro-, ethyl ester "MLA/ 3.80 4.00 4.20 4.40 4.60 5000 m/z 41.05 48.94%

01 48 83 rrpr 19. Jil - 37,l 57 $5. 731 .1,1. , 93. 192 111.121 12%., 141—155 ,., "WMWMWanpwl.,. n/z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Abundance #108006: Acetic acid, dichloro-, ethyl ester 29 3.80 4.00 4.20 4.40 4.60 m/z 48.05 44.28% 5000

15; 48 83 "AAAAA..,, O' - .... 11.37,.1.57, 65. 731, 1,93, 101 ,111 ..123., 140, ■. 154. Tl/Z-> 10 :20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 3.80 4.00 4.20 4.40 4.60

12477.D 052202.M Mon Jun 03 11:39:32 2002 Page 13

NYC-WTC_000014450

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NYC-WTC_000014450Source: NYC Law Department, mirrored locally

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NYC-WTC_000014406

Laboratory report showing GCMS analysis results for sample AE12476 including surrogate recovery data on June 10, 2002.

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