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 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 18 Methylene Chloride Concentration Rank 18 R.T. EstConc Area Relative to ISTD R.T. 5.69 0.32 ug/L 237196 1,4-dichlorobenzene-d4 9.89

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Methylene Chloride 84 CH2C12 000075-09-2 4 2 Methylene Chloride 84 CH2C12 000075-09-2/4 3 Thiophene 84 C4H4S 000110-02-1 2 4 Thiophene 84 C4H4S 000110-02-1 2 Abundance Scan 444 (5.688 min): LB.D (-442) (-) m/z 84.00 00.00% 49 84

5000

43 87 40 5.40 5.60 5.80 6.00 0! ■ ■ i ■ ■ ■ ■ i ■ ■ ■ ■ i ■ • “ i■1■'11111111" 111 *1111 111 1 J ‘ ‘ 11 ' ' ' ' l * ‘ ‘ I “ “ I ‘ ' ‘ ‘ 1 ‘ ‘ " r ‘1’111118 m/z 49.10 83.51% n/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 84 5000 5.40 5.60 5.80 6.00 46 m/z 47.00 ", 20.38% 2629 41 59 65 | . 52 73 77 88 01 ■ '1111 ■!' I ■' >!' '"I"' ■! ’I H |I । I 1" i ■ ■ ■ ‘ i" " i" ■ ‘ i ■ “11 ■ ‘1 ■ i ■ ■1 11 ■ l.I। miz-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #111039: Methylene Chloride 49 84 5.40 5.60 5.80 6.00 5000 m/z 87.00 18.20%

2831 3538 43 52 57 67 71 77 0) ■ ■ i" " i ■"' i'1111 ‘"1111" 111" I" " I"111' Tupmamomonpoooorf 88 H Mnj Aw m/z-> Abundance 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 #116585: Thiophene 84 ' I ‘ 5.40 ' 7I1 5.60 (ALAALALL 5.80 6.00 m/z 88.00 18.01% 5000 45 58 "MMMAWmAAWMW. 39

m/z-> 12 18 26 32 36 42 0 —————— 111 ii 11 + 50 ++ , 69 7 81 7 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 ri

5.40 5.60 5.80 6.00

LB.D 060302.M Tue Jun 11 08:26:34 2002 Page 21

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