GCMS analysis comments for sample AD28677, Dec 2001

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Laboratory report noting low recovery rate and TurboVap contamination for sample AD28677.

NYC-WTC_000035171–000035194

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\28677.D Vial: 13 Acq On 5 Dec 2001 12:05 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 5 Octadecanoic acid, 2-methylpro Concentration Rank 2

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

31.57 4.90 ug/1 1068960 Chrysene-dl2 33.03

Hit# of 5 Tentative ID MW MolForm CAS# Qual 1 Octadecanoic acid, 2-methylpropyl e 340 C22H4402 000646-13-9 87 2 Butyl tetradecanoate (myristate) 284 C18H3602 000000-00-0 64 3 Octadecanoic acid, butyl ester 340 C22H4402 000123-95-5 45 4 Oxirane,2,3-bis(1-methylethyl)-, t 128 C8H160 054644-32-5 32 Abundance Scan 2890 (31.573 min): 28677.D (-) m/z 56.00 100.00% 53

5000 4 73 129 285 31.20 31.40 31.60 31.80 32.00

mlz?. — l4 11 143157171 165199213227241 fl....... , 340 40 60_ 80 100 120 140 160 180 200 220 240 260 280 300 320 340 m/z 57.00 52.85% Abundance #48214: Octadecanoic acid, 2-methylpropyl ester 57

5000 3t20 3140 31.60 31.80 32.00 285 267 m/z 43.05 4 5.34% 73 97 1 129 185 241 340 h ‘4T , 177 ‘TIIT‘‘‘ iu!। I। । —Hr ■ ■ r TTTTT 11' ‘' I i ■ ’ ■ ■ i ■ ■ ■ ■ i TTn m/z--> 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 Abundance ” #40'86: Bulyi tetradecanoate (myristate) 56

31.20 3140 31.60 31.80 32.00 5000 m/ z 41.05 38.08% 229 73 211 129 185 284 | 87 101 TIIuuuutur mmPPIPPPTTT miz-?____40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 Abundance #73570: Octadecanoic acid, butyl ester TImn—mn—m—-PPT 53 31.20 31.40 31.60 31.80 32.00 m/z 55.00 32.80% 5000 285 340 73 129 267

'' i" -7111—4 185 | 241 | ' ■ i ■ ■'' r ' ■ ■ i ■ ■ " r ' ■ ■ i ■ ■ ■ ■ i ■ ■ ■ ■ i1 ■1' i1 ■'' i ■' 7.. 4 M , r miz-> 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 31.20 31.40 31.60 31.80 32.00

28677.D GCMS1126.M Fri Dec 07 15:12:05 2001 Page 5

NYC-WTC_000035181

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NYC-WTC_000035181Source: NYC Law Department, mirrored locally

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NYC-WTC_000035052

Laboratory report noting low pH and TurboVap contamination with recovery data for sample AD28691.

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