GCMS blank analysis results for sample AE10134, May 7 2002

Machine-extracted title · confidence 100%

Gas chromatography-mass spectrometry blank analysis showing results below method detection limits for organic compounds.

NYC-WTC_000044381–000044395

Folder label: “GCMS X 4/29/02 A 5/3/02”

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NYC 9/11 Public Portal Document

• Data File C : \MSDCHEM\ 1 \DATA\ 05 02 02 \42 9LB . D Vial: 16 Acq On 3 May 2002 1:32 am Operator: Mclean Sample 4/29 ad 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 1 Methylene Chloride Concentration Rank 2

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

3.78 0.72 ug/L 441013 1,4-Dichlorobenzene-d4 9.94

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Methylene Chloride 84 CH2C12 000075-09-2 94 2 Methylene Chloride 84 CH2C12 000075-09-2 72 3 Methylene Chloride 84 CH2C12 000075-09-2 72 4 Methylene Chloride 84 CH2C12 000075-09-2 59 Abundance Scan 119 (3.778 min): 429LB.D (-92) (-) m/z 49.10 100.00% 49 /" 84

5000

i i |~ i I I i | i । i i | I i । r | i i i i । ।

88 340 360 3.80 4.00 4.20 r 111 r 1111'1" i111 ‘ i'1 ■1 r 1111 + m/z 84.00 77.70% m/z-> Abundance 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 #111040: Methylene Chloride 40 PW/MMHwa 84

5000 r-1 rm i ‘|1‘I j i i-! III i । । ।

3.40 3.60 3.80 4.00 4.20 35 m/z 86.00 49.94% 88 ""

n/z-> ■ ■ । 14 +841 52 2528 । ■ 1111111 ■ > > ■ i ■ ■ • ■ । 70 32 ■ i111'1 H 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 TT

Abundance #111039: Methylene Chloride 49 I I I I I I I I i'll I I I I I I I I I I [ I 84 340 3.60 3.80 4.00 4.20 5000 m/z 51.10 32.90%

2831 3538 43 || ,52 57 r i | r i i i | i i < > j < i I I [ H I । | । I I I | I > । I | I I I । | I I I i”! I I I 67 71 77 lr" 111" ' I " " I " 1111" 1 r " 111'1 88 1 —+ 11' 11’1 pusypu/“MWi 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 1 1 1 1 1 ' I 1 1 1 1 I 1 1 1 1 1 1 1ftId 49 3.40 360 3.80 4.00 4.20 m/z 47.00 24.10% 84 5000 "Maap?”yhypoA 88

/z-> TTyr 5 14 18 24 2831 353841 TTTTTTTTTTOL 70 111" 11 TTTTTTTT — p-rr 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 +2— 1 i ' ' 1 1 i 1 ' 1 1 i 1 ■ ' ' i 1 1 1 1 i ■ 3.40 3.60 3.80 4.00 4.20

429LB.D 050102.M Mon May 06 12:27:32 2002 Page 4

NYC-WTC_000044387

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GCMS analysis results for sample AE10134, May 8 2002 · Box DEP Box 25

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Laboratory report documenting GCMS analysis of sample AE10134 conducted on May 8, 2002.

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