GCMS blank analysis report for sample AE12735, June 2002

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Log sheet recording sample numbers, drip rates, pH levels, and other processing metrics for multiple environmental samples.

NYC-WTC_000015135–000015158

Folder label: “GCMS X 6/3/02 A 6/7/02”

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NYC 9/11 Public Portal Document Library Search Compound Report Data File C:\MSDCHEM\1\DATA\0 6 0 7 0 2\LBA.D Vial: 10 Acq On 7 Jun 2002 3:55 pm Operator: Sample gc/ms scan 6/3 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 13 Cyclotetrasiloxane, octamet.. Concentration Rank 16 R.T. EstConc Area Relative to ISTD R.T. 9.22 0.24 ug/L 163301 1 ,4-dichlorobenzene-d4 9.89 Hit# of 5 Tentative ID MW MolForm CAS# Quai NCA 1 Cyclotetrasiloxane, octamethyl- 296 C8H24O4Si4 000556-67-2 83 2 Cyclotetrasiloxane, octamethyl- 296 C8H24O4Si4 000556-67-2 78 3 Cyclotetrasiloxane, octamethyl- 296 C8H24O4Si4 000556-67-2 72 4 HH-Dibenzo [b, e] [1,4] diazepin-11.. . 281 C17H19N3O 013450-70-9 37 Abundance Scan 1044 (9.213 min): LBA.D (-1037) (-) m/z 281.00 100.00% 281

5000

57 73 43 249 265 133 193207 8.80 9.00 9.20 9.40 9.60

mz-> — L. O'. I... ■ l.. ll T ' i “ ■ ■ I' ■1' 111'' 111" 111 T-r i ■ ■ " i ■' “ 111" '111111 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 m/z 282.00 29.45% Abundance #128142: Cyclotetrasiloxane, octamethyl- 281

5000 ■ ■ i ' 1 ' ■ i ■ ■ 8.80 9.00 9.20 9.40 9.60 m/z 283.00 21.52% '73 87 103 119133147 163177 193207221235249 265 25 51 0- . i.।i *... i. +299. miz-> 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 Abundance #97367: Cyclotetrasiloxane, octamethyl- 281

8.80 9.00 9.20 9.40 9.60 5000 m/z 57.10 19.11%

1 33 207

n/z-> 0 0 15 29 45 59 73 *

20 40 60 L. . 96 । ». 119 I 147 163177191 I 221235249 265 -1 h. . ... ■. IJ .n . J j »' I « J • I .I I I I I I I | • I I I I ' f I I | l 14 . j ’* n 1 .1 1 ! /’* ’’I’ * ' ' I ' T » rf »- i * T | I J“'l l | ’ I I 80 100 120 140 160 180 200 220 240 260 280 300 . in it, +295— Abundance #128141: Cyclotetrasiloxane, octamethyl- । । । . A, A. 281 8.80 9.00 9.20 9.40 9.60 m/z 193.00 12.26% 5000

73 265 O—T — M4 77193207 235 45 59 | ■ । ■ • ■ ■ । ■ I Pp i ■ ■ " i ■ ■ ■' i " ■ ■ i 1tt1 133 I i ■ ■ " i ■ ■ ■111'1 ■ n/z—> o 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 8.80 9.00 9.20 9.40 9.60

LBA.D 060302.M Mon Jun 10 11:27:37 2002 Page 16

NYC-WTC_000015154

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