GCMS analysis comments for sample AD28689, Dec 2001

Machine-extracted title · confidence 100%

Laboratory report noting low pH and TurboVap contamination with recovery data for sample AD28689.

NYC-WTC_000035195–000035228

Folder label: “GCMS X 11/24/01 A 12/4/01”

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NYC 9/11 Public Portal Document Library Search Compound Report

Data File : C:\HPCHEM\1\DATA\NOV2601\28682.D Vial: 10 Acq On : 28 Nov 2001 2:05 am Operator: 209 GALOS Sample : 11/24 scan 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 3 3,6-Dioxa-2,4,5,7-tetrasilaoct Concentration Rank 1

R.T. EstConc Area Relative to ISTD R.T.

36.15 1.95 ug/1 179777 Perylene-dl2 37.12

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 3,6-Dioxa-2<4,5,7-tetrasilaoctane, 294 C10H3002Si4 004342-25-0 33 2 Trisiloxane, 1,1,1,5,5,5-hexamethyl 384 C12H36O4Si5 003555-47-3 27 3 1,2-Benzenedi carboxylic acid, bis(t 310 C14H22O4Si2 002078-22-0 14 4 Trisiloxane, octamethyl- 236C8H24O2Si3 000107-51-7 12 Abundance Scan 3389 (36.153 min): 28682.D (-) m/ z 73.00 100.00% 73 147 221

5000 281 355 35.80 36.00 36.20 36.40

miz-> 49 91 —T TT,TTTTTTT 193 . npmmmmm 253 253 1.. 227.41 ........ 1, 40 60 80 100120140 160 1 80200220240260280300320340 360380 400420 m/z 147.00 88.73% Abundance #41682: 3,6-Dioxa-2,4,5,7-tetrasilaoctane, 2,2,4,4,5,57,7- 147 221

73 5000- 35.80 36.00 36.20 36.40 191 117 279 m/z 220.90 / 79.60% __ ____________ | I T’’I"TIOUTETTCTTETITTTTTT mptpmmmmmm miz- 40 60 80 100120140160180200220240260280300 320 340360380400420 Abundance #74103; 7 siloxane, 1.1,1.5,5,5-hexamethyl-3,3-bis[uimet 73 147 "I 1 I ' 1 1 ' I I • ' ‘ I ' 1 ' ' I ' 35.80 36.00 36.20 36.40 5000 m/z 281.00 39.37? 39.37% 281 45 369 117 , 207 249 TTpT ’ITTTUTTCTTCICTTETTTTTTTUTTTTTTTTUTTTUTTTTTTTTTWTgTp m/z-> 40 60 80 100120140160180200220240260280300320 340360380400420 _ Vanoa Abundance #72972:1 2-Benzenedicarboxylic acid, bis(trimethylsilyl) e ■ I ■ ■ > ■ j > T TT 147 __ 35.80 36.00 36.20 36.40 m/z 207.00 34.56% 73 5000-

45 295 Pywwn miz-? l... ......... mfo -.... ........ 193 221 40 60 80 1001201401601802002202402602803003 20340360380400420 35.80 36.00 36.20 36.40

28682.D GCMS1126.M Mon Dec 10 12:12:18 2001 Page 3

NYC-WTC_000035227

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NYC-WTC_000035227Source: NYC Law Department, mirrored locally

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GCMS blank analysis for sample AD28662, Dec 2001 · Box DEP Box 22

NYC-WTC_000034971

Blank test results confirming no detectable contaminants above method detection limits for sample AD28662.

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