GCMS comments for sample AD26536 detecting 1,1,2,2-Tetrachloroethane

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Analysis report dated December 16, 2001, identifying 1,1,2,2-Tetrachloroethane at 3.2 ug/L in sample AD26536.

NYC-WTC_000031831–000031846

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

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NYC 9/11 Public Portal Document

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Data File C:\HPCHEM\l\DATA\DEC0701\26536.D Vial: 11 Acq On 8 Dec 2001 3:14 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 4 2-Butanol, 3-methyl-, (S)- Concentration Rank 1

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

7.19 9.58 ng/uL 2273810 1,4-Dichlorobenzene-d4 11.88

Hit# Of 5 Tentative ID MW MolForm CAS# Qual

1 2-Butanol, 3 methyl-, (S) - 88 C5H120 001517-66-4 42 2 2,3-Butanediol 90 C4H10O2 000513-85-9 33 3 N-Ethylformamide 73 C3H7NO 000627-45-2 9 4 2-Butanol, 3-methyl- 88 C5H120 000598-75-4 9 Abundance Scan 256 (7.186 min): 26536.D (-) m/z 45.0,5 100.00% 45

5000 61 73 —1. p-F —0001 i 6.80 7.00 7.20 7.40 7.60 I 36 l4 T’T 1 88 207 1 ' " I 1 | i. , 11... ,,,, ri 11 > 111, i TT i < i 1111 1111 111" i1" m/z 43.05 66.57%

_L m/z-> 10 20 30 40 50 60 70 80 90 100110120130140150160170180190200210 Abundance #852: 2-Butanol, 3-methyl-, (S)- 45

5000 6.80 7.00 7.20 7.40 7.60 m/ Z 35.42% ll 73 I 55 87 I " • ‘ |• I " " I " " I " ■ • I " ’111" ' I" " I " ■ ■ I " • ■ I ■ ’ • ■ l " " I ■ ■ • ■! ■ • • ’ l 61 ’ 10 m/z-> 10 20 30 40 50 60 70 80 90 100110120130140150160170180190 200210 Abundance #917: 2,3-Butanediol 45

6.80 7.00 7.20 7.40 7.60 5000 - m/z 73.0,5 35.42% 29 19 57 TVTTTTi I ‘ ” 'I I‘75 "TCCT90‘TTEIT" 111" i i" " i" " r'" i"' m/z--> 10 20 30 40 50 60 70 80 90 100110120130140150160170180190 200210 Abundance #292: N-Ethylformamide < । 11 r 1 । 1 1 1 1 । 1 30 6.80 7.00 7.20 7.40 7.60 73 m/z 44.0.5 14.33% 5000 - 44 58

m/z-> uu T ।.,,. (.'l..,.... ।.... ।. 111111 u p 11111111111 ■ 11111 ■ 1111111111111111111111 ■ 111

10 20 30 40 50 60 70 80 90 100110120130140150160170180190 200210 6.80 7.00 7.20 7.40 7.60

26536.D NP112701.M Thu Dec 13 11:25:57 2001 Page 4

NYC-WTC_000031842

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NYC-WTC_000031842Source: NYC Law Department, mirrored locally

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GCMS comments for sample AD2653S detecting 1,1,2,2-Tetrachloroethane · Box DEP Box 21

NYC-WTC_000031814

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

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