GCMS blank analysis results, Jan 2002

Machine-extracted title · confidence 92%

Method blank report confirming absence of contamination during volatile organic compound testing procedures in January 2002.

NYC-WTC_000016681–000016688

Folder label: “GCMS X 12/12/01 A 12/19/01”

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NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\HPCHEM\1\DATA\DEC1901\LB.D Vial: 3 Acq On : 19 Dec 2001 11:42 am Operator: 209 GALOS Sample : gc/ms scan 12/12 Inst : GC/MS 209 Mise Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\HPCHEM\1\METHODS\GCMS1126.M (RTE Integrator) Title : 209 625/TCLP calibration table Library- : C:\DATABASE\NBS75K.L ********************************************************************* Peak Number 1 N-Ethylformamide Concentration Rank 1 R.T. EstConc Area Relative to ISTD R.T. 7.60 4.52 ug/1 1094610 1,4-Dichlorobenzene-d4 11.67

Hit# of 5 ntative ID MW MolForm CAS# Qual

1 N-Ethylformamide 73 C3H7NO 000627-45-2 9 2 Pentane, 3-methoxy- 102 C6H140 036839-67-5 9 3 Silane, tetramethyl- 88 C4H12Si 000075-76-3 9 4 1-Butan/mine, 3-methyl- 87 C5H13N _____ 000107-85-7 7 Abundance Scan 279 (7.603 min): LB.D (-) m/z 72.95 1 00.00% 73

5000 43 *12////1//m/m//T//n 103 87 7.20 7.40 7.60 7.80 8.00 ..................... . LL hp 207 1111111111111111’tl 11 ‘ ‘‘11 T‘ m/z 43.00 28.10% m/z-> 10 20 30 40 50 60 70 80 90 100110120130140150160170180190200210 Abundance #292: N-Ethylformamide 30 73

5000 . । i ... fi -rrr । i । i । । i"!' i' । । i । 44 58 7.20 7.40 7.60 7.80 8.00 m/ z 45.05 10.31%

miz--> Abundance uu -'1....... ।.... ।।.... ।.... ।.........।....।(.... ।.... 11.. 10 20 30 40 50 60 70 80 90 100110120130140150160170180190200210 #1793. Pontane, 3.methoxy- 73 -’"1 ■ FT 7.20 , - 11 , 7.40 7.60 7.80 8.00 5000 m/z 41.0,0 9.81% 45

27 ,55 ‘ I i"“i ।.... ।.... ।.... fl.l.।....।....।....।....(....।.... ।।. ।.........।....(In1111111111 miz-> 10 20 30 40 50 60 70 80 90 100110120130140150160170180190200210 Abundance #845: Silane, tetramethyl- i 1 i . i . j'rm । । । 'p 1"? 73 7.20 7.40 7.60 7.80 8.00 m/z 71.00 6.37% 5000

. 45 15 31 , 5.5. ..।....।....।....111..।.*Ti.... 11 88 • i • i » > • • । > —IGan*‘s i miz-> 10 20 30 40 50 60 70 80 90 100110120130140150160170180190200210 7.20 7.40 7.60 7.80 8.00

LB.D GCMS1126.M Thu Jan 03 10:13:30 2002 Page 1

NYC-WTC_000016687

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NYC-WTC_000016687Source: NYC Law Department, mirrored locally

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GCMS blank analysis, sample AD31432, Jan 2002 · Box DEP Box 16

NYC-WTC_000016555

Blank analysis report for DEP sample AD31432 showing non-detect levels for volatile organic compounds from January 22, 2002.

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