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GCMS blank analysis results for volatile organics, May 2002

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Laboratory report showing blank sample analysis results for volatile organic compounds using gas chromatography-mass spectrometry on May 9, 2002.

NYC-WTC_000044858–000044872

Folder label: “GCMS X 4/30/02 A 5/8/02

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NYC 9/11 Public Portal Document Quantitation Report (QT Reviewed)

Data File C:\MSDCHEM\l\DATA\050802\430LB.D Vial: 12 Acq On 9 May 2002 12:22 am Operator: Mclean Sample 4/30 eh Inst Instrumen Mise Multiplr: 1.00 MS Integration Params: EVENTS.E Quant Time: May 09 13:29:12 2002 Quant Results File: 050102.RES

Quant Method : C:\MSDCHEM\l\METHQDS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Last Update : Tue May 07 09:57:23 2002 Response via : Initial Calibration DataAcq Meth : 508SCAN

Internal Standards R.T. Qlon Response Cone Units Dev(Min)

1) 1,4-Dichlorobenzene-d4 9.94 152 7594318 40.00 ug/L 0.00 10) Napthalene-d8 13.43 136 30084642 40.00 ug/L 0.00 17) Acenapthalene-dlO 18.57 164 16245310 40.00 ug/L 0.00 29) Phenanthranene-dlO 22.96 188 23853734 40.00 ug/L 0.00 37) Chrysene-dl2 30.81 240 18783606 40.00 ug/L 0.00 43) Perylene-dl2 34.71 264 12841088 40.00 ug/L 0.00

System Monitoring Compounds 2 7) TCMX 20.54 209 871912 7.18 ug/L 0.00 Spiked Amount 10.000 Recovery = 71.80% 50) 2,4-ddd 0.00 235 0 0.00 ug/L Spiked Amount 5.000 Recovery 0.00%

Target Compounds Qvalue 2) n-nitros-dimethyl amine 3.57 74 16753 N.D. 3) bis(2-Chloroethyl)ether 0.00 93 0 N.D. 4) 1,3-Dichlorobenzene 0.00 146 0 N.D. 5) 1,4-Dichlorobenzene 0.00 146 0 N.D. 6) 1,2-Dichlorobenzene 0.00 146 0 N.D. 7) 2,2'oxybis(1-Chloropropane 0.00 45 0 N.D. 8) N-nitroso-di-propylamine 0.00 70 0 N.D. 9) Hexachloroethane 0.00 117 0 N.D. 11) Nitrobenzene 0.00 77 0 N.D. 12) Isophorone 0.00 82 0 N.D. 13) bis(2-Chloroethoxy) methan 0.00 93 0 N.D. 14) 1,2,4-Trichlorobenzene 0.00 180 0 N.D. 15) Napthalene 0.00 128 0 N.D. 16) Hexachlorobutadiene 0.00 225 0 N.D. 18) 2-Chloronaphthalene 0.00 162 0 N.D. 19) Dimethylphthalate 0.00 163 0 N.D. 20) 2,6-Dinitrotoluene 0.00 165 0 N.D. 21) Acenapthylene 0.00 152 0 N.D. 22) Acenapthalene 0.00 153 0 N.D. 23) 2,4-Dinitrotoluene 0.00 165 0 N.D. 24) Diethylphthalate 0.00 149 • 0 N.D. 25) 4-Chlorophenyl-phenylether 0.00 204 0 N.D. 26) Fluorene 0.00 166 0 N.D. 28) Azobenzene 0.0 0 77 0 N.D. 30) Nnitrosodiphenylamine 20.53 169 14651 N.D. 31) 4-Bromophenyl-phenylether 0.00 248 0 N.D. 32) Hexachlorobenzene 0.00 284 0 N.D. 33) Phenanthrene 0.00 178 0 N.D.

(#) = qualifier out of range (m) = manual integration 430LB.D 050102.M Thu May 09 13:29:26 2002 Page 1

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NYC-WTC_000044859Source: NYC Law Department, mirrored locally

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