GCMS analysis results, sample AE12320, June 2002

NYC 9/11 Public Portal Document Llorary searen compound Keporc Data File : C:\MSDCHEM\l\DATA\052902\12320.D Vial: 8 Acq On : 29 May 2002 3:47 pm Operator: McLean Sample : gc/ms scan 5/24 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 2 Methylene Chloride Concentration Rank 2 R.T. EstConc Area Relative to ISTD R.T. 3.72 3.99 ug/L 2511100 1,4-Dichlorobenzene-d4 9.90 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Methylene Chloride 84 CH2C12 000075-09- 96 2 Methylene Chloride 84 CH2C12 000075-09- 95 3 Methylene Chloride 84 CH2C12 000075-09- 94 4 Methylene Chloride 84 CH2C12 000075-09- 91 Abundance Scan 109 (3.720 min): 12320.D (-93) (-) m/z 49.10 100.0 49 84

5000

+ ■ ■ ■ i ■ ■ • • i ■ • ■ ■ i ■ • • ■ i ■ ■ • ■ i 88 3.40 3.60 3.80 4.00

miz-> 46284144.4.5 0! ‘ ■ I ‘1 ■ ‘ I ‘ ‘ ‘ I'''' I ‘‘ ‘ I “ “ I' ‘ • 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 58 TIBPTTT 70_______ , m/z 84.00. 74.63% Abundance #12327: Methylene Chloride 49 84 5000 ■ * ■ i ■ ■ ■ ■ i ■ ■ ■ ■ । • ■ ■ ■ । ‘ 1 ■ i 3.40 3.60 3.80 4.00 m/z 86.00 47.70% 88 miz-> 14 18 24 2831 353841 Ot —II—p—tn—mnamumOp—Htm—n) J 52 70 P—nEpdmmnapmnmprf 5 10 15 20253035404550556065 70 75 80859095 4 Abundance #111039: Methylene Chloride 49 ~• i ■ ‘ ' i 1 ■ ■ 1 i 1 1 ■ 1 i 1 1 1 't 84 3.40 3.60 3.80 4.00 5000 m/z 51.05 29.52%

88 ,152 57 67 71 77 2831 3538 43 Ot “ i1 “ ■ i “ ■ ■ i Tmmmmpt tH i" ■■ i'1111 ■■ ■' 11'111"111 ■ miz-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #111040: Methylene Chloride 49 3.40 3.60 3.80 4.00 84 m/z 47.10 15.48%

5000

35 88 _P* mfz-> 14 0 TpHpTTUTTTHMTTHp 5 2528 32 ,38441 T 152 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 70 H 1 ■ i ■ ■ ■ ■ i ■ • ■ ■ i • • ■ ■ i ■ ■ • ■ i 3.40 3.60 3.80 4.00

12320.D 052202.M Mon Jun 03 09:38:43 2002 Page 5

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