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GCMS sample analysis results, AE11903, June 3, 2002

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Laboratory report presenting analytical results for target compounds and surrogate recovery data for water sample AE11903.

NYC-WTC_000012908–000012936

Folder label: “GCMS X 5-21-02 A 5-22-02

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NYC 9/11 Public Portal Document Library Search Compound Report Data File : C:\MSDCHEM\l\DATA\052202\11903.D Vial: 10 Acq On : 22 May 2002 9:09 pm Operator: Mclean Sample : 5/21 ad Inst : Instrumen Mise : Multiplr: 1.00 MS Integration Params: LSCINT.e Quant Method : C:\MSDCHEM\1\METHODS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan "* Library- : C:\DATABASE\NIST98.L

Peak Number 18 2,6-Dimethyl-3,4-bis(trimet... Concentration Rank 6 R.T. EstConc Area Relative to ISTD R.T.

36.45 1.32 ug/L 745171 Perylene-d12 34.66

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 2,6-Dimethyl-3,4-bis(trimethylsi... 311 C15H29NO2Si2 1000079-52-1 5 2 3,6-Dioxa-2,4,5,7-tetrasilaoctan... 294 C10H3002Si4 004342-25-0 40 3 1,1,1,5,7,7,7-Heptamethy1-3,3-bi. . . 444 C13H40O5Si6 038147-00-1/40 4 Mercaptoacetic acid, bis(trimeth... 236 C8H20O2SSi2 006398-62-5 38 Abundance Scan 5679 (36.447 min): 11903.D (-5668) (-) rn/z 73.10 100.00% 73 221 147

5000 281 355 w 429 51 325 36.20 36.40 36.60 36.80 191 „ I, 0- 1B 1 ■ r ■ 1 1ih 1 PHT" ii ‘ ‘ ‘ ‘ I ‘ v ‘ ‘ I ‘ m/z 221.10 83.16% vfz~> 50 100 150 200 250 300 350 400 Abundance #87845:2,6-Dimethyi-3,4-bis(trimethylsilyloxymethyl)pyridine 73 221

5000 147 —------4+4-- 36.20 36.40 36.60 36.80 178 m/z 147.10 77.85% 45

niz-> 0- 15 . 1 "1 -r rrttr 50 L 9-129 44,, 26.296. 100 150 400 200 250 300 350 Abundance #87890:3,6-Dioxa-2,4,5,7-tetrasilaoctane, 2,2,4,4,5,5,7,7... 147 221 +444—4**A4a-4-—— 21I 73 36.20 36.40 36.60 36.80 5000 m/z 280.95 39.22% _ 191 117 279 0- 45 1 ‘l , 1 ‘ f"1 1... L, 249 I............... • miz-> 50 100 150 200 250 300 350 400 Abundance #26950:1,1,1,5,7,7,7-Heptamethyl-3,3-bis(trimethylsiloxy)... 73 36.20 36.40 36.60 36.80 m/z 355.00 37.94% 147 5000 267 355 429 45 207

mfe-> 0 /G 50 100 150 200 250 300 350 400 ' 1 1 1 ■ *> I 1 1 1 1 1 1 1 36.20 36.40 36.60 36.80

11903.D 052202.M Tue May 28 12:08:00 2002 Page 21

NYC-WTC_000012933

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