GCMS blank analysis results for sample AE03184, March 2002

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Laboratory report documenting a GCMS blank test for sample AE03184 conducted on March 6, 2002.

NYC-WTC_000006026–000006044

Folder label: “GCMS X 2/12/02 A 3/01/02”

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NYC 9/11 Public Portal Document Y OCCLUL MULpULIIU REDULU

Data File : C:\MSDCHEM\l\5973N\02MAR01\0212B.D Vial: 1 Acq On : 1 Mar 2002 10:18 am Operator: Sample : lab blank 2/12 Inst : Instrumen Mise : March 1, 2002 Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\MSDCHEM\1...\HP022102.M (RTE Integrator) Title : 508 scan method Library : C : \DATABASE\WILEY7N . L ********************************************************************* Peak Number 1 Butanoic acid, methyl ester Concentration Rank 5 R.T. EstConc Area Relative to ISTD R.T. 3.62 0.11 ug/L 52271 1,4-Dichlorobenzene-d4 9.71 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Butanoic acid, methyl ester 102 C5H10O2 000623-42-7 83 2 Butanoic acid, methyl ester (CAS... 102 C5H10O2 000623-42-7 83 3 Butanoic acid, methyl ester 102 C5H10O2 000623-42-7 83 4 Butanoic acid, methyl ester (CAS... 102 C5H10O2 000623-42-7 83 Abundance Scan 22 (3.622 min): 0212B.D (-) m/z 43.10 100.00% 43 74

5000 59 87 -A A 11 " " i1 " 11 " " i1 " 11 51 , 3.50 3.60 3.70 3.80 3.90 4.00 |................... m/ z 74.00 95.98% 0- ■ ■ । ■ i ■ ■ । ■ i ■ ■ < ■ । 1 1 'I 1 11 1 1 1 1 1 1 r ' i 1 r ' ‘ 1 1 1 1 1 1 1 1 1 1 r m/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9217: Butanoic acid, methyl ester 43 7.4

5000 11''1' i''' ‘ i'''' i 27 3.50 3.60 3.70 3.80 3.90 4.00 59 87 m/z 71.00 77.64% 33 102 0 IIIIII* 1,1 1 i ' 1 rT^ TT ' ' i 1 ■ ' ■ i ■ ■ ' ■ i 1 1 ' ' i m/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9222: Butanoic acid, methyl ester (CAS) $$ Methyl butyrat... 43 74 ’ 1’4 \1...... A.... ' i'1'1111' ■ i11 " i'1'' i 3.50 3.60 3.70 3.80 3.90 4.00 5000 m/ z 41-10 35.29% 59 87

33 102 0- 1 ■ i ' ■ 1 ■ i 1 ■ ' ■ i 111 ■ i .......... T T ■ ■ । ■ 1 । ■ ■ ■ ■ । i ■ ■ ■ । m/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9218: Butanoic acid, methyl ester 1' i11 . ..... A 43 3.50 3.60 3.70 3.80 3.90 4.00 74 m/ Z 59.00 26.28%

5000 27 15 59 87 33 102 0 ■ ■ । ■ i ■ ■ > ■ i -' ■ ■ ■ i i'. ' i ' " 'h " TTT IIIIIIIIIIII’IIII 111 " '11 " 1111 " 1111 " 1111' I m/z-> 10 20 30 40 50 60 70 80 90 100 110 3.50 3.60 3.70 3.80 3.90 4.00

212B.D HP022102.M Mon Mar 04 12:32:44 2002 Page 3

NYC-WTC_000006031

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