GCMS analysis results for unknown compounds, June 2002

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Laboratory report documenting GCMS analysis of sample AE12739 with surrogate recovery data and identification of unknown compounds.

NYC-WTC_000015311–000015339

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

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NYC 9/11 Public Portal Document LDLaLy beaici tompounu KepLL

Data File C:\MSDCHEM\1\DATA\060702\12742.D Vial: 16 Acq On 7 Jun 2002 8:47 pm Operator: Sample 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 1 Methylene Chloride Concentration Rank 2

R.T. EstConc Area Relative to ISTD R.T. 3.71 3.67 ug/L 2410780 1,4-dichlorob'enzene-d4 9.89

Hit# of 5 Tentative ID MW MolForm CAS# Qu.

1 Methylene Chloride 84 CH2C12 000075-09-2/ 95 2 Methylene Chloride 84 CH2C12 000075-09- 91 3 Methylene Chloride 84 CH2C12 000075-09- 91 4 Methylene Chloride 84 CH2C12 000075-09- 91 Abundance Scan 107 (3.708 min): 12742.D (-94) (-) m/z 49.10 100.00% 49 84

5000

■ ■ i ■ ■ ■ . i ■ ■ ■ ■ i ' ■ ' ■ i 35 . 88 3.40 3.60 3.80 4.00 01 " I'1 ‘ 'I' ‘"111111 ‘"’l'1 r> if >' < i/l1,384144 f 111 II 111. H1 Tmmmp , 70 11' l m i'" m/z 84.00 75.77% n/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #12327: Methylene Chloride 49 84 5000 ‘ 1 ' 1 1 1 ‘ ' I 4 ‘ ‘ I ‘ ‘ ‘ I ' ' ' ' I 3.40 3.60 3.80 4.00 m/z 86.00 42.64% 14 18 || 52 ■I"..!............ ... ............... . 24 2831 353841 88 01TIP—HmmTTDTTHtHmi - n/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #111040: Methylene Chloride 49 84 ' ' ‘ I ‘ ‘ ‘ I ' ' ‘ ‘ I ' ' ' ‘ 1 ' ‘ ‘ ' I 3.40 3.60 3.80 4.00 5000 m/z 51.05 30.57% 35 88 14 2528 32 ,3841 1 +2 01mmmmammp । i | । I I l | l i । I | I fl i । I I j r p l I 70 — niz-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #111039: Methylene Chloride 49 3.40 3.60 3.80 4.00 m/z 47.10 20.26% 84 .** 5000

2831 3538 43. .52 57 67 71 77 . 88 0 ■ • i • • >»i'"' i *' * ■ i ■ * *' l “ ‘1111 ■1111 “ i"1 * j ‘ *1 ]!> I | | | 1 1 < [ ( 1 1 . | n I ! J I > I ! | 1 . , 1 | I l | — miz-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 3.40 3.60 3.80 4.00

12742.D 060302.M Mon Jun 10 11:26:20 2002 Page 4

NYC-WTC_000015319

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NYC-WTC_000015319Source: NYC Law Department, mirrored locally

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Laboratory report documenting GCMS analysis of sample AE12737 with surrogate recovery data and identification of unknown compounds.

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