GCMS blank analysis results, June 11 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\l\DATA\0610022\LB.D Vial: 7 Acq On : 10 Jun 2002 3:54 pm Operator: Sample : gc/ms scan 6/7 Inst : Instrumen Miso 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 2 Methylene Chloride Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T. 3.72 7.94 ug/L 5935490 1,4-dichlorobenzene-d4 9.89

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Methylene Chloride 84 CH2C12 000075-09-2/95 2 Methylene Chloride 84 CH2C12 000075-09-21 95 3 Methylene Chloride 84 CH2C12 000075-09-291 4 Methylene Chloride 84 CH2C12 000075-09-2 43 Abundance Scan 109 (3.720 min): LB.D (-92) (-) m/z 49.10 100.00%| 49 84

5000

miz-> 01 mr5 10. 15 7 ... .1373841.. 52 Tt 70 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 + 88 "1“' m/z 3.40 3.60 84.00 3.80 4.00 74.21%| Abundance #111039: Methylene Chloride 49

84 5000 3.40 3.60 3.80 4.00 | m/z 86.00 46.22%| 2831 3538 43 | 88 0 2 57 67 71 77 . - TEupnponmmpt /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 ■ 1 ■ i ■ ■ ■ 1 i ■ ■ ■ ■ i ■ ■ ■ ■ i ■ ■ ■ • i 84 3.40 3.60 3.80 4.00 5000 m/z 51.10 31.39%|

88 14 18 24 2831 353841 || Ot "TIHTTTTTTTTTHT 152 ________ 70______ _ Hmm I ■ • ■ i ■ ■ ■ ■ i ■ ■ ■ ■ i ■ ■" 11 ■" i ■''11 ■11 m/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #111041: Methylene Chloride 49 3.40 3.60 3.80 4.00 m/z 47.05 19.33% 84 / 5000

46 *wo m/z-> 2629 41 I .52 59 65 0 TTITTTTHTTH Tupmmgmagmuurt 5 73 77 88 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

LB.D 060302.M Tue Jun 11 08:25:24 2002 Page 5

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