DEP document fragment, February 2002

NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\HPCHEM\l\DATA\02feb05\2085.D Vial: 8 Acq On : 5 Feb 2002 11:23 pm Operator: 201-wb Sample : 524 nyc 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 2,4-Imidazolidinedione, 3-meth Concentration Rank 5

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

15.78 0.05 ug/L 56399 1,4-DIFLUOROBENZENE 15.11

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2,4-Imidazolidinedione, 3-methyl- 114 C4H6N2O2 006843-45-4 3 2 1-(Propenylthio)prop-1-ene 114 C6H10S 000000-00-0 3 3 3-Cyclobutene-1,2-dione, 3,4-dihydr 114 C4H2O4 002892-51-5 2 4 Ethyl diazoacetate 114 C4H6N202 000623-73-4 2 Abundance Scan 683 (15.775 min): 2085.D (-) m/z 114.15 100.00% 1 4

5000 63 88 ■ ■ i ■ ' ■ ■ i ■ 39 50 57 75 1540 15.60 15.80 16.00 16.20 ..................... 1 44 1 m/z 88.10 26.75% i ' ■ ‘ ‘ i ■ ■ ■ ■ i • ' ' mfc-> 20 30 40 50 60 70 80 90 100 110 120 Abundance #64088:2,4-Imidazolidinedione, 3-methyl- 1 4

58 5000 ■ i ■ ■ ' • i ■ • ' ■ i • ■ ■ ' i • ■ ■ ■ i • 15.40 15.60 15.80 16.00 16.20 86 m/z 62.95 23.05% 42 71 ’IdtOII !>>>]> ‘ 1 ‘ ' I ' ' i■। ■ ■ • ■ । • l ■ । z-> 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/z57.05 14.16%

85 I..... LI",. ■ Y.. ■ ' i ' 1 1 ' i ■ • ■ ■ I ■ ■ ■ ■ i ' Tt r 1 m/z—> 20 30 40 50 60 70 I80 90 100 110 120 Abundance #64087:3-Cyclobutene-1,2-dione, 3,4-dihydroxy- T T 1**’ It 29 58 15.40 15.60 15.80 16.00 16.20 m/z 50.05 13.87%

5000 114

... 1 — 41 T i ' ■ ■ 68 ■ i ■ ■ ■ ■ i ■ ■ 86 1 ' i ■ 1 ■ ' i ‘ ■ ■ ■ ■ ■ ' i ‘ 1 n/z—> 20 30 40 50 60 70 80 90 100 110 120 15.40 15.60 15.80 16.00 16.20

2085.D HP020502.M Wed Feb 06 00:04:43 2002 Page 4

NYC-WTC_000019380