GCMS analysis results, sample AE12531, June 2002

NYC 9/11 Public Portal Document Llbrary Search compound Report Data File : C:\MSDCHEM\l\DATA\052902\12531 .D Vial: 22 Acq On : 30 May 2002 3:11 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 7 Methylene Chloride Concentration Rank 5 R.T. EstConc Area Relative to ISTD R.T. 4.12 0.88 ug/L 669949 1,4-Dichlorobenzene-d4 9.90 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Methylene Chloride 84 CH2C12 000075-09-2 2 Methylene Chloride 84 CH2C12 000075-09-2 4 3 Methylene Chloride 84 CH2C12 000075-09/ /2 4 4 Borane, trifluoro- 68 BF3 007637-0-2 2 Abundance Scan 178 (4.125 min): 12531.D (-172) (-) m/z 49.10 100.00% 40

87 40 5000 43 55 1 ■ ■ i ■ ■ ■ ■ i ■ ' ‘ ■ i 1 ■ ■ ■ i ■ ■ ■ ■ ।

35 3.80 4.00 4.20 4.40 ol “ i “' ■ i “ " ।" i “ “ I “ “ i ■ ■ ■ ■ / “ “ 4 83 '' “ 1 " “ I “ ‘ • I' ' '' I' “ 'I' ‘ 1 ‘ * i' ** * i"1 m/z 87.10 64.16% niz-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #12327: Methylene Chloride 40 84 5000 3.80 4.00 4.20 4.40 m/z 84.95 52.60% 88

m/z-> 14 18 24 2831 353841 I 01 .. i<(l .t.. up i. u i .rq .r, ■ t.. j in .| in. |. ii 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 2 'I T"'‘I""

Abundance #111039: Methylene Chloride 49 84 3.80 4.00 4.20 4.40 5000 m/z 40.10 50.87%

2831 3538 43 || 88 ol pTTnyrrTTp-n-rj- it M J i I II | t tH | t !! 1 | t I I 52 57 67 71 i,. 111.. ।।।. 11 77 tmpn niz-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #111041: Methylene Chloride ■ ■ ■ i ■ ■ ■ ■ i 1 ■ ■ ■ i ■ ■ ■ ■ i ■ • 1 ' I 40 3.80 4.00 4.20 4.40 m/z 41.10 41.04% 84 5000

46 2629 41 I 59 65 88 01 TmmmmmmH ,152 — Hmmm 73 77 1*1*1**1****1***+*1 m/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 3.80 4.00 4.20 4.40

12531.D 052202.M Mon Jun 03 11:43:03 2002 Page 10

NYC-WTC_000014523