GCMS sample analysis results, AE11799, June 3, 2002

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Laboratory report presenting analytical results for target compounds and surrogate recovery data for water sample AE11799.

NYC-WTC_000012794–000012822

Folder label: “GCMS X 5-21-02 A 5-22-02”

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NYC 9/11 Public Portal Document

Library Search Compound Report Data File : C: \MSDCHEM\1\DATA\052202\11799 . D Vial: 6 Acq On : 22 May 2002 5:54 pm Operator: Mclean Sample : 5/21 ad Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e g** Quant Method : C:\MSDCHEM\1\METHODS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C: \DATABASE\NIST98 . L ********************************************************************* Peak Number 11 2-Pentanone, 4-hydroxy-4-me... Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T. 5.94 11.45 ug/L 9144000 1,4-Dichlorobenzene-d4 9.90 Hit# of 5 Tentative ID MW MolForm CAS#

1 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 2 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 3 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H12O2 000123-42-2 4 Acetic acid, 1,1-dimethylethyl e... 116 C6H12O2 000540-88/5 25 Abundance Scan 487 (5.941 min): 11799.D (-481) (-) m/ z 43.10 100.00% 43

5000 59

101 I 5.60 5.80 6.00 6.20 0- 1 69 83 I ' ' ■ ■ i ■ • ■ • i ■ ■ 1 1 i 1 1 ' ' I .......... 207 m/z 59.10 43.09% n/z-> 20 40 60 80 100 120 140 160 180 200 Abundance #109755:2-Pentanone, 4-hydroxy-4-methyl- 43

5000 59 ■ ■ i ■ ' 1 ■ i ' ■ 5.60 m/z 5.80 58.10 L 6.00 111 ■ ■ ■ • । 6.20 21.33% 15 31 101 0- Jr । lpl, l | I 1 “,I I t—I t t I83'» t I I * II t « 1 « I « I > t 1 1 1 1 1 1 I t < I —t l > I I »

miz- > 20 40 60 80 100 120 140 160 180 200 Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- 43 ’*1**’’1**’*I’’**I**’I 5.60 5.80 6.00 6.20 5000 m/z 101.10 16.99% 59 101 0- ..... 27 A 1/69 83 ... .......................... ■ ' ■ i ' ' ■ 1 I1 ■ ■ 1 1 ■ ■■ ■i 1'■• i1 > । ■। ' 1 1 1 i 11 1 ' i‘ 1 1 1 i 1 1 m/z-> 20 40 60 80 100 120 140 160 180 200 Abundance #109756:2-Pentanone, 4-hydroxy-4-methyl- ■ ■ i ■ ■ ■ ■ i ■ ■ ‘ ■ i ■ ■ • ■ i 43 5.60 5.80 6.00 6.20 m/z 41.15 6.64% 5000 59

31 83 101 /z—> 0 rr i l|l, 20 40 ■ TH1EERHTPPUIT 60 80 100 120 140 160 180 200 =PPPPP 5.60 5.80 6.00 6.20

11799.D 052202.M Tue May 28 12:02:54 2002 Page 14

NYC-WTC_000012812

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Laboratory report presenting analytical results for target compounds and surrogate recovery data for water sample AE11901.

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