GCMS blank results for sample AE03509, March 28, 2002

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

NYC-WTC_000037660–000037679

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\1\5973N\02MAR08\03509.D Vial: 5 Acq On : 8 Mar 2002 1:57 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 10 2,2,7,7-Tetramethyloctane Concentration Rank 8 R.T. EstConc Area Relative to ISTD R.T. 8.59 0.12 ug/L 62543 1,4-Dichlorobenzene-d4 9.71 Hit# of 5 Tentative ID MW MolForm CAS# Qua

1 2,2,7,7-Tetramethyloctane 170 C12H26 001071-31-4 4 2 HEXANOL - 4-D2 104 C6H12D20 053778-67-53 3 Octane, 2,5,6-trimethyl- 156 C11H24 062016-14-250 4 Dodecane, 2,2,11,11-tetramethyl- 226 C16H34 127204-12-0 50 Abundance Scan 462 (8.589 min): 03509.D () m/z 57.10 100.00% 57

5000 43 71 85 99 8.20 8.40 8.60 8.80 9.00 --------- ■ ■ - i 1 - 0- -1′2111333 TFT T i f-r-. “ ! "'"i ■ m/z 56.10 43.49% miz-> 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Abundance #74461:2,2,7,7-Tetramethyloctane 57

5000 ' i ' ■ ' ■ i 1 1 8.20 8.40 8.60 8.80 9.00 71 85 m/z 43.10 27.30% 27.. _ H 0- • i ■1 ‘ ■ i • ■ ■ ■ i ■ ■ ■ • i ■1 99 112 155 TI T r i *»* < i'»•»i1 * • * j * • * * i * * ■ < ।«»< i । ‘ t*.. । < > miz-> 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Abundance #9568: HEXANOL-4-D2 57 ■ i ■ ■ ■ ■ i ■ ' 8.20 8.40 8.60 8.80 9.00 5000 m/z 71.00 23.27%

70 85 ...................... 0 ■ i1 ■ ■ • i ■1 ,I ■' i • ■ • ■ i ■1 I’ TIT—mu,mauI9mojir miz-> 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Abundance #56277: Octane, 2,5,6-trimethyl- 57 8.20 8.40 8.60 8.80 9.00 m/z 41.10 21.73% 5000 43

mZz—> 0 ■ । ■ ■ ■ ■।।_1■ ■1__ 20 30 40 1 ‘ ■ 1 50 60 + 70 85 99 —-■ i ■ ■ ■ ■ i ‘127 156 • i ■ ■ ■11 ■ ■ ■ ■ i' ■ ■ ■ i ■ ■ 70 80 90 100 110 120 130 140 150 160 8.20 8.40 8.60 8.80 9.00

03509.D HP022102.M Fri Mar 15 10:08:58 2002 Page 12

NYC-WTC_000037675

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NYC-WTC_000037675Source: NYC Law Department, mirrored locally

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GCMS blank results for sample AE03508, March 2002 · Box DEP Box 23

NYC-WTC_000037635

Laboratory report documenting GCMS analysis of a method blank for sample AE03508 to verify analytical system cleanliness.

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