GCMS surrogate recovery report, sample AE12283, June 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\l\DATA\0610022\12283.D Vial: 11 Acq On : 10 Jun 2002 7:10 pm Operator: Sample : gc/ms scan 6/7 Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\060302.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L Peak Number 7 Methylene Chloride Concentration Rank 2

R.T. EstConc Area Relative to ISTD R.T. 3.92 4.38 ug/L 3483560 1,4-dichlorobenzene-d4 9.90

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Methylene Chloride 84 CH2C12 000075-09-2 9 2 Methylene Chloride 84 CH2C12 000075-09-2 9 3 Methylene Chloride 84 CH2C12 000075-09-29 4 Methylene Chloride 84 CH2C12 000075-09-2 2 Abundance Scan 143 (3.919 min): 12283.D (-142) (-) m/z 49.10 Z00.00% 49

35 5000 84 88

52 72 ' ' • i ‘ 1 ■ ' i 1 ' ■ ■ i ■ ■ • • i ■ ‘ ■ i 3.60 3.80 4.00 4.20

n/z-> I 41 O+ ‘ ‘ i11111" ■11' ■' ■ i ■" ■ i ■ ■ .......................... 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 44.m-HH ■ i ■1 ■11 “ ■ m/z 35.10 52.57% Abundance #111041: Methylene Chloride 49 84 5000 ■ ■ ■ i ■ • ■ ■ i ■ ■ ■ ■ i 1 1 1 1 I 1 1 1 1 i 3.60 3.80 4.00 4.20 46 m/z 88.00 46.66% 2629 41 I ,52 59 65 73 77 88 01 —1——# f-Frn p. rt-p-r. T|. 11. । • i > 1111 > 111 > 1 11' I' I" " !■ ■ ■ miz-> Abundance 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 #12327: Methylene Chloride MWKor 1" 49 ■ ' ■ i ■ • ' ■ i ' ■ ■ ' i ■ ■ ■ ■ i ■ ■ ■ ■ i 84 3.60 3.80 4.00 4.20 5000 m/z 84.00 45.21%

88 14 18 24 2831 353841 ,$52________ 70______ , - Ot — ————————— TTman) —ETEDmHt miz-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #111039: Methylene Chloride 1 1 1 1 1 1 ' 1 1 1 1 1 1 I ■ ' ' ' 1 1 1 ' ' I 49 3.60 3.80 4.00 4.20 m/z 50.05 18.32%

50001 84

Mupl ”** 88

n/z-> 0- 5 2831 3538 43 ,152 57 67 71 77 ————————— 10 15 20 25 3035404550556065 70 75 808590 95 H ■ ■ i ■ ■ ■ ■ i • ■ ■ ■ i ■ r ■ ■ i ■ ■ ■ ■ i 3.60 3.80 4.00 4.20

12283.D 060302.M Tue Jun 11 08:23:54 2002 Page 10

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