GCMS blank analysis results for sample AE11410, May 22 2002

NYC 9/11 Public Portal Document quantitation Report (QL Reviewed;

Data File : C:\MSDCHEM\l\DATA\051702\0515LB.D Vial: 16 Acq On : 18 May 2002 1:49 am Operator: Mclean Sample : 5/15 eh Inst : Instrumen Mise : Multiplr: 1.00 MS Integration Params: EVENTS.E Quant Time: May 20 09:53:26 2002 Quant Results File: 050102.RES

Quant Method : C:\MSDCHEM\1\METHODS\050102.M (Chemstation Integrator) Title : 508 Modified GC/MS scan Last Update : Mon May 13 11:40:29 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 7280693 40.00 ug/L 0.00 10) Napthalene-d8 13.43 136 27870469 40.00 ug/L 0.00 17) Acenapthalene-dlO 18.57 164 14843758 40.00 ug/L 0.00 29) Phenanthranene-dlO 22.95 188 21213653 40.00 ug/L 0.00 37) Chrysene-dl2 30.81 240 14242812 40.00 ug/L 0.00 43) Perylene-dl2 34.70 264 7416685 40.00 ug/L 0.00

System Monitoring Compounds 27) TCMX 20.55 209 3235864 35.91 ug/L 0.00 Spiked Amount 40.000 Recovery 89.77%

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) 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 20.55 204 18263 N.D. 26) Fluorene 0.00 166 0 N.D. 28) Azobenzene 20.54 77 54283 N.D. 30) Nnitrosodiphenylamine 20.55 169 61876 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. 34) Anthracene 0.00 178 0 N.D. 35) Di-n-butylphthalate 0.00 149 0 N.D.

(#) = qualifier out of range (m) = manual integration 0515LB.D 050102.M Tue May 21 15:59:45 2002 Page 1

NYC-WTC_000025217