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GCMS analysis with surrogate recovery, sample AE10895, May 2002

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Gas chromatography-mass spectrometry analysis of sample AE10895 with 91% surrogate recovery for 2,4-DDD, conducted May 21, 2002.

NYC-WTC_000024070–000024082

Folder label: “GCMS X 5/10/02 A 5/16/02

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NYC 9/11 Public Portal Document Llbrary searen compound. Report Data File : C:\MSDCHEM\1\DATA\051602\10895.D Vial: 8 Acq On : 16 May 2002 8:14 pm Operator: Mclean Sample : 5/10 eh Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L Peak Number 2 2-Pentanone, 4-hydroxy-4-me... Concentration Rank 1 R.T. EstConc Area Relative to ISTD R.T. 5.97 16.38 ug/L 11070100 1,4-Dichlorobenzene-d4 9.93

Hit# of 5 Tentative ID MW MolForm CAS#

1 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 2 2-Pentanone, 4-hydroxy-4-methyl- 116 C6H1202 000123-42-2 72 3 2-Pentanone, 4-hydroxy-4-methyl- 116 C.6H1202 000123-42-2 64 4 Acetic acid, 1,1-dimethylethyl e... 116 C6H12O2 000540-88-5 36 Abundance Scan 492 (5.970 min): 10895.D (-485) (-) m/z 43.10 100.00% 43

5000 59 101 5.60 5.80 6.00 6.20 6.40

niz-> O+ —00010001111338,) +4853+ 10 20 30 40 50 60 70 69 83 . | Nr 1 । 1 i ' 1 ' ' 1 11 ' 1 i 1 1 1 ■*" i 1 1 1 1 i । 80 90 100 110 m/z 59.10 35.48% Abundance #109755: 2-Pentanone, 4-hydroxy-4-methyl- 43

5000 . i r 59 5 60 5.80 6.00 6.20 6.40 m/z 58.10 22.35% 15 31 101

m/z-> O+ ..... 10 1 ..... 20 ...... 30 38, 40 +53+ 50 —d/m———— 60 70. 80 , I 83 ——TTT 90 100 110 Abundance #109756:2-Pentanone, 4-hydroxy-4-methyl- 43 5.60 5.80 6.00 6.20 6.40 5000 m/z 101.10 14.16% 59

93 — 93 101| miz-> Ot ......... 10 20 29,31 30 .38,140 11 III't 50 60 70 80 83 90 100 110 Abundance #5851:2-Pentanone, 4-hydroxy-4-methyl- 1 ' i ■ 1 i ■ ■ ■ ■ i ■ 4)3 5.60 5.80 6.00 6.20 6.40 m/z 41.10 5.97% 5000 59 . 101 0 ........... . ■ 1 । ■' ■111 ■1111 1 11 । 1 381 . 48 53,. —1— *‘l ■ 67 72 77 83 l 1 91 96, | TTTm—mmtm m/z-> 10 20 30 40 50 60 70 80 90 100 110 5.60 5.80 6.00 6.20 6.40

10895.D 050102 .M Fri May 17 15:03:54 2002 Page 4

NYC-WTC_000024078

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NYC-WTC_000024078Source: NYC Law Department, mirrored locally

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