GCMS surrogate recovery results, sample AE12326, June 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\l\DATA\052902\12326.D Vial: 17 Acq On : 29 May 2002 11:07 pm 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 2 Methylene Chloride Concentration Rank 1 R.T. EstConc Area Relative to ISTD R.T. 3.73 5.14 ug/L ' 3283080 1,4-Dichlorobenzene-d4 9.90 Hit# of 5 Tentative ID MW MolForm CAS# Qua. 1 Methylene Chloride 84 CH2C12 000075-09-2 96 2 Methylene Chloride 84 CH2C12 000075-09-2 94 3 Methylene Chloride 84 CH2C12 000075-09-2 91 4 Methylene Chloride 84 CH2C12 000075-09-2 64 Abundance Scan 111 (3.731 min): 12326.D (-94) (-) m/z 49.10 100.00% 4)9 84

5000

■ • i ■ ■ ■ ■ i ■ ■ • • i 1 ■ ■ • i ■ ■ ■ ■ i

88 3.40 3.60 3.80 4.00 35 4144 0 mpmmmmmpm- \mmmou tyai m/z 84.00 69.70% m/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 _/ Abundance #12327: Methylene Chloride 49 84 5000 ■ ■ । ■ ■ ■ • । • ■ 1 ■ । ■ ‘ ■ ■ ।' ■ * • । 3.40 3.60 3.80 4.00

88 ot . 11... 111.14 18 24 2831 353841 11 J 2 111.... । > 111j. ।. 111... 1111.111.. ।. 11 70, - niz-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #111041: Methylene Chloride 49 • • i 1 ■ ■ ■ i ■ 1 ■ ■ i ■ ■ ' ' i ' ■ ■ ■ i 84 3.40 3.60 3.80 4.00 5000- m/z 51.10 / 35.00%

46 2629 41 >2 59 65 73 77 88 01 T I"' ‘I ” I l' l‘l l. ■" I “■■III HI ■f+TTTyTTTTp-rTvpn-rrfTTTTp-rr^^ ll»l. I . miz-> 5 10 15 2025303540 45 50556065 70 75 80859035 Abundance #111039: Methylene Chloride 49 3.40 3.60 3.80 4.00 m/z 47.10 14.26% 84 5000' AW* 2831 3538 43 [, 88 57 67 71 77 0 —————————————— 152umTmTm - ' ■ i • • ■ ■ i • 1 ' 1 i • ■ ■ ■ i ■ 1 ■ ■ i m/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 3.40 3.60 3.80 4.00

12326.D 052202.M Mon Jun 03 11:32:47 2002 Page 5

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