GCMS blank analysis results for sample AD29931, Jan 2002

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Gas chromatography-mass spectrometry blank analysis showing results below method detection limits for various organic compounds.

NYC-WTC_000017042–000017049

Folder label: “GCMS X 12/14/01 A 1/1/02”

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NYC 9/11 Public Portal Document

Quantitation Report (QT Reviewed)

Data File C:\HPCHEM\1\DATA\DEC3101\LBC.D Vial: 15 Acq On 1 Jan 2002 12:35 am Operator: 209 GALOS Sample gems scan 12/14a Inst : GC/MS 209 Mise Multiplr: 1.00 MS Integration Params: GOOFY.P Quant Time: Jan 15 11:33 2002 Quant Results File: GCMS1126.RES

Quant Method : C:\HPCHEM\1\METHODS\GCMS1126.M (RTE Integrator) Title : 209 625/TCLP calibration table Last Update : Fri Dec 28 15:11:00 2001 Response via : Initial Calibration DataAcq Meth : GCMS1126

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

1) 1,4-Dichlorobenzene-d4 11.68 152 804806 20.00 ug/1 -0.02 10) Naphthalene-d8 15.28 136 3146555 20.00 ug/1 -0.03 17) Acenaphthene-diO 20.56 164 1634922 20.00 ug/1 -0.02 29) Phenanthrene-diO 24.98 188 2289357 20.00 ug/1 -0.01 38) Chrysene-dl2 33.02 240 1318465m 20.00 ug/1 -0.01 44) Perylene-dl2 37.12 264 757615 20.00 ug/1 0.00

System Monitoring Compounds 37) 2,4-DDD 30.07 235 102146 4.06 ug/mL 0.00 Spiked Amount 5.000 Recovery = 81.20%

Target Compounds Qvalue 2) N-nitroso-dimethyl amine 0.00 74 0 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-Chloropropan 0.00 45 0 N.D. 8) N-Nitroso-di-n-propylamine 0.00 70 0 N.D. 9) Hexachloroethane 0.00 117 0 N.D. 11) Nitrobenzene 0.00 77 0 N.D. 12) 1sophorone 0.00 82 0 N.D. 13) bis(2-Chloroethoxy)methane 0.00 93 0 N.D. 14) 1,2,4-Trichlorobenzene 0.00 180 0 N.D. 15) Naphthalene 15.33 128 883 N.D. 16) Hexachlorobutadiene 0.00 225 0 N.D. 18) Hexachlorocyclopentadiene 0.00 237 0 N.D. 19) 2-Chloronaphthalene 0.00 162 0 N.D. 20) Dimethylphthalate 0.00 163 0 N.D. 21) 2,6-Dinitrotoluene 0.00 165 0 N.D. 22) Acenaphthylene 0.00 152 0 N.D. 23) Ac enapht hene 0.00 153 0 N.D. 24) 2,4-Dinitrotoluene 21.15 165 379 N.D. 25) Diethylphthalate 0.00 149 0 N.D. 26) 4-Chlorophenyl-phenylether 0.00 204 0 N.D. 27) Fluorene 0.00 166 0 N.D. 28) Azobenzen/ 1,2-Diphenylhyd 0.00 77 0 N.D.

(#) = qualifier out of range (m) = manual integration LBC.D GCMS1126.M Tue Jan 15 11:33:36 2002 Page 1

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