GCMS blank analysis results, sample AE12288, June 2002

NYC 9/11 Public Portal Document QudIIL J. LdtOI KCpOL L 1 KevLewec) ‘ Data’ File : C:\MSDCHEM\l\DATA\052902\LB.D Vial: 4 Acq On : 29 May 2002 12:32 pm Operator: McLean Sample : gc/ms scan 5/24 Inst : Instrumen Mise Multiplr: 1.00 MS Integration Params: EVENTS.E Quant Time: Jun 03 09:26:43 2002 Quant Results File: 052202.RES e* Quant Method : C:\MSDCHEM\1\METHODS\052202.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Last Update : Wed May 29 08:47:01 2002 Response via : Initial Calibration DataAcq Meth : 508SCAN

Internal Standards R.T. Qlon Response Cone Units Dev(Min) 1) 1,4-Dichlorobenzene-d4 9.90 152 3986628 40.00 ug/L 0.00 10) Napthalene-d8 13.39 136 15995383 40.00 ug/L -0.02 17) Acenapthalene-dlO 18.53 164 8718784 40.00 ug/L -0.01 29) Phenanthranene-dlO 22.91 188 13287400 40.00 ug/L -0.01 37) Chrysene-dl2 30.76 240 7351688 40.00 ug/L -0.05 43) Perylene-dl2 34.65 264 3158878 40.00 ug/L -0.03 System Monitoring Compounds 27) TCMX 20.50 209 1832461 36.47 ug/L -0.01 Spiked Amount 40.000 Recovery 91.17% Target Compounds Qvalue 2) n-nitros-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-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) 1sophorone 0.00 82 0 N.D. 13) bis(2-Chloroethoxy) methan 13.39 93 962 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-Chior©naphthalene 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 20.50 77 29587 N.D. 30) Nnitrosodiphenylamine 20.50 169 34433 0.26 ug/L # 64 31) 4-Bromophenyl-phenylether 0.00 248 0 N.D. 32) Hexachlorobenzene 0.00 284 0 N.D. 3 3) Phenanthrene 0.00 178 0 N.D. 34) Anthracene 0.00 178 0 N.D. 35) Di-n-butylphthalate 25.05 149 36259 N.D. (#) = qualifier out of range (m) = manual integration LB.D 052202.M Mon Jun 03 09:26:57 2002 Page 1

NYC-WTC_000014155