GCMS blank results for sample AE03611, March 28, 2002

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Laboratory report documenting GCMS analysis of a method blank for sample AE03611 to verify analytical system cleanliness.

NYC-WTC_000037700–000037719

Folder label: “GCMS X 2/19/02 A 3/8/02”

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NYC 9/11 Public Portal Document

* Library Search Compound Report * Data File : C:\MSDCHEM\l\5973N\02MAR08\03^Ll.D Vial: 1 Acq On : 8 Mar 2002 3:35 pm Operator: Sample : 508 scan Inst : Instrumen Mise : March 8, 2002 Multiplr: 1.00 MS Integration Params: LSCINT.P Quant Method : C:\MSDCHEM\1...\HP022102.M (RTE Integrator) Title : 508 scan method Library : C:\DATABASE\WILEY7N.L ********************************************************************* Peak Number 4 Butanoic acid, 2-methyl-, m.. Concentration Rank 6

R.T. EstConc Area Relative to ISTD R.T. 4.64 0.12 ug/L 57915 1,4-Dichlorobenzene-d4 9.71 Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 Butanoic acid, 2-methyl-, methyl... 116 C6H12O2 000868-57-5 59 2 Butanoic acid, 2-methyl-, methyl... 116 C6H12O2 000868-57-5 53 3 Butanoic acid, 2-methyl-, methyl... 116 C6H12O2 000868-57-5 53 4 Butanoic acid, 2-methyl-, methyl... 116 C6H12O2 000868-57-5 53 Abundance Scan 112 (4.638 min): 03511 .D (-) m/z 88.00 100.00% 57 83

41 5000 51 101 4.20 4.40 4.60 4.80 5.00 ' 0- ■•।•4 -I m/z 57.00 84.25% miz-> 20 30 40 50 60 70 80 90 100 110 120 Abundance #16439: Butanoic acid, 2-methyl-, methyl ester (CAS) $$ Me... 57 88

41 5000 i ■ ■ ■11 ■ ■ ■ ■ ■ ■ ■ ■ ।1 ■ ■ ■ । ‘ ■ ■ 4.20 4.40 4.60 4.80 5.00 101 m/z 41.10 55.80% 69 0- ■ i ■ ■ • • i ■ ■ • • i • ■ ■ ‘ i ‘ ■ I- miz-> 20 30 40 50 60 70 80 90 100 110 120 Abundance #16436: Butanoic acid, 2-methyl-, methyl ester (CAS) $$ Me... 57 88 AAAAAA 4.20 4.40 4.60 4.80 5.00 5000 m/z 85.00 29.91%

27 101 33 69 , 116 0- ■ i ■ ■ ■ ■ i ■ 1 ■ ■ i ■ ' ■ ■ t ■ ‘ i ‘ ■ ■ ■ i 1 ■ ■ 1 i ■ ■ 1 ' i ‘ ' miz-> 20 30 40 50 60 70 80 90 100 110 120 Abundance #16441: Butanoic acid, 2-methyl-, methyl ester (CAS) $$ Me... i ‘ ■ i • ■ ■ ■ i ■ ■ ■ • i • ■ ■11 ■ ■ 88 4.20 4.40 4.60 4.80 5.00 57 m/ Z 56.10 26.14%

5000 41 29 101 69 0 ■ i ‘ ■ i 1 ‘ i ■ ■ ■ 1 i ' ■ 1 ■i'■■■i■'■'i■' r p-TT-rr -T-T-r; < r > । 1 : i ■ ■ ■ ■ i ■ ■ • ■ i ■ ■ • ' i ■ ■ ' ■ i ■ ■ miz—> 20 30 40 50 60 70 80 90 100 110 120 4.20 4.40 4.60 4.80 5.00

03511.D HP022102.M Fri Mar 15 10:09:10 2002 Page 6

NYC-WTC_000037709

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NYC-WTC_000037709Source: NYC Law Department, mirrored locally

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GCMS blank results for sample AE03509, March 28, 2002 · Box DEP Box 23

NYC-WTC_000037660

Laboratory report documenting GCMS analysis of a method blank for sample AE03509 to verify analytical system cleanliness.

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