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\l\DATA\DEC0401\28689.D Vial: 14 Acq On ‘5 Dec 2001 1:04 am Operator: 209 GALOS Sample gc/ms 11/24 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 16 Mercaptoacetic acid, bis(trime Concentration Rank 4

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

43.98 1.47 ug/1 217635 Perylene-dl2 37.13

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Mercaptoacetic acid, bis(trimethyls 236 C8H2002SSi2 006398-62-5 32 2 1,1,1,5,7,7,7-Heptamethyl-3,3-bis(t 444 C13H4005Si6 038147-00-1 25 3 Trisiloxane, 1,1,1,5,5,5-hexamethyl 384 C12H3604Si5 003555-47-3 25 4 3 ,6-Dioxa-2,4,5,7-tetrasilaoctane, 294 C10H30O2Si4 004342-25-0 17 •Abundance Scan 4241 (43.977 min): 28689.D (-) m/z 72.9 100.00% 73 147 221 5000 281 355 43 91! 119 193 । i 327 ,..............429 43.60 43.80 44.00 44.20 44.40

m/z-> - TH T TTTTTT । p______ Hm n i in । n1 40 60 80 100120140160180200220240260280300320340 360 380400420 t "ITTTEOTEOTOTT m —

Abundance #30949: Mercaptoacetic acid, bis(trimethylsilyl)- 73 147

5000 43'60 43.80 44.00 44.20 44'4'0 221 m/z 221. / .. .................................... . ....... ............... —........................................ ................ m/z->__ 40 60 80 100 120 140 160 ISO 200 220 240 260 280 300 320 340 360 380 400 420 Abundance #56714:1.1.7. 2.7.7 7 «septamethyl-3.3-bis(trimethyisilxy)( 73. 1 i ' 1 147 43.60 43.80 44.00 44.20 44.40 5000 267 m/z 281.00 36.34% 355 429 / 45 207 : I miz-> 40 60 80 100 120140160180 200 220 240 260 280 300 320 340 360 380 400 420 ' ‘ Abundance। #74103: Trisiloxane, 1,1,1,5,5,5-hexamethyl-3,3-bis[(trimet 73 43.60 43.80 44.00 44.20 44.40

A 147 m/z 354.9,5 30.80% 5000 281 45 369 I 117 207 249 - m/z-> 40 80 100120140160180 200 220 240 260 280 300 320 340 360 380 400 420 *1 43.60 43.80 44.00 44.20 44.40

28689.D GCMS1126.M Mon Dec 10 10:20:14 2001 Page 16

NYC-WTC_000035217

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NYC-WTC_000035217Source: 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.

1 shared topics · Same agency, volume and box · similarity 0.998