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GCMS comments for sample AD2653S detecting 1,1,2,2-Tetrachloroethane

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Analysis report dated December 16, 2001, identifying 1,1,2,2-Tetrachloroethane at 3.4 ug/L in sample AD2653S.

NYC-WTC_000031814–000031830

Folder label: “GCMS X 11/6/01 A 12/7/01

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NYC 9/11 Public Portal Document

Library Search Compound Report

Data File C:\HPCHEM\l\DATA\DEC0701\26535.D Vial: 10 Acq On 8 Dec 2001 2:19 am Operator: GALOS Sample gc/ms unknown 11/6 Inst : GC/MS Ins Mise Multiplr: 1.00 MS Integration Params: LSCINT.P

Quant Method : C:\HPCHEM\1\METHODS\NP112701.M (RTE Integrator) Title : 208 625/TCLP calibration table Library : C:\DATABASE\NBS75K.L ********************************************************************* Peak Number 8 Cyclohexasiloxane, dodecamethy Concentration Rank 7

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

17.65 0.49 ng/uL 183034 Naphthalene-d8 15.49

Hit# of 5 Tentative ID MW MolForm CAS# Qual

1 Cyclohexasiloxane, dodecamethyl- 444 C12H3 606Si6 000540-97-6 78 2 3-Trimethylsilyloxystearic acid, tr 444 C24H5203Si2 000000-00-0 12 3 2H-1,4-Benzodi azepin-2-one, 7-chlor 342 C18H19ClN2OSi 055299-24-6 9 4 Silane, [1,2,3 -benzenetriyltris(oxy 342 C15H3QO3Si3 017864-23-2 9 Abundance Scan 1397 (17.650 min): 26535.D (-) m/ z 73.0.5 100.00% 73

5000 341 ) I 147 429 17.40 17.60 17.80 18.00

miz—> 45 mkm 117 | TIUCugpur 207 251I 311 L Tmpmm 40 60 80 100 120 140160 180 200 220 240 260 280 300 320 340 360 380 400 420 K m/z 340.95 30.98% Abundance #56711: Cyclohexasiloxane, dodecamethyl- 73 341

429 5000 । I’T 17.40 17.60 17.80 18.00 147 || m/ z 42 9.10 14.05% 117 | 207 267 311 l>... ITTTTTTTTTT’TT T I'1'11 r "' i i''" r1" i m/z-> 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 'Abundance #56734: 3-Trimethylsilyloxystearic acid, trimethylsilyl est 73 T’T r TT 17.40 17.60 17.80 18.00 5000 147 233 m/ z 147.00 12.92% 313 429 189 387 ........... 1.. | ........... 339 .. I. r. | n 11! I I I . | . > > | ni < |. I . > |.... |. TTTTT H.... | > I . 11 f. ! | ITH TTTTT m/z--> 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 Abundance #48337: 2H-1,4-Benzodiazepin-2-one, 7-chloro-1,3-dihydro-5- T 73 341 17.40 17.60 17.80 18.00 m/z 341.95 10.14% 5000 45 91 | 116 146 227 269 315 111»■ I • • ■ ■ I ................ ..... r "■ i TTTTTTTTTTTTT’TTTT’T i"1 ■ I" "T1 •1111 • • 'I m/z-> 40 60 80 100 120 140 160180 200 220 240 260 280 300 320 340 360 380 400 420 17.40 17.60 17.80 18.00

26535.D NP112701.M Thu Dec 13 11:25:12 2001 Page 8

NYC-WTC_000031829

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NYC-WTC_000031829Source: NYC Law Department, mirrored locally

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