DEP document fragment, February 2002

NYC 9/11 Public Portal Document Library Search Compound Report - Data File : C:\HPCHEM\1\DATA\02feb05\2084FB.D Vial: 6 — Acq On 5 Feb 2002 9:56 pm Operator: 201-wb — Sample : 524 nyc field bl Inst : GC/MS Ins— Mise : February 5, 2002 Multiplr: 1.00 — MS Integration Params: LSCINT.P Quant Method : C:\HPCHEM\1\METHODS\HP020502.M (RTE Integrator) Title : VOCs BY EPA METHOD 524 Library : C:\DATABASE\NBS75K.L ********************************************************************* Peak Number 4 3-Cyclobutene-1,2-dione, 3,4-d Concentration Rank 5

R.T. EstConc Area Relative to ISTD R.T.

15.77 0.05 ug/L 52670 1,4-DIFLUOROBENZENE 15.11

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 3-Cyclobutene-1,2-dione, 3,4-dihydr 114 C4H2O4 002892-51-5 4 2 1-(Propenylthio)prop-1-ene 114 C6H10S 000000-00-0 3 3 2,4-Imidazolidinedione, 3-methyl- 114 C4H6N2O2 006843-45-4 3 4 Peroxide, dimethyl 62 C2H602 000690-02-8 2 Abundance Scan 683 (15.775 min): 2084FB.D (-) m/z 114.05 100.00%

i 1 4

5000 63 88 44 50 57 15.40 15.60 15.80 16.00 16.20 ‘ I*’’I*

miz-> .10..... 20 30 I,.50ML 40 60 70 ■ i ■ 1 ■ ■ i ‘ ■ 80 90 1 ■ ■ ■ ■ 1 1 ■ ' ■ 1 ■ 100 110 120 m/ Z 28.81% Abundance #2826:3-Cyclobutene-1,2-dione, 3,4-dihydroxy- 29 58

' i • ■ -r-r-p-r-r-r-j-r 5000 114 15.40 15.60 15.80 16.00 16.20 86 m/z 88.10 26.96% 17 40 —PPP —PPPPP i ‘ 68 ■ ■ i ■ ■ ■ ■ i ■ ■ ■ i ■ ■ ■ ■ i ■ ■ ■ ■ i ■ ' ■ I ' 1 miz->______ 10 20 30 40 50 60 70 80 90 100 110 120 Abundance #2940:1-(Propenylthio)prop-1-ene 41 1 4 99 ■ । ' ■ • ■ । ■ ■ ■ ■ । ■ ■ ■ ■ । ■ • ■ • । ■ 15.40 15.60 15.80 16.00 16.20 5000 m/z 57.05 18.02% condime

mlz-> 47 597 ■ ■ i • • ■ ■ i ■ ■ ■ ■ i • ■ ■ ■ i ■ ■ ' ■ i ■ ■ • ■ i ■ ■ ■ ■ 1 1 ■ ■ • i ■ • ‘ ■ i ■ ■ 10 2030405060 70 8090 100 110 '126’ Abundance #64088:2,4-lmidazolidinedione, 3-methyl- ■ I 1 ' ' ‘ I ‘ ‘ ■ ‘ I ‘ 1 4 15.40 15.60 15.80 16.00 16.20 m/z 50.05 16.55% 58 A 5000-

86 42 71 y-rTT-T-p-r-r-r-p-T ■ i ■ ■ • ■ 1 ■ ■ •11 ■ ‘ • 1 • ‘ * • i • • 4 ‘ i * ‘ ‘ ‘ * * i ‘ ‘ ■ ■ i 1 ■ /z—> 10 20 30 40 50 60 70 80 90 100 110 120 15.40 15.60 15.80 16.00 16.20

2084FB.D HP020502.M Tue Feb 05 22:36:26 2002 Page 4

NYC-WTC_000019364