GCMS blank analysis report for sample AE12735, June 2002

Machine-extracted title · confidence 100%

Log sheet recording sample numbers, drip rates, pH levels, and other processing metrics for multiple environmental samples.

NYC-WTC_000015135–000015158

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

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Data File C:\MSDCHEM\1\DATA\0 60 7 02\LBA.D Vial: 10 Acq On 7 Jun 2002 3:55 pm Operator: Sample gc/ms scan 6/3 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 5 Methane, chloro Concentration Rank 3 R.T. EstConc Area Relative to ISTD R.T. 3.95 3.10 ug/L 2151730 1,4-dichlorobenzene-d4 9.89 Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Methane, chloro 50 CH3C1 000074-87-3 5 2 Methane, chloro 50 CH3C1 000074-87-3/5 3 Methane, chloro - 50 CH3C1 000074-87-3 4 4 (.beta.-Chloroethyl)trimethylamm. .. 157 C5H13C12N 000999-81-5 4 Abundance Scan 148 (3.949 min): LBA.D (-147) (-)• m/z 47.10 100.00% 4750 37 84 88 5000

43 3.60 ' 3.80'' 4.00' ' 4.20' '

miz-> ol " i ■" ■ i" "i1 “'i1"■ i "i" Mil ■ i' ■ ‘' r " ■ i “ ■ ■ i" ■ ‘ i" " i ■ 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 11 ■" ■ i “ m/z 50.05 90.57% Abundance #12334: Methane, chloro- 50 15

5000- ■ ■ । • • • ■ । ■ ■ ■ ■ । ■ i » i 1 ■ 1 ■ । ■ 3.60 3.80 4.00 4.20 m/z 37.10 74.57%

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miz-> 01 5 10 15 20mH + " i1 ‘। 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 । ■11 ■1 ■ • । ।।।। “

Abundance #111051: Methane, chloro- 50 ' ‘ I ■ ' ‘ ' I ' ' ' ' I ‘ ‘ ‘ ‘ I 1 ' ‘ ' I ' 3.60 3.80 4.00 4.20 5000 m/z 84.00 64.00% 15

miz-> ol 12 24 — 47. H +3 3538 'm ■"' i1111111' 11t ■■ i ■ ■ 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 । ■ ■ ■■ i ■•1■ i ■ ■ “ i ■" •।‘ “ i ‘' i ■ ■" i

Abundance #111052: Methane, chloro- ' ‘ I ‘ ‘ ‘ ' I ' ' ' ‘ I ‘ ‘ ' 1 ' ' ' 1 I ‘ 50 3.60 3.80 4.00 4.20 m/z 88.00 55.43% 5000- MM*ku. 47, n/z-> 25 0 TIUOnmpmpT 35 H " i" " i 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 “ i “ " i “ ■ • i r“11" " i" “ I" " I'1 ' 1 I ' ' ' ' I 1 ' ' ' I ‘ ‘ ‘ ‘ I ■ ' ' ' I ' 3.60 3.80 4.00 4.20

LBA.D 060302.M Mon Jun 10 11:27:21 2002 Page 8

NYC-WTC_000015146

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NYC-WTC_000015146Source: NYC Law Department, mirrored locally

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