GCMS blank results for VOCs, sample AE12326, June 2002

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Laboratory report showing GCMS blank analysis results for volatile organic compounds in sample AE12326 on June 3, 2002.

NYC-WTC_000014351–000014374

Folder label: “GCMS X 5/28/02 A 5/29/02”

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NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\1\DATA\052902\LBA.D Vial: 14 Acq On : 29 May 2.002 8:41 pm Operator: McLean Sample : gc/ms scan 5/28 Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\052202.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Library : C:\DATABASE\NIST98.L ********************************************************************* Peak Number 2 Methylene Chloride Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T. 3.72 3.43 ug/L 2021520 1,4-Dichlorobenzene-d4 9.90 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 91 3 Methylene Chloride 84 CH2C12 000075-09-2 91 4 Methylene Chloride 84 CH2C12 000075-09-2 40 Abundance Scan 109 (3.720 min): LBA.D (-93) (-) m/z 49.10 100.00% 49 84

5000

3.40 3.60 3.80 4.00

miz-> Of 11 88 H 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 TmTTMTTTTTH m/z 84.00 70.97% Abundance #12327: Methylene Chloride 49 84 5000 i ■ ■ ‘ ■ i ■ ■ ■ ■ i 3.40 3.60 3.80 4.00 m/ Z 86.00 42.65% 14 18 24 2831 353841 11 52________ 70______ . 88 0 .. ।....।. 111|.... ।., 111111111 it i| 11111 li।.1111 Tuumnm —mdmmmanmpu - miz-> 5 10 15 2025303540 45 50556065 70 75 80859095 Abundance #111041: Methylene Chloride 49 ' ■ ‘ I ‘ ‘ ' ■ I • ' ' ■ I ■ ' ' ■ I 1 1 1 ‘ I 84 3.40 3.60 3.80 4.00 5000 m/z 51.10 25.04% —/ 46 2629 41 I , 52 59 65 73 77 88 0! .. !. .. . । ... i|i. 11 | 11 . i|1l.I|i.1.|r..1111II[ I TTmpB—m—mmmgmmogorf thpmp m/z-> 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Abundance #111039: Methylene Chloride 1 1 1 i ■ ■ ■ 1 1 1 1 1 1 i ■ ■ ■ ■ i ■ 1 ‘ ■ i 49 3.40 3.60 3.80 4.00 m/z 47.10 19.83% 84 5000 —/W 2831 3538 43 ! 2 1— 57 88 0 .. 1.... I ... 11 U l 1 | . I ! I | I I I I | I 11 11 I I I > | ! I I I 67 71 77 ■ l-j < ■ ‘■ t n/z-> 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

LBA.D 052202.M Mon Jun 03 11:28:09 2002 Page 5

NYC-WTC_000014359

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