GCMS blank analysis results for volatile organics, April 2002

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Laboratory report documenting GCMS blank analysis for multiple organic compounds on April 24, 2002.

NYC-WTC_000043332–000043339

Folder label: “GCMS X 4/23/02 A 4/24/02”

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NYC 9/11 Public Portal Document

Library Search Compound Report

Data File : C:\HPCHEM\1\DATA\APR2402\LB.D vial: 3 Acq On : 24 Apr 2002 5:47 pm Operator: Sample : gc/ms scan 4/23 Inst : 209 Mise Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\HPCHEM\1\METHODS\GCMS0412.M (RTE Integrator) Title : 209 625/TCLP calibration table Library : C:\DATABASE\NBS75K.L ********************************************************************* Peak Number 1 2-Pentanone, 4-hydroxy-4-methy Concentration Rank 1

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

8.19 3.91 ug/1 525198 1,4-Dichlorobenzene-d4 12.21

Hit# of 5 Tentative ID MW MolForm CAS# Qual ----------- |---------------------------- 1 2-Pentanone, 4-hydroxy-4-methyl - 116 C6H1202 000123-42-2 72 2 Acetic acid, 1,1-dimethylethyl este 116 C6H1202 000540-88-5 33 3 tert-Butyl Hydroperoxide 90 C4H10O2 000075-91-2 25 4 2-Propanol, 2-methyl-___________ 74'C4H10O 000075-65-0 17 Abundance 7 Scan 342 (8.188 min): LB.D (-) m/z 43.05 100.00% - 43

59 5000 101 — | I I I I | I > I T | I I !5 | I I I I | I r

7.80 8.00 8.20 8.40 8.60 69 83 r ■ ■ - ■ । ' ■ ■ ■ । 314 -4+ 53 . ——— —— — m/z 59.05 50.98% m/z-> 10 20 30 5040 60 70 80 90 100 110 Abundance #64274: 2-Pentanone, 4-hydroxy-4-methyl- 43

5000- 59 7.80 8.00 8.20 8.40 8.60 m/z 101.05 21.32% 27 101 A m/z-> 10 20 30 40 -H 50 60 70 49—+ 80 83 I 1 1 '’’“i ' 1 1 1 i drr 90 - 100 110 Abundance #3292: Acetic acid, 1,1-dimethylethyl ester 43 7.80 8.00 8.20 8.40 8.60 5000 57 m/ z 58.05 16.60%

101 15 27 r i ।■ i i । । i । ii । । r I I I I I I I I 1 I 1 1 1 1 1 1 1 1 ' 1 ‘ I ' ' 1 1 I ' ’ 1 1 I ' 1 1 ' I m/z~> 10 20 30 40 50 60 70 80 90 100 110 Abundance #922: tert-Butyl Hydroperoxide 1 1 i ■ 1 — _ 59 7.80 8.00 8.20 8.40 8.60 43 m/ z 41.05 8.11%

5000-

.... i 1 1 ■ ' i 1 r ■ 1 31 371 i 1 1 1 1 i 1 1 1 i 1 I ' 1 1 1 i ■ ' ■ ■ i 1 1 1 ■ i 1 1 1 1 i ■ ' 1 1 i . | I ! , I | I I , T ] I I I I | — I P [ I m/z-> 10 20 30 40 50 60 70 80 90 100 110 7.80 8.00 8.20 8.40 8.60

LB.D GCMS0412.M Thu Apr 25 11:17:24 2002 Page 1

NYC-WTC_000043338

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NYC-WTC_000043338Source: NYC Law Department, mirrored locally

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NYC-WTC_000044245

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