GCMS analysis results for sample AE03075, March 5 2002

NYC 9/11 Public Portal Document Library Search Compound Report . Data File : C: \MSDCHEM\1\5973N\02FEB28\02715.D Vial: 5 Acq On : 28 Feb 2002 1:50 pm Operator: Sample : 508 scan Inst : Instrumen Mise : February 28, 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 3 R.T. EstConc Area Relative to ISTD R.T. 3.62 0.18 ug/L 72280 1,4-Dichlorobenzene-d4 9.72 Hit# of 5 Tentative ID MW Mol Form CAS# Qual 1 Butanoic acid, methyl ester (CAS... 102 C5H10O2 000623-42-7 83 2 Butanoic acid, methyl ester 102 C5H10O2 000623-42-7 83 3 Butanoic acid, methyl ester 102 C5H10O2 000623-42-7 78 4 Butanoic acid, methyl ester (CAS... 102 C5H10O2 000623-42-7 78 Abundance Scan 22 (3.622 min): 02715.D (-) m/z 43.10 100.00% 43 74

5000 59 87 —PAm ........ A 3.50 3.60 3.70 3.80 3.90 4.00 --- / 0- ■ ■ t ■ ■ ■ ' । ■ ■ ■ • । • ■ ■ ■ । m/z 74.00 97.15% niz-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9227: Butanoic add, methyl ester (CAS) $$ Methyl butyrat... 43 74

5000 '"I"' 3.50 3.60 3.70 3.80 3.90 4.00 59 87 m/Z 71.00 70.69% 69 102 0—1 4, —IPTH ■ ■ i ■ ‘ ■ 1 i ■ ■ ■ 1 i'1 ■ • ■ i niz-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9217: Butanoic acid, methyl ester 43 74 ■ i ■ > 11 |A 11111.11 " i “ 3.50 3.60 3.70 3.80 3.90 4.00 5000 m/ Z 59.00 29.67% 27 59 87 102 0- ■ ■ i 1 ■ 1 • i ■ ■ ■ ■ I 33 i 1 ——————————— I'1 ■ i ■ • 1 ■ I ■ ■ ■ ■ i n/z-> 10 20 30 40 50 60 70 80 90 100 110 Abundance #9219: Butanoic acid, methyl ester 43 3.50 3.60 3.70 3.80 3.90 4.00T 74 m/z 41.10 27.56%

5000 27 15 59 87

m/z—> 0J .. 1 1 i 10 20 30 33 38 | 1 1 I 40 50 60 70 | 102 1 ' i ' 1 ■*' । ’ 1 rT i * 1 1 1 i ' 80 90 100 110 A AL. 3.50 3.60 3.70 3.80 3.90 4.00

32715.D HP022102.M Fri Mar 01 10:07:06 2002 Page 3

NYC-WTC_000010913