GCMS blank analysis results, June 5 2002

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Laboratory report showing non-detect levels of volatile organic compounds in a GCMS blank sample analyzed on June 5, 2002.

NYC-WTC_000015496–000015523

Folder label: “GCMS X 6/4/02 A 6/4/02”

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NYC 9/11 Public Portal Document

Library Search Compound Report Data File C:\MSDCHEM\l\DATA\060402\604LB.D Vial: 3 Acq On 4 Jun 2002 5:29 pm Operator: McLean Sample 6/4 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 9 Acetic acid, chloro-, ethyl... Concentration Rank 8 R.T. EstConc Area Relative to ISTD R.T. 4.15 0.84 ug/L 415161 1,4-dichlorobenzene-d4 9.90 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 Acetic acid, chloro-, ethyl ester 122 C4H7C1O2 000105-39-5 9 2 Ethyl Chloride 64 C2H5C1 000075-00-3 2 3 2-Chloroethanol 80 C2H5C10 000107-07-3 2 4 2-Chloroethanol 80 C2H5C1O 000107-07-3 2 Abundance Scan 182 (4.148 min): 604LB.D (-181) (-) m/z 49.10 (100.00% 49

5000 86 . ..................................... . i । । । . 37 3.80 4.00 4.20 4.40 ol , mM - । , 1,1 111, I 1‘.......................... ‘ ‘I‛41145141 1'1 II m/z 86.00 / 34.49% miz-> 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #108005: Acetic acid, chloro-, ethyl ester 23

5000 ‘ ■ i 1 1 ■ 1 i • ■ ■ ■ i ' ■ ■ ■ i ■ ■ ' ■ i ■

77 3.80 4.00 4.20 4.40 42 49 m/z 51.10 / 24.25% 14

niz-> 01 । ' l ll, ■ i ■ i-l 10 20 30 +35—40 1,1,/"50 । ■ 5960 65~ 70। ■ 80| 889094 100 107110 120122 130 ' 1 1 I ■ 1 ■ ■ । • 1 ' i * ■ i ' ■ ' • i ' 1 ■ ■ i ’

Abundance #107943: Ethyl Chloride 23 ‘ 1 i ■ ■ • ■ i • ■ ■ ■ i ■ ‘ ‘ ■ i ■ ' ■ • i • 3.80 4.00 4.20 4.40 64 5000 m/z 37.00 9.56%

15 Ol 1 1 1 I all, 1 i ' । +lr, 35 II,, 49

■ re-el ‘1‘*r‘11111111111111111111111‘‘11 MtWMyhwaak Tl/Z-> 10 20 30 40 50 60 70 80 90 100 110 120 130 Abundance #108296:2-Chloroethanol ' ' I • ‘ • i ■ ■ ■ ■ i ■ 1 1 1 i 1 ‘ 1 ' I 1 31 3.80 4.00 4.20 4.40 m/z 47.00 9.56% 5000 /+-. 0 15 25 । . 37 43 49 55 61 80 I***luddaaa**II*2****1P ■ • i ■ ■ > • i ■ ■ • ■ i ' 1 ■ ■ I ■ 1 > « j ' n/z-> 10 20 30I 40 50 60 70 80 90 100 110 120 130 3.80 4.00 4.20 4.40

604LB.D 060302.M Wed Jun 05 12:28:47 2002 Page 12

NYC-WTC_000015511

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GCMS blank analysis results, sample AE11799, May 2002 · Box DEP Box 15

NYC-WTC_000012751

Gas chromatography-mass spectrometry blank analysis for sample AE11799 showing results below method reporting limits for semivolatile organic compounds, dated May 28, 2002.

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